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@@ -1,18 +0,0 @@
|
||||
version: 1-{branch}+{build}
|
||||
|
||||
build_script:
|
||||
- cmd: C:\MinGW\msys\1.0\bin\make
|
||||
- cmd: rmdir /s /q .git
|
||||
before_test:
|
||||
- cmd: set PATH=%PATH%;C:\Program Files\erl8.3\erts-8.3\bin
|
||||
test_script:
|
||||
- cmd: C:\MinGW\msys\1.0\bin\make --keep-going test_windows
|
||||
|
||||
environment:
|
||||
ELIXIR_ASSERT_TIMEOUT: 2000
|
||||
|
||||
matrix:
|
||||
allow_failures:
|
||||
- platform: x86
|
||||
- platform: x64
|
||||
- platform: Any CPU
|
||||
@@ -1,17 +0,0 @@
|
||||
[
|
||||
inputs: [
|
||||
"lib/*/{lib,unicode,test}/**/*.{ex,exs}",
|
||||
"lib/*/mix.exs"
|
||||
],
|
||||
|
||||
locals_without_parens: [
|
||||
# Formatter tests
|
||||
assert_format: 2,
|
||||
assert_format: 3,
|
||||
assert_same: 1,
|
||||
assert_same: 2,
|
||||
|
||||
# Errors tests
|
||||
assert_eval_raise: 3
|
||||
]
|
||||
]
|
||||
@@ -1 +0,0 @@
|
||||
lib/elixir/test/elixir/fixtures/*.txt text eol=lf
|
||||
+9
-11
@@ -1,13 +1,11 @@
|
||||
.formatter.exs
|
||||
/_build/
|
||||
/cover/
|
||||
/deps/
|
||||
/doc/
|
||||
/lib/*/ebin/
|
||||
/lib/*/_build/
|
||||
/lib/*/tmp/
|
||||
/lib/elixir/src/*_parser.erl
|
||||
/lib/elixir/test/ebin/
|
||||
/man/elixir.1
|
||||
/man/iex.1
|
||||
/Docs-v*.zip
|
||||
/Precompiled-v*.zip
|
||||
/.eunit
|
||||
.elixir.plt
|
||||
/.fetch
|
||||
erl_crash.dump
|
||||
*.ez
|
||||
n8n_openai_adapter-*.tar
|
||||
/tmp/
|
||||
/result
|
||||
|
||||
-47
@@ -1,47 +0,0 @@
|
||||
language: bash
|
||||
sudo: false
|
||||
|
||||
env:
|
||||
global:
|
||||
- ELIXIR_ASSERT_TIMEOUT=2000
|
||||
matrix:
|
||||
- OTP_RELEASE=OTP-22.0 CHECK_REPRODUCIBLE=true CHECK_POSIX_COMPLIANT=true
|
||||
- OTP_RELEASE=OTP-21.3.8
|
||||
- OTP_RELEASE=OTP-21.2
|
||||
- OTP_RELEASE=OTP-21.1
|
||||
- OTP_RELEASE=OTP-21.0
|
||||
- OTP_RELEASE=OTP-20.3
|
||||
- OTP_RELEASE=OTP-20.2
|
||||
- OTP_RELEASE=OTP-20.1
|
||||
- OTP_RELEASE=OTP-20.0
|
||||
- OTP_RELEASE=maint
|
||||
- OTP_RELEASE=master
|
||||
|
||||
matrix:
|
||||
fast_finish: true
|
||||
allow_failures:
|
||||
- env: OTP_RELEASE=maint
|
||||
- env: OTP_RELEASE=master
|
||||
|
||||
install:
|
||||
- wget -O otp.tar.gz https://repo.hex.pm/builds/otp/ubuntu-14.04/${OTP_RELEASE}.tar.gz
|
||||
- mkdir -p otp
|
||||
- tar zxf otp.tar.gz -C otp --strip-components=1
|
||||
- otp/Install -minimal $(pwd)/otp
|
||||
- PATH=$(pwd)/otp/bin:$PATH
|
||||
|
||||
script:
|
||||
- rm -rf .git
|
||||
- ELIXIRC_OPTS="--warnings-as-errors" ERLC_OPTS="+warning_as_errors" make compile
|
||||
- make test
|
||||
- dialyzer -pa lib/elixir/ebin --build_plt --output_plt elixir.plt --apps lib/elixir/ebin/elixir.beam lib/elixir/ebin/Elixir.Kernel.beam
|
||||
|
||||
# Check for reproducible builds only in the latest OTP release
|
||||
- if [ -n "$CHECK_REPRODUCIBLE" ]; then make check_reproducible; fi
|
||||
|
||||
# Check for POSIX compliant shell scripts
|
||||
- if [ -n "$CHECK_POSIX_COMPLIANT" ]; then
|
||||
shellcheck -e SC2039,2086 bin/elixir && echo "bin/elixir is POSIX compliant";
|
||||
shellcheck bin/elixirc && echo "bin/elixirc is POSIX compliant";
|
||||
shellcheck bin/iex && echo "bin/iex is POSIX compliant";
|
||||
fi
|
||||
-295
@@ -1,295 +0,0 @@
|
||||
# Changelog for Elixir v1.9
|
||||
|
||||
## Releases
|
||||
|
||||
The main feature in Elixir v1.9 is the addition of releases. A release is a self-contained directory that consists of your application code, all of its dependencies, plus the whole Erlang Virtual Machine (VM) and runtime. Once a release is assembled, it can be packaged and deployed to a target as long as the target runs on the same operating system (OS) distribution and version as the machine running the `mix release` command.
|
||||
|
||||
You can start a new project and assemble a release for it in three easy steps:
|
||||
|
||||
$ mix new my_app
|
||||
$ cd my_app
|
||||
$ MIX_ENV=prod mix release
|
||||
|
||||
A release will be assembled in `_build/prod/rel/my_app`. Inside the release, there will be a `bin/my_app` file which is the entry point to your system. It supports multiple commands, such as:
|
||||
|
||||
* `bin/my_app start`, `bin/my_app start_iex`, `bin/my_app restart`, and `bin/my_app stop` - for general management of the release
|
||||
|
||||
* `bin/my_app rpc COMMAND` and `bin/my_app remote` - for running commands on the running system or to connect to the running system
|
||||
|
||||
* `bin/my_app eval COMMAND` - to start a fresh system that runs a single command and then shuts down
|
||||
|
||||
* `bin/my_app daemon` and `bin/my_app daemon_iex` - to start the system as a daemon on Unix-like systems
|
||||
|
||||
* `bin/my_app install` - to install the system as a service on Windows machines
|
||||
|
||||
### Why releases?
|
||||
|
||||
Releases allow developers to precompile and package all of their code and the runtime into a single unit. The benefits of releases are:
|
||||
|
||||
* Code preloading. The VM has two mechanisms for loading code: interactive and embedded. By default, it runs in the interactive mode which dynamically loads modules when they are used for the first time. The first time your application calls `Enum.map/2`, the VM will find the `Enum` module and load it. There’s a downside. When you start a new server in production, it may need to load many other modules, causing the first requests to have an unusual spike in response time. Releases run in embedded mode, which loads all available modules upfront, guaranteeing your system is ready to handle requests after booting.
|
||||
|
||||
* Configuration and customization. Releases give developers fine grained control over system configuration and the VM flags used to start the system.
|
||||
|
||||
* Self-contained. A release does not require the source code to be included in your production artifacts. All of the code is precompiled and packaged. Releases do not even require Erlang or Elixir in your servers, as they include the Erlang VM and its runtime by default. Furthermore, both Erlang and Elixir standard libraries are stripped to bring only the parts you are actually using.
|
||||
|
||||
* Multiple releases. You can assemble different releases with different configuration per application or even with different applications altogether.
|
||||
|
||||
### Hooks and Configuration
|
||||
|
||||
Releases also provide built-in hooks for configuring almost every need of the production system:
|
||||
|
||||
* `config/config.exs` (and `config/prod.exs`) - provides build-time application configuration, which is executed when the release is assembled
|
||||
|
||||
* `config/releases.exs` - provides runtime application configuration. It is executed every time the release boots and is further extensible via config providers
|
||||
|
||||
* `rel/vm.args.eex` - a template file that is copied into every release and provides static configuration of the Erlang Virtual Machine and other runtime flags
|
||||
|
||||
* `rel/env.sh.eex` and `rel/env.bat.eex` - template files that are copied into every release and executed on every command to set up environment variables, including ones specific to the VM, and the general environment
|
||||
|
||||
We have written extensive documentation on releases, so we recommend checking it out for more information.
|
||||
|
||||
## Configuration overhaul
|
||||
|
||||
A new `Config` module has been added to Elixir. The previous configuration API, `Mix.Config`, was part of the Mix build tool. But since releases provide runtime configuration and Mix is not included in releases, we ported the `Mix.Config` API to Elixir. In other words, `use Mix.Config` has been soft-deprecated in favor of `import Config`.
|
||||
|
||||
Another important change related to configuration is that `mix new` will no longer generate a `config/config.exs` file. [Relying on configuration is undesired for most libraries](https://hexdocs.pm/elixir/library-guidelines.html#avoid-application-configuration) and the generated config files pushed library authors in the wrong direction. Furthermore, `mix new --umbrella` will no longer generate a configuration for each child app, instead all configuration should be declared in the umbrella root. That's how it has always behaved, we are now making it explicit.
|
||||
|
||||
## Other enhancements
|
||||
|
||||
There are many other enhancements. The Elixir CLI got a handful of new options in order to best support releases. `Logger` now computes its sync/async/discard thresholds in a decentralized fashion, reducing contention. `EEx` templates support more complex expressions than before. Finally, there is a new `~U` sigil for working with UTC DateTimes as well as new functions in the `File`, `Registry`, and `System` modules.
|
||||
|
||||
## v1.9.4 (2019-11-05)
|
||||
|
||||
### 1. Bug fixes
|
||||
|
||||
#### Mix
|
||||
|
||||
* [mix local.hex] Remove invalid deprecation warning on `mix local.hex` command
|
||||
|
||||
## v1.9.3 (2019-11-05)
|
||||
|
||||
Note this release deprecates the use of URLs on `mix archive.install`, `mix escript.install`, and `mix local.rebar`. Support for passing URLs to said commands will be fully removed on Elixir v1.10, as they are unsafe. Thanks to Bram Verburg for the report and for providing a fix.
|
||||
|
||||
The alternative is straight-forward: you can simply download the artifact via the command line and then invoke the command with a file system path. For example, instead of:
|
||||
|
||||
$ mix archive.install https://example.org/installer.ez
|
||||
|
||||
You can execute on Unix (Linux, MacOS X):
|
||||
|
||||
$ wget https://example.org/installer.ez
|
||||
$ mix archive.install installer.ez
|
||||
|
||||
or
|
||||
|
||||
$ curl -o installer.ez https://example.org/installer.ez
|
||||
$ mix archive.install installer.ez
|
||||
|
||||
On Windows (Win7 or later):
|
||||
|
||||
> powershell -Command "Invoke-WebRequest https://example.org/installer.ez -OutFile installer.ez"
|
||||
> mix archive.install installer.ez
|
||||
|
||||
or
|
||||
|
||||
> powershell -Command "(New-Object Net.WebClient).DownloadFile('https://example.org/installer.ez', 'installer.ez')"
|
||||
> mix archive.install installer.ez
|
||||
|
||||
Note that, if you are a library author, consider providing installable escripts and archives through Hex, such as Phoenix:
|
||||
|
||||
$ mix archive.install hex phx_new
|
||||
|
||||
Installations through Hex are always safe and they come with version management and all other benefits from Hex too.
|
||||
|
||||
### 1. Enhancements
|
||||
|
||||
#### Mix
|
||||
|
||||
* [mix release] Add :tar option for releases to create a tarball
|
||||
|
||||
### 2. Bug fixes
|
||||
|
||||
#### Mix
|
||||
|
||||
* [mix release] Use `default_release` option when name is not given
|
||||
* [mix release] Make release's boot script contents deterministic
|
||||
|
||||
### 3. Deprecations
|
||||
|
||||
#### Mix
|
||||
|
||||
* [mix archive.install] Warn when installing from URI
|
||||
* [mix escript.install] Warn when installing from URI
|
||||
* [mix local.rebar] Warn when installing from URI
|
||||
|
||||
## v1.9.2 (2019-10-12)
|
||||
|
||||
### 1. Enhancements
|
||||
|
||||
#### Mix
|
||||
|
||||
* [mix release] Allow `{:from_app, app_name}` as a version for releases
|
||||
|
||||
### 2. Bug fixes
|
||||
|
||||
#### Elixir
|
||||
|
||||
* [Kernel] Ensure compilation works for a variable named `super`
|
||||
* [Kernel] Ensure capture operator of a local function expands correctly inside a macro
|
||||
* [Regex] Ensure dynamic recompilation of regexes considers options. This fixes an issue where parsing the protocol in `URI.parse/1` seemingly looked case sensitive when running Elixir precompiled on another machine
|
||||
|
||||
#### Mix
|
||||
|
||||
* [mix release] Use `Base.encode32` when generating cookie to avoid unsafe chars
|
||||
* [mix release] Fix `install` command on Windows
|
||||
* [mix release] Quote executable path on Windows to ensure it works on directories with spaces
|
||||
|
||||
## v1.9.1 (2019-07-18)
|
||||
|
||||
### 1. Enhancements
|
||||
|
||||
#### Mix
|
||||
|
||||
* [mix format] Print relative paths in `--check-formatted` output
|
||||
* [mix release] Support included applications
|
||||
|
||||
### 2. Bug fixes
|
||||
|
||||
#### Elixir
|
||||
|
||||
* [Code] Fix formatter wrongly removing nested parens in nested calls
|
||||
|
||||
#### Logger
|
||||
|
||||
* [Logger] Do not crash translator on poorly formatted supervisor names
|
||||
|
||||
#### Mix
|
||||
|
||||
* [mix compile] Raise readable error for mismatched sources during compilation
|
||||
* [mix release] Preserve UTF8 encoding in release config files
|
||||
|
||||
## v1.9.0 (2019-06-24)
|
||||
|
||||
### 1. Enhancements
|
||||
|
||||
#### EEx
|
||||
|
||||
* [EEx] Allow more complex mixed expressions when tokenizing
|
||||
|
||||
#### Elixir
|
||||
|
||||
* [Access] Allow `Access.at/1` to handle negative index
|
||||
* [CLI] Add support for `--boot`, `--boot-var`, `--erl-config`, `--pipe-to`, `--rpc-eval`, and `--vm-args` options
|
||||
* [Code] Add `static_atom_encoder` option to `Code.string_to_quoted/2`
|
||||
* [Code] Support `:force_do_end_blocks` on `Code.format_string!/2` and `Code.format_file!/2`
|
||||
* [Code] Do not raise on deadlocks on `Code.ensure_compiled/1`
|
||||
* [Config] Add `Config`, `Config.Reader`, and `Config.Provider` modules for working with configuration
|
||||
* [File] Add `File.rename!/2`
|
||||
* [Inspect] Add `:inspect_fun` and `:custom_options` to `Inspect.Opts`
|
||||
* [Kernel] Add `~U` sigil for UTC date times
|
||||
* [Kernel] Optimize `&super/arity` and `&super(&1)`
|
||||
* [Kernel] Optimize generated code for `with` with a catch-all clause
|
||||
* [Kernel] Validate `__struct__` key in map returned by `__struct__/0,1`
|
||||
* [Module] Add `Module.get_attribute/3`
|
||||
* [Protocol] Improve `Protocol.UndefinedError` messages to also include the type that was attempted to dispatch on
|
||||
* [Protocol] Optimize performance of dynamic dispatching for non-consolidated protocols
|
||||
* [Record] Include field names in generated type for records
|
||||
* [Regex] Automatically recompile regexes
|
||||
* [Registry] Add `Registry.select/2`
|
||||
* [System] Add `System.restart/0`, `System.pid/0` and `System.no_halt/1`
|
||||
* [System] Add `System.get_env/2`, `System.fetch_env/1`, and `System.fetch_env!/1`
|
||||
* [System] Support `SOURCE_DATE_EPOCH` for reproducible builds
|
||||
|
||||
#### ExUnit
|
||||
|
||||
* [ExUnit] Allow multiple `:exclude` on configuration/CLI
|
||||
* [ExUnit.DocTest] No longer wrap doctest errors in custom exceptions. They ended-up hiding more information than showing
|
||||
* [ExUnit.DocTest] Display the actual doctest code when doctest fails
|
||||
|
||||
#### IEx
|
||||
|
||||
* [IEx.CLI] Copy ticktime from remote node on IEx `--remsh`
|
||||
* [IEx.CLI] Automatically add a host on node given to `--remsh`
|
||||
|
||||
#### Logger
|
||||
|
||||
* [Logger] Use a decentralized mode computation for Logger which allows overloads to be detected more quickly
|
||||
* [Logger] Use `persistent_term` to store configuration whenever available for performance
|
||||
|
||||
#### Mix
|
||||
|
||||
* [Mix] Follow XDG base dir specification in Mix for temporary and configuration files
|
||||
* [Mix.Generator] Add `copy_file/3`, `copy_template/4`, and `overwite?/2`
|
||||
* [Mix.Project] Add `preferred_cli_target` that works like `preferred_cli_env`
|
||||
* [mix archive.uninstall] Allow `mix archive.uninstall APP` to uninstall any installed version of APP
|
||||
* [mix new] No longer generate a `config/` directory for mix new
|
||||
* [mix release] Add support for releases
|
||||
* [mix release.init] Add templates for release configuration
|
||||
* [mix test] Allow running tests for a given umbrella app from the umbrella root with `mix test apps/APP/test`. Test failures also include the `apps/APP` prefix in the test location
|
||||
|
||||
### 2. Bug fixes
|
||||
|
||||
#### EEx
|
||||
|
||||
* [EEx] Consistently trim newlines when you have a single EEx expression per line on multiple lines
|
||||
|
||||
#### Elixir
|
||||
|
||||
* [Code] Quote `::` in `Code.format_string!/1` to avoid ambiguity
|
||||
* [Code] Do not crash formatter on false positive sigils
|
||||
* [Enum] Ensure the first equal entry is returned by `Enum.min/2` and `Enum.max/2`
|
||||
* [Kernel] Improve error message when string interpolation is used in a guard
|
||||
* [Kernel] Properly merge and handle docs for callbacks with multiple clauses
|
||||
* [Kernel] Guarantee reproducible builds on modules with dozens of specs
|
||||
* [Kernel] Resolve `__MODULE__` accordingly in nested `defmodule` to avoid double nesting
|
||||
* [Kernel] Type variables starting with an underscore (`_foo`) should not raise compile error
|
||||
* [Kernel] Keep order of elements when macro `in/2` is expanded with a literal list on the right-hand side
|
||||
* [Kernel] Print proper location on undefined function error from dynamically generated functions
|
||||
* [Kernel] **Potentially breaking** Do not leak aliases when nesting module definitions that are fully namespaced modules. If you defined `defmodule Elixir.Foo.Bar` inside `defmodule Foo`, previous Elixir versions would automatically define an alias, but fully namespaced modules such as `Elixir.Foo.Bar` should never define or require an alias. If you were accidentally relying on this broken behaviour, your code may no longer work
|
||||
* [System] Make sure `:init.get_status/0` is set to `{:started, :started}` once the system starts
|
||||
* [Path] Do not expand `~` in `Path.expand/2` when not followed by a path separator
|
||||
* [Protocol] Ensure `debug_info` is kept in protocols
|
||||
* [Regex] Ensure inspect returns valid `~r//` expressions when they are manually compiled with backslashes
|
||||
* [Registry] Fix ETS leak in `Registry.register/2` for already registered calls in unique registries while the process is still alive
|
||||
|
||||
#### ExUnit
|
||||
|
||||
* [ExUnit] Raise error if attempting to run single line tests on multiple files
|
||||
* [ExUnit] Return proper error on duplicate child IDs on `start_supervised`
|
||||
|
||||
#### IEx
|
||||
|
||||
* [IEx] Automatically shut down IEx if we receive EOF
|
||||
|
||||
#### Logger
|
||||
|
||||
* [Logger] Don't discard Logger messages from other nodes as to leave a trail on both systems
|
||||
|
||||
#### Mix
|
||||
|
||||
* [mix compile] Ensure Erlang-based Mix compilers (erlang, leex, yecc) set valid position on diagnostics
|
||||
* [mix compile] Ensure compilation halts in an umbrella project if one of the siblings fail to compile
|
||||
* [mix deps] Raise an error if the umbrella app's dir name and `mix.exs` app name don't match
|
||||
* [mix deps.compile] Fix subcommand splitting bug in rebar3
|
||||
* [mix test] Do not consider modules that are no longer cover compiled when computing coverage report, which could lead to flawed reports
|
||||
|
||||
### 3. Soft-deprecations (no warnings emitted)
|
||||
|
||||
#### Mix
|
||||
|
||||
* [Mix.Config] `Mix.Config` has been deprecated in favor of the `Config` module that now ships as part of Elixir itself. Reading configuration files should now be done by the `Config.Reader` module
|
||||
|
||||
### 4. Hard-deprecations
|
||||
|
||||
#### Elixir
|
||||
|
||||
* [CLI] Deprecate `--detached` option, use `--erl "-detached"` instead
|
||||
* [Map] Deprecate Enumerable keys in `Map.drop/2`, `Map.split/2`, and `Map.take/2`
|
||||
* [String] The `:insert_replaced` option in `String.replace/4` has been deprecated. Instead you may pass a function as a replacement or use `:binary.replace/4` if you need to support earlier Elixir versions
|
||||
|
||||
#### Mix
|
||||
|
||||
* [Mix.Project] Deprecate `Mix.Project.load_paths/1` in favor of `Mix.Project.compile_path/1`
|
||||
|
||||
## v1.8
|
||||
|
||||
The CHANGELOG for v1.8 releases can be found [in the v1.8 branch](https://github.com/elixir-lang/elixir/blob/v1.8/CHANGELOG.md).
|
||||
@@ -1,60 +0,0 @@
|
||||
# Code of Conduct
|
||||
|
||||
Contact: elixir-lang-conduct@googlegroups.com
|
||||
|
||||
## Why have a Code of Conduct?
|
||||
|
||||
As contributors and maintainers of this project, we are committed to providing a friendly, safe and welcoming environment for all, regardless of age, disability, gender, nationality, race, religion, sexuality, or similar personal characteristic.
|
||||
|
||||
The goal of the Code of Conduct is to specify a baseline standard of behavior so that people with different social values and communication styles can talk about Elixir effectively, productively, and respectfully, even in face of disagreements. The Code of Conduct also provides a mechanism for resolving conflicts in the community when they arise.
|
||||
|
||||
## Our Values
|
||||
|
||||
These are the values Elixir developers should aspire to:
|
||||
|
||||
* Be friendly and welcoming
|
||||
* Be patient
|
||||
* Remember that people have varying communication styles and that not everyone is using their native language. (Meaning and tone can be lost in translation.)
|
||||
* Be thoughtful
|
||||
* Productive communication requires effort. Think about how your words will be interpreted.
|
||||
* Remember that sometimes it is best to refrain entirely from commenting.
|
||||
* Be respectful
|
||||
* In particular, respect differences of opinion. It is important that we resolve disagreements and differing views constructively.
|
||||
* Avoid destructive behavior
|
||||
* Derailing: stay on topic; if you want to talk about something else, start a new conversation.
|
||||
* Unconstructive criticism: don't merely decry the current state of affairs; offer (or at least solicit) suggestions as to how things may be improved.
|
||||
* Snarking (pithy, unproductive, sniping comments).
|
||||
|
||||
The following actions are explicitly forbidden:
|
||||
|
||||
* Insulting, demeaning, hateful, or threatening remarks.
|
||||
* Discrimination based on age, disability, gender, nationality, race, religion, sexuality, or similar personal characteristic.
|
||||
* Bullying or systematic harassment.
|
||||
* Unwelcome sexual advances.
|
||||
* Incitement to any of these.
|
||||
|
||||
## Where does the Code of Conduct apply?
|
||||
|
||||
If you participate in or contribute to the Elixir ecosystem in any way, you are encouraged to follow the Code of Conduct while doing so.
|
||||
|
||||
Explicit enforcement of the Code of Conduct applies to the official mediums operated by the Elixir project:
|
||||
|
||||
* The [official GitHub projects][1] and code reviews.
|
||||
* The official elixir-lang mailing lists.
|
||||
* The **[#elixir-lang][2]** IRC channel on [Freenode][3].
|
||||
|
||||
Other Elixir activities (such as conferences, meetups, and unofficial forums) are encouraged to adopt this Code of Conduct. Such groups must provide their own contact information.
|
||||
|
||||
Project maintainers may remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct.
|
||||
|
||||
Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by emailing: elixir-lang-conduct@googlegroups.com. All complaints will be reviewed and investigated and will result in a response that is deemed necessary and appropriate to the circumstances. **All reports will be kept confidential**.
|
||||
|
||||
**The goal of the Code of Conduct is to resolve conflicts in the most harmonious way possible**. We hope that in most cases issues may be resolved through polite discussion and mutual agreement. Bannings and other forceful measures are to be employed only as a last resort. **Do not** post about the issue publicly or try to rally sentiment against a particular individual or group.
|
||||
|
||||
## Acknowledgements
|
||||
|
||||
This document was based on the Code of Conduct from the Go project with parts derived from Django's Code of Conduct, Rust's Code of Conduct and the Contributor Covenant.
|
||||
|
||||
[1]: https://github.com/elixir-lang/
|
||||
[2]: https://webchat.freenode.net/?channels=#elixir-lang
|
||||
[3]: https://www.freenode.net
|
||||
@@ -1,20 +0,0 @@
|
||||
### Precheck
|
||||
|
||||
* Do not use the issue tracker for help or support (try Elixir Forum, Stack Overflow, IRC, etc.)
|
||||
* For proposing a new feature, please start a discussion on the Elixir Core mailing list: https://groups.google.com/group/elixir-lang-core
|
||||
* For bugs, do a quick search and make sure the bug has not yet been reported
|
||||
* Please disclose security vulnerabilities privately at elixir-security@googlegroups.com
|
||||
* Finally, be nice and have fun!
|
||||
|
||||
### Environment
|
||||
|
||||
* Elixir & Erlang/OTP versions (elixir --version):
|
||||
* Operating system:
|
||||
|
||||
### Current behavior
|
||||
|
||||
Include code samples, errors and stacktraces if appropriate.
|
||||
|
||||
### Expected behavior
|
||||
|
||||
A short description on how you expect the code to behave.
|
||||
@@ -1,176 +0,0 @@
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
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|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
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|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
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|
||||
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|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
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|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
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|
||||
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|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
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defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
@@ -1,321 +0,0 @@
|
||||
PREFIX ?= /usr/local
|
||||
SHARE_PREFIX ?= $(PREFIX)/share
|
||||
MAN_PREFIX ?= $(SHARE_PREFIX)/man
|
||||
CANONICAL := v1.9/ # master/ or vMAJOR.MINOR/
|
||||
ELIXIRC := bin/elixirc --verbose --ignore-module-conflict $(ELIXIRC_OPTS)
|
||||
ERLC := erlc -I lib/elixir/include $(ERLC_OPTS)
|
||||
ERL := erl -I lib/elixir/include -noshell -pa lib/elixir/ebin
|
||||
GENERATE_APP := $(CURDIR)/lib/elixir/generate_app.escript
|
||||
VERSION := $(strip $(shell cat VERSION))
|
||||
Q := @
|
||||
LIBDIR := lib
|
||||
BINDIR := bin
|
||||
INSTALL = install
|
||||
INSTALL_DIR = $(INSTALL) -m755 -d
|
||||
INSTALL_DATA = $(INSTALL) -m644
|
||||
INSTALL_PROGRAM = $(INSTALL) -m755
|
||||
GIT_REVISION = $(strip $(shell git rev-parse HEAD 2> /dev/null ))
|
||||
GIT_TAG = $(strip $(shell head="$(call GIT_REVISION)"; git tag --points-at $$head 2> /dev/null | tail -1) )
|
||||
SOURCE_DATE_EPOCH_PATH = lib/elixir/tmp/ebin_reproducible
|
||||
SOURCE_DATE_EPOCH_FILE = $(SOURCE_DATE_EPOCH_PATH)/SOURCE_DATE_EPOCH
|
||||
|
||||
.PHONY: install compile erlang elixir unicode app build_plt clean_plt dialyze test check_reproducible clean clean_residual_files install_man clean_man docs Docs.zip Precompiled.zip zips
|
||||
.NOTPARALLEL: compile
|
||||
|
||||
#==> Functions
|
||||
|
||||
define CHECK_ERLANG_RELEASE
|
||||
erl -noshell -eval '{V,_} = string:to_integer(erlang:system_info(otp_release)), io:fwrite("~s", [is_integer(V) and (V >= 20)])' -s erlang halt | grep -q '^true'; \
|
||||
if [ $$? != 0 ]; then \
|
||||
echo "At least Erlang/OTP 20.0 is required to build Elixir"; \
|
||||
exit 1; \
|
||||
fi
|
||||
endef
|
||||
|
||||
define APP_TEMPLATE
|
||||
$(1): lib/$(1)/ebin/Elixir.$(2).beam lib/$(1)/ebin/$(1).app
|
||||
|
||||
lib/$(1)/ebin/$(1).app: lib/$(1)/mix.exs
|
||||
$(Q) cd lib/$(1) && ../../bin/elixir -e 'Mix.start(:permanent, [])' -r mix.exs -e 'Mix.Task.run("compile.app", ~w[--compile-path ebin])'
|
||||
|
||||
lib/$(1)/ebin/Elixir.$(2).beam: $(wildcard lib/$(1)/lib/*.ex) $(wildcard lib/$(1)/lib/*/*.ex) $(wildcard lib/$(1)/lib/*/*/*.ex)
|
||||
@ echo "==> $(1) (compile)"
|
||||
@ rm -rf lib/$(1)/ebin
|
||||
$(Q) cd lib/$(1) && ../../$$(ELIXIRC) "lib/**/*.ex" -o ebin
|
||||
|
||||
test_$(1): compile $(1)
|
||||
@ echo "==> $(1) (ex_unit)"
|
||||
$(Q) cd lib/$(1) && ../../bin/elixir -r "test/test_helper.exs" -pr "test/**/*_test.exs";
|
||||
endef
|
||||
|
||||
define WRITE_SOURCE_DATE_EPOCH
|
||||
$(shell mkdir -p $(SOURCE_DATE_EPOCH_PATH) && bin/elixir -e \
|
||||
'IO.puts System.build_info()[:date] \
|
||||
|> DateTime.from_iso8601() \
|
||||
|> elem(1) \
|
||||
|> DateTime.to_unix()' > $(SOURCE_DATE_EPOCH_FILE))
|
||||
endef
|
||||
|
||||
define READ_SOURCE_DATE_EPOCH
|
||||
$(strip $(shell cat $(SOURCE_DATE_EPOCH_FILE)))
|
||||
endef
|
||||
|
||||
#==> Compilation tasks
|
||||
|
||||
APP := lib/elixir/ebin/elixir.app
|
||||
PARSER := lib/elixir/src/elixir_parser.erl
|
||||
KERNEL := lib/elixir/ebin/Elixir.Kernel.beam
|
||||
UNICODE := lib/elixir/ebin/Elixir.String.Unicode.beam
|
||||
|
||||
default: compile
|
||||
|
||||
compile: erlang $(APP) elixir
|
||||
|
||||
erlang: $(PARSER)
|
||||
$(Q) if [ ! -f $(APP) ]; then $(call CHECK_ERLANG_RELEASE); fi
|
||||
$(Q) cd lib/elixir && mkdir -p ebin && erl -make
|
||||
|
||||
$(PARSER): lib/elixir/src/elixir_parser.yrl
|
||||
$(Q) erlc -o $@ +'{verbose,true}' +'{report,true}' $<
|
||||
|
||||
# Since Mix depends on EEx and EEx depends on Mix,
|
||||
# we first compile EEx without the .app file,
|
||||
# then Mix and then compile EEx fully
|
||||
elixir: stdlib lib/eex/ebin/Elixir.EEx.beam mix ex_unit logger eex iex
|
||||
|
||||
stdlib: $(KERNEL) VERSION
|
||||
$(KERNEL): lib/elixir/lib/*.ex lib/elixir/lib/*/*.ex lib/elixir/lib/*/*/*.ex
|
||||
$(Q) if [ ! -f $(KERNEL) ]; then \
|
||||
echo "==> bootstrap (compile)"; \
|
||||
$(ERL) -s elixir_compiler bootstrap -s erlang halt; \
|
||||
fi
|
||||
@ echo "==> elixir (compile)";
|
||||
$(Q) cd lib/elixir && ../../$(ELIXIRC) "lib/kernel.ex" -o ebin;
|
||||
$(Q) cd lib/elixir && ../../$(ELIXIRC) "lib/**/*.ex" -o ebin;
|
||||
$(Q) $(MAKE) unicode
|
||||
$(Q) $(MAKE) app
|
||||
|
||||
app: $(APP)
|
||||
$(APP): lib/elixir/src/elixir.app.src lib/elixir/ebin VERSION $(GENERATE_APP)
|
||||
$(Q) $(GENERATE_APP) $< $@ $(VERSION)
|
||||
|
||||
unicode: $(UNICODE)
|
||||
$(UNICODE): lib/elixir/unicode/*
|
||||
@ echo "==> unicode (compile)";
|
||||
$(Q) $(ELIXIRC) lib/elixir/unicode/unicode.ex -o lib/elixir/ebin;
|
||||
$(Q) $(ELIXIRC) lib/elixir/unicode/properties.ex -o lib/elixir/ebin;
|
||||
$(Q) $(ELIXIRC) lib/elixir/unicode/tokenizer.ex -o lib/elixir/ebin;
|
||||
|
||||
$(eval $(call APP_TEMPLATE,ex_unit,ExUnit))
|
||||
$(eval $(call APP_TEMPLATE,logger,Logger))
|
||||
$(eval $(call APP_TEMPLATE,eex,EEx))
|
||||
$(eval $(call APP_TEMPLATE,mix,Mix))
|
||||
$(eval $(call APP_TEMPLATE,iex,IEx))
|
||||
|
||||
install: compile
|
||||
@ echo "==> elixir (install)"
|
||||
$(Q) for dir in lib/*; do \
|
||||
rm -rf $(DESTDIR)$(PREFIX)/$(LIBDIR)/elixir/$$dir/ebin; \
|
||||
$(INSTALL_DIR) "$(DESTDIR)$(PREFIX)/$(LIBDIR)/elixir/$$dir/ebin"; \
|
||||
$(INSTALL_DATA) $$dir/ebin/* "$(DESTDIR)$(PREFIX)/$(LIBDIR)/elixir/$$dir/ebin"; \
|
||||
done
|
||||
$(Q) $(INSTALL_DIR) "$(DESTDIR)$(PREFIX)/$(LIBDIR)/elixir/bin"
|
||||
$(Q) $(INSTALL_PROGRAM) $(filter-out %.ps1, $(filter-out %.bat, $(wildcard bin/*))) "$(DESTDIR)$(PREFIX)/$(LIBDIR)/elixir/bin"
|
||||
$(Q) $(INSTALL_DIR) "$(DESTDIR)$(PREFIX)/$(BINDIR)"
|
||||
$(Q) for file in "$(DESTDIR)$(PREFIX)"/$(LIBDIR)/elixir/bin/*; do \
|
||||
ln -sf "../$(LIBDIR)/elixir/bin/$${file##*/}" "$(DESTDIR)$(PREFIX)/$(BINDIR)/"; \
|
||||
done
|
||||
$(MAKE) install_man
|
||||
|
||||
check_reproducible: compile
|
||||
$(Q) echo "==> Checking for reproducible builds..."
|
||||
$(Q) rm -rf lib/*/tmp/ebin_reproducible/
|
||||
$(call WRITE_SOURCE_DATE_EPOCH)
|
||||
$(Q) mkdir -p lib/elixir/tmp/ebin_reproducible/ \
|
||||
lib/eex/tmp/ebin_reproducible/ \
|
||||
lib/iex/tmp/ebin_reproducible/ \
|
||||
lib/logger/tmp/ebin_reproducible/ \
|
||||
lib/mix/tmp/ebin_reproducible/
|
||||
$(Q) mv lib/elixir/ebin/* lib/elixir/tmp/ebin_reproducible/
|
||||
$(Q) mv lib/eex/ebin/* lib/eex/tmp/ebin_reproducible/
|
||||
$(Q) mv lib/iex/ebin/* lib/iex/tmp/ebin_reproducible/
|
||||
$(Q) mv lib/logger/ebin/* lib/logger/tmp/ebin_reproducible/
|
||||
$(Q) mv lib/mix/ebin/* lib/mix/tmp/ebin_reproducible/
|
||||
SOURCE_DATE_EPOCH=$(call READ_SOURCE_DATE_EPOCH) $(MAKE) compile
|
||||
$(Q) echo "Diffing..."
|
||||
$(Q) diff -r lib/elixir/ebin/ lib/elixir/tmp/ebin_reproducible/
|
||||
$(Q) diff -r lib/eex/ebin/ lib/eex/tmp/ebin_reproducible/
|
||||
$(Q) diff -r lib/iex/ebin/ lib/iex/tmp/ebin_reproducible/
|
||||
$(Q) diff -r lib/logger/ebin/ lib/logger/tmp/ebin_reproducible/
|
||||
$(Q) diff -r lib/mix/ebin/ lib/mix/tmp/ebin_reproducible/
|
||||
$(Q) echo "Builds are reproducible"
|
||||
|
||||
clean:
|
||||
rm -rf ebin
|
||||
rm -rf lib/*/ebin
|
||||
rm -rf $(PARSER)
|
||||
$(Q) $(MAKE) clean_residual_files
|
||||
|
||||
clean_elixir:
|
||||
$(Q) rm -f lib/*/ebin/Elixir.*.beam
|
||||
|
||||
clean_residual_files:
|
||||
rm -rf lib/*/_build/
|
||||
rm -rf lib/*/tmp/
|
||||
rm -rf lib/elixir/test/ebin/
|
||||
rm -rf lib/mix/test/fixtures/deps_on_git_repo/
|
||||
rm -rf lib/mix/test/fixtures/git_rebar/
|
||||
rm -rf lib/mix/test/fixtures/git_repo/
|
||||
rm -rf lib/mix/test/fixtures/git_sparse_repo/
|
||||
rm -f erl_crash.dump
|
||||
$(Q) $(MAKE) clean_man
|
||||
|
||||
#==> Documentation tasks
|
||||
|
||||
LOGO_PATH = $(shell test -f ../docs/logo.png && echo "--logo ../docs/logo.png")
|
||||
SOURCE_REF = $(shell tag="$(call GIT_TAG)" revision="$(call GIT_REVISION)"; echo "$${tag:-$$revision}\c")
|
||||
DOCS_FORMAT = html
|
||||
COMPILE_DOCS = bin/elixir ../ex_doc/bin/ex_doc "$(1)" "$(VERSION)" "lib/$(2)/ebin" -m "$(3)" -u "https://github.com/elixir-lang/elixir" --source-ref "$(call SOURCE_REF)" $(call LOGO_PATH) -o doc/$(2) -n https://hexdocs.pm/$(2)/$(CANONICAL) -p https://elixir-lang.org/docs.html -f "$(DOCS_FORMAT)" $(4)
|
||||
|
||||
docs: compile ../ex_doc/bin/ex_doc docs_elixir docs_eex docs_mix docs_iex docs_ex_unit docs_logger
|
||||
|
||||
docs_elixir: compile ../ex_doc/bin/ex_doc
|
||||
@ echo "==> ex_doc (elixir)"
|
||||
$(Q) rm -rf doc/elixir
|
||||
$(call COMPILE_DOCS,Elixir,elixir,Kernel,-c lib/elixir/docs.exs)
|
||||
|
||||
docs_eex: compile ../ex_doc/bin/ex_doc
|
||||
@ echo "==> ex_doc (eex)"
|
||||
$(Q) rm -rf doc/eex
|
||||
$(call COMPILE_DOCS,EEx,eex,EEx)
|
||||
|
||||
docs_mix: compile ../ex_doc/bin/ex_doc
|
||||
@ echo "==> ex_doc (mix)"
|
||||
$(Q) rm -rf doc/mix
|
||||
$(call COMPILE_DOCS,Mix,mix,Mix)
|
||||
|
||||
docs_iex: compile ../ex_doc/bin/ex_doc
|
||||
@ echo "==> ex_doc (iex)"
|
||||
$(Q) rm -rf doc/iex
|
||||
$(call COMPILE_DOCS,IEx,iex,IEx)
|
||||
|
||||
docs_ex_unit: compile ../ex_doc/bin/ex_doc
|
||||
@ echo "==> ex_doc (ex_unit)"
|
||||
$(Q) rm -rf doc/ex_unit
|
||||
$(call COMPILE_DOCS,ExUnit,ex_unit,ExUnit)
|
||||
|
||||
docs_logger: compile ../ex_doc/bin/ex_doc
|
||||
@ echo "==> ex_doc (logger)"
|
||||
$(Q) rm -rf doc/logger
|
||||
$(call COMPILE_DOCS,Logger,logger,Logger)
|
||||
|
||||
../ex_doc/bin/ex_doc:
|
||||
@ echo "ex_doc is not found in ../ex_doc as expected. See README for more information."
|
||||
@ false
|
||||
|
||||
#==> Zip tasks
|
||||
|
||||
Docs.zip: docs
|
||||
rm -f Docs-v$(VERSION).zip
|
||||
zip -9 -r Docs-v$(VERSION).zip CHANGELOG.md doc NOTICE LICENSE README.md
|
||||
@ echo "Docs file created $(CURDIR)/Docs-v$(VERSION).zip"
|
||||
|
||||
Precompiled.zip: build_man compile
|
||||
rm -f Precompiled-v$(VERSION).zip
|
||||
zip -9 -r Precompiled-v$(VERSION).zip bin CHANGELOG.md lib/*/ebin lib/*/lib LICENSE man NOTICE README.md VERSION
|
||||
@ echo "Precompiled file created $(CURDIR)/Precompiled-v$(VERSION).zip"
|
||||
|
||||
zips: Precompiled.zip Docs.zip
|
||||
@ echo ""
|
||||
@ echo "### Checksums"
|
||||
@ echo ""
|
||||
@ shasum -a 1 < Precompiled-v$(VERSION).zip | sed -e "s/-//" | xargs echo " * Precompiled.zip SHA1:"
|
||||
@ shasum -a 512 < Precompiled-v$(VERSION).zip | sed -e "s/-//" | xargs echo " * Precompiled.zip SHA512:"
|
||||
@ shasum -a 1 < Docs-v$(VERSION).zip | sed -e "s/-//" | xargs echo " * Docs.zip SHA1:"
|
||||
@ shasum -a 512 < Docs-v$(VERSION).zip | sed -e "s/-//" | xargs echo " * Docs.zip SHA512:"
|
||||
@ echo ""
|
||||
|
||||
#==> Test tasks
|
||||
|
||||
test: test_formatted test_erlang test_elixir
|
||||
|
||||
test_windows: test test_taskkill
|
||||
|
||||
test_taskkill:
|
||||
taskkill //IM erl.exe //F //T //FI "MEMUSAGE gt 0"
|
||||
taskkill //IM epmd.exe //F //T //FI "MEMUSAGE gt 0"
|
||||
|
||||
TEST_ERL = lib/elixir/test/erlang
|
||||
TEST_EBIN = lib/elixir/test/ebin
|
||||
TEST_ERLS = $(addprefix $(TEST_EBIN)/, $(addsuffix .beam, $(basename $(notdir $(wildcard $(TEST_ERL)/*.erl)))))
|
||||
|
||||
test_formatted: compile
|
||||
bin/elixir bin/mix format --check-formatted
|
||||
|
||||
test_erlang: compile $(TEST_ERLS)
|
||||
@ echo "==> elixir (eunit)"
|
||||
$(Q) $(ERL) -pa $(TEST_EBIN) -s test_helper test;
|
||||
@ echo ""
|
||||
|
||||
$(TEST_EBIN)/%.beam: $(TEST_ERL)/%.erl
|
||||
$(Q) mkdir -p $(TEST_EBIN)
|
||||
$(Q) $(ERLC) -o $(TEST_EBIN) $<
|
||||
|
||||
test_elixir: test_stdlib test_ex_unit test_logger test_mix test_eex test_iex
|
||||
|
||||
test_stdlib: compile
|
||||
@ echo "==> elixir (ex_unit)"
|
||||
$(Q) exec epmd & exit
|
||||
$(Q) if [ "$(OS)" = "Windows_NT" ]; then \
|
||||
cd lib/elixir && cmd //C call ../../bin/elixir.bat -r "test/elixir/test_helper.exs" -pr "test/elixir/**/*_test.exs"; \
|
||||
else \
|
||||
cd lib/elixir && ../../bin/elixir -r "test/elixir/test_helper.exs" -pr "test/elixir/**/*_test.exs"; \
|
||||
fi
|
||||
|
||||
#==> Dialyzer tasks
|
||||
|
||||
DIALYZER_OPTS = --no_check_plt --fullpath -Werror_handling -Wunmatched_returns -Wunderspecs
|
||||
PLT = .elixir.plt
|
||||
|
||||
$(PLT):
|
||||
@ echo "==> Building PLT with Elixir's dependencies..."
|
||||
$(Q) dialyzer --output_plt $(PLT) --build_plt --apps erts kernel stdlib compiler syntax_tools parsetools tools ssl inets
|
||||
|
||||
clean_plt:
|
||||
$(Q) rm -f $(PLT)
|
||||
|
||||
build_plt: clean_plt $(PLT)
|
||||
|
||||
dialyze: compile $(PLT)
|
||||
@ echo "==> Dialyzing Elixir..."
|
||||
$(Q) dialyzer -pa lib/elixir/ebin --plt $(PLT) $(DIALYZER_OPTS) lib/*/ebin
|
||||
|
||||
#==> Man page tasks
|
||||
|
||||
build_man: man/iex.1 man/elixir.1
|
||||
|
||||
man/iex.1:
|
||||
$(Q) cp man/iex.1.in man/iex.1
|
||||
$(Q) sed -i.bak "/{COMMON}/r man/common" man/iex.1
|
||||
$(Q) sed -i.bak "/{COMMON}/d" man/iex.1
|
||||
$(Q) rm -f man/iex.1.bak
|
||||
|
||||
man/elixir.1:
|
||||
$(Q) cp man/elixir.1.in man/elixir.1
|
||||
$(Q) sed -i.bak "/{COMMON}/r man/common" man/elixir.1
|
||||
$(Q) sed -i.bak "/{COMMON}/d" man/elixir.1
|
||||
$(Q) rm -f man/elixir.1.bak
|
||||
|
||||
clean_man:
|
||||
rm -f man/elixir.1
|
||||
rm -f man/elixir.1.bak
|
||||
rm -f man/iex.1
|
||||
rm -f man/iex.1.bak
|
||||
|
||||
install_man: build_man
|
||||
$(Q) mkdir -p $(DESTDIR)$(MAN_PREFIX)/man1
|
||||
$(Q) $(INSTALL_DATA) man/elixir.1 $(DESTDIR)$(MAN_PREFIX)/man1
|
||||
$(Q) $(INSTALL_DATA) man/elixirc.1 $(DESTDIR)$(MAN_PREFIX)/man1
|
||||
$(Q) $(INSTALL_DATA) man/iex.1 $(DESTDIR)$(MAN_PREFIX)/man1
|
||||
$(Q) $(INSTALL_DATA) man/mix.1 $(DESTDIR)$(MAN_PREFIX)/man1
|
||||
$(MAKE) clean_man
|
||||
@@ -1,36 +0,0 @@
|
||||
LEGAL NOTICE INFORMATION
|
||||
------------------------
|
||||
|
||||
All the files in this distribution are copyright to the terms below.
|
||||
|
||||
== lib/elixir/src/elixir_parser.erl (generated by build scripts)
|
||||
|
||||
Copyright Ericsson AB 1996-2015
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
https://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
||||
== All other files
|
||||
|
||||
Copyright 2012 Plataformatec
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
https://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
@@ -1,214 +1,94 @@
|
||||
|
||||
=========
|
||||
[](https://travis-ci.org/elixir-lang/elixir)
|
||||
[](https://ci.appveyor.com/project/josevalim/elixir)
|
||||
# n8n-openai-adapter
|
||||
|
||||
Elixir is a dynamic, functional language designed for building scalable
|
||||
and maintainable applications.
|
||||
An OpenAI-compatible HTTP adapter that exposes self-hosted **n8n chat agents**
|
||||
behind a standard `/v1/chat/completions` API, so any OpenAI client (Cursor,
|
||||
LibreChat, the `openai` SDK, a custom app) can talk to your n8n agents as if
|
||||
they were OpenAI models.
|
||||
|
||||
For more about Elixir, installation and documentation,
|
||||
[check Elixir's website](https://elixir-lang.org/).
|
||||
n8n itself does **not** ship an inbound OpenAI-compatible endpoint (its "AI
|
||||
Gateway" is an outbound proxy to n8n Cloud). This small Elixir service is the
|
||||
bridge: one `/v1/chat/completions` endpoint, routed to whichever n8n agent you
|
||||
name in the `model` field.
|
||||
|
||||
## Policies
|
||||
## How it works
|
||||
|
||||
New releases are announced in the [announcement mailing list][8].
|
||||
You can subscribe by sending an email to elixir-lang-ann+subscribe@googlegroups.com and replying to the confirmation email.
|
||||
|
||||
All security releases [will be tagged with `[security]`][10]. For more information, please read our [Security Policy][9].
|
||||
|
||||
All interactions in our official communication channels follow our [Code of Conduct][1].
|
||||
|
||||
## Bug reports
|
||||
|
||||
For reporting bugs, [visit our issue tracker][2] and follow the steps
|
||||
for reporting a new issue. **Please disclose security vulnerabilities
|
||||
privately at elixir-security@googlegroups.com**.
|
||||
|
||||
## Compiling from source
|
||||
|
||||
For the many different ways to install Elixir,
|
||||
[see our installation instructions on the website](https://elixir-lang.org/install.html).
|
||||
To compile from source, you can follow the steps below.
|
||||
|
||||
First, [install Erlang](https://elixir-lang.org/install.html#installing-erlang). Then clone this repository to your machine, compile and test it:
|
||||
|
||||
```sh
|
||||
git clone https://github.com/elixir-lang/elixir.git
|
||||
cd elixir
|
||||
make clean test
|
||||
```
|
||||
Your OpenAI client
|
||||
POST /v1/chat/completions {"model":"scholar-agent","thread_id":"abc","messages":[...]}
|
||||
|
|
||||
v
|
||||
n8n-openai-adapter (Plug + Bandit)
|
||||
- authorize (Bearer <ADAPTER_API_KEY>)
|
||||
- look up "scholar-agent" -> n8n chat webhook URL (AgentRegistry GenServer)
|
||||
- take the last user message
|
||||
- forward to the n8n webhook {sessionId: thread_id, action: sendMessage, chatInput}
|
||||
|
|
||||
v
|
||||
n8n agent (its MCP tools, memory, etc. run as usual)
|
||||
|
|
||||
v
|
||||
returns OpenAI-shaped {"choices":[{"message":{"role":"assistant","content":...}}]}
|
||||
```
|
||||
|
||||
> Note: if you are running on Windows,
|
||||
[this article includes important notes for compiling Elixir from source
|
||||
on Windows](https://github.com/elixir-lang/elixir/wiki/Windows).
|
||||
Multiple agents = multiple `model` names, each mapped to a different n8n webhook
|
||||
in the `AGENTS` env var.
|
||||
|
||||
If Elixir fails to build (specifically when pulling in a new version via
|
||||
`git`), be sure to remove any previous build artifacts by running
|
||||
`make clean`, then `make test`.
|
||||
## Configuration (env vars)
|
||||
|
||||
If tests pass, you can use Interactive Elixir by running `bin/iex` in your terminal.
|
||||
| Var | Required | Purpose |
|
||||
|------------------|----------|---------------------------------------------------------------------|
|
||||
| `ADAPTER_API_KEY`| yes | Bearer key that OpenAI clients send. |
|
||||
| `ADMIN_API_KEY` | yes | Bearer key for the admin API / web admin page. |
|
||||
| `AGENTS_FILE` | no | Path to the JSON store (default `/var/lib/n8n-openai/agents.json`). |
|
||||
| `PORT` | no | HTTP port (default `8000`). |
|
||||
| `CHAT_WEBHOOK_BASIC` | no | `"user:password"` if your n8n Chat Trigger is Basic-auth protected. |
|
||||
|
||||
However, if tests fail, it is likely that you have an outdated Erlang/OTP version
|
||||
(Elixir requires Erlang/OTP 20.0 or later). You can check your Erlang/OTP version
|
||||
by calling `erl` in the command line. You will see some information as follows:
|
||||
Agents are **not** configured via env — they're managed at runtime through the
|
||||
web admin page / admin API and persisted to `AGENTS_FILE`. The store starts
|
||||
empty; add agents after boot.
|
||||
|
||||
Erlang/OTP 20 [erts-9.0] [smp:2:2] [async-threads:10] [kernel-poll:false]
|
||||
## Admin API (manage agents at runtime)
|
||||
|
||||
If you have properly set up your dependencies and tests still fail,
|
||||
you may want to open up a bug report, as explained next.
|
||||
Agents are persisted to `AGENTS_FILE` and can be added/removed without a
|
||||
redeploy, using the `ADMIN_API_KEY`:
|
||||
|
||||
## Proposing new features
|
||||
```bash
|
||||
# list
|
||||
curl -H "Authorization: Bearer $ADMIN_API_KEY" https://openai.bueso.eu/admin/agents
|
||||
|
||||
For proposing new features, please start a discussion in the
|
||||
[Elixir Core mailing list][3]. Keep in mind that it is your responsibility
|
||||
to argue and explain why a feature is useful and how it will impact the
|
||||
codebase and the community.
|
||||
# add / update an agent
|
||||
curl -X POST -H "Authorization: Bearer $ADMIN_API_KEY" -H "Content-Type: application/json" \
|
||||
-d '{"model":"media-agent","webhook":"https://n8n.bueso.eu/webhook/<id>/chat"}' \
|
||||
https://openai.bueso.eu/admin/agents
|
||||
|
||||
Once a proposal is accepted, it will be added to [the issue tracker][2].
|
||||
The issue tracker focuses on *actionable items* and it holds a list of
|
||||
upcoming enhancements and pending bugs. All entries in the tracker are
|
||||
tagged for clarity and to ease collaboration.
|
||||
|
||||
Features and bug fixes that have already been merged and will be included
|
||||
in the next release are marked as "closed" in the issue tracker and are
|
||||
added to the [changelog][7].
|
||||
|
||||
## Contributing
|
||||
|
||||
We welcome everyone to contribute to Elixir. To do so, there are a few
|
||||
things you need to know about the code. First, Elixir code is divided
|
||||
in applications inside the `lib` folder:
|
||||
|
||||
* `elixir` - Elixir's kernel and standard library
|
||||
|
||||
* `eex` - EEx is the template engine that allows you to embed Elixir
|
||||
|
||||
* `ex_unit` - ExUnit is a simple test framework that ships with Elixir
|
||||
|
||||
* `iex` - IEx stands for Interactive Elixir: Elixir's interactive shell
|
||||
|
||||
* `logger` - Logger is the built-in logger
|
||||
|
||||
* `mix` - Mix is Elixir's build tool
|
||||
|
||||
You can run all tests in the root directory with `make test` and you can
|
||||
also run tests for a specific framework `make test_#{APPLICATION}`, for example,
|
||||
`make test_ex_unit`. If you just changed something in the Elixir's standard
|
||||
library, you can run only that portion through `make test_stdlib`.
|
||||
|
||||
If you are changing just one file, you can choose to compile and run tests only
|
||||
for that particular file for fast development cycles. For example, if you
|
||||
are changing the String module, you can compile it and run its tests as:
|
||||
|
||||
```sh
|
||||
bin/elixirc lib/elixir/lib/string.ex -o lib/elixir/ebin
|
||||
bin/elixir lib/elixir/test/elixir/string_test.exs
|
||||
# remove
|
||||
curl -X DELETE -H "Authorization: Bearer $ADMIN_API_KEY" \
|
||||
https://openai.bueso.eu/admin/agents/media-agent
|
||||
```
|
||||
|
||||
To recompile (including Erlang modules):
|
||||
The store is authoritative and persists across restarts; no env config needed.
|
||||
|
||||
```sh
|
||||
make compile
|
||||
## Building & running
|
||||
|
||||
```bash
|
||||
mix deps.get
|
||||
mix compile
|
||||
ADAPTER_API_KEY=secret AGENTS='{"scholar-agent":"https://n8n.bueso.eu/webhook/<id>/chat"}' \
|
||||
PORT=8000 mix run --no-halt
|
||||
```
|
||||
|
||||
After your changes are done, please remember to run `mix format` to guarantee
|
||||
all files are properly formatted and then run the full suite with
|
||||
`make test`.
|
||||
## Testing
|
||||
|
||||
If your contribution fails during the bootstrapping of the language,
|
||||
you can rebuild the language from scratch with:
|
||||
|
||||
```sh
|
||||
make clean_elixir compile
|
||||
```bash
|
||||
MIX_ENV=test mix test
|
||||
```
|
||||
|
||||
Similarly, if you can't get Elixir to compile or the tests to pass after
|
||||
updating an existing checkout, run `make clean compile`. You can check
|
||||
[the official build status on Travis-CI](https://travis-ci.org/elixir-lang/elixir).
|
||||
More tasks can be found by reading the [Makefile](Makefile).
|
||||
## Nix
|
||||
|
||||
With tests running and passing, you are ready to contribute to Elixir and
|
||||
[send a pull request](https://help.github.com/articles/using-pull-requests/).
|
||||
We have saved some excellent pull requests we have received in the past in
|
||||
case you are looking for some examples:
|
||||
The repo ships a `flake.nix` exporting `overlays.default` and a `packages.default`
|
||||
(the packaged BEAM release), so it can be consumed as a flake input from your
|
||||
NixOS config just like any other flake — e.g.:
|
||||
|
||||
* [Implement Enum.member? - Pull Request](https://github.com/elixir-lang/elixir/pull/992)
|
||||
* [Add String.valid? - Pull Request](https://github.com/elixir-lang/elixir/pull/1058)
|
||||
* [Implement capture_io for ExUnit - Pull Request](https://github.com/elixir-lang/elixir/pull/1059)
|
||||
|
||||
### Reviewing changes
|
||||
|
||||
Once a pull request is sent, the Elixir team will review your changes.
|
||||
We outline our process below to clarify the roles of everyone involved.
|
||||
|
||||
All pull requests must be approved by two committers before being merged into
|
||||
the repository. If any changes are necessary, the team will leave appropriate
|
||||
comments requesting changes to the code. Unfortunately we cannot guarantee a
|
||||
pull request will be merged, even when modifications are requested, as the Elixir
|
||||
team will re-evaluate the contribution as it changes.
|
||||
|
||||
Committers may also push style changes directly to your branch. If you would
|
||||
rather manage all changes yourself, you can disable "Allow edits from maintainers"
|
||||
feature when submitting your pull request.
|
||||
|
||||
The Elixir team may optionally assign someone to review a pull request.
|
||||
If someone is assigned, they must explicitly approve the code before
|
||||
another team member can merge it.
|
||||
|
||||
When the review finishes, your pull request will be squashed and merged
|
||||
into the repository. If you have carefully organized your commits and
|
||||
believe they should be merged without squashing, please mention it in
|
||||
a comment.
|
||||
|
||||
## Building documentation
|
||||
|
||||
Building the documentation requires [ExDoc](https://github.com/elixir-lang/ex_doc)
|
||||
to be installed and built alongside Elixir:
|
||||
|
||||
```sh
|
||||
# After cloning and compiling Elixir, in its parent directory:
|
||||
git clone git://github.com/elixir-lang/ex_doc.git
|
||||
cd ex_doc && ../elixir/bin/mix do deps.get, compile
|
||||
```nix
|
||||
inputs.n8n-openai-adapter.url = "git+https://gitea.bueso.eu/<owner>/n8n-openai-adapter";
|
||||
```
|
||||
|
||||
Now go back to Elixir's root directory and run:
|
||||
|
||||
```sh
|
||||
make docs # to generate HTML pages
|
||||
make docs DOCS_FORMAT=epub # to generate EPUB documents
|
||||
```
|
||||
|
||||
This will produce documentation sets for `elixir`, `mix`, etc. under
|
||||
the `doc` directory. If you are planning to contribute documentation,
|
||||
[please check our best practices for writing documentation](https://hexdocs.pm/elixir/writing-documentation.html).
|
||||
|
||||
## Development links
|
||||
|
||||
* [Elixir Documentation][6]
|
||||
* [Elixir Core Mailing list (development)][3]
|
||||
* [Announcement mailing list][8]
|
||||
* [Code of Conduct][1]
|
||||
* [Issue tracker][2]
|
||||
* [Changelog][7]
|
||||
* [Security Policy][9]
|
||||
* **[#elixir-lang][4]** on [Freenode][5] IRC
|
||||
|
||||
[1]: CODE_OF_CONDUCT.md
|
||||
[2]: https://github.com/elixir-lang/elixir/issues
|
||||
[3]: https://groups.google.com/group/elixir-lang-core
|
||||
[4]: https://webchat.freenode.net/?channels=#elixir-lang
|
||||
[5]: https://www.freenode.net
|
||||
[6]: https://elixir-lang.org/docs.html
|
||||
[7]: CHANGELOG.md
|
||||
[8]: https://groups.google.com/group/elixir-lang-ann
|
||||
[9]: SECURITY.md
|
||||
[10]: https://groups.google.com/forum/#!searchin/elixir-lang-ann/%5Bsecurity%5D%7Csort:date
|
||||
|
||||
## License
|
||||
|
||||
"Elixir" and the Elixir logo are copyright (c) 2012 Plataformatec.
|
||||
|
||||
Elixir source code is released under Apache License 2.0.
|
||||
|
||||
Check [NOTICE](NOTICE) and [LICENSE](LICENSE) files for more information.
|
||||
|
||||
-45
@@ -1,45 +0,0 @@
|
||||
# Release process
|
||||
|
||||
## Shipping a new version
|
||||
|
||||
1. Ensure you are running on the oldest supported Erlang version
|
||||
|
||||
2. Update version in /VERSION
|
||||
|
||||
3. Ensure /CHANGELOG.md is updated, versioned and add the current date
|
||||
|
||||
4. Update "Compatibility and Deprecations" if a new OTP version is supported
|
||||
|
||||
5. Commit changes above with title "Release vVERSION" and generate a new tag
|
||||
|
||||
6. Run `make clean test` to ensure all tests pass from scratch and the CI is green
|
||||
|
||||
7. Recompile an existing project (for example, Ecto) to ensure manifests can be upgraded
|
||||
|
||||
8. Push branch and the new tag
|
||||
|
||||
9. Publish new zips with `make zips`, upload `Precompiled.zip` and `Docs.zip` to GitHub Releases, and include SHAs+CHANGELOG
|
||||
|
||||
10. Add the release to `elixir.csv` (all releases) and `_data/elixir-versions.yml` (except for RCs) files in `elixir-lang/elixir-lang.github.com`
|
||||
|
||||
11. Send an e-mail to elixir-lang-ann@googlegroups.com with title "Elixir vVERSION released". The body should be a link to the Release page on GitHub and the checksums. If it is a security release, prefix the title with the `[security]` tag
|
||||
|
||||
## Creating a new vMAJOR.MINOR branch
|
||||
|
||||
### In the new branch
|
||||
|
||||
1. Set `CANONICAL=` in /Makefile
|
||||
|
||||
2. Update tables in /SECURITY.md and "Compatibility and Deprecations"
|
||||
|
||||
3. Commit "Prepare vMAJOR.MINOR for release"
|
||||
|
||||
### Back in master
|
||||
|
||||
1. Bump /VERSION file
|
||||
|
||||
2. Start new /CHANGELOG.md
|
||||
|
||||
3. Update tables in "Compatibility and Deprecations"
|
||||
|
||||
4. Commit "Start vMAJOR.MINOR+1"
|
||||
-23
@@ -1,23 +0,0 @@
|
||||
# Security Policy
|
||||
|
||||
## Supported versions
|
||||
|
||||
Elixir applies bug fixes only to the latest minor branch. Security patches are available for the last 5 minor branches:
|
||||
|
||||
| Elixir version | Support
|
||||
| -------------- | ------------------------------
|
||||
| 1.9 | Bug fixes and security patches
|
||||
| 1.8 | Security patches only
|
||||
| 1.7 | Security patches only
|
||||
| 1.6 | Security patches only
|
||||
| 1.5 | Security patches only
|
||||
|
||||
## Announcements
|
||||
|
||||
New releases are announced in the read-only [announcements mailing list](https://groups.google.com/group/elixir-lang-ann). You can subscribe by sending an email to elixir-lang-ann+subscribe@googlegroups.com and replying to the confirmation email.
|
||||
|
||||
All security releases [will be tagged with `[security]`](https://groups.google.com/forum/#!searchin/elixir-lang-ann/%5Bsecurity%5D%7Csort:date).
|
||||
|
||||
## Reporting a vulnerability
|
||||
|
||||
Please disclose security vulnerabilities privately at elixir-security@googlegroups.com
|
||||
-229
@@ -1,229 +0,0 @@
|
||||
#!/bin/sh
|
||||
set -e
|
||||
|
||||
if [ $# -eq 0 ] || [ "$1" = "--help" ] || [ "$1" = "-h" ]; then
|
||||
echo "Usage: $(basename "$0") [options] [.exs file] [data]
|
||||
|
||||
## General options
|
||||
|
||||
-e \"COMMAND\" Evaluates the given command (*)
|
||||
-h, --help Prints this message and exits
|
||||
-r \"FILE\" Requires the given files/patterns (*)
|
||||
-S SCRIPT Finds and executes the given script in \$PATH
|
||||
-pr \"FILE\" Requires the given files/patterns in parallel (*)
|
||||
-pa \"PATH\" Prepends the given path to Erlang code path (*)
|
||||
-pz \"PATH\" Appends the given path to Erlang code path (*)
|
||||
-v, --version Prints Elixir version and exits
|
||||
|
||||
--app APP Starts the given app and its dependencies (*)
|
||||
--erl \"SWITCHES\" Switches to be passed down to Erlang (*)
|
||||
--eval \"COMMAND\" Evaluates the given command, same as -e (*)
|
||||
--logger-otp-reports BOOL Enables or disables OTP reporting
|
||||
--logger-sasl-reports BOOL Enables or disables SASL reporting
|
||||
--no-halt Does not halt the Erlang VM after execution
|
||||
--werl Uses Erlang's Windows shell GUI (Windows only)
|
||||
|
||||
Options given after the .exs file or -- are passed down to the executed code.
|
||||
Options can be passed to the Erlang runtime using \$ELIXIR_ERL_OPTIONS or --erl.
|
||||
|
||||
## Distribution options
|
||||
|
||||
The following options are related to node distribution.
|
||||
|
||||
--cookie COOKIE Sets a cookie for this distributed node
|
||||
--hidden Makes a hidden node
|
||||
--name NAME Makes and assigns a name to the distributed node
|
||||
--rpc-eval NODE \"COMMAND\" Evaluates the given command on the given remote node (*)
|
||||
--sname NAME Makes and assigns a short name to the distributed node
|
||||
|
||||
## Release options
|
||||
|
||||
The following options are generally used under releases.
|
||||
|
||||
--boot \"FILE\" Uses the given FILE.boot to start the system
|
||||
--boot-var VAR \"VALUE\" Makes \$VAR available as VALUE to FILE.boot (*)
|
||||
--erl-config \"FILE\" Loads configuration in FILE.config written in Erlang (*)
|
||||
--pipe-to \"PIPEDIR\" \"LOGDIR\" Starts the Erlang VM as a named PIPEDIR and LOGDIR
|
||||
--vm-args \"FILE\" Passes the contents in file as arguments to the VM
|
||||
|
||||
--pipe-to starts Elixir detached from console (Unix-like only).
|
||||
It will attempt to create PIPEDIR and LOGDIR if they don't exist.
|
||||
See run_erl to learn more. To reattach, run: to_erl PIPEDIR.
|
||||
|
||||
** Options marked with (*) can be given more than once." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
readlink_f () {
|
||||
cd "$(dirname "$1")" > /dev/null
|
||||
filename="$(basename "$1")"
|
||||
if [ -h "$filename" ]; then
|
||||
readlink_f "$(readlink "$filename")"
|
||||
else
|
||||
echo "$(pwd -P)/$filename"
|
||||
fi
|
||||
}
|
||||
|
||||
# Stores static erlang arguments and --erl (which is passed as is)
|
||||
ERL=""
|
||||
|
||||
# Stores erl arguments preserving spaces/quotes (mimics an array)
|
||||
erl () {
|
||||
eval "E${E}=\$1"
|
||||
E=$((E + 1))
|
||||
}
|
||||
|
||||
# Checks if a string starts with prefix. Usage: starts_with "$STRING" "$PREFIX"
|
||||
starts_with () {
|
||||
case $1 in
|
||||
"$2"*) true;;
|
||||
*) false;;
|
||||
esac
|
||||
}
|
||||
|
||||
ERL_EXEC="erl"
|
||||
MODE="elixir"
|
||||
I=1
|
||||
E=0
|
||||
LENGTH=$#
|
||||
set -- "$@" -extra
|
||||
|
||||
while [ $I -le $LENGTH ]; do
|
||||
S=1
|
||||
case "$1" in
|
||||
+iex)
|
||||
set -- "$@" "$1"
|
||||
MODE="iex"
|
||||
;;
|
||||
+elixirc)
|
||||
set -- "$@" "$1"
|
||||
MODE="elixirc"
|
||||
;;
|
||||
-v|--no-halt)
|
||||
set -- "$@" "$1"
|
||||
;;
|
||||
-e|-r|-pr|-pa|-pz|--app|--eval|--remsh|--dot-iex)
|
||||
S=2
|
||||
set -- "$@" "$1" "$2"
|
||||
;;
|
||||
--rpc-eval)
|
||||
S=3
|
||||
set -- "$@" "$1" "$2" "$3"
|
||||
;;
|
||||
--detached)
|
||||
echo "warning: the --detached option is deprecated" >&2
|
||||
ERL="$ERL -detached"
|
||||
;;
|
||||
--hidden)
|
||||
ERL="$ERL -hidden"
|
||||
;;
|
||||
--logger-otp-reports)
|
||||
S=2
|
||||
if [ "$2" = 'true' ] || [ "$2" = 'false' ]; then
|
||||
ERL="$ERL -logger handle_otp_reports $2"
|
||||
fi
|
||||
;;
|
||||
--logger-sasl-reports)
|
||||
S=2
|
||||
if [ "$2" = 'true' ] || [ "$2" = 'false' ]; then
|
||||
ERL="$ERL -logger handle_sasl_reports $2"
|
||||
fi
|
||||
;;
|
||||
--erl)
|
||||
S=2
|
||||
ERL="$ERL $2"
|
||||
;;
|
||||
--cookie)
|
||||
S=2
|
||||
erl "-setcookie"
|
||||
erl "$2"
|
||||
;;
|
||||
--sname|--name)
|
||||
S=2
|
||||
erl "$(echo "$1" | cut -c 2-)"
|
||||
erl "$2"
|
||||
;;
|
||||
--erl-config)
|
||||
S=2
|
||||
erl "-config"
|
||||
erl "$2"
|
||||
;;
|
||||
--vm-args)
|
||||
S=2
|
||||
erl "-args_file"
|
||||
erl "$2"
|
||||
;;
|
||||
--boot)
|
||||
S=2
|
||||
erl "-boot"
|
||||
erl "$2"
|
||||
;;
|
||||
--boot-var)
|
||||
S=3
|
||||
erl "-boot_var"
|
||||
erl "$2"
|
||||
erl "$3"
|
||||
;;
|
||||
--pipe-to)
|
||||
S=3
|
||||
RUN_ERL_PIPE="$2"
|
||||
RUN_ERL_LOG="$3"
|
||||
if [ "$(starts_with "$RUN_ERL_PIPE" "-")" ]; then
|
||||
echo "--pipe-to : PIPEDIR cannot be a switch" >&2 && exit 1
|
||||
elif [ "$(starts_with "$RUN_ERL_LOG" "-")" ]; then
|
||||
echo "--pipe-to : LOGDIR cannot be a switch" >&2 && exit 1
|
||||
fi
|
||||
;;
|
||||
--werl)
|
||||
if [ "$OS" = "Windows_NT" ]; then ERL_EXEC="werl"; fi
|
||||
;;
|
||||
*)
|
||||
while [ $I -le $LENGTH ]; do
|
||||
I=$((I + 1))
|
||||
set -- "$@" "$1"
|
||||
shift
|
||||
done
|
||||
break
|
||||
;;
|
||||
esac
|
||||
|
||||
I=$((I + S))
|
||||
shift $S
|
||||
done
|
||||
|
||||
I=$((E - 1))
|
||||
while [ $I -ge 0 ]; do
|
||||
eval "VAL=\$E$I"
|
||||
set -- "$VAL" "$@"
|
||||
I=$((I - 1))
|
||||
done
|
||||
|
||||
SELF=$(readlink_f "$0")
|
||||
SCRIPT_PATH=$(dirname "$SELF")
|
||||
|
||||
if [ "$OSTYPE" = "cygwin" ]; then SCRIPT_PATH=$(cygpath -m "$SCRIPT_PATH"); fi
|
||||
if [ "$MODE" != "iex" ]; then ERL="-noshell -s elixir start_cli $ERL"; fi
|
||||
|
||||
if [ "$OS" != "Windows_NT" ]; then
|
||||
if test -t 1 -a -t 2; then ERL="-elixir ansi_enabled true $ERL"; fi
|
||||
fi
|
||||
|
||||
ERTS_BIN=
|
||||
set -- "$ERTS_BIN$ERL_EXEC" -pa "$SCRIPT_PATH"/../lib/*/ebin $ELIXIR_ERL_OPTIONS $ERL "$@"
|
||||
|
||||
if [ -n "$RUN_ERL_PIPE" ]; then
|
||||
ESCAPED=""
|
||||
for PART in "$@"; do
|
||||
ESCAPED="$ESCAPED $(echo "$PART" | sed 's/[^a-zA-Z0-9_\-\/]/\\&/g')"
|
||||
done
|
||||
mkdir -p "$RUN_ERL_PIPE"
|
||||
mkdir -p "$RUN_ERL_LOG"
|
||||
ERL_EXEC="run_erl"
|
||||
set -- "$ERTS_BIN$ERL_EXEC" -daemon "$RUN_ERL_PIPE/" "$RUN_ERL_LOG/" "$ESCAPED"
|
||||
fi
|
||||
|
||||
if [ -n "$ELIXIR_CLI_DRY_RUN" ]; then
|
||||
echo "$@"
|
||||
else
|
||||
exec "$@"
|
||||
fi
|
||||
-164
@@ -1,164 +0,0 @@
|
||||
@if defined ELIXIR_CLI_ECHO (@echo on) else (@echo off)
|
||||
setlocal enabledelayedexpansion
|
||||
if ""%1""=="""" goto documentation
|
||||
if /I ""%1""==""--help"" goto documentation
|
||||
if /I ""%1""==""-h"" goto documentation
|
||||
if /I ""%1""==""/h"" goto documentation
|
||||
if ""%1""==""/?"" goto documentation
|
||||
goto parseopts
|
||||
|
||||
:documentation
|
||||
echo Usage: %~nx0 [options] [.exs file] [data]
|
||||
echo.
|
||||
echo ## General options
|
||||
echo.
|
||||
echo -e "COMMAND" Evaluates the given command (*)
|
||||
echo -h, --help Prints this message and exits
|
||||
echo -r "FILE" Requires the given files/patterns (*)
|
||||
echo -S SCRIPT Finds and executes the given script in $PATH
|
||||
echo -pr "FILE" Requires the given files/patterns in parallel (*)
|
||||
echo -pa "PATH" Prepends the given path to Erlang code path (*)
|
||||
echo -pz "PATH" Appends the given path to Erlang code path (*)
|
||||
echo -v, --version Prints Elixir version and exits
|
||||
echo.
|
||||
echo --app APP Starts the given app and its dependencies (*)
|
||||
echo --erl "SWITCHES" Switches to be passed down to Erlang (*)
|
||||
echo --eval "COMMAND" Evaluates the given command, same as -e (*)
|
||||
echo --logger-otp-reports BOOL Enables or disables OTP reporting
|
||||
echo --logger-sasl-reports BOOL Enables or disables SASL reporting
|
||||
echo --no-halt Does not halt the Erlang VM after execution
|
||||
echo --werl Uses Erlang's Windows shell GUI (Windows only)
|
||||
echo.
|
||||
echo Options given after the .exs file or -- are passed down to the executed code.
|
||||
echo Options can be passed to the Erlang runtime using $ELIXIR_ERL_OPTIONS or --erl.
|
||||
echo.
|
||||
echo ## Distribution options
|
||||
echo.
|
||||
echo The following options are related to node distribution.
|
||||
echo.
|
||||
echo --cookie COOKIE Sets a cookie for this distributed node
|
||||
echo --hidden Makes a hidden node
|
||||
echo --name NAME Makes and assigns a name to the distributed node
|
||||
echo --rpc-eval NODE "COMMAND" Evaluates the given command on the given remote node (*)
|
||||
echo --sname NAME Makes and assigns a short name to the distributed node
|
||||
echo.
|
||||
echo ## Release options
|
||||
echo.
|
||||
echo The following options are generally used under releases.
|
||||
echo.
|
||||
echo --boot "FILE" Uses the given FILE.boot to start the system
|
||||
echo --boot-var VAR "VALUE" Makes $VAR available as VALUE to FILE.boot (*)
|
||||
echo --erl-config "FILE" Loads configuration in FILE.config written in Erlang (*)
|
||||
echo --vm-args "FILE" Passes the contents in file as arguments to the VM
|
||||
echo.
|
||||
echo --pipe-to is not supported on Windows. If set, Elixir won't boot.
|
||||
echo.
|
||||
echo ** Options marked with (*) can be given more than once.
|
||||
goto end
|
||||
|
||||
:parseopts
|
||||
|
||||
rem Parameters for Elixir
|
||||
set parsElixir=
|
||||
|
||||
rem Parameters for Erlang
|
||||
set parsErlang=
|
||||
|
||||
rem Optional parameters before the "-extra" parameter
|
||||
set beforeExtra=
|
||||
|
||||
rem Option which determines whether the loop is over
|
||||
set endLoop=0
|
||||
|
||||
rem Designates which mode / Elixir component to run as
|
||||
set runMode="elixir"
|
||||
|
||||
rem Designates the path to the current script
|
||||
set SCRIPT_PATH=%~dp0
|
||||
|
||||
rem Designates the path to the ERTS system
|
||||
set ERTS_BIN=
|
||||
|
||||
rem Recursive loop called for each parameter that parses the cmd line parameters
|
||||
:startloop
|
||||
set "par=%~1"
|
||||
if "!par!"=="" (
|
||||
rem skip if no parameter
|
||||
goto expand_erl_libs
|
||||
)
|
||||
shift
|
||||
set par="!par:"=\"!"
|
||||
if !endLoop! == 1 (
|
||||
set parsElixir=!parsElixir! !par!
|
||||
goto startloop
|
||||
)
|
||||
rem ******* EXECUTION OPTIONS **********************
|
||||
if !par!=="--werl" (set useWerl=1 && goto startloop)
|
||||
if !par!=="+iex" (set parsElixir=!parsElixir! +iex && set runMode="iex" && goto startloop)
|
||||
if !par!=="+elixirc" (set parsElixir=!parsElixir! +elixirc && set runMode="elixirc" && goto startloop)
|
||||
rem ******* EVAL PARAMETERS ************************
|
||||
if ""==!par:-e=! (
|
||||
set "VAR=%~1"
|
||||
set parsElixir=!parsElixir! -e "!VAR:"=\"!"
|
||||
shift
|
||||
goto startloop
|
||||
)
|
||||
if ""==!par:--eval=! (
|
||||
set "VAR=%~1"
|
||||
set parsElixir=!parsElixir! --eval "!VAR:"=\"!"
|
||||
shift
|
||||
goto startloop
|
||||
)
|
||||
if ""==!par:--rpc-eval=! (
|
||||
set "VAR=%~2"
|
||||
set parsElixir=!parsElixir! --rpc-eval %1 "!VAR:"=\"!"
|
||||
shift
|
||||
shift
|
||||
goto startloop
|
||||
)
|
||||
rem ******* ELIXIR PARAMETERS **********************
|
||||
if ""==!par:-r=! (set "parsElixir=!parsElixir! -r %1" && shift && goto startloop)
|
||||
if ""==!par:-pr=! (set "parsElixir=!parsElixir! -pr %1" && shift && goto startloop)
|
||||
if ""==!par:-pa=! (set "parsElixir=!parsElixir! -pa %1" && shift && goto startloop)
|
||||
if ""==!par:-pz=! (set "parsElixir=!parsElixir! -pz %1" && shift && goto startloop)
|
||||
if ""==!par:-v=! (set "parsElixir=!parsElixir! -v" && goto startloop)
|
||||
if ""==!par:--app=! (set "parsElixir=!parsElixir! --app %1" && shift && goto startloop)
|
||||
if ""==!par:--no-halt=! (set "parsElixir=!parsElixir! --no-halt" && goto startloop)
|
||||
if ""==!par:--remsh=! (set "parsElixir=!parsElixir! --remsh %1" && shift && goto startloop)
|
||||
if ""==!par:--dot-iex=! (set "parsElixir=!parsElixir! --dot-iex %1" && shift && goto startloop)
|
||||
rem ******* ERLANG PARAMETERS **********************
|
||||
if ""==!par:--boot=! (set "parsErlang=!parsErlang! -boot %1" && shift && goto startloop)
|
||||
if ""==!par:--boot-var=! (set "parsErlang=!parsErlang! -boot_var %1 %2" && shift && shift && goto startloop)
|
||||
if ""==!par:--cookie=! (set "parsErlang=!parsErlang! -setcookie %1" && shift && goto startloop)
|
||||
if ""==!par:--hidden=! (set "parsErlang=!parsErlang! -hidden" && goto startloop)
|
||||
if ""==!par:--detached=! (set "parsErlang=!parsErlang! -detached" && echo warning: the --detached option is deprecated && goto startloop)
|
||||
if ""==!par:--erl-config=! (set "parsErlang=!parsErlang! -config %1" && shift && goto startloop)
|
||||
if ""==!par:--logger-otp-reports=! (set "parsErlang=!parsErlang! -logger handle_otp_reports %1" && shift && goto startloop)
|
||||
if ""==!par:--logger-sasl-reports=! (set "parsErlang=!parsErlang! -logger handle_sasl_reports %1" && shift && goto startloop)
|
||||
if ""==!par:--name=! (set "parsErlang=!parsErlang! -name %1" && shift && goto startloop)
|
||||
if ""==!par:--sname=! (set "parsErlang=!parsErlang! -sname %1" && shift && goto startloop)
|
||||
if ""==!par:--vm-args=! (set "parsErlang=!parsErlang! -args_file %1" && shift && goto startloop)
|
||||
if ""==!par:--erl=! (set "beforeExtra=!beforeExtra! %~1" && shift && goto startloop)
|
||||
if ""==!par:--pipe-to=! (echo --pipe-to : Option is not supported on Windows && goto end)
|
||||
set endLoop=1
|
||||
set parsElixir=!parsElixir! !par!
|
||||
goto startloop
|
||||
|
||||
:expand_erl_libs
|
||||
rem expand all ebin paths as Windows does not support the ..\*\ebin wildcard
|
||||
set ext_libs=
|
||||
for /d %%d in ("!SCRIPT_PATH!..\lib\*.") do (
|
||||
set ext_libs=!ext_libs! -pa "%%~fd\ebin"
|
||||
)
|
||||
|
||||
:run
|
||||
if not !runMode! == "iex" (
|
||||
set beforeExtra=-noshell -s elixir start_cli !beforeExtra!
|
||||
)
|
||||
if defined useWerl (
|
||||
start "" "!ERTS_BIN!werl.exe" !ext_libs! !ELIXIR_ERL_OPTIONS! !parsErlang! !beforeExtra! -extra !parsElixir!
|
||||
) else (
|
||||
"!ERTS_BIN!erl.exe" !ext_libs! !ELIXIR_ERL_OPTIONS! !parsErlang! !beforeExtra! -extra !parsElixir!
|
||||
)
|
||||
:end
|
||||
endlocal
|
||||
-35
@@ -1,35 +0,0 @@
|
||||
#!/bin/sh
|
||||
set -e
|
||||
|
||||
if [ $# -eq 0 ] || [ "$1" = "--help" ] || [ "$1" = "-h" ]; then
|
||||
echo "Usage: $(basename "$0") [elixir switches] [compiler switches] [.ex files]
|
||||
|
||||
-h, --help Prints this message and exits
|
||||
-o The directory to output compiled files
|
||||
-v, --version Prints Elixir version and exits
|
||||
|
||||
--ignore-module-conflict Does not emit warnings if a module was previously defined
|
||||
--no-debug-info Does not attach debug info to compiled modules
|
||||
--no-docs Does not attach documentation to compiled modules
|
||||
--verbose Prints compilation status
|
||||
--warnings-as-errors Treats warnings as errors and return non-zero exit code
|
||||
|
||||
Options given after -- are passed down to the executed code.
|
||||
Options can be passed to the Erlang runtime using \$ELIXIR_ERL_OPTIONS.
|
||||
Options can be passed to the Erlang compiler using \$ERL_COMPILER_OPTIONS." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
readlink_f () {
|
||||
cd "$(dirname "$1")" > /dev/null
|
||||
filename="$(basename "$1")"
|
||||
if [ -h "$filename" ]; then
|
||||
readlink_f "$(readlink "$filename")"
|
||||
else
|
||||
echo "$(pwd -P)/$filename"
|
||||
fi
|
||||
}
|
||||
|
||||
SELF=$(readlink_f "$0")
|
||||
SCRIPT_PATH=$(dirname "$SELF")
|
||||
exec "$SCRIPT_PATH"/elixir +elixirc "$@"
|
||||
@@ -1,36 +0,0 @@
|
||||
@if defined ELIXIR_CLI_ECHO (@echo on) else (@echo off)
|
||||
setlocal
|
||||
set argc=0
|
||||
for %%A in (%*) do (
|
||||
if /I "%%A"=="--help" goto documentation
|
||||
if /I "%%A"=="-h" goto documentation
|
||||
if /I "%%A"=="/h" goto documentation
|
||||
if "%%A"=="/?" goto documentation
|
||||
set /A argc+=1
|
||||
)
|
||||
if %argc%==0 goto documentation
|
||||
goto run
|
||||
|
||||
:documentation
|
||||
echo Usage: %~nx0 [elixir switches] [compiler switches] [.ex files]
|
||||
echo.
|
||||
echo -o The directory to output compiled files
|
||||
echo.
|
||||
echo --help, -h Prints this message and exits
|
||||
echo --ignore-module-conflict Does not emit warnings if a module was previously defined
|
||||
echo --no-debug-info Does not attach debug info to compiled modules
|
||||
echo --no-docs Does not attach documentation to compiled modules
|
||||
echo --verbose Prints compilation status
|
||||
echo --version, -v Prints Elixir version and exits
|
||||
echo --warnings-as-errors Treats warnings as errors and returns non-zero exit code
|
||||
echo.
|
||||
echo ** Options given after -- are passed down to the executed code
|
||||
echo ** Options can be passed to the Erlang runtime using ELIXIR_ERL_OPTIONS
|
||||
echo ** Options can be passed to the Erlang compiler using ERL_COMPILER_OPTIONS
|
||||
goto end
|
||||
|
||||
:run
|
||||
call "%~dp0\elixir.bat" +elixirc %*
|
||||
|
||||
:end
|
||||
endlocal
|
||||
@@ -1,29 +0,0 @@
|
||||
#!/bin/sh
|
||||
set -e
|
||||
|
||||
if [ "$1" = "--help" ] || [ "$1" = "-h" ]; then
|
||||
echo "Usage: $(basename "$0") [options] [.exs file] [data]
|
||||
|
||||
The following options are exclusive to IEx:
|
||||
|
||||
--dot-iex \"PATH\" Overrides default .iex.exs file and uses path instead;
|
||||
path can be empty, then no file will be loaded
|
||||
--remsh NAME Connects to a node using a remote shell
|
||||
|
||||
It accepts all other options listed by \"elixir --help\"." >&2
|
||||
exit 1
|
||||
fi
|
||||
|
||||
readlink_f () {
|
||||
cd "$(dirname "$1")" > /dev/null
|
||||
filename="$(basename "$1")"
|
||||
if [ -h "$filename" ]; then
|
||||
readlink_f "$(readlink "$filename")"
|
||||
else
|
||||
echo "$(pwd -P)/$filename"
|
||||
fi
|
||||
}
|
||||
|
||||
SELF=$(readlink_f "$0")
|
||||
SCRIPT_PATH=$(dirname "$SELF")
|
||||
exec "$SCRIPT_PATH"/elixir --no-halt --erl "-noshell -user Elixir.IEx.CLI" +iex "$@"
|
||||
-27
@@ -1,27 +0,0 @@
|
||||
@if defined ELIXIR_CLI_ECHO (@echo on) else (@echo off)
|
||||
setlocal
|
||||
if /I ""%1""==""--help"" goto documentation
|
||||
if /I ""%1""==""-h"" goto documentation
|
||||
if /I ""%1""==""/h"" goto documentation
|
||||
if ""%1""==""/?"" goto documentation
|
||||
goto run
|
||||
|
||||
:documentation
|
||||
echo Usage: %~nx0 [options] [.exs file] [data]
|
||||
echo.
|
||||
echo The following options are exclusive to IEx:
|
||||
echo.
|
||||
echo --dot-iex "PATH" Overrides default .iex.exs file and uses path instead;
|
||||
echo path can be empty, then no file will be loaded
|
||||
echo --remsh NAME Connects to a node using a remote shell
|
||||
echo --werl Uses Erlang's Windows shell GUI (Windows only)
|
||||
echo.
|
||||
echo Set the IEX_WITH_WERL environment variable to always use werl.
|
||||
echo It accepts all other options listed by "elixir --help".
|
||||
goto end
|
||||
|
||||
:run
|
||||
if defined IEX_WITH_WERL (@set __ELIXIR_IEX_FLAGS=--werl) else (set __ELIXIR_IEX_FLAGS=)
|
||||
call "%~dp0\elixir.bat" --no-halt --erl "-noshell -user Elixir.IEx.CLI" +iex %__ELIXIR_IEX_FLAGS% %*
|
||||
:end
|
||||
endlocal
|
||||
@@ -1,2 +0,0 @@
|
||||
@if defined ELIXIR_CLI_ECHO (@echo on) else (@echo off)
|
||||
call "%~dp0\elixir.bat" "%~dp0\mix" %*
|
||||
-23
@@ -1,23 +0,0 @@
|
||||
# Store path to mix.bat as a FileInfo object
|
||||
$mixBatPath = (Get-ChildItem (((Get-ChildItem $MyInvocation.MyCommand.Path).Directory.FullName) + '\mix.bat'))
|
||||
$newArgs = @()
|
||||
|
||||
for ($i = 0; $i -lt $args.length; $i++)
|
||||
{
|
||||
if ($args[$i] -is [array])
|
||||
{
|
||||
# Commas created the array so we need to reintroduce those commas
|
||||
for ($j = 0; $j -lt $args[$i].length - 1; $j++)
|
||||
{
|
||||
$newArgs += ($args[$i][$j] + ',')
|
||||
}
|
||||
$newArgs += $args[$i][-1]
|
||||
}
|
||||
else
|
||||
{
|
||||
$newArgs += $args[$i]
|
||||
}
|
||||
}
|
||||
|
||||
# Corrected arguments are ready to pass to batch file
|
||||
& $mixBatPath $newArgs
|
||||
@@ -0,0 +1,7 @@
|
||||
import Config
|
||||
|
||||
import_config "#{config_env()}.exs"
|
||||
|
||||
if config_env() == :test do
|
||||
config :logger, level: :warning
|
||||
end
|
||||
@@ -0,0 +1,3 @@
|
||||
import Config
|
||||
|
||||
# Dev: no special config — all runtime settings come from env vars.
|
||||
@@ -0,0 +1,5 @@
|
||||
import Config
|
||||
|
||||
# Production: no hardcoded values here. All runtime config (PORT, AGENTS,
|
||||
# ADAPTER_API_KEY, CHAT_WEBHOOK_BASIC) comes from the systemd EnvironmentFile
|
||||
# in the NixOS service module.
|
||||
@@ -0,0 +1,7 @@
|
||||
import Config
|
||||
|
||||
# Test environment: the app starts with an empty agent store (no AGENTS env
|
||||
# seeding — agents are managed via the admin API). ADAPTER_API_KEY /
|
||||
# ADMIN_API_KEY are set in test/test_helper.exs. AGENTS_FILE must be set HERE
|
||||
# (config loads before the app boots) to a writable tmp path.
|
||||
System.put_env("AGENTS_FILE", Path.join(System.tmp_dir!(), "n8n-openai-test-agents.json"))
|
||||
Generated
+27
@@ -0,0 +1,27 @@
|
||||
{
|
||||
"nodes": {
|
||||
"nixpkgs": {
|
||||
"locked": {
|
||||
"lastModified": 1788881743,
|
||||
"narHash": "sha256-2V9GZGvPfrNzxFozhI9dcqV+c3QdA8YZrvAAzqEB+dI=",
|
||||
"owner": "NixOS",
|
||||
"repo": "nixpkgs",
|
||||
"rev": "d6524aaca2ff07876657ae2b323f24be4874944b",
|
||||
"type": "github"
|
||||
},
|
||||
"original": {
|
||||
"owner": "NixOS",
|
||||
"ref": "nixos-unstable",
|
||||
"repo": "nixpkgs",
|
||||
"type": "github"
|
||||
}
|
||||
},
|
||||
"root": {
|
||||
"inputs": {
|
||||
"nixpkgs": "nixpkgs"
|
||||
}
|
||||
}
|
||||
},
|
||||
"root": "root",
|
||||
"version": 7
|
||||
}
|
||||
@@ -0,0 +1,48 @@
|
||||
{
|
||||
description = "OpenAI-compatible adapter exposing n8n chat agents behind /v1/chat/completions";
|
||||
|
||||
inputs = {
|
||||
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
|
||||
};
|
||||
|
||||
outputs =
|
||||
{ self, nixpkgs, ... }:
|
||||
let
|
||||
supportedSystems = [
|
||||
"x86_64-linux"
|
||||
"aarch64-linux"
|
||||
];
|
||||
forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
|
||||
in
|
||||
{
|
||||
packages = forAllSystems (
|
||||
system:
|
||||
let
|
||||
pkgs = import nixpkgs { inherit system; };
|
||||
beamPackages = pkgs.beamPackages;
|
||||
in
|
||||
{
|
||||
default = beamPackages.mixRelease {
|
||||
pname = "n8n-openai-adapter";
|
||||
version = "0.1.0";
|
||||
src = self;
|
||||
mixFodDeps = beamPackages.fetchMixDeps {
|
||||
pname = "n8n-openai-adapter";
|
||||
version = "0.1.0";
|
||||
src = self;
|
||||
hash = "sha256-sdAhpZUeF33V9xjEa/z/aTmCllfetMjO/1XyfJfUNao=";
|
||||
};
|
||||
};
|
||||
}
|
||||
);
|
||||
|
||||
overlays.default = final: prev: {
|
||||
n8n-openai-adapter = self.packages.${final.stdenv.system}.default;
|
||||
};
|
||||
|
||||
# Proper NixOS module: consume with
|
||||
# imports = [ inputs.n8n-openai-adapter.nixosModules.default ];
|
||||
# services.n8n-openai-adapter = { enable = true; domain = "..."; port = 8134; };
|
||||
nixosModules.default = import ./nixos-module.nix;
|
||||
};
|
||||
}
|
||||
@@ -1,230 +0,0 @@
|
||||
defmodule EEx.SyntaxError do
|
||||
defexception [:message, :file, :line]
|
||||
|
||||
@impl true
|
||||
def message(exception) do
|
||||
"#{exception.file}:#{exception.line}: #{exception.message}"
|
||||
end
|
||||
end
|
||||
|
||||
defmodule EEx do
|
||||
@moduledoc ~S"""
|
||||
EEx stands for Embedded Elixir. It allows you to embed
|
||||
Elixir code inside a string in a robust way.
|
||||
|
||||
iex> EEx.eval_string("foo <%= bar %>", bar: "baz")
|
||||
"foo baz"
|
||||
|
||||
## API
|
||||
|
||||
This module provides 3 main APIs for you to use:
|
||||
|
||||
1. Evaluate a string (`eval_string`) or a file (`eval_file`)
|
||||
directly. This is the simplest API to use but also the
|
||||
slowest, since the code is evaluated and not compiled before.
|
||||
|
||||
2. Define a function from a string (`function_from_string`)
|
||||
or a file (`function_from_file`). This allows you to embed
|
||||
the template as a function inside a module which will then
|
||||
be compiled. This is the preferred API if you have access
|
||||
to the template at compilation time.
|
||||
|
||||
3. Compile a string (`compile_string`) or a file (`compile_file`)
|
||||
into Elixir syntax tree. This is the API used by both functions
|
||||
above and is available to you if you want to provide your own
|
||||
ways of handling the compiled template.
|
||||
|
||||
## Options
|
||||
|
||||
All functions in this module accept EEx-related options.
|
||||
They are:
|
||||
|
||||
* `:line` - the line to be used as the template start. Defaults to 1.
|
||||
* `:file` - the file to be used in the template. Defaults to the given
|
||||
file the template is read from or to "nofile" when compiling from a string.
|
||||
* `:engine` - the EEx engine to be used for compilation.
|
||||
* `:trim` - trims whitespace left/right of quotation tags. If a quotation
|
||||
tag appears on its own in a given line, line endings are also removed.
|
||||
|
||||
## Engine
|
||||
|
||||
EEx has the concept of engines which allows you to modify or
|
||||
transform the code extracted from the given string or file.
|
||||
|
||||
By default, `EEx` uses the `EEx.SmartEngine` that provides some
|
||||
conveniences on top of the simple `EEx.Engine`.
|
||||
|
||||
### Tags
|
||||
|
||||
`EEx.SmartEngine` supports the following tags:
|
||||
|
||||
<% Elixir expression - inline with output %>
|
||||
<%= Elixir expression - replace with result %>
|
||||
<%% EEx quotation - returns the contents inside %>
|
||||
<%# Comments - they are discarded from source %>
|
||||
|
||||
All expressions that output something to the template
|
||||
**must** use the equals sign (`=`). Since everything in
|
||||
Elixir is an expression, there are no exceptions for this rule.
|
||||
For example, while some template languages would special-case
|
||||
`if/2` clauses, they are treated the same in EEx and
|
||||
also require `=` in order to have their result printed:
|
||||
|
||||
<%= if true do %>
|
||||
It is obviously true
|
||||
<% else %>
|
||||
This will never appear
|
||||
<% end %>
|
||||
|
||||
Notice that different engines may have different rules
|
||||
for each tag. Other tags may be added in future versions.
|
||||
|
||||
### Macros
|
||||
|
||||
`EEx.SmartEngine` also adds some macros to your template.
|
||||
An example is the `@` macro which allows easy data access
|
||||
in a template:
|
||||
|
||||
iex> EEx.eval_string("<%= @foo %>", assigns: [foo: 1])
|
||||
"1"
|
||||
|
||||
In other words, `<%= @foo %>` translates to:
|
||||
|
||||
<%= {:ok, v} = Access.fetch(assigns, :foo); v %>
|
||||
|
||||
The `assigns` extension is useful when the number of variables
|
||||
required by the template is not specified at compilation time.
|
||||
"""
|
||||
|
||||
@doc """
|
||||
Generates a function definition from the string.
|
||||
|
||||
The kind (`:def` or `:defp`) must be given, the
|
||||
function name, its arguments and the compilation options.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> defmodule Sample do
|
||||
...> require EEx
|
||||
...> EEx.function_from_string(:def, :sample, "<%= a + b %>", [:a, :b])
|
||||
...> end
|
||||
iex> Sample.sample(1, 2)
|
||||
"3"
|
||||
|
||||
"""
|
||||
defmacro function_from_string(kind, name, source, args \\ [], options \\ []) do
|
||||
quote bind_quoted: binding() do
|
||||
info = Keyword.merge([file: __ENV__.file, line: __ENV__.line], options)
|
||||
args = Enum.map(args, fn arg -> {arg, [line: info[:line]], nil} end)
|
||||
compiled = EEx.compile_string(source, info)
|
||||
|
||||
case kind do
|
||||
:def -> def unquote(name)(unquote_splicing(args)), do: unquote(compiled)
|
||||
:defp -> defp unquote(name)(unquote_splicing(args)), do: unquote(compiled)
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Generates a function definition from the file contents.
|
||||
|
||||
The kind (`:def` or `:defp`) must be given, the
|
||||
function name, its arguments and the compilation options.
|
||||
|
||||
This function is useful in case you have templates but
|
||||
you want to precompile inside a module for speed.
|
||||
|
||||
## Examples
|
||||
|
||||
# sample.eex
|
||||
<%= a + b %>
|
||||
|
||||
# sample.ex
|
||||
defmodule Sample do
|
||||
require EEx
|
||||
EEx.function_from_file(:def, :sample, "sample.eex", [:a, :b])
|
||||
end
|
||||
|
||||
# iex
|
||||
Sample.sample(1, 2)
|
||||
#=> "3"
|
||||
|
||||
"""
|
||||
defmacro function_from_file(kind, name, file, args \\ [], options \\ []) do
|
||||
quote bind_quoted: binding() do
|
||||
info = Keyword.merge(options, file: file, line: 1)
|
||||
args = Enum.map(args, fn arg -> {arg, [line: 1], nil} end)
|
||||
compiled = EEx.compile_file(file, info)
|
||||
|
||||
@external_resource file
|
||||
@file file
|
||||
case kind do
|
||||
:def -> def unquote(name)(unquote_splicing(args)), do: unquote(compiled)
|
||||
:defp -> defp unquote(name)(unquote_splicing(args)), do: unquote(compiled)
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets a string `source` and generate a quoted expression
|
||||
that can be evaluated by Elixir or compiled to a function.
|
||||
"""
|
||||
@spec compile_string(String.t(), keyword) :: Macro.t()
|
||||
def compile_string(source, options \\ []) when is_binary(source) and is_list(options) do
|
||||
EEx.Compiler.compile(source, options)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets a `filename` and generate a quoted expression
|
||||
that can be evaluated by Elixir or compiled to a function.
|
||||
"""
|
||||
@spec compile_file(String.t(), keyword) :: Macro.t()
|
||||
def compile_file(filename, options \\ []) when is_binary(filename) and is_list(options) do
|
||||
options = Keyword.merge(options, file: filename, line: 1)
|
||||
compile_string(File.read!(filename), options)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets a string `source` and evaluate the values using the `bindings`.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> EEx.eval_string("foo <%= bar %>", bar: "baz")
|
||||
"foo baz"
|
||||
|
||||
"""
|
||||
@spec eval_string(String.t(), keyword, keyword) :: any
|
||||
def eval_string(source, bindings \\ [], options \\ [])
|
||||
when is_binary(source) and is_list(bindings) and is_list(options) do
|
||||
compiled = compile_string(source, options)
|
||||
do_eval(compiled, bindings, options)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets a `filename` and evaluate the values using the `bindings`.
|
||||
|
||||
## Examples
|
||||
|
||||
# sample.eex
|
||||
foo <%= bar %>
|
||||
|
||||
# iex
|
||||
EEx.eval_file("sample.eex", bar: "baz")
|
||||
#=> "foo baz"
|
||||
|
||||
"""
|
||||
@spec eval_file(String.t(), keyword, keyword) :: any
|
||||
def eval_file(filename, bindings \\ [], options \\ [])
|
||||
when is_binary(filename) and is_list(bindings) and is_list(options) do
|
||||
options = Keyword.put(options, :file, filename)
|
||||
compiled = compile_file(filename, options)
|
||||
do_eval(compiled, bindings, options)
|
||||
end
|
||||
|
||||
### Helpers
|
||||
|
||||
defp do_eval(compiled, bindings, options) do
|
||||
{result, _} = Code.eval_quoted(compiled, bindings, options)
|
||||
result
|
||||
end
|
||||
end
|
||||
@@ -1,200 +0,0 @@
|
||||
defmodule EEx.Compiler do
|
||||
@moduledoc false
|
||||
|
||||
# When changing this setting, don't forget to update the docs for EEx
|
||||
@default_engine EEx.SmartEngine
|
||||
|
||||
@doc """
|
||||
This is the compilation entry point. It glues the tokenizer
|
||||
and the engine together by handling the tokens and invoking
|
||||
the engine every time a full expression or text is received.
|
||||
"""
|
||||
@spec compile(String.t(), keyword) :: Macro.t()
|
||||
def compile(source, opts) when is_binary(source) and is_list(opts) do
|
||||
file = opts[:file] || "nofile"
|
||||
line = opts[:line] || 1
|
||||
trim = opts[:trim] || false
|
||||
|
||||
case EEx.Tokenizer.tokenize(source, line, trim: trim) do
|
||||
{:ok, tokens} ->
|
||||
state = %{
|
||||
engine: opts[:engine] || @default_engine,
|
||||
file: file,
|
||||
line: line,
|
||||
quoted: [],
|
||||
start_line: nil
|
||||
}
|
||||
|
||||
init = state.engine.init(opts)
|
||||
generate_buffer(tokens, init, [], state)
|
||||
|
||||
{:error, line, message} ->
|
||||
raise EEx.SyntaxError, line: line, file: file, message: message
|
||||
end
|
||||
end
|
||||
|
||||
# Generates the buffers by handling each expression from the tokenizer.
|
||||
# It returns Macro.t/0 or it raises.
|
||||
|
||||
defp generate_buffer([{:text, chars} | rest], buffer, scope, state) do
|
||||
buffer = state.engine.handle_text(buffer, IO.chardata_to_string(chars))
|
||||
generate_buffer(rest, buffer, scope, state)
|
||||
end
|
||||
|
||||
defp generate_buffer([{:expr, line, mark, chars, _} | rest], buffer, scope, state) do
|
||||
expr = Code.string_to_quoted!(chars, line: line, file: state.file)
|
||||
buffer = state.engine.handle_expr(buffer, IO.chardata_to_string(mark), expr)
|
||||
generate_buffer(rest, buffer, scope, state)
|
||||
end
|
||||
|
||||
defp generate_buffer([{:start_expr, start_line, mark, chars, _} | rest], buffer, scope, state) do
|
||||
{contents, line, rest} = look_ahead_middle(rest, start_line, chars)
|
||||
|
||||
{contents, rest} =
|
||||
generate_buffer(
|
||||
rest,
|
||||
state.engine.handle_begin(buffer),
|
||||
[contents | scope],
|
||||
%{state | quoted: [], line: line, start_line: start_line}
|
||||
)
|
||||
|
||||
buffer = state.engine.handle_expr(buffer, IO.chardata_to_string(mark), contents)
|
||||
generate_buffer(rest, buffer, scope, state)
|
||||
end
|
||||
|
||||
defp generate_buffer(
|
||||
[{:middle_expr, line, '', chars, _} | rest],
|
||||
buffer,
|
||||
[current | scope],
|
||||
state
|
||||
) do
|
||||
{wrapped, state} = wrap_expr(current, line, buffer, chars, state)
|
||||
state = %{state | line: line}
|
||||
generate_buffer(rest, state.engine.handle_begin(buffer), [wrapped | scope], state)
|
||||
end
|
||||
|
||||
defp generate_buffer(
|
||||
[{:middle_expr, line, modifier, chars, trimmed?} | t],
|
||||
buffer,
|
||||
[_ | _] = scope,
|
||||
state
|
||||
) do
|
||||
message =
|
||||
"unexpected beginning of EEx tag \"<%#{modifier}\" on \"<%#{modifier}#{chars}%>\", " <>
|
||||
"please remove \"#{modifier}\" accordingly"
|
||||
|
||||
:elixir_errors.erl_warn(line, state.file, message)
|
||||
generate_buffer([{:middle_expr, line, '', chars, trimmed?} | t], buffer, scope, state)
|
||||
# TODO: Make this an error on Elixir v2.0 since it accidentally worked previously.
|
||||
# raise EEx.SyntaxError, message: message, file: state.file, line: line
|
||||
end
|
||||
|
||||
defp generate_buffer([{:middle_expr, line, _, chars, _} | _], _buffer, [], state) do
|
||||
raise EEx.SyntaxError,
|
||||
message: "unexpected middle of expression <%#{chars}%>",
|
||||
file: state.file,
|
||||
line: line
|
||||
end
|
||||
|
||||
defp generate_buffer([{:end_expr, line, '', chars, _} | rest], buffer, [current | _], state) do
|
||||
{wrapped, state} = wrap_expr(current, line, buffer, chars, state)
|
||||
tuples = Code.string_to_quoted!(wrapped, line: state.start_line, file: state.file)
|
||||
buffer = insert_quoted(tuples, state.quoted)
|
||||
{buffer, rest}
|
||||
end
|
||||
|
||||
defp generate_buffer(
|
||||
[{:end_expr, line, modifier, chars, trimmed?} | t],
|
||||
buffer,
|
||||
[_ | _] = scope,
|
||||
state
|
||||
) do
|
||||
message =
|
||||
"unexpected beginning of EEx tag \"<%#{modifier}\" on end of " <>
|
||||
"expression \"<%#{modifier}#{chars}%>\", please remove \"#{modifier}\" accordingly"
|
||||
|
||||
:elixir_errors.erl_warn(line, state.file, message)
|
||||
generate_buffer([{:end_expr, line, '', chars, trimmed?} | t], buffer, scope, state)
|
||||
# TODO: Make this an error on Elixir v2.0 since it accidentally worked previously.
|
||||
# raise EEx.SyntaxError, message: message, file: state.file, line: line
|
||||
end
|
||||
|
||||
defp generate_buffer([{:end_expr, line, _, chars, _} | _], _buffer, [], state) do
|
||||
raise EEx.SyntaxError,
|
||||
message: "unexpected end of expression <%#{chars}%>",
|
||||
file: state.file,
|
||||
line: line
|
||||
end
|
||||
|
||||
defp generate_buffer([], buffer, [], state) do
|
||||
state.engine.handle_body(buffer)
|
||||
end
|
||||
|
||||
defp generate_buffer([], _buffer, _scope, state) do
|
||||
raise EEx.SyntaxError,
|
||||
message: "unexpected end of string, expected a closing '<% end %>'",
|
||||
file: state.file,
|
||||
line: state.line
|
||||
end
|
||||
|
||||
# Creates a placeholder and wrap it inside the expression block
|
||||
|
||||
defp wrap_expr(current, line, buffer, chars, state) do
|
||||
new_lines = List.duplicate(?\n, line - state.line)
|
||||
key = length(state.quoted)
|
||||
placeholder = '__EEX__(' ++ Integer.to_charlist(key) ++ ');'
|
||||
count = current ++ placeholder ++ new_lines ++ chars
|
||||
new_state = %{state | quoted: [{key, state.engine.handle_end(buffer)} | state.quoted]}
|
||||
|
||||
{count, new_state}
|
||||
end
|
||||
|
||||
# Look middle expressions that immediatelly follow a start_expr
|
||||
|
||||
defp look_ahead_middle(
|
||||
[{:text, text}, {:middle_expr, line, _, chars, _} | rest] = tokens,
|
||||
start,
|
||||
contents
|
||||
) do
|
||||
if only_spaces?(text) do
|
||||
{contents ++ text ++ chars, line, rest}
|
||||
else
|
||||
{contents, start, tokens}
|
||||
end
|
||||
end
|
||||
|
||||
defp look_ahead_middle([{:middle_expr, line, _, chars, _} | rest], _start, contents) do
|
||||
{contents ++ chars, line, rest}
|
||||
end
|
||||
|
||||
defp look_ahead_middle(tokens, start, contents) do
|
||||
{contents, start, tokens}
|
||||
end
|
||||
|
||||
defp only_spaces?(chars) do
|
||||
Enum.all?(chars, &(&1 in [?\s, ?\t, ?\r, ?\n]))
|
||||
end
|
||||
|
||||
# Changes placeholder to real expression
|
||||
|
||||
defp insert_quoted({:__EEX__, _, [key]}, quoted) do
|
||||
{^key, value} = List.keyfind(quoted, key, 0)
|
||||
value
|
||||
end
|
||||
|
||||
defp insert_quoted({left, line, right}, quoted) do
|
||||
{insert_quoted(left, quoted), line, insert_quoted(right, quoted)}
|
||||
end
|
||||
|
||||
defp insert_quoted({left, right}, quoted) do
|
||||
{insert_quoted(left, quoted), insert_quoted(right, quoted)}
|
||||
end
|
||||
|
||||
defp insert_quoted(list, quoted) when is_list(list) do
|
||||
Enum.map(list, &insert_quoted(&1, quoted))
|
||||
end
|
||||
|
||||
defp insert_quoted(other, _quoted) do
|
||||
other
|
||||
end
|
||||
end
|
||||
@@ -1,219 +0,0 @@
|
||||
defmodule EEx.Engine do
|
||||
@moduledoc ~S"""
|
||||
Basic EEx engine that ships with Elixir.
|
||||
|
||||
An engine needs to implement all callbacks below.
|
||||
|
||||
An engine may also `use EEx.Engine` to get the default behaviour
|
||||
but this is not advised. In such cases, if any of the callbacks
|
||||
are overridden, they must call `super()` to delegate to the
|
||||
underlying `EEx.Engine`.
|
||||
"""
|
||||
|
||||
@type state :: term
|
||||
|
||||
@doc """
|
||||
Called at the beginning of every template.
|
||||
|
||||
It must return the initial state.
|
||||
"""
|
||||
@callback init(opts :: keyword) :: state
|
||||
|
||||
@doc """
|
||||
Called at the end of every template.
|
||||
|
||||
It must return Elixir's quoted expressions for the template.
|
||||
"""
|
||||
@callback handle_body(state) :: Macro.t()
|
||||
|
||||
@doc """
|
||||
Called for the text/static parts of a template.
|
||||
|
||||
It must return the updated state.
|
||||
"""
|
||||
@callback handle_text(state, text :: String.t()) :: state
|
||||
|
||||
@doc """
|
||||
Called for the dynamic/code parts of a template.
|
||||
|
||||
The marker is what follows exactly after `<%`. For example,
|
||||
`<% foo %>` has an empty marker, but `<%= foo %>` has `"="`
|
||||
as marker. The allowed markers so far are:
|
||||
|
||||
* `""`
|
||||
* `"="`
|
||||
* `"/"`
|
||||
* `"|"`
|
||||
|
||||
Markers `"/"` and `"|"` are only for use in custom EEx engines
|
||||
and are not implemented by default. Using them without an
|
||||
appropriate implementation raises `EEx.SyntaxError`.
|
||||
|
||||
It must return the updated state.
|
||||
"""
|
||||
@callback handle_expr(state, marker :: String.t(), expr :: Macro.t()) :: state
|
||||
|
||||
@doc """
|
||||
Invoked at the beginning of every nesting.
|
||||
|
||||
It must return a new state that is used only inside the nesting.
|
||||
Once the nesting terminates, the current `state` is resumed.
|
||||
"""
|
||||
@callback handle_begin(state) :: state
|
||||
|
||||
@doc """
|
||||
Invokes at the end of a nesting.
|
||||
|
||||
It must return Elixir's quoted expressions for the nesting.
|
||||
"""
|
||||
@callback handle_end(state) :: Macro.t()
|
||||
|
||||
@doc false
|
||||
defmacro __using__(_) do
|
||||
quote do
|
||||
@behaviour EEx.Engine
|
||||
|
||||
def init(opts) do
|
||||
EEx.Engine.init(opts)
|
||||
end
|
||||
|
||||
def handle_body(state) do
|
||||
EEx.Engine.handle_body(state)
|
||||
end
|
||||
|
||||
def handle_begin(state) do
|
||||
EEx.Engine.handle_begin(state)
|
||||
end
|
||||
|
||||
def handle_end(state) do
|
||||
EEx.Engine.handle_end(state)
|
||||
end
|
||||
|
||||
def handle_text(state, text) do
|
||||
EEx.Engine.handle_text(state, text)
|
||||
end
|
||||
|
||||
def handle_expr(state, marker, expr) do
|
||||
EEx.Engine.handle_expr(state, marker, expr)
|
||||
end
|
||||
|
||||
defoverridable EEx.Engine
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Handles assigns in quoted expressions.
|
||||
|
||||
A warning will be printed on missing assigns.
|
||||
Future versions will raise.
|
||||
|
||||
This can be added to any custom engine by invoking
|
||||
`handle_assign/1` with `Macro.prewalk/2`:
|
||||
|
||||
def handle_expr(state, token, expr) do
|
||||
expr = Macro.prewalk(expr, &EEx.Engine.handle_assign/1)
|
||||
super(state, token, expr)
|
||||
end
|
||||
|
||||
"""
|
||||
@spec handle_assign(Macro.t()) :: Macro.t()
|
||||
def handle_assign({:@, meta, [{name, _, atom}]}) when is_atom(name) and is_atom(atom) do
|
||||
line = meta[:line] || 0
|
||||
quote(line: line, do: EEx.Engine.fetch_assign!(var!(assigns), unquote(name)))
|
||||
end
|
||||
|
||||
def handle_assign(arg) do
|
||||
arg
|
||||
end
|
||||
|
||||
@doc false
|
||||
# TODO: Raise on v2.0
|
||||
@spec fetch_assign!(Access.t(), Access.key()) :: term | nil
|
||||
def fetch_assign!(assigns, key) do
|
||||
case Access.fetch(assigns, key) do
|
||||
{:ok, val} ->
|
||||
val
|
||||
|
||||
:error ->
|
||||
keys = Enum.map(assigns, &elem(&1, 0))
|
||||
|
||||
IO.warn(
|
||||
"assign @#{key} not available in EEx template. " <>
|
||||
"Please ensure all assigns are given as options. " <>
|
||||
"Available assigns: #{inspect(keys)}"
|
||||
)
|
||||
|
||||
nil
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
def init(_opts) do
|
||||
%{
|
||||
binary: [],
|
||||
dynamic: [],
|
||||
vars_count: 0
|
||||
}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_begin(state) do
|
||||
check_state!(state)
|
||||
%{state | binary: [], dynamic: []}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_end(quoted) do
|
||||
handle_body(quoted)
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_body(state) do
|
||||
check_state!(state)
|
||||
%{binary: binary, dynamic: dynamic} = state
|
||||
binary = {:<<>>, [], Enum.reverse(binary)}
|
||||
dynamic = [binary | dynamic]
|
||||
{:__block__, [], Enum.reverse(dynamic)}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_text(state, text) do
|
||||
%{binary: binary} = state
|
||||
%{state | binary: [text | binary]}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_expr(state, "=", ast) do
|
||||
%{binary: binary, dynamic: dynamic, vars_count: vars_count} = state
|
||||
var = Macro.var(:"arg#{vars_count}", __MODULE__)
|
||||
|
||||
ast =
|
||||
quote do
|
||||
unquote(var) = String.Chars.to_string(unquote(ast))
|
||||
end
|
||||
|
||||
segment =
|
||||
quote do
|
||||
unquote(var) :: binary
|
||||
end
|
||||
|
||||
%{state | dynamic: [ast | dynamic], binary: [segment | binary], vars_count: vars_count + 1}
|
||||
end
|
||||
|
||||
def handle_expr(state, "", ast) do
|
||||
%{dynamic: dynamic} = state
|
||||
%{state | dynamic: [ast | dynamic]}
|
||||
end
|
||||
|
||||
def handle_expr(_state, marker, _ast) when marker in ["/", "|"] do
|
||||
raise EEx.SyntaxError,
|
||||
"unsupported EEx syntax <%#{marker} %> (the syntax is valid but not supported by the current EEx engine)"
|
||||
end
|
||||
|
||||
defp check_state!(%{binary: _, dynamic: _, vars_count: _}), do: :ok
|
||||
|
||||
defp check_state!(state) do
|
||||
raise "unexpected EEx.Engine state: #{inspect(state)}. " <>
|
||||
"This typically means a bug or an outdated EEx.Engine or tool"
|
||||
end
|
||||
end
|
||||
@@ -1,42 +0,0 @@
|
||||
defmodule EEx.SmartEngine do
|
||||
@moduledoc """
|
||||
The default engine used by EEx.
|
||||
|
||||
It includes assigns (like `@foo`) and possibly other
|
||||
conveniences in the future.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> EEx.eval_string("<%= @foo %>", assigns: [foo: 1])
|
||||
"1"
|
||||
|
||||
In the example above, we can access the value `foo` under
|
||||
the binding `assigns` using `@foo`. This is useful because
|
||||
a template, after being compiled, can receive different
|
||||
assigns and would not require recompilation for each
|
||||
variable set.
|
||||
|
||||
Assigns can also be used when compiled to a function:
|
||||
|
||||
# sample.eex
|
||||
<%= @a + @b %>
|
||||
|
||||
# sample.ex
|
||||
defmodule Sample do
|
||||
require EEx
|
||||
EEx.function_from_file(:def, :sample, "sample.eex", [:assigns])
|
||||
end
|
||||
|
||||
# iex
|
||||
Sample.sample(a: 1, b: 2)
|
||||
#=> "3"
|
||||
|
||||
"""
|
||||
|
||||
use EEx.Engine
|
||||
|
||||
def handle_expr(buffer, mark, expr) do
|
||||
expr = Macro.prewalk(expr, &EEx.Engine.handle_assign/1)
|
||||
super(buffer, mark, expr)
|
||||
end
|
||||
end
|
||||
@@ -1,242 +0,0 @@
|
||||
defmodule EEx.Tokenizer do
|
||||
@moduledoc false
|
||||
|
||||
@type content :: IO.chardata()
|
||||
@type line :: non_neg_integer
|
||||
@type marker :: '=' | '/' | '|' | ''
|
||||
@type trimmed? :: boolean
|
||||
@type token ::
|
||||
{:text, content}
|
||||
| {:expr | :start_expr | :middle_expr | :end_expr, line, marker, content, trimmed?}
|
||||
|
||||
@spaces [?\s, ?\t]
|
||||
@closing_brackets ')]}'
|
||||
|
||||
@doc """
|
||||
Tokenizes the given charlist or binary.
|
||||
|
||||
It returns {:ok, list} with the following tokens:
|
||||
|
||||
* `{:text, content}`
|
||||
* `{:expr, line, marker, content, trimmed?}`
|
||||
* `{:start_expr, line, marker, content, trimmed?}`
|
||||
* `{:middle_expr, line, marker, content, trimmed?}`
|
||||
* `{:end_expr, line, marker, content, trimmed?}`
|
||||
|
||||
Or `{:error, line, error}` in case of errors.
|
||||
"""
|
||||
@spec tokenize(binary | charlist, line, keyword) :: {:ok, [token]} | {:error, line, String.t()}
|
||||
def tokenize(bin, line, opts \\ [])
|
||||
|
||||
def tokenize(bin, line, opts)
|
||||
when is_binary(bin) and is_integer(line) and line >= 0 and is_list(opts) do
|
||||
tokenize(String.to_charlist(bin), line, opts)
|
||||
end
|
||||
|
||||
def tokenize(list, line, opts)
|
||||
when is_list(list) and is_integer(line) and line >= 0 and is_list(opts) do
|
||||
tokenize(list, line, opts, [], [])
|
||||
end
|
||||
|
||||
defp tokenize('<%%' ++ t, line, opts, buffer, acc) do
|
||||
tokenize(t, line, opts, [?%, ?< | buffer], acc)
|
||||
end
|
||||
|
||||
defp tokenize('<%#' ++ t, line, opts, buffer, acc) do
|
||||
case expr(t, line, []) do
|
||||
{:error, _, _} = error ->
|
||||
error
|
||||
|
||||
{:ok, _, new_line, rest} ->
|
||||
{_, rest, new_line, buffer} = trim_if_needed(rest, new_line, opts, buffer, acc)
|
||||
tokenize(rest, new_line, opts, buffer, acc)
|
||||
end
|
||||
end
|
||||
|
||||
defp tokenize('<%' ++ t, line, opts, buffer, acc) do
|
||||
{marker, t} = retrieve_marker(t)
|
||||
|
||||
case expr(t, line, []) do
|
||||
{:error, _, _} = error ->
|
||||
error
|
||||
|
||||
{:ok, expr, new_line, rest} ->
|
||||
token = token_name(expr)
|
||||
{trimmed?, rest, new_line, buffer} = trim_if_needed(rest, new_line, opts, buffer, acc)
|
||||
acc = tokenize_text(buffer, acc)
|
||||
final = {token, line, marker, Enum.reverse(expr), trimmed?}
|
||||
tokenize(rest, new_line, opts, [], [final | acc])
|
||||
end
|
||||
end
|
||||
|
||||
defp tokenize('\n' ++ t, line, opts, buffer, acc) do
|
||||
tokenize(t, line + 1, opts, [?\n | buffer], acc)
|
||||
end
|
||||
|
||||
defp tokenize([h | t], line, opts, buffer, acc) do
|
||||
tokenize(t, line, opts, [h | buffer], acc)
|
||||
end
|
||||
|
||||
defp tokenize([], _line, _opts, buffer, acc) do
|
||||
{:ok, Enum.reverse(tokenize_text(buffer, acc))}
|
||||
end
|
||||
|
||||
# Retrieve marker for <%
|
||||
|
||||
defp retrieve_marker([marker | t]) when marker in [?=, ?/, ?|] do
|
||||
{[marker], t}
|
||||
end
|
||||
|
||||
defp retrieve_marker(t) do
|
||||
{'', t}
|
||||
end
|
||||
|
||||
# Tokenize an expression until we find %>
|
||||
|
||||
defp expr([?%, ?> | t], line, buffer) do
|
||||
{:ok, buffer, line, t}
|
||||
end
|
||||
|
||||
defp expr('\n' ++ t, line, buffer) do
|
||||
expr(t, line + 1, [?\n | buffer])
|
||||
end
|
||||
|
||||
defp expr([h | t], line, buffer) do
|
||||
expr(t, line, [h | buffer])
|
||||
end
|
||||
|
||||
defp expr([], line, _buffer) do
|
||||
{:error, line, "missing token '%>'"}
|
||||
end
|
||||
|
||||
# Receive an expression content and check
|
||||
# if it is a start, middle or an end token.
|
||||
#
|
||||
# Start tokens finish with "do" and "fn ->"
|
||||
# Middle tokens are marked with "->" or keywords
|
||||
# End tokens contain only the end word and optionally
|
||||
# combinations of ")", "]" and "}".
|
||||
|
||||
defp token_name([h | t]) when h in @spaces do
|
||||
token_name(t)
|
||||
end
|
||||
|
||||
defp token_name('od' ++ [h | rest]) when h in @spaces or h in @closing_brackets do
|
||||
case tokenize_rest(rest) do
|
||||
{:ok, [{:end, _} | _]} -> :middle_expr
|
||||
_ -> :start_expr
|
||||
end
|
||||
end
|
||||
|
||||
defp token_name('>-' ++ rest) do
|
||||
case tokenize_rest(rest) do
|
||||
{:ok, [{:end, _} | _]} ->
|
||||
:middle_expr
|
||||
|
||||
# Check if there is a "fn" token and, if so, it is not
|
||||
# followed by an "end" token. If this is the case, we
|
||||
# are on a start expr.
|
||||
{:ok, tokens} ->
|
||||
tokens = Enum.reverse(tokens)
|
||||
fn_index = fn_index(tokens)
|
||||
|
||||
if fn_index && end_index(tokens) > fn_index do
|
||||
:start_expr
|
||||
else
|
||||
:middle_expr
|
||||
end
|
||||
|
||||
_error ->
|
||||
:middle_expr
|
||||
end
|
||||
end
|
||||
|
||||
defp token_name('esle' ++ t), do: check_spaces(t, :middle_expr)
|
||||
defp token_name('retfa' ++ t), do: check_spaces(t, :middle_expr)
|
||||
defp token_name('hctac' ++ t), do: check_spaces(t, :middle_expr)
|
||||
defp token_name('eucser' ++ t), do: check_spaces(t, :middle_expr)
|
||||
|
||||
defp token_name(rest) do
|
||||
case Enum.drop_while(rest, &(&1 in @spaces or &1 in @closing_brackets)) do
|
||||
'dne' ++ t -> check_spaces(t, :end_expr)
|
||||
_ -> :expr
|
||||
end
|
||||
end
|
||||
|
||||
# Tokenize the remaining passing check_terminators as false,
|
||||
# which relax the tokenizer to not error on unmatched pairs.
|
||||
# If the tokens start with an "end" we have a middle expr.
|
||||
defp tokenize_rest(rest) do
|
||||
:elixir_tokenizer.tokenize(Enum.reverse(rest), 1, file: "eex", check_terminators: false)
|
||||
end
|
||||
|
||||
defp fn_index(tokens) do
|
||||
Enum.find_index(tokens, fn
|
||||
{:fn_paren, _} -> true
|
||||
{:fn, _} -> true
|
||||
_ -> false
|
||||
end)
|
||||
end
|
||||
|
||||
defp end_index(tokens) do
|
||||
Enum.find_index(tokens, &match?({:end, _}, &1)) || :infinity
|
||||
end
|
||||
|
||||
defp check_spaces(string, token) do
|
||||
if Enum.all?(string, &(&1 in @spaces)) do
|
||||
token
|
||||
else
|
||||
:expr
|
||||
end
|
||||
end
|
||||
|
||||
# Tokenize the buffered text by appending
|
||||
# it to the given accumulator.
|
||||
|
||||
defp tokenize_text([], acc) do
|
||||
acc
|
||||
end
|
||||
|
||||
defp tokenize_text(buffer, acc) do
|
||||
[{:text, Enum.reverse(buffer)} | acc]
|
||||
end
|
||||
|
||||
# If trim mode is enabled and the token is on a line with
|
||||
# only itself and whitespace, trim the whitespace around it,
|
||||
# including the line break following it if there is one.
|
||||
defp trim_if_needed(rest, line, opts, buffer, acc) do
|
||||
with true <- opts[:trim],
|
||||
{true, new_buffer} <- trim_left(buffer, acc),
|
||||
{true, new_rest, new_line} <- trim_right(rest, line) do
|
||||
{true, new_rest, new_line, new_buffer}
|
||||
else
|
||||
_ -> {false, rest, line, buffer}
|
||||
end
|
||||
end
|
||||
|
||||
defp trim_left(buffer, acc) do
|
||||
case {trim_whitespace(buffer), acc} do
|
||||
{[?\n | _] = trimmed_buffer, _} -> {true, trimmed_buffer}
|
||||
{[], [{_, _, _, _, true} | _]} -> {true, []}
|
||||
{[], []} -> {true, []}
|
||||
_ -> {false, buffer}
|
||||
end
|
||||
end
|
||||
|
||||
defp trim_right(rest, line) do
|
||||
case trim_whitespace(rest) do
|
||||
[?\r, ?\n | trimmed_rest] -> {true, trimmed_rest, line + 1}
|
||||
[?\n | trimmed_rest] -> {true, trimmed_rest, line + 1}
|
||||
[] -> {true, [], line}
|
||||
_ -> {false, rest, line}
|
||||
end
|
||||
end
|
||||
|
||||
defp trim_whitespace([h | t]) when h in @spaces do
|
||||
trim_whitespace(t)
|
||||
end
|
||||
|
||||
defp trim_whitespace(list) do
|
||||
list
|
||||
end
|
||||
end
|
||||
@@ -1,11 +0,0 @@
|
||||
defmodule EEx.MixProject do
|
||||
use Mix.Project
|
||||
|
||||
def project do
|
||||
[
|
||||
app: :eex,
|
||||
version: System.version(),
|
||||
build_per_environment: false
|
||||
]
|
||||
end
|
||||
end
|
||||
@@ -1,51 +0,0 @@
|
||||
Code.require_file("../test_helper.exs", __DIR__)
|
||||
|
||||
defmodule EEx.SmartEngineTest do
|
||||
# TODO: Make this async: true once capture_io is removed
|
||||
use ExUnit.Case
|
||||
|
||||
test "evaluates simple string" do
|
||||
assert_eval("foo bar", "foo bar")
|
||||
end
|
||||
|
||||
test "evaluates with assigns as keywords" do
|
||||
assert_eval("1", "<%= @foo %>", assigns: [foo: 1])
|
||||
end
|
||||
|
||||
test "evaluates with assigns as a map" do
|
||||
assert_eval("1", "<%= @foo %>", assigns: %{foo: 1})
|
||||
end
|
||||
|
||||
test "error with missing assigns" do
|
||||
stderr =
|
||||
ExUnit.CaptureIO.capture_io(:stderr, fn ->
|
||||
assert_eval("", "<%= @foo %>", assigns: %{})
|
||||
end)
|
||||
|
||||
assert stderr =~ "assign @foo not available in EEx template"
|
||||
end
|
||||
|
||||
test "evaluates with loops" do
|
||||
assert_eval("1\n2\n3\n", "<%= for x <- [1, 2, 3] do %><%= x %>\n<% end %>")
|
||||
end
|
||||
|
||||
test "preserves line numbers in assignments" do
|
||||
result = EEx.compile_string("foo\n<%= @hello %>", engine: EEx.SmartEngine)
|
||||
|
||||
Macro.prewalk(result, fn
|
||||
{_left, meta, [_, :hello]} ->
|
||||
assert Keyword.get(meta, :line) == 2
|
||||
send(self(), :found)
|
||||
|
||||
node ->
|
||||
node
|
||||
end)
|
||||
|
||||
assert_received :found
|
||||
end
|
||||
|
||||
defp assert_eval(expected, actual, binding \\ []) do
|
||||
result = EEx.eval_string(actual, binding, file: __ENV__.file, engine: EEx.SmartEngine)
|
||||
assert result == expected
|
||||
end
|
||||
end
|
||||
@@ -1,222 +0,0 @@
|
||||
Code.require_file("../test_helper.exs", __DIR__)
|
||||
|
||||
defmodule EEx.TokenizerTest do
|
||||
use ExUnit.Case, async: true
|
||||
require EEx.Tokenizer, as: T
|
||||
|
||||
test "simple chars lists" do
|
||||
assert T.tokenize('foo', 1) == {:ok, [{:text, 'foo'}]}
|
||||
end
|
||||
|
||||
test "simple strings" do
|
||||
assert T.tokenize("foo", 1) == {:ok, [{:text, 'foo'}]}
|
||||
end
|
||||
|
||||
test "strings with embedded code" do
|
||||
assert T.tokenize('foo <% bar %>', 1) ==
|
||||
{:ok, [{:text, 'foo '}, {:expr, 1, '', ' bar ', false}]}
|
||||
end
|
||||
|
||||
test "strings with embedded equals code" do
|
||||
assert T.tokenize('foo <%= bar %>', 1) ==
|
||||
{:ok, [{:text, 'foo '}, {:expr, 1, '=', ' bar ', false}]}
|
||||
end
|
||||
|
||||
test "strings with embedded slash code" do
|
||||
assert T.tokenize('foo <%/ bar %>', 1) ==
|
||||
{:ok, [{:text, 'foo '}, {:expr, 1, '/', ' bar ', false}]}
|
||||
end
|
||||
|
||||
test "strings with embedded pipe code" do
|
||||
assert T.tokenize('foo <%| bar %>', 1) ==
|
||||
{:ok, [{:text, 'foo '}, {:expr, 1, '|', ' bar ', false}]}
|
||||
end
|
||||
|
||||
test "strings with more than one line" do
|
||||
assert T.tokenize('foo\n<%= bar %>', 1) ==
|
||||
{:ok, [{:text, 'foo\n'}, {:expr, 2, '=', ' bar ', false}]}
|
||||
end
|
||||
|
||||
test "strings with more than one line and expression with more than one line" do
|
||||
string = '''
|
||||
foo <%= bar
|
||||
|
||||
baz %>
|
||||
<% foo %>
|
||||
'''
|
||||
|
||||
exprs = [
|
||||
{:text, 'foo '},
|
||||
{:expr, 1, '=', ' bar\n\nbaz ', false},
|
||||
{:text, '\n'},
|
||||
{:expr, 4, '', ' foo ', false},
|
||||
{:text, '\n'}
|
||||
]
|
||||
|
||||
assert T.tokenize(string, 1) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "quotation" do
|
||||
assert T.tokenize('foo <%% true %>', 1) == {:ok, [{:text, 'foo <% true %>'}]}
|
||||
end
|
||||
|
||||
test "quotation with do/end" do
|
||||
assert T.tokenize('foo <%% true do %>bar<%% end %>', 1) ==
|
||||
{:ok, [{:text, 'foo <% true do %>bar<% end %>'}]}
|
||||
end
|
||||
|
||||
test "quotation with interpolation" do
|
||||
exprs = [
|
||||
{:text, 'a <% b '},
|
||||
{:expr, 1, '=', ' c ', false},
|
||||
{:text, ' '},
|
||||
{:expr, 1, '=', ' d ', false},
|
||||
{:text, ' e %> f'}
|
||||
]
|
||||
|
||||
assert T.tokenize('a <%% b <%= c %> <%= d %> e %> f', 1) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "improperly formatted quotation with interpolation" do
|
||||
exprs = [
|
||||
{:text, '<%% a <%= b %> c %>'}
|
||||
]
|
||||
|
||||
assert T.tokenize('<%%% a <%%= b %> c %>', 1) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "comments" do
|
||||
exprs = [
|
||||
{:text, 'foo '}
|
||||
]
|
||||
|
||||
assert T.tokenize('foo <%# true %>', 1) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "comments with do/end" do
|
||||
exprs = [
|
||||
{:text, 'foo bar'}
|
||||
]
|
||||
|
||||
assert T.tokenize('foo <%# true do %>bar<%# end %>', 1) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "strings with embedded do end" do
|
||||
exprs = [
|
||||
{:text, 'foo '},
|
||||
{:start_expr, 1, '', ' if true do ', false},
|
||||
{:text, 'bar'},
|
||||
{:end_expr, 1, '', ' end ', false}
|
||||
]
|
||||
|
||||
assert T.tokenize('foo <% if true do %>bar<% end %>', 1) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "strings with embedded -> end" do
|
||||
exprs = [
|
||||
{:text, 'foo '},
|
||||
{:start_expr, 1, '', ' cond do ', false},
|
||||
{:middle_expr, 1, '', ' false -> ', false},
|
||||
{:text, 'bar'},
|
||||
{:middle_expr, 1, '', ' true -> ', false},
|
||||
{:text, 'baz'},
|
||||
{:end_expr, 1, '', ' end ', false}
|
||||
]
|
||||
|
||||
assert T.tokenize('foo <% cond do %><% false -> %>bar<% true -> %>baz<% end %>', 1) ==
|
||||
{:ok, exprs}
|
||||
end
|
||||
|
||||
test "strings with multiple callbacks" do
|
||||
exprs = [
|
||||
{:start_expr, 1, '=', ' a fn -> ', false},
|
||||
{:text, 'foo'},
|
||||
{:middle_expr, 1, '', ' end, fn -> ', false},
|
||||
{:text, 'bar'},
|
||||
{:end_expr, 1, '', ' end ', false}
|
||||
]
|
||||
|
||||
assert T.tokenize('<%= a fn -> %>foo<% end, fn -> %>bar<% end %>', 1) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "strings with callback followed by do block" do
|
||||
exprs = [
|
||||
{:start_expr, 1, '=', ' a fn -> ', false},
|
||||
{:text, 'foo'},
|
||||
{:middle_expr, 1, '', ' end do ', false},
|
||||
{:text, 'bar'},
|
||||
{:end_expr, 1, '', ' end ', false}
|
||||
]
|
||||
|
||||
assert T.tokenize('<%= a fn -> %>foo<% end do %>bar<% end %>', 1) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "strings with embedded keywords blocks" do
|
||||
exprs = [
|
||||
{:text, 'foo '},
|
||||
{:start_expr, 1, '', ' if true do ', false},
|
||||
{:text, 'bar'},
|
||||
{:middle_expr, 1, '', ' else ', false},
|
||||
{:text, 'baz'},
|
||||
{:end_expr, 1, '', ' end ', false}
|
||||
]
|
||||
|
||||
assert T.tokenize('foo <% if true do %>bar<% else %>baz<% end %>', 1) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "trim mode" do
|
||||
template = '\t<%= if true do %> \n TRUE \n <% else %>\n FALSE \n <% end %> '
|
||||
|
||||
exprs = [
|
||||
{:start_expr, 1, '=', ' if true do ', true},
|
||||
{:text, ' TRUE \n'},
|
||||
{:middle_expr, 3, '', ' else ', true},
|
||||
{:text, ' FALSE \n'},
|
||||
{:end_expr, 5, '', ' end ', true}
|
||||
]
|
||||
|
||||
assert T.tokenize(template, 1, trim: true) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "trim mode with comment" do
|
||||
exprs = [
|
||||
{:text, '123'}
|
||||
]
|
||||
|
||||
assert T.tokenize(' <%# comment %> \n123', 1, trim: true) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "trim mode with CRLF" do
|
||||
exprs = [
|
||||
{:text, '0\r\n'},
|
||||
{:expr, 2, '=', ' 12 ', true},
|
||||
{:text, '34'}
|
||||
]
|
||||
|
||||
assert T.tokenize('0\r\n <%= 12 %> \r\n34', 1, trim: true) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "trim mode set to false" do
|
||||
exprs = [
|
||||
{:text, ' '},
|
||||
{:expr, 1, '=', ' 12 ', false},
|
||||
{:text, ' \n'}
|
||||
]
|
||||
|
||||
assert T.tokenize(' <%= 12 %> \n', 1, trim: false) == {:ok, exprs}
|
||||
end
|
||||
|
||||
test "trim mode no false positives" do
|
||||
assert_not_trimmed = fn x -> assert T.tokenize(x, 1, trim: true) == T.tokenize(x, 1) end
|
||||
|
||||
assert_not_trimmed.('foo <%= "bar" %> ')
|
||||
assert_not_trimmed.('\n <%= "foo" %>bar')
|
||||
assert_not_trimmed.(' <%% hello %> ')
|
||||
assert_not_trimmed.(' <%= 01 %><%= 23 %>\n')
|
||||
end
|
||||
|
||||
test "raise syntax error when there is start mark and no end mark" do
|
||||
assert T.tokenize('foo <% :bar', 1) == {:error, 1, "missing token '%>'"}
|
||||
assert T.tokenize('<%# true ', 1) == {:error, 1, "missing token '%>'"}
|
||||
end
|
||||
end
|
||||
@@ -1,651 +0,0 @@
|
||||
Code.require_file("test_helper.exs", __DIR__)
|
||||
|
||||
require EEx
|
||||
|
||||
defmodule EExTest.Compiled do
|
||||
def before_compile do
|
||||
{__ENV__.line, hd(tl(get_stacktrace()))}
|
||||
end
|
||||
|
||||
EEx.function_from_string(:def, :string_sample, "<%= a + b %>", [:a, :b])
|
||||
|
||||
filename = Path.join(__DIR__, "fixtures/eex_template_with_bindings.eex")
|
||||
EEx.function_from_file(:defp, :private_file_sample, filename, [:bar])
|
||||
|
||||
filename = Path.join(__DIR__, "fixtures/eex_template_with_bindings.eex")
|
||||
EEx.function_from_file(:def, :public_file_sample, filename, [:bar])
|
||||
|
||||
def file_sample(arg), do: private_file_sample(arg)
|
||||
|
||||
def after_compile do
|
||||
{__ENV__.line, hd(tl(get_stacktrace()))}
|
||||
end
|
||||
|
||||
@file "unknown"
|
||||
def unknown do
|
||||
{__ENV__.line, hd(tl(get_stacktrace()))}
|
||||
end
|
||||
|
||||
defp get_stacktrace do
|
||||
try do
|
||||
:erlang.error("failed")
|
||||
rescue
|
||||
_ -> __STACKTRACE__
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defmodule Clause do
|
||||
defmacro defclause(expr, block) do
|
||||
quote do
|
||||
def unquote(expr), unquote(block)
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defmodule EExTest do
|
||||
use ExUnit.Case, async: true
|
||||
|
||||
doctest EEx
|
||||
doctest EEx.Engine
|
||||
doctest EEx.SmartEngine
|
||||
|
||||
describe "evaluates" do
|
||||
test "simple string" do
|
||||
assert_eval("foo bar", "foo bar")
|
||||
end
|
||||
|
||||
test "Unicode" do
|
||||
template = """
|
||||
• <%= "•" %> •
|
||||
<%= "Jößé Vâlìm" %> Jößé Vâlìm
|
||||
"""
|
||||
|
||||
assert_eval(" • • •\n Jößé Vâlìm Jößé Vâlìm\n", template)
|
||||
end
|
||||
|
||||
test "trim mode" do
|
||||
string = "<%= 123 %> \n456\n <%= 789 %>"
|
||||
expected = "123456\n789"
|
||||
assert_eval(expected, string, [], trim: true)
|
||||
end
|
||||
|
||||
test "trim mode with middle expression" do
|
||||
string = """
|
||||
<%= cond do %>
|
||||
<% false -> %>
|
||||
this
|
||||
<% true -> %>
|
||||
that
|
||||
<% end %>
|
||||
"""
|
||||
|
||||
expected = " that\n"
|
||||
assert_eval(expected, string, [], trim: true)
|
||||
end
|
||||
|
||||
test "trim mode with multiple lines" do
|
||||
string = """
|
||||
<%= "First line" %>
|
||||
<%= "Second line" %>
|
||||
<%= "Third line" %>
|
||||
<%= "Fourth line" %>
|
||||
"""
|
||||
|
||||
expected = "First lineSecond lineThird lineFourth line"
|
||||
assert_eval(expected, string, [], trim: true)
|
||||
end
|
||||
|
||||
test "embedded code" do
|
||||
assert_eval("foo bar", "foo <%= :bar %>")
|
||||
end
|
||||
|
||||
test "embedded code with binding" do
|
||||
assert EEx.eval_string("foo <%= bar %>", bar: 1) == "foo 1"
|
||||
end
|
||||
|
||||
test "embedded code with do end when true" do
|
||||
assert_eval("foo bar", "foo <%= if true do %>bar<% end %>")
|
||||
end
|
||||
|
||||
test "embedded code with do end when false" do
|
||||
assert_eval("foo ", "foo <%= if false do %>bar<% end %>")
|
||||
end
|
||||
|
||||
test "embedded code with do preceeded by bracket" do
|
||||
assert_eval("foo bar", "foo <%= if {true}do %>bar<% end %>")
|
||||
assert_eval("foo bar", "foo <%= if (true)do %>bar<% end %>")
|
||||
assert_eval("foo bar", "foo <%= if [true]do %>bar<% end %>")
|
||||
end
|
||||
|
||||
test "embedded code with do end and expression" do
|
||||
assert_eval("foo bar", "foo <%= if true do %><%= :bar %><% end %>")
|
||||
end
|
||||
|
||||
test "embedded code with do end and multiple expressions" do
|
||||
assert_eval(
|
||||
"foo bar baz",
|
||||
"foo <%= if true do %>bar <% Process.put(:eex_text, 1) %><%= :baz %><% end %>"
|
||||
)
|
||||
|
||||
assert Process.get(:eex_text) == 1
|
||||
end
|
||||
|
||||
test "embedded code with middle expression" do
|
||||
assert_eval("foo bar", "foo <%= if true do %>bar<% else %>baz<% end %>")
|
||||
end
|
||||
|
||||
test "embedded code with evaluated middle expression" do
|
||||
assert_eval("foo baz", "foo <%= if false do %>bar<% else %>baz<% end %>")
|
||||
end
|
||||
|
||||
test "embedded code with nested do end" do
|
||||
assert_eval("foo bar", "foo <%= if true do %><%= if true do %>bar<% end %><% end %>")
|
||||
end
|
||||
|
||||
test "embedded code with nested do end with middle expression" do
|
||||
assert_eval(
|
||||
"foo baz",
|
||||
"foo <%= if true do %><%= if false do %>bar<% else %>baz<% end %><% end %>"
|
||||
)
|
||||
end
|
||||
|
||||
test "embedded code with end followed by bracket" do
|
||||
assert_eval(
|
||||
" 101 102 103 ",
|
||||
"<%= Enum.map([1, 2, 3], fn x -> %> <%= 100 + x %> <% end) %>"
|
||||
)
|
||||
|
||||
assert_eval(
|
||||
" 101 102 103 ",
|
||||
"<%= apply Enum, :map, [[1, 2, 3], fn x -> %> <%= 100 + x %> <% end] %>"
|
||||
)
|
||||
|
||||
assert_eval(
|
||||
" 101 102 103 ",
|
||||
"<%= #{__MODULE__}.tuple_map {[1, 2, 3], fn x -> %> <%= 100 + x %> <% end} %>"
|
||||
)
|
||||
|
||||
assert_eval(
|
||||
" 101 102 103 ",
|
||||
"<%= apply(Enum, :map, [[1, 2, 3], fn x -> %> <%= 100 + x %> <% end]) %>"
|
||||
)
|
||||
|
||||
assert_eval(
|
||||
" 101 102 103 ",
|
||||
"<%= Enum.map([1, 2, 3], (fn x -> %> <%= 100 + x %> <% end) ) %>"
|
||||
)
|
||||
end
|
||||
|
||||
test "embedded code with variable definition" do
|
||||
assert_eval("foo 1", "foo <% bar = 1 %><%= bar %>")
|
||||
end
|
||||
|
||||
test "embedded code with require" do
|
||||
assert_eval("foo 1,2,3", "foo <% require Enum, as: E %><%= E.join [1, 2, 3], \",\" %>")
|
||||
end
|
||||
|
||||
test "with end of token" do
|
||||
assert_eval("foo bar %>", "foo bar %>")
|
||||
end
|
||||
end
|
||||
|
||||
describe "raises syntax errors" do
|
||||
test "when the token is invalid" do
|
||||
assert_raise EEx.SyntaxError, "nofile:1: missing token '%>'", fn ->
|
||||
EEx.compile_string("foo <%= bar")
|
||||
end
|
||||
end
|
||||
|
||||
test "when middle expression is found without a start expression" do
|
||||
assert_raise EEx.SyntaxError, "nofile:1: unexpected middle of expression <% else %>", fn ->
|
||||
EEx.compile_string("<% if true %> foo<% else %>bar<% end %>")
|
||||
end
|
||||
end
|
||||
|
||||
test "when end expression is found without a start expression" do
|
||||
assert_raise EEx.SyntaxError, "nofile:1: unexpected end of expression <% end %>", fn ->
|
||||
EEx.compile_string("foo <% end %>")
|
||||
end
|
||||
end
|
||||
|
||||
test "when start expression is found without an end expression" do
|
||||
msg = "nofile:2: unexpected end of string, expected a closing '<% end %>'"
|
||||
|
||||
assert_raise EEx.SyntaxError, msg, fn ->
|
||||
EEx.compile_string("foo\n<% if true do %>")
|
||||
end
|
||||
end
|
||||
|
||||
test "when nested end expression is found without a start expression" do
|
||||
assert_raise EEx.SyntaxError, "nofile:1: unexpected end of expression <% end %>", fn ->
|
||||
EEx.compile_string("foo <% if true do %><% end %><% end %>")
|
||||
end
|
||||
end
|
||||
|
||||
test "when middle expression has a modifier" do
|
||||
assert ExUnit.CaptureIO.capture_io(:stderr, fn ->
|
||||
EEx.compile_string("foo <%= if true do %>true<%= else %>false<% end %>")
|
||||
end) =~ ~s[unexpected beginning of EEx tag \"<%=\" on \"<%= else %>\"]
|
||||
end
|
||||
|
||||
test "when end expression has a modifier" do
|
||||
assert ExUnit.CaptureIO.capture_io(:stderr, fn ->
|
||||
EEx.compile_string("foo <%= if true do %>true<% else %>false<%= end %>")
|
||||
end) =~
|
||||
~s[unexpected beginning of EEx tag \"<%=\" on end of expression \"<%= end %>\"]
|
||||
end
|
||||
|
||||
test "when trying to use marker '/' without implementation" do
|
||||
msg =
|
||||
~r/unsupported EEx syntax <%\/ %> \(the syntax is valid but not supported by the current EEx engine\)/
|
||||
|
||||
assert_raise EEx.SyntaxError, msg, fn ->
|
||||
EEx.compile_string("<%/ true %>")
|
||||
end
|
||||
end
|
||||
|
||||
test "when trying to use marker '|' without implementation" do
|
||||
msg =
|
||||
~r/unsupported EEx syntax <%| %> \(the syntax is valid but not supported by the current EEx engine\)/
|
||||
|
||||
assert_raise EEx.SyntaxError, msg, fn ->
|
||||
EEx.compile_string("<%| true %>")
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
describe "error messages" do
|
||||
test "honor line numbers" do
|
||||
assert_raise EEx.SyntaxError, "nofile:99: missing token '%>'", fn ->
|
||||
EEx.compile_string("foo <%= bar", line: 99)
|
||||
end
|
||||
end
|
||||
|
||||
test "honor file names" do
|
||||
assert_raise EEx.SyntaxError, "my_file.eex:1: missing token '%>'", fn ->
|
||||
EEx.compile_string("foo <%= bar", file: "my_file.eex")
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
describe "environment" do
|
||||
test "respects line numbers" do
|
||||
expected = """
|
||||
foo
|
||||
2
|
||||
"""
|
||||
|
||||
string = """
|
||||
foo
|
||||
<%= __ENV__.line %>
|
||||
"""
|
||||
|
||||
assert_eval(expected, string)
|
||||
end
|
||||
|
||||
test "respects line numbers inside nested expressions" do
|
||||
expected = """
|
||||
foo
|
||||
|
||||
3
|
||||
|
||||
5
|
||||
"""
|
||||
|
||||
string = """
|
||||
foo
|
||||
<%= if true do %>
|
||||
<%= __ENV__.line %>
|
||||
<% end %>
|
||||
<%= __ENV__.line %>
|
||||
"""
|
||||
|
||||
assert_eval(expected, string)
|
||||
end
|
||||
|
||||
test "respects line numbers inside start expression" do
|
||||
expected = """
|
||||
foo
|
||||
|
||||
true
|
||||
|
||||
5
|
||||
"""
|
||||
|
||||
string = """
|
||||
foo
|
||||
<%= if __ENV__.line == 2 do %>
|
||||
<%= true %>
|
||||
<% end %>
|
||||
<%= __ENV__.line %>
|
||||
"""
|
||||
|
||||
assert_eval(expected, string)
|
||||
end
|
||||
|
||||
test "respects line numbers inside middle expression with ->" do
|
||||
expected = """
|
||||
foo
|
||||
|
||||
true
|
||||
|
||||
7
|
||||
"""
|
||||
|
||||
string = """
|
||||
foo
|
||||
<%= cond do %>
|
||||
<% false -> %> false
|
||||
<% __ENV__.line == 4 -> %>
|
||||
<%= true %>
|
||||
<% end %>
|
||||
<%= __ENV__.line %>
|
||||
"""
|
||||
|
||||
assert_eval(expected, string)
|
||||
end
|
||||
|
||||
test "respects line number inside middle expressions with keywords" do
|
||||
expected = """
|
||||
foo
|
||||
|
||||
5
|
||||
|
||||
7
|
||||
"""
|
||||
|
||||
string = """
|
||||
foo
|
||||
<%= if false do %>
|
||||
<%= __ENV__.line %>
|
||||
<% else %>
|
||||
<%= __ENV__.line %>
|
||||
<% end %>
|
||||
<%= __ENV__.line %>
|
||||
"""
|
||||
|
||||
assert_eval(expected, string)
|
||||
end
|
||||
|
||||
test "respects files" do
|
||||
assert_eval("sample.ex", "<%= __ENV__.file %>", [], file: "sample.ex")
|
||||
end
|
||||
end
|
||||
|
||||
describe "clauses" do
|
||||
test "inside functions" do
|
||||
expected = """
|
||||
|
||||
Number 1
|
||||
|
||||
Number 2
|
||||
|
||||
Number 3
|
||||
|
||||
"""
|
||||
|
||||
string = """
|
||||
<%= Enum.map [1, 2, 3], fn x -> %>
|
||||
Number <%= x %>
|
||||
<% end %>
|
||||
"""
|
||||
|
||||
assert_eval(expected, string)
|
||||
end
|
||||
|
||||
test "inside multiple functions" do
|
||||
expected = """
|
||||
|
||||
A 1
|
||||
|
||||
B 2
|
||||
|
||||
A 3
|
||||
|
||||
"""
|
||||
|
||||
string = """
|
||||
<%= #{__MODULE__}.switching_map [1, 2, 3], fn x -> %>
|
||||
A <%= x %>
|
||||
<% end, fn x -> %>
|
||||
B <%= x %>
|
||||
<% end %>
|
||||
"""
|
||||
|
||||
assert_eval(expected, string)
|
||||
end
|
||||
|
||||
test "inside callback and do block" do
|
||||
expected = """
|
||||
|
||||
|
||||
A 1
|
||||
|
||||
B 2
|
||||
|
||||
A 3
|
||||
|
||||
"""
|
||||
|
||||
string = """
|
||||
<% require #{__MODULE__} %>
|
||||
<%= #{__MODULE__}.switching_macro [1, 2, 3], fn x -> %>
|
||||
A <%= x %>
|
||||
<% end do %>
|
||||
B <%= x %>
|
||||
<% end %>
|
||||
"""
|
||||
|
||||
assert_eval(expected, string)
|
||||
end
|
||||
|
||||
test "inside cond" do
|
||||
expected = """
|
||||
foo
|
||||
|
||||
true
|
||||
|
||||
"""
|
||||
|
||||
string = """
|
||||
foo
|
||||
<%= cond do %>
|
||||
<% false -> %> false
|
||||
<% fn -> 1 end -> %>
|
||||
<%= true %>
|
||||
<% end %>
|
||||
"""
|
||||
|
||||
assert_eval(expected, string)
|
||||
end
|
||||
|
||||
test "inside cond with do end" do
|
||||
string = """
|
||||
<% y = ["a", "b", "c"] %>
|
||||
<%= cond do %>
|
||||
<% "a" in y -> %>
|
||||
Good
|
||||
<% true -> %>
|
||||
<% if true do %>true<% else %>false<% end %>
|
||||
Bad
|
||||
<% end %>
|
||||
"""
|
||||
|
||||
assert_eval("\n\n Good\n \n", string)
|
||||
end
|
||||
end
|
||||
|
||||
describe "buffers" do
|
||||
test "unused buffers are kept out" do
|
||||
string = """
|
||||
<%= 123 %>
|
||||
<% if true do %>
|
||||
<%= 456 %>
|
||||
<% end %>
|
||||
<%= 789 %>
|
||||
"""
|
||||
|
||||
assert_eval("123\n\n789\n", string)
|
||||
end
|
||||
|
||||
test "inside comprehensions" do
|
||||
string = """
|
||||
<%= for _name <- packages || [] do %>
|
||||
<% end %>
|
||||
<%= all || :done %>
|
||||
"""
|
||||
|
||||
assert_eval("\ndone\n", string, packages: nil, all: nil)
|
||||
end
|
||||
end
|
||||
|
||||
describe "from file" do
|
||||
test "evaluates the source" do
|
||||
filename = Path.join(__DIR__, "fixtures/eex_template.eex")
|
||||
result = EEx.eval_file(filename)
|
||||
assert_normalized_newline_equal("foo bar.\n", result)
|
||||
end
|
||||
|
||||
test "evaluates the source with bindings" do
|
||||
filename = Path.join(__DIR__, "fixtures/eex_template_with_bindings.eex")
|
||||
result = EEx.eval_file(filename, bar: 1)
|
||||
assert_normalized_newline_equal("foo 1\n", result)
|
||||
end
|
||||
|
||||
test "raises an Exception when file is missing" do
|
||||
msg = "could not read file \"non-existent.eex\": no such file or directory"
|
||||
|
||||
assert_raise File.Error, msg, fn ->
|
||||
filename = "non-existent.eex"
|
||||
EEx.compile_file(filename)
|
||||
end
|
||||
end
|
||||
|
||||
test "sets external resource attribute" do
|
||||
assert EExTest.Compiled.__info__(:attributes)[:external_resource] ==
|
||||
[Path.join(__DIR__, "fixtures/eex_template_with_bindings.eex")]
|
||||
end
|
||||
end
|
||||
|
||||
describe "precompiled" do
|
||||
test "from string" do
|
||||
assert EExTest.Compiled.string_sample(1, 2) == "3"
|
||||
end
|
||||
|
||||
test "from file" do
|
||||
assert_normalized_newline_equal("foo 1\n", EExTest.Compiled.file_sample(1))
|
||||
assert_normalized_newline_equal("foo 1\n", EExTest.Compiled.public_file_sample(1))
|
||||
end
|
||||
|
||||
test "from file does not affect backtrace" do
|
||||
file = to_charlist(Path.relative_to_cwd(__ENV__.file))
|
||||
|
||||
assert EExTest.Compiled.before_compile() ==
|
||||
{7, {EExTest.Compiled, :before_compile, 0, [file: file, line: 7]}}
|
||||
|
||||
assert EExTest.Compiled.after_compile() ==
|
||||
{21, {EExTest.Compiled, :after_compile, 0, [file: file, line: 21]}}
|
||||
|
||||
assert EExTest.Compiled.unknown() ==
|
||||
{26, {EExTest.Compiled, :unknown, 0, [file: 'unknown', line: 26]}}
|
||||
end
|
||||
end
|
||||
|
||||
defmodule TestEngine do
|
||||
@behaviour EEx.Engine
|
||||
|
||||
def init(_opts) do
|
||||
"INIT"
|
||||
end
|
||||
|
||||
def handle_body(body) do
|
||||
"BODY(#{body})"
|
||||
end
|
||||
|
||||
def handle_begin(_) do
|
||||
"BEGIN"
|
||||
end
|
||||
|
||||
def handle_end(buffer) do
|
||||
buffer <> ":END"
|
||||
end
|
||||
|
||||
def handle_text(buffer, text) do
|
||||
buffer <> ":TEXT(#{String.trim(text)})"
|
||||
end
|
||||
|
||||
def handle_expr(buffer, "/", expr) do
|
||||
buffer <> ":DIV(#{Macro.to_string(expr)})"
|
||||
end
|
||||
|
||||
def handle_expr(buffer, "=", expr) do
|
||||
buffer <> ":EQUAL(#{Macro.to_string(expr)})"
|
||||
end
|
||||
|
||||
def handle_expr(buffer, mark, expr) do
|
||||
EEx.Engine.handle_expr(buffer, mark, expr)
|
||||
end
|
||||
end
|
||||
|
||||
describe "custom engines" do
|
||||
test "text" do
|
||||
assert_eval("BODY(INIT:TEXT(foo))", "foo", [], engine: TestEngine)
|
||||
end
|
||||
|
||||
test "custom marker" do
|
||||
assert_eval("BODY(INIT:TEXT(foo):DIV(:bar))", "foo <%/ :bar %>", [], engine: TestEngine)
|
||||
end
|
||||
|
||||
test "begin/end" do
|
||||
assert_eval(
|
||||
~s[BODY(INIT:TEXT(foo):EQUAL(if do\n "BEGIN:TEXT(this):END"\nelse\n "BEGIN:TEXT(that):END"\nend))],
|
||||
"foo <%= if do %>this<% else %>that<% end %>",
|
||||
[],
|
||||
engine: TestEngine
|
||||
)
|
||||
end
|
||||
|
||||
test "not implemented custom marker" do
|
||||
msg =
|
||||
~r/unsupported EEx syntax <%| %> \(the syntax is valid but not supported by the current EEx engine\)/
|
||||
|
||||
assert_raise EEx.SyntaxError, msg, fn ->
|
||||
assert_eval({:wrapped, "foo baz"}, "foo <%| :bar %>", [], engine: TestEngine)
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defp assert_eval(expected, actual, binding \\ [], opts \\ []) do
|
||||
opts = Keyword.merge([file: __ENV__.file, engine: opts[:engine] || EEx.Engine], opts)
|
||||
result = EEx.eval_string(actual, binding, opts)
|
||||
assert result == expected
|
||||
end
|
||||
|
||||
defp assert_normalized_newline_equal(expected, actual) do
|
||||
assert String.replace(expected, "\r\n", "\n") == String.replace(actual, "\r\n", "\n")
|
||||
end
|
||||
|
||||
def tuple_map({list, callback}) do
|
||||
Enum.map(list, callback)
|
||||
end
|
||||
|
||||
def switching_map(list, a, b) do
|
||||
list
|
||||
|> Enum.with_index()
|
||||
|> Enum.map(fn
|
||||
{element, index} when rem(index, 2) == 0 -> a.(element)
|
||||
{element, index} when rem(index, 2) == 1 -> b.(element)
|
||||
end)
|
||||
end
|
||||
|
||||
defmacro switching_macro(list, a, do: block) do
|
||||
quote do
|
||||
b = fn var!(x) ->
|
||||
unquote(block)
|
||||
end
|
||||
|
||||
unquote(__MODULE__).switching_map(unquote(list), unquote(a), b)
|
||||
end
|
||||
end
|
||||
end
|
||||
-1
@@ -1 +0,0 @@
|
||||
foo <%= if true do %>bar.<% end %>
|
||||
@@ -1 +0,0 @@
|
||||
foo <%= bar %>
|
||||
@@ -1 +0,0 @@
|
||||
ExUnit.start(trace: "--trace" in System.argv())
|
||||
@@ -1,17 +0,0 @@
|
||||
{'src/*', [
|
||||
warn_unused_vars,
|
||||
warn_export_all,
|
||||
warn_shadow_vars,
|
||||
warn_unused_import,
|
||||
warn_unused_function,
|
||||
warn_bif_clash,
|
||||
warn_unused_record,
|
||||
warn_deprecated_function,
|
||||
warn_obsolete_guard,
|
||||
warn_exported_vars,
|
||||
%% warn_missing_spec,
|
||||
%% warn_untyped_record,
|
||||
warnings_as_errors,
|
||||
debug_info,
|
||||
{outdir, "ebin/"}
|
||||
]}.
|
||||
@@ -1,103 +0,0 @@
|
||||
# Returns config for Elixir docs
|
||||
[
|
||||
extras: Path.wildcard("lib/elixir/pages/*.md"),
|
||||
groups_for_functions: [
|
||||
Guards: & &1[:guard] == true
|
||||
],
|
||||
skip_undefined_reference_warnings_on: ["compatibility-and-deprecations"],
|
||||
groups_for_modules: [
|
||||
# [Kernel, Kernel.SpecialForms],
|
||||
|
||||
"Basic Types": [
|
||||
Atom,
|
||||
Base,
|
||||
Bitwise,
|
||||
Date,
|
||||
DateTime,
|
||||
Exception,
|
||||
Float,
|
||||
Function,
|
||||
Integer,
|
||||
Module,
|
||||
NaiveDateTime,
|
||||
Record,
|
||||
Regex,
|
||||
String,
|
||||
Time,
|
||||
Tuple,
|
||||
URI,
|
||||
Version,
|
||||
Version.Requirement
|
||||
],
|
||||
"Collections & Enumerables": [
|
||||
Access,
|
||||
Date.Range,
|
||||
Enum,
|
||||
Keyword,
|
||||
List,
|
||||
Map,
|
||||
MapSet,
|
||||
Range,
|
||||
Stream
|
||||
],
|
||||
"IO & System": [
|
||||
File,
|
||||
File.Stat,
|
||||
File.Stream,
|
||||
IO,
|
||||
IO.ANSI,
|
||||
IO.Stream,
|
||||
OptionParser,
|
||||
Path,
|
||||
Port,
|
||||
StringIO,
|
||||
System
|
||||
],
|
||||
"Calendar": [
|
||||
Calendar,
|
||||
Calendar.ISO,
|
||||
Calendar.TimeZoneDatabase,
|
||||
Calendar.UTCOnlyTimeZoneDatabase
|
||||
],
|
||||
"Processes & Applications": [
|
||||
Agent,
|
||||
Application,
|
||||
Config,
|
||||
Config.Provider,
|
||||
Config.Reader,
|
||||
DynamicSupervisor,
|
||||
GenServer,
|
||||
Node,
|
||||
Process,
|
||||
Registry,
|
||||
Supervisor,
|
||||
Task,
|
||||
Task.Supervisor
|
||||
],
|
||||
Protocols: [
|
||||
Collectable,
|
||||
Enumerable,
|
||||
Inspect,
|
||||
Inspect.Algebra,
|
||||
Inspect.Opts,
|
||||
List.Chars,
|
||||
Protocol,
|
||||
String.Chars
|
||||
],
|
||||
"Code & Macros": [
|
||||
Code,
|
||||
Kernel.ParallelCompiler,
|
||||
Macro,
|
||||
Macro.Env
|
||||
],
|
||||
Deprecated: [
|
||||
Behaviour,
|
||||
Dict,
|
||||
GenEvent,
|
||||
HashDict,
|
||||
HashSet,
|
||||
Set,
|
||||
Supervisor.Spec
|
||||
]
|
||||
]
|
||||
]
|
||||
@@ -1,13 +0,0 @@
|
||||
#!/usr/bin/env escript
|
||||
%% -*- erlang -*-
|
||||
|
||||
main([Source, Target, Version]) ->
|
||||
{ok, [{application, Name, Props0}]} = file:consult(Source),
|
||||
Ebin = filename:dirname(Target),
|
||||
Files = filelib:wildcard(filename:join(Ebin, "*.beam")),
|
||||
Mods = [list_to_atom(filename:basename(F, ".beam")) || F <- Files],
|
||||
Props1 = lists:keyreplace(modules, 1, Props0, {modules, Mods}),
|
||||
Props = lists:keyreplace(vsn, 1, Props1, {vsn, Version}),
|
||||
AppDef = io_lib:format("~tp.~n", [{application, Name, Props}]),
|
||||
ok = file:write_file(Target, AppDef),
|
||||
io:format("Generated ~ts.app~n", [Name]).
|
||||
@@ -1,772 +0,0 @@
|
||||
defmodule Access do
|
||||
@moduledoc """
|
||||
Key-based access to data structures.
|
||||
|
||||
The `Access` module defines a behaviour for dynamically accessing
|
||||
keys of any type in a data structure via the `data[key]` syntax.
|
||||
|
||||
`Access` supports keyword lists (`Keyword`) and maps (`Map`) out
|
||||
of the box. The key can be of any type and it returns `nil` if
|
||||
the key does not exist:
|
||||
|
||||
iex> keywords = [a: 1, b: 2]
|
||||
iex> keywords[:a]
|
||||
1
|
||||
iex> keywords[:c]
|
||||
nil
|
||||
|
||||
iex> map = %{a: 1, b: 2}
|
||||
iex> map[:a]
|
||||
1
|
||||
|
||||
iex> star_ratings = %{1.0 => "★", 1.5 => "★☆", 2.0 => "★★"}
|
||||
iex> star_ratings[1.5]
|
||||
"★☆"
|
||||
|
||||
This syntax is very convenient as it can be nested arbitrarily:
|
||||
|
||||
iex> keywords = [a: 1, b: 2]
|
||||
iex> keywords[:c][:unknown]
|
||||
nil
|
||||
|
||||
This works because accessing anything on a `nil` value, returns
|
||||
`nil` itself:
|
||||
|
||||
iex> nil[:a]
|
||||
nil
|
||||
|
||||
The access syntax can also be used with the `Kernel.put_in/2`,
|
||||
`Kernel.update_in/2` and `Kernel.get_and_update_in/2` macros
|
||||
to allow values to be set in nested data structures:
|
||||
|
||||
iex> users = %{"john" => %{age: 27}, "meg" => %{age: 23}}
|
||||
iex> put_in(users["john"][:age], 28)
|
||||
%{"john" => %{age: 28}, "meg" => %{age: 23}}
|
||||
|
||||
> Attention! While the access syntax is allowed in maps via
|
||||
> `map[key]`, if your map is made of predefined atom keys,
|
||||
> you should prefer to access those atom keys with `map.key`
|
||||
> instead of `map[key]`, as `map.key` will raise if the key
|
||||
> is missing. This is important because, if a map has a predefined
|
||||
> set of keys and a key is missing, it is most likely a bug
|
||||
> in your software or a typo on the key name. For this reason,
|
||||
> because structs are predefined in nature, they only allow
|
||||
> the `struct.key` syntax and they do not allow the `struct[key]`
|
||||
> access syntax. See the `Map` module for more information.
|
||||
|
||||
## Nested data structures
|
||||
|
||||
Both key-based access syntaxes can be used with the nested update
|
||||
functions and macros in `Kernel`, such as `Kernel.get_in/2`,
|
||||
`Kernel.put_in/3`, `Kernel.update_in/3`, `Kernel.pop_in/2`, and
|
||||
`Kernel.get_and_update_in/3`.
|
||||
|
||||
For example, to update a map inside another map:
|
||||
|
||||
iex> users = %{"john" => %{age: 27}, "meg" => %{age: 23}}
|
||||
iex> put_in(users["john"].age, 28)
|
||||
%{"john" => %{age: 28}, "meg" => %{age: 23}}
|
||||
|
||||
This module provides convenience functions for traversing other
|
||||
structures, like tuples and lists. These functions can be used
|
||||
in all the `Access`-related functions and macros in `Kernel`.
|
||||
|
||||
For instance, given a user map with the `:name` and `:languages`
|
||||
keys, here is how to deeply traverse the map and convert all
|
||||
language names to uppercase:
|
||||
|
||||
iex> languages = [
|
||||
...> %{name: "elixir", type: :functional},
|
||||
...> %{name: "c", type: :procedural}
|
||||
...> ]
|
||||
iex> user = %{name: "john", languages: languages}
|
||||
iex> update_in(user, [:languages, Access.all(), :name], &String.upcase/1)
|
||||
%{
|
||||
name: "john",
|
||||
languages: [
|
||||
%{name: "ELIXIR", type: :functional},
|
||||
%{name: "C", type: :procedural}
|
||||
]
|
||||
}
|
||||
|
||||
See the functions `key/1`, `key!/1`, `elem/1`, and `all/0` for
|
||||
some of the available accessors.
|
||||
"""
|
||||
|
||||
@type container :: keyword | struct | map
|
||||
@type nil_container :: nil
|
||||
@type any_container :: any
|
||||
@type t :: container | nil_container | any_container
|
||||
@type key :: any
|
||||
@type value :: any
|
||||
|
||||
@type get_fun(data, get_value) ::
|
||||
(:get, data, (term -> term) ->
|
||||
{get_value, new_data :: container})
|
||||
|
||||
@type get_and_update_fun(data, get_value) ::
|
||||
(:get_and_update, data, (term -> term) ->
|
||||
{get_value, new_data :: container} | :pop)
|
||||
|
||||
@type access_fun(data, get_value) ::
|
||||
get_fun(data, get_value) | get_and_update_fun(data, get_value)
|
||||
|
||||
@doc """
|
||||
Invoked in order to access the value stored under `key` in the given term `term`.
|
||||
|
||||
This function should return `{:ok, value}` where `value` is the value under
|
||||
`key` if the key exists in the term, or `:error` if the key does not exist in
|
||||
the term.
|
||||
|
||||
Many of the functions defined in the `Access` module internally call this
|
||||
function. This function is also used when the square-brackets access syntax
|
||||
(`structure[key]`) is used: the `fetch/2` callback implemented by the module
|
||||
that defines the `structure` struct is invoked and if it returns `{:ok,
|
||||
value}` then `value` is returned, or if it returns `:error` then `nil` is
|
||||
returned.
|
||||
|
||||
See the `Map.fetch/2` and `Keyword.fetch/2` implementations for examples of
|
||||
how to implement this callback.
|
||||
"""
|
||||
@callback fetch(term :: t, key) :: {:ok, value} | :error
|
||||
|
||||
@doc """
|
||||
Invoked in order to access the value under `key` and update it at the same time.
|
||||
|
||||
The implementation of this callback should invoke `fun` with the value under
|
||||
`key` in the passed structure `data`, or with `nil` if `key` is not present in it.
|
||||
This function must return either `{get_value, update_value}` or `:pop`.
|
||||
|
||||
If the passed function returns `{get_value, update_value}`,
|
||||
the return value of this callback should be `{get_value, new_data}`, where:
|
||||
|
||||
* `get_value` is the retrieved value (which can be operated on before being returned)
|
||||
|
||||
* `update_value` is the new value to be stored under `key`
|
||||
|
||||
* `new_data` is `data` after updating the value of `key` with `update_value`.
|
||||
|
||||
If the passed function returns `:pop`, the return value of this callback
|
||||
must be `{value, new_data}` where `value` is the value under `key`
|
||||
(or `nil` if not present) and `new_data` is `data` without `key`.
|
||||
|
||||
See the implementations of `Map.get_and_update/3` or `Keyword.get_and_update/3`
|
||||
for more examples.
|
||||
"""
|
||||
@callback get_and_update(data, key, (value -> {get_value, value} | :pop)) :: {get_value, data}
|
||||
when get_value: var, data: container | any_container
|
||||
|
||||
@doc """
|
||||
Invoked to "pop" the value under `key` out of the given data structure.
|
||||
|
||||
When `key` exists in the given structure `data`, the implementation should
|
||||
return a `{value, new_data}` tuple where `value` is the value that was under
|
||||
`key` and `new_data` is `term` without `key`.
|
||||
|
||||
When `key` is not present in the given structure, a tuple `{value, data}`
|
||||
should be returned, where `value` is implementation-defined.
|
||||
|
||||
See the implementations for `Map.pop/3` or `Keyword.pop/3` for more examples.
|
||||
"""
|
||||
@callback pop(data, key) :: {value, data} when data: container | any_container
|
||||
|
||||
defmacrop raise_undefined_behaviour(exception, module, top) do
|
||||
quote do
|
||||
exception =
|
||||
case __STACKTRACE__ do
|
||||
[unquote(top) | _] ->
|
||||
reason = "#{inspect(unquote(module))} does not implement the Access behaviour"
|
||||
%{unquote(exception) | reason: reason}
|
||||
|
||||
_ ->
|
||||
unquote(exception)
|
||||
end
|
||||
|
||||
reraise exception, __STACKTRACE__
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Fetches the value for the given key in a container (a map, keyword
|
||||
list, or struct that implements the `Access` behaviour).
|
||||
|
||||
Returns `{:ok, value}` where `value` is the value under `key` if there is such
|
||||
a key, or `:error` if `key` is not found.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Access.fetch(%{name: "meg", age: 26}, :name)
|
||||
{:ok, "meg"}
|
||||
|
||||
iex> Access.fetch([ordered: true, on_timeout: :exit], :timeout)
|
||||
:error
|
||||
|
||||
"""
|
||||
@spec fetch(container, term) :: {:ok, term} | :error
|
||||
@spec fetch(nil_container, any) :: :error
|
||||
def fetch(container, key)
|
||||
|
||||
def fetch(%module{} = container, key) do
|
||||
module.fetch(container, key)
|
||||
rescue
|
||||
exception in UndefinedFunctionError ->
|
||||
raise_undefined_behaviour(exception, module, {^module, :fetch, [^container, ^key], _})
|
||||
end
|
||||
|
||||
def fetch(map, key) when is_map(map) do
|
||||
case map do
|
||||
%{^key => value} -> {:ok, value}
|
||||
_ -> :error
|
||||
end
|
||||
end
|
||||
|
||||
def fetch(list, key) when is_list(list) and is_atom(key) do
|
||||
case :lists.keyfind(key, 1, list) do
|
||||
{_, value} -> {:ok, value}
|
||||
false -> :error
|
||||
end
|
||||
end
|
||||
|
||||
def fetch(list, key) when is_list(list) do
|
||||
raise ArgumentError,
|
||||
"the Access calls for keywords expect the key to be an atom, got: " <> inspect(key)
|
||||
end
|
||||
|
||||
def fetch(nil, _key) do
|
||||
:error
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets the value for the given key in a container (a map, keyword
|
||||
list, or struct that implements the `Access` behaviour).
|
||||
|
||||
Returns the value under `key` if there is such a key, or `default` if `key` is
|
||||
not found.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Access.get(%{name: "john"}, :name, "default name")
|
||||
"john"
|
||||
iex> Access.get(%{name: "john"}, :age, 25)
|
||||
25
|
||||
|
||||
iex> Access.get([ordered: true], :timeout)
|
||||
nil
|
||||
|
||||
"""
|
||||
@spec get(container, term, term) :: term
|
||||
@spec get(nil_container, any, default) :: default when default: var
|
||||
def get(container, key, default \\ nil)
|
||||
|
||||
# Reimplementing the same logic as Access.fetch/2 here is done for performance, since
|
||||
# this is called a lot and calling fetch/2 means introducing some overhead (like
|
||||
# building the "{:ok, _}" tuple and deconstructing it back right away).
|
||||
|
||||
def get(%module{} = container, key, default) do
|
||||
try do
|
||||
module.fetch(container, key)
|
||||
rescue
|
||||
exception in UndefinedFunctionError ->
|
||||
raise_undefined_behaviour(exception, module, {^module, :fetch, [^container, ^key], _})
|
||||
else
|
||||
{:ok, value} -> value
|
||||
:error -> default
|
||||
end
|
||||
end
|
||||
|
||||
def get(map, key, default) when is_map(map) do
|
||||
case map do
|
||||
%{^key => value} -> value
|
||||
_ -> default
|
||||
end
|
||||
end
|
||||
|
||||
def get(list, key, default) when is_list(list) and is_atom(key) do
|
||||
case :lists.keyfind(key, 1, list) do
|
||||
{_, value} -> value
|
||||
false -> default
|
||||
end
|
||||
end
|
||||
|
||||
def get(list, key, _default) when is_list(list) do
|
||||
raise ArgumentError,
|
||||
"the Access calls for keywords expect the key to be an atom, got: " <> inspect(key)
|
||||
end
|
||||
|
||||
def get(nil, _key, default) do
|
||||
default
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets and updates the given key in a `container` (a map, a keyword list,
|
||||
a struct that implements the `Access` behaviour).
|
||||
|
||||
The `fun` argument receives the value of `key` (or `nil` if `key` is not
|
||||
present in `container`) and must return a two-element tuple `{get_value, update_value}`:
|
||||
the "get" value `get_value` (the retrieved value, which can be operated on before
|
||||
being returned) and the new value to be stored under `key` (`update_value`).
|
||||
`fun` may also return `:pop`, which means the current value
|
||||
should be removed from the container and returned.
|
||||
|
||||
The returned value is a two-element tuple with the "get" value returned by
|
||||
`fun` and a new container with the updated value under `key`.
|
||||
"""
|
||||
@spec get_and_update(data, key, (value -> {get_value, value} | :pop)) :: {get_value, data}
|
||||
when get_value: var, data: container
|
||||
def get_and_update(container, key, fun)
|
||||
|
||||
def get_and_update(%module{} = container, key, fun) do
|
||||
module.get_and_update(container, key, fun)
|
||||
rescue
|
||||
exception in UndefinedFunctionError ->
|
||||
raise_undefined_behaviour(
|
||||
exception,
|
||||
module,
|
||||
{^module, :get_and_update, [^container, ^key, ^fun], _}
|
||||
)
|
||||
end
|
||||
|
||||
def get_and_update(map, key, fun) when is_map(map) do
|
||||
Map.get_and_update(map, key, fun)
|
||||
end
|
||||
|
||||
def get_and_update(list, key, fun) when is_list(list) do
|
||||
Keyword.get_and_update(list, key, fun)
|
||||
end
|
||||
|
||||
def get_and_update(nil, key, _fun) do
|
||||
raise ArgumentError, "could not put/update key #{inspect(key)} on a nil value"
|
||||
end
|
||||
|
||||
@doc """
|
||||
Removes the entry with a given key from a container (a map, keyword
|
||||
list, or struct that implements the `Access` behaviour).
|
||||
|
||||
Returns a tuple containing the value associated with the key and the
|
||||
updated container. `nil` is returned for the value if the key isn't
|
||||
in the container.
|
||||
|
||||
## Examples
|
||||
|
||||
With a map:
|
||||
|
||||
iex> Access.pop(%{name: "Elixir", creator: "Valim"}, :name)
|
||||
{"Elixir", %{creator: "Valim"}}
|
||||
|
||||
A keyword list:
|
||||
|
||||
iex> Access.pop([name: "Elixir", creator: "Valim"], :name)
|
||||
{"Elixir", [creator: "Valim"]}
|
||||
|
||||
An unknown key:
|
||||
|
||||
iex> Access.pop(%{name: "Elixir", creator: "Valim"}, :year)
|
||||
{nil, %{creator: "Valim", name: "Elixir"}}
|
||||
|
||||
"""
|
||||
@spec pop(data, key) :: {value, data} when data: container
|
||||
def pop(%module{} = container, key) do
|
||||
module.pop(container, key)
|
||||
rescue
|
||||
exception in UndefinedFunctionError ->
|
||||
raise_undefined_behaviour(exception, module, {^module, :pop, [^container, ^key], _})
|
||||
end
|
||||
|
||||
def pop(map, key) when is_map(map) do
|
||||
Map.pop(map, key)
|
||||
end
|
||||
|
||||
def pop(list, key) when is_list(list) do
|
||||
Keyword.pop(list, key)
|
||||
end
|
||||
|
||||
def pop(nil, key) do
|
||||
raise ArgumentError, "could not pop key #{inspect(key)} on a nil value"
|
||||
end
|
||||
|
||||
## Accessors
|
||||
|
||||
@doc """
|
||||
Returns a function that accesses the given key in a map/struct.
|
||||
|
||||
The returned function is typically passed as an accessor to `Kernel.get_in/2`,
|
||||
`Kernel.get_and_update_in/3`, and friends.
|
||||
|
||||
The returned function uses the default value if the key does not exist.
|
||||
This can be used to specify defaults and safely traverse missing keys:
|
||||
|
||||
iex> get_in(%{}, [Access.key(:user, %{name: "meg"}), Access.key(:name)])
|
||||
"meg"
|
||||
|
||||
Such is also useful when using update functions, allowing us to introduce
|
||||
values as we traverse the data structure for updates:
|
||||
|
||||
iex> put_in(%{}, [Access.key(:user, %{}), Access.key(:name)], "Mary")
|
||||
%{user: %{name: "Mary"}}
|
||||
|
||||
## Examples
|
||||
|
||||
iex> map = %{user: %{name: "john"}}
|
||||
iex> get_in(map, [Access.key(:unknown, %{}), Access.key(:name, "john")])
|
||||
"john"
|
||||
iex> get_and_update_in(map, [Access.key(:user), Access.key(:name)], fn prev ->
|
||||
...> {prev, String.upcase(prev)}
|
||||
...> end)
|
||||
{"john", %{user: %{name: "JOHN"}}}
|
||||
iex> pop_in(map, [Access.key(:user), Access.key(:name)])
|
||||
{"john", %{user: %{}}}
|
||||
|
||||
An error is raised if the accessed structure is not a map or a struct:
|
||||
|
||||
iex> get_in(nil, [Access.key(:foo)])
|
||||
** (BadMapError) expected a map, got: nil
|
||||
|
||||
iex> get_in([], [Access.key(:foo)])
|
||||
** (BadMapError) expected a map, got: []
|
||||
|
||||
"""
|
||||
@spec key(key, term) :: access_fun(data :: struct | map, get_value :: term)
|
||||
def key(key, default \\ nil) do
|
||||
fn
|
||||
:get, data, next ->
|
||||
next.(Map.get(data, key, default))
|
||||
|
||||
:get_and_update, data, next ->
|
||||
value = Map.get(data, key, default)
|
||||
|
||||
case next.(value) do
|
||||
{get, update} -> {get, Map.put(data, key, update)}
|
||||
:pop -> {value, Map.delete(data, key)}
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns a function that accesses the given key in a map/struct.
|
||||
|
||||
The returned function is typically passed as an accessor to `Kernel.get_in/2`,
|
||||
`Kernel.get_and_update_in/3`, and friends.
|
||||
|
||||
Similar to `key/2`, but the returned function raises if the key does not exist.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> map = %{user: %{name: "john"}}
|
||||
iex> get_in(map, [Access.key!(:user), Access.key!(:name)])
|
||||
"john"
|
||||
iex> get_and_update_in(map, [Access.key!(:user), Access.key!(:name)], fn prev ->
|
||||
...> {prev, String.upcase(prev)}
|
||||
...> end)
|
||||
{"john", %{user: %{name: "JOHN"}}}
|
||||
iex> pop_in(map, [Access.key!(:user), Access.key!(:name)])
|
||||
{"john", %{user: %{}}}
|
||||
iex> get_in(map, [Access.key!(:user), Access.key!(:unknown)])
|
||||
** (KeyError) key :unknown not found in: %{name: \"john\"}
|
||||
|
||||
An error is raised if the accessed structure is not a map/struct:
|
||||
|
||||
iex> get_in([], [Access.key!(:foo)])
|
||||
** (RuntimeError) Access.key!/1 expected a map/struct, got: []
|
||||
|
||||
"""
|
||||
@spec key!(key) :: access_fun(data :: struct | map, get_value :: term)
|
||||
def key!(key) do
|
||||
fn
|
||||
:get, %{} = data, next ->
|
||||
next.(Map.fetch!(data, key))
|
||||
|
||||
:get_and_update, %{} = data, next ->
|
||||
value = Map.fetch!(data, key)
|
||||
|
||||
case next.(value) do
|
||||
{get, update} -> {get, Map.put(data, key, update)}
|
||||
:pop -> {value, Map.delete(data, key)}
|
||||
end
|
||||
|
||||
_op, data, _next ->
|
||||
raise "Access.key!/1 expected a map/struct, got: #{inspect(data)}"
|
||||
end
|
||||
end
|
||||
|
||||
@doc ~S"""
|
||||
Returns a function that accesses the element at the given index in a tuple.
|
||||
|
||||
The returned function is typically passed as an accessor to `Kernel.get_in/2`,
|
||||
`Kernel.get_and_update_in/3`, and friends.
|
||||
|
||||
The returned function raises if `index` is out of bounds.
|
||||
|
||||
Note that popping elements out of tuples is not possible and raises an
|
||||
error.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> map = %{user: {"john", 27}}
|
||||
iex> get_in(map, [:user, Access.elem(0)])
|
||||
"john"
|
||||
iex> get_and_update_in(map, [:user, Access.elem(0)], fn prev ->
|
||||
...> {prev, String.upcase(prev)}
|
||||
...> end)
|
||||
{"john", %{user: {"JOHN", 27}}}
|
||||
iex> pop_in(map, [:user, Access.elem(0)])
|
||||
** (RuntimeError) cannot pop data from a tuple
|
||||
|
||||
An error is raised if the accessed structure is not a tuple:
|
||||
|
||||
iex> get_in(%{}, [Access.elem(0)])
|
||||
** (RuntimeError) Access.elem/1 expected a tuple, got: %{}
|
||||
|
||||
"""
|
||||
@spec elem(non_neg_integer) :: access_fun(data :: tuple, get_value :: term)
|
||||
def elem(index) when is_integer(index) and index >= 0 do
|
||||
pos = index + 1
|
||||
|
||||
fn
|
||||
:get, data, next when is_tuple(data) ->
|
||||
next.(:erlang.element(pos, data))
|
||||
|
||||
:get_and_update, data, next when is_tuple(data) ->
|
||||
value = :erlang.element(pos, data)
|
||||
|
||||
case next.(value) do
|
||||
{get, update} -> {get, :erlang.setelement(pos, data, update)}
|
||||
:pop -> raise "cannot pop data from a tuple"
|
||||
end
|
||||
|
||||
_op, data, _next ->
|
||||
raise "Access.elem/1 expected a tuple, got: #{inspect(data)}"
|
||||
end
|
||||
end
|
||||
|
||||
@doc ~S"""
|
||||
Returns a function that accesses all the elements in a list.
|
||||
|
||||
The returned function is typically passed as an accessor to `Kernel.get_in/2`,
|
||||
`Kernel.get_and_update_in/3`, and friends.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> list = [%{name: "john"}, %{name: "mary"}]
|
||||
iex> get_in(list, [Access.all(), :name])
|
||||
["john", "mary"]
|
||||
iex> get_and_update_in(list, [Access.all(), :name], fn prev ->
|
||||
...> {prev, String.upcase(prev)}
|
||||
...> end)
|
||||
{["john", "mary"], [%{name: "JOHN"}, %{name: "MARY"}]}
|
||||
iex> pop_in(list, [Access.all(), :name])
|
||||
{["john", "mary"], [%{}, %{}]}
|
||||
|
||||
Here is an example that traverses the list dropping even
|
||||
numbers and multiplying odd numbers by 2:
|
||||
|
||||
iex> require Integer
|
||||
iex> get_and_update_in([1, 2, 3, 4, 5], [Access.all()], fn num ->
|
||||
...> if Integer.is_even(num), do: :pop, else: {num, num * 2}
|
||||
...> end)
|
||||
{[1, 2, 3, 4, 5], [2, 6, 10]}
|
||||
|
||||
An error is raised if the accessed structure is not a list:
|
||||
|
||||
iex> get_in(%{}, [Access.all()])
|
||||
** (RuntimeError) Access.all/0 expected a list, got: %{}
|
||||
|
||||
"""
|
||||
@spec all() :: access_fun(data :: list, get_value :: list)
|
||||
def all() do
|
||||
&all/3
|
||||
end
|
||||
|
||||
defp all(:get, data, next) when is_list(data) do
|
||||
Enum.map(data, next)
|
||||
end
|
||||
|
||||
defp all(:get_and_update, data, next) when is_list(data) do
|
||||
all(data, next, _gets = [], _updates = [])
|
||||
end
|
||||
|
||||
defp all(_op, data, _next) do
|
||||
raise "Access.all/0 expected a list, got: #{inspect(data)}"
|
||||
end
|
||||
|
||||
defp all([head | rest], next, gets, updates) do
|
||||
case next.(head) do
|
||||
{get, update} -> all(rest, next, [get | gets], [update | updates])
|
||||
:pop -> all(rest, next, [head | gets], updates)
|
||||
end
|
||||
end
|
||||
|
||||
defp all([], _next, gets, updates) do
|
||||
{:lists.reverse(gets), :lists.reverse(updates)}
|
||||
end
|
||||
|
||||
@doc ~S"""
|
||||
Returns a function that accesses the element at `index` (zero based) of a list.
|
||||
|
||||
The returned function is typically passed as an accessor to `Kernel.get_in/2`,
|
||||
`Kernel.get_and_update_in/3`, and friends.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> list = [%{name: "john"}, %{name: "mary"}]
|
||||
iex> get_in(list, [Access.at(1), :name])
|
||||
"mary"
|
||||
iex> get_in(list, [Access.at(-1), :name])
|
||||
"mary"
|
||||
iex> get_and_update_in(list, [Access.at(0), :name], fn prev ->
|
||||
...> {prev, String.upcase(prev)}
|
||||
...> end)
|
||||
{"john", [%{name: "JOHN"}, %{name: "mary"}]}
|
||||
iex> get_and_update_in(list, [Access.at(-1), :name], fn prev ->
|
||||
...> {prev, String.upcase(prev)}
|
||||
...> end)
|
||||
{"mary", [%{name: "john"}, %{name: "MARY"}]}
|
||||
|
||||
`at/1` can also be used to pop elements out of a list or
|
||||
a key inside of a list:
|
||||
|
||||
iex> list = [%{name: "john"}, %{name: "mary"}]
|
||||
iex> pop_in(list, [Access.at(0)])
|
||||
{%{name: "john"}, [%{name: "mary"}]}
|
||||
iex> pop_in(list, [Access.at(0), :name])
|
||||
{"john", [%{}, %{name: "mary"}]}
|
||||
|
||||
When the index is out of bounds, `nil` is returned and the update function is never called:
|
||||
|
||||
iex> list = [%{name: "john"}, %{name: "mary"}]
|
||||
iex> get_in(list, [Access.at(10), :name])
|
||||
nil
|
||||
iex> get_and_update_in(list, [Access.at(10), :name], fn prev ->
|
||||
...> {prev, String.upcase(prev)}
|
||||
...> end)
|
||||
{nil, [%{name: "john"}, %{name: "mary"}]}
|
||||
|
||||
An error is raised if the accessed structure is not a list:
|
||||
|
||||
iex> get_in(%{}, [Access.at(1)])
|
||||
** (RuntimeError) Access.at/1 expected a list, got: %{}
|
||||
|
||||
"""
|
||||
@spec at(integer) :: access_fun(data :: list, get_value :: term)
|
||||
def at(index) when is_integer(index) do
|
||||
fn op, data, next -> at(op, data, index, next) end
|
||||
end
|
||||
|
||||
defp at(:get, data, index, next) when is_list(data) do
|
||||
data |> Enum.at(index) |> next.()
|
||||
end
|
||||
|
||||
defp at(:get_and_update, data, index, next) when is_list(data) do
|
||||
get_and_update_at(data, index, next, [])
|
||||
end
|
||||
|
||||
defp at(_op, data, _index, _next) do
|
||||
raise "Access.at/1 expected a list, got: #{inspect(data)}"
|
||||
end
|
||||
|
||||
defp get_and_update_at([head | rest], 0, next, updates) do
|
||||
case next.(head) do
|
||||
{get, update} -> {get, :lists.reverse([update | updates], rest)}
|
||||
:pop -> {head, :lists.reverse(updates, rest)}
|
||||
end
|
||||
end
|
||||
|
||||
defp get_and_update_at(list, index, next, updates) when index < 0 do
|
||||
list_length = length(list)
|
||||
|
||||
if list_length + index >= 0 do
|
||||
get_and_update_at(list, list_length + index, next, updates)
|
||||
else
|
||||
{nil, list}
|
||||
end
|
||||
end
|
||||
|
||||
defp get_and_update_at([head | rest], index, next, updates) when index > 0 do
|
||||
get_and_update_at(rest, index - 1, next, [head | updates])
|
||||
end
|
||||
|
||||
defp get_and_update_at([], _index, _next, updates) do
|
||||
{nil, :lists.reverse(updates)}
|
||||
end
|
||||
|
||||
@doc ~S"""
|
||||
Returns a function that accesses all elements of a list that match the provided predicate.
|
||||
|
||||
The returned function is typically passed as an accessor to `Kernel.get_in/2`,
|
||||
`Kernel.get_and_update_in/3`, and friends.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> list = [%{name: "john", salary: 10}, %{name: "francine", salary: 30}]
|
||||
iex> get_in(list, [Access.filter(&(&1.salary > 20)), :name])
|
||||
["francine"]
|
||||
iex> get_and_update_in(list, [Access.filter(&(&1.salary <= 20)), :name], fn prev ->
|
||||
...> {prev, String.upcase(prev)}
|
||||
...> end)
|
||||
{["john"], [%{name: "JOHN", salary: 10}, %{name: "francine", salary: 30}]}
|
||||
|
||||
`filter/1` can also be used to pop elements out of a list or
|
||||
a key inside of a list:
|
||||
|
||||
iex> list = [%{name: "john", salary: 10}, %{name: "francine", salary: 30}]
|
||||
iex> pop_in(list, [Access.filter(&(&1.salary >= 20))])
|
||||
{[%{name: "francine", salary: 30}], [%{name: "john", salary: 10}]}
|
||||
iex> pop_in(list, [Access.filter(&(&1.salary >= 20)), :name])
|
||||
{["francine"], [%{name: "john", salary: 10}, %{salary: 30}]}
|
||||
|
||||
When no match is found, an empty list is returned and the update function is never called
|
||||
|
||||
iex> list = [%{name: "john", salary: 10}, %{name: "francine", salary: 30}]
|
||||
iex> get_in(list, [Access.filter(&(&1.salary >= 50)), :name])
|
||||
[]
|
||||
iex> get_and_update_in(list, [Access.filter(&(&1.salary >= 50)), :name], fn prev ->
|
||||
...> {prev, String.upcase(prev)}
|
||||
...> end)
|
||||
{[], [%{name: "john", salary: 10}, %{name: "francine", salary: 30}]}
|
||||
|
||||
An error is raised if the predicate is not a function or is of the incorrect arity:
|
||||
|
||||
iex> get_in([], [Access.filter(5)])
|
||||
** (FunctionClauseError) no function clause matching in Access.filter/1
|
||||
|
||||
An error is raised if the accessed structure is not a list:
|
||||
|
||||
iex> get_in(%{}, [Access.filter(fn a -> a == 10 end)])
|
||||
** (RuntimeError) Access.filter/1 expected a list, got: %{}
|
||||
|
||||
"""
|
||||
@doc since: "1.6.0"
|
||||
@spec filter((term -> boolean)) :: access_fun(data :: list, get_value :: list)
|
||||
def filter(func) when is_function(func) do
|
||||
fn op, data, next -> filter(op, data, func, next) end
|
||||
end
|
||||
|
||||
defp filter(:get, data, func, next) when is_list(data) do
|
||||
data |> Enum.filter(func) |> Enum.map(next)
|
||||
end
|
||||
|
||||
defp filter(:get_and_update, data, func, next) when is_list(data) do
|
||||
get_and_update_filter(data, func, next, [], [])
|
||||
end
|
||||
|
||||
defp filter(_op, data, _func, _next) do
|
||||
raise "Access.filter/1 expected a list, got: #{inspect(data)}"
|
||||
end
|
||||
|
||||
defp get_and_update_filter([head | rest], func, next, updates, gets) do
|
||||
if func.(head) do
|
||||
case next.(head) do
|
||||
{get, update} ->
|
||||
get_and_update_filter(rest, func, next, [update | updates], [get | gets])
|
||||
|
||||
:pop ->
|
||||
get_and_update_filter(rest, func, next, updates, [head | gets])
|
||||
end
|
||||
else
|
||||
get_and_update_filter(rest, func, next, [head | updates], gets)
|
||||
end
|
||||
end
|
||||
|
||||
defp get_and_update_filter([], _func, _next, updates, gets) do
|
||||
{:lists.reverse(gets), :lists.reverse(updates)}
|
||||
end
|
||||
end
|
||||
@@ -1,481 +0,0 @@
|
||||
defmodule Agent do
|
||||
@moduledoc """
|
||||
Agents are a simple abstraction around state.
|
||||
|
||||
Often in Elixir there is a need to share or store state that
|
||||
must be accessed from different processes or by the same process
|
||||
at different points in time.
|
||||
|
||||
The `Agent` module provides a basic server implementation that
|
||||
allows state to be retrieved and updated via a simple API.
|
||||
|
||||
## Examples
|
||||
|
||||
For example, the following agent implements a counter:
|
||||
|
||||
defmodule Counter do
|
||||
use Agent
|
||||
|
||||
def start_link(initial_value) do
|
||||
Agent.start_link(fn -> initial_value end, name: __MODULE__)
|
||||
end
|
||||
|
||||
def value do
|
||||
Agent.get(__MODULE__, & &1)
|
||||
end
|
||||
|
||||
def increment do
|
||||
Agent.update(__MODULE__, &(&1 + 1))
|
||||
end
|
||||
end
|
||||
|
||||
Usage would be:
|
||||
|
||||
Counter.start_link(0)
|
||||
#=> {:ok, #PID<0.123.0>}
|
||||
|
||||
Counter.value()
|
||||
#=> 0
|
||||
|
||||
Counter.increment()
|
||||
#=> :ok
|
||||
|
||||
Counter.increment()
|
||||
#=> :ok
|
||||
|
||||
Counter.value()
|
||||
#=> 2
|
||||
|
||||
Thanks to the agent server process, the counter can be safely incremented
|
||||
concurrently.
|
||||
|
||||
Agents provide a segregation between the client and server APIs (similar to
|
||||
`GenServer`s). In particular, the functions passed as arguments to the calls to
|
||||
`Agent` functions are invoked inside the agent (the server). This distinction
|
||||
is important because you may want to avoid expensive operations inside the
|
||||
agent, as they will effectively block the agent until the request is
|
||||
fulfilled.
|
||||
|
||||
Consider these two examples:
|
||||
|
||||
# Compute in the agent/server
|
||||
def get_something(agent) do
|
||||
Agent.get(agent, fn state -> do_something_expensive(state) end)
|
||||
end
|
||||
|
||||
# Compute in the agent/client
|
||||
def get_something(agent) do
|
||||
Agent.get(agent, & &1) |> do_something_expensive()
|
||||
end
|
||||
|
||||
The first function blocks the agent. The second function copies all the state
|
||||
to the client and then executes the operation in the client. One aspect to
|
||||
consider is whether the data is large enough to require processing in the server,
|
||||
at least initially, or small enough to be sent to the client cheaply. Another
|
||||
factor is whether the data needs to be processed atomically: getting the
|
||||
state and calling `do_something_expensive(state)` outside of the agent means
|
||||
that the agent's state can be updated in the meantime. This is specially
|
||||
important in case of updates as computing the new state in the client rather
|
||||
than in the server can lead to race conditions if multiple clients are trying
|
||||
to update the same state to different values.
|
||||
|
||||
## How to supervise
|
||||
|
||||
An `Agent` is most commonly started under a supervision tree.
|
||||
When we invoke `use Agent`, it automatically defines a `child_spec/1`
|
||||
function that allows us to start the agent directly under a supervisor.
|
||||
To start an agent under a supervisor with an initial counter of 0,
|
||||
one may do:
|
||||
|
||||
children = [
|
||||
{Counter, 0}
|
||||
]
|
||||
|
||||
Supervisor.start_link(children, strategy: :one_for_all)
|
||||
|
||||
While one could also simply pass the `Counter` as a child to the supervisor,
|
||||
such as:
|
||||
|
||||
children = [
|
||||
Counter # Same as {Counter, []}
|
||||
]
|
||||
|
||||
Supervisor.start_link(children, strategy: :one_for_all)
|
||||
|
||||
The definition above wouldn't work for this particular example,
|
||||
as it would attempt to start the counter with an initial value
|
||||
of an empty list. However, this may be a viable option in your
|
||||
own agents. A common approach is to use a keyword list, as that
|
||||
would allow setting the initial value and giving a name to the
|
||||
counter process, for example:
|
||||
|
||||
def start_link(opts) do
|
||||
{initial_value, opts} = Keyword.pop(opts, :initial_value, 0)
|
||||
Agent.start_link(fn -> initial_value end, opts)
|
||||
end
|
||||
|
||||
and then you can use `Counter`, `{Counter, name: :my_counter}` or
|
||||
even `{Counter, initial_value: 0, name: :my_counter}` as a child
|
||||
specification.
|
||||
|
||||
`use Agent` also accepts a list of options which configures the
|
||||
child specification and therefore how it runs under a supervisor.
|
||||
The generated `child_spec/1` can be customized with the following options:
|
||||
|
||||
* `:id` - the child specification identifier, defaults to the current module
|
||||
* `:restart` - when the child should be restarted, defaults to `:permanent`
|
||||
* `:shutdown` - how to shut down the child, either immediately or by giving it time to shut down
|
||||
|
||||
For example:
|
||||
|
||||
use Agent, restart: :transient, shutdown: 10_000
|
||||
|
||||
See the "Child specification" section in the `Supervisor` module for more
|
||||
detailed information. The `@doc` annotation immediately preceding
|
||||
`use Agent` will be attached to the generated `child_spec/1` function.
|
||||
|
||||
## Name registration
|
||||
|
||||
An agent is bound to the same name registration rules as GenServers.
|
||||
Read more about it in the `GenServer` documentation.
|
||||
|
||||
## A word on distributed agents
|
||||
|
||||
It is important to consider the limitations of distributed agents. Agents
|
||||
provide two APIs, one that works with anonymous functions and another
|
||||
that expects an explicit module, function, and arguments.
|
||||
|
||||
In a distributed setup with multiple nodes, the API that accepts anonymous
|
||||
functions only works if the caller (client) and the agent have the same
|
||||
version of the caller module.
|
||||
|
||||
Keep in mind this issue also shows up when performing "rolling upgrades"
|
||||
with agents. By rolling upgrades we mean the following situation: you wish
|
||||
to deploy a new version of your software by *shutting down* some of your
|
||||
nodes and replacing them with nodes running a new version of the software.
|
||||
In this setup, part of your environment will have one version of a given
|
||||
module and the other part another version (the newer one) of the same module.
|
||||
|
||||
The best solution is to simply use the explicit module, function, and arguments
|
||||
APIs when working with distributed agents.
|
||||
|
||||
## Hot code swapping
|
||||
|
||||
An agent can have its code hot swapped live by simply passing a module,
|
||||
function, and arguments tuple to the update instruction. For example, imagine
|
||||
you have an agent named `:sample` and you want to convert its inner state
|
||||
from a keyword list to a map. It can be done with the following
|
||||
instruction:
|
||||
|
||||
{:update, :sample, {:advanced, {Enum, :into, [%{}]}}}
|
||||
|
||||
The agent's state will be added to the given list of arguments (`[%{}]`) as
|
||||
the first argument.
|
||||
"""
|
||||
|
||||
@typedoc "Return values of `start*` functions"
|
||||
@type on_start :: {:ok, pid} | {:error, {:already_started, pid} | term}
|
||||
|
||||
@typedoc "The agent name"
|
||||
@type name :: atom | {:global, term} | {:via, module, term}
|
||||
|
||||
@typedoc "The agent reference"
|
||||
@type agent :: pid | {atom, node} | name
|
||||
|
||||
@typedoc "The agent state"
|
||||
@type state :: term
|
||||
|
||||
@doc """
|
||||
Returns a specification to start an agent under a supervisor.
|
||||
|
||||
See the "Child specification" section in the `Supervisor` module for more detailed information.
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
def child_spec(arg) do
|
||||
%{
|
||||
id: Agent,
|
||||
start: {Agent, :start_link, [arg]}
|
||||
}
|
||||
end
|
||||
|
||||
@doc false
|
||||
defmacro __using__(opts) do
|
||||
quote location: :keep, bind_quoted: [opts: opts] do
|
||||
if Module.get_attribute(__MODULE__, :doc) == nil do
|
||||
@doc """
|
||||
Returns a specification to start this module under a supervisor.
|
||||
|
||||
See `Supervisor`.
|
||||
"""
|
||||
end
|
||||
|
||||
def child_spec(arg) do
|
||||
default = %{
|
||||
id: __MODULE__,
|
||||
start: {__MODULE__, :start_link, [arg]}
|
||||
}
|
||||
|
||||
Supervisor.child_spec(default, unquote(Macro.escape(opts)))
|
||||
end
|
||||
|
||||
defoverridable child_spec: 1
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Starts an agent linked to the current process with the given function.
|
||||
|
||||
This is often used to start the agent as part of a supervision tree.
|
||||
|
||||
Once the agent is spawned, the given function `fun` is invoked in the server
|
||||
process, and should return the initial agent state. Note that `start_link/2`
|
||||
does not return until the given function has returned.
|
||||
|
||||
## Options
|
||||
|
||||
The `:name` option is used for registration as described in the module
|
||||
documentation.
|
||||
|
||||
If the `:timeout` option is present, the agent is allowed to spend at most
|
||||
the given number of milliseconds on initialization or it will be terminated
|
||||
and the start function will return `{:error, :timeout}`.
|
||||
|
||||
If the `:debug` option is present, the corresponding function in the
|
||||
[`:sys` module](http://www.erlang.org/doc/man/sys.html) will be invoked.
|
||||
|
||||
If the `:spawn_opt` option is present, its value will be passed as options
|
||||
to the underlying process as in `Process.spawn/4`.
|
||||
|
||||
## Return values
|
||||
|
||||
If the server is successfully created and initialized, the function returns
|
||||
`{:ok, pid}`, where `pid` is the PID of the server. If an agent with the
|
||||
specified name already exists, the function returns
|
||||
`{:error, {:already_started, pid}}` with the PID of that process.
|
||||
|
||||
If the given function callback fails, the function returns `{:error, reason}`.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> {:ok, pid} = Agent.start_link(fn -> 42 end)
|
||||
iex> Agent.get(pid, fn state -> state end)
|
||||
42
|
||||
|
||||
iex> {:error, {exception, _stacktrace}} = Agent.start(fn -> raise "oops" end)
|
||||
iex> exception
|
||||
%RuntimeError{message: "oops"}
|
||||
|
||||
"""
|
||||
@spec start_link((() -> term), GenServer.options()) :: on_start
|
||||
def start_link(fun, options \\ []) when is_function(fun, 0) do
|
||||
GenServer.start_link(Agent.Server, fun, options)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Starts an agent linked to the current process.
|
||||
|
||||
Same as `start_link/2` but a module, function, and arguments are expected
|
||||
instead of an anonymous function; `fun` in `module` will be called with the
|
||||
given arguments `args` to initialize the state.
|
||||
"""
|
||||
@spec start_link(module, atom, [any], GenServer.options()) :: on_start
|
||||
def start_link(module, fun, args, options \\ []) do
|
||||
GenServer.start_link(Agent.Server, {module, fun, args}, options)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Starts an agent process without links (outside of a supervision tree).
|
||||
|
||||
See `start_link/2` for more information.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> {:ok, pid} = Agent.start(fn -> 42 end)
|
||||
iex> Agent.get(pid, fn state -> state end)
|
||||
42
|
||||
|
||||
"""
|
||||
@spec start((() -> term), GenServer.options()) :: on_start
|
||||
def start(fun, options \\ []) when is_function(fun, 0) do
|
||||
GenServer.start(Agent.Server, fun, options)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Starts an agent without links with the given module, function, and arguments.
|
||||
|
||||
See `start_link/4` for more information.
|
||||
"""
|
||||
@spec start(module, atom, [any], GenServer.options()) :: on_start
|
||||
def start(module, fun, args, options \\ []) do
|
||||
GenServer.start(Agent.Server, {module, fun, args}, options)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets an agent value via the given anonymous function.
|
||||
|
||||
The function `fun` is sent to the `agent` which invokes the function
|
||||
passing the agent state. The result of the function invocation is
|
||||
returned from this function.
|
||||
|
||||
`timeout` is an integer greater than zero which specifies how many
|
||||
milliseconds are allowed before the agent executes the function and returns
|
||||
the result value, or the atom `:infinity` to wait indefinitely. If no result
|
||||
is received within the specified time, the function call fails and the caller
|
||||
exits.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> {:ok, pid} = Agent.start_link(fn -> 42 end)
|
||||
iex> Agent.get(pid, fn state -> state end)
|
||||
42
|
||||
|
||||
"""
|
||||
@spec get(agent, (state -> a), timeout) :: a when a: var
|
||||
def get(agent, fun, timeout \\ 5000) when is_function(fun, 1) do
|
||||
GenServer.call(agent, {:get, fun}, timeout)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets an agent value via the given function.
|
||||
|
||||
Same as `get/3` but a module, function, and arguments are expected
|
||||
instead of an anonymous function. The state is added as first
|
||||
argument to the given list of arguments.
|
||||
"""
|
||||
@spec get(agent, module, atom, [term], timeout) :: any
|
||||
def get(agent, module, fun, args, timeout \\ 5000) do
|
||||
GenServer.call(agent, {:get, {module, fun, args}}, timeout)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets and updates the agent state in one operation via the given anonymous
|
||||
function.
|
||||
|
||||
The function `fun` is sent to the `agent` which invokes the function
|
||||
passing the agent state. The function must return a tuple with two
|
||||
elements, the first being the value to return (that is, the "get" value)
|
||||
and the second one being the new state of the agent.
|
||||
|
||||
`timeout` is an integer greater than zero which specifies how many
|
||||
milliseconds are allowed before the agent executes the function and returns
|
||||
the result value, or the atom `:infinity` to wait indefinitely. If no result
|
||||
is received within the specified time, the function call fails and the caller
|
||||
exits.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> {:ok, pid} = Agent.start_link(fn -> 42 end)
|
||||
iex> Agent.get_and_update(pid, fn state -> {state, state + 1} end)
|
||||
42
|
||||
iex> Agent.get(pid, fn state -> state end)
|
||||
43
|
||||
|
||||
"""
|
||||
@spec get_and_update(agent, (state -> {a, state}), timeout) :: a when a: var
|
||||
def get_and_update(agent, fun, timeout \\ 5000) when is_function(fun, 1) do
|
||||
GenServer.call(agent, {:get_and_update, fun}, timeout)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets and updates the agent state in one operation via the given function.
|
||||
|
||||
Same as `get_and_update/3` but a module, function, and arguments are expected
|
||||
instead of an anonymous function. The state is added as first
|
||||
argument to the given list of arguments.
|
||||
"""
|
||||
@spec get_and_update(agent, module, atom, [term], timeout) :: any
|
||||
def get_and_update(agent, module, fun, args, timeout \\ 5000) do
|
||||
GenServer.call(agent, {:get_and_update, {module, fun, args}}, timeout)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Updates the agent state via the given anonymous function.
|
||||
|
||||
The function `fun` is sent to the `agent` which invokes the function
|
||||
passing the agent state. The return value of `fun` becomes the new
|
||||
state of the agent.
|
||||
|
||||
This function always returns `:ok`.
|
||||
|
||||
`timeout` is an integer greater than zero which specifies how many
|
||||
milliseconds are allowed before the agent executes the function and returns
|
||||
the result value, or the atom `:infinity` to wait indefinitely. If no result
|
||||
is received within the specified time, the function call fails and the caller
|
||||
exits.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> {:ok, pid} = Agent.start_link(fn -> 42 end)
|
||||
iex> Agent.update(pid, fn state -> state + 1 end)
|
||||
:ok
|
||||
iex> Agent.get(pid, fn state -> state end)
|
||||
43
|
||||
|
||||
"""
|
||||
@spec update(agent, (state -> state), timeout) :: :ok
|
||||
def update(agent, fun, timeout \\ 5000) when is_function(fun, 1) do
|
||||
GenServer.call(agent, {:update, fun}, timeout)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Updates the agent state via the given function.
|
||||
|
||||
Same as `update/3` but a module, function, and arguments are expected
|
||||
instead of an anonymous function. The state is added as first
|
||||
argument to the given list of arguments.
|
||||
"""
|
||||
@spec update(agent, module, atom, [term], timeout) :: :ok
|
||||
def update(agent, module, fun, args, timeout \\ 5000) do
|
||||
GenServer.call(agent, {:update, {module, fun, args}}, timeout)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Performs a cast (*fire and forget*) operation on the agent state.
|
||||
|
||||
The function `fun` is sent to the `agent` which invokes the function
|
||||
passing the agent state. The return value of `fun` becomes the new
|
||||
state of the agent.
|
||||
|
||||
Note that `cast` returns `:ok` immediately, regardless of whether `agent` (or
|
||||
the node it should live on) exists.
|
||||
"""
|
||||
@spec cast(agent, (state -> state)) :: :ok
|
||||
def cast(agent, fun) when is_function(fun, 1) do
|
||||
GenServer.cast(agent, {:cast, fun})
|
||||
end
|
||||
|
||||
@doc """
|
||||
Performs a cast (*fire and forget*) operation on the agent state.
|
||||
|
||||
Same as `cast/2` but a module, function, and arguments are expected
|
||||
instead of an anonymous function. The state is added as first
|
||||
argument to the given list of arguments.
|
||||
"""
|
||||
@spec cast(agent, module, atom, [term]) :: :ok
|
||||
def cast(agent, module, fun, args) do
|
||||
GenServer.cast(agent, {:cast, {module, fun, args}})
|
||||
end
|
||||
|
||||
@doc """
|
||||
Synchronously stops the agent with the given `reason`.
|
||||
|
||||
It returns `:ok` if the agent terminates with the given
|
||||
reason. If the agent terminates with another reason, the call will
|
||||
exit.
|
||||
|
||||
This function keeps OTP semantics regarding error reporting.
|
||||
If the reason is any other than `:normal`, `:shutdown` or
|
||||
`{:shutdown, _}`, an error report will be logged.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> {:ok, pid} = Agent.start_link(fn -> 42 end)
|
||||
iex> Agent.stop(pid)
|
||||
:ok
|
||||
|
||||
"""
|
||||
@spec stop(agent, reason :: term, timeout) :: :ok
|
||||
def stop(agent, reason \\ :normal, timeout \\ :infinity) do
|
||||
GenServer.stop(agent, reason, timeout)
|
||||
end
|
||||
end
|
||||
@@ -1,51 +0,0 @@
|
||||
defmodule Agent.Server do
|
||||
@moduledoc false
|
||||
|
||||
use GenServer
|
||||
|
||||
def init(fun) do
|
||||
_ = initial_call(fun)
|
||||
{:ok, run(fun, [])}
|
||||
end
|
||||
|
||||
def handle_call({:get, fun}, _from, state) do
|
||||
{:reply, run(fun, [state]), state}
|
||||
end
|
||||
|
||||
def handle_call({:get_and_update, fun}, _from, state) do
|
||||
case run(fun, [state]) do
|
||||
{reply, state} -> {:reply, reply, state}
|
||||
other -> {:stop, {:bad_return_value, other}, state}
|
||||
end
|
||||
end
|
||||
|
||||
def handle_call({:update, fun}, _from, state) do
|
||||
{:reply, :ok, run(fun, [state])}
|
||||
end
|
||||
|
||||
def handle_cast({:cast, fun}, state) do
|
||||
{:noreply, run(fun, [state])}
|
||||
end
|
||||
|
||||
def code_change(_old, state, fun) do
|
||||
{:ok, run(fun, [state])}
|
||||
end
|
||||
|
||||
defp initial_call(mfa) do
|
||||
_ = Process.put(:"$initial_call", get_initial_call(mfa))
|
||||
:ok
|
||||
end
|
||||
|
||||
defp get_initial_call(fun) when is_function(fun, 0) do
|
||||
{:module, module} = Function.info(fun, :module)
|
||||
{:name, name} = Function.info(fun, :name)
|
||||
{module, name, 0}
|
||||
end
|
||||
|
||||
defp get_initial_call({mod, fun, args}) do
|
||||
{mod, fun, length(args)}
|
||||
end
|
||||
|
||||
defp run({m, f, a}, extra), do: apply(m, f, extra ++ a)
|
||||
defp run(fun, extra), do: apply(fun, extra)
|
||||
end
|
||||
@@ -1,830 +0,0 @@
|
||||
defmodule Application do
|
||||
@moduledoc """
|
||||
A module for working with applications and defining application callbacks.
|
||||
|
||||
Applications are the idiomatic way to package software in Erlang/OTP. To get
|
||||
the idea, they are similar to the "library" concept common in other
|
||||
programming languages, but with some additional characteristics.
|
||||
|
||||
An application is a component implementing some specific functionality, with a
|
||||
standardized directory structure, configuration, and lifecycle. Applications
|
||||
are *loaded*, *started*, and *stopped*.
|
||||
|
||||
## The application resource file
|
||||
|
||||
Applications are specified in their [*resource
|
||||
file*](http://erlang.org/doc/man/app.html), which is a file called `APP.app`,
|
||||
where `APP` is the application name. For example, the application resource
|
||||
file of the OTP application `ex_unit` is called `ex_unit.app`.
|
||||
|
||||
You'll find the resource file of an application in its `ebin` directory, it is
|
||||
generated automatically by Mix. Some of its keys are taken from the keyword
|
||||
lists returned by the `project/0` and `application/0` functions defined in
|
||||
`mix.exs`, and others are generated by Mix itself.
|
||||
|
||||
You can learn more about the generation of application resource files in the
|
||||
documentation of `Mix.Tasks.Compile.App`, available as well by running
|
||||
`mix help compile.app`.
|
||||
|
||||
## The application environment
|
||||
|
||||
The key `env` of an application resource file has a list of tuples that map
|
||||
atoms to terms, and its contents are known as the application *environment*.
|
||||
Note that this environment is unrelated to the operating system environment.
|
||||
|
||||
By default, the environment of an application is an empty list. In a Mix
|
||||
project you can set that key in `application/0`:
|
||||
|
||||
def application do
|
||||
[env: [redis_host: "localhost"]]
|
||||
end
|
||||
|
||||
and the generated application resource file is going to have it included.
|
||||
|
||||
The environment is available after loading the application, which is a process
|
||||
explained later:
|
||||
|
||||
Application.load(:APP_NAME)
|
||||
#=> :ok
|
||||
|
||||
Application.get_env(:APP_NAME, :redis_host)
|
||||
#=> "localhost"
|
||||
|
||||
In Mix projects, the environment of the application and its dependencies can
|
||||
be overridden via the `config/config.exs` file. If you start the application
|
||||
with Mix, that configuration is available at compile time, and at runtime too,
|
||||
but take into account it is not included in the generated application resource
|
||||
file, and it is not available if you start the application without Mix.
|
||||
|
||||
For example, someone using your application can override its `:redis_host`
|
||||
environment variable as follows:
|
||||
|
||||
config :APP_NAME, redis_host: "redis.local"
|
||||
|
||||
The function `put_env/3` allows dynamic configuration of the application
|
||||
environment, but as a rule of thumb each application is responsible for its
|
||||
own environment. Please do not use the functions in this module for directly
|
||||
accessing or modifying the environment of other applications.
|
||||
|
||||
The application environment can be overridden via the `-config` option of
|
||||
`erl`, as well as command-line options, as we are going to see below.
|
||||
|
||||
## The application callback module
|
||||
|
||||
The `mod` key of an application resource file configures an application
|
||||
callback module and start argument:
|
||||
|
||||
def application do
|
||||
[mod: {MyApp, []}]
|
||||
end
|
||||
|
||||
This key is optional, only needed for applications that start a supervision tree.
|
||||
|
||||
The `MyApp` module given to `:mod` needs to implement the `Application` behaviour.
|
||||
This can be done by putting `use Application` in that module and implementing the
|
||||
`c:start/2` callback, for example:
|
||||
|
||||
defmodule MyApp do
|
||||
use Application
|
||||
|
||||
def start(_type, _args) do
|
||||
children = []
|
||||
Supervisor.start_link(children, strategy: :one_for_one)
|
||||
end
|
||||
end
|
||||
|
||||
The `c:start/2` callback has to spawn and link a supervisor and return `{:ok,
|
||||
pid}` or `{:ok, pid, state}`, where `pid` is the PID of the supervisor, and
|
||||
`state` is an optional application state. `args` is the second element of the
|
||||
tuple given to the `:mod` option.
|
||||
|
||||
The `type` argument passed to `c:start/2` is usually `:normal` unless in a
|
||||
distributed setup where application takeovers and failovers are configured.
|
||||
Distributed applications are beyond the scope of this documentation.
|
||||
|
||||
When an application is shutting down, its `c:stop/1` callback is called after
|
||||
the supervision tree has been stopped by the runtime. This callback allows the
|
||||
application to do any final cleanup. The argument is the state returned by
|
||||
`c:start/2`, if it did, or `[]` otherwise. The return value of `c:stop/1` is
|
||||
ignored.
|
||||
|
||||
By using `Application`, modules get a default implementation of `c:stop/1`
|
||||
that ignores its argument and returns `:ok`, but it can be overridden.
|
||||
|
||||
Application callback modules may also implement the optional callback
|
||||
`c:prep_stop/1`. If present, `c:prep_stop/1` is invoked before the supervision
|
||||
tree is terminated. Its argument is the state returned by `c:start/2`, if it did,
|
||||
or `[]` otherwise, and its return value is passed to `c:stop/1`.
|
||||
|
||||
## The application lifecycle
|
||||
|
||||
### Loading applications
|
||||
|
||||
Applications are *loaded*, which means that the runtime finds and processes
|
||||
their resource files:
|
||||
|
||||
Application.load(:ex_unit)
|
||||
#=> :ok
|
||||
|
||||
If an application has included applications, they are also loaded. And the
|
||||
procedure recurses if they in turn have included applications. Included
|
||||
applications are unrelated to applications in Mix umbrella projects, they are
|
||||
an Erlang/OTP concept that has to do with coordinated starts.
|
||||
|
||||
When an application is loaded, the environment specified in its resource file
|
||||
is merged with any overrides from config files passed to `erl` via the
|
||||
`-config` option. It is worth highlighting that releases pass `sys.config`
|
||||
this way. The resulting environment can still be overridden again via specific
|
||||
`-Application` options passed to `erl`.
|
||||
|
||||
Loading an application *does not* load its modules.
|
||||
|
||||
In practice, you rarely load applications by hand because that is part of the
|
||||
start process, explained next.
|
||||
|
||||
### Starting applications
|
||||
|
||||
Applications are also *started*:
|
||||
|
||||
Application.start(:ex_unit)
|
||||
#=> :ok
|
||||
|
||||
Once your application is compiled, running your system is a matter of starting
|
||||
your current application and its dependencies. Differently from other languages,
|
||||
Elixir does not have a `main` procedure that is responsible for starting your
|
||||
system. Instead, you start one or more applications, each with their own
|
||||
initialization and termination logic.
|
||||
|
||||
When an application is started, the runtime loads it if it hasn't been loaded
|
||||
yet (in the technical sense described above). Then, it checks if the
|
||||
dependencies listed in the `applications` key of the resource file are already
|
||||
started. Having at least one dependency not started is an error condition, but
|
||||
when you start an application with `mix run`, Mix takes care of starting all
|
||||
the dependencies for you, so in practice you don't need to worry about it
|
||||
unless you are starting applications manually with the API provided by this
|
||||
module.
|
||||
|
||||
If the application does not have a callback module configured, starting is
|
||||
done at this point. Otherwise, its `c:start/2` callback if invoked. The PID of
|
||||
the top-level supervisor returned by this function is stored by the runtime
|
||||
for later use, and the returned application state is saved too, if any.
|
||||
|
||||
### Stopping applications
|
||||
|
||||
Started applications are, finally, *stopped*:
|
||||
|
||||
Application.stop(:ex_unit)
|
||||
#=> :ok
|
||||
|
||||
Stopping an application without a callback module is defined, but except for
|
||||
some system tracing, it is in practice a no-op.
|
||||
|
||||
Stopping an application with a callback module has three steps:
|
||||
|
||||
1. If present, invoke the optional callback `c:prep_stop/1`.
|
||||
2. Terminate the top-level supervisor.
|
||||
3. Invoke the required callback `c:stop/1`.
|
||||
|
||||
The arguments passed to the callbacks are related to the state optionally
|
||||
returned by `c:start/2`, and are documented in the section about the callback
|
||||
module above.
|
||||
|
||||
It is important to highlight that step 2 is a blocking one. Termination of a
|
||||
supervisor triggers a recursive chain of children terminations, therefore
|
||||
orderly shutting down all descendant processes. The `c:stop/1` callback is
|
||||
invoked only after termination of the whole supervision tree.
|
||||
|
||||
Shutting down a live system cleanly can be done by calling `System.stop/1`. It
|
||||
will shut down every application in the opposite order they had been started.
|
||||
|
||||
By default, a SIGTERM from the operating system will automatically translate to
|
||||
`System.stop/0`. You can also have more explicit control over operating system
|
||||
signals via the `:os.set_signal/2` function.
|
||||
|
||||
## Tooling
|
||||
|
||||
The Mix build tool can also be used to start your applications. For example,
|
||||
`mix test` automatically starts your application dependencies and your application
|
||||
itself before your test runs. `mix run --no-halt` boots your current project and
|
||||
can be used to start a long running system. See `mix help run`.
|
||||
|
||||
Developers can also use tools like [Distillery](https://github.com/bitwalker/distillery)
|
||||
that build **releases**. Releases are able to package all of your source code
|
||||
as well as the Erlang VM into a single directory. Releases also give you explicit
|
||||
control over how each application is started and in which order. They also provide
|
||||
a more streamlined mechanism for starting and stopping systems, debugging, logging,
|
||||
as well as system monitoring.
|
||||
|
||||
Finally, Elixir provides tools such as escripts and archives, which are
|
||||
different mechanisms for packaging your application. Those are typically used
|
||||
when tools must be shared between developers and not as deployment options.
|
||||
See `mix help archive.build` and `mix help escript.build` for more detail.
|
||||
|
||||
## Further information
|
||||
|
||||
For further details on applications please check the documentation of the
|
||||
[`application`](http://www.erlang.org/doc/man/application.html) Erlang module,
|
||||
and the
|
||||
[Applications](http://www.erlang.org/doc/design_principles/applications.html)
|
||||
section of the [OTP Design Principles User's
|
||||
Guide](http://erlang.org/doc/design_principles/users_guide.html).
|
||||
"""
|
||||
|
||||
@doc """
|
||||
Called when an application is started.
|
||||
|
||||
This function is called when an application is started using
|
||||
`Application.start/2` (and functions on top of that, such as
|
||||
`Application.ensure_started/2`). This function should start the top-level
|
||||
process of the application (which should be the top supervisor of the
|
||||
application's supervision tree if the application follows the OTP design
|
||||
principles around supervision).
|
||||
|
||||
`start_type` defines how the application is started:
|
||||
|
||||
* `:normal` - used if the startup is a normal startup or if the application
|
||||
is distributed and is started on the current node because of a failover
|
||||
from another node and the application specification key `:start_phases`
|
||||
is `:undefined`.
|
||||
* `{:takeover, node}` - used if the application is distributed and is
|
||||
started on the current node because of a failover on the node `node`.
|
||||
* `{:failover, node}` - used if the application is distributed and is
|
||||
started on the current node because of a failover on node `node`, and the
|
||||
application specification key `:start_phases` is not `:undefined`.
|
||||
|
||||
`start_args` are the arguments passed to the application in the `:mod`
|
||||
specification key (e.g., `mod: {MyApp, [:my_args]}`).
|
||||
|
||||
This function should either return `{:ok, pid}` or `{:ok, pid, state}` if
|
||||
startup is successful. `pid` should be the PID of the top supervisor. `state`
|
||||
can be an arbitrary term, and if omitted will default to `[]`; if the
|
||||
application is later stopped, `state` is passed to the `stop/1` callback (see
|
||||
the documentation for the `c:stop/1` callback for more information).
|
||||
|
||||
`use Application` provides no default implementation for the `start/2`
|
||||
callback.
|
||||
"""
|
||||
@callback start(start_type, start_args :: term) ::
|
||||
{:ok, pid}
|
||||
| {:ok, pid, state}
|
||||
| {:error, reason :: term}
|
||||
|
||||
@doc """
|
||||
Called before stopping the application.
|
||||
|
||||
This function is called before the top-level supervisor is terminated. It
|
||||
receives the state returned by `c:start/2`, if it did, or `[]` otherwise.
|
||||
The return value is later passed to `c:stop/1`.
|
||||
"""
|
||||
@callback prep_stop(state) :: state
|
||||
|
||||
@doc """
|
||||
Called after an application has been stopped.
|
||||
|
||||
This function is called after an application has been stopped, i.e., after its
|
||||
supervision tree has been stopped. It should do the opposite of what the
|
||||
`c:start/2` callback did, and should perform any necessary cleanup. The return
|
||||
value of this callback is ignored.
|
||||
|
||||
`state` is the state returned by `c:start/2`, if it did, or `[]` otherwise.
|
||||
If the optional callback `c:prep_stop/1` is present, `state` is its return
|
||||
value instead.
|
||||
|
||||
`use Application` defines a default implementation of this function which does
|
||||
nothing and just returns `:ok`.
|
||||
"""
|
||||
@callback stop(state) :: term
|
||||
|
||||
@doc """
|
||||
Starts an application in synchronous phases.
|
||||
|
||||
This function is called after `start/2` finishes but before
|
||||
`Application.start/2` returns. It will be called once for every start phase
|
||||
defined in the application's (and any included applications') specification,
|
||||
in the order they are listed in.
|
||||
"""
|
||||
@callback start_phase(phase :: term, start_type, phase_args :: term) ::
|
||||
:ok | {:error, reason :: term}
|
||||
|
||||
@doc """
|
||||
Callback invoked after code upgrade, if the application environment
|
||||
has changed.
|
||||
|
||||
`changed` is a keyword list of keys and their changed values in the
|
||||
application environment. `new` is a keyword list with all new keys
|
||||
and their values. `removed` is a list with all removed keys.
|
||||
"""
|
||||
@callback config_change(changed, new, removed) :: :ok
|
||||
when changed: keyword, new: keyword, removed: [atom]
|
||||
|
||||
@optional_callbacks start_phase: 3, prep_stop: 1, config_change: 3
|
||||
|
||||
@doc false
|
||||
defmacro __using__(_) do
|
||||
quote location: :keep do
|
||||
@behaviour Application
|
||||
|
||||
@doc false
|
||||
def stop(_state) do
|
||||
:ok
|
||||
end
|
||||
|
||||
defoverridable Application
|
||||
end
|
||||
end
|
||||
|
||||
@application_keys [
|
||||
:description,
|
||||
:id,
|
||||
:vsn,
|
||||
:modules,
|
||||
:maxP,
|
||||
:maxT,
|
||||
:registered,
|
||||
:included_applications,
|
||||
:applications,
|
||||
:mod,
|
||||
:start_phases
|
||||
]
|
||||
|
||||
application_key_specs = Enum.reduce(@application_keys, &{:|, [], [&1, &2]})
|
||||
|
||||
@type app :: atom
|
||||
@type key :: atom
|
||||
@type application_key :: unquote(application_key_specs)
|
||||
@type value :: term
|
||||
@type state :: term
|
||||
@type start_type :: :normal | {:takeover, node} | {:failover, node}
|
||||
@type restart_type :: :permanent | :transient | :temporary
|
||||
|
||||
@doc """
|
||||
Returns the spec for `app`.
|
||||
|
||||
The following keys are returned:
|
||||
|
||||
* #{Enum.map_join(@application_keys, "\n * ", &"`#{inspect(&1)}`")}
|
||||
|
||||
Note the environment is not returned as it can be accessed via
|
||||
`fetch_env/2`. Returns `nil` if the application is not loaded.
|
||||
"""
|
||||
@spec spec(app) :: [{application_key, value}] | nil
|
||||
def spec(app) when is_atom(app) do
|
||||
case :application.get_all_key(app) do
|
||||
{:ok, info} -> :lists.keydelete(:env, 1, info)
|
||||
:undefined -> nil
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the value for `key` in `app`'s specification.
|
||||
|
||||
See `spec/1` for the supported keys. If the given
|
||||
specification parameter does not exist, this function
|
||||
will raise. Returns `nil` if the application is not loaded.
|
||||
"""
|
||||
@spec spec(app, application_key) :: value | nil
|
||||
def spec(app, key) when is_atom(app) and key in @application_keys do
|
||||
case :application.get_key(app, key) do
|
||||
{:ok, value} -> value
|
||||
:undefined -> nil
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets the application for the given module.
|
||||
|
||||
The application is located by analyzing the spec
|
||||
of all loaded applications. Returns `nil` if
|
||||
the module is not listed in any application spec.
|
||||
"""
|
||||
@spec get_application(atom) :: atom | nil
|
||||
def get_application(module) when is_atom(module) do
|
||||
case :application.get_application(module) do
|
||||
{:ok, app} -> app
|
||||
:undefined -> nil
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns all key-value pairs for `app`.
|
||||
"""
|
||||
@spec get_all_env(app) :: [{key, value}]
|
||||
def get_all_env(app) when is_atom(app) do
|
||||
:application.get_all_env(app)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the value for `key` in `app`'s environment.
|
||||
|
||||
If the configuration parameter does not exist, the function returns the
|
||||
`default` value.
|
||||
|
||||
## Examples
|
||||
|
||||
`get_env/3` is commonly used to read the configuration of your OTP applications.
|
||||
Since Mix configurations are commonly used to configure applications, we will use
|
||||
this as a point of illustration.
|
||||
|
||||
Consider a new application `:my_app`. `:my_app` contains a database engine which
|
||||
supports a pool of databases. The database engine needs to know the configuration for
|
||||
each of those databases, and that configuration is supplied by key-value pairs in
|
||||
environment of `:my_app`.
|
||||
|
||||
config :my_app, Databases.RepoOne,
|
||||
# A database configuration
|
||||
ip: "localhost",
|
||||
port: 5433
|
||||
|
||||
config :my_app, Databases.RepoTwo,
|
||||
# Another database configuration (for the same OTP app)
|
||||
ip: "localhost",
|
||||
port: 20717
|
||||
|
||||
config :my_app, my_app_databases: [Databases.RepoOne, Databases.RepoTwo]
|
||||
|
||||
Our database engine used by `:my_app` needs to know what databases exist, and
|
||||
what the database configurations are. The database engine can make a call to
|
||||
`get_env(:my_app, :my_app_databases)` to retrieve the list of databases (specified
|
||||
by module names). Our database engine can then traverse each repository in the
|
||||
list and then call `get_env(:my_app, Databases.RepoOne)` and so forth to retrieve
|
||||
the configuration of each one.
|
||||
|
||||
**Important:** if you are writing a library to be used by other developers,
|
||||
it is generally recommended to avoid the application environment, as the
|
||||
application environment is effectively a global storage. For more information,
|
||||
read our [library guidelines](library-guidelines.html).
|
||||
"""
|
||||
@spec get_env(app, key, value) :: value
|
||||
def get_env(app, key, default \\ nil) when is_atom(app) do
|
||||
:application.get_env(app, key, default)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the value for `key` in `app`'s environment in a tuple.
|
||||
|
||||
If the configuration parameter does not exist, the function returns `:error`.
|
||||
"""
|
||||
@spec fetch_env(app, key) :: {:ok, value} | :error
|
||||
def fetch_env(app, key) when is_atom(app) do
|
||||
case :application.get_env(app, key) do
|
||||
{:ok, value} -> {:ok, value}
|
||||
:undefined -> :error
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the value for `key` in `app`'s environment.
|
||||
|
||||
If the configuration parameter does not exist, raises `ArgumentError`.
|
||||
"""
|
||||
@spec fetch_env!(app, key) :: value
|
||||
def fetch_env!(app, key) when is_atom(app) do
|
||||
case fetch_env(app, key) do
|
||||
{:ok, value} ->
|
||||
value
|
||||
|
||||
:error ->
|
||||
vsn = :application.get_key(app, :vsn)
|
||||
app = inspect(app)
|
||||
key = inspect(key)
|
||||
|
||||
case vsn do
|
||||
{:ok, _} ->
|
||||
raise ArgumentError,
|
||||
"could not fetch application environment #{key} for application #{app} " <>
|
||||
"because configuration #{key} was not set"
|
||||
|
||||
:undefined ->
|
||||
raise ArgumentError,
|
||||
"could not fetch application environment #{key} for application #{app} " <>
|
||||
"because the application was not loaded/started. If your application " <>
|
||||
"depends on #{app} at runtime, make sure to load/start it or list it " <>
|
||||
"under :extra_applications in your mix.exs file"
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Puts the `value` in `key` for the given `app`.
|
||||
|
||||
## Options
|
||||
|
||||
* `:timeout` - the timeout for the change (defaults to `5_000` milliseconds)
|
||||
* `:persistent` - persists the given value on application load and reloads
|
||||
|
||||
If `put_env/4` is called before the application is loaded, the application
|
||||
environment values specified in the `.app` file will override the ones
|
||||
previously set.
|
||||
|
||||
The `:persistent` option can be set to `true` when there is a need to guarantee
|
||||
parameters set with this function will not be overridden by the ones defined
|
||||
in the application resource file on load. This means persistent values will
|
||||
stick after the application is loaded and also on application reload.
|
||||
"""
|
||||
@spec put_env(app, key, value, timeout: timeout, persistent: boolean) :: :ok
|
||||
def put_env(app, key, value, opts \\ []) when is_atom(app) do
|
||||
:application.set_env(app, key, value, opts)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Puts the environment for multiple apps at the same time.
|
||||
|
||||
The given config should not:
|
||||
|
||||
* have the same application listed more than once
|
||||
* have the same key inside the same application listed more than once
|
||||
|
||||
If those conditions are not met, the behaviour is undefined
|
||||
(on Erlang/OTP 21 and earlier) or will raise (on Erlang/OTP 22
|
||||
and later).
|
||||
|
||||
It receives the same options as `put_env/4`. Returns `:ok`.
|
||||
"""
|
||||
@spec put_all_env([{app, [{key, value}]}], timeout: timeout, persistent: boolean) :: :ok
|
||||
def put_all_env(config, opts \\ []) when is_list(config) and is_list(opts) do
|
||||
# TODO: Remove function exported? check when we require Erlang/OTP 22+
|
||||
if function_exported?(:application, :set_env, 2) do
|
||||
:application.set_env(config, opts)
|
||||
else
|
||||
for app_keyword <- config,
|
||||
{app, keyword} = app_keyword,
|
||||
key_value <- keyword,
|
||||
{key, value} = key_value do
|
||||
:application.set_env(app, key, value, opts)
|
||||
end
|
||||
|
||||
:ok
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Deletes the `key` from the given `app` environment.
|
||||
|
||||
It receives the same options as `put_env/4`. Returns `:ok`.
|
||||
"""
|
||||
@spec delete_env(app, key, timeout: timeout, persistent: boolean) :: :ok
|
||||
def delete_env(app, key, opts \\ []) when is_atom(app) do
|
||||
:application.unset_env(app, key, opts)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Ensures the given `app` is started.
|
||||
|
||||
Same as `start/2` but returns `:ok` if the application was already
|
||||
started. This is useful in scripts and in test setup, where test
|
||||
applications need to be explicitly started:
|
||||
|
||||
:ok = Application.ensure_started(:my_test_dep)
|
||||
|
||||
"""
|
||||
@spec ensure_started(app, restart_type) :: :ok | {:error, term}
|
||||
def ensure_started(app, type \\ :temporary) when is_atom(app) do
|
||||
:application.ensure_started(app, type)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Ensures the given `app` and its applications are started.
|
||||
|
||||
Same as `start/2` but also starts the applications listed under
|
||||
`:applications` in the `.app` file in case they were not previously
|
||||
started.
|
||||
"""
|
||||
@spec ensure_all_started(app, restart_type) :: {:ok, [app]} | {:error, {app, term}}
|
||||
def ensure_all_started(app, type \\ :temporary) when is_atom(app) do
|
||||
:application.ensure_all_started(app, type)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Starts the given `app`.
|
||||
|
||||
If the `app` is not loaded, the application will first be loaded using `load/1`.
|
||||
Any included application, defined in the `:included_applications` key of the
|
||||
`.app` file will also be loaded, but they won't be started.
|
||||
|
||||
Furthermore, all applications listed in the `:applications` key must be explicitly
|
||||
started before this application is. If not, `{:error, {:not_started, app}}` is
|
||||
returned, where `app` is the name of the missing application.
|
||||
|
||||
In case you want to automatically load **and start** all of `app`'s dependencies,
|
||||
see `ensure_all_started/2`.
|
||||
|
||||
The `type` argument specifies the type of the application:
|
||||
|
||||
* `:permanent` - if `app` terminates, all other applications and the entire
|
||||
node are also terminated.
|
||||
|
||||
* `:transient` - if `app` terminates with `:normal` reason, it is reported
|
||||
but no other applications are terminated. If a transient application
|
||||
terminates abnormally, all other applications and the entire node are
|
||||
also terminated.
|
||||
|
||||
* `:temporary` - if `app` terminates, it is reported but no other
|
||||
applications are terminated (the default).
|
||||
|
||||
Note that it is always possible to stop an application explicitly by calling
|
||||
`stop/1`. Regardless of the type of the application, no other applications will
|
||||
be affected.
|
||||
|
||||
Note also that the `:transient` type is of little practical use, since when a
|
||||
supervision tree terminates, the reason is set to `:shutdown`, not `:normal`.
|
||||
"""
|
||||
@spec start(app, restart_type) :: :ok | {:error, term}
|
||||
def start(app, type \\ :temporary) when is_atom(app) do
|
||||
:application.start(app, type)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Stops the given `app`.
|
||||
|
||||
When stopped, the application is still loaded.
|
||||
"""
|
||||
@spec stop(app) :: :ok | {:error, term}
|
||||
def stop(app) when is_atom(app) do
|
||||
:application.stop(app)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Loads the given `app`.
|
||||
|
||||
In order to be loaded, an `.app` file must be in the load paths.
|
||||
All `:included_applications` will also be loaded.
|
||||
|
||||
Loading the application does not start it nor load its modules, but
|
||||
it does load its environment.
|
||||
"""
|
||||
@spec load(app) :: :ok | {:error, term}
|
||||
def load(app) when is_atom(app) do
|
||||
:application.load(app)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Unloads the given `app`.
|
||||
|
||||
It will also unload all `:included_applications`.
|
||||
Note that the function does not purge the application modules.
|
||||
"""
|
||||
@spec unload(app) :: :ok | {:error, term}
|
||||
def unload(app) when is_atom(app) do
|
||||
:application.unload(app)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets the directory for app.
|
||||
|
||||
This information is returned based on the code path. Here is an
|
||||
example:
|
||||
|
||||
File.mkdir_p!("foo/ebin")
|
||||
Code.prepend_path("foo/ebin")
|
||||
Application.app_dir(:foo)
|
||||
#=> "foo"
|
||||
|
||||
Even though the directory is empty and there is no `.app` file
|
||||
it is considered the application directory based on the name
|
||||
"foo/ebin". The name may contain a dash `-` which is considered
|
||||
to be the app version and it is removed for the lookup purposes:
|
||||
|
||||
File.mkdir_p!("bar-123/ebin")
|
||||
Code.prepend_path("bar-123/ebin")
|
||||
Application.app_dir(:bar)
|
||||
#=> "bar-123"
|
||||
|
||||
For more information on code paths, check the `Code` module in
|
||||
Elixir and also Erlang's [`:code` module](http://www.erlang.org/doc/man/code.html).
|
||||
"""
|
||||
@spec app_dir(app) :: String.t()
|
||||
def app_dir(app) when is_atom(app) do
|
||||
case :code.lib_dir(app) do
|
||||
lib when is_list(lib) -> IO.chardata_to_string(lib)
|
||||
{:error, :bad_name} -> raise ArgumentError, "unknown application: #{inspect(app)}"
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the given path inside `app_dir/1`.
|
||||
|
||||
If `path` is a string, then it will be used as the path inside `app_dir/1`. If
|
||||
`path` is a list of strings, it will be joined (see `Path.join/1`) and the result
|
||||
will be used as the path inside `app_dir/1`.
|
||||
|
||||
## Examples
|
||||
|
||||
File.mkdir_p!("foo/ebin")
|
||||
Code.prepend_path("foo/ebin")
|
||||
|
||||
Application.app_dir(:foo, "my_path")
|
||||
#=> "foo/my_path"
|
||||
|
||||
Application.app_dir(:foo, ["my", "nested", "path"])
|
||||
#=> "foo/my/nested/path"
|
||||
|
||||
"""
|
||||
@spec app_dir(app, String.t() | [String.t()]) :: String.t()
|
||||
def app_dir(app, path)
|
||||
|
||||
def app_dir(app, path) when is_atom(app) and is_binary(path) do
|
||||
Path.join(app_dir(app), path)
|
||||
end
|
||||
|
||||
def app_dir(app, path) when is_atom(app) and is_list(path) do
|
||||
Path.join([app_dir(app) | path])
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns a list with information about the applications which are currently running.
|
||||
"""
|
||||
@spec started_applications(timeout) :: [{app, description :: charlist(), vsn :: charlist()}]
|
||||
def started_applications(timeout \\ 5000) do
|
||||
:application.which_applications(timeout)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns a list with information about the applications which have been loaded.
|
||||
"""
|
||||
@spec loaded_applications :: [{app, description :: charlist(), vsn :: charlist()}]
|
||||
def loaded_applications do
|
||||
:application.loaded_applications()
|
||||
end
|
||||
|
||||
@doc """
|
||||
Formats the error reason returned by `start/2`,
|
||||
`ensure_started/2`, `stop/1`, `load/1` and `unload/1`,
|
||||
returns a string.
|
||||
"""
|
||||
@spec format_error(any) :: String.t()
|
||||
def format_error(reason) do
|
||||
try do
|
||||
do_format_error(reason)
|
||||
catch
|
||||
# A user could create an error that looks like a built-in one
|
||||
# causing an error.
|
||||
:error, _ ->
|
||||
inspect(reason)
|
||||
end
|
||||
end
|
||||
|
||||
# exit(:normal) call is special cased, undo the special case.
|
||||
defp do_format_error({{:EXIT, :normal}, {mod, :start, args}}) do
|
||||
Exception.format_exit({:normal, {mod, :start, args}})
|
||||
end
|
||||
|
||||
# {:error, reason} return value
|
||||
defp do_format_error({reason, {mod, :start, args}}) do
|
||||
Exception.format_mfa(mod, :start, args) <>
|
||||
" returned an error: " <> Exception.format_exit(reason)
|
||||
end
|
||||
|
||||
# error or exit(reason) call, use exit reason as reason.
|
||||
defp do_format_error({:bad_return, {{mod, :start, args}, {:EXIT, reason}}}) do
|
||||
Exception.format_exit({reason, {mod, :start, args}})
|
||||
end
|
||||
|
||||
# bad return value
|
||||
defp do_format_error({:bad_return, {{mod, :start, args}, return}}) do
|
||||
Exception.format_mfa(mod, :start, args) <> " returned a bad value: " <> inspect(return)
|
||||
end
|
||||
|
||||
defp do_format_error({:already_started, app}) when is_atom(app) do
|
||||
"already started application #{app}"
|
||||
end
|
||||
|
||||
defp do_format_error({:not_started, app}) when is_atom(app) do
|
||||
"not started application #{app}"
|
||||
end
|
||||
|
||||
defp do_format_error({:bad_application, app}) do
|
||||
"bad application: #{inspect(app)}"
|
||||
end
|
||||
|
||||
defp do_format_error({:already_loaded, app}) when is_atom(app) do
|
||||
"already loaded application #{app}"
|
||||
end
|
||||
|
||||
defp do_format_error({:not_loaded, app}) when is_atom(app) do
|
||||
"not loaded application #{app}"
|
||||
end
|
||||
|
||||
defp do_format_error({:invalid_restart_type, restart}) do
|
||||
"invalid application restart type: #{inspect(restart)}"
|
||||
end
|
||||
|
||||
defp do_format_error({:invalid_name, name}) do
|
||||
"invalid application name: #{inspect(name)}"
|
||||
end
|
||||
|
||||
defp do_format_error({:invalid_options, opts}) do
|
||||
"invalid application options: #{inspect(opts)}"
|
||||
end
|
||||
|
||||
defp do_format_error({:badstartspec, spec}) do
|
||||
"bad application start specs: #{inspect(spec)}"
|
||||
end
|
||||
|
||||
defp do_format_error({'no such file or directory', file}) do
|
||||
"could not find application file: #{file}"
|
||||
end
|
||||
|
||||
defp do_format_error(reason) do
|
||||
Exception.format_exit(reason)
|
||||
end
|
||||
end
|
||||
@@ -1,44 +0,0 @@
|
||||
defmodule Atom do
|
||||
@moduledoc """
|
||||
Convenience functions for working with atoms.
|
||||
|
||||
See also `Kernel.is_atom/1`.
|
||||
"""
|
||||
|
||||
@doc """
|
||||
Converts an atom to a string.
|
||||
|
||||
Inlined by the compiler.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Atom.to_string(:foo)
|
||||
"foo"
|
||||
|
||||
"""
|
||||
@spec to_string(atom) :: String.t()
|
||||
def to_string(atom) do
|
||||
:erlang.atom_to_binary(atom, :utf8)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts an atom to a charlist.
|
||||
|
||||
Inlined by the compiler.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Atom.to_charlist(:"An atom")
|
||||
'An atom'
|
||||
|
||||
"""
|
||||
@spec to_charlist(atom) :: charlist
|
||||
def to_charlist(atom) do
|
||||
:erlang.atom_to_list(atom)
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated "Use Atom.to_charlist/1 instead"
|
||||
@spec to_char_list(atom) :: charlist
|
||||
def to_char_list(atom), do: Atom.to_charlist(atom)
|
||||
end
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,121 +0,0 @@
|
||||
defmodule Behaviour do
|
||||
@moduledoc """
|
||||
Mechanism for handling behaviours.
|
||||
|
||||
This module is deprecated. Instead of `defcallback/1` and
|
||||
`defmacrocallback/1`, the `@callback` and `@macrocallback`
|
||||
module attributes can be used (respectively). See the
|
||||
documentation for `Module` for more information on these
|
||||
attributes.
|
||||
|
||||
Instead of `MyModule.__behaviour__(:callbacks)`,
|
||||
`MyModule.behaviour_info(:callbacks)` can be used.
|
||||
"""
|
||||
|
||||
@moduledoc deprecated: "Use @callback and @macrocallback attributes instead"
|
||||
|
||||
@doc """
|
||||
Defines a function callback according to the given type specification.
|
||||
"""
|
||||
defmacro defcallback(spec) do
|
||||
do_defcallback(:def, split_spec(spec, quote(do: term)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Defines a macro callback according to the given type specification.
|
||||
"""
|
||||
defmacro defmacrocallback(spec) do
|
||||
do_defcallback(:defmacro, split_spec(spec, quote(do: Macro.t())))
|
||||
end
|
||||
|
||||
defp split_spec({:when, _, [{:"::", _, [spec, return]}, guard]}, _default) do
|
||||
{spec, return, guard}
|
||||
end
|
||||
|
||||
defp split_spec({:when, _, [spec, guard]}, default) do
|
||||
{spec, default, guard}
|
||||
end
|
||||
|
||||
defp split_spec({:"::", _, [spec, return]}, _default) do
|
||||
{spec, return, []}
|
||||
end
|
||||
|
||||
defp split_spec(spec, default) do
|
||||
{spec, default, []}
|
||||
end
|
||||
|
||||
defp do_defcallback(kind, {spec, return, guards}) do
|
||||
case Macro.decompose_call(spec) do
|
||||
{name, args} ->
|
||||
do_callback(kind, name, args, return, guards)
|
||||
|
||||
_ ->
|
||||
raise ArgumentError, "invalid syntax in #{kind}callback #{Macro.to_string(spec)}"
|
||||
end
|
||||
end
|
||||
|
||||
defp do_callback(kind, name, args, return, guards) do
|
||||
fun = fn
|
||||
{:"::", _, [left, right]} ->
|
||||
ensure_not_default(left)
|
||||
ensure_not_default(right)
|
||||
left
|
||||
|
||||
other ->
|
||||
ensure_not_default(other)
|
||||
other
|
||||
end
|
||||
|
||||
:lists.foreach(fun, args)
|
||||
|
||||
spec =
|
||||
quote do
|
||||
unquote(name)(unquote_splicing(args)) :: unquote(return) when unquote(guards)
|
||||
end
|
||||
|
||||
case kind do
|
||||
:def -> quote(do: @callback(unquote(spec)))
|
||||
:defmacro -> quote(do: @macrocallback(unquote(spec)))
|
||||
end
|
||||
end
|
||||
|
||||
defp ensure_not_default({:\\, _, [_, _]}) do
|
||||
raise ArgumentError, "default arguments \\\\ not supported in defcallback/defmacrocallback"
|
||||
end
|
||||
|
||||
defp ensure_not_default(_), do: :ok
|
||||
|
||||
@doc false
|
||||
defmacro __using__(_) do
|
||||
quote do
|
||||
warning =
|
||||
"the Behaviour module is deprecated. Instead of using this module, " <>
|
||||
"use the @callback and @macrocallback module attributes. See the " <>
|
||||
"documentation for Module for more information on these attributes"
|
||||
|
||||
IO.warn(warning)
|
||||
|
||||
@doc false
|
||||
def __behaviour__(:callbacks) do
|
||||
__MODULE__.behaviour_info(:callbacks)
|
||||
end
|
||||
|
||||
def __behaviour__(:docs) do
|
||||
{:docs_v1, _, :elixir, _, _, _, docs} = Code.fetch_docs(__MODULE__)
|
||||
|
||||
for {{kind, name, arity}, line, _, doc, _} <- docs, kind in [:callback, :macrocallback] do
|
||||
case kind do
|
||||
:callback -> {{name, arity}, line, :def, __behaviour__doc_value(doc)}
|
||||
:macrocallback -> {{name, arity}, line, :defmacro, __behaviour__doc_value(doc)}
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defp __behaviour__doc_value(:none), do: nil
|
||||
defp __behaviour__doc_value(:hidden), do: false
|
||||
defp __behaviour__doc_value(%{"en" => doc}), do: doc
|
||||
|
||||
import unquote(__MODULE__)
|
||||
end
|
||||
end
|
||||
end
|
||||
@@ -1,231 +0,0 @@
|
||||
defmodule Bitwise do
|
||||
@moduledoc """
|
||||
A set of macros that perform calculations on bits.
|
||||
|
||||
The macros in this module come in two flavors: named or
|
||||
operators. For example:
|
||||
|
||||
iex> use Bitwise
|
||||
iex> bnot(1) # named
|
||||
-2
|
||||
iex> 1 &&& 1 # operator
|
||||
1
|
||||
|
||||
If you prefer to use only operators or skip them, you can
|
||||
pass the following options:
|
||||
|
||||
* `:only_operators` - includes only operators
|
||||
* `:skip_operators` - skips operators
|
||||
|
||||
For example:
|
||||
|
||||
iex> use Bitwise, only_operators: true
|
||||
iex> 1 &&& 1
|
||||
1
|
||||
|
||||
When invoked with no options, `use Bitwise` is equivalent
|
||||
to `import Bitwise`.
|
||||
|
||||
All bitwise macros can be used in guards:
|
||||
|
||||
iex> use Bitwise
|
||||
iex> odd? = fn
|
||||
...> int when band(int, 1) == 1 -> true
|
||||
...> _ -> false
|
||||
...> end
|
||||
iex> odd?.(1)
|
||||
true
|
||||
|
||||
"""
|
||||
|
||||
@doc false
|
||||
defmacro __using__(options) do
|
||||
except =
|
||||
cond do
|
||||
Keyword.get(options, :only_operators) ->
|
||||
[bnot: 1, band: 2, bor: 2, bxor: 2, bsl: 2, bsr: 2]
|
||||
|
||||
Keyword.get(options, :skip_operators) ->
|
||||
[~~~: 1, &&&: 2, |||: 2, ^^^: 2, <<<: 2, >>>: 2]
|
||||
|
||||
true ->
|
||||
[]
|
||||
end
|
||||
|
||||
quote do
|
||||
import Bitwise, except: unquote(except)
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Calculates the bitwise NOT of its argument.
|
||||
|
||||
iex> bnot(2)
|
||||
-3
|
||||
iex> bnot(2) &&& 3
|
||||
1
|
||||
|
||||
"""
|
||||
@doc guard: true
|
||||
defmacro bnot(expr) do
|
||||
quote(do: :erlang.bnot(unquote(expr)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Prefix (unary) operator; calculates the bitwise NOT of its argument.
|
||||
|
||||
iex> ~~~2
|
||||
-3
|
||||
iex> ~~~2 &&& 3
|
||||
1
|
||||
|
||||
"""
|
||||
@doc guard: true
|
||||
defmacro ~~~expr do
|
||||
quote(do: :erlang.bnot(unquote(expr)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Calculates the bitwise AND of its arguments.
|
||||
|
||||
iex> band(9, 3)
|
||||
1
|
||||
|
||||
"""
|
||||
@doc guard: true
|
||||
defmacro band(left, right) do
|
||||
quote(do: :erlang.band(unquote(left), unquote(right)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Infix operator; calculates the bitwise AND of its arguments.
|
||||
|
||||
iex> 9 &&& 3
|
||||
1
|
||||
|
||||
"""
|
||||
@doc guard: true
|
||||
defmacro left &&& right do
|
||||
quote(do: :erlang.band(unquote(left), unquote(right)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Calculates the bitwise OR of its arguments.
|
||||
|
||||
iex> bor(9, 3)
|
||||
11
|
||||
|
||||
"""
|
||||
@doc guard: true
|
||||
defmacro bor(left, right) do
|
||||
quote(do: :erlang.bor(unquote(left), unquote(right)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Infix operator; calculates the bitwise OR of its arguments.
|
||||
|
||||
iex> 9 ||| 3
|
||||
11
|
||||
|
||||
"""
|
||||
@doc guard: true
|
||||
defmacro left ||| right do
|
||||
quote(do: :erlang.bor(unquote(left), unquote(right)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Calculates the bitwise XOR of its arguments.
|
||||
|
||||
iex> bxor(9, 3)
|
||||
10
|
||||
|
||||
"""
|
||||
@doc guard: true
|
||||
defmacro bxor(left, right) do
|
||||
quote(do: :erlang.bxor(unquote(left), unquote(right)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Infix operator; calculates the bitwise XOR of its arguments.
|
||||
|
||||
iex> 9 ^^^ 3
|
||||
10
|
||||
|
||||
"""
|
||||
@doc guard: true
|
||||
defmacro left ^^^ right do
|
||||
quote(do: :erlang.bxor(unquote(left), unquote(right)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Calculates the result of an arithmetic left bitshift.
|
||||
|
||||
iex> bsl(1, 2)
|
||||
4
|
||||
iex> bsl(1, -2)
|
||||
0
|
||||
iex> bsl(-1, 2)
|
||||
-4
|
||||
iex> bsl(-1, -2)
|
||||
-1
|
||||
|
||||
"""
|
||||
@doc guard: true
|
||||
defmacro bsl(left, right) do
|
||||
quote(do: :erlang.bsl(unquote(left), unquote(right)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Infix operator; calculates the result of an arithmetic left bitshift.
|
||||
|
||||
iex> 1 <<< 2
|
||||
4
|
||||
iex> 1 <<< -2
|
||||
0
|
||||
iex> -1 <<< 2
|
||||
-4
|
||||
iex> -1 <<< -2
|
||||
-1
|
||||
|
||||
"""
|
||||
@doc guard: true
|
||||
defmacro left <<< right do
|
||||
quote(do: :erlang.bsl(unquote(left), unquote(right)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Calculates the result of an arithmetic right bitshift.
|
||||
|
||||
iex> bsr(1, 2)
|
||||
0
|
||||
iex> bsr(1, -2)
|
||||
4
|
||||
iex> bsr(-1, 2)
|
||||
-1
|
||||
iex> bsr(-1, -2)
|
||||
-4
|
||||
|
||||
"""
|
||||
@doc guard: true
|
||||
defmacro bsr(left, right) do
|
||||
quote(do: :erlang.bsr(unquote(left), unquote(right)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Infix operator; calculates the result of an arithmetic right bitshift.
|
||||
|
||||
iex> 1 >>> 2
|
||||
0
|
||||
iex> 1 >>> -2
|
||||
4
|
||||
iex> -1 >>> 2
|
||||
-1
|
||||
iex> -1 >>> -2
|
||||
-4
|
||||
|
||||
"""
|
||||
@doc guard: true
|
||||
defmacro left >>> right do
|
||||
quote(do: :erlang.bsr(unquote(left), unquote(right)))
|
||||
end
|
||||
end
|
||||
@@ -1,320 +0,0 @@
|
||||
defmodule Calendar do
|
||||
@moduledoc """
|
||||
This module defines the responsibilities for working with
|
||||
calendars, dates, times and datetimes in Elixir.
|
||||
|
||||
Currently it defines types and the minimal implementation
|
||||
for a calendar behaviour in Elixir. The goal of the Calendar
|
||||
features in Elixir is to provide a base for interoperability
|
||||
instead of full-featured datetime API.
|
||||
|
||||
For the actual date, time and datetime structures, see `Date`,
|
||||
`Time`, `NaiveDateTime` and `DateTime`.
|
||||
|
||||
Note the year, month, day, etc. designations are overspecified
|
||||
(i.e. an integer instead of `1..12` for months) because different
|
||||
calendars may have a different number of days per month, months per year and so on.
|
||||
"""
|
||||
|
||||
@type year :: integer
|
||||
@type month :: pos_integer
|
||||
@type day :: pos_integer
|
||||
@type week :: pos_integer
|
||||
@type day_of_week :: non_neg_integer
|
||||
@type era :: non_neg_integer
|
||||
|
||||
@type hour :: non_neg_integer
|
||||
@type minute :: non_neg_integer
|
||||
@type second :: non_neg_integer
|
||||
|
||||
@typedoc """
|
||||
The internal time format is used when converting between calendars.
|
||||
|
||||
It represents time as a fraction of a day (starting from midnight).
|
||||
`parts_in_day` specifies how much of the day is already passed,
|
||||
while `parts_per_day` signifies how many parts there fit in a day.
|
||||
"""
|
||||
@type day_fraction :: {parts_in_day :: non_neg_integer, parts_per_day :: pos_integer}
|
||||
|
||||
@typedoc """
|
||||
The internal date format that is used when converting between calendars.
|
||||
|
||||
This is the number of days including the fractional part that has passed of
|
||||
the last day since 0000-01-01+00:00T00:00.000000 in ISO 8601 notation (also
|
||||
known as midnight 1 January BC 1 of the proleptic Gregorian calendar).
|
||||
"""
|
||||
@type iso_days :: {days :: integer, day_fraction}
|
||||
|
||||
@typedoc """
|
||||
Microseconds with stored precision.
|
||||
|
||||
The precision represents the number of digits that must be used when
|
||||
representing the microseconds to external format. If the precision is 0,
|
||||
it means microseconds must be skipped.
|
||||
"""
|
||||
@type microsecond :: {0..999_999, 0..6}
|
||||
|
||||
@typedoc "A calendar implementation"
|
||||
@type calendar :: module
|
||||
|
||||
@typedoc "The time zone ID according to the IANA tz database (e.g. Europe/Zurich)"
|
||||
@type time_zone :: String.t()
|
||||
|
||||
@typedoc "The time zone abbreviation (e.g. CET or CEST or BST etc.)"
|
||||
@type zone_abbr :: String.t()
|
||||
|
||||
@typedoc "The time zone UTC offset in seconds"
|
||||
@type utc_offset :: integer
|
||||
|
||||
@typedoc "The time zone standard offset in seconds (not zero in summer times)"
|
||||
@type std_offset :: integer
|
||||
|
||||
@typedoc "Any map/struct that contains the date fields"
|
||||
@type date :: %{optional(any) => any, calendar: calendar, year: year, month: month, day: day}
|
||||
|
||||
@typedoc "Any map/struct that contains the time fields"
|
||||
@type time :: %{
|
||||
optional(any) => any,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
}
|
||||
|
||||
@typedoc "Any map/struct that contains the naive_datetime fields"
|
||||
@type naive_datetime :: %{
|
||||
optional(any) => any,
|
||||
calendar: calendar,
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
}
|
||||
|
||||
@typedoc "Any map/struct that contains the datetime fields"
|
||||
@type datetime :: %{
|
||||
optional(any) => any,
|
||||
calendar: calendar,
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond,
|
||||
time_zone: time_zone,
|
||||
zone_abbr: zone_abbr,
|
||||
utc_offset: utc_offset,
|
||||
std_offset: std_offset
|
||||
}
|
||||
|
||||
@typedoc """
|
||||
Specifies the time zone database for calendar operations.
|
||||
|
||||
Many functions in the `DateTime` module require a time zone database.
|
||||
By default, it uses the default time zone database returned by
|
||||
`Calendar.get_time_zone_database/0`, which defaults to
|
||||
`Calendar.UTCOnlyTimeZoneDatabase` which only handles "Etc/UTC"
|
||||
datetimes and returns `{:error, :utc_only_time_zone_database}`
|
||||
for any other time zone.
|
||||
|
||||
Other time zone databases (including ones provided by packages)
|
||||
can be configure as default either via configuration:
|
||||
|
||||
config :elixir, :time_zone_database, CustomTimeZoneDatabase
|
||||
|
||||
or by calling `Calendar.put_time_zone_database/1`.
|
||||
|
||||
See `Calendar.TimeZoneDatabase` for more information on custom
|
||||
time zone databases.
|
||||
"""
|
||||
@type time_zone_database :: module()
|
||||
|
||||
@doc """
|
||||
Returns how many days there are in the given year-month.
|
||||
"""
|
||||
@callback days_in_month(year, month) :: day
|
||||
|
||||
@doc """
|
||||
Returns how many months there are in the given year.
|
||||
"""
|
||||
@callback months_in_year(year) :: month
|
||||
|
||||
@doc """
|
||||
Returns `true` if the given year is a leap year.
|
||||
|
||||
A leap year is a year of a longer length than normal. The exact meaning
|
||||
is up to the calendar. A calendar must return `false` if it does not support
|
||||
the concept of leap years.
|
||||
"""
|
||||
@callback leap_year?(year) :: boolean
|
||||
|
||||
@doc """
|
||||
Calculates the day of the week from the given `year`, `month`, and `day`.
|
||||
"""
|
||||
@callback day_of_week(year, month, day) :: day_of_week()
|
||||
|
||||
@doc """
|
||||
Calculates the day of the year from the given `year`, `month`, and `day`.
|
||||
"""
|
||||
@callback day_of_year(year, month, day) :: non_neg_integer()
|
||||
|
||||
@doc """
|
||||
Calculates the quarter of the year from the given `year`, `month`, and `day`.
|
||||
"""
|
||||
@callback quarter_of_year(year, month, day) :: non_neg_integer()
|
||||
|
||||
@doc """
|
||||
Calculates the year and era from the given `year`.
|
||||
"""
|
||||
@callback year_of_era(year) :: {year, era}
|
||||
|
||||
@doc """
|
||||
Calculates the day and era from the given `year`, `month`, and `day`.
|
||||
"""
|
||||
@callback day_of_era(year, month, day) :: {non_neg_integer(), era}
|
||||
|
||||
@doc """
|
||||
Converts the date into a string according to the calendar.
|
||||
"""
|
||||
@callback date_to_string(year, month, day) :: String.t()
|
||||
|
||||
@doc """
|
||||
Converts the datetime (without time zone) into a string according to the calendar.
|
||||
"""
|
||||
@callback naive_datetime_to_string(year, month, day, hour, minute, second, microsecond) ::
|
||||
String.t()
|
||||
|
||||
@doc """
|
||||
Converts the datetime (with time zone) into a string according to the calendar.
|
||||
"""
|
||||
@callback datetime_to_string(
|
||||
year,
|
||||
month,
|
||||
day,
|
||||
hour,
|
||||
minute,
|
||||
second,
|
||||
microsecond,
|
||||
time_zone,
|
||||
zone_abbr,
|
||||
utc_offset,
|
||||
std_offset
|
||||
) :: String.t()
|
||||
|
||||
@doc """
|
||||
Converts the time into a string according to the calendar.
|
||||
"""
|
||||
@callback time_to_string(hour, minute, second, microsecond) :: String.t()
|
||||
|
||||
@doc """
|
||||
Converts the given datetime (without time zone) into the `t:iso_days/0` format.
|
||||
"""
|
||||
@callback naive_datetime_to_iso_days(year, month, day, hour, minute, second, microsecond) ::
|
||||
iso_days
|
||||
|
||||
@doc """
|
||||
Converts `t:iso_days/0` to the Calendar's datetime format.
|
||||
"""
|
||||
@callback naive_datetime_from_iso_days(iso_days) ::
|
||||
{year, month, day, hour, minute, second, microsecond}
|
||||
|
||||
@doc """
|
||||
Converts the given time to the `t:day_fraction/0` format.
|
||||
"""
|
||||
@callback time_to_day_fraction(hour, minute, second, microsecond) :: day_fraction
|
||||
|
||||
@doc """
|
||||
Converts `t:day_fraction/0` to the Calendar's time format.
|
||||
"""
|
||||
@callback time_from_day_fraction(day_fraction) :: {hour, minute, second, microsecond}
|
||||
|
||||
@doc """
|
||||
Define the rollover moment for the given calendar.
|
||||
|
||||
This is the moment, in your calendar, when the current day ends
|
||||
and the next day starts.
|
||||
|
||||
The result of this function is used to check if two calendars rollover at
|
||||
the same time of day. If they do not, we can only convert datetimes and times
|
||||
between them. If they do, this means that we can also convert dates as well
|
||||
as naive datetimes between them.
|
||||
|
||||
This day fraction should be in its most simplified form possible, to make comparisons fast.
|
||||
|
||||
## Examples
|
||||
|
||||
* If, in your Calendar, a new day starts at midnight, return {0, 1}.
|
||||
* If, in your Calendar, a new day starts at sunrise, return {1, 4}.
|
||||
* If, in your Calendar, a new day starts at noon, return {1, 2}.
|
||||
* If, in your Calendar, a new day starts at sunset, return {3, 4}.
|
||||
|
||||
"""
|
||||
@callback day_rollover_relative_to_midnight_utc() :: day_fraction
|
||||
|
||||
@doc """
|
||||
Should return `true` if the given date describes a proper date in the calendar.
|
||||
"""
|
||||
@callback valid_date?(year, month, day) :: boolean
|
||||
|
||||
@doc """
|
||||
Should return `true` if the given time describes a proper time in the calendar.
|
||||
"""
|
||||
@callback valid_time?(hour, minute, second, microsecond) :: boolean
|
||||
|
||||
# General Helpers
|
||||
|
||||
@doc """
|
||||
Returns `true` if two calendars have the same moment of starting a new day,
|
||||
`false` otherwise.
|
||||
|
||||
If two calendars are not compatible, we can only convert datetimes and times
|
||||
between them. If they are compatible, this means that we can also convert
|
||||
dates as well as naive datetimes between them.
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
@spec compatible_calendars?(Calendar.calendar(), Calendar.calendar()) :: boolean
|
||||
def compatible_calendars?(calendar, calendar), do: true
|
||||
|
||||
def compatible_calendars?(calendar1, calendar2) do
|
||||
calendar1.day_rollover_relative_to_midnight_utc() ==
|
||||
calendar2.day_rollover_relative_to_midnight_utc()
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns a microsecond tuple truncated to a given precision (`:microsecond`,
|
||||
`:millisecond` or `:second`).
|
||||
"""
|
||||
@doc since: "1.6.0"
|
||||
@spec truncate(Calendar.microsecond(), :microsecond | :millisecond | :second) ::
|
||||
Calendar.microsecond()
|
||||
def truncate(microsecond_tuple, :microsecond), do: microsecond_tuple
|
||||
|
||||
def truncate({microsecond, precision}, :millisecond) do
|
||||
output_precision = min(precision, 3)
|
||||
{div(microsecond, 1000) * 1000, output_precision}
|
||||
end
|
||||
|
||||
def truncate(_, :second), do: {0, 0}
|
||||
|
||||
@doc """
|
||||
Sets the current time zone database.
|
||||
"""
|
||||
@doc since: "1.8.0"
|
||||
@spec put_time_zone_database(time_zone_database()) :: :ok
|
||||
def put_time_zone_database(database) do
|
||||
Application.put_env(:elixir, :time_zone_database, database)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets the current time zone database.
|
||||
"""
|
||||
@doc since: "1.8.0"
|
||||
@spec get_time_zone_database() :: time_zone_database()
|
||||
def get_time_zone_database() do
|
||||
Application.get_env(:elixir, :time_zone_database, Calendar.UTCOnlyTimeZoneDatabase)
|
||||
end
|
||||
end
|
||||
@@ -1,780 +0,0 @@
|
||||
defmodule Date do
|
||||
@moduledoc """
|
||||
A Date struct and functions.
|
||||
|
||||
The Date struct contains the fields year, month, day and calendar.
|
||||
New dates can be built with the `new/3` function or using the
|
||||
`~D` (see `Kernel.sigil_D/2`) sigil:
|
||||
|
||||
iex> ~D[2000-01-01]
|
||||
~D[2000-01-01]
|
||||
|
||||
Both `new/3` and sigil return a struct where the date fields can
|
||||
be accessed directly:
|
||||
|
||||
iex> date = ~D[2000-01-01]
|
||||
iex> date.year
|
||||
2000
|
||||
iex> date.month
|
||||
1
|
||||
|
||||
The functions on this module work with the `Date` struct as well
|
||||
as any struct that contains the same fields as the `Date` struct,
|
||||
such as `NaiveDateTime` and `DateTime`. Such functions expect
|
||||
`t:Calendar.date/0` in their typespecs (instead of `t:t/0`).
|
||||
|
||||
Developers should avoid creating the Date structs directly
|
||||
and instead rely on the functions provided by this module as well
|
||||
as the ones in third-party calendar libraries.
|
||||
|
||||
## Comparing dates
|
||||
|
||||
Comparisons in Elixir using `==/2`, `>/2`, `</2` and similar are structural
|
||||
and based on the `Date` struct fields. For proper comparison between
|
||||
dates, use the `compare/2` function.
|
||||
|
||||
## Using epochs
|
||||
|
||||
The `add/2` and `diff/2` functions can be used for computing dates
|
||||
or retrieving the number of days between instants. For example, if there
|
||||
is an interest in computing the number of days from the Unix epoch
|
||||
(1970-01-01):
|
||||
|
||||
iex> Date.diff(~D[2010-04-17], ~D[1970-01-01])
|
||||
14716
|
||||
|
||||
iex> Date.add(~D[1970-01-01], 14716)
|
||||
~D[2010-04-17]
|
||||
|
||||
Those functions are optimized to deal with common epochs, such
|
||||
as the Unix Epoch above or the Gregorian Epoch (0000-01-01).
|
||||
"""
|
||||
|
||||
@enforce_keys [:year, :month, :day]
|
||||
defstruct [:year, :month, :day, calendar: Calendar.ISO]
|
||||
|
||||
@type t :: %__MODULE__{
|
||||
year: Calendar.year(),
|
||||
month: Calendar.month(),
|
||||
day: Calendar.day(),
|
||||
calendar: Calendar.calendar()
|
||||
}
|
||||
|
||||
@doc """
|
||||
Returns a range of dates.
|
||||
|
||||
A range of dates represents a discrete number of dates where
|
||||
the first and last values are dates with matching calendars.
|
||||
|
||||
Ranges of dates can be either increasing (`first <= last`) or
|
||||
decreasing (`first > last`). They are also always inclusive.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.range(~D[1999-01-01], ~D[2000-01-01])
|
||||
#DateRange<~D[1999-01-01], ~D[2000-01-01]>
|
||||
|
||||
A range of dates implements the `Enumerable` protocol, which means
|
||||
functions in the `Enum` module can be used to work with
|
||||
ranges:
|
||||
|
||||
iex> range = Date.range(~D[2001-01-01], ~D[2002-01-01])
|
||||
iex> Enum.count(range)
|
||||
366
|
||||
iex> Enum.member?(range, ~D[2001-02-01])
|
||||
true
|
||||
iex> Enum.reduce(range, 0, fn _date, acc -> acc - 1 end)
|
||||
-366
|
||||
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
@spec range(Date.t(), Date.t()) :: Date.Range.t()
|
||||
def range(%Date{calendar: calendar} = first, %Date{calendar: calendar} = last) do
|
||||
{first_days, _} = to_iso_days(first)
|
||||
{last_days, _} = to_iso_days(last)
|
||||
|
||||
%Date.Range{
|
||||
first: first,
|
||||
last: last,
|
||||
first_in_iso_days: first_days,
|
||||
last_in_iso_days: last_days
|
||||
}
|
||||
end
|
||||
|
||||
def range(%Date{}, %Date{}) do
|
||||
raise ArgumentError, "both dates must have matching calendars"
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the current date in UTC.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> date = Date.utc_today()
|
||||
iex> date.year >= 2016
|
||||
true
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec utc_today(Calendar.calendar()) :: t
|
||||
def utc_today(calendar \\ Calendar.ISO)
|
||||
|
||||
def utc_today(Calendar.ISO) do
|
||||
{:ok, {year, month, day}, _, _} = Calendar.ISO.from_unix(System.os_time(), :native)
|
||||
%Date{year: year, month: month, day: day}
|
||||
end
|
||||
|
||||
def utc_today(calendar) do
|
||||
calendar
|
||||
|> DateTime.utc_now()
|
||||
|> DateTime.to_date()
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns `true` if the year in the given `date` is a leap year.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.leap_year?(~D[2000-01-01])
|
||||
true
|
||||
iex> Date.leap_year?(~D[2001-01-01])
|
||||
false
|
||||
iex> Date.leap_year?(~D[2004-01-01])
|
||||
true
|
||||
iex> Date.leap_year?(~D[1900-01-01])
|
||||
false
|
||||
iex> Date.leap_year?(~N[2004-01-01 01:23:45])
|
||||
true
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec leap_year?(Calendar.date()) :: boolean()
|
||||
def leap_year?(date)
|
||||
|
||||
def leap_year?(%{calendar: calendar, year: year}) do
|
||||
calendar.leap_year?(year)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the number of days in the given `date` month.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.days_in_month(~D[1900-01-13])
|
||||
31
|
||||
iex> Date.days_in_month(~D[1900-02-09])
|
||||
28
|
||||
iex> Date.days_in_month(~N[2000-02-20 01:23:45])
|
||||
29
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec days_in_month(Calendar.date()) :: Calendar.day()
|
||||
def days_in_month(date)
|
||||
|
||||
def days_in_month(%{calendar: calendar, year: year, month: month}) do
|
||||
calendar.days_in_month(year, month)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the number of months in the given `date` year.
|
||||
|
||||
## Example
|
||||
|
||||
iex> Date.months_in_year(~D[1900-01-13])
|
||||
12
|
||||
|
||||
"""
|
||||
@doc since: "1.7.0"
|
||||
@spec months_in_year(Calendar.date()) :: Calendar.month()
|
||||
def months_in_year(date)
|
||||
|
||||
def months_in_year(%{calendar: calendar, year: year}) do
|
||||
calendar.months_in_year(year)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Builds a new ISO date.
|
||||
|
||||
Expects all values to be integers. Returns `{:ok, date}` if each
|
||||
entry fits its appropriate range, returns `{:error, reason}` otherwise.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.new(2000, 1, 1)
|
||||
{:ok, ~D[2000-01-01]}
|
||||
iex> Date.new(2000, 13, 1)
|
||||
{:error, :invalid_date}
|
||||
iex> Date.new(2000, 2, 29)
|
||||
{:ok, ~D[2000-02-29]}
|
||||
|
||||
iex> Date.new(2000, 2, 30)
|
||||
{:error, :invalid_date}
|
||||
iex> Date.new(2001, 2, 29)
|
||||
{:error, :invalid_date}
|
||||
|
||||
"""
|
||||
@spec new(Calendar.year(), Calendar.month(), Calendar.day(), Calendar.calendar()) ::
|
||||
{:ok, t} | {:error, atom}
|
||||
def new(year, month, day, calendar \\ Calendar.ISO) do
|
||||
if calendar.valid_date?(year, month, day) do
|
||||
{:ok, %Date{year: year, month: month, day: day, calendar: calendar}}
|
||||
else
|
||||
{:error, :invalid_date}
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts the given date to a string according to its calendar.
|
||||
|
||||
### Examples
|
||||
|
||||
iex> Date.to_string(~D[2000-02-28])
|
||||
"2000-02-28"
|
||||
iex> Date.to_string(~N[2000-02-28 01:23:45])
|
||||
"2000-02-28"
|
||||
iex> Date.to_string(~D[-0100-12-15])
|
||||
"-0100-12-15"
|
||||
|
||||
"""
|
||||
@spec to_string(Calendar.date()) :: String.t()
|
||||
def to_string(date)
|
||||
|
||||
def to_string(%{calendar: calendar, year: year, month: month, day: day}) do
|
||||
calendar.date_to_string(year, month, day)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Parses the extended "Dates" format described by
|
||||
[ISO 8601:2004](https://en.wikipedia.org/wiki/ISO_8601).
|
||||
|
||||
The year parsed by this function is limited to four digits.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.from_iso8601("2015-01-23")
|
||||
{:ok, ~D[2015-01-23]}
|
||||
|
||||
iex> Date.from_iso8601("2015:01:23")
|
||||
{:error, :invalid_format}
|
||||
|
||||
iex> Date.from_iso8601("2015-01-32")
|
||||
{:error, :invalid_date}
|
||||
|
||||
"""
|
||||
@spec from_iso8601(String.t(), Calendar.calendar()) :: {:ok, t} | {:error, atom}
|
||||
def from_iso8601(string, calendar \\ Calendar.ISO)
|
||||
|
||||
def from_iso8601(<<?-, rest::binary>>, calendar) do
|
||||
with {:ok, %{year: year} = date} <- raw_from_iso8601(rest, calendar) do
|
||||
{:ok, %{date | year: -year}}
|
||||
end
|
||||
end
|
||||
|
||||
def from_iso8601(<<rest::binary>>, calendar) do
|
||||
raw_from_iso8601(rest, calendar)
|
||||
end
|
||||
|
||||
[match_date, guard_date, read_date] = Calendar.ISO.__match_date__()
|
||||
|
||||
defp raw_from_iso8601(string, calendar) do
|
||||
with unquote(match_date) <- string,
|
||||
true <- unquote(guard_date) do
|
||||
{year, month, day} = unquote(read_date)
|
||||
|
||||
with {:ok, date} <- new(year, month, day, Calendar.ISO) do
|
||||
convert(date, calendar)
|
||||
end
|
||||
else
|
||||
_ -> {:error, :invalid_format}
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Parses the extended "Dates" format described by
|
||||
[ISO 8601:2004](https://en.wikipedia.org/wiki/ISO_8601).
|
||||
|
||||
Raises if the format is invalid.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.from_iso8601!("2015-01-23")
|
||||
~D[2015-01-23]
|
||||
iex> Date.from_iso8601!("2015:01:23")
|
||||
** (ArgumentError) cannot parse "2015:01:23" as date, reason: :invalid_format
|
||||
|
||||
"""
|
||||
@spec from_iso8601!(String.t(), Calendar.calendar()) :: t
|
||||
def from_iso8601!(string, calendar \\ Calendar.ISO) do
|
||||
case from_iso8601(string, calendar) do
|
||||
{:ok, value} ->
|
||||
value
|
||||
|
||||
{:error, reason} ->
|
||||
raise ArgumentError, "cannot parse #{inspect(string)} as date, reason: #{inspect(reason)}"
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts the given `date` to
|
||||
[ISO 8601:2004](https://en.wikipedia.org/wiki/ISO_8601).
|
||||
|
||||
By default, `Date.to_iso8601/2` returns dates formatted in the "extended"
|
||||
format, for human readability. It also supports the "basic" format through passing the `:basic` option.
|
||||
|
||||
Only supports converting dates which are in the ISO calendar,
|
||||
or other calendars in which the days also start at midnight.
|
||||
Attempting to convert dates from other calendars will raise an `ArgumentError`.
|
||||
|
||||
### Examples
|
||||
|
||||
iex> Date.to_iso8601(~D[2000-02-28])
|
||||
"2000-02-28"
|
||||
|
||||
iex> Date.to_iso8601(~D[2000-02-28], :basic)
|
||||
"20000228"
|
||||
|
||||
iex> Date.to_iso8601(~N[2000-02-28 00:00:00])
|
||||
"2000-02-28"
|
||||
|
||||
"""
|
||||
@spec to_iso8601(Calendar.date(), :extended | :basic) :: String.t()
|
||||
def to_iso8601(date, format \\ :extended)
|
||||
|
||||
def to_iso8601(%{calendar: Calendar.ISO} = date, format) when format in [:basic, :extended] do
|
||||
%{year: year, month: month, day: day} = date
|
||||
Calendar.ISO.date_to_string(year, month, day, format)
|
||||
end
|
||||
|
||||
def to_iso8601(%{calendar: _} = date, format) when format in [:basic, :extended] do
|
||||
date
|
||||
|> convert!(Calendar.ISO)
|
||||
|> to_iso8601()
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts the given `date` to an Erlang date tuple.
|
||||
|
||||
Only supports converting dates which are in the ISO calendar,
|
||||
or other calendars in which the days also start at midnight.
|
||||
Attempting to convert dates from other calendars will raise.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.to_erl(~D[2000-01-01])
|
||||
{2000, 1, 1}
|
||||
|
||||
iex> Date.to_erl(~N[2000-01-01 00:00:00])
|
||||
{2000, 1, 1}
|
||||
|
||||
"""
|
||||
@spec to_erl(Calendar.date()) :: :calendar.date()
|
||||
def to_erl(date) do
|
||||
%{year: year, month: month, day: day} = convert!(date, Calendar.ISO)
|
||||
{year, month, day}
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts an Erlang date tuple to a `Date` struct.
|
||||
|
||||
Only supports converting dates which are in the ISO calendar,
|
||||
or other calendars in which the days also start at midnight.
|
||||
Attempting to convert dates from other calendars will return an error tuple.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.from_erl({2000, 1, 1})
|
||||
{:ok, ~D[2000-01-01]}
|
||||
iex> Date.from_erl({2000, 13, 1})
|
||||
{:error, :invalid_date}
|
||||
|
||||
"""
|
||||
@spec from_erl(:calendar.date(), Calendar.calendar()) :: {:ok, t} | {:error, atom}
|
||||
def from_erl(tuple, calendar \\ Calendar.ISO)
|
||||
|
||||
def from_erl({year, month, day}, calendar) do
|
||||
with {:ok, date} <- new(year, month, day, Calendar.ISO), do: convert(date, calendar)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts an Erlang date tuple but raises for invalid dates.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.from_erl!({2000, 1, 1})
|
||||
~D[2000-01-01]
|
||||
iex> Date.from_erl!({2000, 13, 1})
|
||||
** (ArgumentError) cannot convert {2000, 13, 1} to date, reason: :invalid_date
|
||||
|
||||
"""
|
||||
@spec from_erl!(:calendar.date(), Calendar.calendar()) :: t
|
||||
def from_erl!(tuple, calendar \\ Calendar.ISO) do
|
||||
case from_erl(tuple, calendar) do
|
||||
{:ok, value} ->
|
||||
value
|
||||
|
||||
{:error, reason} ->
|
||||
raise ArgumentError,
|
||||
"cannot convert #{inspect(tuple)} to date, reason: #{inspect(reason)}"
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Compares two date structs.
|
||||
|
||||
Returns `:gt` if first date is later than the second
|
||||
and `:lt` for vice versa. If the two dates are equal
|
||||
`:eq` is returned.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.compare(~D[2016-04-16], ~D[2016-04-28])
|
||||
:lt
|
||||
|
||||
This function can also be used to compare across more
|
||||
complex calendar types by considering only the date fields:
|
||||
|
||||
iex> Date.compare(~D[2016-04-16], ~N[2016-04-28 01:23:45])
|
||||
:lt
|
||||
iex> Date.compare(~D[2016-04-16], ~N[2016-04-16 01:23:45])
|
||||
:eq
|
||||
iex> Date.compare(~N[2016-04-16 12:34:56], ~N[2016-04-16 01:23:45])
|
||||
:eq
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec compare(Calendar.date(), Calendar.date()) :: :lt | :eq | :gt
|
||||
def compare(%{calendar: calendar} = date1, %{calendar: calendar} = date2) do
|
||||
%{year: year1, month: month1, day: day1} = date1
|
||||
%{year: year2, month: month2, day: day2} = date2
|
||||
|
||||
case {{year1, month1, day1}, {year2, month2, day2}} do
|
||||
{first, second} when first > second -> :gt
|
||||
{first, second} when first < second -> :lt
|
||||
_ -> :eq
|
||||
end
|
||||
end
|
||||
|
||||
def compare(date1, date2) do
|
||||
if Calendar.compatible_calendars?(date1.calendar, date2.calendar) do
|
||||
case {to_iso_days(date1), to_iso_days(date2)} do
|
||||
{first, second} when first > second -> :gt
|
||||
{first, second} when first < second -> :lt
|
||||
_ -> :eq
|
||||
end
|
||||
else
|
||||
raise ArgumentError, """
|
||||
cannot compare #{inspect(date1)} with #{inspect(date2)}.
|
||||
|
||||
This comparison would be ambiguous as their calendars have incompatible day rollover moments.
|
||||
Specify an exact time of day (using DateTime) to resolve this ambiguity
|
||||
"""
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts the given `date` from its calendar to the given `calendar`.
|
||||
|
||||
Returns `{:ok, date}` if the calendars are compatible,
|
||||
or `{:error, :incompatible_calendars}` if they are not.
|
||||
|
||||
See also `Calendar.compatible_calendars?/2`.
|
||||
|
||||
## Examples
|
||||
|
||||
Imagine someone implements `Calendar.Holocene`, a calendar based on the
|
||||
Gregorian calendar that adds exactly 10,000 years to the current Gregorian
|
||||
year:
|
||||
|
||||
iex> Date.convert(~D[2000-01-01], Calendar.Holocene)
|
||||
{:ok, %Date{calendar: Calendar.Holocene, year: 12000, month: 1, day: 1}}
|
||||
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
@spec convert(Calendar.date(), Calendar.calendar()) ::
|
||||
{:ok, t} | {:error, :incompatible_calendars}
|
||||
def convert(%{calendar: calendar, year: year, month: month, day: day}, calendar) do
|
||||
{:ok, %Date{calendar: calendar, year: year, month: month, day: day}}
|
||||
end
|
||||
|
||||
def convert(%{calendar: calendar} = date, target_calendar) do
|
||||
if Calendar.compatible_calendars?(calendar, target_calendar) do
|
||||
result_date =
|
||||
date
|
||||
|> to_iso_days()
|
||||
|> from_iso_days(target_calendar)
|
||||
|
||||
{:ok, result_date}
|
||||
else
|
||||
{:error, :incompatible_calendars}
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Similar to `Date.convert/2`, but raises an `ArgumentError`
|
||||
if the conversion between the two calendars is not possible.
|
||||
|
||||
## Examples
|
||||
|
||||
Imagine someone implements `Calendar.Holocene`, a calendar based on the
|
||||
Gregorian calendar that adds exactly 10,000 years to the current Gregorian
|
||||
year:
|
||||
|
||||
iex> Date.convert!(~D[2000-01-01], Calendar.Holocene)
|
||||
%Date{calendar: Calendar.Holocene, year: 12000, month: 1, day: 1}
|
||||
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
@spec convert!(Calendar.date(), Calendar.calendar()) :: t
|
||||
def convert!(date, calendar) do
|
||||
case convert(date, calendar) do
|
||||
{:ok, value} ->
|
||||
value
|
||||
|
||||
{:error, reason} ->
|
||||
raise ArgumentError,
|
||||
"cannot convert #{inspect(date)} to target calendar #{inspect(calendar)}, " <>
|
||||
"reason: #{inspect(reason)}"
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Adds the number of days to the given `date`.
|
||||
|
||||
The days are counted as Gregorian days. The date is returned in the same
|
||||
calendar as it was given in.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.add(~D[2000-01-03], -2)
|
||||
~D[2000-01-01]
|
||||
iex> Date.add(~D[2000-01-01], 2)
|
||||
~D[2000-01-03]
|
||||
iex> Date.add(~N[2000-01-01 09:00:00], 2)
|
||||
~D[2000-01-03]
|
||||
iex> Date.add(~D[-0010-01-01], -2)
|
||||
~D[-0011-12-30]
|
||||
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
@spec add(Calendar.date(), integer()) :: t
|
||||
def add(%{calendar: Calendar.ISO} = date, days) do
|
||||
%{year: year, month: month, day: day} = date
|
||||
|
||||
{year, month, day} =
|
||||
Calendar.ISO.date_to_iso_days(year, month, day)
|
||||
|> Kernel.+(days)
|
||||
|> Calendar.ISO.date_from_iso_days()
|
||||
|
||||
%Date{calendar: Calendar.ISO, year: year, month: month, day: day}
|
||||
end
|
||||
|
||||
def add(%{calendar: calendar} = date, days) do
|
||||
{base_days, fraction} = to_iso_days(date)
|
||||
from_iso_days({base_days + days, fraction}, calendar)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Calculates the difference between two dates, in a full number of days.
|
||||
|
||||
It returns the number of Gregorian days between the dates. Only `Date`
|
||||
structs that follow the same or compatible calendars can be compared
|
||||
this way. If two calendars are not compatible, it will raise.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.diff(~D[2000-01-03], ~D[2000-01-01])
|
||||
2
|
||||
iex> Date.diff(~D[2000-01-01], ~D[2000-01-03])
|
||||
-2
|
||||
iex> Date.diff(~D[0000-01-02], ~D[-0001-12-30])
|
||||
3
|
||||
iex> Date.diff(~D[2000-01-01], ~N[2000-01-03 09:00:00])
|
||||
-2
|
||||
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
@spec diff(Calendar.date(), Calendar.date()) :: integer
|
||||
def diff(%{calendar: Calendar.ISO} = date1, %{calendar: Calendar.ISO} = date2) do
|
||||
%{year: year1, month: month1, day: day1} = date1
|
||||
%{year: year2, month: month2, day: day2} = date2
|
||||
|
||||
Calendar.ISO.date_to_iso_days(year1, month1, day1) -
|
||||
Calendar.ISO.date_to_iso_days(year2, month2, day2)
|
||||
end
|
||||
|
||||
def diff(%{calendar: calendar1} = date1, %{calendar: calendar2} = date2) do
|
||||
if Calendar.compatible_calendars?(calendar1, calendar2) do
|
||||
{days1, _} = to_iso_days(date1)
|
||||
{days2, _} = to_iso_days(date2)
|
||||
days1 - days2
|
||||
else
|
||||
raise ArgumentError,
|
||||
"cannot calculate the difference between #{inspect(date1)} and #{inspect(date2)} because their calendars are not compatible and thus the result would be ambiguous"
|
||||
end
|
||||
end
|
||||
|
||||
defp to_iso_days(%{calendar: Calendar.ISO, year: year, month: month, day: day}) do
|
||||
{Calendar.ISO.date_to_iso_days(year, month, day), {0, 86_400_000_000}}
|
||||
end
|
||||
|
||||
defp to_iso_days(%{calendar: calendar, year: year, month: month, day: day}) do
|
||||
calendar.naive_datetime_to_iso_days(year, month, day, 0, 0, 0, {0, 0})
|
||||
end
|
||||
|
||||
defp from_iso_days({days, _}, Calendar.ISO) do
|
||||
{year, month, day} = Calendar.ISO.date_from_iso_days(days)
|
||||
%Date{year: year, month: month, day: day, calendar: Calendar.ISO}
|
||||
end
|
||||
|
||||
defp from_iso_days(iso_days, target_calendar) do
|
||||
{year, month, day, _, _, _, _} = target_calendar.naive_datetime_from_iso_days(iso_days)
|
||||
%Date{year: year, month: month, day: day, calendar: target_calendar}
|
||||
end
|
||||
|
||||
@doc """
|
||||
Calculates the day of the week of a given `date`.
|
||||
|
||||
Returns the day of the week as an integer. For the ISO 8601
|
||||
calendar (the default), it is an integer from 1 to 7, where
|
||||
1 is Monday and 7 is Sunday.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.day_of_week(~D[2016-10-31])
|
||||
1
|
||||
iex> Date.day_of_week(~D[2016-11-01])
|
||||
2
|
||||
iex> Date.day_of_week(~N[2016-11-01 01:23:45])
|
||||
2
|
||||
iex> Date.day_of_week(~D[-0015-10-30])
|
||||
3
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec day_of_week(Calendar.date()) :: Calendar.day()
|
||||
def day_of_week(date)
|
||||
|
||||
def day_of_week(%{calendar: calendar, year: year, month: month, day: day}) do
|
||||
calendar.day_of_week(year, month, day)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Calculates the day of the year of a given `date`.
|
||||
|
||||
Returns the day of the year as an integer. For the ISO 8601
|
||||
calendar (the default), it is an integer from 1 to 366.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.day_of_year(~D[2016-01-01])
|
||||
1
|
||||
iex> Date.day_of_year(~D[2016-11-01])
|
||||
306
|
||||
iex> Date.day_of_year(~D[-0015-10-30])
|
||||
303
|
||||
iex> Date.day_of_year(~D[2004-12-31])
|
||||
366
|
||||
|
||||
"""
|
||||
@doc since: "1.8.0"
|
||||
@spec day_of_year(Calendar.date()) :: Calendar.day()
|
||||
def day_of_year(date)
|
||||
|
||||
def day_of_year(%{calendar: calendar, year: year, month: month, day: day}) do
|
||||
calendar.day_of_year(year, month, day)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Calculates the quarter of the year of a given `date`.
|
||||
|
||||
Returns the day of the year as an integer. For the ISO 8601
|
||||
calendar (the default), it is an integer from 1 to 4.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.quarter_of_year(~D[2016-10-31])
|
||||
4
|
||||
iex> Date.quarter_of_year(~D[2016-01-01])
|
||||
1
|
||||
iex> Date.quarter_of_year(~N[2016-04-01 01:23:45])
|
||||
2
|
||||
iex> Date.quarter_of_year(~D[-0015-09-30])
|
||||
3
|
||||
|
||||
"""
|
||||
@doc since: "1.8.0"
|
||||
@spec quarter_of_year(Calendar.date()) :: non_neg_integer()
|
||||
def quarter_of_year(date)
|
||||
|
||||
def quarter_of_year(%{calendar: calendar, year: year, month: month, day: day}) do
|
||||
calendar.quarter_of_year(year, month, day)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Calculates the year-of-era and era for a given
|
||||
calendar year.
|
||||
|
||||
Returns a tuple `{year, era}` representing the
|
||||
year within the era and the era number.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.year_of_era(~D[0001-01-01])
|
||||
{1, 1}
|
||||
iex> Date.year_of_era(~D[0000-12-31])
|
||||
{1, 0}
|
||||
iex> Date.year_of_era(~D[-0001-01-01])
|
||||
{2, 0}
|
||||
|
||||
"""
|
||||
@doc since: "1.8.0"
|
||||
@spec year_of_era(Calendar.date()) :: {Calendar.year(), non_neg_integer()}
|
||||
def year_of_era(date)
|
||||
|
||||
def year_of_era(%{calendar: calendar, year: year}) do
|
||||
calendar.year_of_era(year)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Calculates the day-of-era and era for a given
|
||||
calendar `date`.
|
||||
|
||||
Returns a tuple `{day, era}` representing the
|
||||
day within the era and the era number.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Date.day_of_era(~D[0001-01-01])
|
||||
{1, 1}
|
||||
|
||||
iex> Date.day_of_era(~D[0000-12-31])
|
||||
{1, 0}
|
||||
|
||||
"""
|
||||
@doc since: "1.8.0"
|
||||
@spec day_of_era(Calendar.date()) :: {Calendar.day(), non_neg_integer()}
|
||||
def day_of_era(date)
|
||||
|
||||
def day_of_era(%{calendar: calendar, year: year, month: month, day: day}) do
|
||||
calendar.day_of_era(year, month, day)
|
||||
end
|
||||
|
||||
## Helpers
|
||||
|
||||
defimpl String.Chars do
|
||||
def to_string(%{calendar: calendar, year: year, month: month, day: day}) do
|
||||
calendar.date_to_string(year, month, day)
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect do
|
||||
def inspect(%{calendar: Calendar.ISO, year: year, month: month, day: day}, _) do
|
||||
"~D[" <> Calendar.ISO.date_to_string(year, month, day) <> "]"
|
||||
end
|
||||
|
||||
def inspect(date, opts) do
|
||||
Inspect.Any.inspect(date, opts)
|
||||
end
|
||||
end
|
||||
end
|
||||
@@ -1,132 +0,0 @@
|
||||
defmodule Date.Range do
|
||||
@moduledoc """
|
||||
Returns an inclusive range between dates.
|
||||
|
||||
Ranges must be created with the `Date.range/2` function.
|
||||
|
||||
The following fields are public:
|
||||
|
||||
* `:first` - the initial date on the range
|
||||
* `:last` - the last date on the range
|
||||
|
||||
The remaining fields are private and should not be accessed.
|
||||
"""
|
||||
|
||||
@type t :: %__MODULE__{
|
||||
first: Date.t(),
|
||||
last: Date.t(),
|
||||
first_in_iso_days: iso_days(),
|
||||
last_in_iso_days: iso_days()
|
||||
}
|
||||
|
||||
@typep iso_days() :: Calendar.iso_days()
|
||||
|
||||
defstruct [:first, :last, :first_in_iso_days, :last_in_iso_days]
|
||||
|
||||
defimpl Enumerable do
|
||||
def member?(%{first: %{calendar: calendar}} = range, %Date{calendar: calendar} = date) do
|
||||
%{
|
||||
first: first,
|
||||
last: last,
|
||||
first_in_iso_days: first_in_iso_days,
|
||||
last_in_iso_days: last_in_iso_days
|
||||
} = range
|
||||
|
||||
%{year: first_year, month: first_month, day: first_day} = first
|
||||
%{year: last_year, month: last_month, day: last_day} = last
|
||||
%{year: year, month: month, day: day} = date
|
||||
first = {first_year, first_month, first_day}
|
||||
last = {last_year, last_month, last_day}
|
||||
date = {year, month, day}
|
||||
|
||||
if first_in_iso_days <= last_in_iso_days do
|
||||
{:ok, date >= first and date <= last}
|
||||
else
|
||||
{:ok, date >= last and date <= first}
|
||||
end
|
||||
end
|
||||
|
||||
def member?(_, _) do
|
||||
{:ok, false}
|
||||
end
|
||||
|
||||
def count(%{first_in_iso_days: first, last_in_iso_days: last}) do
|
||||
{:ok, abs(first - last) + 1}
|
||||
end
|
||||
|
||||
def slice(range) do
|
||||
%{
|
||||
first_in_iso_days: first,
|
||||
last_in_iso_days: last,
|
||||
first: %{calendar: calendar}
|
||||
} = range
|
||||
|
||||
if first <= last do
|
||||
{:ok, last - first + 1, &slice_asc(first + &1, &2, calendar)}
|
||||
else
|
||||
{:ok, first - last + 1, &slice_desc(first - &1, &2, calendar)}
|
||||
end
|
||||
end
|
||||
|
||||
defp slice_asc(current, 1, calendar), do: [date_from_iso_days(current, calendar)]
|
||||
|
||||
defp slice_asc(current, remaining, calendar) do
|
||||
[date_from_iso_days(current, calendar) | slice_asc(current + 1, remaining - 1, calendar)]
|
||||
end
|
||||
|
||||
defp slice_desc(current, 1, calendar), do: [date_from_iso_days(current, calendar)]
|
||||
|
||||
defp slice_desc(current, remaining, calendar) do
|
||||
[date_from_iso_days(current, calendar) | slice_desc(current - 1, remaining - 1, calendar)]
|
||||
end
|
||||
|
||||
def reduce(range, acc, fun) do
|
||||
%{
|
||||
first_in_iso_days: first_in_iso_days,
|
||||
last_in_iso_days: last_in_iso_days,
|
||||
first: %{calendar: calendar}
|
||||
} = range
|
||||
|
||||
up? = first_in_iso_days <= last_in_iso_days
|
||||
reduce(first_in_iso_days, last_in_iso_days, acc, fun, calendar, up?)
|
||||
end
|
||||
|
||||
defp reduce(_x, _y, {:halt, acc}, _fun, _calendar, _up?) do
|
||||
{:halted, acc}
|
||||
end
|
||||
|
||||
defp reduce(x, y, {:suspend, acc}, fun, calendar, up?) do
|
||||
{:suspended, acc, &reduce(x, y, &1, fun, calendar, up?)}
|
||||
end
|
||||
|
||||
defp reduce(x, y, {:cont, acc}, fun, calendar, up? = true) when x <= y do
|
||||
reduce(x + 1, y, fun.(date_from_iso_days(x, calendar), acc), fun, calendar, up?)
|
||||
end
|
||||
|
||||
defp reduce(x, y, {:cont, acc}, fun, calendar, up? = false) when x >= y do
|
||||
reduce(x - 1, y, fun.(date_from_iso_days(x, calendar), acc), fun, calendar, up?)
|
||||
end
|
||||
|
||||
defp reduce(_, _, {:cont, acc}, _fun, _calendar, _up) do
|
||||
{:done, acc}
|
||||
end
|
||||
|
||||
defp date_from_iso_days(days, Calendar.ISO) do
|
||||
{year, month, day} = Calendar.ISO.date_from_iso_days(days)
|
||||
%Date{year: year, month: month, day: day, calendar: Calendar.ISO}
|
||||
end
|
||||
|
||||
defp date_from_iso_days(days, calendar) do
|
||||
{year, month, day, _, _, _, _} =
|
||||
calendar.naive_datetime_from_iso_days({days, {0, 86_400_000_000}})
|
||||
|
||||
%Date{year: year, month: month, day: day, calendar: calendar}
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect do
|
||||
def inspect(%Date.Range{first: first, last: last}, _) do
|
||||
"#DateRange<" <> inspect(first) <> ", " <> inspect(last) <> ">"
|
||||
end
|
||||
end
|
||||
end
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@@ -1,960 +0,0 @@
|
||||
defmodule NaiveDateTime do
|
||||
@moduledoc """
|
||||
A NaiveDateTime struct (without a time zone) and functions.
|
||||
|
||||
The NaiveDateTime struct contains the fields year, month, day, hour,
|
||||
minute, second, microsecond and calendar. New naive datetimes can be
|
||||
built with the `new/2` and `new/8` functions or using the
|
||||
`~N` (see `Kernel.sigil_N/2`) sigil:
|
||||
|
||||
iex> ~N[2000-01-01 23:00:07]
|
||||
~N[2000-01-01 23:00:07]
|
||||
|
||||
The date and time fields in the struct can be accessed directly:
|
||||
|
||||
iex> naive = ~N[2000-01-01 23:00:07]
|
||||
iex> naive.year
|
||||
2000
|
||||
iex> naive.second
|
||||
7
|
||||
|
||||
We call them "naive" because this datetime representation does not
|
||||
have a time zone. This means the datetime may not actually exist in
|
||||
certain areas in the world even though it is valid.
|
||||
|
||||
For example, when daylight saving changes are applied by a region,
|
||||
the clock typically moves forward or backward by one hour. This means
|
||||
certain datetimes never occur or may occur more than once. Since
|
||||
`NaiveDateTime` is not validated against a time zone, such errors
|
||||
would go unnoticed.
|
||||
|
||||
Developers should avoid creating the NaiveDateTime structs directly
|
||||
and instead, rely on the functions provided by this module as well
|
||||
as the ones in third-party calendar libraries.
|
||||
|
||||
## Comparing naive date times
|
||||
|
||||
Comparisons in Elixir using `==/2`, `>/2`, `</2` and similar are structural
|
||||
and based on the `NaiveDateTime` struct fields. For proper comparison
|
||||
between naive datetimes, use the `compare/2` function.
|
||||
|
||||
## Using epochs
|
||||
|
||||
The `add/3` and `diff/3` functions can be used for computing with
|
||||
date times or retrieving the number of seconds between instants.
|
||||
For example, if there is an interest in computing the number of
|
||||
seconds from the Unix epoch (1970-01-01 00:00:00):
|
||||
|
||||
iex> NaiveDateTime.diff(~N[2010-04-17 14:00:00], ~N[1970-01-01 00:00:00])
|
||||
1271512800
|
||||
|
||||
iex> NaiveDateTime.add(~N[1970-01-01 00:00:00], 1_271_512_800)
|
||||
~N[2010-04-17 14:00:00]
|
||||
|
||||
Those functions are optimized to deal with common epochs, such
|
||||
as the Unix Epoch above or the Gregorian Epoch (0000-01-01 00:00:00).
|
||||
"""
|
||||
|
||||
@enforce_keys [:year, :month, :day, :hour, :minute, :second]
|
||||
defstruct [
|
||||
:year,
|
||||
:month,
|
||||
:day,
|
||||
:hour,
|
||||
:minute,
|
||||
:second,
|
||||
microsecond: {0, 0},
|
||||
calendar: Calendar.ISO
|
||||
]
|
||||
|
||||
@type t :: %__MODULE__{
|
||||
year: Calendar.year(),
|
||||
month: Calendar.month(),
|
||||
day: Calendar.day(),
|
||||
calendar: Calendar.calendar(),
|
||||
hour: Calendar.hour(),
|
||||
minute: Calendar.minute(),
|
||||
second: Calendar.second(),
|
||||
microsecond: Calendar.microsecond()
|
||||
}
|
||||
|
||||
@doc """
|
||||
Returns the current naive datetime in UTC.
|
||||
|
||||
Prefer using `DateTime.utc_now/0` when possible as, opposite
|
||||
to `NaiveDateTime`, it will keep the time zone information.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> naive_datetime = NaiveDateTime.utc_now()
|
||||
iex> naive_datetime.year >= 2016
|
||||
true
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec utc_now(Calendar.calendar()) :: t
|
||||
def utc_now(calendar \\ Calendar.ISO)
|
||||
|
||||
def utc_now(Calendar.ISO) do
|
||||
{:ok, {year, month, day}, {hour, minute, second}, microsecond} =
|
||||
Calendar.ISO.from_unix(:os.system_time(), :native)
|
||||
|
||||
%NaiveDateTime{
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond,
|
||||
calendar: Calendar.ISO
|
||||
}
|
||||
end
|
||||
|
||||
def utc_now(calendar) do
|
||||
calendar
|
||||
|> DateTime.utc_now()
|
||||
|> DateTime.to_naive()
|
||||
end
|
||||
|
||||
@doc """
|
||||
Builds a new ISO naive datetime.
|
||||
|
||||
Expects all values to be integers. Returns `{:ok, naive_datetime}`
|
||||
if each entry fits its appropriate range, returns `{:error, reason}`
|
||||
otherwise.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> NaiveDateTime.new(2000, 1, 1, 0, 0, 0)
|
||||
{:ok, ~N[2000-01-01 00:00:00]}
|
||||
iex> NaiveDateTime.new(2000, 13, 1, 0, 0, 0)
|
||||
{:error, :invalid_date}
|
||||
iex> NaiveDateTime.new(2000, 2, 29, 0, 0, 0)
|
||||
{:ok, ~N[2000-02-29 00:00:00]}
|
||||
iex> NaiveDateTime.new(2000, 2, 30, 0, 0, 0)
|
||||
{:error, :invalid_date}
|
||||
iex> NaiveDateTime.new(2001, 2, 29, 0, 0, 0)
|
||||
{:error, :invalid_date}
|
||||
|
||||
iex> NaiveDateTime.new(2000, 1, 1, 23, 59, 59, {0, 1})
|
||||
{:ok, ~N[2000-01-01 23:59:59.0]}
|
||||
iex> NaiveDateTime.new(2000, 1, 1, 23, 59, 59, 999_999)
|
||||
{:ok, ~N[2000-01-01 23:59:59.999999]}
|
||||
iex> NaiveDateTime.new(2000, 1, 1, 24, 59, 59, 999_999)
|
||||
{:error, :invalid_time}
|
||||
iex> NaiveDateTime.new(2000, 1, 1, 23, 60, 59, 999_999)
|
||||
{:error, :invalid_time}
|
||||
iex> NaiveDateTime.new(2000, 1, 1, 23, 59, 60, 999_999)
|
||||
{:error, :invalid_time}
|
||||
iex> NaiveDateTime.new(2000, 1, 1, 23, 59, 59, 1_000_000)
|
||||
{:error, :invalid_time}
|
||||
|
||||
iex> NaiveDateTime.new(2000, 1, 1, 23, 59, 59, {0, 1}, Calendar.ISO)
|
||||
{:ok, ~N[2000-01-01 23:59:59.0]}
|
||||
|
||||
"""
|
||||
@spec new(
|
||||
Calendar.year(),
|
||||
Calendar.month(),
|
||||
Calendar.day(),
|
||||
Calendar.hour(),
|
||||
Calendar.minute(),
|
||||
Calendar.second(),
|
||||
Calendar.microsecond(),
|
||||
Calendar.calendar()
|
||||
) :: {:ok, t} | {:error, atom}
|
||||
def new(year, month, day, hour, minute, second, microsecond \\ {0, 0}, calendar \\ Calendar.ISO)
|
||||
|
||||
def new(year, month, day, hour, minute, second, microsecond, calendar)
|
||||
when is_integer(microsecond) do
|
||||
new(year, month, day, hour, minute, second, {microsecond, 6}, calendar)
|
||||
end
|
||||
|
||||
def new(year, month, day, hour, minute, second, microsecond, calendar) do
|
||||
cond do
|
||||
not calendar.valid_date?(year, month, day) ->
|
||||
{:error, :invalid_date}
|
||||
|
||||
not calendar.valid_time?(hour, minute, second, microsecond) ->
|
||||
{:error, :invalid_time}
|
||||
|
||||
true ->
|
||||
naive_datetime = %NaiveDateTime{
|
||||
calendar: calendar,
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
}
|
||||
|
||||
{:ok, naive_datetime}
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Builds a naive datetime from date and time structs.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> NaiveDateTime.new(~D[2010-01-13], ~T[23:00:07.005])
|
||||
{:ok, ~N[2010-01-13 23:00:07.005]}
|
||||
|
||||
"""
|
||||
@spec new(Date.t(), Time.t()) :: {:ok, t}
|
||||
def new(date, time)
|
||||
|
||||
def new(%Date{calendar: calendar} = date, %Time{calendar: calendar} = time) do
|
||||
%{year: year, month: month, day: day} = date
|
||||
%{hour: hour, minute: minute, second: second, microsecond: microsecond} = time
|
||||
|
||||
naive_datetime = %NaiveDateTime{
|
||||
calendar: calendar,
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
}
|
||||
|
||||
{:ok, naive_datetime}
|
||||
end
|
||||
|
||||
@doc """
|
||||
Adds a specified amount of time to a `NaiveDateTime`.
|
||||
|
||||
Accepts an `amount_to_add` in any `unit` available from `t:System.time_unit/0`.
|
||||
Negative values will move backwards in time.
|
||||
|
||||
## Examples
|
||||
|
||||
# adds seconds by default
|
||||
iex> NaiveDateTime.add(~N[2014-10-02 00:29:10], 2)
|
||||
~N[2014-10-02 00:29:12]
|
||||
|
||||
# accepts negative offsets
|
||||
iex> NaiveDateTime.add(~N[2014-10-02 00:29:10], -2)
|
||||
~N[2014-10-02 00:29:08]
|
||||
|
||||
# can work with other units
|
||||
iex> NaiveDateTime.add(~N[2014-10-02 00:29:10], 2_000, :millisecond)
|
||||
~N[2014-10-02 00:29:12]
|
||||
|
||||
# keeps the same precision
|
||||
iex> NaiveDateTime.add(~N[2014-10-02 00:29:10.021], 21, :second)
|
||||
~N[2014-10-02 00:29:31.021]
|
||||
|
||||
# changes below the precision will not be visible
|
||||
iex> hidden = NaiveDateTime.add(~N[2014-10-02 00:29:10], 21, :millisecond)
|
||||
iex> hidden.microsecond # ~N[2014-10-02 00:29:10]
|
||||
{21000, 0}
|
||||
|
||||
# from Gregorian seconds
|
||||
iex> NaiveDateTime.add(~N[0000-01-01 00:00:00], 63_579_428_950)
|
||||
~N[2014-10-02 00:29:10]
|
||||
|
||||
Passing a `DateTime` automatically converts it to `NaiveDateTime`,
|
||||
discarding the time zone information:
|
||||
|
||||
iex> dt = %DateTime{year: 2000, month: 2, day: 29, zone_abbr: "CET",
|
||||
...> hour: 23, minute: 0, second: 7, microsecond: {0, 0},
|
||||
...> utc_offset: 3600, std_offset: 0, time_zone: "Europe/Warsaw"}
|
||||
iex> NaiveDateTime.add(dt, 21, :second)
|
||||
~N[2000-02-29 23:00:28]
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec add(Calendar.naive_datetime(), integer, System.time_unit()) :: t
|
||||
def add(
|
||||
%{microsecond: {_, precision}, calendar: calendar} = naive_datetime,
|
||||
amount_to_add,
|
||||
unit \\ :second
|
||||
)
|
||||
when is_integer(amount_to_add) do
|
||||
ppd = System.convert_time_unit(86400, :second, unit)
|
||||
|
||||
naive_datetime
|
||||
|> to_iso_days()
|
||||
|> Calendar.ISO.add_day_fraction_to_iso_days(amount_to_add, ppd)
|
||||
|> from_iso_days(calendar, precision)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Subtracts `naive_datetime2` from `naive_datetime1`.
|
||||
|
||||
The answer can be returned in any `unit` available from `t:System.time_unit/0`.
|
||||
|
||||
This function returns the difference in seconds where seconds are measured
|
||||
according to `Calendar.ISO`.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> NaiveDateTime.diff(~N[2014-10-02 00:29:12], ~N[2014-10-02 00:29:10])
|
||||
2
|
||||
iex> NaiveDateTime.diff(~N[2014-10-02 00:29:12], ~N[2014-10-02 00:29:10], :microsecond)
|
||||
2_000_000
|
||||
iex> NaiveDateTime.diff(~N[2014-10-02 00:29:10.042], ~N[2014-10-02 00:29:10.021], :millisecond)
|
||||
21
|
||||
iex> NaiveDateTime.diff(~N[2014-10-02 00:29:10], ~N[2014-10-02 00:29:12])
|
||||
-2
|
||||
iex> NaiveDateTime.diff(~N[-0001-10-02 00:29:10], ~N[-0001-10-02 00:29:12])
|
||||
-2
|
||||
|
||||
# to Gregorian seconds
|
||||
iex> NaiveDateTime.diff(~N[2014-10-02 00:29:10], ~N[0000-01-01 00:00:00])
|
||||
63579428950
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec diff(Calendar.naive_datetime(), Calendar.naive_datetime(), System.time_unit()) :: integer
|
||||
def diff(
|
||||
%{calendar: calendar1} = naive_datetime1,
|
||||
%{calendar: calendar2} = naive_datetime2,
|
||||
unit \\ :second
|
||||
) do
|
||||
if not Calendar.compatible_calendars?(calendar1, calendar2) do
|
||||
raise ArgumentError,
|
||||
"cannot calculate the difference between #{inspect(naive_datetime1)} and " <>
|
||||
"#{inspect(naive_datetime2)} because their calendars are not compatible " <>
|
||||
"and thus the result would be ambiguous"
|
||||
end
|
||||
|
||||
units1 = naive_datetime1 |> to_iso_days() |> Calendar.ISO.iso_days_to_unit(unit)
|
||||
units2 = naive_datetime2 |> to_iso_days() |> Calendar.ISO.iso_days_to_unit(unit)
|
||||
units1 - units2
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the given naive datetime with the microsecond field truncated to the
|
||||
given precision (`:microsecond`, `:millisecond` or `:second`).
|
||||
|
||||
The given naive datetime is returned unchanged if it already has lower precision
|
||||
than the given precision.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> NaiveDateTime.truncate(~N[2017-11-06 00:23:51.123456], :microsecond)
|
||||
~N[2017-11-06 00:23:51.123456]
|
||||
|
||||
iex> NaiveDateTime.truncate(~N[2017-11-06 00:23:51.123456], :millisecond)
|
||||
~N[2017-11-06 00:23:51.123]
|
||||
|
||||
iex> NaiveDateTime.truncate(~N[2017-11-06 00:23:51.123456], :second)
|
||||
~N[2017-11-06 00:23:51]
|
||||
|
||||
"""
|
||||
@doc since: "1.6.0"
|
||||
@spec truncate(t(), :microsecond | :millisecond | :second) :: t()
|
||||
def truncate(%NaiveDateTime{microsecond: microsecond} = naive_datetime, precision) do
|
||||
%{naive_datetime | microsecond: Calendar.truncate(microsecond, precision)}
|
||||
end
|
||||
|
||||
def truncate(
|
||||
%{
|
||||
calendar: calendar,
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
},
|
||||
precision
|
||||
) do
|
||||
%NaiveDateTime{
|
||||
calendar: calendar,
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: Calendar.truncate(microsecond, precision)
|
||||
}
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts a `NaiveDateTime` into a `Date`.
|
||||
|
||||
Because `Date` does not hold time information,
|
||||
data will be lost during the conversion.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> NaiveDateTime.to_date(~N[2002-01-13 23:00:07])
|
||||
~D[2002-01-13]
|
||||
|
||||
"""
|
||||
@spec to_date(Calendar.naive_datetime()) :: Date.t()
|
||||
def to_date(%{
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
calendar: calendar,
|
||||
hour: _,
|
||||
minute: _,
|
||||
second: _,
|
||||
microsecond: _
|
||||
}) do
|
||||
%Date{year: year, month: month, day: day, calendar: calendar}
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts a `NaiveDateTime` into `Time`.
|
||||
|
||||
Because `Time` does not hold date information,
|
||||
data will be lost during the conversion.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> NaiveDateTime.to_time(~N[2002-01-13 23:00:07])
|
||||
~T[23:00:07]
|
||||
|
||||
"""
|
||||
@spec to_time(Calendar.naive_datetime()) :: Time.t()
|
||||
def to_time(%{
|
||||
year: _,
|
||||
month: _,
|
||||
day: _,
|
||||
calendar: calendar,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
}) do
|
||||
%Time{
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond,
|
||||
calendar: calendar
|
||||
}
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts the given naive datetime to a string according to its calendar.
|
||||
|
||||
### Examples
|
||||
|
||||
iex> NaiveDateTime.to_string(~N[2000-02-28 23:00:13])
|
||||
"2000-02-28 23:00:13"
|
||||
iex> NaiveDateTime.to_string(~N[2000-02-28 23:00:13.001])
|
||||
"2000-02-28 23:00:13.001"
|
||||
iex> NaiveDateTime.to_string(~N[-0100-12-15 03:20:31])
|
||||
"-0100-12-15 03:20:31"
|
||||
|
||||
This function can also be used to convert a DateTime to a string without
|
||||
the time zone information:
|
||||
|
||||
iex> dt = %DateTime{year: 2000, month: 2, day: 29, zone_abbr: "CET",
|
||||
...> hour: 23, minute: 0, second: 7, microsecond: {0, 0},
|
||||
...> utc_offset: 3600, std_offset: 0, time_zone: "Europe/Warsaw"}
|
||||
iex> NaiveDateTime.to_string(dt)
|
||||
"2000-02-29 23:00:07"
|
||||
|
||||
"""
|
||||
@spec to_string(Calendar.naive_datetime()) :: String.t()
|
||||
def to_string(%{calendar: calendar} = naive_datetime) do
|
||||
%{
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
} = naive_datetime
|
||||
|
||||
calendar.naive_datetime_to_string(year, month, day, hour, minute, second, microsecond)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Parses the extended "Date and time of day" format described by
|
||||
[ISO 8601:2004](https://en.wikipedia.org/wiki/ISO_8601).
|
||||
|
||||
Time zone offset may be included in the string but they will be
|
||||
simply discarded as such information is not included in naive date
|
||||
times.
|
||||
|
||||
As specified in the standard, the separator "T" may be omitted if
|
||||
desired as there is no ambiguity within this function.
|
||||
|
||||
The year parsed by this function is limited to four digits and,
|
||||
while ISO 8601 allows datetimes to specify 24:00:00 as the zero
|
||||
hour of the next day, this notation is not supported by Elixir.
|
||||
Note leap seconds are not supported by the built-in Calendar.ISO.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23 23:50:07")
|
||||
{:ok, ~N[2015-01-23 23:50:07]}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23T23:50:07")
|
||||
{:ok, ~N[2015-01-23 23:50:07]}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23T23:50:07Z")
|
||||
{:ok, ~N[2015-01-23 23:50:07]}
|
||||
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23 23:50:07.0")
|
||||
{:ok, ~N[2015-01-23 23:50:07.0]}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23 23:50:07,0123456")
|
||||
{:ok, ~N[2015-01-23 23:50:07.012345]}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23 23:50:07.0123456")
|
||||
{:ok, ~N[2015-01-23 23:50:07.012345]}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23T23:50:07.123Z")
|
||||
{:ok, ~N[2015-01-23 23:50:07.123]}
|
||||
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23P23:50:07")
|
||||
{:error, :invalid_format}
|
||||
iex> NaiveDateTime.from_iso8601("2015:01:23 23-50-07")
|
||||
{:error, :invalid_format}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23 23:50:07A")
|
||||
{:error, :invalid_format}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23 23:50:61")
|
||||
{:error, :invalid_time}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-32 23:50:07")
|
||||
{:error, :invalid_date}
|
||||
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23T23:50:07.123+02:30")
|
||||
{:ok, ~N[2015-01-23 23:50:07.123]}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23T23:50:07.123+00:00")
|
||||
{:ok, ~N[2015-01-23 23:50:07.123]}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23T23:50:07.123-02:30")
|
||||
{:ok, ~N[2015-01-23 23:50:07.123]}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23T23:50:07.123-00:00")
|
||||
{:error, :invalid_format}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23T23:50:07.123-00:60")
|
||||
{:error, :invalid_format}
|
||||
iex> NaiveDateTime.from_iso8601("2015-01-23T23:50:07.123-24:00")
|
||||
{:error, :invalid_format}
|
||||
|
||||
"""
|
||||
@spec from_iso8601(String.t(), Calendar.calendar()) :: {:ok, t} | {:error, atom}
|
||||
def from_iso8601(string, calendar \\ Calendar.ISO)
|
||||
|
||||
def from_iso8601(<<?-, rest::binary>>, calendar) do
|
||||
with {:ok, %{year: year} = naive_datetime} <- raw_from_iso8601(rest, calendar) do
|
||||
{:ok, %{naive_datetime | year: -year}}
|
||||
end
|
||||
end
|
||||
|
||||
def from_iso8601(<<rest::binary>>, calendar) do
|
||||
raw_from_iso8601(rest, calendar)
|
||||
end
|
||||
|
||||
@sep [?\s, ?T]
|
||||
[match_date, guard_date, read_date] = Calendar.ISO.__match_date__()
|
||||
[match_time, guard_time, read_time] = Calendar.ISO.__match_time__()
|
||||
|
||||
defp raw_from_iso8601(string, calendar) do
|
||||
with <<unquote(match_date), sep, unquote(match_time), rest::binary>> <- string,
|
||||
true <- unquote(guard_date) and sep in @sep and unquote(guard_time),
|
||||
{microsec, rest} <- Calendar.ISO.parse_microsecond(rest),
|
||||
{_offset, ""} <- Calendar.ISO.parse_offset(rest) do
|
||||
{year, month, day} = unquote(read_date)
|
||||
{hour, min, sec} = unquote(read_time)
|
||||
|
||||
with {:ok, iso_naive_dt} <- new(year, month, day, hour, min, sec, microsec, Calendar.ISO) do
|
||||
convert(iso_naive_dt, calendar)
|
||||
end
|
||||
else
|
||||
_ -> {:error, :invalid_format}
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Parses the extended "Date and time of day" format described by
|
||||
[ISO 8601:2004](https://en.wikipedia.org/wiki/ISO_8601).
|
||||
|
||||
Raises if the format is invalid.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> NaiveDateTime.from_iso8601!("2015-01-23T23:50:07.123Z")
|
||||
~N[2015-01-23 23:50:07.123]
|
||||
iex> NaiveDateTime.from_iso8601!("2015-01-23T23:50:07,123Z")
|
||||
~N[2015-01-23 23:50:07.123]
|
||||
iex> NaiveDateTime.from_iso8601!("2015-01-23P23:50:07")
|
||||
** (ArgumentError) cannot parse "2015-01-23P23:50:07" as naive datetime, reason: :invalid_format
|
||||
|
||||
"""
|
||||
@spec from_iso8601!(String.t(), Calendar.calendar()) :: t
|
||||
def from_iso8601!(string, calendar \\ Calendar.ISO) do
|
||||
case from_iso8601(string, calendar) do
|
||||
{:ok, value} ->
|
||||
value
|
||||
|
||||
{:error, reason} ->
|
||||
raise ArgumentError,
|
||||
"cannot parse #{inspect(string)} as naive datetime, reason: #{inspect(reason)}"
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts the given naive datetime to
|
||||
[ISO 8601:2004](https://en.wikipedia.org/wiki/ISO_8601).
|
||||
|
||||
By default, `NaiveDateTime.to_iso8601/2` returns naive datetimes formatted in the "extended"
|
||||
format, for human readability. It also supports the "basic" format through passing the `:basic` option.
|
||||
|
||||
Only supports converting naive datetimes which are in the ISO calendar,
|
||||
attempting to convert naive datetimes from other calendars will raise.
|
||||
|
||||
### Examples
|
||||
|
||||
iex> NaiveDateTime.to_iso8601(~N[2000-02-28 23:00:13])
|
||||
"2000-02-28T23:00:13"
|
||||
|
||||
iex> NaiveDateTime.to_iso8601(~N[2000-02-28 23:00:13.001])
|
||||
"2000-02-28T23:00:13.001"
|
||||
|
||||
iex> NaiveDateTime.to_iso8601(~N[2000-02-28 23:00:13.001], :basic)
|
||||
"20000228T230013.001"
|
||||
|
||||
This function can also be used to convert a DateTime to ISO 8601 without
|
||||
the time zone information:
|
||||
|
||||
iex> dt = %DateTime{year: 2000, month: 2, day: 29, zone_abbr: "CET",
|
||||
...> hour: 23, minute: 0, second: 7, microsecond: {0, 0},
|
||||
...> utc_offset: 3600, std_offset: 0, time_zone: "Europe/Warsaw"}
|
||||
iex> NaiveDateTime.to_iso8601(dt)
|
||||
"2000-02-29T23:00:07"
|
||||
|
||||
"""
|
||||
@spec to_iso8601(Calendar.naive_datetime(), :basic | :extended) :: String.t()
|
||||
def to_iso8601(naive_datetime, format \\ :extended)
|
||||
|
||||
def to_iso8601(%{calendar: Calendar.ISO} = naive_datetime, format)
|
||||
when format in [:basic, :extended] do
|
||||
%{
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
} = naive_datetime
|
||||
|
||||
Calendar.ISO.naive_datetime_to_iso8601(
|
||||
year,
|
||||
month,
|
||||
day,
|
||||
hour,
|
||||
minute,
|
||||
second,
|
||||
microsecond,
|
||||
format
|
||||
)
|
||||
end
|
||||
|
||||
def to_iso8601(%{calendar: _} = naive_datetime, format) when format in [:basic, :extended] do
|
||||
naive_datetime
|
||||
|> convert!(Calendar.ISO)
|
||||
|> to_iso8601(format)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts a `NaiveDateTime` struct to an Erlang datetime tuple.
|
||||
|
||||
Only supports converting naive datetimes which are in the ISO calendar,
|
||||
attempting to convert naive datetimes from other calendars will raise.
|
||||
|
||||
WARNING: Loss of precision may occur, as Erlang time tuples only store
|
||||
hour/minute/second.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> NaiveDateTime.to_erl(~N[2000-01-01 13:30:15])
|
||||
{{2000, 1, 1}, {13, 30, 15}}
|
||||
|
||||
This function can also be used to convert a DateTime to a erl format
|
||||
without the time zone information:
|
||||
|
||||
iex> dt = %DateTime{year: 2000, month: 2, day: 29, zone_abbr: "CET",
|
||||
...> hour: 23, minute: 0, second: 7, microsecond: {0, 0},
|
||||
...> utc_offset: 3600, std_offset: 0, time_zone: "Europe/Warsaw"}
|
||||
iex> NaiveDateTime.to_erl(dt)
|
||||
{{2000, 2, 29}, {23, 00, 07}}
|
||||
|
||||
"""
|
||||
@spec to_erl(Calendar.naive_datetime()) :: :calendar.datetime()
|
||||
def to_erl(%{calendar: _} = naive_datetime) do
|
||||
%{year: year, month: month, day: day, hour: hour, minute: minute, second: second} =
|
||||
convert!(naive_datetime, Calendar.ISO)
|
||||
|
||||
{{year, month, day}, {hour, minute, second}}
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts an Erlang datetime tuple to a `NaiveDateTime` struct.
|
||||
|
||||
Attempting to convert an invalid ISO calendar date will produce an error tuple.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> NaiveDateTime.from_erl({{2000, 1, 1}, {13, 30, 15}})
|
||||
{:ok, ~N[2000-01-01 13:30:15]}
|
||||
iex> NaiveDateTime.from_erl({{2000, 1, 1}, {13, 30, 15}}, {5000, 3})
|
||||
{:ok, ~N[2000-01-01 13:30:15.005]}
|
||||
iex> NaiveDateTime.from_erl({{2000, 13, 1}, {13, 30, 15}})
|
||||
{:error, :invalid_date}
|
||||
iex> NaiveDateTime.from_erl({{2000, 13, 1}, {13, 30, 15}})
|
||||
{:error, :invalid_date}
|
||||
|
||||
"""
|
||||
@spec from_erl(:calendar.datetime(), Calendar.microsecond(), Calendar.calendar()) ::
|
||||
{:ok, t} | {:error, atom}
|
||||
def from_erl(tuple, microsecond \\ {0, 0}, calendar \\ Calendar.ISO)
|
||||
|
||||
def from_erl({{year, month, day}, {hour, minute, second}}, microsecond, calendar) do
|
||||
with {:ok, iso_naive_dt} <- new(year, month, day, hour, minute, second, microsecond),
|
||||
do: convert(iso_naive_dt, calendar)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts an Erlang datetime tuple to a `NaiveDateTime` struct.
|
||||
|
||||
Raises if the datetime is invalid.
|
||||
Attempting to convert an invalid ISO calendar date will produce an error tuple.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> NaiveDateTime.from_erl!({{2000, 1, 1}, {13, 30, 15}})
|
||||
~N[2000-01-01 13:30:15]
|
||||
iex> NaiveDateTime.from_erl!({{2000, 1, 1}, {13, 30, 15}}, {5000, 3})
|
||||
~N[2000-01-01 13:30:15.005]
|
||||
iex> NaiveDateTime.from_erl!({{2000, 13, 1}, {13, 30, 15}})
|
||||
** (ArgumentError) cannot convert {{2000, 13, 1}, {13, 30, 15}} to naive datetime, reason: :invalid_date
|
||||
|
||||
"""
|
||||
@spec from_erl!(:calendar.datetime(), Calendar.microsecond(), Calendar.calendar()) :: t
|
||||
def from_erl!(tuple, microsecond \\ {0, 0}, calendar \\ Calendar.ISO) do
|
||||
case from_erl(tuple, microsecond, calendar) do
|
||||
{:ok, value} ->
|
||||
value
|
||||
|
||||
{:error, reason} ->
|
||||
raise ArgumentError,
|
||||
"cannot convert #{inspect(tuple)} to naive datetime, reason: #{inspect(reason)}"
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Compares two `NaiveDateTime` structs.
|
||||
|
||||
Returns `:gt` if first is later than the second
|
||||
and `:lt` for vice versa. If the two NaiveDateTime
|
||||
are equal `:eq` is returned.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> NaiveDateTime.compare(~N[2016-04-16 13:30:15], ~N[2016-04-28 16:19:25])
|
||||
:lt
|
||||
iex> NaiveDateTime.compare(~N[2016-04-16 13:30:15.1], ~N[2016-04-16 13:30:15.01])
|
||||
:gt
|
||||
|
||||
This function can also be used to compare a DateTime without
|
||||
the time zone information:
|
||||
|
||||
iex> dt = %DateTime{year: 2000, month: 2, day: 29, zone_abbr: "CET",
|
||||
...> hour: 23, minute: 0, second: 7, microsecond: {0, 0},
|
||||
...> utc_offset: 3600, std_offset: 0, time_zone: "Europe/Warsaw"}
|
||||
iex> NaiveDateTime.compare(dt, ~N[2000-02-29 23:00:07])
|
||||
:eq
|
||||
iex> NaiveDateTime.compare(dt, ~N[2000-01-29 23:00:07])
|
||||
:gt
|
||||
iex> NaiveDateTime.compare(dt, ~N[2000-03-29 23:00:07])
|
||||
:lt
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec compare(Calendar.naive_datetime(), Calendar.naive_datetime()) :: :lt | :eq | :gt
|
||||
def compare(%{calendar: calendar1} = naive_datetime1, %{calendar: calendar2} = naive_datetime2) do
|
||||
if Calendar.compatible_calendars?(calendar1, calendar2) do
|
||||
case {to_iso_days(naive_datetime1), to_iso_days(naive_datetime2)} do
|
||||
{first, second} when first > second -> :gt
|
||||
{first, second} when first < second -> :lt
|
||||
_ -> :eq
|
||||
end
|
||||
else
|
||||
raise ArgumentError, """
|
||||
cannot compare #{inspect(naive_datetime1)} with #{inspect(naive_datetime2)}.
|
||||
|
||||
This comparison would be ambiguous as their calendars have incompatible day rollover moments.
|
||||
Specify an exact time of day (using `DateTime`s) to resolve this ambiguity
|
||||
"""
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts the given `naive_datetime` from one calendar to another.
|
||||
|
||||
If it is not possible to convert unambiguously between the calendars
|
||||
(see `Calendar.compatible_calendars?/2`), an `{:error, :incompatible_calendars}` tuple
|
||||
is returned.
|
||||
|
||||
## Examples
|
||||
|
||||
Imagine someone implements `Calendar.Holocene`, a calendar based on the
|
||||
Gregorian calendar that adds exactly 10,000 years to the current Gregorian
|
||||
year:
|
||||
|
||||
iex> NaiveDateTime.convert(~N[2000-01-01 13:30:15], Calendar.Holocene)
|
||||
{:ok, %NaiveDateTime{calendar: Calendar.Holocene, year: 12000, month: 1, day: 1,
|
||||
hour: 13, minute: 30, second: 15, microsecond: {0, 0}}}
|
||||
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
@spec convert(Calendar.naive_datetime(), Calendar.calendar()) ::
|
||||
{:ok, t} | {:error, :incompatible_calendars}
|
||||
|
||||
# Keep it multiline for proper function clause errors.
|
||||
def convert(
|
||||
%{
|
||||
calendar: calendar,
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
},
|
||||
calendar
|
||||
) do
|
||||
naive_datetime = %NaiveDateTime{
|
||||
calendar: calendar,
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
}
|
||||
|
||||
{:ok, naive_datetime}
|
||||
end
|
||||
|
||||
def convert(%{calendar: ndt_calendar, microsecond: {_, precision}} = naive_datetime, calendar) do
|
||||
if Calendar.compatible_calendars?(ndt_calendar, calendar) do
|
||||
result_naive_datetime =
|
||||
naive_datetime
|
||||
|> to_iso_days
|
||||
|> from_iso_days(calendar, precision)
|
||||
|
||||
{:ok, result_naive_datetime}
|
||||
else
|
||||
{:error, :incompatible_calendars}
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts the given `naive_datetime` from one calendar to another.
|
||||
|
||||
If it is not possible to convert unambiguously between the calendars
|
||||
(see `Calendar.compatible_calendars?/2`), an ArgumentError is raised.
|
||||
|
||||
## Examples
|
||||
|
||||
Imagine someone implements `Calendar.Holocene`, a calendar based on the
|
||||
Gregorian calendar that adds exactly 10,000 years to the current Gregorian
|
||||
year:
|
||||
|
||||
iex> NaiveDateTime.convert!(~N[2000-01-01 13:30:15], Calendar.Holocene)
|
||||
%NaiveDateTime{calendar: Calendar.Holocene, year: 12000, month: 1, day: 1,
|
||||
hour: 13, minute: 30, second: 15, microsecond: {0, 0}}
|
||||
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
@spec convert!(Calendar.naive_datetime(), Calendar.calendar()) :: t
|
||||
def convert!(naive_datetime, calendar) do
|
||||
case convert(naive_datetime, calendar) do
|
||||
{:ok, value} ->
|
||||
value
|
||||
|
||||
{:error, :incompatible_calendars} ->
|
||||
raise ArgumentError,
|
||||
"cannot convert #{inspect(naive_datetime)} to target calendar #{inspect(calendar)}, " <>
|
||||
"reason: #{inspect(naive_datetime.calendar)} and #{inspect(calendar)} " <>
|
||||
"have different day rollover moments, making this conversion ambiguous"
|
||||
end
|
||||
end
|
||||
|
||||
## Helpers
|
||||
|
||||
# Keep it multiline for proper function clause errors.
|
||||
defp to_iso_days(%{
|
||||
calendar: calendar,
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
}) do
|
||||
calendar.naive_datetime_to_iso_days(year, month, day, hour, minute, second, microsecond)
|
||||
end
|
||||
|
||||
defp from_iso_days(iso_days, calendar, precision) do
|
||||
{year, month, day, hour, minute, second, {microsecond, _}} =
|
||||
calendar.naive_datetime_from_iso_days(iso_days)
|
||||
|
||||
%NaiveDateTime{
|
||||
calendar: calendar,
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: {microsecond, precision}
|
||||
}
|
||||
end
|
||||
|
||||
defimpl String.Chars do
|
||||
def to_string(naive_datetime) do
|
||||
%{
|
||||
calendar: calendar,
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
} = naive_datetime
|
||||
|
||||
calendar.naive_datetime_to_string(year, month, day, hour, minute, second, microsecond)
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect do
|
||||
def inspect(%{calendar: Calendar.ISO} = naive_datetime, _) do
|
||||
%{
|
||||
year: year,
|
||||
month: month,
|
||||
day: day,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
} = naive_datetime
|
||||
|
||||
formatted =
|
||||
Calendar.ISO.naive_datetime_to_string(year, month, day, hour, minute, second, microsecond)
|
||||
|
||||
"~N[" <> formatted <> "]"
|
||||
end
|
||||
|
||||
def inspect(naive, opts) do
|
||||
Inspect.Any.inspect(naive, opts)
|
||||
end
|
||||
end
|
||||
end
|
||||
@@ -1,712 +0,0 @@
|
||||
defmodule Time do
|
||||
@moduledoc """
|
||||
A Time struct and functions.
|
||||
|
||||
The Time struct contains the fields hour, minute, second and microseconds.
|
||||
New times can be built with the `new/4` function or using the
|
||||
`~T` (see `Kernel.sigil_T/2`) sigil:
|
||||
|
||||
iex> ~T[23:00:07.001]
|
||||
~T[23:00:07.001]
|
||||
|
||||
Both `new/4` and sigil return a struct where the time fields can
|
||||
be accessed directly:
|
||||
|
||||
iex> time = ~T[23:00:07.001]
|
||||
iex> time.hour
|
||||
23
|
||||
iex> time.microsecond
|
||||
{1000, 3}
|
||||
|
||||
The functions on this module work with the `Time` struct as well
|
||||
as any struct that contains the same fields as the `Time` struct,
|
||||
such as `NaiveDateTime` and `DateTime`. Such functions expect
|
||||
`t:Calendar.time/0` in their typespecs (instead of `t:t/0`).
|
||||
|
||||
Developers should avoid creating the Time structs directly
|
||||
and instead rely on the functions provided by this module as well
|
||||
as the ones in third-party calendar libraries.
|
||||
|
||||
## Comparing times
|
||||
|
||||
Comparisons in Elixir using `==/2`, `>/2`, `</2` and similar are structural
|
||||
and based on the `Time` struct fields. For proper comparison between
|
||||
times, use the `compare/2` function.
|
||||
"""
|
||||
|
||||
@enforce_keys [:hour, :minute, :second]
|
||||
defstruct [:hour, :minute, :second, microsecond: {0, 0}, calendar: Calendar.ISO]
|
||||
|
||||
@type t :: %__MODULE__{
|
||||
hour: Calendar.hour(),
|
||||
minute: Calendar.minute(),
|
||||
second: Calendar.second(),
|
||||
microsecond: Calendar.microsecond(),
|
||||
calendar: Calendar.calendar()
|
||||
}
|
||||
|
||||
@parts_per_day 86_400_000_000
|
||||
|
||||
@doc """
|
||||
Returns the current time in UTC.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> time = Time.utc_now()
|
||||
iex> time.hour >= 0
|
||||
true
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec utc_now(Calendar.calendar()) :: t
|
||||
def utc_now(calendar \\ Calendar.ISO) do
|
||||
{:ok, _, time, microsecond} = Calendar.ISO.from_unix(:os.system_time(), :native)
|
||||
{hour, minute, second} = time
|
||||
|
||||
iso_time = %Time{
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond,
|
||||
calendar: Calendar.ISO
|
||||
}
|
||||
|
||||
convert!(iso_time, calendar)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Builds a new time.
|
||||
|
||||
Expects all values to be integers. Returns `{:ok, time}` if each
|
||||
entry fits its appropriate range, returns `{:error, reason}` otherwise.
|
||||
|
||||
Microseconds can also be given with a precision, which must be an
|
||||
integer between 0 and 6.
|
||||
|
||||
The built-in calendar does not support leap seconds.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Time.new(0, 0, 0, 0)
|
||||
{:ok, ~T[00:00:00.000000]}
|
||||
iex> Time.new(23, 59, 59, 999_999)
|
||||
{:ok, ~T[23:59:59.999999]}
|
||||
|
||||
iex> Time.new(24, 59, 59, 999_999)
|
||||
{:error, :invalid_time}
|
||||
iex> Time.new(23, 60, 59, 999_999)
|
||||
{:error, :invalid_time}
|
||||
iex> Time.new(23, 59, 60, 999_999)
|
||||
{:error, :invalid_time}
|
||||
iex> Time.new(23, 59, 59, 1_000_000)
|
||||
{:error, :invalid_time}
|
||||
|
||||
# Invalid precision
|
||||
Time.new(23, 59, 59, {999_999, 10})
|
||||
{:error, :invalid_time}
|
||||
|
||||
"""
|
||||
@spec new(
|
||||
Calendar.hour(),
|
||||
Calendar.minute(),
|
||||
Calendar.second(),
|
||||
Calendar.microsecond() | integer,
|
||||
Calendar.calendar()
|
||||
) :: {:ok, t} | {:error, atom}
|
||||
def new(hour, minute, second, microsecond \\ {0, 0}, calendar \\ Calendar.ISO)
|
||||
|
||||
def new(hour, minute, second, microsecond, calendar) when is_integer(microsecond) do
|
||||
new(hour, minute, second, {microsecond, 6}, calendar)
|
||||
end
|
||||
|
||||
def new(hour, minute, second, {microsecond, precision}, calendar)
|
||||
when is_integer(hour) and is_integer(minute) and is_integer(second) and
|
||||
is_integer(microsecond) and is_integer(precision) do
|
||||
case calendar.valid_time?(hour, minute, second, {microsecond, precision}) do
|
||||
true ->
|
||||
time = %Time{
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: {microsecond, precision},
|
||||
calendar: calendar
|
||||
}
|
||||
|
||||
{:ok, time}
|
||||
|
||||
false ->
|
||||
{:error, :invalid_time}
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts the given `time` to a string.
|
||||
|
||||
### Examples
|
||||
|
||||
iex> Time.to_string(~T[23:00:00])
|
||||
"23:00:00"
|
||||
iex> Time.to_string(~T[23:00:00.001])
|
||||
"23:00:00.001"
|
||||
iex> Time.to_string(~T[23:00:00.123456])
|
||||
"23:00:00.123456"
|
||||
|
||||
iex> Time.to_string(~N[2015-01-01 23:00:00.001])
|
||||
"23:00:00.001"
|
||||
iex> Time.to_string(~N[2015-01-01 23:00:00.123456])
|
||||
"23:00:00.123456"
|
||||
|
||||
"""
|
||||
@spec to_string(Calendar.time()) :: String.t()
|
||||
def to_string(time)
|
||||
|
||||
def to_string(%{
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond,
|
||||
calendar: calendar
|
||||
}) do
|
||||
calendar.time_to_string(hour, minute, second, microsecond)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Parses the extended "Local time" format described by
|
||||
[ISO 8601:2004](https://en.wikipedia.org/wiki/ISO_8601).
|
||||
|
||||
Time zone offset may be included in the string but they will be
|
||||
simply discarded as such information is not included in times.
|
||||
|
||||
As specified in the standard, the separator "T" may be omitted if
|
||||
desired as there is no ambiguity within this function.
|
||||
|
||||
Time representations with reduced accuracy are not supported.
|
||||
|
||||
Note that while ISO 8601 allows times to specify 24:00:00 as the
|
||||
zero hour of the next day, this notation is not supported by Elixir.
|
||||
Leap seconds are not supported as well by the built-in Calendar.ISO.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Time.from_iso8601("23:50:07")
|
||||
{:ok, ~T[23:50:07]}
|
||||
iex> Time.from_iso8601("23:50:07Z")
|
||||
{:ok, ~T[23:50:07]}
|
||||
iex> Time.from_iso8601("T23:50:07Z")
|
||||
{:ok, ~T[23:50:07]}
|
||||
|
||||
iex> Time.from_iso8601("23:50:07,0123456")
|
||||
{:ok, ~T[23:50:07.012345]}
|
||||
iex> Time.from_iso8601("23:50:07.0123456")
|
||||
{:ok, ~T[23:50:07.012345]}
|
||||
iex> Time.from_iso8601("23:50:07.123Z")
|
||||
{:ok, ~T[23:50:07.123]}
|
||||
|
||||
iex> Time.from_iso8601("2015:01:23 23-50-07")
|
||||
{:error, :invalid_format}
|
||||
iex> Time.from_iso8601("23:50:07A")
|
||||
{:error, :invalid_format}
|
||||
iex> Time.from_iso8601("23:50:07.")
|
||||
{:error, :invalid_format}
|
||||
iex> Time.from_iso8601("23:50:61")
|
||||
{:error, :invalid_time}
|
||||
|
||||
"""
|
||||
@spec from_iso8601(String.t(), Calendar.calendar()) :: {:ok, t} | {:error, atom}
|
||||
def from_iso8601(string, calendar \\ Calendar.ISO)
|
||||
|
||||
def from_iso8601(<<?T, rest::binary>>, calendar) do
|
||||
raw_from_iso8601(rest, calendar)
|
||||
end
|
||||
|
||||
def from_iso8601(<<rest::binary>>, calendar) do
|
||||
raw_from_iso8601(rest, calendar)
|
||||
end
|
||||
|
||||
[match_time, guard_time, read_time] = Calendar.ISO.__match_time__()
|
||||
|
||||
defp raw_from_iso8601(string, calendar) do
|
||||
with <<unquote(match_time), rest::binary>> <- string,
|
||||
true <- unquote(guard_time),
|
||||
{microsec, rest} <- Calendar.ISO.parse_microsecond(rest),
|
||||
{_offset, ""} <- Calendar.ISO.parse_offset(rest) do
|
||||
{hour, min, sec} = unquote(read_time)
|
||||
|
||||
with {:ok, utc_time} <- new(hour, min, sec, microsec, Calendar.ISO) do
|
||||
convert(utc_time, calendar)
|
||||
end
|
||||
else
|
||||
_ -> {:error, :invalid_format}
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Parses the extended "Local time" format described by
|
||||
[ISO 8601:2004](https://en.wikipedia.org/wiki/ISO_8601).
|
||||
|
||||
Raises if the format is invalid.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Time.from_iso8601!("23:50:07,123Z")
|
||||
~T[23:50:07.123]
|
||||
iex> Time.from_iso8601!("23:50:07.123Z")
|
||||
~T[23:50:07.123]
|
||||
iex> Time.from_iso8601!("2015:01:23 23-50-07")
|
||||
** (ArgumentError) cannot parse "2015:01:23 23-50-07" as time, reason: :invalid_format
|
||||
|
||||
"""
|
||||
@spec from_iso8601!(String.t(), Calendar.calendar()) :: t
|
||||
def from_iso8601!(string, calendar \\ Calendar.ISO) do
|
||||
case from_iso8601(string, calendar) do
|
||||
{:ok, value} ->
|
||||
value
|
||||
|
||||
{:error, reason} ->
|
||||
raise ArgumentError, "cannot parse #{inspect(string)} as time, reason: #{inspect(reason)}"
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts the given time to
|
||||
[ISO 8601:2004](https://en.wikipedia.org/wiki/ISO_8601).
|
||||
|
||||
By default, `Time.to_iso8601/2` returns times formatted in the "extended"
|
||||
format, for human readability. It also supports the "basic" format through
|
||||
passing the `:basic` option.
|
||||
|
||||
### Examples
|
||||
|
||||
iex> Time.to_iso8601(~T[23:00:13])
|
||||
"23:00:13"
|
||||
|
||||
iex> Time.to_iso8601(~T[23:00:13.001])
|
||||
"23:00:13.001"
|
||||
|
||||
iex> Time.to_iso8601(~T[23:00:13.001], :basic)
|
||||
"230013.001"
|
||||
|
||||
iex> Time.to_iso8601(~N[2010-04-17 23:00:13])
|
||||
"23:00:13"
|
||||
|
||||
"""
|
||||
@spec to_iso8601(Calendar.time(), :extended | :basic) :: String.t()
|
||||
def to_iso8601(time, format \\ :extended)
|
||||
|
||||
def to_iso8601(%{calendar: Calendar.ISO} = time, format) when format in [:extended, :basic] do
|
||||
%{
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
} = time
|
||||
|
||||
Calendar.ISO.time_to_string(hour, minute, second, microsecond, format)
|
||||
end
|
||||
|
||||
def to_iso8601(%{calendar: _} = time, format) when format in [:extended, :basic] do
|
||||
time
|
||||
|> convert!(Calendar.ISO)
|
||||
|> to_iso8601(format)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts given `time` to an Erlang time tuple.
|
||||
|
||||
WARNING: Loss of precision may occur, as Erlang time tuples
|
||||
only contain hours/minutes/seconds.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Time.to_erl(~T[23:30:15.999])
|
||||
{23, 30, 15}
|
||||
|
||||
iex> Time.to_erl(~N[2010-04-17 23:30:15.999])
|
||||
{23, 30, 15}
|
||||
|
||||
"""
|
||||
@spec to_erl(Calendar.time()) :: :calendar.time()
|
||||
def to_erl(time) do
|
||||
%{hour: hour, minute: minute, second: second} = convert!(time, Calendar.ISO)
|
||||
{hour, minute, second}
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts an Erlang time tuple to a `Time` struct.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Time.from_erl({23, 30, 15}, {5000, 3})
|
||||
{:ok, ~T[23:30:15.005]}
|
||||
iex> Time.from_erl({24, 30, 15})
|
||||
{:error, :invalid_time}
|
||||
|
||||
"""
|
||||
@spec from_erl(:calendar.time(), Calendar.microsecond(), Calendar.calendar()) ::
|
||||
{:ok, t} | {:error, atom}
|
||||
def from_erl(tuple, microsecond \\ {0, 0}, calendar \\ Calendar.ISO)
|
||||
|
||||
def from_erl({hour, minute, second}, microsecond, calendar) do
|
||||
with {:ok, time} <- new(hour, minute, second, microsecond, Calendar.ISO),
|
||||
do: convert(time, calendar)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts an Erlang time tuple to a `Time` struct.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Time.from_erl!({23, 30, 15})
|
||||
~T[23:30:15]
|
||||
iex> Time.from_erl!({23, 30, 15}, {5000, 3})
|
||||
~T[23:30:15.005]
|
||||
iex> Time.from_erl!({24, 30, 15})
|
||||
** (ArgumentError) cannot convert {24, 30, 15} to time, reason: :invalid_time
|
||||
|
||||
"""
|
||||
@spec from_erl!(:calendar.time(), Calendar.microsecond(), Calendar.calendar()) :: t
|
||||
def from_erl!(tuple, microsecond \\ {0, 0}, calendar \\ Calendar.ISO) do
|
||||
case from_erl(tuple, microsecond, calendar) do
|
||||
{:ok, value} ->
|
||||
value
|
||||
|
||||
{:error, reason} ->
|
||||
raise ArgumentError,
|
||||
"cannot convert #{inspect(tuple)} to time, reason: #{inspect(reason)}"
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Adds the `number` of `unit`s to the given `time`.
|
||||
|
||||
This function accepts the `number` measured according to `Calendar.ISO`.
|
||||
The time is returned in the same calendar as it was given in.
|
||||
|
||||
Note the result value represents the time of day, meaning that it is cyclic,
|
||||
for instance, it will never go over 24 hours for the ISO calendar.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Time.add(~T[10:00:00], 27000)
|
||||
~T[17:30:00.000000]
|
||||
iex> Time.add(~T[11:00:00.005], 2400)
|
||||
~T[11:40:00.005000]
|
||||
iex> Time.add(~T[00:00:00], 86_399_999, :millisecond)
|
||||
~T[23:59:59.999000]
|
||||
iex> Time.add(~T[17:10:05], 86400)
|
||||
~T[17:10:05.000000]
|
||||
iex> Time.add(~T[23:00:00], -60)
|
||||
~T[22:59:00.000000]
|
||||
|
||||
"""
|
||||
@doc since: "1.6.0"
|
||||
@spec add(Calendar.time(), integer, System.time_unit()) :: t
|
||||
def add(%{calendar: calendar} = time, number, unit \\ :second) when is_integer(number) do
|
||||
number = System.convert_time_unit(number, unit, :microsecond)
|
||||
total = time_to_microseconds(time) + number
|
||||
parts = Integer.mod(total, @parts_per_day)
|
||||
{hour, minute, second, microsecond} = calendar.time_from_day_fraction({parts, @parts_per_day})
|
||||
|
||||
%Time{
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond,
|
||||
calendar: calendar
|
||||
}
|
||||
end
|
||||
|
||||
defp time_to_microseconds(%{
|
||||
calendar: Calendar.ISO,
|
||||
hour: 0,
|
||||
minute: 0,
|
||||
second: 0,
|
||||
microsecond: {0, _}
|
||||
}) do
|
||||
0
|
||||
end
|
||||
|
||||
defp time_to_microseconds(time) do
|
||||
iso_days = {0, to_day_fraction(time)}
|
||||
Calendar.ISO.iso_days_to_unit(iso_days, :microsecond)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Compares two time structs.
|
||||
|
||||
Returns `:gt` if first time is later than the second
|
||||
and `:lt` for vice versa. If the two times are equal
|
||||
`:eq` is returned.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Time.compare(~T[16:04:16], ~T[16:04:28])
|
||||
:lt
|
||||
iex> Time.compare(~T[16:04:16], ~T[16:04:16])
|
||||
:eq
|
||||
iex> Time.compare(~T[16:04:16.01], ~T[16:04:16.001])
|
||||
:gt
|
||||
|
||||
This function can also be used to compare across more
|
||||
complex calendar types by considering only the time fields:
|
||||
|
||||
iex> Time.compare(~N[1900-01-01 16:04:16], ~N[2015-01-01 16:04:16])
|
||||
:eq
|
||||
iex> Time.compare(~N[2015-01-01 16:04:16], ~N[2015-01-01 16:04:28])
|
||||
:lt
|
||||
iex> Time.compare(~N[2015-01-01 16:04:16.01], ~N[2000-01-01 16:04:16.001])
|
||||
:gt
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec compare(Calendar.time(), Calendar.time()) :: :lt | :eq | :gt
|
||||
def compare(%{calendar: calendar} = time1, %{calendar: calendar} = time2) do
|
||||
%{hour: hour1, minute: minute1, second: second1, microsecond: {microsecond1, _}} = time1
|
||||
%{hour: hour2, minute: minute2, second: second2, microsecond: {microsecond2, _}} = time2
|
||||
|
||||
case {{hour1, minute1, second1, microsecond1}, {hour2, minute2, second2, microsecond2}} do
|
||||
{first, second} when first > second -> :gt
|
||||
{first, second} when first < second -> :lt
|
||||
_ -> :eq
|
||||
end
|
||||
end
|
||||
|
||||
def compare(time1, time2) do
|
||||
{parts1, ppd1} = to_day_fraction(time1)
|
||||
{parts2, ppd2} = to_day_fraction(time2)
|
||||
|
||||
case {parts1 * ppd2, parts2 * ppd1} do
|
||||
{first, second} when first > second -> :gt
|
||||
{first, second} when first < second -> :lt
|
||||
_ -> :eq
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts given `time` to a different calendar.
|
||||
|
||||
Returns `{:ok, time}` if the conversion was successful,
|
||||
or `{:error, reason}` if it was not, for some reason.
|
||||
|
||||
## Examples
|
||||
|
||||
Imagine someone implements `Calendar.Holocene`, a calendar based on the
|
||||
Gregorian calendar that adds exactly 10,000 years to the current Gregorian
|
||||
year:
|
||||
|
||||
iex> Time.convert(~T[13:30:15], Calendar.Holocene)
|
||||
{:ok, %Time{calendar: Calendar.Holocene, hour: 13, minute: 30, second: 15, microsecond: {0, 0}}}
|
||||
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
@spec convert(Calendar.time(), Calendar.calendar()) :: {:ok, t} | {:error, atom}
|
||||
|
||||
# Keep it multiline for proper function clause errors.
|
||||
def convert(
|
||||
%{
|
||||
calendar: calendar,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
},
|
||||
calendar
|
||||
) do
|
||||
time = %Time{
|
||||
calendar: calendar,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond
|
||||
}
|
||||
|
||||
{:ok, time}
|
||||
end
|
||||
|
||||
def convert(%{microsecond: {_, precision}} = time, calendar) do
|
||||
{hour, minute, second, {microsecond, _}} =
|
||||
time
|
||||
|> to_day_fraction()
|
||||
|> calendar.time_from_day_fraction()
|
||||
|
||||
time = %Time{
|
||||
calendar: calendar,
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: {microsecond, precision}
|
||||
}
|
||||
|
||||
{:ok, time}
|
||||
end
|
||||
|
||||
@doc """
|
||||
Similar to `Time.convert/2`, but raises an `ArgumentError`
|
||||
if the conversion between the two calendars is not possible.
|
||||
|
||||
## Examples
|
||||
|
||||
Imagine someone implements `Calendar.Holocene`, a calendar based on the
|
||||
Gregorian calendar that adds exactly 10,000 years to the current Gregorian
|
||||
year:
|
||||
|
||||
iex> Time.convert!(~T[13:30:15], Calendar.Holocene)
|
||||
%Time{calendar: Calendar.Holocene, hour: 13, minute: 30, second: 15, microsecond: {0, 0}}
|
||||
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
@spec convert!(Calendar.time(), Calendar.calendar()) :: t
|
||||
def convert!(time, calendar) do
|
||||
case convert(time, calendar) do
|
||||
{:ok, value} ->
|
||||
value
|
||||
|
||||
{:error, reason} ->
|
||||
raise ArgumentError,
|
||||
"cannot convert #{inspect(time)} to target calendar #{inspect(calendar)}, " <>
|
||||
"reason: #{inspect(reason)}"
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the difference between two times, considering only the hour, minute,
|
||||
second and microsecond.
|
||||
|
||||
As with the `compare/2` function both `Time` structs and other structures
|
||||
containing time can be used. If for instance a `NaiveDateTime` or `DateTime`
|
||||
is passed, only the hour, month, second, and microsecond is considered. Any
|
||||
additional information about a date or time zone is ignored when calculating
|
||||
the difference.
|
||||
|
||||
The answer can be returned in any `unit` available from
|
||||
`t:System.time_unit/0`. If the first unit is smaller than
|
||||
the second, a negative number is returned.
|
||||
|
||||
This function returns the difference in seconds where seconds
|
||||
are measured according to `Calendar.ISO`.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Time.diff(~T[00:29:12], ~T[00:29:10])
|
||||
2
|
||||
|
||||
# When passing a `NaiveDateTime` the date part is ignored.
|
||||
iex> Time.diff(~N[2017-01-01 00:29:12], ~T[00:29:10])
|
||||
2
|
||||
|
||||
# Two `NaiveDateTime` structs could have big differences in the date
|
||||
# but only the time part is considered.
|
||||
iex> Time.diff(~N[2017-01-01 00:29:12], ~N[1900-02-03 00:29:10])
|
||||
2
|
||||
|
||||
iex> Time.diff(~T[00:29:12], ~T[00:29:10], :microsecond)
|
||||
2_000_000
|
||||
iex> Time.diff(~T[00:29:10], ~T[00:29:12], :microsecond)
|
||||
-2_000_000
|
||||
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
@spec diff(Calendar.time(), Calendar.time(), System.time_unit()) :: integer
|
||||
def diff(time1, time2, unit \\ :second)
|
||||
|
||||
def diff(
|
||||
%{
|
||||
calendar: Calendar.ISO,
|
||||
hour: hour1,
|
||||
minute: minute1,
|
||||
second: second1,
|
||||
microsecond: {microsecond1, @parts_per_day}
|
||||
},
|
||||
%{
|
||||
calendar: Calendar.ISO,
|
||||
hour: hour2,
|
||||
minute: minute2,
|
||||
second: second2,
|
||||
microsecond: {microsecond2, @parts_per_day}
|
||||
},
|
||||
unit
|
||||
) do
|
||||
total =
|
||||
(hour1 - hour2) * 3_600_000_000 + (minute1 - minute2) * 60_000_000 +
|
||||
(second1 - second2) * 1_000_000 + (microsecond1 - microsecond2)
|
||||
|
||||
System.convert_time_unit(total, :microsecond, unit)
|
||||
end
|
||||
|
||||
def diff(time1, time2, unit) do
|
||||
fraction1 = to_day_fraction(time1)
|
||||
fraction2 = to_day_fraction(time2)
|
||||
|
||||
Calendar.ISO.iso_days_to_unit({0, fraction1}, unit) -
|
||||
Calendar.ISO.iso_days_to_unit({0, fraction2}, unit)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the given time with the microsecond field truncated to the given
|
||||
precision (`:microsecond`, `millisecond` or `:second`).
|
||||
|
||||
The given time is returned unchanged if it already has lower precision than
|
||||
the given precision.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Time.truncate(~T[01:01:01.123456], :microsecond)
|
||||
~T[01:01:01.123456]
|
||||
|
||||
iex> Time.truncate(~T[01:01:01.123456], :millisecond)
|
||||
~T[01:01:01.123]
|
||||
|
||||
iex> Time.truncate(~T[01:01:01.123456], :second)
|
||||
~T[01:01:01]
|
||||
|
||||
"""
|
||||
@doc since: "1.6.0"
|
||||
@spec truncate(t(), :microsecond | :millisecond | :second) :: t()
|
||||
def truncate(%Time{microsecond: microsecond} = time, precision) do
|
||||
%{time | microsecond: Calendar.truncate(microsecond, precision)}
|
||||
end
|
||||
|
||||
## Helpers
|
||||
|
||||
defp to_day_fraction(%{
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: {_, _} = microsecond,
|
||||
calendar: calendar
|
||||
}) do
|
||||
calendar.time_to_day_fraction(hour, minute, second, microsecond)
|
||||
end
|
||||
|
||||
defimpl String.Chars do
|
||||
def to_string(time) do
|
||||
%{
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond,
|
||||
calendar: calendar
|
||||
} = time
|
||||
|
||||
calendar.time_to_string(hour, minute, second, microsecond)
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect do
|
||||
def inspect(%{calendar: Calendar.ISO} = time, _) do
|
||||
%{
|
||||
hour: hour,
|
||||
minute: minute,
|
||||
second: second,
|
||||
microsecond: microsecond,
|
||||
calendar: Calendar.ISO
|
||||
} = time
|
||||
|
||||
"~T[" <> Calendar.ISO.time_to_string(hour, minute, second, microsecond) <> "]"
|
||||
end
|
||||
|
||||
def inspect(time, opts) do
|
||||
Inspect.Any.inspect(time, opts)
|
||||
end
|
||||
end
|
||||
end
|
||||
@@ -1,96 +0,0 @@
|
||||
defmodule Calendar.TimeZoneDatabase do
|
||||
@moduledoc """
|
||||
This module defines a behaviour for providing time zone data.
|
||||
|
||||
IANA provides time zone data that includes data about different
|
||||
UTC offsets and standard offsets for time zones.
|
||||
"""
|
||||
|
||||
@typedoc """
|
||||
A period where a certain combination of UTC offset, standard offset and zone
|
||||
abbreviation is in effect.
|
||||
|
||||
For instance one period could be the summer of 2018 in "Europe/London" where summer time /
|
||||
daylight saving time is in effect and lasts from spring to autumn. At autumn the `std_offset`
|
||||
changes along with the `zone_abbr` so a different period is needed during winter.
|
||||
"""
|
||||
@type time_zone_period :: %{
|
||||
optional(any) => any,
|
||||
utc_offset: Calendar.utc_offset(),
|
||||
std_offset: Calendar.std_offset(),
|
||||
zone_abbr: Calendar.zone_abbr()
|
||||
}
|
||||
|
||||
@typedoc """
|
||||
Limit for when a certain time zone period begins or ends.
|
||||
|
||||
A beginning is inclusive. An ending is exclusive. Eg. if a period is from
|
||||
2015-03-29 01:00:00 and until 2015-10-25 01:00:00, the period includes and
|
||||
begins from the beginning of 2015-03-29 01:00:00 and lasts until just before
|
||||
2015-10-25 01:00:00.
|
||||
|
||||
A beginning or end for certain periods are infinite. For instance the latest
|
||||
period for time zones without DST or plans to change. However for the purpose
|
||||
of this behaviour they are only used for gaps in wall time where the needed
|
||||
period limits are at a certain time.
|
||||
"""
|
||||
@type time_zone_period_limit :: Calendar.naive_datetime()
|
||||
|
||||
@doc """
|
||||
Time zone period for a point in time in UTC for a specific time zone.
|
||||
|
||||
Takes a time zone name and a point in time for UTC and returns a
|
||||
`time_zone_period` for that point in time.
|
||||
"""
|
||||
@doc since: "1.8.0"
|
||||
@callback time_zone_period_from_utc_iso_days(Calendar.iso_days(), Calendar.time_zone()) ::
|
||||
{:ok, time_zone_period}
|
||||
| {:error, :time_zone_not_found | :utc_only_time_zone_database}
|
||||
|
||||
@doc """
|
||||
Possible time zone periods for a certain time zone and wall clock date and time.
|
||||
|
||||
When the provided `datetime` is ambiguous a tuple with `:ambiguous` and two possible
|
||||
periods. The periods in the list are sorted with the first element being the one that begins first.
|
||||
|
||||
When the provided `datetime` is in a gap - for instance during the "spring forward" when going
|
||||
from winter time to summer time, a tuple with `:gap` and two periods with limits are returned
|
||||
in a nested tuple. The first nested two-tuple is the period before the gap and a naive datetime
|
||||
with a limit for when the period ends (wall time). The second nested two-tuple is the period
|
||||
just after the gap and a datetime (wall time) for when the period begins just after the gap.
|
||||
|
||||
If there is only a single possible period for the provided `datetime`, the a tuple with `:single`
|
||||
and the `time_zone_period` is returned.
|
||||
"""
|
||||
@doc since: "1.8.0"
|
||||
@callback time_zone_periods_from_wall_datetime(Calendar.naive_datetime(), Calendar.time_zone()) ::
|
||||
{:ok, time_zone_period}
|
||||
| {:ambiguous, time_zone_period, time_zone_period}
|
||||
| {:gap, {time_zone_period, time_zone_period_limit},
|
||||
{time_zone_period, time_zone_period_limit}}
|
||||
| {:error, :time_zone_not_found | :utc_only_time_zone_database}
|
||||
end
|
||||
|
||||
defmodule Calendar.UTCOnlyTimeZoneDatabase do
|
||||
@moduledoc """
|
||||
Built-in time zone database that works only in Etc/UTC.
|
||||
|
||||
For all other time zones, it returns `{:error, :utc_only_time_zone_database}`.
|
||||
"""
|
||||
|
||||
@behaviour Calendar.TimeZoneDatabase
|
||||
|
||||
@impl true
|
||||
def time_zone_period_from_utc_iso_days(_, "Etc/UTC"),
|
||||
do: {:ok, %{std_offset: 0, utc_offset: 0, zone_abbr: "UTC"}}
|
||||
|
||||
def time_zone_period_from_utc_iso_days(_, _),
|
||||
do: {:error, :utc_only_time_zone_database}
|
||||
|
||||
@impl true
|
||||
def time_zone_periods_from_wall_datetime(_, "Etc/UTC"),
|
||||
do: {:ok, %{std_offset: 0, utc_offset: 0, zone_abbr: "UTC"}}
|
||||
|
||||
def time_zone_periods_from_wall_datetime(_, _),
|
||||
do: {:error, :utc_only_time_zone_database}
|
||||
end
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@@ -1,288 +0,0 @@
|
||||
defmodule Code.Identifier do
|
||||
@moduledoc false
|
||||
|
||||
@doc """
|
||||
Checks if the given identifier is an unary op.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Code.Identifier.unary_op(:+)
|
||||
{:non_associative, 300}
|
||||
|
||||
"""
|
||||
@spec unary_op(atom) :: {:non_associative, precedence :: pos_integer} | :error
|
||||
def unary_op(op) do
|
||||
cond do
|
||||
op in [:&] -> {:non_associative, 90}
|
||||
op in [:!, :^, :not, :+, :-, :~~~] -> {:non_associative, 300}
|
||||
op in [:@] -> {:non_associative, 320}
|
||||
true -> :error
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Checks if the given identifier is a binary op.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Code.Identifier.binary_op(:+)
|
||||
{:left, 210}
|
||||
|
||||
"""
|
||||
@spec binary_op(atom) :: {:left | :right, precedence :: pos_integer} | :error
|
||||
def binary_op(op) do
|
||||
cond do
|
||||
op in [:<-, :\\] -> {:left, 40}
|
||||
op in [:when] -> {:right, 50}
|
||||
op in [:"::"] -> {:right, 60}
|
||||
op in [:|] -> {:right, 70}
|
||||
op in [:=] -> {:right, 100}
|
||||
op in [:||, :|||, :or] -> {:left, 130}
|
||||
op in [:&&, :&&&, :and] -> {:left, 140}
|
||||
op in [:==, :!=, :=~, :===, :!==] -> {:left, 150}
|
||||
op in [:<, :<=, :>=, :>] -> {:left, 160}
|
||||
op in [:|>, :<<<, :>>>, :<~, :~>, :<<~, :~>>, :<~>, :<|>] -> {:left, 170}
|
||||
op in [:in] -> {:left, 180}
|
||||
op in [:^^^] -> {:left, 190}
|
||||
op in [:++, :--, :.., :<>] -> {:right, 200}
|
||||
op in [:+, :-] -> {:left, 210}
|
||||
op in [:*, :/] -> {:left, 220}
|
||||
op in [:.] -> {:left, 310}
|
||||
true -> :error
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Classifies the given atom into one of the following categories:
|
||||
|
||||
* `:alias` - a valid Elixir alias, like `Foo`, `Foo.Bar` and so on
|
||||
|
||||
* `:callable_local` - an atom that can be used as a local call;
|
||||
this category includes identifiers like `:foo`
|
||||
|
||||
* `:callable_operator` - all callable operators, such as `:<>`. Note
|
||||
operators such as `:..` are not callable because of ambiguity
|
||||
|
||||
* `:not_atomable` - callable operators that must be wrapped in quotes when
|
||||
defined as an atom. For example, `::` must be written as `:"::"` to avoid
|
||||
the ambiguity between the atom and the keyword identifier
|
||||
|
||||
* `:not_callable` - an atom that cannot be used as a function call after the
|
||||
`.` operator (for example, `:<<>>` is not callable because `Foo.<<>>` is a
|
||||
syntax error); this category includes atoms like `:Foo`, since they are
|
||||
valid identifiers but they need quotes to be used in function calls
|
||||
(`Foo."Bar"`)
|
||||
|
||||
* `:other` - any other atom (these are usually escaped when inspected, like
|
||||
`:"foo and bar"`)
|
||||
|
||||
"""
|
||||
def classify(atom) when is_atom(atom) do
|
||||
charlist = Atom.to_charlist(atom)
|
||||
|
||||
cond do
|
||||
atom in [:%, :%{}, :{}, :<<>>, :..., :.., :., :->] ->
|
||||
:not_callable
|
||||
|
||||
atom in [:"::"] ->
|
||||
:not_atomable
|
||||
|
||||
unary_op(atom) != :error or binary_op(atom) != :error ->
|
||||
:callable_operator
|
||||
|
||||
valid_alias?(charlist) ->
|
||||
:alias
|
||||
|
||||
true ->
|
||||
case :elixir_config.get(:identifier_tokenizer, String.Tokenizer).tokenize(charlist) do
|
||||
{kind, _acc, [], _, _, special} ->
|
||||
if kind == :identifier and not :lists.member(?@, special) do
|
||||
:callable_local
|
||||
else
|
||||
:not_callable
|
||||
end
|
||||
|
||||
_ ->
|
||||
:other
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defp valid_alias?('Elixir' ++ rest), do: valid_alias_piece?(rest)
|
||||
defp valid_alias?(_other), do: false
|
||||
|
||||
defp valid_alias_piece?([?., char | rest]) when char >= ?A and char <= ?Z,
|
||||
do: valid_alias_piece?(trim_leading_while_valid_identifier(rest))
|
||||
|
||||
defp valid_alias_piece?([]), do: true
|
||||
defp valid_alias_piece?(_other), do: false
|
||||
|
||||
defp trim_leading_while_valid_identifier([char | rest])
|
||||
when char >= ?a and char <= ?z
|
||||
when char >= ?A and char <= ?Z
|
||||
when char >= ?0 and char <= ?9
|
||||
when char == ?_ do
|
||||
trim_leading_while_valid_identifier(rest)
|
||||
end
|
||||
|
||||
defp trim_leading_while_valid_identifier(other) do
|
||||
other
|
||||
end
|
||||
|
||||
@doc """
|
||||
Inspects the identifier as an atom.
|
||||
"""
|
||||
def inspect_as_atom(atom) when is_nil(atom) or is_boolean(atom) do
|
||||
Atom.to_string(atom)
|
||||
end
|
||||
|
||||
def inspect_as_atom(atom) when is_atom(atom) do
|
||||
binary = Atom.to_string(atom)
|
||||
|
||||
case classify(atom) do
|
||||
:alias ->
|
||||
case binary do
|
||||
binary when binary in ["Elixir", "Elixir.Elixir"] -> binary
|
||||
"Elixir.Elixir." <> _rest -> binary
|
||||
"Elixir." <> rest -> rest
|
||||
end
|
||||
|
||||
type when type in [:callable_local, :callable_operator, :not_callable] ->
|
||||
":" <> binary
|
||||
|
||||
_ ->
|
||||
{escaped, _} = escape(binary, ?")
|
||||
IO.iodata_to_binary([?:, ?", escaped, ?"])
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Inspects the given identifier as a key.
|
||||
"""
|
||||
def inspect_as_key(atom) when is_atom(atom) do
|
||||
binary = Atom.to_string(atom)
|
||||
|
||||
case classify(atom) do
|
||||
type when type in [:callable_local, :callable_operator, :not_callable] ->
|
||||
IO.iodata_to_binary([binary, ?:])
|
||||
|
||||
_ ->
|
||||
{escaped, _} = escape(binary, ?")
|
||||
IO.iodata_to_binary([?", escaped, ?", ?:])
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Inspects the given identifier as a function name.
|
||||
"""
|
||||
def inspect_as_function(atom) when is_atom(atom) do
|
||||
binary = Atom.to_string(atom)
|
||||
|
||||
case classify(atom) do
|
||||
type when type in [:callable_local, :callable_operator, :not_atomable] ->
|
||||
binary
|
||||
|
||||
type ->
|
||||
escaped =
|
||||
if type in [:not_callable, :alias] do
|
||||
binary
|
||||
else
|
||||
elem(escape(binary, ?"), 0)
|
||||
end
|
||||
|
||||
IO.iodata_to_binary([?", escaped, ?"])
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Extracts the name and arity of the parent from the anonymous function identifier.
|
||||
"""
|
||||
# Example of this format: -NAME/ARITY-fun-COUNT-
|
||||
def extract_anonymous_fun_parent(atom) when is_atom(atom) do
|
||||
with "-" <> rest <- Atom.to_string(atom),
|
||||
[trailing | reversed] = rest |> String.split("/") |> Enum.reverse(),
|
||||
[arity, _inner, _count, ""] <- String.split(trailing, "-") do
|
||||
{reversed |> Enum.reverse() |> Enum.join("/") |> String.to_atom(), arity}
|
||||
else
|
||||
_ -> :error
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Escapes the given identifier.
|
||||
"""
|
||||
def escape(other, char, count \\ :infinity, fun \\ &escape_map/1) do
|
||||
escape(other, char, count, [], fun)
|
||||
end
|
||||
|
||||
defp escape(<<_, _::binary>> = binary, _char, 0, acc, _fun) do
|
||||
{acc, binary}
|
||||
end
|
||||
|
||||
defp escape(<<char, t::binary>>, char, count, acc, fun) do
|
||||
escape(t, char, decrement(count), [acc | [?\\, char]], fun)
|
||||
end
|
||||
|
||||
defp escape(<<?#, ?{, t::binary>>, char, count, acc, fun) do
|
||||
escape(t, char, decrement(count), [acc | '\\\#{'], fun)
|
||||
end
|
||||
|
||||
defp escape(<<h::utf8, t::binary>>, char, count, acc, fun) do
|
||||
escaped = if value = fun.(h), do: value, else: escape_char(h)
|
||||
escape(t, char, decrement(count), [acc | escaped], fun)
|
||||
end
|
||||
|
||||
defp escape(<<a::4, b::4, t::binary>>, char, count, acc, fun) do
|
||||
escape(t, char, decrement(count), [acc | ['\\x', to_hex(a), to_hex(b)]], fun)
|
||||
end
|
||||
|
||||
defp escape(<<>>, _char, _count, acc, _fun) do
|
||||
{acc, <<>>}
|
||||
end
|
||||
|
||||
defp escape_char(0), do: '\\0'
|
||||
|
||||
defp escape_char(65279), do: '\\uFEFF'
|
||||
|
||||
defp escape_char(char)
|
||||
when char in 0x20..0x7E
|
||||
when char in 0xA0..0xD7FF
|
||||
when char in 0xE000..0xFFFD
|
||||
when char in 0x10000..0x10FFFF do
|
||||
<<char::utf8>>
|
||||
end
|
||||
|
||||
defp escape_char(char) when char < 0x100 do
|
||||
<<a::4, b::4>> = <<char::8>>
|
||||
['\\x', to_hex(a), to_hex(b)]
|
||||
end
|
||||
|
||||
defp escape_char(char) when char < 0x10000 do
|
||||
<<a::4, b::4, c::4, d::4>> = <<char::16>>
|
||||
['\\x{', to_hex(a), to_hex(b), to_hex(c), to_hex(d), ?}]
|
||||
end
|
||||
|
||||
defp escape_char(char) when char < 0x1000000 do
|
||||
<<a::4, b::4, c::4, d::4, e::4, f::4>> = <<char::24>>
|
||||
['\\x{', to_hex(a), to_hex(b), to_hex(c), to_hex(d), to_hex(e), to_hex(f), ?}]
|
||||
end
|
||||
|
||||
defp escape_map(?\a), do: '\\a'
|
||||
defp escape_map(?\b), do: '\\b'
|
||||
defp escape_map(?\d), do: '\\d'
|
||||
defp escape_map(?\e), do: '\\e'
|
||||
defp escape_map(?\f), do: '\\f'
|
||||
defp escape_map(?\n), do: '\\n'
|
||||
defp escape_map(?\r), do: '\\r'
|
||||
defp escape_map(?\t), do: '\\t'
|
||||
defp escape_map(?\v), do: '\\v'
|
||||
defp escape_map(?\\), do: '\\\\'
|
||||
defp escape_map(_), do: false
|
||||
|
||||
@compile {:inline, to_hex: 1, decrement: 1}
|
||||
defp to_hex(c) when c in 0..9, do: ?0 + c
|
||||
defp to_hex(c) when c in 10..15, do: ?A + c - 10
|
||||
|
||||
defp decrement(:infinity), do: :infinity
|
||||
defp decrement(counter), do: counter - 1
|
||||
end
|
||||
@@ -1,416 +0,0 @@
|
||||
defmodule Code.Typespec do
|
||||
@moduledoc false
|
||||
|
||||
@doc """
|
||||
Converts a spec clause back to Elixir quoted expression.
|
||||
"""
|
||||
@spec spec_to_quoted(atom, tuple) :: {atom, keyword, [Macro.t()]}
|
||||
def spec_to_quoted(name, spec)
|
||||
|
||||
def spec_to_quoted(name, {:type, line, :fun, [{:type, _, :product, args}, result]})
|
||||
when is_atom(name) do
|
||||
meta = [line: line]
|
||||
body = {name, meta, Enum.map(args, &typespec_to_quoted/1)}
|
||||
|
||||
vars =
|
||||
for type_expr <- args ++ [result],
|
||||
var <- collect_vars(type_expr),
|
||||
uniq: true,
|
||||
do: {var, {:var, meta, nil}}
|
||||
|
||||
spec = {:"::", meta, [body, typespec_to_quoted(result)]}
|
||||
|
||||
if vars == [] do
|
||||
spec
|
||||
else
|
||||
{:when, meta, [spec, vars]}
|
||||
end
|
||||
end
|
||||
|
||||
def spec_to_quoted(name, {:type, line, :fun, []}) when is_atom(name) do
|
||||
{:"::", [line: line], [{name, [line: line], []}, quote(do: term)]}
|
||||
end
|
||||
|
||||
def spec_to_quoted(name, {:type, line, :bounded_fun, [type, constrs]}) when is_atom(name) do
|
||||
{:type, _, :fun, [{:type, _, :product, args}, result]} = type
|
||||
|
||||
guards =
|
||||
for {:type, _, :constraint, [{:atom, _, :is_subtype}, [{:var, _, var}, type]]} <- constrs do
|
||||
{erl_to_ex_var(var), typespec_to_quoted(type)}
|
||||
end
|
||||
|
||||
meta = [line: line]
|
||||
ignore_vars = Keyword.keys(guards)
|
||||
|
||||
vars =
|
||||
for type_expr <- args ++ [result],
|
||||
var <- collect_vars(type_expr),
|
||||
var not in ignore_vars,
|
||||
uniq: true,
|
||||
do: {var, {:var, meta, nil}}
|
||||
|
||||
args = for arg <- args, do: typespec_to_quoted(arg)
|
||||
|
||||
when_args = [
|
||||
{:"::", meta, [{name, [line: line], args}, typespec_to_quoted(result)]},
|
||||
guards ++ vars
|
||||
]
|
||||
|
||||
{:when, meta, when_args}
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts a type clause back to Elixir AST.
|
||||
"""
|
||||
def type_to_quoted(type)
|
||||
|
||||
def type_to_quoted({{:record, record}, fields, args}) when is_atom(record) do
|
||||
fields = for field <- fields, do: typespec_to_quoted(field)
|
||||
args = for arg <- args, do: typespec_to_quoted(arg)
|
||||
type = {:{}, [], [record | fields]}
|
||||
quote(do: unquote(record)(unquote_splicing(args)) :: unquote(type))
|
||||
end
|
||||
|
||||
def type_to_quoted({name, type, args}) when is_atom(name) do
|
||||
args = for arg <- args, do: typespec_to_quoted(arg)
|
||||
quote(do: unquote(name)(unquote_splicing(args)) :: unquote(typespec_to_quoted(type)))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns all types available from the module's BEAM code.
|
||||
|
||||
The result is returned as a list of tuples where the first
|
||||
element is the type (`:typep`, `:type` and `:opaque`).
|
||||
|
||||
The module must have a corresponding BEAM file which can be
|
||||
located by the runtime system. The types will be in the Erlang
|
||||
Abstract Format.
|
||||
"""
|
||||
@spec fetch_types(module | binary) :: {:ok, [tuple]} | :error
|
||||
def fetch_types(module) when is_atom(module) or is_binary(module) do
|
||||
case typespecs_abstract_code(module) do
|
||||
{:ok, abstract_code} ->
|
||||
exported_types = for {:attribute, _, :export_type, types} <- abstract_code, do: types
|
||||
exported_types = List.flatten(exported_types)
|
||||
|
||||
types =
|
||||
for {:attribute, _, kind, {name, _, args} = type} <- abstract_code,
|
||||
kind in [:opaque, :type] do
|
||||
cond do
|
||||
kind == :opaque -> {:opaque, type}
|
||||
{name, length(args)} in exported_types -> {:type, type}
|
||||
true -> {:typep, type}
|
||||
end
|
||||
end
|
||||
|
||||
{:ok, types}
|
||||
|
||||
_ ->
|
||||
:error
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns all specs available from the module's BEAM code.
|
||||
|
||||
The result is returned as a list of tuples where the first
|
||||
element is spec name and arity and the second is the spec.
|
||||
|
||||
The module must have a corresponding BEAM file which can be
|
||||
located by the runtime system. The types will be in the Erlang
|
||||
Abstract Format.
|
||||
"""
|
||||
@spec fetch_specs(module) :: {:ok, [tuple]} | :error
|
||||
def fetch_specs(module) when is_atom(module) or is_binary(module) do
|
||||
case typespecs_abstract_code(module) do
|
||||
{:ok, abstract_code} ->
|
||||
{:ok, for({:attribute, _, :spec, value} <- abstract_code, do: value)}
|
||||
|
||||
:error ->
|
||||
:error
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns all callbacks available from the module's BEAM code.
|
||||
|
||||
The result is returned as a list of tuples where the first
|
||||
element is spec name and arity and the second is the spec.
|
||||
|
||||
The module must have a corresponding BEAM file
|
||||
which can be located by the runtime system. The types will be
|
||||
in the Erlang Abstract Format.
|
||||
"""
|
||||
@spec fetch_callbacks(module) :: {:ok, [tuple]} | :error
|
||||
def fetch_callbacks(module) when is_atom(module) or is_binary(module) do
|
||||
case typespecs_abstract_code(module) do
|
||||
{:ok, abstract_code} ->
|
||||
{:ok, for({:attribute, _, :callback, value} <- abstract_code, do: value)}
|
||||
|
||||
:error ->
|
||||
:error
|
||||
end
|
||||
end
|
||||
|
||||
defp typespecs_abstract_code(module) do
|
||||
with {module, binary} <- get_module_and_beam(module),
|
||||
{:ok, {_, [debug_info: {:debug_info_v1, backend, data}]}} <-
|
||||
:beam_lib.chunks(binary, [:debug_info]) do
|
||||
case data do
|
||||
{:elixir_v1, %{}, specs} ->
|
||||
# Fast path to avoid translation to Erlang from Elixir.
|
||||
{:ok, specs}
|
||||
|
||||
_ ->
|
||||
case backend.debug_info(:erlang_v1, module, data, []) do
|
||||
{:ok, abstract_code} -> {:ok, abstract_code}
|
||||
_ -> :error
|
||||
end
|
||||
end
|
||||
else
|
||||
_ -> :error
|
||||
end
|
||||
end
|
||||
|
||||
defp get_module_and_beam(module) when is_atom(module) do
|
||||
case :code.get_object_code(module) do
|
||||
{^module, beam, _filename} -> {module, beam}
|
||||
:error -> :error
|
||||
end
|
||||
end
|
||||
|
||||
defp get_module_and_beam(beam) when is_binary(beam) do
|
||||
case :beam_lib.info(beam) do
|
||||
[_ | _] = info -> {info[:module], beam}
|
||||
_ -> :error
|
||||
end
|
||||
end
|
||||
|
||||
## To AST conversion
|
||||
|
||||
defp collect_vars({:ann_type, _line, args}) when is_list(args) do
|
||||
[]
|
||||
end
|
||||
|
||||
defp collect_vars({:type, _line, _kind, args}) when is_list(args) do
|
||||
Enum.flat_map(args, &collect_vars/1)
|
||||
end
|
||||
|
||||
defp collect_vars({:remote_type, _line, args}) when is_list(args) do
|
||||
Enum.flat_map(args, &collect_vars/1)
|
||||
end
|
||||
|
||||
defp collect_vars({:typed_record_field, _line, type}) do
|
||||
collect_vars(type)
|
||||
end
|
||||
|
||||
defp collect_vars({:paren_type, _line, [type]}) do
|
||||
collect_vars(type)
|
||||
end
|
||||
|
||||
defp collect_vars({:var, _line, var}) do
|
||||
[erl_to_ex_var(var)]
|
||||
end
|
||||
|
||||
defp collect_vars(_) do
|
||||
[]
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:user_type, line, name, args}) do
|
||||
typespec_to_quoted({:type, line, name, args})
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :tuple, :any}) do
|
||||
{:tuple, [line: line], []}
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :tuple, args}) do
|
||||
args = for arg <- args, do: typespec_to_quoted(arg)
|
||||
{:{}, [line: line], args}
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, _line, :list, [{:type, _, :union, unions} = arg]}) do
|
||||
case unpack_typespec_kw(unions, []) do
|
||||
{:ok, ast} -> ast
|
||||
:error -> [typespec_to_quoted(arg)]
|
||||
end
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :list, []}) do
|
||||
{:list, [line: line], []}
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, _line, :list, [arg]}) do
|
||||
[typespec_to_quoted(arg)]
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :nonempty_list, []}) do
|
||||
[{:..., [line: line], nil}]
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :nonempty_list, [arg]}) do
|
||||
[typespec_to_quoted(arg), {:..., [line: line], nil}]
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :map, :any}) do
|
||||
{:map, [line: line], []}
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :map, fields}) do
|
||||
fields =
|
||||
Enum.map(fields, fn
|
||||
{:type, _, :map_field_assoc, :any} ->
|
||||
{{:optional, [], [{:any, [], []}]}, {:any, [], []}}
|
||||
|
||||
{:type, _, :map_field_exact, [{:atom, _, k}, v]} ->
|
||||
{k, typespec_to_quoted(v)}
|
||||
|
||||
{:type, _, :map_field_exact, [k, v]} ->
|
||||
{{:required, [], [typespec_to_quoted(k)]}, typespec_to_quoted(v)}
|
||||
|
||||
{:type, _, :map_field_assoc, [k, v]} ->
|
||||
{{:optional, [], [typespec_to_quoted(k)]}, typespec_to_quoted(v)}
|
||||
end)
|
||||
|
||||
{struct, fields} = Keyword.pop(fields, :__struct__)
|
||||
map = {:%{}, [line: line], fields}
|
||||
|
||||
if struct do
|
||||
{:%, [line: line], [struct, map]}
|
||||
else
|
||||
map
|
||||
end
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :binary, [arg1, arg2]}) do
|
||||
[arg1, arg2] = for arg <- [arg1, arg2], do: typespec_to_quoted(arg)
|
||||
|
||||
case {typespec_to_quoted(arg1), typespec_to_quoted(arg2)} do
|
||||
{arg1, 0} ->
|
||||
quote(line: line, do: <<_::unquote(arg1)>>)
|
||||
|
||||
{0, arg2} ->
|
||||
quote(line: line, do: <<_::_*unquote(arg2)>>)
|
||||
|
||||
{arg1, arg2} ->
|
||||
quote(line: line, do: <<_::unquote(arg1), _::_*unquote(arg2)>>)
|
||||
end
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :union, args}) do
|
||||
args = for arg <- args, do: typespec_to_quoted(arg)
|
||||
Enum.reduce(Enum.reverse(args), fn arg, expr -> {:|, [line: line], [arg, expr]} end)
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :fun, [{:type, _, :product, args}, result]}) do
|
||||
args = for arg <- args, do: typespec_to_quoted(arg)
|
||||
[{:->, [line: line], [args, typespec_to_quoted(result)]}]
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :fun, [args, result]}) do
|
||||
[{:->, [line: line], [[typespec_to_quoted(args)], typespec_to_quoted(result)]}]
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :fun, []}) do
|
||||
typespec_to_quoted({:type, line, :fun, [{:type, line, :any}, {:type, line, :any, []}]})
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, :range, [left, right]}) do
|
||||
{:.., [line: line], [typespec_to_quoted(left), typespec_to_quoted(right)]}
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, _line, nil, []}) do
|
||||
[]
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, line, name, args}) do
|
||||
args = for arg <- args, do: typespec_to_quoted(arg)
|
||||
{name, [line: line], args}
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:var, line, var}) do
|
||||
{erl_to_ex_var(var), [line: line], nil}
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:op, line, op, arg}) do
|
||||
{op, [line: line], [typespec_to_quoted(arg)]}
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:remote_type, line, [mod, name, args]}) do
|
||||
remote_type(line, mod, name, args)
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:ann_type, line, [var, type]}) do
|
||||
{:"::", [line: line], [typespec_to_quoted(var), typespec_to_quoted(type)]}
|
||||
end
|
||||
|
||||
defp typespec_to_quoted(
|
||||
{:typed_record_field, {:record_field, line, {:atom, line1, name}}, type}
|
||||
) do
|
||||
typespec_to_quoted({:ann_type, line, [{:var, line1, name}, type]})
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:type, _, :any}) do
|
||||
quote(do: ...)
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({:paren_type, _, [type]}) do
|
||||
typespec_to_quoted(type)
|
||||
end
|
||||
|
||||
defp typespec_to_quoted({type, _line, atom}) when is_atom(type) do
|
||||
atom
|
||||
end
|
||||
|
||||
defp typespec_to_quoted(other), do: other
|
||||
|
||||
## Helpers
|
||||
|
||||
defp remote_type(line, {:atom, _, :elixir}, {:atom, _, :charlist}, []) do
|
||||
typespec_to_quoted({:type, line, :charlist, []})
|
||||
end
|
||||
|
||||
defp remote_type(line, {:atom, _, :elixir}, {:atom, _, :nonempty_charlist}, []) do
|
||||
typespec_to_quoted({:type, line, :nonempty_charlist, []})
|
||||
end
|
||||
|
||||
defp remote_type(line, {:atom, _, :elixir}, {:atom, _, :struct}, []) do
|
||||
typespec_to_quoted({:type, line, :struct, []})
|
||||
end
|
||||
|
||||
defp remote_type(line, {:atom, _, :elixir}, {:atom, _, :as_boolean}, [arg]) do
|
||||
typespec_to_quoted({:type, line, :as_boolean, [arg]})
|
||||
end
|
||||
|
||||
defp remote_type(line, {:atom, _, :elixir}, {:atom, _, :keyword}, args) do
|
||||
typespec_to_quoted({:type, line, :keyword, args})
|
||||
end
|
||||
|
||||
defp remote_type(line, mod, name, args) do
|
||||
args = for arg <- args, do: typespec_to_quoted(arg)
|
||||
dot = {:., [line: line], [typespec_to_quoted(mod), typespec_to_quoted(name)]}
|
||||
{dot, [line: line], args}
|
||||
end
|
||||
|
||||
defp erl_to_ex_var(var) do
|
||||
case Atom.to_string(var) do
|
||||
<<"_", c::utf8, rest::binary>> ->
|
||||
String.to_atom("_#{String.downcase(<<c::utf8>>)}#{rest}")
|
||||
|
||||
<<c::utf8, rest::binary>> ->
|
||||
String.to_atom("#{String.downcase(<<c::utf8>>)}#{rest}")
|
||||
end
|
||||
end
|
||||
|
||||
defp unpack_typespec_kw([{:type, _, :tuple, [{:atom, _, atom}, type]} | t], acc) do
|
||||
unpack_typespec_kw(t, [{atom, typespec_to_quoted(type)} | acc])
|
||||
end
|
||||
|
||||
defp unpack_typespec_kw([], acc) do
|
||||
{:ok, Enum.reverse(acc)}
|
||||
end
|
||||
|
||||
defp unpack_typespec_kw(_, _acc) do
|
||||
:error
|
||||
end
|
||||
end
|
||||
@@ -1,153 +0,0 @@
|
||||
defprotocol Collectable do
|
||||
@moduledoc """
|
||||
A protocol to traverse data structures.
|
||||
|
||||
The `Enum.into/2` function uses this protocol to insert an
|
||||
enumerable into a collection:
|
||||
|
||||
iex> Enum.into([a: 1, b: 2], %{})
|
||||
%{a: 1, b: 2}
|
||||
|
||||
## Why Collectable?
|
||||
|
||||
The `Enumerable` protocol is useful to take values out of a collection.
|
||||
In order to support a wide range of values, the functions provided by
|
||||
the `Enumerable` protocol do not keep shape. For example, passing a
|
||||
map to `Enum.map/2` always returns a list.
|
||||
|
||||
This design is intentional. `Enumerable` was designed to support infinite
|
||||
collections, resources and other structures with fixed shape. For example,
|
||||
it doesn't make sense to insert values into a range, as it has a fixed
|
||||
shape where just the range limits are stored.
|
||||
|
||||
The `Collectable` module was designed to fill the gap left by the
|
||||
`Enumerable` protocol. `Collectable.into/1` can be seen as the opposite of
|
||||
`Enumerable.reduce/3`. If the functions in `Enumerable` are about taking values out,
|
||||
then `Collectable.into/1` is about collecting those values into a structure.
|
||||
|
||||
## Examples
|
||||
|
||||
To show how to manually use the `Collectable` protocol, let's play with its
|
||||
implementation for `MapSet`.
|
||||
|
||||
iex> {initial_acc, collector_fun} = Collectable.into(MapSet.new())
|
||||
iex> updated_acc = Enum.reduce([1, 2, 3], initial_acc, fn elem, acc ->
|
||||
...> collector_fun.(acc, {:cont, elem})
|
||||
...> end)
|
||||
iex> collector_fun.(updated_acc, :done)
|
||||
#MapSet<[1, 2, 3]>
|
||||
|
||||
To show how the protocol can be implemented, we can take again a look at the
|
||||
implementation for `MapSet`. In this implementation "collecting" elements
|
||||
simply means inserting them in the set through `MapSet.put/2`.
|
||||
|
||||
defimpl Collectable, for: MapSet do
|
||||
def into(original) do
|
||||
collector_fun = fn
|
||||
set, {:cont, elem} -> MapSet.put(set, elem)
|
||||
set, :done -> set
|
||||
_set, :halt -> :ok
|
||||
end
|
||||
|
||||
{original, collector_fun}
|
||||
end
|
||||
end
|
||||
|
||||
"""
|
||||
|
||||
@type command :: {:cont, term} | :done | :halt
|
||||
|
||||
@doc """
|
||||
Returns an initial accumulator and a "collector" function.
|
||||
|
||||
The returned function receives a term and a command and injects the term into
|
||||
the collectable on every `{:cont, term}` command.
|
||||
|
||||
`:done` is passed as a command when no further values will be injected. This
|
||||
is useful when there's a need to close resources or normalizing values. A
|
||||
collectable must be returned when the command is `:done`.
|
||||
|
||||
If injection is suddenly interrupted, `:halt` is passed and the function
|
||||
can return any value as it won't be used.
|
||||
|
||||
For examples on how to use the `Collectable` protocol and `into/1` see the
|
||||
module documentation.
|
||||
"""
|
||||
@spec into(t) :: {term, (term, command -> t | term)}
|
||||
def into(collectable)
|
||||
end
|
||||
|
||||
defimpl Collectable, for: List do
|
||||
def into(original) do
|
||||
if original != [] do
|
||||
IO.warn(
|
||||
"the Collectable protocol is deprecated for non-empty lists. The behaviour of " <>
|
||||
"things like Enum.into/2 or \"for\" comprehensions with an :into option is incorrect " <>
|
||||
"when collecting into non-empty lists. If you're collecting into a non-empty keyword " <>
|
||||
"list, consider using Keyword.merge/2 instead. If you're collecting into a non-empty " <>
|
||||
"list, consider concatenating the two lists with the ++ operator."
|
||||
)
|
||||
end
|
||||
|
||||
fun = fn
|
||||
list, {:cont, x} -> [x | list]
|
||||
list, :done -> original ++ :lists.reverse(list)
|
||||
_, :halt -> :ok
|
||||
end
|
||||
|
||||
{[], fun}
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Collectable, for: BitString do
|
||||
def into(original) when is_binary(original) do
|
||||
fun = fn
|
||||
acc, {:cont, x} when is_binary(x) and is_list(acc) ->
|
||||
[acc | x]
|
||||
|
||||
acc, {:cont, x} when is_bitstring(x) and is_bitstring(acc) ->
|
||||
<<acc::bitstring, x::bitstring>>
|
||||
|
||||
acc, {:cont, x} when is_bitstring(x) ->
|
||||
<<IO.iodata_to_binary(acc)::bitstring, x::bitstring>>
|
||||
|
||||
acc, :done when is_bitstring(acc) ->
|
||||
acc
|
||||
|
||||
acc, :done ->
|
||||
IO.iodata_to_binary(acc)
|
||||
|
||||
_, :halt ->
|
||||
:ok
|
||||
end
|
||||
|
||||
{[original], fun}
|
||||
end
|
||||
|
||||
def into(original) when is_bitstring(original) do
|
||||
fun = fn
|
||||
acc, {:cont, x} when is_bitstring(x) ->
|
||||
<<acc::bitstring, x::bitstring>>
|
||||
|
||||
acc, :done ->
|
||||
acc
|
||||
|
||||
_, :halt ->
|
||||
:ok
|
||||
end
|
||||
|
||||
{original, fun}
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Collectable, for: Map do
|
||||
def into(original) do
|
||||
fun = fn
|
||||
map, {:cont, {k, v}} -> :maps.put(k, v, map)
|
||||
map, :done -> map
|
||||
_, :halt -> :ok
|
||||
end
|
||||
|
||||
{original, fun}
|
||||
end
|
||||
end
|
||||
@@ -1,266 +0,0 @@
|
||||
defmodule Config do
|
||||
@moduledoc ~S"""
|
||||
A simple keyword-based configuration API.
|
||||
|
||||
## Example
|
||||
|
||||
This module is most commonly used to define application configuration,
|
||||
typically in `config/config.exs`:
|
||||
|
||||
import Config
|
||||
|
||||
config :some_app,
|
||||
key1: "value1",
|
||||
key2: "value2"
|
||||
|
||||
import_config "#{Mix.env()}.exs"
|
||||
|
||||
`import Config` will import the functions `config/2`, `config/3`
|
||||
and `import_config/1` to help you manage your configuration.
|
||||
|
||||
`config/2` and `config/3` are used to define key-value configuration
|
||||
for a given application. Once Mix starts, it will automatically
|
||||
evaluate the configuration file and persist the configuration above
|
||||
into `:some_app`'s application environment, which can be accessed in
|
||||
as follows:
|
||||
|
||||
"value1" = Application.fetch_env!(:some_app, :key1)
|
||||
|
||||
Finally, the line `import_config "#{Mix.env()}.exs"` will import other
|
||||
config files, based on the current Mix environment, such as
|
||||
`config/dev.exs` and `config/test.exs`.
|
||||
|
||||
`Config` also provides a low-level API for evaluating and reading
|
||||
configuration, under the `Config.Reader` module.
|
||||
|
||||
**Important:** if you are writing a library to be used by other developers,
|
||||
it is generally recommended to avoid the application environment, as the
|
||||
application environment is effectively a global storage. For more information,
|
||||
read our [library guidelines](library-guidelines.html).
|
||||
|
||||
## Migrating from `use Mix.Config`
|
||||
|
||||
The `Config` module in Elixir was introduced in v1.9 as a replacement to
|
||||
`Mix.Config`, which was specific to Mix and has been deprecated.
|
||||
|
||||
You can leverage `Config` instead of `Mix.Config` in two steps. The first
|
||||
step is to replace `use Mix.Config` at the top of your config files by
|
||||
`import Config`.
|
||||
|
||||
The second is to make sure your `import_config/1` calls do not have a
|
||||
wildcard character. If so, you need to perform the wildcard lookup
|
||||
manually. For example, if you did:
|
||||
|
||||
import_config "../apps/*/config/config.exs"
|
||||
|
||||
It has to be replaced by:
|
||||
|
||||
for config <- "../apps/*/config/config.exs" |> Path.expand(__DIR__) |> Path.wildcard() do
|
||||
import_config config
|
||||
end
|
||||
|
||||
## config/releases.exs
|
||||
|
||||
If you are using releases, see `mix release`, there another configuration
|
||||
file called `config/releases.exs`. While `config/config.exs` and friends
|
||||
mentioned in the previous section are executed whenever you run a Mix
|
||||
command, including when you assemble a release, `config/releases.exs` is
|
||||
execute every time your production system boots. Since Mix is not available
|
||||
in a production system, `config/releases.exs` must not use any of the
|
||||
functions from Mix.
|
||||
"""
|
||||
|
||||
@config_key {__MODULE__, :config}
|
||||
@files_key {__MODULE__, :files}
|
||||
|
||||
defp get_config!() do
|
||||
Process.get(@config_key) || raise_improper_use!()
|
||||
end
|
||||
|
||||
defp put_config(value) do
|
||||
Process.put(@config_key, value)
|
||||
end
|
||||
|
||||
defp delete_config() do
|
||||
Process.delete(@config_key)
|
||||
end
|
||||
|
||||
defp get_files!() do
|
||||
Process.get(@files_key) || raise_improper_use!()
|
||||
end
|
||||
|
||||
defp put_files(value) do
|
||||
Process.put(@files_key, value)
|
||||
end
|
||||
|
||||
defp delete_files() do
|
||||
Process.delete(@files_key)
|
||||
end
|
||||
|
||||
defp raise_improper_use!() do
|
||||
raise "could not set configuration via Config. " <>
|
||||
"This usually means you are trying to execute a configuration file " <>
|
||||
"directly, instead of reading it with Config.Reader"
|
||||
end
|
||||
|
||||
@doc """
|
||||
Configures the given `root_key`.
|
||||
|
||||
Keyword lists are always deep-merged.
|
||||
|
||||
## Examples
|
||||
|
||||
The given `opts` are merged into the existing configuration
|
||||
for the given `root_key`. Conflicting keys are overridden by the
|
||||
ones specified in `opts`. For example, the application
|
||||
configuration below
|
||||
|
||||
config :logger,
|
||||
level: :warn,
|
||||
backends: [:console]
|
||||
|
||||
config :logger,
|
||||
level: :info,
|
||||
truncate: 1024
|
||||
|
||||
will have a final configuration for `:logger` of:
|
||||
|
||||
[level: :info, backends: [:console], truncate: 1024]
|
||||
|
||||
"""
|
||||
@doc since: "1.9.0"
|
||||
def config(root_key, opts) when is_atom(root_key) and is_list(opts) do
|
||||
unless Keyword.keyword?(opts) do
|
||||
raise ArgumentError, "config/2 expected a keyword list, got: #{inspect(opts)}"
|
||||
end
|
||||
|
||||
get_config!()
|
||||
|> __merge__([{root_key, opts}])
|
||||
|> put_config()
|
||||
end
|
||||
|
||||
@doc """
|
||||
Configures the given `key` for the given `root_key`.
|
||||
|
||||
Keyword lists are always deep merged.
|
||||
|
||||
## Examples
|
||||
|
||||
The given `opts` are merged into the existing values for `key`
|
||||
in the given `root_key`. Conflicting keys are overridden by the
|
||||
ones specified in `opts`. For example, the application
|
||||
configuration below
|
||||
|
||||
config :ecto, Repo,
|
||||
log_level: :warn,
|
||||
adapter: Ecto.Adapters.Postgres
|
||||
|
||||
config :ecto, Repo,
|
||||
log_level: :info,
|
||||
pool_size: 10
|
||||
|
||||
will have a final value of the configuration for the `Repo`
|
||||
key in the `:ecto` application of:
|
||||
|
||||
[log_level: :info, pool_size: 10, adapter: Ecto.Adapters.Postgres]
|
||||
|
||||
"""
|
||||
@doc since: "1.9.0"
|
||||
def config(root_key, key, opts) when is_atom(root_key) and is_atom(key) do
|
||||
get_config!()
|
||||
|> __merge__([{root_key, [{key, opts}]}])
|
||||
|> put_config()
|
||||
end
|
||||
|
||||
@doc ~S"""
|
||||
Imports configuration from the given file.
|
||||
|
||||
In case the file doesn't exist, an error is raised.
|
||||
|
||||
If file is a relative, it will be expanded relatively to the
|
||||
directory the current configuration file is in.
|
||||
|
||||
## Examples
|
||||
|
||||
This is often used to emulate configuration across environments:
|
||||
|
||||
import_config "#{Mix.env()}.exs"
|
||||
|
||||
"""
|
||||
@doc since: "1.9.0"
|
||||
defmacro import_config(file) do
|
||||
quote do
|
||||
Config.__import__!(Path.expand(unquote(file), __DIR__))
|
||||
:ok
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
@spec __import__!(Path.t()) :: keyword()
|
||||
def __import__!(file) when is_binary(file) do
|
||||
current_files = get_files!()
|
||||
|
||||
if file in current_files do
|
||||
raise ArgumentError,
|
||||
"attempting to load configuration #{Path.relative_to_cwd(file)} recursively"
|
||||
end
|
||||
|
||||
put_files([file | current_files])
|
||||
Code.eval_file(file)
|
||||
end
|
||||
|
||||
@doc false
|
||||
@spec __eval__!(Path.t(), [Path.t()]) :: {keyword, [Path.t()]}
|
||||
def __eval__!(file, imported_paths \\ []) when is_binary(file) and is_list(imported_paths) do
|
||||
previous_config = put_config([])
|
||||
previous_files = put_files(imported_paths)
|
||||
|
||||
try do
|
||||
{eval_config, _} = __import__!(Path.expand(file))
|
||||
|
||||
case get_config!() do
|
||||
[] when is_list(eval_config) ->
|
||||
{validate!(eval_config, file), get_files!()}
|
||||
|
||||
pdict_config ->
|
||||
{pdict_config, get_files!()}
|
||||
end
|
||||
after
|
||||
if previous_config, do: put_config(previous_config), else: delete_config()
|
||||
if previous_files, do: put_files(previous_files), else: delete_files()
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
def __merge__(config1, config2) when is_list(config1) and is_list(config2) do
|
||||
Keyword.merge(config1, config2, fn _, app1, app2 ->
|
||||
Keyword.merge(app1, app2, &deep_merge/3)
|
||||
end)
|
||||
end
|
||||
|
||||
defp deep_merge(_key, value1, value2) do
|
||||
if Keyword.keyword?(value1) and Keyword.keyword?(value2) do
|
||||
Keyword.merge(value1, value2, &deep_merge/3)
|
||||
else
|
||||
value2
|
||||
end
|
||||
end
|
||||
|
||||
defp validate!(config, file) do
|
||||
Enum.all?(config, fn
|
||||
{app, value} when is_atom(app) ->
|
||||
if Keyword.keyword?(value) do
|
||||
true
|
||||
else
|
||||
raise ArgumentError,
|
||||
"expected config for app #{inspect(app)} in #{Path.relative_to_cwd(file)} " <>
|
||||
"to return keyword list, got: #{inspect(value)}"
|
||||
end
|
||||
|
||||
_ ->
|
||||
false
|
||||
end)
|
||||
|
||||
config
|
||||
end
|
||||
end
|
||||
@@ -1,249 +0,0 @@
|
||||
defmodule Config.Provider do
|
||||
@moduledoc """
|
||||
Specifies a provider API that loads configuration during boot.
|
||||
|
||||
Config providers are typically used during releases to load
|
||||
external configuration while the system boots. This is done
|
||||
by starting the VM with the minimum amount of applications
|
||||
running, then invoking all of the providers, and then
|
||||
restarting the system. This requires a mutable configuration
|
||||
file on disk, as the results of the providers are written to
|
||||
the file system. For more information on runtime configuration,
|
||||
see `mix release`.
|
||||
|
||||
## Sample config provider
|
||||
|
||||
For example, imagine you need to load some configuration from
|
||||
a JSON file and load that into the system. Said configuration
|
||||
provider would look like:
|
||||
|
||||
defmodule JSONConfigProvider do
|
||||
@behaviour Config.Provider
|
||||
|
||||
# Let's pass the path to the JSON file as config
|
||||
def init(path) when is_binary(path), do: path
|
||||
|
||||
def load(config, path) do
|
||||
# We need to start any app we may depend on.
|
||||
{:ok, _} = Application.ensure_all_started(:jason)
|
||||
|
||||
json = path |> File.read!() |> Jason.decode!()
|
||||
|
||||
Config.Reader.merge(
|
||||
config,
|
||||
my_app: [
|
||||
some_value: json["my_app_some_value"],
|
||||
another_value: json["my_app_another_value"],
|
||||
]
|
||||
)
|
||||
end
|
||||
end
|
||||
|
||||
Then when specifying your release, you can specify the provider:
|
||||
|
||||
config_providers: [{JSONConfigProvider, "/etc/config.json"}]
|
||||
|
||||
Now once the system boots, it will invoke the provider early in
|
||||
the boot process, save the merged configuration to the disk, and
|
||||
reboot the system with the new values in place.
|
||||
"""
|
||||
|
||||
@type config :: keyword
|
||||
@type state :: term
|
||||
|
||||
@typedoc """
|
||||
A path pointing to a configuration file.
|
||||
|
||||
Since configuration files are often accessed on target machines,
|
||||
it can be expressed either as:
|
||||
|
||||
* a binary representing an absolute path
|
||||
|
||||
* a tuple {:system, system_var, path} where the config is the
|
||||
concatenation of the `system_var` with the given `path`
|
||||
|
||||
"""
|
||||
@type config_path :: {:system, binary(), binary()} | binary()
|
||||
|
||||
@doc """
|
||||
Invoked when initializing a config provider.
|
||||
|
||||
A config provider is typically initialized on the machine
|
||||
where the system is assembled and not on the target machine.
|
||||
The `c:init/1` callback is useful to verify the arguments
|
||||
given to the provider and prepare the state that will be
|
||||
given to `c:load/2`.
|
||||
|
||||
Furthermore, because the state returned by `c:init/1` can
|
||||
be written to text-based config files, it should be
|
||||
restricted only to simple data types, such as integers,
|
||||
strings, atoms, tuples, maps, and lists. Entries such as
|
||||
PIDs, references, and functions cannot be serialized.
|
||||
"""
|
||||
@callback init(term) :: state
|
||||
|
||||
@doc """
|
||||
Loads configuration (typically during system boot).
|
||||
|
||||
It receives the current `config` and the `state` returned by
|
||||
`c:init/1`. Then you typically read the extra configuration
|
||||
from an external source and merge it into the received `config`.
|
||||
Merging should be done with `Config.Reader.merge/2`, as it
|
||||
performs deep merge. It should return the updated config.
|
||||
|
||||
Note that `c:load/2` is typically invoked very early in the
|
||||
boot process, therefore if you need to use an application
|
||||
in the provider, it is your responsibility to start it.
|
||||
"""
|
||||
@callback load(config, state) :: config
|
||||
|
||||
@doc false
|
||||
defstruct [:providers, :config_path, extra_config: [], prune_after_boot: false]
|
||||
|
||||
@doc """
|
||||
Validates a `t:config_path/0`.
|
||||
"""
|
||||
@doc since: "1.9.0"
|
||||
@spec validate_config_path!(config_path) :: :ok
|
||||
def validate_config_path!({:system, name, path})
|
||||
when is_binary(name) and is_binary(path),
|
||||
do: :ok
|
||||
|
||||
def validate_config_path!(path) do
|
||||
if is_binary(path) and Path.type(path) != :relative do
|
||||
:ok
|
||||
else
|
||||
raise ArgumentError, """
|
||||
expected configuration path to be:
|
||||
|
||||
* a binary representing an absolute path
|
||||
* a tuple {:system, system_var, path} where the config is the \
|
||||
concatenation of the `system_var` with the given `path`
|
||||
|
||||
Got: #{inspect(path)}
|
||||
"""
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Resolves a `t:config_path/0` to an actual path.
|
||||
"""
|
||||
@doc since: "1.9.0"
|
||||
@spec resolve_config_path!(config_path) :: binary
|
||||
def resolve_config_path!(path) when is_binary(path), do: path
|
||||
def resolve_config_path!({:system, name, path}), do: System.fetch_env!(name) <> path
|
||||
|
||||
@doc false
|
||||
def init(providers, config_path, opts \\ []) when is_list(providers) and is_list(opts) do
|
||||
validate_config_path!(config_path)
|
||||
providers = for {provider, init} <- providers, do: {provider, provider.init(init)}
|
||||
struct!(%Config.Provider{config_path: config_path, providers: providers}, opts)
|
||||
end
|
||||
|
||||
@doc false
|
||||
def boot(app, key, restart_fun \\ &System.restart/0) do
|
||||
# The app with the config provider settings may not
|
||||
# have been loaded at this point, so make sure we load
|
||||
# its environment before querying it.
|
||||
_ = :application.load(app)
|
||||
|
||||
# The config provider typically runs very early in the
|
||||
# release process, so we need to make sure Elixir is started
|
||||
# before we go around running Elixir code.
|
||||
{:ok, _} = :application.ensure_all_started(:elixir)
|
||||
|
||||
case :application.get_env(app, key) do
|
||||
{:ok, %Config.Provider{} = provider} ->
|
||||
path = resolve_config_path!(provider.config_path)
|
||||
validate_no_cyclic_boot!(path)
|
||||
|
||||
read_config!(path)
|
||||
|> Config.__merge__([{app, [{key, booted_key(provider, path)}]} | provider.extra_config])
|
||||
|> run_providers(provider)
|
||||
|> write_config!(path)
|
||||
|
||||
restart_fun.()
|
||||
|
||||
{:ok, {:booted, path}} ->
|
||||
File.rm(path)
|
||||
:booted
|
||||
|
||||
{:ok, :booted} ->
|
||||
:booted
|
||||
|
||||
_ ->
|
||||
:skip
|
||||
end
|
||||
end
|
||||
|
||||
defp booted_key(%{prune_after_boot: true}, path), do: {:booted, path}
|
||||
defp booted_key(%{prune_after_boot: false}, _path), do: :booted
|
||||
|
||||
defp validate_no_cyclic_boot!(path) do
|
||||
if System.get_env("ELIXIR_CONFIG_PROVIDER_BOOTED") do
|
||||
bad_path_abort("Got infinite loop when running Config.Provider", path)
|
||||
else
|
||||
System.put_env("ELIXIR_CONFIG_PROVIDER_BOOTED", "1")
|
||||
end
|
||||
end
|
||||
|
||||
defp read_config!(path) do
|
||||
case :file.consult(path) do
|
||||
{:ok, [inner]} ->
|
||||
inner
|
||||
|
||||
{:error, reason} ->
|
||||
bad_path_abort(
|
||||
"Could not read runtime configuration due to reason: #{inspect(reason)}",
|
||||
path
|
||||
)
|
||||
end
|
||||
end
|
||||
|
||||
defp run_providers(config, %{providers: providers}) do
|
||||
Enum.reduce(providers, config, fn {provider, state}, acc ->
|
||||
try do
|
||||
provider.load(acc, state)
|
||||
catch
|
||||
kind, error ->
|
||||
IO.puts(:stderr, "ERROR! Config provider #{inspect(provider)} failed with:")
|
||||
IO.puts(:stderr, Exception.format(kind, error, __STACKTRACE__))
|
||||
:erlang.raise(kind, error, __STACKTRACE__)
|
||||
else
|
||||
term when is_list(term) ->
|
||||
term
|
||||
|
||||
term ->
|
||||
abort("Expected provider #{inspect(provider)} to return a list, got: #{inspect(term)}")
|
||||
end
|
||||
end)
|
||||
end
|
||||
|
||||
defp write_config!(config, path) do
|
||||
contents = :io_lib.format("%% coding: utf-8~n~tw.~n", [config])
|
||||
|
||||
case File.write(path, contents, [:utf8]) do
|
||||
:ok ->
|
||||
:ok
|
||||
|
||||
{:error, reason} ->
|
||||
bad_path_abort(
|
||||
"Could not write runtime configuration due to reason: #{inspect(reason)}",
|
||||
path
|
||||
)
|
||||
end
|
||||
end
|
||||
|
||||
defp bad_path_abort(msg, path) do
|
||||
abort(
|
||||
msg <>
|
||||
". Please make sure #{inspect(path)} is writable and accessible " <>
|
||||
"or choose a different path"
|
||||
)
|
||||
end
|
||||
|
||||
defp abort(msg) do
|
||||
IO.puts(:stderr, "ERROR! " <> msg)
|
||||
raise(msg)
|
||||
end
|
||||
end
|
||||
@@ -1,87 +0,0 @@
|
||||
defmodule Config.Reader do
|
||||
@moduledoc """
|
||||
API for reading config files defined with `Config`.
|
||||
|
||||
## As a provider
|
||||
|
||||
`Config.Reader` can also be used as a `Config.Provider`.
|
||||
When used as a provider, it expects a single argument:
|
||||
which the configuration path (as outlined in
|
||||
`t:Config.Provider.config_path/0`) for the configuration
|
||||
to be read and loaded during the system boot.
|
||||
"""
|
||||
|
||||
@behaviour Config.Provider
|
||||
|
||||
@impl true
|
||||
def init(path) do
|
||||
Config.Provider.validate_config_path!(path)
|
||||
path
|
||||
end
|
||||
|
||||
@impl true
|
||||
def load(config, path) do
|
||||
merge(config, path |> Config.Provider.resolve_config_path!() |> read!())
|
||||
end
|
||||
|
||||
@doc """
|
||||
Reads the configuration file.
|
||||
|
||||
The same as `read_imports!/2` but only returns the configuration
|
||||
in the given file, without returning the imported paths.
|
||||
|
||||
It exists for convenience purposes. For example, you could
|
||||
invoke it inside your `mix.exs` to read some external data
|
||||
you decided to move to a configuration file:
|
||||
|
||||
releases: Config.Reader.read!("rel/releases.exs")
|
||||
|
||||
"""
|
||||
@doc since: "1.9.0"
|
||||
@spec read!(Path.t(), [Path.t()]) :: keyword
|
||||
def read!(file, imported_paths \\ [])
|
||||
when is_binary(file) and is_list(imported_paths) do
|
||||
Config.__eval__!(file, imported_paths) |> elem(0)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Reads the given configuration file alongside its imports.
|
||||
|
||||
It accepts a list of `imported_paths` that should raise if attempted
|
||||
to be imported again (to avoid recursive imports).
|
||||
|
||||
It returns a tuple with the configuration and the imported paths.
|
||||
"""
|
||||
@doc since: "1.9.0"
|
||||
@spec read_imports!(Path.t(), [Path.t()]) :: {keyword, [Path.t()]}
|
||||
def read_imports!(file, imported_paths \\ [])
|
||||
when is_binary(file) and is_list(imported_paths) do
|
||||
Config.__eval__!(file, imported_paths)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Merges two configurations.
|
||||
|
||||
The configurations are merged together with the values in
|
||||
the second one having higher preference than the first in
|
||||
case of conflicts. In case both values are set to keyword
|
||||
lists, it deep merges them.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Config.Reader.merge([app: [k: :v1]], [app: [k: :v2]])
|
||||
[app: [k: :v2]]
|
||||
|
||||
iex> Config.Reader.merge([app: [k: [v1: 1, v2: 2]]], [app: [k: [v2: :a, v3: :b]]])
|
||||
[app: [k: [v1: 1, v2: :a, v3: :b]]]
|
||||
|
||||
iex> Config.Reader.merge([app1: []], [app2: []])
|
||||
[app1: [], app2: []]
|
||||
|
||||
"""
|
||||
@doc since: "1.9.0"
|
||||
@spec merge(keyword, keyword) :: keyword
|
||||
def merge(config1, config2) when is_list(config1) and is_list(config2) do
|
||||
Config.__merge__(config1, config2)
|
||||
end
|
||||
end
|
||||
@@ -1,440 +0,0 @@
|
||||
defmodule Dict do
|
||||
@moduledoc ~S"""
|
||||
Generic API for dictionaries.
|
||||
|
||||
If you need a general dictionary, use the `Map` module.
|
||||
If you need to manipulate keyword lists, use `Keyword`.
|
||||
|
||||
To convert maps into keywords and vice-versa, use the
|
||||
`new` function in the respective modules.
|
||||
"""
|
||||
|
||||
@moduledoc deprecated: "Use Map or Keyword modules instead"
|
||||
|
||||
@type key :: any
|
||||
@type value :: any
|
||||
@type t :: list | map
|
||||
|
||||
message =
|
||||
"Use the Map module for working with maps or the Keyword module for working with keyword lists"
|
||||
|
||||
@deprecated message
|
||||
defmacro __using__(_) do
|
||||
# Use this import to guarantee proper code expansion
|
||||
import Kernel, except: [size: 1]
|
||||
|
||||
quote do
|
||||
message = "Use maps and the Map module instead"
|
||||
|
||||
@deprecated message
|
||||
def get(dict, key, default \\ nil) do
|
||||
case fetch(dict, key) do
|
||||
{:ok, value} -> value
|
||||
:error -> default
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def get_lazy(dict, key, fun) when is_function(fun, 0) do
|
||||
case fetch(dict, key) do
|
||||
{:ok, value} -> value
|
||||
:error -> fun.()
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def get_and_update(dict, key, fun) do
|
||||
current_value = get(dict, key)
|
||||
{get, new_value} = fun.(current_value)
|
||||
{get, put(dict, key, new_value)}
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def fetch!(dict, key) do
|
||||
case fetch(dict, key) do
|
||||
{:ok, value} -> value
|
||||
:error -> raise KeyError, key: key, term: dict
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def has_key?(dict, key) do
|
||||
match?({:ok, _}, fetch(dict, key))
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def put_new(dict, key, value) do
|
||||
case has_key?(dict, key) do
|
||||
true -> dict
|
||||
false -> put(dict, key, value)
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def put_new_lazy(dict, key, fun) when is_function(fun, 0) do
|
||||
case has_key?(dict, key) do
|
||||
true -> dict
|
||||
false -> put(dict, key, fun.())
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def drop(dict, keys) do
|
||||
Enum.reduce(keys, dict, &delete(&2, &1))
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def take(dict, keys) do
|
||||
Enum.reduce(keys, new(), fn key, acc ->
|
||||
case fetch(dict, key) do
|
||||
{:ok, value} -> put(acc, key, value)
|
||||
:error -> acc
|
||||
end
|
||||
end)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def to_list(dict) do
|
||||
reduce(dict, {:cont, []}, fn kv, acc -> {:cont, [kv | acc]} end)
|
||||
|> elem(1)
|
||||
|> :lists.reverse()
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def keys(dict) do
|
||||
reduce(dict, {:cont, []}, fn {k, _}, acc -> {:cont, [k | acc]} end)
|
||||
|> elem(1)
|
||||
|> :lists.reverse()
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def values(dict) do
|
||||
reduce(dict, {:cont, []}, fn {_, v}, acc -> {:cont, [v | acc]} end)
|
||||
|> elem(1)
|
||||
|> :lists.reverse()
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def equal?(dict1, dict2) do
|
||||
# Use this import to avoid conflicts in the user code
|
||||
import Kernel, except: [size: 1]
|
||||
|
||||
case size(dict1) == size(dict2) do
|
||||
false ->
|
||||
false
|
||||
|
||||
true ->
|
||||
reduce(dict1, {:cont, true}, fn {k, v}, _acc ->
|
||||
case fetch(dict2, k) do
|
||||
{:ok, ^v} -> {:cont, true}
|
||||
_ -> {:halt, false}
|
||||
end
|
||||
end)
|
||||
|> elem(1)
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def merge(dict1, dict2, fun \\ fn _k, _v1, v2 -> v2 end) do
|
||||
# Use this import to avoid conflicts in the user code
|
||||
import Kernel, except: [size: 1]
|
||||
|
||||
if size(dict1) < size(dict2) do
|
||||
reduce(dict1, {:cont, dict2}, fn {k, v1}, acc ->
|
||||
{:cont, update(acc, k, v1, &fun.(k, v1, &1))}
|
||||
end)
|
||||
else
|
||||
reduce(dict2, {:cont, dict1}, fn {k, v2}, acc ->
|
||||
{:cont, update(acc, k, v2, &fun.(k, &1, v2))}
|
||||
end)
|
||||
end
|
||||
|> elem(1)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def update(dict, key, initial, fun) do
|
||||
case fetch(dict, key) do
|
||||
{:ok, value} ->
|
||||
put(dict, key, fun.(value))
|
||||
|
||||
:error ->
|
||||
put(dict, key, initial)
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def update!(dict, key, fun) do
|
||||
case fetch(dict, key) do
|
||||
{:ok, value} ->
|
||||
put(dict, key, fun.(value))
|
||||
|
||||
:error ->
|
||||
raise KeyError, key: key, term: dict
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def pop(dict, key, default \\ nil) do
|
||||
case fetch(dict, key) do
|
||||
{:ok, value} ->
|
||||
{value, delete(dict, key)}
|
||||
|
||||
:error ->
|
||||
{default, dict}
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def pop_lazy(dict, key, fun) when is_function(fun, 0) do
|
||||
case fetch(dict, key) do
|
||||
{:ok, value} ->
|
||||
{value, delete(dict, key)}
|
||||
|
||||
:error ->
|
||||
{fun.(), dict}
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def split(dict, keys) do
|
||||
Enum.reduce(keys, {new(), dict}, fn key, {inc, exc} = acc ->
|
||||
case fetch(exc, key) do
|
||||
{:ok, value} ->
|
||||
{put(inc, key, value), delete(exc, key)}
|
||||
|
||||
:error ->
|
||||
acc
|
||||
end
|
||||
end)
|
||||
end
|
||||
|
||||
defoverridable merge: 2,
|
||||
merge: 3,
|
||||
equal?: 2,
|
||||
to_list: 1,
|
||||
keys: 1,
|
||||
values: 1,
|
||||
take: 2,
|
||||
drop: 2,
|
||||
get: 2,
|
||||
get: 3,
|
||||
fetch!: 2,
|
||||
has_key?: 2,
|
||||
put_new: 3,
|
||||
pop: 2,
|
||||
pop: 3,
|
||||
split: 2,
|
||||
update: 4,
|
||||
update!: 3,
|
||||
get_and_update: 3,
|
||||
get_lazy: 3,
|
||||
pop_lazy: 3,
|
||||
put_new_lazy: 3
|
||||
end
|
||||
end
|
||||
|
||||
defmacrop target(dict) do
|
||||
quote do
|
||||
case unquote(dict) do
|
||||
%module{} -> module
|
||||
%{} -> Map
|
||||
dict when is_list(dict) -> Keyword
|
||||
dict -> unsupported_dict(dict)
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec keys(t) :: [key]
|
||||
def keys(dict) do
|
||||
target(dict).keys(dict)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec values(t) :: [value]
|
||||
def values(dict) do
|
||||
target(dict).values(dict)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec size(t) :: non_neg_integer
|
||||
def size(dict) do
|
||||
target(dict).size(dict)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec has_key?(t, key) :: boolean
|
||||
def has_key?(dict, key) do
|
||||
target(dict).has_key?(dict, key)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec get(t, key, value) :: value
|
||||
def get(dict, key, default \\ nil) do
|
||||
target(dict).get(dict, key, default)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec get_lazy(t, key, (() -> value)) :: value
|
||||
def get_lazy(dict, key, fun) do
|
||||
target(dict).get_lazy(dict, key, fun)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec get_and_update(t, key, (value -> {value, value})) :: {value, t}
|
||||
def get_and_update(dict, key, fun) do
|
||||
target(dict).get_and_update(dict, key, fun)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec fetch(t, key) :: value
|
||||
def fetch(dict, key) do
|
||||
target(dict).fetch(dict, key)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec fetch!(t, key) :: value
|
||||
def fetch!(dict, key) do
|
||||
target(dict).fetch!(dict, key)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec put(t, key, value) :: t
|
||||
def put(dict, key, val) do
|
||||
target(dict).put(dict, key, val)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec put_new(t, key, value) :: t
|
||||
def put_new(dict, key, val) do
|
||||
target(dict).put_new(dict, key, val)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec put_new_lazy(t, key, (() -> value)) :: t
|
||||
def put_new_lazy(dict, key, fun) do
|
||||
target(dict).put_new_lazy(dict, key, fun)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec delete(t, key) :: t
|
||||
def delete(dict, key) do
|
||||
target(dict).delete(dict, key)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec merge(t, t) :: t
|
||||
def merge(dict1, dict2) do
|
||||
target1 = target(dict1)
|
||||
target2 = target(dict2)
|
||||
|
||||
if target1 == target2 do
|
||||
target1.merge(dict1, dict2)
|
||||
else
|
||||
do_merge(target1, dict1, dict2, fn _k, _v1, v2 -> v2 end)
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec merge(t, t, (key, value, value -> value)) :: t
|
||||
def merge(dict1, dict2, fun) do
|
||||
target1 = target(dict1)
|
||||
target2 = target(dict2)
|
||||
|
||||
if target1 == target2 do
|
||||
target1.merge(dict1, dict2, fun)
|
||||
else
|
||||
do_merge(target1, dict1, dict2, fun)
|
||||
end
|
||||
end
|
||||
|
||||
defp do_merge(target1, dict1, dict2, fun) do
|
||||
Enumerable.reduce(dict2, {:cont, dict1}, fn {k, v}, acc ->
|
||||
{:cont, target1.update(acc, k, v, fn other -> fun.(k, other, v) end)}
|
||||
end)
|
||||
|> elem(1)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec pop(t, key, value) :: {value, t}
|
||||
def pop(dict, key, default \\ nil) do
|
||||
target(dict).pop(dict, key, default)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec pop_lazy(t, key, (() -> value)) :: {value, t}
|
||||
def pop_lazy(dict, key, fun) do
|
||||
target(dict).pop_lazy(dict, key, fun)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec update!(t, key, (value -> value)) :: t
|
||||
def update!(dict, key, fun) do
|
||||
target(dict).update!(dict, key, fun)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec update(t, key, value, (value -> value)) :: t
|
||||
def update(dict, key, initial, fun) do
|
||||
target(dict).update(dict, key, initial, fun)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec split(t, [key]) :: {t, t}
|
||||
def split(dict, keys) do
|
||||
target(dict).split(dict, keys)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec drop(t, [key]) :: t
|
||||
def drop(dict, keys) do
|
||||
target(dict).drop(dict, keys)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec take(t, [key]) :: t
|
||||
def take(dict, keys) do
|
||||
target(dict).take(dict, keys)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec empty(t) :: t
|
||||
def empty(dict) do
|
||||
target(dict).empty(dict)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec equal?(t, t) :: boolean
|
||||
def equal?(dict1, dict2) do
|
||||
target1 = target(dict1)
|
||||
target2 = target(dict2)
|
||||
|
||||
cond do
|
||||
target1 == target2 ->
|
||||
target1.equal?(dict1, dict2)
|
||||
|
||||
target1.size(dict1) == target2.size(dict2) ->
|
||||
Enumerable.reduce(dict2, {:cont, true}, fn {k, v}, _acc ->
|
||||
case target1.fetch(dict1, k) do
|
||||
{:ok, ^v} -> {:cont, true}
|
||||
_ -> {:halt, false}
|
||||
end
|
||||
end)
|
||||
|> elem(1)
|
||||
|
||||
true ->
|
||||
false
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
@spec to_list(t) :: list
|
||||
def to_list(dict) do
|
||||
target(dict).to_list(dict)
|
||||
end
|
||||
|
||||
@spec unsupported_dict(t) :: no_return
|
||||
defp unsupported_dict(dict) do
|
||||
raise ArgumentError, "unsupported dict: #{inspect(dict)}"
|
||||
end
|
||||
end
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@@ -1,95 +0,0 @@
|
||||
require Record
|
||||
|
||||
defmodule File.Stat do
|
||||
@moduledoc """
|
||||
A struct that holds file information.
|
||||
|
||||
In Erlang, this struct is represented by a `:file_info` record.
|
||||
Therefore this module also provides functions for converting
|
||||
between the Erlang record and the Elixir struct.
|
||||
|
||||
Its fields are:
|
||||
|
||||
* `size` - size of file in bytes.
|
||||
|
||||
* `type` - `:device | :directory | :regular | :other | :symlink`; the type of the
|
||||
file.
|
||||
|
||||
* `access` - `:read | :write | :read_write | :none`; the current system
|
||||
access to the file.
|
||||
|
||||
* `atime` - the last time the file was read.
|
||||
|
||||
* `mtime` - the last time the file was written.
|
||||
|
||||
* `ctime` - the interpretation of this time field depends on the operating
|
||||
system. On Unix, it is the last time the file or the inode was changed.
|
||||
In Windows, it is the time of creation.
|
||||
|
||||
* `mode` - the file permissions.
|
||||
|
||||
* `links` - the number of links to this file. This is always 1 for file
|
||||
systems which have no concept of links.
|
||||
|
||||
* `major_device` - identifies the file system where the file is located.
|
||||
In Windows, the number indicates a drive as follows: 0 means A:, 1 means
|
||||
B:, and so on.
|
||||
|
||||
* `minor_device` - only valid for character devices on Unix. In all other
|
||||
cases, this field is zero.
|
||||
|
||||
* `inode` - gives the inode number. On non-Unix file systems, this field
|
||||
will be zero.
|
||||
|
||||
* `uid` - indicates the owner of the file. Will be zero for non-Unix file
|
||||
systems.
|
||||
|
||||
* `gid` - indicates the group that owns the file. Will be zero for
|
||||
non-Unix file systems.
|
||||
|
||||
The time type returned in `atime`, `mtime`, and `ctime` is dependent on the
|
||||
time type set in options. `{:time, type}` where type can be `:local`,
|
||||
`:universal`, or `:posix`. Default is `:universal`.
|
||||
"""
|
||||
|
||||
record = Record.extract(:file_info, from_lib: "kernel/include/file.hrl")
|
||||
keys = :lists.map(&elem(&1, 0), record)
|
||||
vals = :lists.map(&{&1, [], nil}, keys)
|
||||
pairs = :lists.zip(keys, vals)
|
||||
|
||||
defstruct keys
|
||||
|
||||
@type t :: %__MODULE__{
|
||||
size: non_neg_integer(),
|
||||
type: :device | :directory | :regular | :other | :symlink,
|
||||
access: :read | :write | :read_write | :none,
|
||||
atime: :calendar.datetime() | integer(),
|
||||
mtime: :calendar.datetime() | integer(),
|
||||
ctime: :calendar.datetime() | integer(),
|
||||
mode: non_neg_integer(),
|
||||
links: non_neg_integer(),
|
||||
major_device: non_neg_integer(),
|
||||
minor_device: non_neg_integer(),
|
||||
inode: non_neg_integer(),
|
||||
uid: non_neg_integer(),
|
||||
gid: non_neg_integer()
|
||||
}
|
||||
|
||||
@doc """
|
||||
Converts a `File.Stat` struct to a `:file_info` record.
|
||||
"""
|
||||
@spec to_record(t()) :: :file.file_info()
|
||||
def to_record(%File.Stat{unquote_splicing(pairs)}) do
|
||||
{:file_info, unquote_splicing(vals)}
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts a `:file_info` record into a `File.Stat`.
|
||||
"""
|
||||
@spec from_record(:file.file_info()) :: t()
|
||||
def from_record(file_info)
|
||||
|
||||
def from_record({:file_info, unquote_splicing(vals)}) do
|
||||
%File.Stat{unquote_splicing(pairs)}
|
||||
end
|
||||
end
|
||||
@@ -1,190 +0,0 @@
|
||||
defmodule File.Stream do
|
||||
@moduledoc """
|
||||
Defines a `File.Stream` struct returned by `File.stream!/3`.
|
||||
|
||||
The following fields are public:
|
||||
|
||||
* `path` - the file path
|
||||
* `modes` - the file modes
|
||||
* `raw` - a boolean indicating if bin functions should be used
|
||||
* `line_or_bytes` - if reading should read lines or a given number of bytes
|
||||
|
||||
"""
|
||||
|
||||
defstruct path: nil, modes: [], line_or_bytes: :line, raw: true
|
||||
|
||||
@type t :: %__MODULE__{}
|
||||
|
||||
@doc false
|
||||
def __build__(path, modes, line_or_bytes) do
|
||||
raw = :lists.keyfind(:encoding, 1, modes) == false
|
||||
|
||||
modes =
|
||||
case raw do
|
||||
true ->
|
||||
case :lists.keyfind(:read_ahead, 1, modes) do
|
||||
{:read_ahead, false} -> [:raw | :lists.keydelete(:read_ahead, 1, modes)]
|
||||
{:read_ahead, _} -> [:raw | modes]
|
||||
false -> [:raw, :read_ahead | modes]
|
||||
end
|
||||
|
||||
false ->
|
||||
modes
|
||||
end
|
||||
|
||||
%File.Stream{path: path, modes: modes, raw: raw, line_or_bytes: line_or_bytes}
|
||||
end
|
||||
|
||||
defimpl Collectable do
|
||||
def into(%{path: path, modes: modes, raw: raw} = stream) do
|
||||
modes = for mode <- modes, mode not in [:read], do: mode
|
||||
|
||||
case :file.open(path, [:write | modes]) do
|
||||
{:ok, device} ->
|
||||
{:ok, into(device, stream, raw)}
|
||||
|
||||
{:error, reason} ->
|
||||
raise File.Error, reason: reason, action: "stream", path: path
|
||||
end
|
||||
end
|
||||
|
||||
defp into(device, stream, raw) do
|
||||
fn
|
||||
:ok, {:cont, x} ->
|
||||
case raw do
|
||||
true -> IO.binwrite(device, x)
|
||||
false -> IO.write(device, x)
|
||||
end
|
||||
|
||||
:ok, :done ->
|
||||
# If delayed_write option is used and the last write failed will
|
||||
# MatchError here as {:error, _} is returned.
|
||||
:ok = :file.close(device)
|
||||
stream
|
||||
|
||||
:ok, :halt ->
|
||||
# If delayed_write option is used and the last write failed will
|
||||
# MatchError here as {:error, _} is returned.
|
||||
:ok = :file.close(device)
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Enumerable do
|
||||
@read_ahead_size 64 * 1024
|
||||
|
||||
def reduce(%{path: path, modes: modes, line_or_bytes: line_or_bytes, raw: raw}, acc, fun) do
|
||||
start_fun = fn ->
|
||||
case :file.open(path, read_modes(modes)) do
|
||||
{:ok, device} ->
|
||||
if :trim_bom in modes, do: trim_bom(device, raw) |> elem(0), else: device
|
||||
|
||||
{:error, reason} ->
|
||||
raise File.Error, reason: reason, action: "stream", path: path
|
||||
end
|
||||
end
|
||||
|
||||
next_fun =
|
||||
case raw do
|
||||
true -> &IO.each_binstream(&1, line_or_bytes)
|
||||
false -> &IO.each_stream(&1, line_or_bytes)
|
||||
end
|
||||
|
||||
Stream.resource(start_fun, next_fun, &:file.close/1).(acc, fun)
|
||||
end
|
||||
|
||||
def count(%{path: path, modes: modes, line_or_bytes: :line} = stream) do
|
||||
pattern = :binary.compile_pattern("\n")
|
||||
counter = &count_lines(&1, path, pattern, read_function(stream), 0)
|
||||
|
||||
case File.open(path, read_modes(modes), counter) do
|
||||
{:ok, count} ->
|
||||
{:ok, count}
|
||||
|
||||
{:error, reason} ->
|
||||
raise File.Error, reason: reason, action: "stream", path: path
|
||||
end
|
||||
end
|
||||
|
||||
def count(%{path: path, line_or_bytes: bytes, raw: true, modes: modes}) do
|
||||
case File.stat(path) do
|
||||
{:ok, %{size: 0}} ->
|
||||
{:error, __MODULE__}
|
||||
|
||||
{:ok, %{size: size}} ->
|
||||
remainder = if rem(size, bytes) == 0, do: 0, else: 1
|
||||
{:ok, div(size, bytes) + remainder - count_raw_bom(path, modes)}
|
||||
|
||||
{:error, reason} ->
|
||||
raise File.Error, reason: reason, action: "stream", path: path
|
||||
end
|
||||
end
|
||||
|
||||
def count(_stream) do
|
||||
{:error, __MODULE__}
|
||||
end
|
||||
|
||||
def member?(_stream, _term) do
|
||||
{:error, __MODULE__}
|
||||
end
|
||||
|
||||
def slice(_stream) do
|
||||
{:error, __MODULE__}
|
||||
end
|
||||
|
||||
defp count_raw_bom(path, modes) do
|
||||
if :trim_bom in modes do
|
||||
File.open!(path, read_modes(modes), &(&1 |> trim_bom(true) |> elem(1)))
|
||||
else
|
||||
0
|
||||
end
|
||||
end
|
||||
|
||||
defp trim_bom(device, true) do
|
||||
bom_length = device |> IO.binread(4) |> bom_length()
|
||||
{:ok, new_pos} = :file.position(device, bom_length)
|
||||
{device, new_pos}
|
||||
end
|
||||
|
||||
defp trim_bom(device, false) do
|
||||
# Or we read the bom in the correct amount or it isn't there
|
||||
case bom_length(IO.read(device, 1)) do
|
||||
0 ->
|
||||
{:ok, _} = :file.position(device, 0)
|
||||
{device, 0}
|
||||
|
||||
_ ->
|
||||
{device, 1}
|
||||
end
|
||||
end
|
||||
|
||||
defp bom_length(<<239, 187, 191, _rest::binary>>), do: 3
|
||||
defp bom_length(<<254, 255, _rest::binary>>), do: 2
|
||||
defp bom_length(<<255, 254, _rest::binary>>), do: 2
|
||||
defp bom_length(<<0, 0, 254, 255, _rest::binary>>), do: 4
|
||||
defp bom_length(<<254, 255, 0, 0, _rest::binary>>), do: 4
|
||||
defp bom_length(_binary), do: 0
|
||||
|
||||
defp read_modes(modes) do
|
||||
for mode <- modes, mode not in [:write, :append, :trim_bom], do: mode
|
||||
end
|
||||
|
||||
defp count_lines(device, path, pattern, read, count) do
|
||||
case read.(device) do
|
||||
data when is_binary(data) ->
|
||||
count_lines(device, path, pattern, read, count + count_lines(data, pattern))
|
||||
|
||||
:eof ->
|
||||
count
|
||||
|
||||
{:error, reason} ->
|
||||
raise File.Error, reason: reason, action: "stream", path: path
|
||||
end
|
||||
end
|
||||
|
||||
defp count_lines(data, pattern), do: length(:binary.matches(data, pattern))
|
||||
|
||||
defp read_function(%{raw: true}), do: &IO.binread(&1, @read_ahead_size)
|
||||
defp read_function(%{raw: false}), do: &IO.read(&1, @read_ahead_size)
|
||||
end
|
||||
end
|
||||
@@ -1,519 +0,0 @@
|
||||
import Kernel, except: [round: 1]
|
||||
|
||||
defmodule Float do
|
||||
@moduledoc """
|
||||
Functions for working with floating-point numbers.
|
||||
|
||||
## Kernel functions
|
||||
|
||||
There are functions related to floating-point numbers on the `Kernel` module
|
||||
too. Here is a list of them:
|
||||
|
||||
* `Kernel.round/1`: rounds a number to the nearest integer.
|
||||
* `Kernel.trunc/1`: returns the integer part of a number.
|
||||
|
||||
## Known issues
|
||||
|
||||
There are some very well known problems with floating-point numbers
|
||||
and arithmetics due to the fact most decimal fractions cannot be
|
||||
represented by a floating-point binary and most operations are not exact,
|
||||
but operate on approximations. Those issues are not specific
|
||||
to Elixir, they are a property of floating point representation itself.
|
||||
|
||||
For example, the numbers 0.1 and 0.01 are two of them, what means the result
|
||||
of squaring 0.1 does not give 0.01 neither the closest representable. Here is
|
||||
what happens in this case:
|
||||
|
||||
* The closest representable number to 0.1 is 0.1000000014
|
||||
* The closest representable number to 0.01 is 0.0099999997
|
||||
* Doing 0.1 * 0.1 should return 0.01, but because 0.1 is actually 0.1000000014,
|
||||
the result is 0.010000000000000002, and because this is not the closest
|
||||
representable number to 0.01, you'll get the wrong result for this operation
|
||||
|
||||
There are also other known problems like flooring or rounding numbers. See
|
||||
`round/2` and `floor/2` for more details about them.
|
||||
|
||||
To learn more about floating-point arithmetic visit:
|
||||
|
||||
* [0.30000000000000004.com](http://0.30000000000000004.com/)
|
||||
* [What Every Programmer Should Know About Floating-Point Arithmetic](https://floating-point-gui.de/)
|
||||
|
||||
"""
|
||||
|
||||
import Bitwise
|
||||
|
||||
@power_of_2_to_52 4_503_599_627_370_496
|
||||
@precision_range 0..15
|
||||
@type precision_range :: 0..15
|
||||
|
||||
@doc """
|
||||
Parses a binary into a float.
|
||||
|
||||
If successful, returns a tuple in the form of `{float, remainder_of_binary}`;
|
||||
when the binary cannot be coerced into a valid float, the atom `:error` is
|
||||
returned.
|
||||
|
||||
If the size of float exceeds the maximum size of `1.7976931348623157e+308`,
|
||||
the `ArgumentError` exception is raised.
|
||||
|
||||
If you want to convert a string-formatted float directly to a float,
|
||||
`String.to_float/1` can be used instead.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Float.parse("34")
|
||||
{34.0, ""}
|
||||
iex> Float.parse("34.25")
|
||||
{34.25, ""}
|
||||
iex> Float.parse("56.5xyz")
|
||||
{56.5, "xyz"}
|
||||
|
||||
iex> Float.parse("pi")
|
||||
:error
|
||||
|
||||
"""
|
||||
@spec parse(binary) :: {float, binary} | :error
|
||||
def parse("-" <> binary) do
|
||||
case parse_unsigned(binary) do
|
||||
:error -> :error
|
||||
{number, remainder} -> {-number, remainder}
|
||||
end
|
||||
end
|
||||
|
||||
def parse("+" <> binary) do
|
||||
parse_unsigned(binary)
|
||||
end
|
||||
|
||||
def parse(binary) do
|
||||
parse_unsigned(binary)
|
||||
end
|
||||
|
||||
defp parse_unsigned(<<digit, rest::binary>>) when digit in ?0..?9,
|
||||
do: parse_unsigned(rest, false, false, <<digit>>)
|
||||
|
||||
defp parse_unsigned(binary) when is_binary(binary), do: :error
|
||||
|
||||
defp parse_unsigned(<<digit, rest::binary>>, dot?, e?, acc) when digit in ?0..?9,
|
||||
do: parse_unsigned(rest, dot?, e?, <<acc::binary, digit>>)
|
||||
|
||||
defp parse_unsigned(<<?., digit, rest::binary>>, false, false, acc) when digit in ?0..?9,
|
||||
do: parse_unsigned(rest, true, false, <<acc::binary, ?., digit>>)
|
||||
|
||||
defp parse_unsigned(<<exp_marker, digit, rest::binary>>, dot?, false, acc)
|
||||
when exp_marker in 'eE' and digit in ?0..?9,
|
||||
do: parse_unsigned(rest, true, true, <<add_dot(acc, dot?)::binary, ?e, digit>>)
|
||||
|
||||
defp parse_unsigned(<<exp_marker, sign, digit, rest::binary>>, dot?, false, acc)
|
||||
when exp_marker in 'eE' and sign in '-+' and digit in ?0..?9,
|
||||
do: parse_unsigned(rest, true, true, <<add_dot(acc, dot?)::binary, ?e, sign, digit>>)
|
||||
|
||||
defp parse_unsigned(rest, dot?, _e?, acc),
|
||||
do: {:erlang.binary_to_float(add_dot(acc, dot?)), rest}
|
||||
|
||||
defp add_dot(acc, true), do: acc
|
||||
defp add_dot(acc, false), do: acc <> ".0"
|
||||
|
||||
@doc """
|
||||
Rounds a float to the largest number less than or equal to `num`.
|
||||
|
||||
`floor/2` also accepts a precision to round a floating-point value down
|
||||
to an arbitrary number of fractional digits (between 0 and 15).
|
||||
The operation is performed on the binary floating point, without a
|
||||
conversion to decimal.
|
||||
|
||||
This function always returns a float. `Kernel.trunc/1` may be used instead to
|
||||
truncate the result to an integer afterwards.
|
||||
|
||||
## Known issues
|
||||
|
||||
The behaviour of `floor/2` for floats can be surprising. For example:
|
||||
|
||||
iex> Float.floor(12.52, 2)
|
||||
12.51
|
||||
|
||||
One may have expected it to floor to 12.52. This is not a bug.
|
||||
Most decimal fractions cannot be represented as a binary floating point
|
||||
and therefore the number above is internally represented as 12.51999999,
|
||||
which explains the behaviour above.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Float.floor(34.25)
|
||||
34.0
|
||||
iex> Float.floor(-56.5)
|
||||
-57.0
|
||||
iex> Float.floor(34.259, 2)
|
||||
34.25
|
||||
|
||||
"""
|
||||
@spec floor(float, precision_range) :: float
|
||||
def floor(number, precision \\ 0)
|
||||
|
||||
def floor(number, 0) when is_float(number) do
|
||||
:math.floor(number)
|
||||
end
|
||||
|
||||
def floor(number, precision) when is_float(number) and precision in @precision_range do
|
||||
round(number, precision, :floor)
|
||||
end
|
||||
|
||||
def floor(number, precision) when is_float(number) do
|
||||
raise ArgumentError, invalid_precision_message(precision)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Rounds a float to the smallest integer greater than or equal to `num`.
|
||||
|
||||
`ceil/2` also accepts a precision to round a floating-point value down
|
||||
to an arbitrary number of fractional digits (between 0 and 15).
|
||||
|
||||
The operation is performed on the binary floating point, without a
|
||||
conversion to decimal.
|
||||
|
||||
The behaviour of `ceil/2` for floats can be surprising. For example:
|
||||
|
||||
iex> Float.ceil(-12.52, 2)
|
||||
-12.51
|
||||
|
||||
One may have expected it to ceil to -12.52. This is not a bug.
|
||||
Most decimal fractions cannot be represented as a binary floating point
|
||||
and therefore the number above is internally represented as -12.51999999,
|
||||
which explains the behaviour above.
|
||||
|
||||
This function always returns floats. `Kernel.trunc/1` may be used instead to
|
||||
truncate the result to an integer afterwards.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Float.ceil(34.25)
|
||||
35.0
|
||||
iex> Float.ceil(-56.5)
|
||||
-56.0
|
||||
iex> Float.ceil(34.251, 2)
|
||||
34.26
|
||||
|
||||
"""
|
||||
@spec ceil(float, precision_range) :: float
|
||||
def ceil(number, precision \\ 0)
|
||||
|
||||
def ceil(number, 0) when is_float(number) do
|
||||
:math.ceil(number)
|
||||
end
|
||||
|
||||
def ceil(number, precision) when is_float(number) and precision in @precision_range do
|
||||
round(number, precision, :ceil)
|
||||
end
|
||||
|
||||
def ceil(number, precision) when is_float(number) do
|
||||
raise ArgumentError, invalid_precision_message(precision)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Rounds a floating-point value to an arbitrary number of fractional
|
||||
digits (between 0 and 15).
|
||||
|
||||
The rounding direction always ties to half up. The operation is
|
||||
performed on the binary floating point, without a conversion to decimal.
|
||||
|
||||
This function only accepts floats and always returns a float. Use
|
||||
`Kernel.round/1` if you want a function that accepts both floats
|
||||
and integers and always returns an integer.
|
||||
|
||||
## Known issues
|
||||
|
||||
The behaviour of `round/2` for floats can be surprising. For example:
|
||||
|
||||
iex> Float.round(5.5675, 3)
|
||||
5.567
|
||||
|
||||
One may have expected it to round to the half up 5.568. This is not a bug.
|
||||
Most decimal fractions cannot be represented as a binary floating point
|
||||
and therefore the number above is internally represented as 5.567499999,
|
||||
which explains the behaviour above. If you want exact rounding for decimals,
|
||||
you must use a decimal library. The behaviour above is also in accordance
|
||||
to reference implementations, such as "Correctly Rounded Binary-Decimal and
|
||||
Decimal-Binary Conversions" by David M. Gay.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Float.round(12.5)
|
||||
13.0
|
||||
iex> Float.round(5.5674, 3)
|
||||
5.567
|
||||
iex> Float.round(5.5675, 3)
|
||||
5.567
|
||||
iex> Float.round(-5.5674, 3)
|
||||
-5.567
|
||||
iex> Float.round(-5.5675)
|
||||
-6.0
|
||||
iex> Float.round(12.341444444444441, 15)
|
||||
12.341444444444441
|
||||
|
||||
"""
|
||||
@spec round(float, precision_range) :: float
|
||||
# This implementation is slow since it relies on big integers.
|
||||
# Faster implementations are available on more recent papers
|
||||
# and could be implemented in the future.
|
||||
def round(float, precision \\ 0)
|
||||
|
||||
def round(float, 0) when is_float(float) do
|
||||
float |> :erlang.round() |> :erlang.float()
|
||||
end
|
||||
|
||||
def round(float, precision) when is_float(float) and precision in @precision_range do
|
||||
round(float, precision, :half_up)
|
||||
end
|
||||
|
||||
def round(float, precision) when is_float(float) do
|
||||
raise ArgumentError, invalid_precision_message(precision)
|
||||
end
|
||||
|
||||
defp round(0.0, _precision, _rounding), do: 0.0
|
||||
|
||||
defp round(float, precision, rounding) do
|
||||
<<sign::1, exp::11, significant::52-bitstring>> = <<float::float>>
|
||||
{num, count, _} = decompose(significant, 1)
|
||||
count = count - exp + 1023
|
||||
|
||||
cond do
|
||||
# Precision beyond 15 digits
|
||||
count >= 104 ->
|
||||
case rounding do
|
||||
:ceil when sign === 0 -> 1 / power_of_10(precision)
|
||||
:floor when sign === 1 -> -1 / power_of_10(precision)
|
||||
_ -> 0.0
|
||||
end
|
||||
|
||||
# We are asking more precision than we have
|
||||
count <= precision ->
|
||||
float
|
||||
|
||||
true ->
|
||||
# Difference in precision between float and asked precision
|
||||
# We subtract 1 because we need to calculate the remainder too
|
||||
diff = count - precision - 1
|
||||
|
||||
# Get up to latest so we calculate the remainder
|
||||
power_of_10 = power_of_10(diff)
|
||||
|
||||
# Convert the numerand to decimal base
|
||||
num = num * power_of_5(count)
|
||||
|
||||
# Move to the given precision - 1
|
||||
num = div(num, power_of_10)
|
||||
div = div(num, 10)
|
||||
num = rounding(rounding, sign, num, div)
|
||||
|
||||
# Convert back to float without loss
|
||||
# https://www.exploringbinary.com/correct-decimal-to-floating-point-using-big-integers/
|
||||
den = power_of_10(precision)
|
||||
boundary = den <<< 52
|
||||
|
||||
cond do
|
||||
num == 0 ->
|
||||
0.0
|
||||
|
||||
num >= boundary ->
|
||||
{den, exp} = scale_down(num, boundary, 52)
|
||||
decimal_to_float(sign, num, den, exp)
|
||||
|
||||
true ->
|
||||
{num, exp} = scale_up(num, boundary, 52)
|
||||
decimal_to_float(sign, num, den, exp)
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defp scale_up(num, boundary, exp) when num >= boundary, do: {num, exp}
|
||||
defp scale_up(num, boundary, exp), do: scale_up(num <<< 1, boundary, exp - 1)
|
||||
|
||||
defp scale_down(num, den, exp) do
|
||||
new_den = den <<< 1
|
||||
|
||||
if num < new_den do
|
||||
{den >>> 52, exp}
|
||||
else
|
||||
scale_down(num, new_den, exp + 1)
|
||||
end
|
||||
end
|
||||
|
||||
defp decimal_to_float(sign, num, den, exp) do
|
||||
quo = div(num, den)
|
||||
rem = num - quo * den
|
||||
|
||||
tmp =
|
||||
case den >>> 1 do
|
||||
den when rem > den -> quo + 1
|
||||
den when rem < den -> quo
|
||||
_ when (quo &&& 1) === 1 -> quo + 1
|
||||
_ -> quo
|
||||
end
|
||||
|
||||
tmp = tmp - @power_of_2_to_52
|
||||
<<tmp::float>> = <<sign::1, exp + 1023::11, tmp::52>>
|
||||
tmp
|
||||
end
|
||||
|
||||
defp rounding(:floor, 1, _num, div), do: div + 1
|
||||
defp rounding(:ceil, 0, _num, div), do: div + 1
|
||||
|
||||
defp rounding(:half_up, _sign, num, div) do
|
||||
case rem(num, 10) do
|
||||
rem when rem < 5 -> div
|
||||
rem when rem >= 5 -> div + 1
|
||||
end
|
||||
end
|
||||
|
||||
defp rounding(_, _, _, div), do: div
|
||||
|
||||
Enum.reduce(0..104, 1, fn x, acc ->
|
||||
defp power_of_10(unquote(x)), do: unquote(acc)
|
||||
acc * 10
|
||||
end)
|
||||
|
||||
Enum.reduce(0..104, 1, fn x, acc ->
|
||||
defp power_of_5(unquote(x)), do: unquote(acc)
|
||||
acc * 5
|
||||
end)
|
||||
|
||||
@doc """
|
||||
Returns a pair of integers whose ratio is exactly equal
|
||||
to the original float and with a positive denominator.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Float.ratio(0.0)
|
||||
{0, 1}
|
||||
iex> Float.ratio(3.14)
|
||||
{7070651414971679, 2251799813685248}
|
||||
iex> Float.ratio(-3.14)
|
||||
{-7070651414971679, 2251799813685248}
|
||||
iex> Float.ratio(1.5)
|
||||
{3, 2}
|
||||
iex> Float.ratio(-1.5)
|
||||
{-3, 2}
|
||||
iex> Float.ratio(16.0)
|
||||
{16, 1}
|
||||
iex> Float.ratio(-16.0)
|
||||
{-16, 1}
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec ratio(float) :: {integer, pos_integer}
|
||||
def ratio(0.0), do: {0, 1}
|
||||
|
||||
def ratio(float) when is_float(float) do
|
||||
case <<float::float>> do
|
||||
<<sign::1, 0::11, significant::52-bitstring>> ->
|
||||
{num, _, den} = decompose(significant, 0)
|
||||
{sign(sign, num), shift_left(den, 1022)}
|
||||
|
||||
<<sign::1, exp::11, significant::52-bitstring>> ->
|
||||
{num, _, den} = decompose(significant, 1)
|
||||
num = sign(sign, num)
|
||||
|
||||
case exp - 1023 do
|
||||
exp when exp > 0 ->
|
||||
{den, exp} = shift_right(den, exp)
|
||||
{shift_left(num, exp), den}
|
||||
|
||||
exp when exp < 0 ->
|
||||
{num, shift_left(den, -exp)}
|
||||
|
||||
0 ->
|
||||
{num, den}
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defp decompose(significant, initial) do
|
||||
decompose(significant, 1, 0, 2, 1, initial)
|
||||
end
|
||||
|
||||
defp decompose(<<1::1, bits::bitstring>>, count, last_count, power, _last_power, acc) do
|
||||
decompose(bits, count + 1, count, power <<< 1, power, shift_left(acc, count - last_count) + 1)
|
||||
end
|
||||
|
||||
defp decompose(<<0::1, bits::bitstring>>, count, last_count, power, last_power, acc) do
|
||||
decompose(bits, count + 1, last_count, power <<< 1, last_power, acc)
|
||||
end
|
||||
|
||||
defp decompose(<<>>, _count, last_count, _power, last_power, acc) do
|
||||
{acc, last_count, last_power}
|
||||
end
|
||||
|
||||
@compile {:inline, sign: 2, shift_left: 2}
|
||||
defp sign(0, num), do: num
|
||||
defp sign(1, num), do: -num
|
||||
|
||||
defp shift_left(num, times), do: num <<< times
|
||||
|
||||
defp shift_right(num, 0), do: {num, 0}
|
||||
defp shift_right(1, times), do: {1, times}
|
||||
defp shift_right(num, times), do: shift_right(num >>> 1, times - 1)
|
||||
|
||||
@doc """
|
||||
Returns a charlist which corresponds to the text representation
|
||||
of the given float.
|
||||
|
||||
It uses the shortest representation according to algorithm described
|
||||
in "Printing Floating-Point Numbers Quickly and Accurately" in
|
||||
Proceedings of the SIGPLAN '96 Conference on Programming Language
|
||||
Design and Implementation.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Float.to_charlist(7.0)
|
||||
'7.0'
|
||||
|
||||
"""
|
||||
@spec to_charlist(float) :: charlist
|
||||
def to_charlist(float) when is_float(float) do
|
||||
:io_lib_format.fwrite_g(float)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns a binary which corresponds to the text representation
|
||||
of the given float.
|
||||
|
||||
It uses the shortest representation according to algorithm described
|
||||
in "Printing Floating-Point Numbers Quickly and Accurately" in
|
||||
Proceedings of the SIGPLAN '96 Conference on Programming Language
|
||||
Design and Implementation.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Float.to_string(7.0)
|
||||
"7.0"
|
||||
|
||||
"""
|
||||
@spec to_string(float) :: String.t()
|
||||
def to_string(float) when is_float(float) do
|
||||
IO.iodata_to_binary(:io_lib_format.fwrite_g(float))
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated "Use Float.to_charlist/1 instead"
|
||||
def to_char_list(float), do: Float.to_charlist(float)
|
||||
|
||||
@doc false
|
||||
@deprecated "Use :erlang.float_to_list/2 instead"
|
||||
def to_char_list(float, options) do
|
||||
:erlang.float_to_list(float, expand_compact(options))
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated "Use :erlang.float_to_binary/2 instead"
|
||||
def to_string(float, options) do
|
||||
:erlang.float_to_binary(float, expand_compact(options))
|
||||
end
|
||||
|
||||
defp invalid_precision_message(precision) do
|
||||
"precision #{precision} is out of valid range of #{inspect(@precision_range)}"
|
||||
end
|
||||
|
||||
defp expand_compact([{:compact, false} | t]), do: expand_compact(t)
|
||||
defp expand_compact([{:compact, true} | t]), do: [:compact | expand_compact(t)]
|
||||
defp expand_compact([h | t]), do: [h | expand_compact(t)]
|
||||
defp expand_compact([]), do: []
|
||||
end
|
||||
@@ -1,137 +0,0 @@
|
||||
defmodule Function do
|
||||
@moduledoc """
|
||||
A set of functions for working with functions.
|
||||
|
||||
There are two types of captured functions: **external** and **local**.
|
||||
External functions are functions residing in modules that are captured
|
||||
with `&/1`, such as `&String.length/1`. Local functions are anonymous functions
|
||||
defined with `fn/1` or with the capture operator `&/1` using `&1`, `&2`,
|
||||
and so on as replacements.
|
||||
"""
|
||||
|
||||
@type information ::
|
||||
:arity
|
||||
| :env
|
||||
| :index
|
||||
| :module
|
||||
| :name
|
||||
| :new_index
|
||||
| :new_uniq
|
||||
| :pid
|
||||
| :type
|
||||
| :uniq
|
||||
|
||||
@doc """
|
||||
Captures the given function.
|
||||
|
||||
Inlined by the compiler.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Function.capture(String, :length, 1)
|
||||
&String.length/1
|
||||
|
||||
"""
|
||||
@doc since: "1.7.0"
|
||||
@spec capture(module, atom, arity) :: fun
|
||||
def capture(module, function_name, arity) do
|
||||
:erlang.make_fun(module, function_name, arity)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns a keyword list with information about a function.
|
||||
|
||||
The returned keys (with the corresponding possible values) for
|
||||
all types of functions (local and external) are the following:
|
||||
|
||||
* `:type` - `:local` (for anonymous functions) or `:external` (for
|
||||
named functions).
|
||||
|
||||
* `:module` - an atom which is the module where the function is defined when
|
||||
anonymous or the module which the function refers to when it's a named function.
|
||||
|
||||
* `:arity` - (integer) the number of arguments the function is to be called with.
|
||||
|
||||
* `:name` - (atom) the name of the function.
|
||||
|
||||
* `:env` - a list of the environment or free variables. For named
|
||||
functions, the returned list is always empty.
|
||||
|
||||
When `fun` is an anonymous function (that is, the type is `:local`), the following
|
||||
additional keys are returned:
|
||||
|
||||
* `:pid` - PID of the process that originally created the function.
|
||||
|
||||
* `:index` - (integer) an index into the module function table.
|
||||
|
||||
* `:new_index` - (integer) an index into the module function table.
|
||||
|
||||
* `:new_uniq` - (binary) a unique value for this function. It's
|
||||
calculated from the compiled code for the entire module.
|
||||
|
||||
* `:uniq` - (integer) a unique value for this function. This integer is
|
||||
calculated from the compiled code for the entire module.
|
||||
|
||||
**Note**: this function must be used only for debugging purposes.
|
||||
|
||||
Inlined by the compiler.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> fun = fn x -> x end
|
||||
iex> info = Function.info(fun)
|
||||
iex> Keyword.get(info, :arity)
|
||||
1
|
||||
iex> Keyword.get(info, :type)
|
||||
:local
|
||||
|
||||
iex> fun = &String.length/1
|
||||
iex> info = Function.info(fun)
|
||||
iex> Keyword.get(info, :type)
|
||||
:external
|
||||
iex> Keyword.get(info, :name)
|
||||
:length
|
||||
|
||||
"""
|
||||
@doc since: "1.7.0"
|
||||
@spec info(fun) :: [{information, term}]
|
||||
def info(fun), do: :erlang.fun_info(fun)
|
||||
|
||||
@doc """
|
||||
Returns a specific information about the function.
|
||||
|
||||
The returned information is a two-element tuple in the shape of
|
||||
`{info, value}`.
|
||||
|
||||
For any function, the information asked for can be any of the atoms
|
||||
`:module`, `:name`, `:arity`, `:env`, or `:type`.
|
||||
|
||||
For anonymous functions, there is also information about any of the
|
||||
atoms `:index`, `:new_index`, `:new_uniq`, `:uniq`, and `:pid`.
|
||||
For a named function, the value of any of these items is always the
|
||||
atom `:undefined`.
|
||||
|
||||
For more information on each of the possible returned values, see
|
||||
`info/1`.
|
||||
|
||||
Inlined by the compiler.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> f = fn x -> x end
|
||||
iex> Function.info(f, :arity)
|
||||
{:arity, 1}
|
||||
iex> Function.info(f, :type)
|
||||
{:type, :local}
|
||||
|
||||
iex> fun = &String.length/1
|
||||
iex> Function.info(fun, :name)
|
||||
{:name, :length}
|
||||
iex> Function.info(fun, :pid)
|
||||
{:pid, :undefined}
|
||||
|
||||
"""
|
||||
@doc since: "1.7.0"
|
||||
@spec info(fun, item) :: {item, term} when item: information
|
||||
def info(fun, item), do: :erlang.fun_info(fun, item)
|
||||
end
|
||||
@@ -1,903 +0,0 @@
|
||||
defmodule GenEvent do
|
||||
# Functions from this module are deprecated in elixir_dispatch.
|
||||
|
||||
@moduledoc """
|
||||
A event manager with event handlers behaviour.
|
||||
|
||||
If you are interested in implementing an event manager, please read the
|
||||
"Alternatives" section below. If you have to implement an event handler to
|
||||
integrate with an existing system, such as Elixir's Logger, please use
|
||||
`:gen_event` instead.
|
||||
|
||||
## Alternatives
|
||||
|
||||
There are a few suitable alternatives to replace GenEvent. Each of them can be
|
||||
the most beneficial based on the use case.
|
||||
|
||||
### Supervisor and GenServers
|
||||
|
||||
One alternative to GenEvent is a very minimal solution consisting of using a
|
||||
supervisor and multiple GenServers started under it. The supervisor acts as
|
||||
the "event manager" and the children GenServers act as the "event handlers".
|
||||
This approach has some shortcomings (it provides no backpressure for example)
|
||||
but can still replace GenEvent for low-profile usages of it. [This blog post
|
||||
by José
|
||||
Valim](http://blog.plataformatec.com.br/2016/11/replacing-genevent-by-a-supervisor-genserver/)
|
||||
has more detailed information on this approach.
|
||||
|
||||
### GenStage
|
||||
|
||||
If the use case where you were using GenEvent requires more complex logic,
|
||||
[GenStage](https://github.com/elixir-lang/gen_stage) provides a great
|
||||
alternative. GenStage is an external Elixir library maintained by the Elixir
|
||||
team; it provides a tool to implement systems that exchange events in a
|
||||
demand-driven way with built-in support for backpressure. See the [GenStage
|
||||
documentation](https://hexdocs.pm/gen_stage) for more information.
|
||||
|
||||
### `:gen_event`
|
||||
|
||||
If your use case requires exactly what GenEvent provided, or you have to
|
||||
integrate with an existing `:gen_event`-based system, you can still use the
|
||||
[`:gen_event`](http://erlang.org/doc/man/gen_event.html) Erlang module.
|
||||
"""
|
||||
|
||||
@moduledoc deprecated: "Use Erlang/OTP's :gen_event module instead"
|
||||
|
||||
@callback init(args :: term) ::
|
||||
{:ok, state}
|
||||
| {:ok, state, :hibernate}
|
||||
| {:error, reason :: any}
|
||||
when state: any
|
||||
|
||||
@callback handle_event(event :: term, state :: term) ::
|
||||
{:ok, new_state}
|
||||
| {:ok, new_state, :hibernate}
|
||||
| :remove_handler
|
||||
when new_state: term
|
||||
|
||||
@callback handle_call(request :: term, state :: term) ::
|
||||
{:ok, reply, new_state}
|
||||
| {:ok, reply, new_state, :hibernate}
|
||||
| {:remove_handler, reply}
|
||||
when reply: term, new_state: term
|
||||
|
||||
@callback handle_info(msg :: term, state :: term) ::
|
||||
{:ok, new_state}
|
||||
| {:ok, new_state, :hibernate}
|
||||
| :remove_handler
|
||||
when new_state: term
|
||||
|
||||
@callback terminate(reason, state :: term) :: term
|
||||
when reason: :stop | {:stop, term} | :remove_handler | {:error, term} | term
|
||||
|
||||
@callback code_change(old_vsn, state :: term, extra :: term) :: {:ok, new_state :: term}
|
||||
when old_vsn: term | {:down, term}
|
||||
|
||||
@type on_start :: {:ok, pid} | {:error, {:already_started, pid}}
|
||||
|
||||
@type name :: atom | {:global, term} | {:via, module, term}
|
||||
|
||||
@type options :: [name: name]
|
||||
|
||||
@type manager :: pid | name | {atom, node}
|
||||
|
||||
@type handler :: atom | {atom, term}
|
||||
|
||||
message = "Use one of the alternatives described in the documentation for the GenEvent module"
|
||||
|
||||
@deprecated message
|
||||
@doc false
|
||||
defmacro __using__(_) do
|
||||
deprecation_message =
|
||||
"the GenEvent module is deprecated, see its documentation for alternatives"
|
||||
|
||||
IO.warn(deprecation_message, Macro.Env.stacktrace(__CALLER__))
|
||||
|
||||
quote location: :keep do
|
||||
@behaviour :gen_event
|
||||
|
||||
@doc false
|
||||
def init(args) do
|
||||
{:ok, args}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_event(_event, state) do
|
||||
{:ok, state}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_call(msg, state) do
|
||||
proc =
|
||||
case Process.info(self(), :registered_name) do
|
||||
{_, []} -> self()
|
||||
{_, name} -> name
|
||||
end
|
||||
|
||||
# We do this to trick Dialyzer to not complain about non-local returns.
|
||||
case :erlang.phash2(1, 1) do
|
||||
0 ->
|
||||
raise "attempted to call GenEvent #{inspect(proc)} but no handle_call/2 clause was provided"
|
||||
|
||||
1 ->
|
||||
{:remove_handler, {:bad_call, msg}}
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_info(_msg, state) do
|
||||
{:ok, state}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def terminate(_reason, _state) do
|
||||
:ok
|
||||
end
|
||||
|
||||
@doc false
|
||||
def code_change(_old, state, _extra) do
|
||||
{:ok, state}
|
||||
end
|
||||
|
||||
defoverridable init: 1,
|
||||
handle_event: 2,
|
||||
handle_call: 2,
|
||||
handle_info: 2,
|
||||
terminate: 2,
|
||||
code_change: 3
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec start_link(options) :: on_start
|
||||
def start_link(options \\ []) when is_list(options) do
|
||||
do_start(:link, options)
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec start(options) :: on_start
|
||||
def start(options \\ []) when is_list(options) do
|
||||
do_start(:nolink, options)
|
||||
end
|
||||
|
||||
@no_callback :"no callback module"
|
||||
|
||||
defp do_start(mode, options) do
|
||||
case Keyword.get(options, :name) do
|
||||
nil ->
|
||||
:gen.start(GenEvent, mode, @no_callback, [], [])
|
||||
|
||||
atom when is_atom(atom) ->
|
||||
:gen.start(GenEvent, mode, {:local, atom}, @no_callback, [], [])
|
||||
|
||||
{:global, _term} = tuple ->
|
||||
:gen.start(GenEvent, mode, tuple, @no_callback, [], [])
|
||||
|
||||
{:via, via_module, _term} = tuple when is_atom(via_module) ->
|
||||
:gen.start(GenEvent, mode, tuple, @no_callback, [], [])
|
||||
|
||||
other ->
|
||||
raise ArgumentError, """
|
||||
expected :name option to be one of the following:
|
||||
|
||||
* nil
|
||||
* atom
|
||||
* {:global, term}
|
||||
* {:via, module, term}
|
||||
|
||||
Got: #{inspect(other)}
|
||||
"""
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec stream(manager, keyword) :: GenEvent.Stream.t()
|
||||
def stream(manager, options \\ []) do
|
||||
%GenEvent.Stream{manager: manager, timeout: Keyword.get(options, :timeout, :infinity)}
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec add_handler(manager, handler, term) :: :ok | {:error, term}
|
||||
def add_handler(manager, handler, args) do
|
||||
rpc(manager, {:add_handler, handler, args})
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec add_mon_handler(manager, handler, term) :: :ok | {:error, term}
|
||||
def add_mon_handler(manager, handler, args) do
|
||||
rpc(manager, {:add_mon_handler, handler, args, self()})
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec notify(manager, term) :: :ok
|
||||
def notify(manager, event)
|
||||
|
||||
def notify({:global, name}, msg) do
|
||||
try do
|
||||
:global.send(name, {:notify, msg})
|
||||
:ok
|
||||
catch
|
||||
_, _ -> :ok
|
||||
end
|
||||
end
|
||||
|
||||
def notify({:via, mod, name}, msg) when is_atom(mod) do
|
||||
try do
|
||||
mod.send(name, {:notify, msg})
|
||||
:ok
|
||||
catch
|
||||
_, _ -> :ok
|
||||
end
|
||||
end
|
||||
|
||||
def notify(manager, msg)
|
||||
when is_pid(manager)
|
||||
when is_atom(manager)
|
||||
when tuple_size(manager) == 2 and is_atom(elem(manager, 0)) and is_atom(elem(manager, 1)) do
|
||||
send(manager, {:notify, msg})
|
||||
:ok
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec sync_notify(manager, term) :: :ok
|
||||
def sync_notify(manager, event) do
|
||||
rpc(manager, {:sync_notify, event})
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec ack_notify(manager, term) :: :ok
|
||||
def ack_notify(manager, event) do
|
||||
rpc(manager, {:ack_notify, event})
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec call(manager, handler, term, timeout) :: term | {:error, term}
|
||||
def call(manager, handler, request, timeout \\ 5000) do
|
||||
try do
|
||||
:gen.call(manager, self(), {:call, handler, request}, timeout)
|
||||
catch
|
||||
:exit, reason ->
|
||||
exit({reason, {__MODULE__, :call, [manager, handler, request, timeout]}})
|
||||
else
|
||||
{:ok, res} -> res
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec remove_handler(manager, handler, term) :: term | {:error, term}
|
||||
def remove_handler(manager, handler, args) do
|
||||
rpc(manager, {:delete_handler, handler, args})
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec swap_handler(manager, handler, term, handler, term) :: :ok | {:error, term}
|
||||
def swap_handler(manager, handler1, args1, handler2, args2) do
|
||||
rpc(manager, {:swap_handler, handler1, args1, handler2, args2})
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec swap_mon_handler(manager, handler, term, handler, term) :: :ok | {:error, term}
|
||||
def swap_mon_handler(manager, handler1, args1, handler2, args2) do
|
||||
rpc(manager, {:swap_mon_handler, handler1, args1, handler2, args2, self()})
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec which_handlers(manager) :: [handler]
|
||||
def which_handlers(manager) do
|
||||
rpc(manager, :which_handlers)
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
@spec stop(manager, reason :: term, timeout) :: :ok
|
||||
def stop(manager, reason \\ :normal, timeout \\ :infinity) do
|
||||
:gen.stop(manager, reason, timeout)
|
||||
end
|
||||
|
||||
defp rpc(module, cmd) do
|
||||
{:ok, reply} = :gen.call(module, self(), cmd, :infinity)
|
||||
reply
|
||||
end
|
||||
|
||||
## Init callbacks
|
||||
|
||||
require Record
|
||||
Record.defrecordp(:handler, [:module, :id, :state, :pid, :ref])
|
||||
|
||||
@doc false
|
||||
def init_it(starter, :self, name, mod, args, options) do
|
||||
init_it(starter, self(), name, mod, args, options)
|
||||
end
|
||||
|
||||
def init_it(starter, parent, name, _mod, _args, options) do
|
||||
Process.put(:"$initial_call", {__MODULE__, :init_it, 6})
|
||||
debug = :gen.debug_options(name, options)
|
||||
:proc_lib.init_ack(starter, {:ok, self()})
|
||||
loop(parent, name(name), [], debug, false)
|
||||
end
|
||||
|
||||
@doc false
|
||||
def init_hib(parent, name, handlers, debug) do
|
||||
fetch_msg(parent, name, handlers, debug, true)
|
||||
end
|
||||
|
||||
defp name({:local, name}), do: name
|
||||
defp name({:global, name}), do: name
|
||||
defp name({:via, _, name}), do: name
|
||||
defp name(pid) when is_pid(pid), do: pid
|
||||
|
||||
## Loop
|
||||
|
||||
defp loop(parent, name, handlers, debug, true) do
|
||||
:proc_lib.hibernate(__MODULE__, :init_hib, [parent, name, handlers, debug])
|
||||
end
|
||||
|
||||
defp loop(parent, name, handlers, debug, false) do
|
||||
fetch_msg(parent, name, handlers, debug, false)
|
||||
end
|
||||
|
||||
defp fetch_msg(parent, name, handlers, debug, hib) do
|
||||
receive do
|
||||
{:system, from, req} ->
|
||||
:sys.handle_system_msg(req, from, parent, __MODULE__, debug, [name, handlers, hib], hib)
|
||||
|
||||
{:EXIT, ^parent, reason} ->
|
||||
server_terminate(reason, parent, handlers, name)
|
||||
|
||||
msg when debug == [] ->
|
||||
handle_msg(msg, parent, name, handlers, [])
|
||||
|
||||
msg ->
|
||||
debug = :sys.handle_debug(debug, &print_event/3, name, {:in, msg})
|
||||
handle_msg(msg, parent, name, handlers, debug)
|
||||
end
|
||||
end
|
||||
|
||||
defp handle_msg(msg, parent, name, handlers, debug) do
|
||||
case msg do
|
||||
{:notify, event} ->
|
||||
{hib, handlers} = server_event(:async, event, handlers, name)
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
|
||||
{_from, _tag, {:notify, event}} ->
|
||||
{hib, handlers} = server_event(:async, event, handlers, name)
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
|
||||
{_from, tag, {:ack_notify, event}} ->
|
||||
reply(tag, :ok)
|
||||
{hib, handlers} = server_event(:ack, event, handlers, name)
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
|
||||
{_from, tag, {:sync_notify, event}} ->
|
||||
{hib, handlers} = server_event(:sync, event, handlers, name)
|
||||
reply(tag, :ok)
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
|
||||
{:DOWN, ref, :process, _pid, reason} = other ->
|
||||
case handle_down(ref, reason, handlers, name) do
|
||||
{:ok, handlers} ->
|
||||
loop(parent, name, handlers, debug, false)
|
||||
|
||||
:error ->
|
||||
{hib, handlers} = server_info(other, handlers, name)
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
end
|
||||
|
||||
{_from, tag, {:call, handler, query}} ->
|
||||
{hib, reply, handlers} = server_call(handler, query, handlers, name)
|
||||
reply(tag, reply)
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
|
||||
{_from, tag, {:add_handler, handler, args}} ->
|
||||
{hib, reply, handlers} = server_add_handler(handler, args, handlers)
|
||||
reply(tag, reply)
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
|
||||
{_from, tag, {:add_mon_handler, handler, args, notify}} ->
|
||||
{hib, reply, handlers} = server_add_mon_handler(handler, args, handlers, notify)
|
||||
reply(tag, reply)
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
|
||||
{_from, tag, {:add_process_handler, pid, notify}} ->
|
||||
{hib, reply, handlers} = server_add_process_handler(pid, handlers, notify)
|
||||
reply(tag, reply)
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
|
||||
{_from, tag, {:delete_handler, handler, args}} ->
|
||||
{reply, handlers} = server_remove_handler(handler, args, handlers, name)
|
||||
reply(tag, reply)
|
||||
loop(parent, name, handlers, debug, false)
|
||||
|
||||
{_from, tag, {:swap_handler, handler1, args1, handler2, args2}} ->
|
||||
{hib, reply, handlers} =
|
||||
server_swap_handler(handler1, args1, handler2, args2, handlers, nil, name)
|
||||
|
||||
reply(tag, reply)
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
|
||||
{_from, tag, {:swap_mon_handler, handler1, args1, handler2, args2, mon}} ->
|
||||
{hib, reply, handlers} =
|
||||
server_swap_handler(handler1, args1, handler2, args2, handlers, mon, name)
|
||||
|
||||
reply(tag, reply)
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
|
||||
{_from, tag, :which_handlers} ->
|
||||
reply(tag, server_which_handlers(handlers))
|
||||
loop(parent, name, handlers, debug, false)
|
||||
|
||||
{_from, tag, :get_modules} ->
|
||||
reply(tag, server_get_modules(handlers))
|
||||
loop(parent, name, handlers, debug, false)
|
||||
|
||||
other ->
|
||||
{hib, handlers} = server_info(other, handlers, name)
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
end
|
||||
end
|
||||
|
||||
## System callbacks
|
||||
|
||||
@doc false
|
||||
def system_continue(parent, debug, [name, handlers, hib]) do
|
||||
loop(parent, name, handlers, debug, hib)
|
||||
end
|
||||
|
||||
@doc false
|
||||
def system_terminate(reason, parent, _debug, [name, handlers, _hib]) do
|
||||
server_terminate(reason, parent, handlers, name)
|
||||
end
|
||||
|
||||
@doc false
|
||||
def system_code_change([name, handlers, hib], module, old_vsn, extra) do
|
||||
handlers =
|
||||
for handler <- handlers do
|
||||
if handler(handler, :module) == module do
|
||||
{:ok, state} = module.code_change(old_vsn, handler(handler, :state), extra)
|
||||
handler(handler, state: state)
|
||||
else
|
||||
handler
|
||||
end
|
||||
end
|
||||
|
||||
{:ok, [name, handlers, hib]}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def system_get_state([_name, handlers, _hib]) do
|
||||
tuples =
|
||||
for handler(module: mod, id: id, state: state) <- handlers do
|
||||
{mod, id, state}
|
||||
end
|
||||
|
||||
{:ok, tuples}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def system_replace_state(fun, [name, handlers, hib]) do
|
||||
{handlers, states} =
|
||||
:lists.unzip(
|
||||
for handler <- handlers do
|
||||
handler(module: mod, id: id, state: state) = handler
|
||||
cur = {mod, id, state}
|
||||
|
||||
try do
|
||||
new = {^mod, ^id, new_state} = fun.(cur)
|
||||
{handler(handler, state: new_state), new}
|
||||
catch
|
||||
_, _ ->
|
||||
{handler, cur}
|
||||
end
|
||||
end
|
||||
)
|
||||
|
||||
{:ok, states, [name, handlers, hib]}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def format_status(opt, status_data) do
|
||||
[pdict, sys_state, parent, _debug, [name, handlers, _hib]] = status_data
|
||||
header = :gen.format_status_header('Status for event handler', name)
|
||||
|
||||
formatted =
|
||||
for handler <- handlers do
|
||||
handler(module: module, state: state) = handler
|
||||
|
||||
if function_exported?(module, :format_status, 2) do
|
||||
try do
|
||||
state = module.format_status(opt, [pdict, state])
|
||||
handler(handler, state: state)
|
||||
catch
|
||||
_, _ -> handler
|
||||
end
|
||||
else
|
||||
handler
|
||||
end
|
||||
end
|
||||
|
||||
[
|
||||
header: header,
|
||||
data: [{'Status', sys_state}, {'Parent', parent}],
|
||||
items: {'Installed handlers', formatted}
|
||||
]
|
||||
end
|
||||
|
||||
## Loop helpers
|
||||
|
||||
defp print_event(dev, {:in, msg}, name) do
|
||||
case msg do
|
||||
{:notify, event} ->
|
||||
IO.puts(dev, "*DBG* #{inspect(name)} got event #{inspect(event)}")
|
||||
|
||||
{_, _, {:call, handler, query}} ->
|
||||
IO.puts(
|
||||
dev,
|
||||
"*DBG* #{inspect(name)} (handler #{inspect(handler)}) got call #{inspect(query)}"
|
||||
)
|
||||
|
||||
_ ->
|
||||
IO.puts(dev, "*DBG* #{inspect(name)} got #{inspect(msg)}")
|
||||
end
|
||||
end
|
||||
|
||||
defp print_event(dev, dbg, name) do
|
||||
IO.puts(dev, "*DBG* #{inspect(name)}: #{inspect(dbg)}")
|
||||
end
|
||||
|
||||
defp server_add_handler({module, id}, args, handlers) do
|
||||
handler = handler(module: module, id: {module, id})
|
||||
do_add_handler(module, handler, args, handlers, :ok)
|
||||
end
|
||||
|
||||
defp server_add_handler(module, args, handlers) do
|
||||
handler = handler(module: module, id: module)
|
||||
do_add_handler(module, handler, args, handlers, :ok)
|
||||
end
|
||||
|
||||
defp server_add_mon_handler({module, id}, args, handlers, notify) do
|
||||
ref = Process.monitor(notify)
|
||||
handler = handler(module: module, id: {module, id}, pid: notify, ref: ref)
|
||||
do_add_handler(module, handler, args, handlers, :ok)
|
||||
end
|
||||
|
||||
defp server_add_mon_handler(module, args, handlers, notify) do
|
||||
ref = Process.monitor(notify)
|
||||
handler = handler(module: module, id: module, pid: notify, ref: ref)
|
||||
do_add_handler(module, handler, args, handlers, :ok)
|
||||
end
|
||||
|
||||
defp server_add_process_handler(pid, handlers, notify) do
|
||||
ref = Process.monitor(pid)
|
||||
handler = handler(module: GenEvent.Stream, id: {self(), ref}, pid: notify, ref: ref)
|
||||
do_add_handler(GenEvent.Stream, handler, {pid, ref}, handlers, {self(), ref})
|
||||
end
|
||||
|
||||
defp server_remove_handler(module, args, handlers, name) do
|
||||
do_take_handler(module, args, handlers, name, :remove, :normal)
|
||||
end
|
||||
|
||||
defp server_swap_handler(module1, args1, module2, args2, handlers, sup, name) do
|
||||
{state, handlers} =
|
||||
do_take_handler(module1, args1, handlers, name, :swapped, {:swapped, module2, sup})
|
||||
|
||||
if sup do
|
||||
server_add_mon_handler(module2, {args2, state}, handlers, sup)
|
||||
else
|
||||
server_add_handler(module2, {args2, state}, handlers)
|
||||
end
|
||||
end
|
||||
|
||||
defp server_info(event, handlers, name) do
|
||||
handlers = :lists.reverse(handlers)
|
||||
server_notify(event, :handle_info, handlers, name, handlers, [], false)
|
||||
end
|
||||
|
||||
defp server_event(mode, event, handlers, name) do
|
||||
{handlers, streams} = server_split_process_handlers(mode, event, handlers, [], [])
|
||||
{hib, handlers} = server_notify(event, :handle_event, handlers, name, handlers, [], false)
|
||||
{hib, server_collect_process_handlers(mode, event, streams, handlers, name)}
|
||||
end
|
||||
|
||||
defp server_split_process_handlers(mode, event, [handler | t], handlers, streams) do
|
||||
case handler(handler, :id) do
|
||||
{pid, _ref} when is_pid(pid) ->
|
||||
server_process_notify(mode, event, handler)
|
||||
server_split_process_handlers(mode, event, t, handlers, [handler | streams])
|
||||
|
||||
_ ->
|
||||
server_split_process_handlers(mode, event, t, [handler | handlers], streams)
|
||||
end
|
||||
end
|
||||
|
||||
defp server_split_process_handlers(_mode, _event, [], handlers, streams) do
|
||||
{handlers, streams}
|
||||
end
|
||||
|
||||
defp server_process_notify(mode, event, handler(state: {pid, ref})) do
|
||||
send(pid, {self(), {self(), ref}, {mode_to_tag(mode), event}})
|
||||
end
|
||||
|
||||
defp mode_to_tag(:ack), do: :ack_notify
|
||||
defp mode_to_tag(:sync), do: :sync_notify
|
||||
defp mode_to_tag(:async), do: :notify
|
||||
|
||||
defp server_notify(event, fun, [handler | t], name, handlers, acc, hib) do
|
||||
case server_update(handler, fun, event, name, handlers) do
|
||||
{new_hib, handler} ->
|
||||
server_notify(event, fun, t, name, handlers, [handler | acc], hib or new_hib)
|
||||
|
||||
:error ->
|
||||
server_notify(event, fun, t, name, handlers, acc, hib)
|
||||
end
|
||||
end
|
||||
|
||||
defp server_notify(_, _, [], _, _, acc, hib) do
|
||||
{hib, acc}
|
||||
end
|
||||
|
||||
defp server_update(handler, fun, event, name, _handlers) do
|
||||
handler(module: module, state: state) = handler
|
||||
|
||||
case do_handler(module, fun, [event, state]) do
|
||||
{:ok, res} ->
|
||||
case res do
|
||||
{:ok, state} ->
|
||||
{false, handler(handler, state: state)}
|
||||
|
||||
{:ok, state, :hibernate} ->
|
||||
{true, handler(handler, state: state)}
|
||||
|
||||
:remove_handler ->
|
||||
do_terminate(handler, :remove_handler, event, name, :normal)
|
||||
:error
|
||||
|
||||
other ->
|
||||
reason = {:bad_return_value, other}
|
||||
do_terminate(handler, {:error, reason}, event, name, reason)
|
||||
:error
|
||||
end
|
||||
|
||||
{:error, reason} ->
|
||||
do_terminate(handler, {:error, reason}, event, name, reason)
|
||||
:error
|
||||
end
|
||||
end
|
||||
|
||||
defp server_collect_process_handlers(:async, event, [handler | t], handlers, name) do
|
||||
server_collect_process_handlers(:async, event, t, [handler | handlers], name)
|
||||
end
|
||||
|
||||
defp server_collect_process_handlers(mode, event, [handler | t], handlers, name)
|
||||
when mode in [:sync, :ack] do
|
||||
handler(ref: ref, id: id) = handler
|
||||
|
||||
receive do
|
||||
{^ref, :ok} ->
|
||||
server_collect_process_handlers(mode, event, t, [handler | handlers], name)
|
||||
|
||||
{_from, tag, {:delete_handler, ^id, args}} ->
|
||||
do_terminate(handler, args, :remove, name, :normal)
|
||||
reply(tag, :ok)
|
||||
server_collect_process_handlers(mode, event, t, handlers, name)
|
||||
|
||||
{:DOWN, ^ref, _, _, reason} ->
|
||||
do_terminate(handler, {:stop, reason}, :DOWN, name, :shutdown)
|
||||
server_collect_process_handlers(mode, event, t, handlers, name)
|
||||
end
|
||||
end
|
||||
|
||||
defp server_collect_process_handlers(_mode, _event, [], handlers, _name) do
|
||||
handlers
|
||||
end
|
||||
|
||||
defp server_call(module, query, handlers, name) do
|
||||
case :lists.keyfind(module, handler(:id) + 1, handlers) do
|
||||
false ->
|
||||
{false, {:error, :not_found}, handlers}
|
||||
|
||||
handler ->
|
||||
case server_call_update(handler, query, name, handlers) do
|
||||
{{hib, handler}, reply} ->
|
||||
{hib, reply, :lists.keyreplace(module, handler(:id) + 1, handlers, handler)}
|
||||
|
||||
{:error, reply} ->
|
||||
{false, reply, :lists.keydelete(module, handler(:id) + 1, handlers)}
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defp server_call_update(handler, query, name, _handlers) do
|
||||
handler(module: module, state: state) = handler
|
||||
|
||||
case do_handler(module, :handle_call, [query, state]) do
|
||||
{:ok, res} ->
|
||||
case res do
|
||||
{:ok, reply, state} ->
|
||||
{{false, handler(handler, state: state)}, reply}
|
||||
|
||||
{:ok, reply, state, :hibernate} ->
|
||||
{{true, handler(handler, state: state)}, reply}
|
||||
|
||||
{:remove_handler, reply} ->
|
||||
do_terminate(handler, :remove_handler, query, name, :normal)
|
||||
{:error, reply}
|
||||
|
||||
other ->
|
||||
reason = {:bad_return_value, other}
|
||||
do_terminate(handler, {:error, reason}, query, name, reason)
|
||||
{:error, {:error, reason}}
|
||||
end
|
||||
|
||||
{:error, reason} ->
|
||||
do_terminate(handler, {:error, reason}, query, name, reason)
|
||||
{:error, {:error, reason}}
|
||||
end
|
||||
end
|
||||
|
||||
defp server_get_modules(handlers) do
|
||||
for(handler(module: module) <- handlers, do: module)
|
||||
|> :ordsets.from_list()
|
||||
|> :ordsets.to_list()
|
||||
end
|
||||
|
||||
defp server_which_handlers(handlers) do
|
||||
for handler(id: id) <- handlers, do: id
|
||||
end
|
||||
|
||||
defp server_terminate(reason, _parent, handlers, name) do
|
||||
_ =
|
||||
for handler <- handlers do
|
||||
do_terminate(handler, :stop, :stop, name, :shutdown)
|
||||
end
|
||||
|
||||
exit(reason)
|
||||
end
|
||||
|
||||
defp reply({from, ref}, msg) do
|
||||
send(from, {ref, msg})
|
||||
end
|
||||
|
||||
defp handle_down(ref, reason, handlers, name) do
|
||||
case :lists.keyfind(ref, handler(:ref) + 1, handlers) do
|
||||
false ->
|
||||
:error
|
||||
|
||||
handler ->
|
||||
do_terminate(handler, {:stop, reason}, :DOWN, name, :shutdown)
|
||||
{:ok, :lists.keydelete(ref, handler(:ref) + 1, handlers)}
|
||||
end
|
||||
end
|
||||
|
||||
defp do_add_handler(module, handler, arg, handlers, succ) do
|
||||
case :lists.keyfind(handler(handler, :id), handler(:id) + 1, handlers) do
|
||||
false ->
|
||||
case do_handler(module, :init, [arg]) do
|
||||
{:ok, res} ->
|
||||
case res do
|
||||
{:ok, state} ->
|
||||
{false, succ, [handler(handler, state: state) | handlers]}
|
||||
|
||||
{:ok, state, :hibernate} ->
|
||||
{true, succ, [handler(handler, state: state) | handlers]}
|
||||
|
||||
{:error, _} = error ->
|
||||
{false, error, handlers}
|
||||
|
||||
other ->
|
||||
{false, {:error, {:bad_return_value, other}}, handlers}
|
||||
end
|
||||
|
||||
{:error, _} = error ->
|
||||
{false, error, handlers}
|
||||
end
|
||||
|
||||
_ ->
|
||||
{false, {:error, :already_present}, handlers}
|
||||
end
|
||||
end
|
||||
|
||||
defp do_take_handler(module, args, handlers, name, last_in, reason) do
|
||||
case :lists.keytake(module, handler(:id) + 1, handlers) do
|
||||
{:value, handler, handlers} ->
|
||||
{do_terminate(handler, args, last_in, name, reason), handlers}
|
||||
|
||||
false ->
|
||||
{{:error, :not_found}, handlers}
|
||||
end
|
||||
end
|
||||
|
||||
defp do_terminate(handler, arg, last_in, name, reason) do
|
||||
handler(module: module, state: state) = handler
|
||||
|
||||
res =
|
||||
case do_handler(module, :terminate, [arg, state]) do
|
||||
{:ok, res} -> res
|
||||
{:error, _} = error -> error
|
||||
end
|
||||
|
||||
report_terminate(handler, reason, state, last_in, name)
|
||||
res
|
||||
end
|
||||
|
||||
defp do_handler(mod, fun, args) do
|
||||
try do
|
||||
apply(mod, fun, args)
|
||||
catch
|
||||
:throw, val -> {:ok, val}
|
||||
:error, val -> {:error, {val, __STACKTRACE__}}
|
||||
:exit, val -> {:error, val}
|
||||
else
|
||||
res -> {:ok, res}
|
||||
end
|
||||
end
|
||||
|
||||
defp report_terminate(handler, reason, state, last_in, name) do
|
||||
report_error(handler, reason, state, last_in, name)
|
||||
|
||||
if ref = handler(handler, :ref) do
|
||||
Process.demonitor(ref, [:flush])
|
||||
end
|
||||
|
||||
if pid = handler(handler, :pid) do
|
||||
send(pid, {:gen_event_EXIT, handler(handler, :id), reason})
|
||||
end
|
||||
end
|
||||
|
||||
defp report_error(_handler, :normal, _, _, _), do: :ok
|
||||
defp report_error(_handler, :shutdown, _, _, _), do: :ok
|
||||
defp report_error(_handler, {:swapped, _, _}, _, _, _), do: :ok
|
||||
|
||||
defp report_error(handler, reason, state, last_in, name) do
|
||||
reason =
|
||||
case reason do
|
||||
{:undef, [{m, f, a, _} | _] = mfas} ->
|
||||
cond do
|
||||
:code.is_loaded(m) == false ->
|
||||
{:"module could not be loaded", mfas}
|
||||
|
||||
function_exported?(m, f, length(a)) ->
|
||||
reason
|
||||
|
||||
true ->
|
||||
{:"function not exported", mfas}
|
||||
end
|
||||
|
||||
_ ->
|
||||
reason
|
||||
end
|
||||
|
||||
formatted = report_status(handler, state)
|
||||
|
||||
:error_logger.error_msg(
|
||||
'** gen_event handler ~p crashed.~n' ++
|
||||
'** Was installed in ~p~n' ++
|
||||
'** Last event was: ~p~n' ++ '** When handler state == ~p~n' ++ '** Reason == ~p~n',
|
||||
[handler(handler, :id), name, last_in, formatted, reason]
|
||||
)
|
||||
end
|
||||
|
||||
defp report_status(handler(module: module), state) do
|
||||
if function_exported?(module, :format_status, 2) do
|
||||
try do
|
||||
module.format_status(:terminate, [Process.get(), state])
|
||||
catch
|
||||
_, _ -> state
|
||||
end
|
||||
else
|
||||
state
|
||||
end
|
||||
end
|
||||
end
|
||||
@@ -1,171 +0,0 @@
|
||||
defmodule GenEvent.Stream do
|
||||
@moduledoc false
|
||||
defstruct manager: nil, timeout: :infinity
|
||||
|
||||
@type t :: %__MODULE__{manager: GenEvent.manager(), timeout: timeout}
|
||||
|
||||
@doc false
|
||||
def init({_pid, _ref} = state) do
|
||||
{:ok, state}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_event(event, _state) do
|
||||
# We do this to trick Dialyzer to not complain about non-local returns.
|
||||
case :erlang.phash2(1, 1) do
|
||||
0 -> exit({:bad_event, event})
|
||||
1 -> :remove_handler
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_call(msg, _state) do
|
||||
# We do this to trick Dialyzer to not complain about non-local returns.
|
||||
reason = {:bad_call, msg}
|
||||
|
||||
case :erlang.phash2(1, 1) do
|
||||
0 -> exit(reason)
|
||||
1 -> {:remove_handler, reason}
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_info(_msg, state) do
|
||||
{:ok, state}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def terminate(_reason, _state) do
|
||||
:ok
|
||||
end
|
||||
|
||||
@doc false
|
||||
def code_change(_old, state, _extra) do
|
||||
{:ok, state}
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Enumerable, for: GenEvent.Stream do
|
||||
def reduce(stream, acc, fun) do
|
||||
start_fun = fn -> start(stream) end
|
||||
next_fun = &next(stream, &1)
|
||||
stop_fun = &stop(stream, &1)
|
||||
Stream.resource(start_fun, next_fun, stop_fun).(acc, wrap_reducer(fun))
|
||||
end
|
||||
|
||||
def count(_stream) do
|
||||
{:error, __MODULE__}
|
||||
end
|
||||
|
||||
def member?(_stream, _item) do
|
||||
{:error, __MODULE__}
|
||||
end
|
||||
|
||||
def slice(_stream) do
|
||||
{:error, __MODULE__}
|
||||
end
|
||||
|
||||
defp wrap_reducer(fun) do
|
||||
fn
|
||||
{:ack, manager, ref, event}, acc ->
|
||||
send(manager, {ref, :ok})
|
||||
fun.(event, acc)
|
||||
|
||||
{:async, _manager, _ref, event}, acc ->
|
||||
fun.(event, acc)
|
||||
|
||||
{:sync, manager, ref, event}, acc ->
|
||||
try do
|
||||
fun.(event, acc)
|
||||
after
|
||||
send(manager, {ref, :ok})
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defp start(%{manager: manager} = stream) do
|
||||
try do
|
||||
{:ok, {pid, ref}} =
|
||||
:gen.call(manager, self(), {:add_process_handler, self(), self()}, :infinity)
|
||||
|
||||
mon_ref = Process.monitor(pid)
|
||||
{pid, ref, mon_ref}
|
||||
catch
|
||||
:exit, reason -> exit({reason, {__MODULE__, :start, [stream]}})
|
||||
end
|
||||
end
|
||||
|
||||
defp next(%{timeout: timeout} = stream, {pid, ref, mon_ref} = acc) do
|
||||
self = self()
|
||||
|
||||
receive do
|
||||
# Got an async event.
|
||||
{_from, {^pid, ^ref}, {:notify, event}} ->
|
||||
{[{:async, pid, ref, event}], acc}
|
||||
|
||||
# Got a sync event.
|
||||
{_from, {^pid, ^ref}, {:sync_notify, event}} ->
|
||||
{[{:sync, pid, ref, event}], acc}
|
||||
|
||||
# Got an ack event.
|
||||
{_from, {^pid, ^ref}, {:ack_notify, event}} ->
|
||||
{[{:ack, pid, ref, event}], acc}
|
||||
|
||||
# The handler was removed. Stop iteration, resolve the
|
||||
# event later. We need to demonitor now, otherwise DOWN
|
||||
# appears with higher priority in the shutdown process.
|
||||
{:gen_event_EXIT, {^pid, ^ref}, _reason} = event ->
|
||||
Process.demonitor(mon_ref, [:flush])
|
||||
send(self, event)
|
||||
{:halt, {:removed, acc}}
|
||||
|
||||
# The manager died. Stop iteration, resolve the event later.
|
||||
{:DOWN, ^mon_ref, _, _, _} = event ->
|
||||
send(self, event)
|
||||
{:halt, {:removed, acc}}
|
||||
after
|
||||
timeout ->
|
||||
exit({:timeout, {__MODULE__, :next, [stream, acc]}})
|
||||
end
|
||||
end
|
||||
|
||||
# If we reach this branch, we know the handler was already
|
||||
# removed, so we don't trigger a request for doing so.
|
||||
defp stop(stream, {:removed, {pid, ref, mon_ref} = acc}) do
|
||||
case wait_for_handler_removal(pid, ref, mon_ref) do
|
||||
:ok ->
|
||||
flush_events(ref)
|
||||
|
||||
{:error, reason} ->
|
||||
exit({reason, {__MODULE__, :stop, [stream, acc]}})
|
||||
end
|
||||
end
|
||||
|
||||
# If we reach this branch, the handler was not removed yet,
|
||||
# so we trigger a request for doing so.
|
||||
defp stop(stream, {pid, ref, _} = acc) do
|
||||
_ = :gen_event.delete_handler(pid, {pid, ref}, :shutdown)
|
||||
stop(stream, {:removed, acc})
|
||||
end
|
||||
|
||||
defp wait_for_handler_removal(pid, ref, mon_ref) do
|
||||
receive do
|
||||
{:gen_event_EXIT, {^pid, ^ref}, _reason} ->
|
||||
Process.demonitor(mon_ref, [:flush])
|
||||
:ok
|
||||
|
||||
{:DOWN, ^mon_ref, _, _, reason} ->
|
||||
{:error, reason}
|
||||
end
|
||||
end
|
||||
|
||||
defp flush_events(ref) do
|
||||
receive do
|
||||
{_from, {_pid, ^ref}, {notify, _event}}
|
||||
when notify in [:notify, :ack_notify, :sync_notify] ->
|
||||
flush_events(ref)
|
||||
after
|
||||
0 -> :ok
|
||||
end
|
||||
end
|
||||
end
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,309 +0,0 @@
|
||||
defmodule HashDict do
|
||||
@moduledoc """
|
||||
Tuple-based HashDict implementation.
|
||||
|
||||
This module is deprecated. Use the `Map` module instead.
|
||||
"""
|
||||
|
||||
@moduledoc deprecated: "Use Map instead"
|
||||
|
||||
use Dict
|
||||
|
||||
@node_bitmap 0b111
|
||||
@node_shift 3
|
||||
@node_size 8
|
||||
@node_template :erlang.make_tuple(@node_size, [])
|
||||
|
||||
@opaque t :: %__MODULE__{size: non_neg_integer, root: term}
|
||||
@doc false
|
||||
defstruct size: 0, root: @node_template
|
||||
|
||||
# Inline common instructions
|
||||
@compile :inline_list_funcs
|
||||
@compile {:inline, key_hash: 1, key_mask: 1, key_shift: 1}
|
||||
|
||||
message = "Use maps and the Map module instead"
|
||||
|
||||
@doc """
|
||||
Creates a new empty dict.
|
||||
"""
|
||||
@spec new :: Dict.t()
|
||||
@deprecated message
|
||||
def new do
|
||||
%HashDict{}
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def put(%HashDict{root: root, size: size}, key, value) do
|
||||
{root, counter} = do_put(root, key, value, key_hash(key))
|
||||
%HashDict{root: root, size: size + counter}
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def update!(%HashDict{root: root, size: size} = dict, key, fun) when is_function(fun, 1) do
|
||||
{root, counter} =
|
||||
do_update(root, key, fn -> raise KeyError, key: key, term: dict end, fun, key_hash(key))
|
||||
|
||||
%HashDict{root: root, size: size + counter}
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def update(%HashDict{root: root, size: size}, key, initial, fun) when is_function(fun, 1) do
|
||||
{root, counter} = do_update(root, key, fn -> initial end, fun, key_hash(key))
|
||||
%HashDict{root: root, size: size + counter}
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def fetch(%HashDict{root: root}, key) do
|
||||
do_fetch(root, key, key_hash(key))
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def delete(dict, key) do
|
||||
case dict_delete(dict, key) do
|
||||
{dict, _value} -> dict
|
||||
:error -> dict
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def pop(dict, key, default \\ nil) do
|
||||
case dict_delete(dict, key) do
|
||||
{dict, value} -> {value, dict}
|
||||
:error -> {default, dict}
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def size(%HashDict{size: size}) do
|
||||
size
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated message
|
||||
def reduce(%HashDict{root: root}, acc, fun) do
|
||||
do_reduce(root, acc, fun, @node_size, fn
|
||||
{:suspend, acc} -> {:suspended, acc, &{:done, elem(&1, 1)}}
|
||||
{:halt, acc} -> {:halted, acc}
|
||||
{:cont, acc} -> {:done, acc}
|
||||
end)
|
||||
end
|
||||
|
||||
## General helpers
|
||||
|
||||
@doc false
|
||||
def dict_delete(%HashDict{root: root, size: size}, key) do
|
||||
case do_delete(root, key, key_hash(key)) do
|
||||
{root, value} -> {%HashDict{root: root, size: size - 1}, value}
|
||||
:error -> :error
|
||||
end
|
||||
end
|
||||
|
||||
## Dict manipulation
|
||||
|
||||
defp do_fetch(node, key, hash) do
|
||||
index = key_mask(hash)
|
||||
|
||||
case elem(node, index) do
|
||||
[^key | v] -> {:ok, v}
|
||||
{^key, v, _} -> {:ok, v}
|
||||
{_, _, n} -> do_fetch(n, key, key_shift(hash))
|
||||
_ -> :error
|
||||
end
|
||||
end
|
||||
|
||||
defp do_put(node, key, value, hash) do
|
||||
index = key_mask(hash)
|
||||
|
||||
case elem(node, index) do
|
||||
[] ->
|
||||
{put_elem(node, index, [key | value]), 1}
|
||||
|
||||
[^key | _] ->
|
||||
{put_elem(node, index, [key | value]), 0}
|
||||
|
||||
[k | v] ->
|
||||
n = put_elem(@node_template, key_mask(key_shift(hash)), [key | value])
|
||||
{put_elem(node, index, {k, v, n}), 1}
|
||||
|
||||
{^key, _, n} ->
|
||||
{put_elem(node, index, {key, value, n}), 0}
|
||||
|
||||
{k, v, n} ->
|
||||
{n, counter} = do_put(n, key, value, key_shift(hash))
|
||||
{put_elem(node, index, {k, v, n}), counter}
|
||||
end
|
||||
end
|
||||
|
||||
defp do_update(node, key, initial, fun, hash) do
|
||||
index = key_mask(hash)
|
||||
|
||||
case elem(node, index) do
|
||||
[] ->
|
||||
{put_elem(node, index, [key | initial.()]), 1}
|
||||
|
||||
[^key | value] ->
|
||||
{put_elem(node, index, [key | fun.(value)]), 0}
|
||||
|
||||
[k | v] ->
|
||||
n = put_elem(@node_template, key_mask(key_shift(hash)), [key | initial.()])
|
||||
{put_elem(node, index, {k, v, n}), 1}
|
||||
|
||||
{^key, value, n} ->
|
||||
{put_elem(node, index, {key, fun.(value), n}), 0}
|
||||
|
||||
{k, v, n} ->
|
||||
{n, counter} = do_update(n, key, initial, fun, key_shift(hash))
|
||||
{put_elem(node, index, {k, v, n}), counter}
|
||||
end
|
||||
end
|
||||
|
||||
defp do_delete(node, key, hash) do
|
||||
index = key_mask(hash)
|
||||
|
||||
case elem(node, index) do
|
||||
[] ->
|
||||
:error
|
||||
|
||||
[^key | value] ->
|
||||
{put_elem(node, index, []), value}
|
||||
|
||||
[_ | _] ->
|
||||
:error
|
||||
|
||||
{^key, value, n} ->
|
||||
{put_elem(node, index, do_compact_node(n)), value}
|
||||
|
||||
{k, v, n} ->
|
||||
case do_delete(n, key, key_shift(hash)) do
|
||||
{@node_template, value} ->
|
||||
{put_elem(node, index, [k | v]), value}
|
||||
|
||||
{n, value} ->
|
||||
{put_elem(node, index, {k, v, n}), value}
|
||||
|
||||
:error ->
|
||||
:error
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
Enum.each(0..(@node_size - 1), fn index ->
|
||||
defp do_compact_node(node) when elem(node, unquote(index)) != [] do
|
||||
case elem(node, unquote(index)) do
|
||||
[k | v] ->
|
||||
case put_elem(node, unquote(index), []) do
|
||||
@node_template -> [k | v]
|
||||
n -> {k, v, n}
|
||||
end
|
||||
|
||||
{k, v, n} ->
|
||||
{k, v, put_elem(node, unquote(index), do_compact_node(n))}
|
||||
end
|
||||
end
|
||||
end)
|
||||
|
||||
## Dict reduce
|
||||
|
||||
defp do_reduce_each(_node, {:halt, acc}, _fun, _next) do
|
||||
{:halted, acc}
|
||||
end
|
||||
|
||||
defp do_reduce_each(node, {:suspend, acc}, fun, next) do
|
||||
{:suspended, acc, &do_reduce_each(node, &1, fun, next)}
|
||||
end
|
||||
|
||||
defp do_reduce_each([], acc, _fun, next) do
|
||||
next.(acc)
|
||||
end
|
||||
|
||||
defp do_reduce_each([k | v], {:cont, acc}, fun, next) do
|
||||
next.(fun.({k, v}, acc))
|
||||
end
|
||||
|
||||
defp do_reduce_each({k, v, n}, {:cont, acc}, fun, next) do
|
||||
do_reduce(n, fun.({k, v}, acc), fun, @node_size, next)
|
||||
end
|
||||
|
||||
defp do_reduce(node, acc, fun, count, next) when count > 0 do
|
||||
do_reduce_each(
|
||||
:erlang.element(count, node),
|
||||
acc,
|
||||
fun,
|
||||
&do_reduce(node, &1, fun, count - 1, next)
|
||||
)
|
||||
end
|
||||
|
||||
defp do_reduce(_node, acc, _fun, 0, next) do
|
||||
next.(acc)
|
||||
end
|
||||
|
||||
## Key operations
|
||||
|
||||
import Bitwise
|
||||
|
||||
defp key_hash(key) do
|
||||
:erlang.phash2(key)
|
||||
end
|
||||
|
||||
defp key_mask(hash) do
|
||||
hash &&& @node_bitmap
|
||||
end
|
||||
|
||||
defp key_shift(hash) do
|
||||
hash >>> @node_shift
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Enumerable, for: HashDict do
|
||||
def reduce(dict, acc, fun) do
|
||||
# Avoid warnings about HashDict being deprecated.
|
||||
module = HashDict
|
||||
module.reduce(dict, acc, fun)
|
||||
end
|
||||
|
||||
def member?(dict, {key, value}) do
|
||||
# Avoid warnings about HashDict being deprecated.
|
||||
module = HashDict
|
||||
{:ok, match?({:ok, ^value}, module.fetch(dict, key))}
|
||||
end
|
||||
|
||||
def member?(_dict, _) do
|
||||
{:ok, false}
|
||||
end
|
||||
|
||||
def count(dict) do
|
||||
# Avoid warnings about HashDict being deprecated.
|
||||
module = HashDict
|
||||
{:ok, module.size(dict)}
|
||||
end
|
||||
|
||||
def slice(_dict) do
|
||||
{:error, __MODULE__}
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Collectable, for: HashDict do
|
||||
def into(original) do
|
||||
# Avoid warnings about HashDict being deprecated.
|
||||
module = HashDict
|
||||
|
||||
collector_fun = fn
|
||||
dict, {:cont, {key, value}} -> module.put(dict, key, value)
|
||||
dict, :done -> dict
|
||||
_, :halt -> :ok
|
||||
end
|
||||
|
||||
{original, collector_fun}
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect, for: HashDict do
|
||||
import Inspect.Algebra
|
||||
|
||||
def inspect(dict, opts) do
|
||||
# Avoid warnings about HashDict being deprecated.
|
||||
module = HashDict
|
||||
concat(["#HashDict<", Inspect.List.inspect(module.to_list(dict), opts), ">"])
|
||||
end
|
||||
end
|
||||
@@ -1,319 +0,0 @@
|
||||
defmodule HashSet do
|
||||
@moduledoc """
|
||||
Tuple-based HashSet implementation.
|
||||
|
||||
This module is deprecated. Use the `MapSet` module instead.
|
||||
"""
|
||||
|
||||
@moduledoc deprecated: "Use MapSet instead"
|
||||
|
||||
@node_bitmap 0b111
|
||||
@node_shift 3
|
||||
@node_size 8
|
||||
@node_template :erlang.make_tuple(@node_size, [])
|
||||
|
||||
message = "Use the MapSet module instead"
|
||||
|
||||
@opaque t :: %__MODULE__{size: non_neg_integer, root: term}
|
||||
@doc false
|
||||
defstruct size: 0, root: @node_template
|
||||
|
||||
# Inline common instructions
|
||||
@compile :inline_list_funcs
|
||||
@compile {:inline, key_hash: 1, key_mask: 1, key_shift: 1}
|
||||
|
||||
@deprecated message
|
||||
@spec new :: Set.t()
|
||||
def new do
|
||||
%HashSet{}
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def union(%HashSet{size: size1} = set1, %HashSet{size: size2} = set2) when size1 <= size2 do
|
||||
set_fold(set1, set2, fn v, acc -> put(acc, v) end)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def union(%HashSet{} = set1, %HashSet{} = set2) do
|
||||
set_fold(set2, set1, fn v, acc -> put(acc, v) end)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def intersection(%HashSet{} = set1, %HashSet{} = set2) do
|
||||
set_fold(set1, %HashSet{}, fn v, acc ->
|
||||
if member?(set2, v), do: put(acc, v), else: acc
|
||||
end)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def difference(%HashSet{} = set1, %HashSet{} = set2) do
|
||||
set_fold(set2, set1, fn v, acc -> delete(acc, v) end)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def to_list(set) do
|
||||
set_fold(set, [], &[&1 | &2]) |> :lists.reverse()
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def equal?(%HashSet{size: size1} = set1, %HashSet{size: size2} = set2) do
|
||||
case size1 do
|
||||
^size2 -> subset?(set1, set2)
|
||||
_ -> false
|
||||
end
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def subset?(%HashSet{} = set1, %HashSet{} = set2) do
|
||||
reduce(set1, {:cont, true}, fn member, acc ->
|
||||
case member?(set2, member) do
|
||||
true -> {:cont, acc}
|
||||
_ -> {:halt, false}
|
||||
end
|
||||
end)
|
||||
|> elem(1)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def disjoint?(%HashSet{} = set1, %HashSet{} = set2) do
|
||||
reduce(set2, {:cont, true}, fn member, acc ->
|
||||
case member?(set1, member) do
|
||||
false -> {:cont, acc}
|
||||
_ -> {:halt, false}
|
||||
end
|
||||
end)
|
||||
|> elem(1)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def member?(%HashSet{root: root}, term) do
|
||||
do_member?(root, term, key_hash(term))
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def put(%HashSet{root: root, size: size}, term) do
|
||||
{root, counter} = do_put(root, term, key_hash(term))
|
||||
%HashSet{root: root, size: size + counter}
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def delete(%HashSet{root: root, size: size} = set, term) do
|
||||
case do_delete(root, term, key_hash(term)) do
|
||||
{:ok, root} -> %HashSet{root: root, size: size - 1}
|
||||
:error -> set
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
def reduce(%HashSet{root: root}, acc, fun) do
|
||||
do_reduce(root, acc, fun, @node_size, fn
|
||||
{:suspend, acc} -> {:suspended, acc, &{:done, elem(&1, 1)}}
|
||||
{:halt, acc} -> {:halted, acc}
|
||||
{:cont, acc} -> {:done, acc}
|
||||
end)
|
||||
end
|
||||
|
||||
@deprecated message
|
||||
def size(%HashSet{size: size}) do
|
||||
size
|
||||
end
|
||||
|
||||
## Set helpers
|
||||
|
||||
defp set_fold(%HashSet{root: root}, acc, fun) do
|
||||
do_fold(root, acc, fun, @node_size)
|
||||
end
|
||||
|
||||
## Set manipulation
|
||||
|
||||
defp do_member?(node, term, hash) do
|
||||
index = key_mask(hash)
|
||||
|
||||
case elem(node, index) do
|
||||
[] -> false
|
||||
[^term | _] -> true
|
||||
[_] -> false
|
||||
[_ | n] -> do_member?(n, term, key_shift(hash))
|
||||
end
|
||||
end
|
||||
|
||||
defp do_put(node, term, hash) do
|
||||
index = key_mask(hash)
|
||||
|
||||
case elem(node, index) do
|
||||
[] ->
|
||||
{put_elem(node, index, [term]), 1}
|
||||
|
||||
[^term | _] ->
|
||||
{node, 0}
|
||||
|
||||
[t] ->
|
||||
n = put_elem(@node_template, key_mask(key_shift(hash)), [term])
|
||||
{put_elem(node, index, [t | n]), 1}
|
||||
|
||||
[t | n] ->
|
||||
{n, counter} = do_put(n, term, key_shift(hash))
|
||||
{put_elem(node, index, [t | n]), counter}
|
||||
end
|
||||
end
|
||||
|
||||
defp do_delete(node, term, hash) do
|
||||
index = key_mask(hash)
|
||||
|
||||
case elem(node, index) do
|
||||
[] ->
|
||||
:error
|
||||
|
||||
[^term] ->
|
||||
{:ok, put_elem(node, index, [])}
|
||||
|
||||
[_] ->
|
||||
:error
|
||||
|
||||
[^term | n] ->
|
||||
{:ok, put_elem(node, index, do_compact_node(n))}
|
||||
|
||||
[t | n] ->
|
||||
case do_delete(n, term, key_shift(hash)) do
|
||||
{:ok, @node_template} ->
|
||||
{:ok, put_elem(node, index, [t])}
|
||||
|
||||
{:ok, n} ->
|
||||
{:ok, put_elem(node, index, [t | n])}
|
||||
|
||||
:error ->
|
||||
:error
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
Enum.each(0..(@node_size - 1), fn index ->
|
||||
defp do_compact_node(node) when elem(node, unquote(index)) != [] do
|
||||
case elem(node, unquote(index)) do
|
||||
[t] ->
|
||||
case put_elem(node, unquote(index), []) do
|
||||
@node_template -> [t]
|
||||
n -> [t | n]
|
||||
end
|
||||
|
||||
[t | n] ->
|
||||
[t | put_elem(node, unquote(index), do_compact_node(n))]
|
||||
end
|
||||
end
|
||||
end)
|
||||
|
||||
## Set fold
|
||||
|
||||
defp do_fold_each([], acc, _fun), do: acc
|
||||
defp do_fold_each([t], acc, fun), do: fun.(t, acc)
|
||||
defp do_fold_each([t | n], acc, fun), do: do_fold(n, fun.(t, acc), fun, @node_size)
|
||||
|
||||
defp do_fold(node, acc, fun, count) when count > 0 do
|
||||
acc = do_fold_each(:erlang.element(count, node), acc, fun)
|
||||
do_fold(node, acc, fun, count - 1)
|
||||
end
|
||||
|
||||
defp do_fold(_node, acc, _fun, 0) do
|
||||
acc
|
||||
end
|
||||
|
||||
## Set reduce
|
||||
|
||||
defp do_reduce_each(_node, {:halt, acc}, _fun, _next) do
|
||||
{:halted, acc}
|
||||
end
|
||||
|
||||
defp do_reduce_each(node, {:suspend, acc}, fun, next) do
|
||||
{:suspended, acc, &do_reduce_each(node, &1, fun, next)}
|
||||
end
|
||||
|
||||
defp do_reduce_each([], acc, _fun, next) do
|
||||
next.(acc)
|
||||
end
|
||||
|
||||
defp do_reduce_each([t], {:cont, acc}, fun, next) do
|
||||
next.(fun.(t, acc))
|
||||
end
|
||||
|
||||
defp do_reduce_each([t | n], {:cont, acc}, fun, next) do
|
||||
do_reduce(n, fun.(t, acc), fun, @node_size, next)
|
||||
end
|
||||
|
||||
defp do_reduce(node, acc, fun, count, next) when count > 0 do
|
||||
do_reduce_each(
|
||||
:erlang.element(count, node),
|
||||
acc,
|
||||
fun,
|
||||
&do_reduce(node, &1, fun, count - 1, next)
|
||||
)
|
||||
end
|
||||
|
||||
defp do_reduce(_node, acc, _fun, 0, next) do
|
||||
next.(acc)
|
||||
end
|
||||
|
||||
## Key operations
|
||||
|
||||
import Bitwise
|
||||
|
||||
defp key_hash(key) do
|
||||
:erlang.phash2(key)
|
||||
end
|
||||
|
||||
defp key_mask(hash) do
|
||||
hash &&& @node_bitmap
|
||||
end
|
||||
|
||||
defp key_shift(hash) do
|
||||
hash >>> @node_shift
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Enumerable, for: HashSet do
|
||||
def reduce(set, acc, fun) do
|
||||
# Avoid warnings about HashSet being deprecated.
|
||||
module = HashSet
|
||||
module.reduce(set, acc, fun)
|
||||
end
|
||||
|
||||
def member?(set, term) do
|
||||
# Avoid warnings about HashSet being deprecated.
|
||||
module = HashSet
|
||||
{:ok, module.member?(set, term)}
|
||||
end
|
||||
|
||||
def count(set) do
|
||||
# Avoid warnings about HashSet being deprecated.
|
||||
module = HashSet
|
||||
{:ok, module.size(set)}
|
||||
end
|
||||
|
||||
def slice(_set) do
|
||||
{:error, __MODULE__}
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Collectable, for: HashSet do
|
||||
def into(original) do
|
||||
# Avoid warnings about HashSet being deprecated.
|
||||
module = HashSet
|
||||
|
||||
collector_fun = fn
|
||||
set, {:cont, term} -> module.put(set, term)
|
||||
set, :done -> set
|
||||
_, :halt -> :ok
|
||||
end
|
||||
|
||||
{original, collector_fun}
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect, for: HashSet do
|
||||
import Inspect.Algebra
|
||||
|
||||
def inspect(set, opts) do
|
||||
# Avoid warnings about HashSet being deprecated.
|
||||
module = HashSet
|
||||
concat(["#HashSet<", Inspect.List.inspect(module.to_list(set), opts), ">"])
|
||||
end
|
||||
end
|
||||
@@ -1,471 +0,0 @@
|
||||
import Kernel, except: [inspect: 1]
|
||||
import Inspect.Algebra
|
||||
|
||||
alias Code.Identifier
|
||||
|
||||
defprotocol Inspect do
|
||||
@moduledoc """
|
||||
The `Inspect` protocol converts an Elixir data structure into an
|
||||
algebra document.
|
||||
|
||||
This documentation refers to implementing the `Inspect` protocol
|
||||
for your own data structures. To learn more about using inspect,
|
||||
see `Kernel.inspect/2` and `IO.inspect/2`.
|
||||
|
||||
The `inspect/2` function receives the entity to be inspected
|
||||
followed by the inspecting options, represented by the struct
|
||||
`Inspect.Opts`. Building of the algebra document is done with
|
||||
`Inspect.Algebra`.
|
||||
|
||||
## Examples
|
||||
|
||||
Many times, inspecting a structure can be implemented in function
|
||||
of existing entities. For example, here is `MapSet`'s `inspect/2`
|
||||
implementation:
|
||||
|
||||
defimpl Inspect, for: MapSet do
|
||||
import Inspect.Algebra
|
||||
|
||||
def inspect(dict, opts) do
|
||||
concat(["#MapSet<", to_doc(MapSet.to_list(dict), opts), ">"])
|
||||
end
|
||||
end
|
||||
|
||||
The [`concat/1`](`Inspect.Algebra.concat/1`) function comes from `Inspect.Algebra` and it
|
||||
concatenates algebra documents together. In the example above,
|
||||
it is concatenating the string `"MapSet<"` (all strings are
|
||||
valid algebra documents that keep their formatting when pretty
|
||||
printed), the document returned by `Inspect.Algebra.to_doc/2` and the
|
||||
other string `">"`.
|
||||
|
||||
Since regular strings are valid entities in an algebra document,
|
||||
an implementation of the `Inspect` protocol may simply return a
|
||||
string, although that will devoid it of any pretty-printing.
|
||||
|
||||
## Error handling
|
||||
|
||||
In case there is an error while your structure is being inspected,
|
||||
Elixir will raise an `ArgumentError` error and will automatically fall back
|
||||
to a raw representation for printing the structure.
|
||||
|
||||
You can however access the underlying error by invoking the `Inspect`
|
||||
implementation directly. For example, to test `Inspect.MapSet` above,
|
||||
you can invoke it as:
|
||||
|
||||
Inspect.MapSet.inspect(MapSet.new(), %Inspect.Opts{})
|
||||
|
||||
## Deriving
|
||||
|
||||
The `Inspect` protocol can be derived to hide certain fields from
|
||||
structs, so they don't show up in logs, inspects and similar. This
|
||||
is especially useful for fields containing private information.
|
||||
|
||||
The options `:only` and `:except` can be used with `@derive` to
|
||||
specify which fields should and should not appear in the
|
||||
algebra document:
|
||||
|
||||
defmodule User do
|
||||
@derive {Inspect, only: [:id, :name]}
|
||||
defstruct [:id, :name, :address]
|
||||
end
|
||||
|
||||
inspect(%User{id: 1, name: "Homer", address: "742 Evergreen Terrace"})
|
||||
#=> #User<id: 1, name: "Homer", ...>
|
||||
|
||||
"""
|
||||
|
||||
# Handle structs in Any
|
||||
@fallback_to_any true
|
||||
|
||||
@doc """
|
||||
Converts `term` into an algebra document.
|
||||
|
||||
This function shouldn't be invoked directly, unless when implementing
|
||||
a custom `inspect_fun` to be given to `Inspect.Opts`. Everywhere else,
|
||||
`Inspect.Algebra.to_doc/2` should be preferred as it handles structs
|
||||
and exceptions.
|
||||
"""
|
||||
@spec inspect(t, Inspect.Opts.t()) :: Inspect.Algebra.t()
|
||||
def inspect(term, opts)
|
||||
end
|
||||
|
||||
defimpl Inspect, for: Atom do
|
||||
require Macro
|
||||
|
||||
def inspect(atom, opts) do
|
||||
color(Identifier.inspect_as_atom(atom), color_key(atom), opts)
|
||||
end
|
||||
|
||||
defp color_key(atom) when is_boolean(atom), do: :boolean
|
||||
defp color_key(nil), do: nil
|
||||
defp color_key(_), do: :atom
|
||||
end
|
||||
|
||||
defimpl Inspect, for: BitString do
|
||||
def inspect(term, opts) when is_binary(term) do
|
||||
%Inspect.Opts{binaries: bins, base: base, printable_limit: printable_limit} = opts
|
||||
|
||||
if base == :decimal and
|
||||
(bins == :as_strings or (bins == :infer and String.printable?(term, printable_limit))) do
|
||||
inspected =
|
||||
case Identifier.escape(term, ?", printable_limit) do
|
||||
{escaped, ""} -> [?", escaped, ?"]
|
||||
{escaped, _} -> [?", escaped, ?", " <> ..."]
|
||||
end
|
||||
|
||||
color(IO.iodata_to_binary(inspected), :string, opts)
|
||||
else
|
||||
inspect_bitstring(term, opts)
|
||||
end
|
||||
end
|
||||
|
||||
def inspect(term, opts) do
|
||||
inspect_bitstring(term, opts)
|
||||
end
|
||||
|
||||
defp inspect_bitstring("", opts) do
|
||||
color("<<>>", :binary, opts)
|
||||
end
|
||||
|
||||
defp inspect_bitstring(bitstring, opts) do
|
||||
left = color("<<", :binary, opts)
|
||||
right = color(">>", :binary, opts)
|
||||
inner = each_bit(bitstring, opts.limit, opts)
|
||||
group(concat(concat(left, nest(inner, 2)), right))
|
||||
end
|
||||
|
||||
defp each_bit(_, 0, _) do
|
||||
"..."
|
||||
end
|
||||
|
||||
defp each_bit(<<>>, _counter, _opts) do
|
||||
:doc_nil
|
||||
end
|
||||
|
||||
defp each_bit(<<h::8>>, _counter, opts) do
|
||||
Inspect.Integer.inspect(h, opts)
|
||||
end
|
||||
|
||||
defp each_bit(<<h, t::bitstring>>, counter, opts) do
|
||||
flex_glue(
|
||||
concat(Inspect.Integer.inspect(h, opts), ","),
|
||||
each_bit(t, decrement(counter), opts)
|
||||
)
|
||||
end
|
||||
|
||||
defp each_bit(bitstring, _counter, opts) do
|
||||
size = bit_size(bitstring)
|
||||
<<h::size(size)>> = bitstring
|
||||
Inspect.Integer.inspect(h, opts) <> "::size(" <> Integer.to_string(size) <> ")"
|
||||
end
|
||||
|
||||
@compile {:inline, decrement: 1}
|
||||
defp decrement(:infinity), do: :infinity
|
||||
defp decrement(counter), do: counter - 1
|
||||
end
|
||||
|
||||
defimpl Inspect, for: List do
|
||||
def inspect([], opts) do
|
||||
color("[]", :list, opts)
|
||||
end
|
||||
|
||||
# TODO: Remove :char_list and :as_char_lists handling on v2.0
|
||||
def inspect(term, opts) do
|
||||
%Inspect.Opts{
|
||||
charlists: lists,
|
||||
char_lists: lists_deprecated,
|
||||
printable_limit: printable_limit
|
||||
} = opts
|
||||
|
||||
lists =
|
||||
if lists == :infer and lists_deprecated != :infer do
|
||||
case lists_deprecated do
|
||||
:as_char_lists ->
|
||||
IO.warn(
|
||||
"the :char_lists inspect option and its :as_char_lists " <>
|
||||
"value are deprecated, use the :charlists option and its " <>
|
||||
":as_charlists value instead"
|
||||
)
|
||||
|
||||
:as_charlists
|
||||
|
||||
_ ->
|
||||
IO.warn("the :char_lists inspect option is deprecated, use :charlists instead")
|
||||
lists_deprecated
|
||||
end
|
||||
else
|
||||
lists
|
||||
end
|
||||
|
||||
open = color("[", :list, opts)
|
||||
sep = color(",", :list, opts)
|
||||
close = color("]", :list, opts)
|
||||
|
||||
cond do
|
||||
lists == :as_charlists or (lists == :infer and List.ascii_printable?(term, printable_limit)) ->
|
||||
inspected =
|
||||
case Identifier.escape(IO.chardata_to_string(term), ?', printable_limit) do
|
||||
{escaped, ""} -> [?', escaped, ?']
|
||||
{escaped, _} -> [?', escaped, ?', " ++ ..."]
|
||||
end
|
||||
|
||||
IO.iodata_to_binary(inspected)
|
||||
|
||||
keyword?(term) ->
|
||||
container_doc(open, term, close, opts, &keyword/2, separator: sep, break: :strict)
|
||||
|
||||
true ->
|
||||
container_doc(open, term, close, opts, &to_doc/2, separator: sep)
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
def keyword({key, value}, opts) do
|
||||
key = color(Identifier.inspect_as_key(key), :atom, opts)
|
||||
concat(key, concat(" ", to_doc(value, opts)))
|
||||
end
|
||||
|
||||
@doc false
|
||||
def keyword?([{key, _value} | rest]) when is_atom(key) do
|
||||
case Atom.to_charlist(key) do
|
||||
'Elixir.' ++ _ -> false
|
||||
_ -> keyword?(rest)
|
||||
end
|
||||
end
|
||||
|
||||
def keyword?([]), do: true
|
||||
def keyword?(_other), do: false
|
||||
end
|
||||
|
||||
defimpl Inspect, for: Tuple do
|
||||
def inspect(tuple, opts) do
|
||||
open = color("{", :tuple, opts)
|
||||
sep = color(",", :tuple, opts)
|
||||
close = color("}", :tuple, opts)
|
||||
container_opts = [separator: sep, break: :flex]
|
||||
container_doc(open, Tuple.to_list(tuple), close, opts, &to_doc/2, container_opts)
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect, for: Map do
|
||||
def inspect(map, opts) do
|
||||
inspect(map, "", opts)
|
||||
end
|
||||
|
||||
def inspect(map, name, opts) do
|
||||
map = :maps.to_list(map)
|
||||
open = color("%" <> name <> "{", :map, opts)
|
||||
sep = color(",", :map, opts)
|
||||
close = color("}", :map, opts)
|
||||
container_doc(open, map, close, opts, traverse_fun(map, opts), separator: sep, break: :strict)
|
||||
end
|
||||
|
||||
defp traverse_fun(list, opts) do
|
||||
if Inspect.List.keyword?(list) do
|
||||
&Inspect.List.keyword/2
|
||||
else
|
||||
sep = color(" => ", :map, opts)
|
||||
&to_map(&1, &2, sep)
|
||||
end
|
||||
end
|
||||
|
||||
defp to_map({key, value}, opts, sep) do
|
||||
concat(concat(to_doc(key, opts), sep), to_doc(value, opts))
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect, for: Integer do
|
||||
def inspect(term, %Inspect.Opts{base: base} = opts) do
|
||||
inspected = Integer.to_string(term, base_to_value(base)) |> prepend_prefix(base)
|
||||
color(inspected, :number, opts)
|
||||
end
|
||||
|
||||
defp base_to_value(base) do
|
||||
case base do
|
||||
:binary -> 2
|
||||
:decimal -> 10
|
||||
:octal -> 8
|
||||
:hex -> 16
|
||||
end
|
||||
end
|
||||
|
||||
defp prepend_prefix(value, :decimal), do: value
|
||||
|
||||
defp prepend_prefix(<<?-, value::binary>>, base) do
|
||||
"-" <> prepend_prefix(value, base)
|
||||
end
|
||||
|
||||
defp prepend_prefix(value, base) do
|
||||
prefix =
|
||||
case base do
|
||||
:binary -> "0b"
|
||||
:octal -> "0o"
|
||||
:hex -> "0x"
|
||||
end
|
||||
|
||||
prefix <> value
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect, for: Float do
|
||||
def inspect(term, opts) do
|
||||
inspected = IO.iodata_to_binary(:io_lib_format.fwrite_g(term))
|
||||
color(inspected, :number, opts)
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect, for: Regex do
|
||||
def inspect(regex, opts) do
|
||||
{escaped, _} =
|
||||
regex.source
|
||||
|> normalize(<<>>)
|
||||
|> Identifier.escape(?/, :infinity, &escape_map/1)
|
||||
|
||||
source = IO.iodata_to_binary(['~r/', escaped, ?/, regex.opts])
|
||||
color(source, :regex, opts)
|
||||
end
|
||||
|
||||
defp normalize(<<?\\, ?\\, rest::binary>>, acc), do: normalize(rest, <<acc::binary, ?\\, ?\\>>)
|
||||
defp normalize(<<?\\, ?/, rest::binary>>, acc), do: normalize(rest, <<acc::binary, ?/>>)
|
||||
defp normalize(<<char, rest::binary>>, acc), do: normalize(rest, <<acc::binary, char>>)
|
||||
defp normalize(<<>>, acc), do: acc
|
||||
|
||||
defp escape_map(?\a), do: '\\a'
|
||||
defp escape_map(?\f), do: '\\f'
|
||||
defp escape_map(?\n), do: '\\n'
|
||||
defp escape_map(?\r), do: '\\r'
|
||||
defp escape_map(?\t), do: '\\t'
|
||||
defp escape_map(?\v), do: '\\v'
|
||||
defp escape_map(_), do: false
|
||||
end
|
||||
|
||||
defimpl Inspect, for: Function do
|
||||
def inspect(function, _opts) do
|
||||
fun_info = Function.info(function)
|
||||
mod = fun_info[:module]
|
||||
name = fun_info[:name]
|
||||
|
||||
cond do
|
||||
fun_info[:type] == :external and fun_info[:env] == [] ->
|
||||
inspected_as_atom = Identifier.inspect_as_atom(mod)
|
||||
inspected_as_function = Identifier.inspect_as_function(name)
|
||||
"&#{inspected_as_atom}.#{inspected_as_function}/#{fun_info[:arity]}"
|
||||
|
||||
match?('elixir_compiler_' ++ _, Atom.to_charlist(mod)) ->
|
||||
if function_exported?(mod, :__RELATIVE__, 0) do
|
||||
"#Function<#{uniq(fun_info)} in file:#{mod.__RELATIVE__}>"
|
||||
else
|
||||
default_inspect(mod, fun_info)
|
||||
end
|
||||
|
||||
true ->
|
||||
default_inspect(mod, fun_info)
|
||||
end
|
||||
end
|
||||
|
||||
defp default_inspect(mod, fun_info) do
|
||||
inspected_as_atom = Identifier.inspect_as_atom(mod)
|
||||
extracted_name = extract_name(fun_info[:name])
|
||||
"#Function<#{uniq(fun_info)}/#{fun_info[:arity]} in #{inspected_as_atom}#{extracted_name}>"
|
||||
end
|
||||
|
||||
defp extract_name([]) do
|
||||
""
|
||||
end
|
||||
|
||||
defp extract_name(name) do
|
||||
case Identifier.extract_anonymous_fun_parent(name) do
|
||||
{name, arity} ->
|
||||
"." <> Identifier.inspect_as_function(name) <> "/" <> arity
|
||||
|
||||
:error ->
|
||||
"." <> Identifier.inspect_as_function(name)
|
||||
end
|
||||
end
|
||||
|
||||
defp uniq(fun_info) do
|
||||
Integer.to_string(fun_info[:new_index]) <> "." <> Integer.to_string(fun_info[:uniq])
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect, for: PID do
|
||||
def inspect(pid, _opts) do
|
||||
"#PID" <> IO.iodata_to_binary(:erlang.pid_to_list(pid))
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect, for: Port do
|
||||
def inspect(port, _opts) do
|
||||
IO.iodata_to_binary(:erlang.port_to_list(port))
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect, for: Reference do
|
||||
def inspect(ref, _opts) do
|
||||
'#Ref' ++ rest = :erlang.ref_to_list(ref)
|
||||
"#Reference" <> IO.iodata_to_binary(rest)
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Inspect, for: Any do
|
||||
defmacro __deriving__(module, struct, options) do
|
||||
fields =
|
||||
struct
|
||||
|> Map.drop([:__exception__, :__struct__])
|
||||
|> Map.keys()
|
||||
|
||||
only = Keyword.get(options, :only, fields)
|
||||
except = Keyword.get(options, :except, [])
|
||||
|
||||
filtered_fields =
|
||||
fields
|
||||
|> Enum.reject(&(&1 in except))
|
||||
|> Enum.filter(&(&1 in only))
|
||||
|
||||
inspect_module =
|
||||
if fields == only and except == [] do
|
||||
quote(do: Inspect.Map)
|
||||
else
|
||||
quote(do: Inspect.Any)
|
||||
end
|
||||
|
||||
quote do
|
||||
defimpl Inspect, for: unquote(module) do
|
||||
def inspect(struct, opts) do
|
||||
map = Map.take(struct, unquote(filtered_fields))
|
||||
name = Identifier.inspect_as_atom(unquote(module))
|
||||
unquote(inspect_module).inspect(map, name, opts)
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
def inspect(%module{} = struct, opts) do
|
||||
try do
|
||||
module.__struct__
|
||||
rescue
|
||||
_ -> Inspect.Map.inspect(struct, opts)
|
||||
else
|
||||
dunder ->
|
||||
if :maps.keys(dunder) == :maps.keys(struct) do
|
||||
pruned = :maps.remove(:__exception__, :maps.remove(:__struct__, struct))
|
||||
Inspect.Map.inspect(pruned, Identifier.inspect_as_atom(module), opts)
|
||||
else
|
||||
Inspect.Map.inspect(struct, opts)
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
def inspect(map, name, opts) do
|
||||
# Use the :limit option and an extra element to force
|
||||
# `container_doc/6` to append "...".
|
||||
opts = %{opts | limit: min(opts.limit, map_size(map))}
|
||||
map = :maps.to_list(map) ++ ["..."]
|
||||
|
||||
open = color("#" <> name <> "<", :map, opts)
|
||||
sep = color(",", :map, opts)
|
||||
close = color(">", :map, opts)
|
||||
|
||||
container_doc(open, map, close, opts, &Inspect.List.keyword/2, separator: sep, break: :strict)
|
||||
end
|
||||
end
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,424 +0,0 @@
|
||||
defmodule Integer do
|
||||
@moduledoc """
|
||||
Functions for working with integers.
|
||||
|
||||
Some functions that work on integers are found in `Kernel`:
|
||||
|
||||
* `abs/1`
|
||||
* `div/2`
|
||||
* `max/2`
|
||||
* `min/2`
|
||||
* `rem/2`
|
||||
|
||||
"""
|
||||
|
||||
import Bitwise
|
||||
|
||||
@doc """
|
||||
Determines if `integer` is odd.
|
||||
|
||||
Returns `true` if the given `integer` is an odd number,
|
||||
otherwise it returns `false`.
|
||||
|
||||
Allowed in guard clauses.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Integer.is_odd(5)
|
||||
true
|
||||
|
||||
iex> Integer.is_odd(6)
|
||||
false
|
||||
|
||||
iex> Integer.is_odd(-5)
|
||||
true
|
||||
|
||||
iex> Integer.is_odd(0)
|
||||
false
|
||||
|
||||
"""
|
||||
defguard is_odd(integer) when is_integer(integer) and (integer &&& 1) == 1
|
||||
|
||||
@doc """
|
||||
Determines if an `integer` is even.
|
||||
|
||||
Returns `true` if the given `integer` is an even number,
|
||||
otherwise it returns `false`.
|
||||
|
||||
Allowed in guard clauses.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Integer.is_even(10)
|
||||
true
|
||||
|
||||
iex> Integer.is_even(5)
|
||||
false
|
||||
|
||||
iex> Integer.is_even(-10)
|
||||
true
|
||||
|
||||
iex> Integer.is_even(0)
|
||||
true
|
||||
|
||||
"""
|
||||
defguard is_even(integer) when is_integer(integer) and (integer &&& 1) == 0
|
||||
|
||||
@doc """
|
||||
Computes the modulo remainder of an integer division.
|
||||
|
||||
`Integer.mod/2` uses floored division, which means that
|
||||
the result will always have the sign of the `divisor`.
|
||||
|
||||
Raises an `ArithmeticError` exception if one of the arguments is not an
|
||||
integer, or when the `divisor` is `0`.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Integer.mod(5, 2)
|
||||
1
|
||||
iex> Integer.mod(6, -4)
|
||||
-2
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec mod(integer, neg_integer | pos_integer) :: integer
|
||||
def mod(dividend, divisor) do
|
||||
remainder = rem(dividend, divisor)
|
||||
|
||||
if remainder * divisor < 0 do
|
||||
remainder + divisor
|
||||
else
|
||||
remainder
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Performs a floored integer division.
|
||||
|
||||
Raises an `ArithmeticError` exception if one of the arguments is not an
|
||||
integer, or when the `divisor` is `0`.
|
||||
|
||||
`Integer.floor_div/2` performs *floored* integer division. This means that
|
||||
the result is always rounded towards negative infinity.
|
||||
|
||||
If you want to perform truncated integer division (rounding towards zero),
|
||||
use `Kernel.div/2` instead.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Integer.floor_div(5, 2)
|
||||
2
|
||||
iex> Integer.floor_div(6, -4)
|
||||
-2
|
||||
iex> Integer.floor_div(-99, 2)
|
||||
-50
|
||||
|
||||
"""
|
||||
@doc since: "1.4.0"
|
||||
@spec floor_div(integer, neg_integer | pos_integer) :: integer
|
||||
def floor_div(dividend, divisor) do
|
||||
if dividend * divisor < 0 and rem(dividend, divisor) != 0 do
|
||||
div(dividend, divisor) - 1
|
||||
else
|
||||
div(dividend, divisor)
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the ordered digits for the given `integer`.
|
||||
|
||||
An optional `base` value may be provided representing the radix for the returned
|
||||
digits. This one must be an integer >= 2.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Integer.digits(123)
|
||||
[1, 2, 3]
|
||||
|
||||
iex> Integer.digits(170, 2)
|
||||
[1, 0, 1, 0, 1, 0, 1, 0]
|
||||
|
||||
iex> Integer.digits(-170, 2)
|
||||
[-1, 0, -1, 0, -1, 0, -1, 0]
|
||||
|
||||
"""
|
||||
@spec digits(integer, pos_integer) :: [integer, ...]
|
||||
def digits(integer, base \\ 10)
|
||||
when is_integer(integer) and is_integer(base) and base >= 2 do
|
||||
do_digits(integer, base, [])
|
||||
end
|
||||
|
||||
defp do_digits(integer, base, acc) when abs(integer) < base, do: [integer | acc]
|
||||
|
||||
defp do_digits(integer, base, acc),
|
||||
do: do_digits(div(integer, base), base, [rem(integer, base) | acc])
|
||||
|
||||
@doc """
|
||||
Returns the integer represented by the ordered `digits`.
|
||||
|
||||
An optional `base` value may be provided representing the radix for the `digits`.
|
||||
Base has to be an integer greater than or equal to `2`.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Integer.undigits([1, 2, 3])
|
||||
123
|
||||
|
||||
iex> Integer.undigits([1, 4], 16)
|
||||
20
|
||||
|
||||
iex> Integer.undigits([])
|
||||
0
|
||||
|
||||
"""
|
||||
@spec undigits([integer], pos_integer) :: integer
|
||||
def undigits(digits, base \\ 10) when is_list(digits) and is_integer(base) and base >= 2 do
|
||||
do_undigits(digits, base, 0)
|
||||
end
|
||||
|
||||
defp do_undigits([], _base, acc), do: acc
|
||||
|
||||
defp do_undigits([digit | _], base, _) when is_integer(digit) and digit >= base,
|
||||
do: raise(ArgumentError, "invalid digit #{digit} in base #{base}")
|
||||
|
||||
defp do_undigits([digit | tail], base, acc) when is_integer(digit),
|
||||
do: do_undigits(tail, base, acc * base + digit)
|
||||
|
||||
@doc """
|
||||
Parses a text representation of an integer.
|
||||
|
||||
An optional `base` to the corresponding integer can be provided.
|
||||
If `base` is not given, 10 will be used.
|
||||
|
||||
If successful, returns a tuple in the form of `{integer, remainder_of_binary}`.
|
||||
Otherwise `:error`.
|
||||
|
||||
Raises an error if `base` is less than 2 or more than 36.
|
||||
|
||||
If you want to convert a string-formatted integer directly to an integer,
|
||||
`String.to_integer/1` or `String.to_integer/2` can be used instead.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Integer.parse("34")
|
||||
{34, ""}
|
||||
|
||||
iex> Integer.parse("34.5")
|
||||
{34, ".5"}
|
||||
|
||||
iex> Integer.parse("three")
|
||||
:error
|
||||
|
||||
iex> Integer.parse("34", 10)
|
||||
{34, ""}
|
||||
|
||||
iex> Integer.parse("f4", 16)
|
||||
{244, ""}
|
||||
|
||||
iex> Integer.parse("Awww++", 36)
|
||||
{509216, "++"}
|
||||
|
||||
iex> Integer.parse("fab", 10)
|
||||
:error
|
||||
|
||||
iex> Integer.parse("a2", 38)
|
||||
** (ArgumentError) invalid base 38
|
||||
|
||||
"""
|
||||
@spec parse(binary, 2..36) :: {integer, binary} | :error
|
||||
def parse(binary, base \\ 10)
|
||||
|
||||
def parse(_binary, base) when base not in 2..36 do
|
||||
raise ArgumentError, "invalid base #{inspect(base)}"
|
||||
end
|
||||
|
||||
def parse(binary, base) do
|
||||
case count_digits(binary, base) do
|
||||
0 ->
|
||||
:error
|
||||
|
||||
count ->
|
||||
{digits, rem} = :erlang.split_binary(binary, count)
|
||||
{:erlang.binary_to_integer(digits, base), rem}
|
||||
end
|
||||
end
|
||||
|
||||
defp count_digits(<<sign, rest::binary>>, base) when sign in '+-' do
|
||||
case count_digits_nosign(rest, base, 1) do
|
||||
1 -> 0
|
||||
count -> count
|
||||
end
|
||||
end
|
||||
|
||||
defp count_digits(<<rest::binary>>, base) do
|
||||
count_digits_nosign(rest, base, 0)
|
||||
end
|
||||
|
||||
digits = [{?0..?9, -?0}, {?A..?Z, 10 - ?A}, {?a..?z, 10 - ?a}]
|
||||
|
||||
for {chars, diff} <- digits,
|
||||
char <- chars do
|
||||
digit = char + diff
|
||||
|
||||
defp count_digits_nosign(<<unquote(char), rest::binary>>, base, count)
|
||||
when base > unquote(digit) do
|
||||
count_digits_nosign(rest, base, count + 1)
|
||||
end
|
||||
end
|
||||
|
||||
defp count_digits_nosign(<<_::binary>>, _, count), do: count
|
||||
|
||||
# TODO: Remove Integer.to_string/1 once the minimum supported version is
|
||||
# Erlang/OTP 22, since it is covered by the now BIF Integer.to_string/2.
|
||||
# Please reapply commit 2622fd6b0aa419a983a899a1fbdb5deefba3d85d.
|
||||
@doc """
|
||||
Returns a binary which corresponds to the text representation
|
||||
of `integer`.
|
||||
|
||||
Inlined by the compiler.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Integer.to_string(123)
|
||||
"123"
|
||||
|
||||
iex> Integer.to_string(+456)
|
||||
"456"
|
||||
|
||||
iex> Integer.to_string(-789)
|
||||
"-789"
|
||||
|
||||
iex> Integer.to_string(0123)
|
||||
"123"
|
||||
|
||||
"""
|
||||
@spec to_string(integer) :: String.t()
|
||||
def to_string(integer) do
|
||||
:erlang.integer_to_binary(integer)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns a binary which corresponds to the text representation
|
||||
of `integer` in the given `base`.
|
||||
|
||||
`base` can be an integer between 2 and 36.
|
||||
|
||||
Inlined by the compiler.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Integer.to_string(100, 16)
|
||||
"64"
|
||||
|
||||
iex> Integer.to_string(-100, 16)
|
||||
"-64"
|
||||
|
||||
iex> Integer.to_string(882_681_651, 36)
|
||||
"ELIXIR"
|
||||
|
||||
"""
|
||||
@spec to_string(integer, 2..36) :: String.t()
|
||||
def to_string(integer, base) do
|
||||
:erlang.integer_to_binary(integer, base)
|
||||
end
|
||||
|
||||
# TODO: Remove Integer.to_charlist/1 once the minimum supported version is
|
||||
# Erlang/OTP 22, since it is covered by the now BIF Integer.to_charlist/2.
|
||||
# Please reapply commit 2622fd6b0aa419a983a899a1fbdb5deefba3d85d.
|
||||
@doc """
|
||||
Returns a charlist which corresponds to the text representation of the given `integer`.
|
||||
|
||||
Inlined by the compiler.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Integer.to_charlist(123)
|
||||
'123'
|
||||
|
||||
iex> Integer.to_charlist(+456)
|
||||
'456'
|
||||
|
||||
iex> Integer.to_charlist(-789)
|
||||
'-789'
|
||||
|
||||
iex> Integer.to_charlist(0123)
|
||||
'123'
|
||||
|
||||
"""
|
||||
@spec to_charlist(integer) :: charlist
|
||||
def to_charlist(integer) do
|
||||
:erlang.integer_to_list(integer)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns a charlist which corresponds to the text representation of `integer` in the given `base`.
|
||||
|
||||
`base` can be an integer between 2 and 36.
|
||||
|
||||
Inlined by the compiler.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Integer.to_charlist(100, 16)
|
||||
'64'
|
||||
|
||||
iex> Integer.to_charlist(-100, 16)
|
||||
'-64'
|
||||
|
||||
iex> Integer.to_charlist(882_681_651, 36)
|
||||
'ELIXIR'
|
||||
|
||||
"""
|
||||
@spec to_charlist(integer, 2..36) :: charlist
|
||||
def to_charlist(integer, base) do
|
||||
:erlang.integer_to_list(integer, base)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the greatest common divisor of the two given integers.
|
||||
|
||||
The greatest common divisor (GCD) of `integer1` and `integer2` is the largest positive
|
||||
integer that divides both `integer1` and `integer2` without leaving a remainder.
|
||||
|
||||
By convention, `gcd(0, 0)` returns `0`.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> Integer.gcd(2, 3)
|
||||
1
|
||||
|
||||
iex> Integer.gcd(8, 12)
|
||||
4
|
||||
|
||||
iex> Integer.gcd(8, -12)
|
||||
4
|
||||
|
||||
iex> Integer.gcd(10, 0)
|
||||
10
|
||||
|
||||
iex> Integer.gcd(7, 7)
|
||||
7
|
||||
|
||||
iex> Integer.gcd(0, 0)
|
||||
0
|
||||
|
||||
"""
|
||||
@doc since: "1.5.0"
|
||||
@spec gcd(integer, integer) :: non_neg_integer
|
||||
def gcd(integer1, integer2) when is_integer(integer1) and is_integer(integer2) do
|
||||
gcd_positive(abs(integer1), abs(integer2))
|
||||
end
|
||||
|
||||
defp gcd_positive(0, integer2), do: integer2
|
||||
defp gcd_positive(integer1, 0), do: integer1
|
||||
defp gcd_positive(integer1, integer2), do: gcd_positive(integer2, rem(integer1, integer2))
|
||||
|
||||
@doc false
|
||||
@deprecated "Use Integer.to_charlist/1 instead"
|
||||
def to_char_list(integer), do: Integer.to_charlist(integer)
|
||||
|
||||
@doc false
|
||||
@deprecated "Use Integer.to_charlist/2 instead"
|
||||
def to_char_list(integer, base), do: Integer.to_charlist(integer, base)
|
||||
end
|
||||
@@ -1,655 +0,0 @@
|
||||
defmodule IO do
|
||||
@moduledoc ~S"""
|
||||
Functions handling input/output (IO).
|
||||
|
||||
Many functions in this module expect an IO device as an argument.
|
||||
An IO device must be a PID or an atom representing a process.
|
||||
For convenience, Elixir provides `:stdio` and `:stderr` as
|
||||
shortcuts to Erlang's `:standard_io` and `:standard_error`.
|
||||
|
||||
The majority of the functions expect chardata. In case another type is given,
|
||||
functions will convert those types to string via the `String.Chars` protocol
|
||||
(as shown in typespecs). For more information on chardata, see the
|
||||
"IO data" section below.
|
||||
|
||||
## IO devices
|
||||
|
||||
An IO device may be an atom or a PID. In case it is an atom,
|
||||
the atom must be the name of a registered process. In addition,
|
||||
Elixir provides two shortcuts:
|
||||
|
||||
* `:stdio` - a shortcut for `:standard_io`, which maps to
|
||||
the current `Process.group_leader/0` in Erlang
|
||||
|
||||
* `:stderr` - a shortcut for the named process `:standard_error`
|
||||
provided in Erlang
|
||||
|
||||
IO devices maintain their position, which means subsequent calls to any
|
||||
reading or writing functions will start from the place where the device
|
||||
was last accessed. The position of files can be changed using the
|
||||
`:file.position/2` function.
|
||||
|
||||
## IO data
|
||||
|
||||
IO data is a data type that can be used as a more efficient alternative to binaries
|
||||
in certain situations.
|
||||
|
||||
A term of type **IO data** is a binary or a list containing bytes (integers in `0..255`)
|
||||
or nested IO data. The type is recursive. Let's see an example of one of
|
||||
the possible IO data representing the binary `"hello"`:
|
||||
|
||||
[?h, "el", ["l", [?o]]]
|
||||
|
||||
The built-in `t:iodata/0` type is defined in terms of `t:iolist/0`. An IO list is
|
||||
the same as IO data but it doesn't allow for a binary at the top level (but binaries
|
||||
are still allowed in the list itself).
|
||||
|
||||
### Use cases for IO data
|
||||
|
||||
IO data exists because often you need to do many append operations
|
||||
on smaller chunks of binaries in order to create a bigger binary. However, in
|
||||
Erlang and Elixir concatenating binaries will copy the concatenated binaries
|
||||
into a new binary.
|
||||
|
||||
def email(username, domain) do
|
||||
username <> "@" <> domain
|
||||
end
|
||||
|
||||
In this function, creating the email address will copy the `username` and `domain`
|
||||
binaries. Now imagine you want to use the resulting email inside another binary:
|
||||
|
||||
def welcome_message(name, username, domain) do
|
||||
"Welcome #{name}, your email is: #{email(username, domain)}"
|
||||
end
|
||||
|
||||
IO.puts(welcome_message("Meg", "meg", "example.com"))
|
||||
#=> "Welcome Meg, your email is: meg@example.com"
|
||||
|
||||
Every time you concatenate binaries or use interpolation (`#{}`) you are making
|
||||
copies of those binaries. However, in many cases you don't need the complete
|
||||
binary while you create it, but only at the end to print it out or send it
|
||||
somewhere. In such cases, you can construct the binary by creating IO data:
|
||||
|
||||
def email(username, domain) do
|
||||
[username, ?@, domain]
|
||||
end
|
||||
|
||||
def welcome_message(name, username, domain) do
|
||||
["Welcome ", name, ", your email is: ", email(username, domain)]
|
||||
end
|
||||
|
||||
IO.puts(welcome_message("Meg", "meg", "example.com"))
|
||||
#=> "Welcome Meg, your email is: meg@example.com"
|
||||
|
||||
Building IO data is cheaper than concatenating binaries. Concatenating multiple
|
||||
pieces of IO data just means putting them together inside a list since IO data
|
||||
can be arbitrarily nested, and that's a cheap and efficient operation. Most of
|
||||
the IO-based APIs, such as `:gen_tcp`, `IO`, etc, receive IO data and write it
|
||||
to the socket directly without converting it to binary.
|
||||
|
||||
One drawback of IO data is that you can't do things like pattern match on the
|
||||
first part of a piece of IO data like you can with a binary, because you usually
|
||||
don't know the shape of the IO data. In those cases, you may need to convert it
|
||||
to a binary by calling `iodata_to_binary/1`, which is reasonably efficient
|
||||
since it's implemented natively in C. Other functionality, like computing the
|
||||
length of IO data, can be computed directly on the iodata by calling `iodata_length/1`.
|
||||
|
||||
### Chardata
|
||||
|
||||
Erlang and Elixir also have the idea of `t:chardata/0`. Chardata is very
|
||||
similar to IO data: the only difference is that integers in IO data represent
|
||||
bytes while integers in chardata represent Unicode codepoints. Bytes
|
||||
(`t:byte/0`) are integers in the `0..255` range, while Unicode codepoints
|
||||
(`t:char/0`) are integers in the range `0..0x10FFFF`. The `IO` module provides
|
||||
the `chardata_to_string/1` function for chardata as the "counter-part" of the
|
||||
`iodata_to_binary/1` function for IO data.
|
||||
|
||||
If you try to use `iodata_to_binary/1` on chardata, it will result in an
|
||||
argument error. For example, let's try to put a codepoint that is not
|
||||
representable with one byte, like `?π`, inside IO data:
|
||||
|
||||
iex> IO.iodata_to_binary(["The symbol for pi is: ", ?π])
|
||||
** (ArgumentError) argument error
|
||||
|
||||
If we use chardata instead, it will work as expected:
|
||||
|
||||
iex> IO.chardata_to_string(["The symbol for pi is: ", ?π])
|
||||
"The symbol for pi is: π"
|
||||
|
||||
"""
|
||||
|
||||
@type device :: atom | pid
|
||||
@type nodata :: {:error, term} | :eof
|
||||
@type chardata :: String.t() | maybe_improper_list(char | chardata, String.t() | [])
|
||||
|
||||
defguardp is_iodata(data) when is_list(data) or is_binary(data)
|
||||
|
||||
@doc """
|
||||
Reads from the IO `device`.
|
||||
|
||||
The `device` is iterated by the given number of characters or line by line if
|
||||
`:line` is given.
|
||||
Alternatively, if `:all` is given, then whole `device` is returned.
|
||||
|
||||
It returns:
|
||||
|
||||
* `data` - the output characters
|
||||
|
||||
* `:eof` - end of file was encountered
|
||||
|
||||
* `{:error, reason}` - other (rare) error condition;
|
||||
for instance, `{:error, :estale}` if reading from an
|
||||
NFS volume
|
||||
|
||||
If `:all` is given, `:eof` is never returned, but an
|
||||
empty string in case the device has reached EOF.
|
||||
"""
|
||||
@spec read(device, :all | :line | non_neg_integer) :: chardata | nodata
|
||||
def read(device \\ :stdio, line_or_chars)
|
||||
|
||||
def read(device, :all) do
|
||||
do_read_all(map_dev(device), "")
|
||||
end
|
||||
|
||||
def read(device, :line) do
|
||||
:io.get_line(map_dev(device), '')
|
||||
end
|
||||
|
||||
def read(device, count) when is_integer(count) and count >= 0 do
|
||||
:io.get_chars(map_dev(device), '', count)
|
||||
end
|
||||
|
||||
defp do_read_all(mapped_dev, acc) do
|
||||
case :io.get_line(mapped_dev, "") do
|
||||
line when is_binary(line) -> do_read_all(mapped_dev, acc <> line)
|
||||
:eof -> acc
|
||||
other -> other
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Reads from the IO `device`. The operation is Unicode unsafe.
|
||||
|
||||
The `device` is iterated by the given number of bytes or line by line if
|
||||
`:line` is given.
|
||||
Alternatively, if `:all` is given, then whole `device` is returned.
|
||||
|
||||
It returns:
|
||||
|
||||
* `data` - the output bytes
|
||||
|
||||
* `:eof` - end of file was encountered
|
||||
|
||||
* `{:error, reason}` - other (rare) error condition;
|
||||
for instance, `{:error, :estale}` if reading from an
|
||||
NFS volume
|
||||
|
||||
If `:all` is given, `:eof` is never returned, but an
|
||||
empty string in case the device has reached EOF.
|
||||
|
||||
Note: do not use this function on IO devices in Unicode mode
|
||||
as it will return the wrong result.
|
||||
"""
|
||||
@spec binread(device, :all | :line | non_neg_integer) :: iodata | nodata
|
||||
def binread(device \\ :stdio, line_or_chars)
|
||||
|
||||
def binread(device, :all) do
|
||||
do_binread_all(map_dev(device), "")
|
||||
end
|
||||
|
||||
def binread(device, :line) do
|
||||
case :file.read_line(map_dev(device)) do
|
||||
{:ok, data} -> data
|
||||
other -> other
|
||||
end
|
||||
end
|
||||
|
||||
def binread(device, count) when is_integer(count) and count >= 0 do
|
||||
case :file.read(map_dev(device), count) do
|
||||
{:ok, data} -> data
|
||||
other -> other
|
||||
end
|
||||
end
|
||||
|
||||
@read_all_size 4096
|
||||
defp do_binread_all(mapped_dev, acc) do
|
||||
case :file.read(mapped_dev, @read_all_size) do
|
||||
{:ok, data} -> do_binread_all(mapped_dev, acc <> data)
|
||||
:eof -> acc
|
||||
other -> other
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Writes `chardata` to the given `device`.
|
||||
|
||||
By default, the `device` is the standard output.
|
||||
|
||||
## Examples
|
||||
|
||||
IO.write("sample")
|
||||
#=> sample
|
||||
|
||||
IO.write(:stderr, "error")
|
||||
#=> error
|
||||
|
||||
"""
|
||||
@spec write(device, chardata | String.Chars.t()) :: :ok
|
||||
def write(device \\ :stdio, chardata) do
|
||||
:io.put_chars(map_dev(device), to_chardata(chardata))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Writes `iodata` to the given `device`.
|
||||
|
||||
This operation is meant to be used with "raw" devices
|
||||
that are started without an encoding. The given `iodata`
|
||||
is written as is to the device, without conversion. For
|
||||
more information on IO data, see the "IO data" section in
|
||||
the module documentation.
|
||||
|
||||
Use `write/2` for devices with encoding.
|
||||
|
||||
Important: do **not** use this function on IO devices in
|
||||
Unicode mode as it will write the wrong data. In particular,
|
||||
the standard IO device is set to Unicode by default, so writing
|
||||
to stdio with this function will likely result in the wrong data
|
||||
being sent down the wire.
|
||||
"""
|
||||
@spec binwrite(device, iodata) :: :ok | {:error, term}
|
||||
def binwrite(device \\ :stdio, iodata) when is_iodata(iodata) do
|
||||
:file.write(map_dev(device), iodata)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Writes `item` to the given `device`, similar to `write/2`,
|
||||
but adds a newline at the end.
|
||||
|
||||
By default, the `device` is the standard output. It returns `:ok`
|
||||
if it succeeds.
|
||||
|
||||
## Examples
|
||||
|
||||
IO.puts("Hello World!")
|
||||
#=> Hello World!
|
||||
|
||||
IO.puts(:stderr, "error")
|
||||
#=> error
|
||||
|
||||
"""
|
||||
@spec puts(device, chardata | String.Chars.t()) :: :ok
|
||||
def puts(device \\ :stdio, item) do
|
||||
:io.put_chars(map_dev(device), [to_chardata(item), ?\n])
|
||||
end
|
||||
|
||||
@doc """
|
||||
Writes a `message` to stderr, along with the given `stacktrace`.
|
||||
|
||||
This function also notifies the compiler a warning was printed
|
||||
(in case --warnings-as-errors was enabled). It returns `:ok`
|
||||
if it succeeds.
|
||||
|
||||
An empty list can be passed to avoid stacktrace printing.
|
||||
|
||||
## Examples
|
||||
|
||||
stacktrace = [{MyApp, :main, 1, [file: 'my_app.ex', line: 4]}]
|
||||
IO.warn("variable bar is unused", stacktrace)
|
||||
#=> warning: variable bar is unused
|
||||
#=> my_app.ex:4: MyApp.main/1
|
||||
|
||||
"""
|
||||
@spec warn(chardata | String.Chars.t(), Exception.stacktrace()) :: :ok
|
||||
def warn(message, []) do
|
||||
message = [to_chardata(message), ?\n]
|
||||
:elixir_errors.io_warn(nil, nil, message, message)
|
||||
end
|
||||
|
||||
def warn(message, [{_, _, _, opts} | _] = stacktrace) do
|
||||
message = to_chardata(message)
|
||||
formatted_trace = Enum.map_join(stacktrace, "\n ", &Exception.format_stacktrace_entry(&1))
|
||||
line = opts[:line]
|
||||
file = opts[:file]
|
||||
|
||||
:elixir_errors.io_warn(
|
||||
line,
|
||||
file && List.to_string(file),
|
||||
message,
|
||||
[message, ?\n, " ", formatted_trace, ?\n]
|
||||
)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Writes a `message` to stderr, along with the current stacktrace.
|
||||
|
||||
It returns `:ok` if it succeeds.
|
||||
|
||||
## Examples
|
||||
|
||||
IO.warn("variable bar is unused")
|
||||
#=> warning: variable bar is unused
|
||||
#=> (iex) evaluator.ex:108: IEx.Evaluator.eval/4
|
||||
|
||||
"""
|
||||
@spec warn(chardata | String.Chars.t()) :: :ok
|
||||
def warn(message) do
|
||||
{:current_stacktrace, stacktrace} = Process.info(self(), :current_stacktrace)
|
||||
warn(message, Enum.drop(stacktrace, 2))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Inspects and writes the given `item` to the device.
|
||||
|
||||
It's important to note that it returns the given `item` unchanged.
|
||||
This makes it possible to "spy" on values by inserting an
|
||||
`IO.inspect/2` call almost anywhere in your code, for example,
|
||||
in the middle of a pipeline.
|
||||
|
||||
It enables pretty printing by default with width of
|
||||
80 characters. The width can be changed by explicitly
|
||||
passing the `:width` option.
|
||||
|
||||
The output can be decorated with a label, by providing the `:label`
|
||||
option to easily distinguish it from other `IO.inspect/2` calls.
|
||||
The label will be printed before the inspected `item`.
|
||||
|
||||
See `Inspect.Opts` for a full list of remaining formatting options.
|
||||
|
||||
## Examples
|
||||
|
||||
IO.inspect(<<0, 1, 2>>, width: 40)
|
||||
|
||||
Prints:
|
||||
|
||||
<<0, 1, 2>>
|
||||
|
||||
We can use the `:label` option to decorate the output:
|
||||
|
||||
IO.inspect(1..100, label: "a wonderful range")
|
||||
|
||||
Prints:
|
||||
|
||||
a wonderful range: 1..100
|
||||
|
||||
The `:label` option is especially useful with pipelines:
|
||||
|
||||
[1, 2, 3]
|
||||
|> IO.inspect(label: "before")
|
||||
|> Enum.map(&(&1 * 2))
|
||||
|> IO.inspect(label: "after")
|
||||
|> Enum.sum()
|
||||
|
||||
Prints:
|
||||
|
||||
before: [1, 2, 3]
|
||||
after: [2, 4, 6]
|
||||
|
||||
"""
|
||||
@spec inspect(item, keyword) :: item when item: var
|
||||
def inspect(item, opts \\ []) do
|
||||
inspect(:stdio, item, opts)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Inspects `item` according to the given options using the IO `device`.
|
||||
|
||||
See `inspect/2` for a full list of options.
|
||||
"""
|
||||
@spec inspect(device, item, keyword) :: item when item: var
|
||||
def inspect(device, item, opts) when is_list(opts) do
|
||||
label = if label = opts[:label], do: [to_chardata(label), ": "], else: []
|
||||
opts = struct(Inspect.Opts, opts)
|
||||
doc = Inspect.Algebra.group(Inspect.Algebra.to_doc(item, opts))
|
||||
chardata = Inspect.Algebra.format(doc, opts.width)
|
||||
puts(device, [label, chardata])
|
||||
item
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets a number of bytes from IO device `:stdio`.
|
||||
|
||||
If `:stdio` is a Unicode device, `count` implies
|
||||
the number of Unicode code points to be retrieved.
|
||||
Otherwise, `count` is the number of raw bytes to be retrieved.
|
||||
|
||||
See `IO.getn/3` for a description of return values.
|
||||
|
||||
"""
|
||||
@spec getn(chardata | String.Chars.t(), pos_integer) :: chardata | nodata
|
||||
@spec getn(device, chardata | String.Chars.t()) :: chardata | nodata
|
||||
def getn(prompt, count \\ 1)
|
||||
|
||||
def getn(prompt, count) when is_integer(count) and count > 0 do
|
||||
getn(:stdio, prompt, count)
|
||||
end
|
||||
|
||||
def getn(device, prompt) when not is_integer(prompt) do
|
||||
getn(device, prompt, 1)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Gets a number of bytes from the IO `device`.
|
||||
|
||||
If the IO `device` is a Unicode device, `count` implies
|
||||
the number of Unicode code points to be retrieved.
|
||||
Otherwise, `count` is the number of raw bytes to be retrieved.
|
||||
|
||||
It returns:
|
||||
|
||||
* `data` - the input characters
|
||||
|
||||
* `:eof` - end of file was encountered
|
||||
|
||||
* `{:error, reason}` - other (rare) error condition;
|
||||
for instance, `{:error, :estale}` if reading from an
|
||||
NFS volume
|
||||
|
||||
"""
|
||||
@spec getn(device, chardata | String.Chars.t(), pos_integer) :: chardata | nodata
|
||||
def getn(device, prompt, count) when is_integer(count) and count > 0 do
|
||||
:io.get_chars(map_dev(device), to_chardata(prompt), count)
|
||||
end
|
||||
|
||||
@doc ~S"""
|
||||
Reads a line from the IO `device`.
|
||||
|
||||
It returns:
|
||||
|
||||
* `data` - the characters in the line terminated
|
||||
by a line-feed (LF) or end of file (EOF)
|
||||
|
||||
* `:eof` - end of file was encountered
|
||||
|
||||
* `{:error, reason}` - other (rare) error condition;
|
||||
for instance, `{:error, :estale}` if reading from an
|
||||
NFS volume
|
||||
|
||||
## Examples
|
||||
|
||||
To display "What is your name?" as a prompt and await user input:
|
||||
|
||||
IO.gets("What is your name?\n")
|
||||
|
||||
"""
|
||||
@spec gets(device, chardata | String.Chars.t()) :: chardata | nodata
|
||||
def gets(device \\ :stdio, prompt) do
|
||||
:io.get_line(map_dev(device), to_chardata(prompt))
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts the IO `device` into an `IO.Stream`.
|
||||
|
||||
An `IO.Stream` implements both `Enumerable` and
|
||||
`Collectable`, allowing it to be used for both read
|
||||
and write.
|
||||
|
||||
The `device` is iterated by the given number of characters or line by line if
|
||||
`:line` is given.
|
||||
|
||||
This reads from the IO as UTF-8. Check out
|
||||
`IO.binstream/2` to handle the IO as a raw binary.
|
||||
|
||||
Note that an IO stream has side effects and every time
|
||||
you go over the stream you may get different results.
|
||||
|
||||
## Examples
|
||||
|
||||
Here is an example on how we mimic an echo server
|
||||
from the command line:
|
||||
|
||||
Enum.each(IO.stream(:stdio, :line), &IO.write(&1))
|
||||
|
||||
"""
|
||||
@spec stream(device, :line | pos_integer) :: Enumerable.t()
|
||||
def stream(device, line_or_codepoints)
|
||||
when line_or_codepoints == :line
|
||||
when is_integer(line_or_codepoints) and line_or_codepoints > 0 do
|
||||
IO.Stream.__build__(map_dev(device), false, line_or_codepoints)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts the IO `device` into an `IO.Stream`. The operation is Unicode unsafe.
|
||||
|
||||
An `IO.Stream` implements both `Enumerable` and
|
||||
`Collectable`, allowing it to be used for both read
|
||||
and write.
|
||||
|
||||
The `device` is iterated by the given number of bytes or line by line if
|
||||
`:line` is given.
|
||||
This reads from the IO device as a raw binary.
|
||||
|
||||
Note that an IO stream has side effects and every time
|
||||
you go over the stream you may get different results.
|
||||
|
||||
Finally, do not use this function on IO devices in Unicode
|
||||
mode as it will return the wrong result.
|
||||
|
||||
"""
|
||||
@spec binstream(device, :line | pos_integer) :: Enumerable.t()
|
||||
def binstream(device, line_or_bytes)
|
||||
when line_or_bytes == :line
|
||||
when is_integer(line_or_bytes) and line_or_bytes > 0 do
|
||||
IO.Stream.__build__(map_dev(device), true, line_or_bytes)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts chardata into a string.
|
||||
|
||||
For more information about chardata, see the ["Chardata"](#module-chardata)
|
||||
section in the module documentation.
|
||||
|
||||
In case the conversion fails, it raises an `UnicodeConversionError`.
|
||||
If a string is given, it returns the string itself.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> IO.chardata_to_string([0x00E6, 0x00DF])
|
||||
"æß"
|
||||
|
||||
iex> IO.chardata_to_string([0x0061, "bc"])
|
||||
"abc"
|
||||
|
||||
iex> IO.chardata_to_string("string")
|
||||
"string"
|
||||
|
||||
"""
|
||||
@spec chardata_to_string(chardata) :: String.t()
|
||||
def chardata_to_string(string) when is_binary(string) do
|
||||
string
|
||||
end
|
||||
|
||||
def chardata_to_string(list) when is_list(list) do
|
||||
List.to_string(list)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Converts IO data into a binary
|
||||
|
||||
The operation is Unicode unsafe.
|
||||
|
||||
Notice that this function treats integers in the given IO data as
|
||||
raw bytes and does not perform any kind of encoding conversion.
|
||||
If you want to convert from a charlist to a UTF-8-encoded string,
|
||||
use `chardata_to_string/1` instead. For more information about
|
||||
IO data and chardata, see the ["IO data"](#module-io-data) section in the
|
||||
module documentation.
|
||||
|
||||
If this function receives a binary, the same binary is returned.
|
||||
|
||||
Inlined by the compiler.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> bin1 = <<1, 2, 3>>
|
||||
iex> bin2 = <<4, 5>>
|
||||
iex> bin3 = <<6>>
|
||||
iex> IO.iodata_to_binary([bin1, 1, [2, 3, bin2], 4 | bin3])
|
||||
<<1, 2, 3, 1, 2, 3, 4, 5, 4, 6>>
|
||||
|
||||
iex> bin = <<1, 2, 3>>
|
||||
iex> IO.iodata_to_binary(bin)
|
||||
<<1, 2, 3>>
|
||||
|
||||
"""
|
||||
@spec iodata_to_binary(iodata) :: binary
|
||||
def iodata_to_binary(iodata) do
|
||||
:erlang.iolist_to_binary(iodata)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns the size of an IO data.
|
||||
|
||||
For more information about IO data, see the ["IO data"](#module-io-data)
|
||||
section in the module documentation.
|
||||
|
||||
Inlined by the compiler.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> IO.iodata_length([1, 2 | <<3, 4>>])
|
||||
4
|
||||
|
||||
"""
|
||||
@spec iodata_length(iodata) :: non_neg_integer
|
||||
def iodata_length(iodata) do
|
||||
:erlang.iolist_size(iodata)
|
||||
end
|
||||
|
||||
@doc false
|
||||
def each_stream(device, line_or_codepoints) do
|
||||
case read(device, line_or_codepoints) do
|
||||
:eof ->
|
||||
{:halt, device}
|
||||
|
||||
{:error, reason} ->
|
||||
raise IO.StreamError, reason: reason
|
||||
|
||||
data ->
|
||||
{[data], device}
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
def each_binstream(device, line_or_chars) do
|
||||
case binread(device, line_or_chars) do
|
||||
:eof ->
|
||||
{:halt, device}
|
||||
|
||||
{:error, reason} ->
|
||||
raise IO.StreamError, reason: reason
|
||||
|
||||
data ->
|
||||
{[data], device}
|
||||
end
|
||||
end
|
||||
|
||||
@compile {:inline, map_dev: 1, to_chardata: 1}
|
||||
|
||||
# Map the Elixir names for standard IO and error to Erlang names
|
||||
defp map_dev(:stdio), do: :standard_io
|
||||
defp map_dev(:stderr), do: :standard_error
|
||||
defp map_dev(other) when is_atom(other) or is_pid(other) or is_tuple(other), do: other
|
||||
|
||||
defp to_chardata(list) when is_list(list), do: list
|
||||
defp to_chardata(other), do: to_string(other)
|
||||
end
|
||||
@@ -1,280 +0,0 @@
|
||||
defmodule IO.ANSI.Sequence do
|
||||
@moduledoc false
|
||||
|
||||
defmacro defsequence(name, code, terminator \\ "m") do
|
||||
quote bind_quoted: [name: name, code: code, terminator: terminator] do
|
||||
def unquote(name)() do
|
||||
"\e[#{unquote(code)}#{unquote(terminator)}"
|
||||
end
|
||||
|
||||
defp format_sequence(unquote(name)) do
|
||||
unquote(name)()
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defmodule IO.ANSI do
|
||||
@moduledoc """
|
||||
Functionality to render ANSI escape sequences.
|
||||
|
||||
[ANSI escape sequences](https://en.wikipedia.org/wiki/ANSI_escape_code)
|
||||
are characters embedded in text used to control formatting, color, and
|
||||
other output options on video text terminals.
|
||||
"""
|
||||
|
||||
import IO.ANSI.Sequence
|
||||
|
||||
@type ansicode :: atom
|
||||
@type ansilist ::
|
||||
maybe_improper_list(char | ansicode | binary | ansilist, binary | ansicode | [])
|
||||
@type ansidata :: ansilist | ansicode | binary
|
||||
|
||||
@doc """
|
||||
Checks if ANSI coloring is supported and enabled on this machine.
|
||||
|
||||
This function simply reads the configuration value for
|
||||
`:ansi_enabled` in the `:elixir` application. The value is by
|
||||
default `false` unless Elixir can detect during startup that
|
||||
both `stdout` and `stderr` are terminals.
|
||||
"""
|
||||
@spec enabled? :: boolean
|
||||
def enabled? do
|
||||
Application.get_env(:elixir, :ansi_enabled, false)
|
||||
end
|
||||
|
||||
@doc "Sets foreground color."
|
||||
@spec color(0..255) :: String.t()
|
||||
def color(code) when code in 0..255, do: "\e[38;5;#{code}m"
|
||||
|
||||
@doc ~S"""
|
||||
Sets the foreground color from individual RGB values.
|
||||
|
||||
Valid values for each color are in the range 0 to 5.
|
||||
"""
|
||||
@spec color(0..5, 0..5, 0..5) :: String.t()
|
||||
def color(r, g, b) when r in 0..5 and g in 0..5 and b in 0..5 do
|
||||
color(16 + 36 * r + 6 * g + b)
|
||||
end
|
||||
|
||||
@doc "Sets background color."
|
||||
@spec color_background(0..255) :: String.t()
|
||||
def color_background(code) when code in 0..255, do: "\e[48;5;#{code}m"
|
||||
|
||||
@doc ~S"""
|
||||
Sets the background color from individual RGB values.
|
||||
|
||||
Valid values for each color are in the range 0 to 5.
|
||||
"""
|
||||
@spec color_background(0..5, 0..5, 0..5) :: String.t()
|
||||
def color_background(r, g, b) when r in 0..5 and g in 0..5 and b in 0..5 do
|
||||
color_background(16 + 36 * r + 6 * g + b)
|
||||
end
|
||||
|
||||
@doc "Resets all attributes."
|
||||
defsequence(:reset, 0)
|
||||
|
||||
@doc "Bright (increased intensity) or bold."
|
||||
defsequence(:bright, 1)
|
||||
|
||||
@doc "Faint (decreased intensity). Not widely supported."
|
||||
defsequence(:faint, 2)
|
||||
|
||||
@doc "Italic: on. Not widely supported. Sometimes treated as inverse."
|
||||
defsequence(:italic, 3)
|
||||
|
||||
@doc "Underline: single."
|
||||
defsequence(:underline, 4)
|
||||
|
||||
@doc "Blink: slow. Less than 150 per minute."
|
||||
defsequence(:blink_slow, 5)
|
||||
|
||||
@doc "Blink: rapid. MS-DOS ANSI.SYS; 150 per minute or more; not widely supported."
|
||||
defsequence(:blink_rapid, 6)
|
||||
|
||||
@doc "Image: negative. Swap foreground and background."
|
||||
defsequence(:inverse, 7)
|
||||
|
||||
@doc "Image: negative. Swap foreground and background."
|
||||
defsequence(:reverse, 7)
|
||||
|
||||
@doc "Conceal. Not widely supported."
|
||||
defsequence(:conceal, 8)
|
||||
|
||||
@doc "Crossed-out. Characters legible, but marked for deletion. Not widely supported."
|
||||
defsequence(:crossed_out, 9)
|
||||
|
||||
@doc "Sets primary (default) font."
|
||||
defsequence(:primary_font, 10)
|
||||
|
||||
for font_n <- [1, 2, 3, 4, 5, 6, 7, 8, 9] do
|
||||
@doc "Sets alternative font #{font_n}."
|
||||
defsequence(:"font_#{font_n}", font_n + 10)
|
||||
end
|
||||
|
||||
@doc "Normal color or intensity."
|
||||
defsequence(:normal, 22)
|
||||
|
||||
@doc "Not italic."
|
||||
defsequence(:not_italic, 23)
|
||||
|
||||
@doc "Underline: none."
|
||||
defsequence(:no_underline, 24)
|
||||
|
||||
@doc "Blink: off."
|
||||
defsequence(:blink_off, 25)
|
||||
|
||||
@doc "Image: positive. Normal foreground and background."
|
||||
defsequence(:inverse_off, 27)
|
||||
|
||||
@doc "Image: positive. Normal foreground and background."
|
||||
defsequence(:reverse_off, 27)
|
||||
|
||||
colors = [:black, :red, :green, :yellow, :blue, :magenta, :cyan, :white]
|
||||
|
||||
for {color, code} <- Enum.with_index(colors) do
|
||||
@doc "Sets foreground color to #{color}."
|
||||
defsequence(color, code + 30)
|
||||
|
||||
@doc "Sets foreground color to light #{color}."
|
||||
defsequence(:"light_#{color}", code + 90)
|
||||
|
||||
@doc "Sets background color to #{color}."
|
||||
defsequence(:"#{color}_background", code + 40)
|
||||
|
||||
@doc "Sets background color to light #{color}."
|
||||
defsequence(:"light_#{color}_background", code + 100)
|
||||
end
|
||||
|
||||
@doc "Default text color."
|
||||
defsequence(:default_color, 39)
|
||||
|
||||
@doc "Default background color."
|
||||
defsequence(:default_background, 49)
|
||||
|
||||
@doc "Framed."
|
||||
defsequence(:framed, 51)
|
||||
|
||||
@doc "Encircled."
|
||||
defsequence(:encircled, 52)
|
||||
|
||||
@doc "Overlined."
|
||||
defsequence(:overlined, 53)
|
||||
|
||||
@doc "Not framed or encircled."
|
||||
defsequence(:not_framed_encircled, 54)
|
||||
|
||||
@doc "Not overlined."
|
||||
defsequence(:not_overlined, 55)
|
||||
|
||||
@doc "Sends cursor home."
|
||||
defsequence(:home, "", "H")
|
||||
|
||||
@doc """
|
||||
Sends cursor to the absolute position specified by `line` and `column`.
|
||||
|
||||
Line `0` and column `0` would mean the top left corner.
|
||||
"""
|
||||
@spec cursor(non_neg_integer, non_neg_integer) :: String.t()
|
||||
def cursor(line, column)
|
||||
when is_integer(line) and line >= 0 and is_integer(column) and column >= 0 do
|
||||
"\e[#{line};#{column}H"
|
||||
end
|
||||
|
||||
@doc "Sends cursor `lines` up."
|
||||
@spec cursor_up(pos_integer) :: String.t()
|
||||
def cursor_up(lines \\ 1) when is_integer(lines) and lines >= 1, do: "\e[#{lines}A"
|
||||
|
||||
@doc "Sends cursor `lines` down."
|
||||
@spec cursor_down(pos_integer) :: String.t()
|
||||
def cursor_down(lines \\ 1) when is_integer(lines) and lines >= 1, do: "\e[#{lines}B"
|
||||
|
||||
@doc "Sends cursor `columns` to the right."
|
||||
@spec cursor_right(pos_integer) :: String.t()
|
||||
def cursor_right(columns \\ 1) when is_integer(columns) and columns >= 1, do: "\e[#{columns}C"
|
||||
|
||||
@doc "Sends cursor `columns` to the left."
|
||||
@spec cursor_left(pos_integer) :: String.t()
|
||||
def cursor_left(columns \\ 1) when is_integer(columns) and columns >= 1, do: "\e[#{columns}D"
|
||||
|
||||
@doc "Clears screen."
|
||||
defsequence(:clear, "2", "J")
|
||||
|
||||
@doc "Clears line."
|
||||
defsequence(:clear_line, "2", "K")
|
||||
|
||||
defp format_sequence(other) do
|
||||
raise ArgumentError, "invalid ANSI sequence specification: #{inspect(other)}"
|
||||
end
|
||||
|
||||
@doc ~S"""
|
||||
Formats a chardata-like argument by converting named ANSI sequences into actual
|
||||
ANSI codes.
|
||||
|
||||
The named sequences are represented by atoms.
|
||||
|
||||
It will also append an `IO.ANSI.reset/0` to the chardata when a conversion is
|
||||
performed. If you don't want this behaviour, use `format_fragment/2`.
|
||||
|
||||
An optional boolean parameter can be passed to enable or disable
|
||||
emitting actual ANSI codes. When `false`, no ANSI codes will emitted.
|
||||
By default checks if ANSI is enabled using the `enabled?/0` function.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> IO.ANSI.format(["Hello, ", :red, :bright, "world!"], true)
|
||||
[[[[[[], "Hello, "] | "\e[31m"] | "\e[1m"], "world!"] | "\e[0m"]
|
||||
|
||||
"""
|
||||
def format(chardata, emit? \\ enabled?()) when is_boolean(emit?) do
|
||||
do_format(chardata, [], [], emit?, :maybe)
|
||||
end
|
||||
|
||||
@doc ~S"""
|
||||
Formats a chardata-like argument by converting named ANSI sequences into actual
|
||||
ANSI codes.
|
||||
|
||||
The named sequences are represented by atoms.
|
||||
|
||||
An optional boolean parameter can be passed to enable or disable
|
||||
emitting actual ANSI codes. When `false`, no ANSI codes will be emitted.
|
||||
By default checks if ANSI is enabled using the `enabled?/0` function.
|
||||
|
||||
## Examples
|
||||
|
||||
iex> IO.ANSI.format_fragment([:bright, 'Word'], true)
|
||||
[[[[[[] | "\e[1m"], 87], 111], 114], 100]
|
||||
|
||||
"""
|
||||
def format_fragment(chardata, emit? \\ enabled?()) when is_boolean(emit?) do
|
||||
do_format(chardata, [], [], emit?, false)
|
||||
end
|
||||
|
||||
defp do_format([term | rest], rem, acc, emit?, append_reset) do
|
||||
do_format(term, [rest | rem], acc, emit?, append_reset)
|
||||
end
|
||||
|
||||
defp do_format(term, rem, acc, true, append_reset) when is_atom(term) do
|
||||
do_format([], rem, [acc | format_sequence(term)], true, !!append_reset)
|
||||
end
|
||||
|
||||
defp do_format(term, rem, acc, false, append_reset) when is_atom(term) do
|
||||
do_format([], rem, acc, false, append_reset)
|
||||
end
|
||||
|
||||
defp do_format(term, rem, acc, emit?, append_reset) when not is_list(term) do
|
||||
do_format([], rem, [acc, term], emit?, append_reset)
|
||||
end
|
||||
|
||||
defp do_format([], [next | rest], acc, emit?, append_reset) do
|
||||
do_format(next, rest, acc, emit?, append_reset)
|
||||
end
|
||||
|
||||
defp do_format([], [], acc, true, true) do
|
||||
[acc | IO.ANSI.reset()]
|
||||
end
|
||||
|
||||
defp do_format([], [], acc, _emit?, _append_reset) do
|
||||
acc
|
||||
end
|
||||
end
|
||||
@@ -1,664 +0,0 @@
|
||||
defmodule IO.ANSI.Docs do
|
||||
@moduledoc false
|
||||
|
||||
@bullets [?*, ?-, ?+]
|
||||
@spaces [" ", "\n", "\t"]
|
||||
|
||||
@doc """
|
||||
The default options used by this module.
|
||||
|
||||
The supported keys are:
|
||||
|
||||
* `:enabled` - toggles coloring on and off (true)
|
||||
* `:doc_bold` - bold text (bright)
|
||||
* `:doc_code` - code blocks (cyan)
|
||||
* `:doc_headings` - h1, h2, h3, h4, h5, h6 headings (yellow)
|
||||
* `:doc_metadata` - documentation metadata keys (yellow)
|
||||
* `:doc_inline_code` - inline code (cyan)
|
||||
* `:doc_table_heading` - the style for table headings
|
||||
* `:doc_title` - top level heading (reverse, yellow)
|
||||
* `:doc_underline` - underlined text (underline)
|
||||
* `:width` - the width to format the text (80)
|
||||
|
||||
Values for the color settings are strings with
|
||||
comma-separated ANSI values.
|
||||
"""
|
||||
@spec default_options() :: keyword
|
||||
def default_options do
|
||||
[
|
||||
enabled: true,
|
||||
doc_bold: [:bright],
|
||||
doc_code: [:cyan],
|
||||
doc_headings: [:yellow],
|
||||
doc_metadata: [:yellow],
|
||||
doc_inline_code: [:cyan],
|
||||
doc_table_heading: [:reverse],
|
||||
doc_title: [:reverse, :yellow],
|
||||
doc_underline: [:underline],
|
||||
width: 80
|
||||
]
|
||||
end
|
||||
|
||||
@doc """
|
||||
Prints the head of the documentation (i.e. the function signature).
|
||||
|
||||
See `default_options/0` for docs on the supported options.
|
||||
"""
|
||||
@spec print_heading(String.t(), keyword) :: :ok
|
||||
def print_heading(heading, options \\ []) do
|
||||
IO.puts(IO.ANSI.reset())
|
||||
options = Keyword.merge(default_options(), options)
|
||||
width = options[:width]
|
||||
padding = div(width + String.length(heading), 2)
|
||||
heading = heading |> String.pad_leading(padding) |> String.pad_trailing(width)
|
||||
write(:doc_title, heading, options)
|
||||
newline_after_block()
|
||||
end
|
||||
|
||||
@doc """
|
||||
Prints documentation metadata (only `delegate_to`, `deprecated`, `guard`, and `since` for now).
|
||||
|
||||
See `default_options/0` for docs on the supported options.
|
||||
"""
|
||||
@spec print_metadata(map, keyword) :: :ok
|
||||
def print_metadata(metadata, options \\ []) when is_map(metadata) do
|
||||
options = Keyword.merge(default_options(), options)
|
||||
print_each_metadata(metadata, options) && IO.write("\n")
|
||||
end
|
||||
|
||||
@metadata_filter [:deprecated, :guard, :since]
|
||||
|
||||
defp print_each_metadata(metadata, options) do
|
||||
Enum.reduce(metadata, false, fn
|
||||
{key, value}, _printed when is_binary(value) and key in @metadata_filter ->
|
||||
label = metadata_label(key, options)
|
||||
indent = String.duplicate(" ", length_without_escape(label, 0) + 1)
|
||||
write_with_wrap([label | String.split(value, @spaces)], options[:width], indent, true)
|
||||
|
||||
{key, value}, _printed when is_boolean(value) and key in @metadata_filter ->
|
||||
IO.puts([metadata_label(key, options), ' ', to_string(value)])
|
||||
|
||||
{:delegate_to, {m, f, a}}, _printed ->
|
||||
label = metadata_label(:delegate_to, options)
|
||||
IO.puts([label, ' ', Exception.format_mfa(m, f, a)])
|
||||
|
||||
_metadata, printed ->
|
||||
printed
|
||||
end)
|
||||
end
|
||||
|
||||
defp metadata_label(key, options) do
|
||||
if options[:enabled] do
|
||||
"#{color(:doc_metadata, options)}#{key}:#{IO.ANSI.reset()}"
|
||||
else
|
||||
"#{key}:"
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Prints the documentation body.
|
||||
|
||||
In addition to the printing string, takes a set of `options`
|
||||
defined in `default_options/0`.
|
||||
"""
|
||||
@spec print(String.t(), keyword) :: :ok
|
||||
def print(doc, options \\ []) do
|
||||
options = Keyword.merge(default_options(), options)
|
||||
|
||||
doc
|
||||
|> String.split(["\r\n", "\n"], trim: false)
|
||||
|> Enum.map(&String.trim_trailing/1)
|
||||
|> process([], "", options)
|
||||
end
|
||||
|
||||
defp process([], text, indent, options) do
|
||||
write_text(text, indent, options)
|
||||
end
|
||||
|
||||
defp process(["# " <> _ = heading | rest], text, indent, options) do
|
||||
write_heading(heading, rest, text, indent, options)
|
||||
end
|
||||
|
||||
defp process(["## " <> _ = heading | rest], text, indent, options) do
|
||||
write_heading(heading, rest, text, indent, options)
|
||||
end
|
||||
|
||||
defp process(["### " <> _ = heading | rest], text, indent, options) do
|
||||
write_heading(heading, rest, text, indent, options)
|
||||
end
|
||||
|
||||
defp process(["#### " <> _ = heading | rest], text, indent, options) do
|
||||
write_heading(heading, rest, text, indent, options)
|
||||
end
|
||||
|
||||
defp process(["##### " <> _ = heading | rest], text, indent, options) do
|
||||
write_heading(heading, rest, text, indent, options)
|
||||
end
|
||||
|
||||
defp process(["###### " <> _ = heading | rest], text, indent, options) do
|
||||
write_heading(heading, rest, text, indent, options)
|
||||
end
|
||||
|
||||
defp process(["" | rest], text, indent, options) do
|
||||
write_text(text, indent, options)
|
||||
process(rest, [], indent, options)
|
||||
end
|
||||
|
||||
defp process([" " <> line | rest], text, indent, options) do
|
||||
write_text(text, indent, options)
|
||||
process_code(rest, [line], indent, options)
|
||||
end
|
||||
|
||||
defp process(["```" <> _line | rest], text, indent, options) do
|
||||
process_fenced_code_block(rest, text, indent, options, _delimiter = "```")
|
||||
end
|
||||
|
||||
defp process(["~~~" <> _line | rest], text, indent, options) do
|
||||
process_fenced_code_block(rest, text, indent, options, _delimiter = "~~~")
|
||||
end
|
||||
|
||||
defp process(all = [line | rest], text, indent, options) do
|
||||
{stripped, count} = strip_spaces(line, 0, :infinity)
|
||||
|
||||
cond do
|
||||
link_label?(stripped, count) ->
|
||||
write_text([line], indent, options, true)
|
||||
process(rest, text, indent, options)
|
||||
|
||||
table_line?(stripped) and rest != [] and table_line?(hd(rest)) ->
|
||||
write_text(text, indent, options)
|
||||
process_table(all, indent, options)
|
||||
|
||||
true ->
|
||||
process_rest(stripped, rest, count, text, indent, options)
|
||||
end
|
||||
end
|
||||
|
||||
## Headings
|
||||
|
||||
defp write_heading(heading, rest, text, indent, options) do
|
||||
write_text(text, indent, options)
|
||||
write(:doc_headings, heading, options)
|
||||
newline_after_block()
|
||||
process(rest, [], "", options)
|
||||
end
|
||||
|
||||
## Lists
|
||||
|
||||
defp process_rest(stripped, rest, count, text, indent, options) do
|
||||
case stripped do
|
||||
<<bullet, ?\s, item::binary>> when bullet in @bullets ->
|
||||
write_text(text, indent, options)
|
||||
process_list("• ", item, rest, count, indent, options)
|
||||
|
||||
<<d1, ?., ?\s, item::binary>> when d1 in ?0..?9 ->
|
||||
write_text(text, indent, options)
|
||||
process_list(<<d1, ?., ?\s>>, item, rest, count, indent, options)
|
||||
|
||||
<<d1, d2, ?., ?\s, item::binary>> when d1 in ?0..?9 and d2 in ?0..?9 ->
|
||||
write_text(text, indent, options)
|
||||
process_list(<<d1, d2, ?., ?\s>>, item, rest, count, indent, options)
|
||||
|
||||
_ ->
|
||||
process(rest, [stripped | text], indent, options)
|
||||
end
|
||||
end
|
||||
|
||||
defp process_list(entry, line, rest, count, indent, options) do
|
||||
# The first list always win some extra padding
|
||||
entry = if indent == "", do: " " <> entry, else: entry
|
||||
new_indent = indent <> String.duplicate(" ", String.length(entry))
|
||||
|
||||
{contents, rest, done} = process_list_next(rest, count, byte_size(new_indent), [])
|
||||
process(contents, [indent <> entry <> line, :no_wrap], new_indent, options)
|
||||
|
||||
if done, do: newline_after_block()
|
||||
process(rest, [], indent, options)
|
||||
end
|
||||
|
||||
defp process_list_next([line | rest], count, max, acc) do
|
||||
{stripped, next_count} = strip_spaces(line, 0, max)
|
||||
|
||||
case process_list_next_kind(stripped, rest, count, next_count) do
|
||||
:next -> process_list_next(rest, count, max, [stripped | acc])
|
||||
:done -> {Enum.reverse(acc), [line | rest], true}
|
||||
:list -> {Enum.reverse(acc), [line | rest], false}
|
||||
end
|
||||
end
|
||||
|
||||
defp process_list_next([], _count, _max, acc) do
|
||||
{Enum.reverse(acc), [], true}
|
||||
end
|
||||
|
||||
defp process_list_next_kind(stripped, rest, count, next_count) do
|
||||
case {stripped, rest} do
|
||||
{<<bullet, ?\s, _::binary>>, _} when bullet in @bullets and next_count <= count ->
|
||||
:list
|
||||
|
||||
{<<d1, ?., ?\s, _::binary>>, _} when d1 in ?0..?9 and next_count <= count ->
|
||||
:list
|
||||
|
||||
{<<d1, d2, ?., ?\s, _::binary>>, _}
|
||||
when d1 in ?0..?9 and d2 in ?0..?9 and next_count <= count ->
|
||||
:list
|
||||
|
||||
{"", [" " <> _ | _]} ->
|
||||
:next
|
||||
|
||||
{"", _} ->
|
||||
:done
|
||||
|
||||
_ ->
|
||||
:next
|
||||
end
|
||||
end
|
||||
|
||||
## Text
|
||||
|
||||
defp write_text(text, indent, options) do
|
||||
case Enum.reverse(text) do
|
||||
[:no_wrap | rest] -> write_text(rest, indent, options, true)
|
||||
rest -> write_text(rest, indent, options, false)
|
||||
end
|
||||
end
|
||||
|
||||
defp write_text([], _indent, _options, _no_wrap) do
|
||||
:ok
|
||||
end
|
||||
|
||||
defp write_text(lines, indent, options, no_wrap) do
|
||||
lines
|
||||
|> Enum.join(" ")
|
||||
|> handle_links
|
||||
|> handle_inline(options)
|
||||
|> String.split(@spaces)
|
||||
|> write_with_wrap(options[:width] - byte_size(indent), indent, no_wrap)
|
||||
|
||||
unless no_wrap, do: newline_after_block()
|
||||
end
|
||||
|
||||
## Code blocks
|
||||
|
||||
defp process_code([], code, indent, options) do
|
||||
write_code(code, indent, options)
|
||||
end
|
||||
|
||||
# Blank line between code blocks
|
||||
defp process_code(["", " " <> line | rest], code, indent, options) do
|
||||
process_code(rest, [line, "" | code], indent, options)
|
||||
end
|
||||
|
||||
defp process_code([" " <> line | rest], code, indent, options) do
|
||||
process_code(rest, [line | code], indent, options)
|
||||
end
|
||||
|
||||
defp process_code(rest, code, indent, options) do
|
||||
write_code(code, indent, options)
|
||||
process(rest, [], indent, options)
|
||||
end
|
||||
|
||||
defp process_fenced_code_block(rest, text, indent, options, delimiter) do
|
||||
write_text(text, indent, options)
|
||||
process_fenced_code(rest, [], indent, options, delimiter)
|
||||
end
|
||||
|
||||
defp process_fenced_code([], code, indent, options, _delimiter) do
|
||||
write_code(code, indent, options)
|
||||
end
|
||||
|
||||
defp process_fenced_code([line | rest], code, indent, options, delimiter) do
|
||||
if line === delimiter do
|
||||
process_code(rest, code, indent, options)
|
||||
else
|
||||
process_fenced_code(rest, [line | code], indent, options, delimiter)
|
||||
end
|
||||
end
|
||||
|
||||
defp write_code(code, indent, options) do
|
||||
write(:doc_code, "#{indent} #{Enum.join(Enum.reverse(code), "\n#{indent} ")}", options)
|
||||
newline_after_block()
|
||||
end
|
||||
|
||||
## Tables
|
||||
|
||||
defp process_table(lines, indent, options) do
|
||||
{table, rest} = Enum.split_while(lines, &table_line?/1)
|
||||
table_lines(table, options)
|
||||
newline_after_block()
|
||||
process(rest, [], indent, options)
|
||||
end
|
||||
|
||||
defp table_lines(lines, options) do
|
||||
lines = Enum.map(lines, &split_into_columns(&1, options))
|
||||
count = Enum.map(lines, &length/1) |> Enum.max()
|
||||
lines = Enum.map(lines, &pad_to_number_of_columns(&1, count))
|
||||
|
||||
widths =
|
||||
for line <- lines do
|
||||
if table_header?(line) do
|
||||
for _ <- line, do: 0
|
||||
else
|
||||
for {_col, length} <- line, do: length
|
||||
end
|
||||
end
|
||||
|
||||
col_widths = Enum.reduce(widths, List.duplicate(0, count), &max_column_widths/2)
|
||||
render_table(lines, col_widths, options)
|
||||
end
|
||||
|
||||
defp split_into_columns(line, options) do
|
||||
line
|
||||
|> String.trim("|")
|
||||
|> String.trim()
|
||||
|> String.split(" | ")
|
||||
|> Enum.map(&render_column(&1, options))
|
||||
end
|
||||
|
||||
defp render_column(col, options) do
|
||||
col =
|
||||
col
|
||||
|> String.replace("\\\|", "|")
|
||||
|> String.trim()
|
||||
|> handle_links
|
||||
|> handle_inline(options)
|
||||
|
||||
{col, length_without_escape(col, 0)}
|
||||
end
|
||||
|
||||
defp pad_to_number_of_columns(cols, col_count),
|
||||
do: cols ++ List.duplicate({"", 0}, col_count - length(cols))
|
||||
|
||||
defp max_column_widths(cols, widths),
|
||||
do: Enum.zip(cols, widths) |> Enum.map(fn {a, b} -> max(a, b) end)
|
||||
|
||||
# If second line is heading separator, use the heading style on the first
|
||||
defp render_table([first, second | rest], widths, options) do
|
||||
combined = Enum.zip(first, widths)
|
||||
|
||||
if table_header?(second) do
|
||||
alignments = Enum.map(second, &column_alignment/1)
|
||||
options = Keyword.put_new(options, :alignments, alignments)
|
||||
draw_table_row(combined, options, :heading)
|
||||
render_table(rest, widths, options)
|
||||
else
|
||||
draw_table_row(combined, options)
|
||||
render_table([second | rest], widths, options)
|
||||
end
|
||||
end
|
||||
|
||||
defp render_table([first | rest], widths, options) do
|
||||
combined = Enum.zip(first, widths)
|
||||
draw_table_row(combined, options)
|
||||
render_table(rest, widths, options)
|
||||
end
|
||||
|
||||
defp render_table([], _, _), do: nil
|
||||
|
||||
defp column_alignment({line, _}) do
|
||||
cond do
|
||||
String.starts_with?(line, ":") and String.ends_with?(line, ":") -> :center
|
||||
String.ends_with?(line, ":") -> :right
|
||||
true -> :left
|
||||
end
|
||||
end
|
||||
|
||||
defp table_header?(line) do
|
||||
Enum.all?(line, fn {col, _} -> table_header_column?(col) end)
|
||||
end
|
||||
|
||||
defp table_header_column?(":" <> rest), do: table_header_contents?(rest)
|
||||
defp table_header_column?(col), do: table_header_contents?(col)
|
||||
|
||||
defp table_header_contents?("-" <> rest), do: table_header_contents?(rest)
|
||||
defp table_header_contents?(":"), do: true
|
||||
defp table_header_contents?(""), do: true
|
||||
defp table_header_contents?(_), do: false
|
||||
|
||||
defp draw_table_row(cols_and_widths, options, heading \\ false) do
|
||||
default_alignments = List.duplicate(:left, length(cols_and_widths))
|
||||
alignments = Keyword.get(options, :alignments, default_alignments)
|
||||
|
||||
columns =
|
||||
cols_and_widths
|
||||
|> Enum.zip(alignments)
|
||||
|> Enum.map_join(" | ", &generate_table_cell/1)
|
||||
|
||||
if heading do
|
||||
write(:doc_table_heading, columns, options)
|
||||
else
|
||||
IO.puts(columns)
|
||||
end
|
||||
end
|
||||
|
||||
defp generate_table_cell({{{col, length}, width}, :center}) do
|
||||
ansi_diff = byte_size(col) - length
|
||||
width = width + ansi_diff
|
||||
|
||||
col
|
||||
|> String.pad_leading(div(width, 2) - div(length, 2) + length)
|
||||
|> String.pad_trailing(width + 1 - rem(width, 2))
|
||||
end
|
||||
|
||||
defp generate_table_cell({{{col, length}, width}, :right}) do
|
||||
ansi_diff = byte_size(col) - length
|
||||
String.pad_leading(col, width + ansi_diff)
|
||||
end
|
||||
|
||||
defp generate_table_cell({{{col, length}, width}, :left}) do
|
||||
ansi_diff = byte_size(col) - length
|
||||
String.pad_trailing(col, width + ansi_diff)
|
||||
end
|
||||
|
||||
defp table_line?(line) do
|
||||
line =~ " | "
|
||||
end
|
||||
|
||||
## Helpers
|
||||
|
||||
defp link_label?("[" <> rest, count) when count <= 3, do: link_label?(rest)
|
||||
defp link_label?(_, _), do: false
|
||||
|
||||
defp link_label?("]: " <> _), do: true
|
||||
defp link_label?("]" <> _), do: false
|
||||
defp link_label?(""), do: false
|
||||
defp link_label?(<<_>> <> rest), do: link_label?(rest)
|
||||
|
||||
defp strip_spaces(" " <> line, acc, max) when acc < max, do: strip_spaces(line, acc + 1, max)
|
||||
defp strip_spaces(rest, acc, _max), do: {rest, acc}
|
||||
|
||||
defp write(style, string, options) do
|
||||
IO.puts([color(style, options), string, IO.ANSI.reset()])
|
||||
end
|
||||
|
||||
defp write_with_wrap([], _available, _indent, _first) do
|
||||
:ok
|
||||
end
|
||||
|
||||
defp write_with_wrap(words, available, indent, first) do
|
||||
{words, rest} = take_words(words, available, [])
|
||||
IO.puts(if(first, do: "", else: indent) <> Enum.join(words, " "))
|
||||
write_with_wrap(rest, available, indent, false)
|
||||
end
|
||||
|
||||
defp take_words([word | words], available, acc) do
|
||||
available = available - length_without_escape(word, 0)
|
||||
|
||||
cond do
|
||||
# It fits, take one for space and continue decreasing
|
||||
available > 0 ->
|
||||
take_words(words, available - 1, [word | acc])
|
||||
|
||||
# No space but we got no words
|
||||
acc == [] ->
|
||||
{[word], words}
|
||||
|
||||
# Otherwise
|
||||
true ->
|
||||
{Enum.reverse(acc), [word | words]}
|
||||
end
|
||||
end
|
||||
|
||||
defp take_words([], _available, acc) do
|
||||
{Enum.reverse(acc), []}
|
||||
end
|
||||
|
||||
defp length_without_escape(<<?\e, ?[, _, _, ?m>> <> rest, count) do
|
||||
length_without_escape(rest, count)
|
||||
end
|
||||
|
||||
defp length_without_escape(<<?\e, ?[, _, ?m>> <> rest, count) do
|
||||
length_without_escape(rest, count)
|
||||
end
|
||||
|
||||
defp length_without_escape(rest, count) do
|
||||
case String.next_grapheme(rest) do
|
||||
{_, rest} -> length_without_escape(rest, count + 1)
|
||||
nil -> count
|
||||
end
|
||||
end
|
||||
|
||||
defp handle_links(text) do
|
||||
text
|
||||
|> remove_square_brackets_in_link
|
||||
|> escape_underlines_in_link
|
||||
end
|
||||
|
||||
defp escape_underlines_in_link(text) do
|
||||
# Regular expression adapted from https://tools.ietf.org/html/rfc3986#appendix-B
|
||||
Regex.replace(~r{[a-z][a-z0-9\+\-\.]*://\S*}i, text, &String.replace(&1, "_", "\\_"))
|
||||
end
|
||||
|
||||
defp remove_square_brackets_in_link(text) do
|
||||
Regex.replace(~r{\[([^\]]*?)\]\((.*?)\)}, text, "\\1 (\\2)")
|
||||
end
|
||||
|
||||
# We have four entries: **, *, _ and `.
|
||||
#
|
||||
# The first three behave the same while the last one is simpler
|
||||
# when it comes to delimiters as it ignores spaces and escape
|
||||
# characters. But, since the first has two characters, we need to
|
||||
# handle 3 cases:
|
||||
#
|
||||
# 1. **
|
||||
# 2. _ and *
|
||||
# 3. `
|
||||
#
|
||||
# Where the first two should have the same code but match differently.
|
||||
@single [?_, ?*]
|
||||
|
||||
# Characters that can mark the beginning or the end of a word.
|
||||
# Only support the most common ones at this moment.
|
||||
@delimiters [?\s, ?', ?", ?!, ?@, ?#, ?$, ?%, ?^, ?&] ++
|
||||
[?-, ?+, ?(, ?), ?[, ?], ?{, ?}, ?<, ?>, ?.]
|
||||
|
||||
# Inline start
|
||||
|
||||
defp handle_inline(<<?*, ?*, rest::binary>>, options) do
|
||||
handle_inline(rest, ?d, ["**"], [], options)
|
||||
end
|
||||
|
||||
defp handle_inline(<<mark, rest::binary>>, options) when mark in @single do
|
||||
handle_inline(rest, mark, [<<mark>>], [], options)
|
||||
end
|
||||
|
||||
defp handle_inline(rest, options) do
|
||||
handle_inline(rest, nil, [], [], options)
|
||||
end
|
||||
|
||||
# Inline delimiters
|
||||
|
||||
defp handle_inline(<<delimiter, ?*, ?*, rest::binary>>, nil, buffer, acc, options)
|
||||
when rest != "" and delimiter in @delimiters do
|
||||
handle_inline(rest, ?d, ["**"], [delimiter, Enum.reverse(buffer) | acc], options)
|
||||
end
|
||||
|
||||
defp handle_inline(<<delimiter, mark, rest::binary>>, nil, buffer, acc, options)
|
||||
when rest != "" and delimiter in @delimiters and mark in @single do
|
||||
handle_inline(rest, mark, [<<mark>>], [delimiter, Enum.reverse(buffer) | acc], options)
|
||||
end
|
||||
|
||||
defp handle_inline(<<?`, rest::binary>>, nil, buffer, acc, options)
|
||||
when rest != "" do
|
||||
handle_inline(rest, ?`, ["`"], [Enum.reverse(buffer) | acc], options)
|
||||
end
|
||||
|
||||
# Clauses for handling escape
|
||||
|
||||
defp handle_inline(<<?\\, ?\\, ?*, ?*, rest::binary>>, nil, buffer, acc, options)
|
||||
when rest != "" do
|
||||
handle_inline(rest, ?d, ["**"], [?\\, Enum.reverse(buffer) | acc], options)
|
||||
end
|
||||
|
||||
defp handle_inline(<<?\\, ?\\, mark, rest::binary>>, nil, buffer, acc, options)
|
||||
when rest != "" and mark in @single do
|
||||
handle_inline(rest, mark, [<<mark>>], [?\\, Enum.reverse(buffer) | acc], options)
|
||||
end
|
||||
|
||||
defp handle_inline(<<?\\, ?\\, rest::binary>>, limit, buffer, acc, options) do
|
||||
handle_inline(rest, limit, [?\\ | buffer], acc, options)
|
||||
end
|
||||
|
||||
# An escape is not valid inside `
|
||||
defp handle_inline(<<?\\, mark, rest::binary>>, limit, buffer, acc, options) when limit != ?` do
|
||||
handle_inline(rest, limit, [mark | buffer], acc, options)
|
||||
end
|
||||
|
||||
# Inline end
|
||||
|
||||
defp handle_inline(<<?*, ?*, delimiter, rest::binary>>, ?d, buffer, acc, options)
|
||||
when delimiter in @delimiters do
|
||||
inline_buffer = inline_buffer(buffer, options)
|
||||
handle_inline(<<delimiter, rest::binary>>, nil, [], [inline_buffer | acc], options)
|
||||
end
|
||||
|
||||
defp handle_inline(<<mark, delimiter, rest::binary>>, mark, buffer, acc, options)
|
||||
when delimiter in @delimiters and mark in @single do
|
||||
inline_buffer = inline_buffer(buffer, options)
|
||||
handle_inline(<<delimiter, rest::binary>>, nil, [], [inline_buffer | acc], options)
|
||||
end
|
||||
|
||||
defp handle_inline(<<?*, ?*, rest::binary>>, ?d, buffer, acc, options)
|
||||
when rest == "" do
|
||||
handle_inline(<<>>, nil, [], [inline_buffer(buffer, options) | acc], options)
|
||||
end
|
||||
|
||||
defp handle_inline(<<mark, rest::binary>>, mark, buffer, acc, options)
|
||||
when rest == "" and mark in @single do
|
||||
handle_inline(<<>>, nil, [], [inline_buffer(buffer, options) | acc], options)
|
||||
end
|
||||
|
||||
defp handle_inline(<<?`, rest::binary>>, ?`, buffer, acc, options) do
|
||||
handle_inline(rest, nil, [], [inline_buffer(buffer, options) | acc], options)
|
||||
end
|
||||
|
||||
# Catch all
|
||||
|
||||
defp handle_inline(<<char, rest::binary>>, mark, buffer, acc, options) do
|
||||
handle_inline(rest, mark, [char | buffer], acc, options)
|
||||
end
|
||||
|
||||
defp handle_inline(<<>>, _mark, buffer, acc, _options) do
|
||||
IO.iodata_to_binary(Enum.reverse([Enum.reverse(buffer) | acc]))
|
||||
end
|
||||
|
||||
defp inline_buffer(buffer, options) do
|
||||
[h | t] = Enum.reverse([IO.ANSI.reset() | buffer])
|
||||
[color_for(h, options) | t]
|
||||
end
|
||||
|
||||
defp color_for(mark, colors) do
|
||||
case mark do
|
||||
"`" -> color(:doc_inline_code, colors)
|
||||
"_" -> color(:doc_underline, colors)
|
||||
"*" -> color(:doc_bold, colors)
|
||||
"**" -> color(:doc_bold, colors)
|
||||
end
|
||||
end
|
||||
|
||||
defp color(style, colors) do
|
||||
color = colors[style]
|
||||
IO.ANSI.format_fragment(color, colors[:enabled])
|
||||
end
|
||||
|
||||
defp newline_after_block, do: IO.puts(IO.ANSI.reset())
|
||||
end
|
||||
@@ -1,78 +0,0 @@
|
||||
defmodule IO.StreamError do
|
||||
defexception [:reason, :message]
|
||||
|
||||
@impl true
|
||||
def exception(opts) do
|
||||
reason = opts[:reason]
|
||||
formatted = IO.iodata_to_binary(:file.format_error(reason))
|
||||
%IO.StreamError{message: "error during streaming: #{formatted}", reason: reason}
|
||||
end
|
||||
end
|
||||
|
||||
defmodule IO.Stream do
|
||||
@moduledoc """
|
||||
Defines an `IO.Stream` struct returned by `IO.stream/2` and `IO.binstream/2`.
|
||||
|
||||
The following fields are public:
|
||||
|
||||
* `device` - the IO device
|
||||
* `raw` - a boolean indicating if bin functions should be used
|
||||
* `line_or_bytes` - if reading should read lines or a given number of bytes
|
||||
|
||||
It is worth noting that an IO stream has side effects and every time you go
|
||||
over the stream you may get different results.
|
||||
|
||||
"""
|
||||
|
||||
defstruct device: nil, raw: true, line_or_bytes: :line
|
||||
|
||||
@type t :: %__MODULE__{}
|
||||
|
||||
@doc false
|
||||
def __build__(device, raw, line_or_bytes) do
|
||||
%IO.Stream{device: device, raw: raw, line_or_bytes: line_or_bytes}
|
||||
end
|
||||
|
||||
defimpl Collectable do
|
||||
def into(%{device: device, raw: raw} = stream) do
|
||||
{:ok, into(stream, device, raw)}
|
||||
end
|
||||
|
||||
defp into(stream, device, raw) do
|
||||
fn
|
||||
:ok, {:cont, x} ->
|
||||
case raw do
|
||||
true -> IO.binwrite(device, x)
|
||||
false -> IO.write(device, x)
|
||||
end
|
||||
|
||||
:ok, _ ->
|
||||
stream
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defimpl Enumerable do
|
||||
def reduce(%{device: device, raw: raw, line_or_bytes: line_or_bytes}, acc, fun) do
|
||||
next_fun =
|
||||
case raw do
|
||||
true -> &IO.each_binstream(&1, line_or_bytes)
|
||||
false -> &IO.each_stream(&1, line_or_bytes)
|
||||
end
|
||||
|
||||
Stream.resource(fn -> device end, next_fun, & &1).(acc, fun)
|
||||
end
|
||||
|
||||
def count(_stream) do
|
||||
{:error, __MODULE__}
|
||||
end
|
||||
|
||||
def member?(_stream, _term) do
|
||||
{:error, __MODULE__}
|
||||
end
|
||||
|
||||
def slice(_stream) do
|
||||
{:error, __MODULE__}
|
||||
end
|
||||
end
|
||||
end
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,550 +0,0 @@
|
||||
defmodule Kernel.CLI do
|
||||
@moduledoc false
|
||||
|
||||
@blank_config %{
|
||||
commands: [],
|
||||
output: ".",
|
||||
compile: [],
|
||||
no_halt: false,
|
||||
compiler_options: [],
|
||||
errors: [],
|
||||
pa: [],
|
||||
pz: [],
|
||||
verbose_compile: false
|
||||
}
|
||||
|
||||
@doc """
|
||||
This is the API invoked by Elixir boot process.
|
||||
"""
|
||||
def main(argv) do
|
||||
argv = for arg <- argv, do: IO.chardata_to_string(arg)
|
||||
|
||||
{config, argv} = parse_argv(argv)
|
||||
System.argv(argv)
|
||||
System.no_halt(config.no_halt)
|
||||
|
||||
fun = fn _ ->
|
||||
errors = process_commands(config)
|
||||
|
||||
if errors != [] do
|
||||
Enum.each(errors, &IO.puts(:stderr, &1))
|
||||
System.halt(1)
|
||||
end
|
||||
end
|
||||
|
||||
run(fun)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Runs the given function by catching any failure
|
||||
and printing them to stdout. `at_exit` hooks are
|
||||
also invoked before exiting.
|
||||
|
||||
This function is used by Elixir's CLI and also
|
||||
by escripts generated by Elixir.
|
||||
"""
|
||||
def run(fun) do
|
||||
{ok_or_shutdown, status} = exec_fun(fun, {:ok, 0})
|
||||
|
||||
if ok_or_shutdown == :shutdown or not System.no_halt() do
|
||||
{_, status} = at_exit({ok_or_shutdown, status})
|
||||
|
||||
# Ensure Logger messages are flushed before halting
|
||||
case :erlang.whereis(Logger) do
|
||||
pid when is_pid(pid) -> Logger.flush()
|
||||
_ -> :ok
|
||||
end
|
||||
|
||||
System.halt(status)
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Parses the CLI arguments. Made public for testing.
|
||||
"""
|
||||
def parse_argv(argv) do
|
||||
parse_argv(argv, @blank_config)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Process CLI commands. Made public for testing.
|
||||
"""
|
||||
def process_commands(config) do
|
||||
results = Enum.map(Enum.reverse(config.commands), &process_command(&1, config))
|
||||
errors = for {:error, msg} <- results, do: msg
|
||||
Enum.reverse(config.errors, errors)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Shared helper for error formatting on CLI tools.
|
||||
"""
|
||||
def format_error(kind, reason, stacktrace) do
|
||||
{blamed, stacktrace} = Exception.blame(kind, reason, stacktrace)
|
||||
|
||||
iodata =
|
||||
case blamed do
|
||||
%FunctionClauseError{} ->
|
||||
formatted = Exception.format_banner(kind, reason, stacktrace)
|
||||
padded_blame = pad(FunctionClauseError.blame(blamed, &inspect/1, &blame_match/2))
|
||||
[formatted, padded_blame]
|
||||
|
||||
_ ->
|
||||
Exception.format_banner(kind, blamed, stacktrace)
|
||||
end
|
||||
|
||||
[iodata, ?\n, Exception.format_stacktrace(prune_stacktrace(stacktrace))]
|
||||
end
|
||||
|
||||
@doc """
|
||||
Function invoked across nodes for `--rpc-eval`.
|
||||
"""
|
||||
def rpc_eval(expr) do
|
||||
wrapper(fn -> :elixir.eval(to_charlist(expr), [], []) end)
|
||||
catch
|
||||
kind, reason -> {kind, reason, __STACKTRACE__}
|
||||
end
|
||||
|
||||
## Helpers
|
||||
|
||||
defp at_exit(res) do
|
||||
hooks = :elixir_config.get_and_put(:at_exit, [])
|
||||
res = Enum.reduce(hooks, res, &exec_fun/2)
|
||||
if hooks == [], do: res, else: at_exit(res)
|
||||
end
|
||||
|
||||
defp exec_fun(fun, res) when is_function(fun, 1) and is_tuple(res) do
|
||||
parent = self()
|
||||
|
||||
{pid, ref} =
|
||||
spawn_monitor(fn ->
|
||||
try do
|
||||
fun.(elem(res, 1))
|
||||
catch
|
||||
:exit, {:shutdown, int} when is_integer(int) ->
|
||||
send(parent, {self(), {:shutdown, int}})
|
||||
exit({:shutdown, int})
|
||||
|
||||
:exit, reason
|
||||
when reason == :normal
|
||||
when reason == :shutdown
|
||||
when tuple_size(reason) == 2 and elem(reason, 0) == :shutdown ->
|
||||
send(parent, {self(), {:shutdown, 0}})
|
||||
exit(reason)
|
||||
|
||||
kind, reason ->
|
||||
print_error(kind, reason, __STACKTRACE__)
|
||||
send(parent, {self(), {:shutdown, 1}})
|
||||
exit(to_exit(kind, reason, __STACKTRACE__))
|
||||
else
|
||||
_ ->
|
||||
send(parent, {self(), res})
|
||||
end
|
||||
end)
|
||||
|
||||
receive do
|
||||
{^pid, res} ->
|
||||
:erlang.demonitor(ref, [:flush])
|
||||
res
|
||||
|
||||
{:DOWN, ^ref, _, _, other} ->
|
||||
print_error({:EXIT, pid}, other, [])
|
||||
{:shutdown, 1}
|
||||
end
|
||||
end
|
||||
|
||||
defp to_exit(:throw, reason, stack), do: {{:nocatch, reason}, stack}
|
||||
defp to_exit(:error, reason, stack), do: {reason, stack}
|
||||
defp to_exit(:exit, reason, _stack), do: reason
|
||||
|
||||
defp shared_option?(list, config, callback) do
|
||||
case parse_shared(list, config) do
|
||||
{[h | hs], _} when h == hd(list) ->
|
||||
new_config = %{config | errors: ["#{h} : Unknown option" | config.errors]}
|
||||
callback.(hs, new_config)
|
||||
|
||||
{new_list, new_config} ->
|
||||
callback.(new_list, new_config)
|
||||
end
|
||||
end
|
||||
|
||||
## Error handling
|
||||
|
||||
defp print_error(kind, reason, stacktrace) do
|
||||
IO.write(:stderr, format_error(kind, reason, stacktrace))
|
||||
end
|
||||
|
||||
defp blame_match(%{match?: true, node: node}, _), do: blame_ansi(:normal, "+", node)
|
||||
defp blame_match(%{match?: false, node: node}, _), do: blame_ansi(:red, "-", node)
|
||||
defp blame_match(_, string), do: string
|
||||
|
||||
defp blame_ansi(color, no_ansi, node) do
|
||||
if IO.ANSI.enabled?() do
|
||||
[color | Macro.to_string(node)]
|
||||
|> IO.ANSI.format(true)
|
||||
|> IO.iodata_to_binary()
|
||||
else
|
||||
no_ansi <> Macro.to_string(node) <> no_ansi
|
||||
end
|
||||
end
|
||||
|
||||
defp pad(string) do
|
||||
" " <> String.replace(string, "\n", "\n ")
|
||||
end
|
||||
|
||||
@elixir_internals [:elixir, :elixir_aliases, :elixir_expand, :elixir_compiler, :elixir_module] ++
|
||||
[:elixir_clauses, :elixir_lexical, :elixir_def, :elixir_map] ++
|
||||
[:elixir_erl, :elixir_erl_clauses, :elixir_erl_pass, Kernel.ErrorHandler]
|
||||
|
||||
defp prune_stacktrace([{mod, _, _, _} | t]) when mod in @elixir_internals do
|
||||
prune_stacktrace(t)
|
||||
end
|
||||
|
||||
defp prune_stacktrace([{__MODULE__, :wrapper, 1, _} | _]) do
|
||||
[]
|
||||
end
|
||||
|
||||
defp prune_stacktrace([h | t]) do
|
||||
[h | prune_stacktrace(t)]
|
||||
end
|
||||
|
||||
defp prune_stacktrace([]) do
|
||||
[]
|
||||
end
|
||||
|
||||
# Parse shared options
|
||||
|
||||
defp parse_shared([opt | _t], _config) when opt in ["-v", "--version"] do
|
||||
if function_exported?(IEx, :started?, 0) and IEx.started?() do
|
||||
IO.puts("IEx " <> System.build_info()[:build])
|
||||
else
|
||||
IO.puts(:erlang.system_info(:system_version))
|
||||
IO.puts("Elixir " <> System.build_info()[:build])
|
||||
end
|
||||
|
||||
System.halt(0)
|
||||
end
|
||||
|
||||
defp parse_shared(["-pa", h | t], config) do
|
||||
paths = expand_code_path(h)
|
||||
Enum.each(paths, &:code.add_patha/1)
|
||||
parse_shared(t, %{config | pa: config.pa ++ paths})
|
||||
end
|
||||
|
||||
defp parse_shared(["-pz", h | t], config) do
|
||||
paths = expand_code_path(h)
|
||||
Enum.each(paths, &:code.add_pathz/1)
|
||||
parse_shared(t, %{config | pz: config.pz ++ paths})
|
||||
end
|
||||
|
||||
defp parse_shared(["--app", h | t], config) do
|
||||
parse_shared(t, %{config | commands: [{:app, h} | config.commands]})
|
||||
end
|
||||
|
||||
defp parse_shared(["--no-halt" | t], config) do
|
||||
parse_shared(t, %{config | no_halt: true})
|
||||
end
|
||||
|
||||
defp parse_shared(["-e", h | t], config) do
|
||||
parse_shared(t, %{config | commands: [{:eval, h} | config.commands]})
|
||||
end
|
||||
|
||||
defp parse_shared(["--eval", h | t], config) do
|
||||
parse_shared(t, %{config | commands: [{:eval, h} | config.commands]})
|
||||
end
|
||||
|
||||
defp parse_shared(["--rpc-eval", node, h | t], config) do
|
||||
node = append_hostname(node)
|
||||
parse_shared(t, %{config | commands: [{:rpc_eval, node, h} | config.commands]})
|
||||
end
|
||||
|
||||
defp parse_shared(["-r", h | t], config) do
|
||||
parse_shared(t, %{config | commands: [{:require, h} | config.commands]})
|
||||
end
|
||||
|
||||
defp parse_shared(["-pr", h | t], config) do
|
||||
parse_shared(t, %{config | commands: [{:parallel_require, h} | config.commands]})
|
||||
end
|
||||
|
||||
defp parse_shared(list, config) do
|
||||
{list, config}
|
||||
end
|
||||
|
||||
defp append_hostname(node) do
|
||||
case :string.find(node, "@") do
|
||||
:nomatch -> node <> :string.find(Atom.to_string(node()), "@")
|
||||
_ -> node
|
||||
end
|
||||
end
|
||||
|
||||
defp expand_code_path(path) do
|
||||
path = Path.expand(path)
|
||||
|
||||
case Path.wildcard(path) do
|
||||
[] -> [to_charlist(path)]
|
||||
list -> Enum.map(list, &to_charlist/1)
|
||||
end
|
||||
end
|
||||
|
||||
# Process init options
|
||||
|
||||
defp parse_argv(["--" | t], config) do
|
||||
{config, t}
|
||||
end
|
||||
|
||||
defp parse_argv(["+elixirc" | t], config) do
|
||||
parse_compiler(t, config)
|
||||
end
|
||||
|
||||
defp parse_argv(["+iex" | t], config) do
|
||||
parse_iex(t, config)
|
||||
end
|
||||
|
||||
defp parse_argv(["-S", h | t], config) do
|
||||
{%{config | commands: [{:script, h} | config.commands]}, t}
|
||||
end
|
||||
|
||||
defp parse_argv([h | t] = list, config) do
|
||||
case h do
|
||||
"-" <> _ ->
|
||||
shared_option?(list, config, &parse_argv(&1, &2))
|
||||
|
||||
_ ->
|
||||
if List.keymember?(config.commands, :eval, 0) do
|
||||
{config, list}
|
||||
else
|
||||
{%{config | commands: [{:file, h} | config.commands]}, t}
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defp parse_argv([], config) do
|
||||
{config, []}
|
||||
end
|
||||
|
||||
# Parse compiler options
|
||||
|
||||
defp parse_compiler(["--" | t], config) do
|
||||
{config, t}
|
||||
end
|
||||
|
||||
defp parse_compiler(["-o", h | t], config) do
|
||||
parse_compiler(t, %{config | output: h})
|
||||
end
|
||||
|
||||
defp parse_compiler(["--no-docs" | t], config) do
|
||||
parse_compiler(t, %{config | compiler_options: [{:docs, false} | config.compiler_options]})
|
||||
end
|
||||
|
||||
defp parse_compiler(["--no-debug-info" | t], config) do
|
||||
compiler_options = [{:debug_info, false} | config.compiler_options]
|
||||
parse_compiler(t, %{config | compiler_options: compiler_options})
|
||||
end
|
||||
|
||||
defp parse_compiler(["--ignore-module-conflict" | t], config) do
|
||||
compiler_options = [{:ignore_module_conflict, true} | config.compiler_options]
|
||||
parse_compiler(t, %{config | compiler_options: compiler_options})
|
||||
end
|
||||
|
||||
defp parse_compiler(["--warnings-as-errors" | t], config) do
|
||||
compiler_options = [{:warnings_as_errors, true} | config.compiler_options]
|
||||
parse_compiler(t, %{config | compiler_options: compiler_options})
|
||||
end
|
||||
|
||||
defp parse_compiler(["--verbose" | t], config) do
|
||||
parse_compiler(t, %{config | verbose_compile: true})
|
||||
end
|
||||
|
||||
defp parse_compiler([h | t] = list, config) do
|
||||
case h do
|
||||
"-" <> _ ->
|
||||
shared_option?(list, config, &parse_compiler(&1, &2))
|
||||
|
||||
_ ->
|
||||
pattern = if File.dir?(h), do: "#{h}/**/*.ex", else: h
|
||||
parse_compiler(t, %{config | compile: [pattern | config.compile]})
|
||||
end
|
||||
end
|
||||
|
||||
defp parse_compiler([], config) do
|
||||
{%{config | commands: [{:compile, config.compile} | config.commands]}, []}
|
||||
end
|
||||
|
||||
# Parse IEx options
|
||||
|
||||
defp parse_iex(["--" | t], config) do
|
||||
{config, t}
|
||||
end
|
||||
|
||||
# This clause is here so that Kernel.CLI does not
|
||||
# error out with "unknown option"
|
||||
defp parse_iex(["--dot-iex", _ | t], config) do
|
||||
parse_iex(t, config)
|
||||
end
|
||||
|
||||
defp parse_iex([opt, _ | t], config) when opt in ["--remsh"] do
|
||||
parse_iex(t, config)
|
||||
end
|
||||
|
||||
defp parse_iex(["-S", h | t], config) do
|
||||
{%{config | commands: [{:script, h} | config.commands]}, t}
|
||||
end
|
||||
|
||||
defp parse_iex([h | t] = list, config) do
|
||||
case h do
|
||||
"-" <> _ -> shared_option?(list, config, &parse_iex(&1, &2))
|
||||
_ -> {%{config | commands: [{:file, h} | config.commands]}, t}
|
||||
end
|
||||
end
|
||||
|
||||
defp parse_iex([], config) do
|
||||
{config, []}
|
||||
end
|
||||
|
||||
# Process commands
|
||||
|
||||
defp process_command({:cookie, h}, _config) do
|
||||
if Node.alive?() do
|
||||
wrapper(fn -> Node.set_cookie(String.to_atom(h)) end)
|
||||
else
|
||||
{:error, "--cookie : Cannot set cookie if the node is not alive (set --name or --sname)"}
|
||||
end
|
||||
end
|
||||
|
||||
defp process_command({:eval, expr}, _config) when is_binary(expr) do
|
||||
wrapper(fn -> Code.eval_string(expr, []) end)
|
||||
end
|
||||
|
||||
defp process_command({:rpc_eval, node, expr}, _config) when is_binary(expr) do
|
||||
case :rpc.call(String.to_atom(node), __MODULE__, :rpc_eval, [expr]) do
|
||||
:ok -> :ok
|
||||
{:badrpc, {:EXIT, exit}} -> Process.exit(self(), exit)
|
||||
{:badrpc, reason} -> {:error, "--rpc-eval : RPC failed with reason #{inspect(reason)}"}
|
||||
{kind, error, stack} -> :erlang.raise(kind, error, stack)
|
||||
end
|
||||
end
|
||||
|
||||
defp process_command({:app, app}, _config) when is_binary(app) do
|
||||
case Application.ensure_all_started(String.to_atom(app)) do
|
||||
{:error, {app, reason}} ->
|
||||
msg = "--app : Could not start application #{app}: " <> Application.format_error(reason)
|
||||
{:error, msg}
|
||||
|
||||
{:ok, _} ->
|
||||
:ok
|
||||
end
|
||||
end
|
||||
|
||||
defp process_command({:script, file}, _config) when is_binary(file) do
|
||||
if exec = find_elixir_executable(file) do
|
||||
wrapper(fn -> Code.require_file(exec) end)
|
||||
else
|
||||
{:error, "-S : Could not find executable #{file}"}
|
||||
end
|
||||
end
|
||||
|
||||
defp process_command({:file, file}, _config) when is_binary(file) do
|
||||
if File.regular?(file) do
|
||||
wrapper(fn -> Code.require_file(file) end)
|
||||
else
|
||||
{:error, "No file named #{file}"}
|
||||
end
|
||||
end
|
||||
|
||||
defp process_command({:require, pattern}, _config) when is_binary(pattern) do
|
||||
files = filter_patterns(pattern)
|
||||
|
||||
if files != [] do
|
||||
wrapper(fn -> Enum.map(files, &Code.require_file(&1)) end)
|
||||
else
|
||||
{:error, "-r : No files matched pattern #{pattern}"}
|
||||
end
|
||||
end
|
||||
|
||||
defp process_command({:parallel_require, pattern}, _config) when is_binary(pattern) do
|
||||
files = filter_patterns(pattern)
|
||||
|
||||
if files != [] do
|
||||
wrapper(fn ->
|
||||
case Kernel.ParallelCompiler.require(files) do
|
||||
{:ok, _, _} -> :ok
|
||||
{:error, _, _} -> exit({:shutdown, 1})
|
||||
end
|
||||
end)
|
||||
else
|
||||
{:error, "-pr : No files matched pattern #{pattern}"}
|
||||
end
|
||||
end
|
||||
|
||||
defp process_command({:compile, patterns}, config) do
|
||||
# If ensuring the dir returns an error no files will be found.
|
||||
_ = :filelib.ensure_dir(:filename.join(config.output, "."))
|
||||
|
||||
case filter_multiple_patterns(patterns) do
|
||||
{:ok, []} ->
|
||||
{:error, "No files matched provided patterns"}
|
||||
|
||||
{:ok, files} ->
|
||||
wrapper(fn ->
|
||||
Code.compiler_options(config.compiler_options)
|
||||
|
||||
opts =
|
||||
if config.verbose_compile do
|
||||
[each_long_compilation: &IO.puts("Compiling #{&1} (it's taking more than 15s)")]
|
||||
else
|
||||
[]
|
||||
end
|
||||
|
||||
case Kernel.ParallelCompiler.compile_to_path(files, config.output, opts) do
|
||||
{:ok, _, _} -> :ok
|
||||
{:error, _, _} -> exit({:shutdown, 1})
|
||||
end
|
||||
end)
|
||||
|
||||
{:missing, missing} ->
|
||||
{:error, "No files matched pattern(s) #{Enum.join(missing, ",")}"}
|
||||
end
|
||||
end
|
||||
|
||||
defp filter_patterns(pattern) do
|
||||
pattern
|
||||
|> Path.wildcard()
|
||||
|> :lists.usort()
|
||||
|> Enum.filter(&File.regular?/1)
|
||||
end
|
||||
|
||||
defp filter_multiple_patterns(patterns) do
|
||||
{files, missing} =
|
||||
Enum.reduce(patterns, {[], []}, fn pattern, {files, missing} ->
|
||||
case filter_patterns(pattern) do
|
||||
[] -> {files, [pattern | missing]}
|
||||
match -> {match ++ files, missing}
|
||||
end
|
||||
end)
|
||||
|
||||
case missing do
|
||||
[] -> {:ok, :lists.usort(files)}
|
||||
_ -> {:missing, :lists.usort(missing)}
|
||||
end
|
||||
end
|
||||
|
||||
defp wrapper(fun) do
|
||||
_ = fun.()
|
||||
:ok
|
||||
end
|
||||
|
||||
defp find_elixir_executable(file) do
|
||||
if exec = System.find_executable(file) do
|
||||
# If we are on Windows, the executable is going to be
|
||||
# a .bat file that must be in the same directory as
|
||||
# the actual Elixir executable.
|
||||
case :os.type() do
|
||||
{:win32, _} ->
|
||||
base = Path.rootname(exec)
|
||||
if File.regular?(base), do: base, else: exec
|
||||
|
||||
_ ->
|
||||
exec
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
@@ -1,43 +0,0 @@
|
||||
# Implement error_handler pattern for Erlang
|
||||
# which is integrated with Kernel.ParallelCompiler
|
||||
defmodule Kernel.ErrorHandler do
|
||||
@moduledoc false
|
||||
|
||||
@spec undefined_function(module, atom, list) :: term
|
||||
def undefined_function(module, fun, args) do
|
||||
ensure_loaded(module) or ensure_compiled(module, :module, :raise)
|
||||
:error_handler.undefined_function(module, fun, args)
|
||||
end
|
||||
|
||||
@spec undefined_lambda(module, fun, list) :: term
|
||||
def undefined_lambda(module, fun, args) do
|
||||
ensure_loaded(module) or ensure_compiled(module, :module, :raise)
|
||||
:error_handler.undefined_lambda(module, fun, args)
|
||||
end
|
||||
|
||||
@spec ensure_loaded(module) :: boolean
|
||||
def ensure_loaded(module) do
|
||||
case :code.ensure_loaded(module) do
|
||||
{:module, _} -> true
|
||||
{:error, _} -> false
|
||||
end
|
||||
end
|
||||
|
||||
@spec ensure_compiled(module, atom, atom) :: :found | :not_found | :deadlock
|
||||
# Never wait on nil because it should never be defined.
|
||||
def ensure_compiled(nil, _kind, _deadlock) do
|
||||
:not_found
|
||||
end
|
||||
|
||||
def ensure_compiled(module, kind, deadlock) do
|
||||
parent = :erlang.get(:elixir_compiler_pid)
|
||||
ref = :erlang.make_ref()
|
||||
modules = :elixir_module.compiler_modules()
|
||||
send(parent, {:waiting, kind, self(), ref, module, modules, deadlock})
|
||||
:erlang.garbage_collect(self())
|
||||
|
||||
receive do
|
||||
{^ref, value} -> value
|
||||
end
|
||||
end
|
||||
end
|
||||
@@ -1,291 +0,0 @@
|
||||
# This is an Elixir module responsible for tracking references
|
||||
# to modules, remote dispatches, and the usage of
|
||||
# aliases/imports/requires in the Elixir scope.
|
||||
#
|
||||
# Note that since this is required for bootstrap, we can't use
|
||||
# any of the `GenServer.Behaviour` conveniences.
|
||||
defmodule Kernel.LexicalTracker do
|
||||
@moduledoc false
|
||||
@timeout 30000
|
||||
@behaviour :gen_server
|
||||
|
||||
@doc """
|
||||
Returns all remotes referenced in this lexical scope.
|
||||
"""
|
||||
def remote_references(pid) do
|
||||
:gen_server.call(pid, :remote_references, @timeout)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Returns all remote dispatches in this lexical scope.
|
||||
"""
|
||||
def remote_dispatches(pid) do
|
||||
:gen_server.call(pid, :remote_dispatches, @timeout)
|
||||
end
|
||||
|
||||
# Internal API
|
||||
|
||||
# Starts the tracker and returns its PID.
|
||||
@doc false
|
||||
def start_link() do
|
||||
:gen_server.start_link(__MODULE__, :ok, [])
|
||||
end
|
||||
|
||||
@doc false
|
||||
def stop(pid) do
|
||||
:gen_server.call(pid, :stop)
|
||||
end
|
||||
|
||||
@doc false
|
||||
def add_import(pid, module, fas, line, warn) when is_atom(module) do
|
||||
:gen_server.cast(pid, {:add_import, module, fas, line, warn})
|
||||
end
|
||||
|
||||
@doc false
|
||||
def add_alias(pid, module, line, warn) when is_atom(module) do
|
||||
:gen_server.cast(pid, {:add_alias, module, line, warn})
|
||||
end
|
||||
|
||||
@doc false
|
||||
def remote_reference(pid, module, mode) when is_atom(module) do
|
||||
:gen_server.cast(pid, {:remote_reference, module, mode})
|
||||
end
|
||||
|
||||
@doc false
|
||||
def remote_dispatch(pid, module, fa, line, mode) when is_atom(module) do
|
||||
:gen_server.cast(pid, {:remote_dispatch, module, fa, line, mode})
|
||||
end
|
||||
|
||||
@doc false
|
||||
def remote_struct(pid, module, line) when is_atom(module) do
|
||||
:gen_server.cast(pid, {:remote_struct, module, line})
|
||||
end
|
||||
|
||||
@doc false
|
||||
def import_dispatch(pid, module, fa, line, mode) when is_atom(module) do
|
||||
:gen_server.cast(pid, {:import_dispatch, module, fa, line, mode})
|
||||
end
|
||||
|
||||
@doc false
|
||||
def alias_dispatch(pid, module) when is_atom(module) do
|
||||
:gen_server.cast(pid, {:alias_dispatch, module})
|
||||
end
|
||||
|
||||
@doc false
|
||||
def set_file(pid, file) do
|
||||
:gen_server.cast(pid, {:set_file, file})
|
||||
end
|
||||
|
||||
@doc false
|
||||
def reset_file(pid) do
|
||||
:gen_server.cast(pid, :reset_file)
|
||||
end
|
||||
|
||||
@doc false
|
||||
def write_cache(pid, value) do
|
||||
key = :erlang.unique_integer()
|
||||
:gen_server.cast(pid, {:write_cache, key, value})
|
||||
key
|
||||
end
|
||||
|
||||
@doc false
|
||||
def read_cache(pid, key) do
|
||||
:gen_server.call(pid, {:read_cache, key}, @timeout)
|
||||
end
|
||||
|
||||
@doc false
|
||||
def collect_unused_imports(pid) do
|
||||
unused(pid, :import)
|
||||
end
|
||||
|
||||
@doc false
|
||||
def collect_unused_aliases(pid) do
|
||||
unused(pid, :alias)
|
||||
end
|
||||
|
||||
defp unused(pid, tag) do
|
||||
:gen_server.call(pid, {:unused, tag}, @timeout)
|
||||
end
|
||||
|
||||
# Callbacks
|
||||
|
||||
def init(:ok) do
|
||||
state = %{
|
||||
directives: %{},
|
||||
references: %{},
|
||||
compile: %{},
|
||||
runtime: %{},
|
||||
structs: %{},
|
||||
cache: %{},
|
||||
file: nil
|
||||
}
|
||||
|
||||
{:ok, state}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_call({:unused, tag}, _from, state) do
|
||||
directives =
|
||||
for {{^tag, module_or_mfa}, marker} <- state.directives, is_integer(marker) do
|
||||
{module_or_mfa, marker}
|
||||
end
|
||||
|
||||
{:reply, Enum.sort(directives), state}
|
||||
end
|
||||
|
||||
def handle_call(:remote_references, _from, state) do
|
||||
{compile, runtime} = partition(:maps.to_list(state.references), [], [])
|
||||
{:reply, {compile, :maps.keys(state.structs), runtime}, state}
|
||||
end
|
||||
|
||||
def handle_call(:remote_dispatches, _from, state) do
|
||||
{:reply, {state.compile, state.runtime}, state}
|
||||
end
|
||||
|
||||
def handle_call({:read_cache, key}, _from, %{cache: cache} = state) do
|
||||
{:reply, :maps.get(key, cache), state}
|
||||
end
|
||||
|
||||
def handle_call(:stop, _from, state) do
|
||||
{:stop, :normal, :ok, state}
|
||||
end
|
||||
|
||||
def handle_cast({:write_cache, key, value}, %{cache: cache} = state) do
|
||||
{:noreply, %{state | cache: :maps.put(key, value, cache)}}
|
||||
end
|
||||
|
||||
def handle_cast({:remote_reference, module, mode}, state) do
|
||||
{:noreply, %{state | references: add_reference(state.references, module, mode)}}
|
||||
end
|
||||
|
||||
def handle_cast({:remote_struct, module, line}, state) do
|
||||
state = add_remote_dispatch(state, module, {:__struct__, 0}, line, :compile)
|
||||
structs = :maps.put(module, true, state.structs)
|
||||
{:noreply, %{state | structs: structs}}
|
||||
end
|
||||
|
||||
def handle_cast({:remote_dispatch, module, fa, line, mode}, state) do
|
||||
references = add_reference(state.references, module, mode)
|
||||
state = add_remote_dispatch(state, module, fa, line, mode)
|
||||
{:noreply, %{state | references: references}}
|
||||
end
|
||||
|
||||
def handle_cast({:import_dispatch, module, {function, arity} = fa, line, mode}, state) do
|
||||
state =
|
||||
state
|
||||
|> add_import_dispatch(module, function, arity)
|
||||
|> add_remote_dispatch(module, fa, line, mode)
|
||||
|
||||
{:noreply, state}
|
||||
end
|
||||
|
||||
def handle_cast({:alias_dispatch, module}, state) do
|
||||
{:noreply, %{state | directives: add_dispatch(state.directives, module, :alias)}}
|
||||
end
|
||||
|
||||
def handle_cast({:set_file, file}, state) do
|
||||
{:noreply, %{state | file: file}}
|
||||
end
|
||||
|
||||
def handle_cast(:reset_file, state) do
|
||||
{:noreply, %{state | file: nil}}
|
||||
end
|
||||
|
||||
def handle_cast({:add_import, module, fas, line, warn}, state) do
|
||||
directives =
|
||||
state.directives
|
||||
|> Enum.reject(&match?({{:import, {^module, _, _}}, _}, &1))
|
||||
|> :maps.from_list()
|
||||
|> add_directive(module, line, warn, :import)
|
||||
|
||||
directives =
|
||||
Enum.reduce(fas, directives, fn {function, arity}, directives ->
|
||||
add_directive(directives, {module, function, arity}, line, warn, :import)
|
||||
end)
|
||||
|
||||
{:noreply, %{state | directives: directives}}
|
||||
end
|
||||
|
||||
def handle_cast({:add_alias, module, line, warn}, state) do
|
||||
{:noreply, %{state | directives: add_directive(state.directives, module, line, warn, :alias)}}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def handle_info(_msg, state) do
|
||||
{:noreply, state}
|
||||
end
|
||||
|
||||
@doc false
|
||||
def terminate(_reason, _state) do
|
||||
:ok
|
||||
end
|
||||
|
||||
@doc false
|
||||
def code_change(_old, state, _extra) do
|
||||
{:ok, state}
|
||||
end
|
||||
|
||||
defp partition([{remote, :compile} | t], compile, runtime),
|
||||
do: partition(t, [remote | compile], runtime)
|
||||
|
||||
defp partition([{remote, :runtime} | t], compile, runtime),
|
||||
do: partition(t, compile, [remote | runtime])
|
||||
|
||||
defp partition([], compile, runtime), do: {compile, runtime}
|
||||
|
||||
# Callbacks helpers
|
||||
|
||||
defp add_reference(references, module, :compile) when is_atom(module),
|
||||
do: :maps.put(module, :compile, references)
|
||||
|
||||
defp add_reference(references, module, :runtime) when is_atom(module) do
|
||||
case :maps.find(module, references) do
|
||||
{:ok, _} -> references
|
||||
:error -> :maps.put(module, :runtime, references)
|
||||
end
|
||||
end
|
||||
|
||||
defp add_remote_dispatch(state, module, fa, line, mode) when is_atom(module) do
|
||||
location = location(state.file, line)
|
||||
|
||||
map_update(mode, %{module => %{fa => [location]}}, state, fn mode_dispatches ->
|
||||
map_update(module, %{fa => [location]}, mode_dispatches, fn module_dispatches ->
|
||||
map_update(fa, [location], module_dispatches, &[location | List.delete(&1, location)])
|
||||
end)
|
||||
end)
|
||||
end
|
||||
|
||||
defp location(nil, line), do: line
|
||||
defp location(file, line), do: {file, line}
|
||||
|
||||
defp add_import_dispatch(state, module, function, arity) do
|
||||
directives =
|
||||
add_dispatch(state.directives, module, :import)
|
||||
|> add_dispatch({module, function, arity}, :import)
|
||||
|
||||
# Always compile time because we depend
|
||||
# on the module at compile time
|
||||
references = add_reference(state.references, module, :compile)
|
||||
|
||||
%{state | directives: directives, references: references}
|
||||
end
|
||||
|
||||
# In the map we keep imports and aliases.
|
||||
# If the value is a line, it was imported/aliased and has a pending warning
|
||||
# If the value is true, it was imported/aliased and used
|
||||
defp add_directive(directives, module_or_mfa, line, warn, tag) do
|
||||
marker = if warn, do: line, else: true
|
||||
:maps.put({tag, module_or_mfa}, marker, directives)
|
||||
end
|
||||
|
||||
defp add_dispatch(directives, module_or_mfa, tag) do
|
||||
:maps.put({tag, module_or_mfa}, true, directives)
|
||||
end
|
||||
|
||||
defp map_update(key, initial, map, fun) do
|
||||
case :maps.find(key, map) do
|
||||
{:ok, val} -> :maps.put(key, fun.(val), map)
|
||||
:error -> :maps.put(key, initial, map)
|
||||
end
|
||||
end
|
||||
end
|
||||
@@ -1,549 +0,0 @@
|
||||
defmodule Kernel.ParallelCompiler do
|
||||
@moduledoc """
|
||||
A module responsible for compiling and requiring files in parallel.
|
||||
"""
|
||||
|
||||
@doc """
|
||||
Starts a task for parallel compilation.
|
||||
|
||||
If you have a file that needs to compile other modules in parallel,
|
||||
the spawned processes need to be aware of the compiler environment.
|
||||
This function allows a developer to create a task that is aware of
|
||||
those environments.
|
||||
|
||||
See `Task.async/1` for more information. The task spawned must be
|
||||
always awaited on by calling `Task.await/1`
|
||||
"""
|
||||
@doc since: "1.6.0"
|
||||
def async(fun) when is_function(fun) do
|
||||
if parent = :erlang.get(:elixir_compiler_pid) do
|
||||
file = :erlang.get(:elixir_compiler_file)
|
||||
dest = :erlang.get(:elixir_compiler_dest)
|
||||
{:error_handler, error_handler} = :erlang.process_info(self(), :error_handler)
|
||||
|
||||
Task.async(fn ->
|
||||
send(parent, {:async, self()})
|
||||
:erlang.put(:elixir_compiler_pid, parent)
|
||||
:erlang.put(:elixir_compiler_file, file)
|
||||
dest != :undefined and :erlang.put(:elixir_compiler_dest, dest)
|
||||
:erlang.process_flag(:error_handler, error_handler)
|
||||
fun.()
|
||||
end)
|
||||
else
|
||||
raise ArgumentError,
|
||||
"cannot spawn parallel compiler task because " <>
|
||||
"the current file is not being compiled/required"
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Compiles the given files.
|
||||
|
||||
Those files are compiled in parallel and can automatically
|
||||
detect dependencies between them. Once a dependency is found,
|
||||
the current file stops being compiled until the dependency is
|
||||
resolved.
|
||||
|
||||
It returns `{:ok, modules, warnings}` or `{:error, errors, warnings}`.
|
||||
|
||||
Both errors and warnings are a list of three-element tuples containing
|
||||
the file, line and the formatted error/warning.
|
||||
|
||||
## Options
|
||||
|
||||
* `:each_file` - for each file compiled, invokes the callback passing the
|
||||
file
|
||||
|
||||
* `:each_long_compilation` - for each file that takes more than a given
|
||||
timeout (see the `:long_compilation_threshold` option) to compile, invoke
|
||||
this callback passing the file as its argument
|
||||
|
||||
* `:each_module` - for each module compiled, invokes the callback passing
|
||||
the file, module and the module bytecode
|
||||
|
||||
* `:each_cycle` - after the given files are compiled, invokes this function
|
||||
that return a list with potentially more files to compile
|
||||
|
||||
* `:long_compilation_threshold` - the timeout (in seconds) after the
|
||||
`:each_long_compilation` callback is invoked; defaults to `15`
|
||||
|
||||
* `:dest` - the destination directory for the BEAM files. When using `compile/2`,
|
||||
this information is only used to properly annotate the BEAM files before
|
||||
they are loaded into memory. If you want a file to actually be written to
|
||||
`dest`, use `compile_to_path/3` instead.
|
||||
|
||||
"""
|
||||
@doc since: "1.6.0"
|
||||
def compile(files, options \\ []) when is_list(options) do
|
||||
spawn_workers(files, :compile, options)
|
||||
end
|
||||
|
||||
@doc since: "1.6.0"
|
||||
def compile_to_path(files, path, options \\ []) when is_binary(path) and is_list(options) do
|
||||
spawn_workers(files, {:compile, path}, options)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Requires the given files in parallel.
|
||||
|
||||
Opposite to compile, dependencies are not attempted to be
|
||||
automatically solved between files.
|
||||
|
||||
It returns `{:ok, modules, warnings}` or `{:error, errors, warnings}`.
|
||||
|
||||
Both errors and warnings are a list of three-element tuples containing
|
||||
the file, line and the formatted error/warning.
|
||||
|
||||
## Options
|
||||
|
||||
* `:each_file` - for each file compiled, invokes the callback passing the
|
||||
file
|
||||
|
||||
* `:each_module` - for each module compiled, invokes the callback passing
|
||||
the file, module and the module bytecode
|
||||
|
||||
"""
|
||||
@doc since: "1.6.0"
|
||||
def require(files, options \\ []) when is_list(options) do
|
||||
spawn_workers(files, :require, options)
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated "Use Kernel.ParallelCompiler.compile/2 instead"
|
||||
def files(files, options \\ []) when is_list(options) do
|
||||
case spawn_workers(files, :compile, options) do
|
||||
{:ok, modules, _} -> modules
|
||||
{:error, _, _} -> exit({:shutdown, 1})
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated "Use Kernel.ParallelCompiler.compile_to_path/2 instead"
|
||||
def files_to_path(files, path, options \\ []) when is_binary(path) and is_list(options) do
|
||||
case spawn_workers(files, {:compile, path}, options) do
|
||||
{:ok, modules, _} -> modules
|
||||
{:error, _, _} -> exit({:shutdown, 1})
|
||||
end
|
||||
end
|
||||
|
||||
defp spawn_workers(files, output, options) do
|
||||
{:module, _} = :code.ensure_loaded(Kernel.ErrorHandler)
|
||||
compiler_pid = self()
|
||||
:elixir_code_server.cast({:reset_warnings, compiler_pid})
|
||||
schedulers = max(:erlang.system_info(:schedulers_online), 2)
|
||||
|
||||
result =
|
||||
spawn_workers(files, 0, [], [], %{}, [], %{
|
||||
dest: Keyword.get(options, :dest),
|
||||
each_cycle: Keyword.get(options, :each_cycle, fn -> [] end),
|
||||
each_file: Keyword.get(options, :each_file, fn _, _ -> :ok end) |> each_file(),
|
||||
each_long_compilation: Keyword.get(options, :each_long_compilation, fn _file -> :ok end),
|
||||
each_module: Keyword.get(options, :each_module, fn _file, _module, _binary -> :ok end),
|
||||
output: output,
|
||||
long_compilation_threshold: Keyword.get(options, :long_compilation_threshold, 15),
|
||||
schedulers: schedulers
|
||||
})
|
||||
|
||||
# In case --warning-as-errors is enabled and there was a warning,
|
||||
# compilation status will be set to error.
|
||||
compilation_status = :elixir_code_server.call({:compilation_status, compiler_pid})
|
||||
|
||||
case {result, compilation_status} do
|
||||
{{:ok, _, warnings}, :error} ->
|
||||
message = "Compilation failed due to warnings while using the --warnings-as-errors option"
|
||||
IO.puts(:stderr, message)
|
||||
{:error, warnings, []}
|
||||
|
||||
{{:error, errors, warnings}, :error} ->
|
||||
{:error, errors ++ warnings, []}
|
||||
|
||||
_ ->
|
||||
result
|
||||
end
|
||||
end
|
||||
|
||||
defp each_file(fun) when is_function(fun, 1), do: fn file, _ -> fun.(file) end
|
||||
defp each_file(fun) when is_function(fun, 2), do: fun
|
||||
|
||||
defp each_file(file, lexical, parent) do
|
||||
ref = Process.monitor(parent)
|
||||
send(parent, {:file_ok, self(), ref, file, lexical})
|
||||
|
||||
receive do
|
||||
^ref -> :ok
|
||||
{:DOWN, ^ref, _, _, _} -> :ok
|
||||
end
|
||||
end
|
||||
|
||||
# We already have n=schedulers currently running, don't spawn new ones
|
||||
defp spawn_workers(
|
||||
queue,
|
||||
spawned,
|
||||
waiting,
|
||||
files,
|
||||
result,
|
||||
warnings,
|
||||
%{schedulers: schedulers} = state
|
||||
)
|
||||
when spawned - length(waiting) >= schedulers do
|
||||
wait_for_messages(queue, spawned, waiting, files, result, warnings, state)
|
||||
end
|
||||
|
||||
# Release waiting processes
|
||||
defp spawn_workers([{ref, found} | t], spawned, waiting, files, result, warnings, state) do
|
||||
waiting =
|
||||
case List.keytake(waiting, ref, 2) do
|
||||
{{_kind, pid, ^ref, _on, _defining, _deadlock}, waiting} ->
|
||||
send(pid, {ref, found})
|
||||
waiting
|
||||
|
||||
nil ->
|
||||
# In case the waiting process died (for example, it was an async process),
|
||||
# it will no longer be on the list. So we need to take it into account here.
|
||||
waiting
|
||||
end
|
||||
|
||||
spawn_workers(t, spawned, waiting, files, result, warnings, state)
|
||||
end
|
||||
|
||||
defp spawn_workers([file | queue], spawned, waiting, files, result, warnings, state) do
|
||||
%{output: output, long_compilation_threshold: threshold, dest: dest} = state
|
||||
parent = self()
|
||||
file = Path.expand(file)
|
||||
|
||||
{pid, ref} =
|
||||
:erlang.spawn_monitor(fn ->
|
||||
:erlang.put(:elixir_compiler_pid, parent)
|
||||
:erlang.put(:elixir_compiler_file, file)
|
||||
|
||||
try do
|
||||
case output do
|
||||
{:compile, path} ->
|
||||
:erlang.process_flag(:error_handler, Kernel.ErrorHandler)
|
||||
:erlang.put(:elixir_compiler_dest, path)
|
||||
:elixir_compiler.file_to_path(file, path, &each_file(&1, &2, parent))
|
||||
|
||||
:compile ->
|
||||
:erlang.process_flag(:error_handler, Kernel.ErrorHandler)
|
||||
:erlang.put(:elixir_compiler_dest, dest)
|
||||
:elixir_compiler.file(file, &each_file(&1, &2, parent))
|
||||
|
||||
:require ->
|
||||
case :elixir_code_server.call({:acquire, file}) do
|
||||
:required ->
|
||||
send(parent, {:file_cancel, self()})
|
||||
|
||||
:proceed ->
|
||||
:elixir_compiler.file(file, &each_file(&1, &2, parent))
|
||||
:elixir_code_server.cast({:required, file})
|
||||
end
|
||||
end
|
||||
catch
|
||||
kind, reason ->
|
||||
send(parent, {:file_error, self(), file, {kind, reason, __STACKTRACE__}})
|
||||
end
|
||||
|
||||
exit(:shutdown)
|
||||
end)
|
||||
|
||||
timer_ref = Process.send_after(self(), {:timed_out, pid}, threshold * 1000)
|
||||
files = [{pid, ref, file, timer_ref} | files]
|
||||
spawn_workers(queue, spawned + 1, waiting, files, result, warnings, state)
|
||||
end
|
||||
|
||||
# No more queue, nothing waiting, this cycle is done
|
||||
defp spawn_workers([], 0, [], [], result, warnings, state) do
|
||||
case state.each_cycle.() do
|
||||
[] ->
|
||||
modules = for {{:module, mod}, _} <- result, do: mod
|
||||
warnings = Enum.reverse(warnings)
|
||||
{:ok, modules, warnings}
|
||||
|
||||
more ->
|
||||
spawn_workers(more, 0, [], [], result, warnings, state)
|
||||
end
|
||||
end
|
||||
|
||||
# files x, waiting for x: POSSIBLE ERROR! Release processes so we get the failures
|
||||
|
||||
# Single entry, just release it.
|
||||
defp spawn_workers(
|
||||
[],
|
||||
1,
|
||||
[{_, pid, ref, _, _, _}] = waiting,
|
||||
[{pid, _, _, _}] = files,
|
||||
result,
|
||||
warnings,
|
||||
state
|
||||
) do
|
||||
spawn_workers([{ref, :not_found}], 1, waiting, files, result, warnings, state)
|
||||
end
|
||||
|
||||
# Multiple entries, try to release modules.
|
||||
defp spawn_workers([], spawned, waiting, files, result, warnings, state)
|
||||
when length(waiting) == spawned do
|
||||
# There is potentially a deadlock. We will release modules with
|
||||
# the following order:
|
||||
#
|
||||
# 1. Code.ensure_compiled?/1 checks (deadlock = soft)
|
||||
# 2. Struct checks (deadlock = hard)
|
||||
# 3. Modules without a known definition
|
||||
# 4. Code invocation (deadlock = raise)
|
||||
#
|
||||
# In theory there is no difference between hard and raise, the
|
||||
# difference is where the raise is happening, inside the compiler
|
||||
# or in the caller.
|
||||
cond do
|
||||
deadlocked = deadlocked(waiting, :soft) || deadlocked(waiting, :hard) ->
|
||||
spawn_workers(deadlocked, spawned, waiting, files, result, warnings, state)
|
||||
|
||||
without_definition = without_definition(waiting, files) ->
|
||||
spawn_workers(without_definition, spawned, waiting, files, result, warnings, state)
|
||||
|
||||
true ->
|
||||
errors = handle_deadlock(waiting, files)
|
||||
{:error, errors, warnings}
|
||||
end
|
||||
end
|
||||
|
||||
# No more queue, but spawned and length(waiting) do not match
|
||||
defp spawn_workers([], spawned, waiting, files, result, warnings, state) do
|
||||
wait_for_messages([], spawned, waiting, files, result, warnings, state)
|
||||
end
|
||||
|
||||
# The goal of this function is to find leaves in the dependency graph,
|
||||
# i.e. to find code that depends on code that we know is not being defined.
|
||||
defp without_definition(waiting, files) do
|
||||
nillify_empty(
|
||||
for {pid, _, _, _} <- files,
|
||||
{_, ^pid, ref, on, _, _} = List.keyfind(waiting, pid, 1),
|
||||
not Enum.any?(waiting, fn {_, _, _, _, defining, _} -> on in defining end),
|
||||
do: {ref, :not_found}
|
||||
)
|
||||
end
|
||||
|
||||
defp deadlocked(waiting, type) do
|
||||
nillify_empty(for {_, _, ref, _, _, ^type} <- waiting, do: {ref, :not_found})
|
||||
end
|
||||
|
||||
defp nillify_empty([]), do: nil
|
||||
defp nillify_empty([_ | _] = list), do: list
|
||||
|
||||
# Wait for messages from child processes
|
||||
defp wait_for_messages(queue, spawned, waiting, files, result, warnings, state) do
|
||||
%{output: output} = state
|
||||
|
||||
receive do
|
||||
{:async, process} ->
|
||||
Process.monitor(process)
|
||||
wait_for_messages(queue, spawned + 1, waiting, files, result, warnings, state)
|
||||
|
||||
{:available, kind, module} ->
|
||||
available =
|
||||
for {^kind, _, ref, ^module, _defining, _deadlock} <- waiting,
|
||||
do: {ref, :found}
|
||||
|
||||
result = Map.put(result, {kind, module}, true)
|
||||
spawn_workers(available ++ queue, spawned, waiting, files, result, warnings, state)
|
||||
|
||||
{:module_available, child, ref, file, module, binary} ->
|
||||
state.each_module.(file, module, binary)
|
||||
|
||||
# Release the module loader which is waiting for an ack
|
||||
send(child, {ref, :ack})
|
||||
|
||||
available =
|
||||
for {:module, _, ref, ^module, _defining, _deadlock} <- waiting,
|
||||
do: {ref, :found}
|
||||
|
||||
cancel_waiting_timer(files, child)
|
||||
result = Map.put(result, {:module, module}, true)
|
||||
spawn_workers(available ++ queue, spawned, waiting, files, result, warnings, state)
|
||||
|
||||
# If we are simply requiring files, we do not add to waiting.
|
||||
{:waiting, _kind, child, ref, _on, _defining, _deadlock} when output == :require ->
|
||||
send(child, {ref, :not_found})
|
||||
spawn_workers(queue, spawned, waiting, files, result, warnings, state)
|
||||
|
||||
{:waiting, kind, child, ref, on, defining, deadlock?} ->
|
||||
# If we already got what we were waiting for, do not put it on waiting.
|
||||
# Alternatively, we're waiting on ourselves,
|
||||
# send :found so that we can crash with a better error.
|
||||
waiting =
|
||||
if Map.has_key?(result, {kind, on}) or on in defining do
|
||||
send(child, {ref, :found})
|
||||
waiting
|
||||
else
|
||||
[{kind, child, ref, on, defining, deadlock?} | waiting]
|
||||
end
|
||||
|
||||
spawn_workers(queue, spawned, waiting, files, result, warnings, state)
|
||||
|
||||
{:timed_out, child} ->
|
||||
case List.keyfind(files, child, 0) do
|
||||
{^child, _, file, _} -> state.each_long_compilation.(file)
|
||||
_ -> :ok
|
||||
end
|
||||
|
||||
spawn_workers(queue, spawned, waiting, files, result, warnings, state)
|
||||
|
||||
{:warning, file, line, message} ->
|
||||
file = file && Path.absname(file)
|
||||
message = :unicode.characters_to_binary(message)
|
||||
warning = {file, line, message}
|
||||
wait_for_messages(queue, spawned, waiting, files, result, [warning | warnings], state)
|
||||
|
||||
{:file_ok, child_pid, ref, file, lexical} ->
|
||||
state.each_file.(file, lexical)
|
||||
send(child_pid, ref)
|
||||
cancel_waiting_timer(files, child_pid)
|
||||
|
||||
discard_down(child_pid)
|
||||
new_files = List.keydelete(files, child_pid, 0)
|
||||
|
||||
# Sometimes we may have spurious entries in the waiting list
|
||||
# because someone invoked try/rescue UndefinedFunctionError
|
||||
new_waiting = List.keydelete(waiting, child_pid, 1)
|
||||
spawn_workers(queue, spawned - 1, new_waiting, new_files, result, warnings, state)
|
||||
|
||||
{:file_cancel, child_pid} ->
|
||||
cancel_waiting_timer(files, child_pid)
|
||||
discard_down(child_pid)
|
||||
new_files = List.keydelete(files, child_pid, 0)
|
||||
spawn_workers(queue, spawned - 1, waiting, new_files, result, warnings, state)
|
||||
|
||||
{:file_error, child_pid, file, {kind, reason, stack}} ->
|
||||
print_error(file, kind, reason, stack)
|
||||
cancel_waiting_timer(files, child_pid)
|
||||
discard_down(child_pid)
|
||||
files |> List.keydelete(child_pid, 0) |> terminate()
|
||||
{:error, [to_error(file, kind, reason, stack)], warnings}
|
||||
|
||||
{:DOWN, ref, :process, pid, reason} ->
|
||||
waiting = List.keydelete(waiting, pid, 1)
|
||||
|
||||
case handle_down(files, ref, reason) do
|
||||
:ok -> wait_for_messages(queue, spawned - 1, waiting, files, result, warnings, state)
|
||||
{:error, errors} -> {:error, errors, warnings}
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defp discard_down(pid) do
|
||||
receive do
|
||||
{:DOWN, _, :process, ^pid, _} -> :ok
|
||||
end
|
||||
end
|
||||
|
||||
defp handle_down(_files, _ref, :normal) do
|
||||
:ok
|
||||
end
|
||||
|
||||
defp handle_down(files, ref, reason) do
|
||||
case List.keyfind(files, ref, 1) do
|
||||
{child_pid, ^ref, file, _timer_ref} ->
|
||||
print_error(file, :exit, reason, [])
|
||||
|
||||
files
|
||||
|> List.keydelete(child_pid, 0)
|
||||
|> terminate()
|
||||
|
||||
{:error, [to_error(file, :exit, reason, [])]}
|
||||
|
||||
_ ->
|
||||
:ok
|
||||
end
|
||||
end
|
||||
|
||||
defp handle_deadlock(waiting, files) do
|
||||
deadlock =
|
||||
for {pid, _, file, _} <- files do
|
||||
{:current_stacktrace, stacktrace} = Process.info(pid, :current_stacktrace)
|
||||
Process.exit(pid, :kill)
|
||||
|
||||
{kind, ^pid, _, on, _, _} = List.keyfind(waiting, pid, 1)
|
||||
description = "deadlocked waiting on #{kind} #{inspect(on)}"
|
||||
error = CompileError.exception(description: description, file: nil, line: nil)
|
||||
print_error(file, :error, error, stacktrace)
|
||||
{Path.relative_to_cwd(file), on, description}
|
||||
end
|
||||
|
||||
IO.puts("""
|
||||
|
||||
Compilation failed because of a deadlock between files.
|
||||
The following files depended on the following modules:
|
||||
""")
|
||||
|
||||
max =
|
||||
deadlock
|
||||
|> Enum.map(&(&1 |> elem(0) |> String.length()))
|
||||
|> Enum.max()
|
||||
|
||||
for {file, mod, _} <- deadlock do
|
||||
IO.puts([" ", String.pad_leading(file, max), " => " | inspect(mod)])
|
||||
end
|
||||
|
||||
IO.puts(
|
||||
"\nEnsure there are no compile-time dependencies between those files " <>
|
||||
"and that the modules they reference exist and are correctly named\n"
|
||||
)
|
||||
|
||||
for {file, _, description} <- deadlock, do: {Path.absname(file), nil, description}
|
||||
end
|
||||
|
||||
defp terminate(files) do
|
||||
for {pid, _, _, _} <- files, do: Process.exit(pid, :kill)
|
||||
for {pid, _, _, _} <- files, do: discard_down(pid)
|
||||
:ok
|
||||
end
|
||||
|
||||
defp print_error(file, kind, reason, stack) do
|
||||
IO.write([
|
||||
"\n== Compilation error in file #{Path.relative_to_cwd(file)} ==\n",
|
||||
Kernel.CLI.format_error(kind, reason, stack)
|
||||
])
|
||||
end
|
||||
|
||||
defp cancel_waiting_timer(files, child_pid) do
|
||||
case List.keyfind(files, child_pid, 0) do
|
||||
{^child_pid, _ref, _file, timer_ref} ->
|
||||
Process.cancel_timer(timer_ref)
|
||||
# Let's flush the message in case it arrived before we canceled the timeout.
|
||||
receive do
|
||||
{:timed_out, ^child_pid} -> :ok
|
||||
after
|
||||
0 -> :ok
|
||||
end
|
||||
|
||||
nil ->
|
||||
:ok
|
||||
end
|
||||
end
|
||||
|
||||
defp to_error(file, kind, reason, stack) do
|
||||
line = get_line(file, reason, stack)
|
||||
file = Path.absname(file)
|
||||
message = :unicode.characters_to_binary(Kernel.CLI.format_error(kind, reason, stack))
|
||||
{file, line, message}
|
||||
end
|
||||
|
||||
defp get_line(_file, %{line: line}, _stack) when is_integer(line) and line > 0 do
|
||||
line
|
||||
end
|
||||
|
||||
defp get_line(file, :undef, [{_, _, _, []}, {_, _, _, info} | _]) do
|
||||
if Keyword.get(info, :file) == to_charlist(Path.relative_to_cwd(file)) do
|
||||
Keyword.get(info, :line)
|
||||
end
|
||||
end
|
||||
|
||||
defp get_line(file, _reason, [{_, _, _, info} | _]) do
|
||||
if Keyword.get(info, :file) == to_charlist(Path.relative_to_cwd(file)) do
|
||||
Keyword.get(info, :line)
|
||||
end
|
||||
end
|
||||
|
||||
defp get_line(_, _, _) do
|
||||
nil
|
||||
end
|
||||
end
|
||||
@@ -1,17 +0,0 @@
|
||||
defmodule Kernel.ParallelRequire do
|
||||
@moduledoc false
|
||||
|
||||
@deprecated "Use Kernel.ParallelCompiler.require/2 instead"
|
||||
def files(files, callbacks \\ [])
|
||||
|
||||
def files(files, callback) when is_function(callback, 1) do
|
||||
files(files, each_file: callback)
|
||||
end
|
||||
|
||||
def files(files, options) when is_list(options) do
|
||||
case Kernel.ParallelCompiler.require(files, options) do
|
||||
{:ok, modules, _} -> modules
|
||||
{:error, _, _} -> exit({:shutdown, 1})
|
||||
end
|
||||
end
|
||||
end
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,999 +0,0 @@
|
||||
defmodule Kernel.Typespec do
|
||||
@moduledoc false
|
||||
|
||||
## Deprecated API moved to Code.Typespec
|
||||
|
||||
@doc false
|
||||
@deprecated "Use Code.Typespec.spec_to_quoted/2 instead"
|
||||
def spec_to_ast(name, spec) do
|
||||
Code.Typespec.spec_to_quoted(name, spec)
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated "Use Code.Typespec.type_to_quoted/1 instead"
|
||||
def type_to_ast(type) do
|
||||
Code.Typespec.type_to_quoted(type)
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated "Use Code.fetch_docs/1 instead"
|
||||
def beam_typedocs(module) when is_atom(module) or is_binary(module) do
|
||||
case Code.fetch_docs(module) do
|
||||
{:docs_v1, _, _, _, _, _, docs} ->
|
||||
for {{:type, name, arity}, _, _, doc, _} <- docs do
|
||||
case doc do
|
||||
:none -> {{name, arity}, nil}
|
||||
:hidden -> {{name, arity}, false}
|
||||
%{"en" => doc_string} -> {{name, arity}, doc_string}
|
||||
end
|
||||
end
|
||||
|
||||
{:error, _} ->
|
||||
nil
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated "Use Code.Typespec.fetch_types/1 instead"
|
||||
def beam_types(module) when is_atom(module) or is_binary(module) do
|
||||
case Code.Typespec.fetch_types(module) do
|
||||
{:ok, types} -> types
|
||||
:error -> nil
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated "Use Code.Typespec.fetch_specs/1 instead"
|
||||
def beam_specs(module) when is_atom(module) or is_binary(module) do
|
||||
case Code.Typespec.fetch_specs(module) do
|
||||
{:ok, specs} -> specs
|
||||
:error -> nil
|
||||
end
|
||||
end
|
||||
|
||||
@doc false
|
||||
@deprecated "Use Code.Typespec.fetch_callbacks/1 instead"
|
||||
def beam_callbacks(module) when is_atom(module) or is_binary(module) do
|
||||
case Code.Typespec.fetch_callbacks(module) do
|
||||
{:ok, callbacks} -> callbacks
|
||||
:error -> nil
|
||||
end
|
||||
end
|
||||
|
||||
## Hooks for Module functions
|
||||
|
||||
def defines_type?(module, {name, arity} = signature)
|
||||
when is_atom(module) and is_atom(name) and arity in 0..255 do
|
||||
{_set, bag} = :elixir_module.data_tables(module)
|
||||
|
||||
finder = fn {_kind, expr, _caller} ->
|
||||
type_to_signature(expr) == signature
|
||||
end
|
||||
|
||||
:lists.any(finder, get_typespecs(bag, [:type, :opaque, :typep]))
|
||||
end
|
||||
|
||||
def spec_to_callback(module, {name, arity} = signature)
|
||||
when is_atom(module) and is_atom(name) and arity in 0..255 do
|
||||
{set, bag} = :elixir_module.data_tables(module)
|
||||
|
||||
filter = fn {:spec, expr, pos} ->
|
||||
if spec_to_signature(expr) == signature do
|
||||
kind = :callback
|
||||
store_typespec(bag, kind, expr, pos)
|
||||
|
||||
case :ets.lookup(set, {:function, name, arity}) do
|
||||
[{{:function, ^name, ^arity}, line, _, doc, doc_meta}] ->
|
||||
store_doc(set, kind, name, arity, line, :doc, doc, doc_meta)
|
||||
|
||||
_ ->
|
||||
nil
|
||||
end
|
||||
|
||||
true
|
||||
else
|
||||
false
|
||||
end
|
||||
end
|
||||
|
||||
:lists.filter(filter, get_typespecs(bag, :spec)) != []
|
||||
end
|
||||
|
||||
## Typespec definition and storage
|
||||
|
||||
@doc """
|
||||
Defines a typespec.
|
||||
|
||||
Invoked by `Kernel.@/1` expansion.
|
||||
"""
|
||||
def deftypespec(:spec, expr, _line, _file, module, pos) do
|
||||
{_set, bag} = :elixir_module.data_tables(module)
|
||||
store_typespec(bag, :spec, expr, pos)
|
||||
end
|
||||
|
||||
def deftypespec(kind, expr, line, _file, module, pos)
|
||||
when kind in [:callback, :macrocallback] do
|
||||
{set, bag} = :elixir_module.data_tables(module)
|
||||
|
||||
case spec_to_signature(expr) do
|
||||
{name, arity} ->
|
||||
# store doc only once in case callback has multiple clauses
|
||||
unless :ets.member(set, {kind, name, arity}) do
|
||||
{line, doc} = get_doc_info(set, :doc, line)
|
||||
store_doc(set, kind, name, arity, line, :doc, doc, %{})
|
||||
end
|
||||
|
||||
:error ->
|
||||
:error
|
||||
end
|
||||
|
||||
store_typespec(bag, kind, expr, pos)
|
||||
end
|
||||
|
||||
def deftypespec(kind, expr, line, file, module, pos)
|
||||
when kind in [:type, :typep, :opaque] do
|
||||
{set, bag} = :elixir_module.data_tables(module)
|
||||
|
||||
case type_to_signature(expr) do
|
||||
{name, arity} when kind == :typep ->
|
||||
{line, doc} = get_doc_info(set, :typedoc, line)
|
||||
|
||||
if doc do
|
||||
warning =
|
||||
"type #{name}/#{arity} is private, @typedoc's are always discarded for private types"
|
||||
|
||||
:elixir_errors.erl_warn(line, file, warning)
|
||||
end
|
||||
|
||||
{name, arity} ->
|
||||
{line, doc} = get_doc_info(set, :typedoc, line)
|
||||
spec_meta = if kind == :opaque, do: %{opaque: true}, else: %{}
|
||||
store_doc(set, :type, name, arity, line, :typedoc, doc, spec_meta)
|
||||
|
||||
:error ->
|
||||
:error
|
||||
end
|
||||
|
||||
store_typespec(bag, kind, expr, pos)
|
||||
end
|
||||
|
||||
defp get_typespecs(bag, keys) when is_list(keys) do
|
||||
:lists.flatmap(&get_typespecs(bag, &1), keys)
|
||||
end
|
||||
|
||||
defp get_typespecs(bag, key) do
|
||||
:ets.lookup_element(bag, {:accumulate, key}, 2)
|
||||
catch
|
||||
:error, :badarg -> []
|
||||
end
|
||||
|
||||
defp take_typespecs(bag, keys) when is_list(keys) do
|
||||
:lists.flatmap(&take_typespecs(bag, &1), keys)
|
||||
end
|
||||
|
||||
defp take_typespecs(bag, key) do
|
||||
:lists.map(&elem(&1, 1), :ets.take(bag, {:accumulate, key}))
|
||||
end
|
||||
|
||||
defp store_typespec(bag, key, expr, pos) do
|
||||
:ets.insert(bag, {{:accumulate, key}, {key, expr, pos}})
|
||||
:ok
|
||||
end
|
||||
|
||||
defp store_doc(set, kind, name, arity, line, doc_kind, doc, spec_meta) do
|
||||
doc_meta = get_doc_meta(spec_meta, doc_kind, set)
|
||||
:ets.insert(set, {{kind, name, arity}, line, doc, doc_meta})
|
||||
end
|
||||
|
||||
defp get_doc_info(set, attr, line) do
|
||||
case :ets.take(set, attr) do
|
||||
[{^attr, {line, doc}, _}] -> {line, doc}
|
||||
[] -> {line, nil}
|
||||
end
|
||||
end
|
||||
|
||||
defp get_doc_meta(spec_meta, doc_kind, set) do
|
||||
case :ets.take(set, {doc_kind, :meta}) do
|
||||
[{{^doc_kind, :meta}, metadata, _}] -> Map.merge(metadata, spec_meta)
|
||||
[] -> spec_meta
|
||||
end
|
||||
end
|
||||
|
||||
defp spec_to_signature({:when, _, [spec, _]}), do: type_to_signature(spec)
|
||||
defp spec_to_signature(other), do: type_to_signature(other)
|
||||
|
||||
defp type_to_signature({:"::", _, [{name, _, context}, _]})
|
||||
when is_atom(name) and name != :"::" and is_atom(context),
|
||||
do: {name, 0}
|
||||
|
||||
defp type_to_signature({:"::", _, [{name, _, args}, _]}) when is_atom(name) and name != :"::",
|
||||
do: {name, length(args)}
|
||||
|
||||
defp type_to_signature(_), do: :error
|
||||
|
||||
## Translation from Elixir AST to typespec AST
|
||||
|
||||
@doc false
|
||||
def translate_typespecs_for_module(_set, bag) do
|
||||
type_typespecs = take_typespecs(bag, [:type, :opaque, :typep])
|
||||
defined_type_pairs = collect_defined_type_pairs(type_typespecs)
|
||||
|
||||
state = %{
|
||||
defined_type_pairs: defined_type_pairs,
|
||||
used_type_pairs: [],
|
||||
local_vars: %{},
|
||||
undefined_type_error_enabled?: true
|
||||
}
|
||||
|
||||
{types, state} = :lists.mapfoldl(&translate_type/2, state, type_typespecs)
|
||||
{specs, state} = :lists.mapfoldl(&translate_spec/2, state, take_typespecs(bag, :spec))
|
||||
{callbacks, state} = :lists.mapfoldl(&translate_spec/2, state, take_typespecs(bag, :callback))
|
||||
|
||||
{macrocallbacks, state} =
|
||||
:lists.mapfoldl(&translate_spec/2, state, take_typespecs(bag, :macrocallback))
|
||||
|
||||
optional_callbacks = :lists.flatten(get_typespecs(bag, :optional_callbacks))
|
||||
used_types = filter_used_types(types, state)
|
||||
|
||||
{used_types, specs, callbacks, macrocallbacks, optional_callbacks}
|
||||
end
|
||||
|
||||
defp collect_defined_type_pairs(type_typespecs) do
|
||||
fun = fn {_kind, expr, pos}, type_pairs ->
|
||||
%{file: file, line: line} = env = :elixir_locals.get_cached_env(pos)
|
||||
|
||||
case type_to_signature(expr) do
|
||||
{name, arity} = type_pair ->
|
||||
if built_in_type?(name, arity) do
|
||||
message = "type #{name}/#{arity} is a built-in type and it cannot be redefined"
|
||||
compile_error(env, message)
|
||||
end
|
||||
|
||||
if Map.has_key?(type_pairs, type_pair) do
|
||||
compile_error(env, "type #{name}/#{arity} is already defined")
|
||||
end
|
||||
|
||||
Map.put(type_pairs, type_pair, {file, line})
|
||||
|
||||
:error ->
|
||||
compile_error(env, "invalid type specification: #{Macro.to_string(expr)}")
|
||||
end
|
||||
end
|
||||
|
||||
:lists.foldl(fun, %{}, type_typespecs)
|
||||
end
|
||||
|
||||
defp filter_used_types(types, state) do
|
||||
fun = fn {_kind, {name, arity} = type_pair, _line, _type, export} ->
|
||||
if not export and not :lists.member(type_pair, state.used_type_pairs) do
|
||||
%{^type_pair => {file, line}} = state.defined_type_pairs
|
||||
:elixir_errors.erl_warn(line, file, "type #{name}/#{arity} is unused")
|
||||
false
|
||||
else
|
||||
true
|
||||
end
|
||||
end
|
||||
|
||||
:lists.filter(fun, types)
|
||||
end
|
||||
|
||||
defp translate_type({kind, {:"::", _, [{name, _, args}, definition]}, pos}, state) do
|
||||
caller = :elixir_locals.get_cached_env(pos)
|
||||
state = clean_local_state(state)
|
||||
|
||||
args =
|
||||
if is_atom(args) do
|
||||
[]
|
||||
else
|
||||
for(arg <- args, do: variable(arg))
|
||||
end
|
||||
|
||||
vars = :lists.filter(&match?({:var, _, _}, &1), args)
|
||||
var_names = :lists.map(&elem(&1, 2), vars)
|
||||
state = :lists.foldl(&update_local_vars(&2, &1), state, var_names)
|
||||
{spec, state} = typespec(definition, var_names, caller, state)
|
||||
type = {name, spec, vars}
|
||||
arity = length(args)
|
||||
|
||||
ensure_no_underscore_local_vars!(caller, var_names)
|
||||
ensure_no_unused_local_vars!(caller, state.local_vars)
|
||||
|
||||
{kind, export} =
|
||||
case kind do
|
||||
:type -> {:type, true}
|
||||
:typep -> {:type, false}
|
||||
:opaque -> {:opaque, true}
|
||||
end
|
||||
|
||||
invalid_args = :lists.filter(&(not valid_variable_ast?(&1)), args)
|
||||
|
||||
unless invalid_args == [] do
|
||||
invalid_args = :lists.join(", ", :lists.map(&Macro.to_string/1, invalid_args))
|
||||
|
||||
message =
|
||||
"@type definitions expect all arguments to be variables. The type " <>
|
||||
"#{name}/#{arity} has an invalid argument(s): #{invalid_args}"
|
||||
|
||||
compile_error(caller, message)
|
||||
end
|
||||
|
||||
if underspecified?(kind, arity, spec) do
|
||||
message = "@#{kind} type #{name}/#{arity} is underspecified and therefore meaningless"
|
||||
:elixir_errors.erl_warn(caller.line, caller.file, message)
|
||||
end
|
||||
|
||||
{{kind, {name, arity}, caller.line, type, export}, state}
|
||||
end
|
||||
|
||||
defp valid_variable_ast?({variable_name, _, context})
|
||||
when is_atom(variable_name) and is_atom(context),
|
||||
do: true
|
||||
|
||||
defp valid_variable_ast?(_), do: false
|
||||
|
||||
defp underspecified?(:opaque, 0, {:type, _, type, []}) when type in [:any, :term], do: true
|
||||
defp underspecified?(_kind, _arity, _spec), do: false
|
||||
|
||||
defp translate_spec({kind, {:when, _meta, [spec, guard]}, pos}, state) do
|
||||
caller = :elixir_locals.get_cached_env(pos)
|
||||
translate_spec(kind, spec, guard, caller, state)
|
||||
end
|
||||
|
||||
defp translate_spec({kind, spec, pos}, state) do
|
||||
caller = :elixir_locals.get_cached_env(pos)
|
||||
translate_spec(kind, spec, [], caller, state)
|
||||
end
|
||||
|
||||
defp translate_spec(kind, {:"::", meta, [{name, _, args}, return]}, guard, caller, state)
|
||||
when is_atom(name) and name != :"::" do
|
||||
translate_spec(kind, meta, name, args, return, guard, caller, state)
|
||||
end
|
||||
|
||||
defp translate_spec(_kind, {name, _meta, _args} = spec, _guard, caller, _state)
|
||||
when is_atom(name) and name != :"::" do
|
||||
spec = Macro.to_string(spec)
|
||||
compile_error(caller, "type specification missing return type: #{spec}")
|
||||
end
|
||||
|
||||
defp translate_spec(_kind, spec, _guard, caller, _state) do
|
||||
spec = Macro.to_string(spec)
|
||||
compile_error(caller, "invalid type specification: #{spec}")
|
||||
end
|
||||
|
||||
defp translate_spec(kind, meta, name, args, return, guard, caller, state) when is_atom(args),
|
||||
do: translate_spec(kind, meta, name, [], return, guard, caller, state)
|
||||
|
||||
defp translate_spec(kind, meta, name, args, return, guard, caller, state) do
|
||||
ensure_no_defaults!(args)
|
||||
state = clean_local_state(state)
|
||||
|
||||
unless Keyword.keyword?(guard) do
|
||||
error = "expected keywords as guard in type specification, got: #{Macro.to_string(guard)}"
|
||||
compile_error(caller, error)
|
||||
end
|
||||
|
||||
line = line(meta)
|
||||
vars = Keyword.keys(guard)
|
||||
{fun_args, state} = fn_args(meta, args, return, vars, caller, state)
|
||||
spec = {:type, line, :fun, fun_args}
|
||||
|
||||
{spec, state} =
|
||||
case guard_to_constraints(guard, vars, meta, caller, state) do
|
||||
{[], state} -> {spec, state}
|
||||
{constraints, state} -> {{:type, line, :bounded_fun, [spec, constraints]}, state}
|
||||
end
|
||||
|
||||
ensure_no_unused_local_vars!(caller, state.local_vars)
|
||||
|
||||
arity = length(args)
|
||||
{{kind, {name, arity}, caller.line, spec}, state}
|
||||
end
|
||||
|
||||
# TODO: Remove char_list type by v2.0
|
||||
defp built_in_type?(:char_list, 0), do: true
|
||||
defp built_in_type?(:charlist, 0), do: true
|
||||
defp built_in_type?(:as_boolean, 1), do: true
|
||||
defp built_in_type?(:struct, 0), do: true
|
||||
defp built_in_type?(:nonempty_charlist, 0), do: true
|
||||
defp built_in_type?(:keyword, 0), do: true
|
||||
defp built_in_type?(:keyword, 1), do: true
|
||||
defp built_in_type?(:var, 0), do: true
|
||||
defp built_in_type?(name, arity), do: :erl_internal.is_type(name, arity)
|
||||
|
||||
defp ensure_no_defaults!(args) do
|
||||
fun = fn
|
||||
{:"::", _, [left, right]} ->
|
||||
ensure_not_default(left)
|
||||
ensure_not_default(right)
|
||||
left
|
||||
|
||||
other ->
|
||||
ensure_not_default(other)
|
||||
other
|
||||
end
|
||||
|
||||
:lists.foreach(fun, args)
|
||||
end
|
||||
|
||||
defp ensure_not_default({:\\, _, [_, _]}) do
|
||||
raise ArgumentError, "default arguments \\\\ not supported in typespecs"
|
||||
end
|
||||
|
||||
defp ensure_not_default(_), do: :ok
|
||||
|
||||
defp guard_to_constraints(guard, vars, meta, caller, state) do
|
||||
line = line(meta)
|
||||
|
||||
fun = fn
|
||||
{_name, {:var, _, context}}, {constraints, state} when is_atom(context) ->
|
||||
{constraints, state}
|
||||
|
||||
{name, type}, {constraints, state} ->
|
||||
{spec, state} = typespec(type, vars, caller, state)
|
||||
constraint = [{:atom, line, :is_subtype}, [{:var, line, name}, spec]]
|
||||
state = update_local_vars(state, name)
|
||||
{[{:type, line, :constraint, constraint} | constraints], state}
|
||||
end
|
||||
|
||||
{constraints, state} = :lists.foldl(fun, {[], state}, guard)
|
||||
{:lists.reverse(constraints), state}
|
||||
end
|
||||
|
||||
## To typespec conversion
|
||||
|
||||
defp line(meta) do
|
||||
Keyword.get(meta, :line, 0)
|
||||
end
|
||||
|
||||
# Handle unions
|
||||
defp typespec({:|, meta, [_, _]} = exprs, vars, caller, state) do
|
||||
exprs = collect_union(exprs)
|
||||
{union, state} = :lists.mapfoldl(&typespec(&1, vars, caller, &2), state, exprs)
|
||||
{{:type, line(meta), :union, union}, state}
|
||||
end
|
||||
|
||||
# Handle binaries
|
||||
defp typespec({:<<>>, meta, []}, _, _, state) do
|
||||
line = line(meta)
|
||||
{{:type, line, :binary, [{:integer, line, 0}, {:integer, line, 0}]}, state}
|
||||
end
|
||||
|
||||
defp typespec(
|
||||
{:<<>>, meta, [{:"::", unit_meta, [{:_, _, ctx1}, {:*, _, [{:_, _, ctx2}, unit]}]}]},
|
||||
_,
|
||||
_,
|
||||
state
|
||||
)
|
||||
when is_atom(ctx1) and is_atom(ctx2) and is_integer(unit) and unit >= 0 do
|
||||
line = line(meta)
|
||||
{{:type, line, :binary, [{:integer, line, 0}, {:integer, line(unit_meta), unit}]}, state}
|
||||
end
|
||||
|
||||
defp typespec({:<<>>, meta, [{:"::", size_meta, [{:_, _, ctx}, size]}]}, _, _, state)
|
||||
when is_atom(ctx) and is_integer(size) and size >= 0 do
|
||||
line = line(meta)
|
||||
{{:type, line, :binary, [{:integer, line(size_meta), size}, {:integer, line, 0}]}, state}
|
||||
end
|
||||
|
||||
defp typespec(
|
||||
{
|
||||
:<<>>,
|
||||
meta,
|
||||
[
|
||||
{:"::", size_meta, [{:_, _, ctx1}, size]},
|
||||
{:"::", unit_meta, [{:_, _, ctx2}, {:*, _, [{:_, _, ctx3}, unit]}]}
|
||||
]
|
||||
},
|
||||
_,
|
||||
_,
|
||||
state
|
||||
)
|
||||
when is_atom(ctx1) and is_atom(ctx2) and is_atom(ctx3) and is_integer(size) and
|
||||
is_integer(unit) and size >= 0 and unit >= 0 do
|
||||
args = [{:integer, line(size_meta), size}, {:integer, line(unit_meta), unit}]
|
||||
{{:type, line(meta), :binary, args}, state}
|
||||
end
|
||||
|
||||
defp typespec({:<<>>, _meta, _args}, _vars, caller, _state) do
|
||||
message =
|
||||
"invalid binary specification, expected <<_::size>>, <<_::_*unit>>, " <>
|
||||
"or <<_::size, _::_*unit>> with size and unit being non-negative integers"
|
||||
|
||||
compile_error(caller, message)
|
||||
end
|
||||
|
||||
## Handle maps and structs
|
||||
defp typespec({:map, meta, args}, _vars, _caller, state) when args == [] or is_atom(args) do
|
||||
{{:type, line(meta), :map, :any}, state}
|
||||
end
|
||||
|
||||
defp typespec({:%{}, meta, fields} = map, vars, caller, state) do
|
||||
fun = fn
|
||||
{{:required, meta2, [k]}, v}, state ->
|
||||
{arg1, state} = typespec(k, vars, caller, state)
|
||||
{arg2, state} = typespec(v, vars, caller, state)
|
||||
{{:type, line(meta2), :map_field_exact, [arg1, arg2]}, state}
|
||||
|
||||
{{:optional, meta2, [k]}, v}, state ->
|
||||
{arg1, state} = typespec(k, vars, caller, state)
|
||||
{arg2, state} = typespec(v, vars, caller, state)
|
||||
{{:type, line(meta2), :map_field_assoc, [arg1, arg2]}, state}
|
||||
|
||||
{k, v}, state ->
|
||||
{arg1, state} = typespec(k, vars, caller, state)
|
||||
{arg2, state} = typespec(v, vars, caller, state)
|
||||
{{:type, line(meta), :map_field_exact, [arg1, arg2]}, state}
|
||||
|
||||
{:|, _, [_, _]}, _state ->
|
||||
error =
|
||||
"invalid map specification. When using the | operator in the map key, " <>
|
||||
"make sure to wrap the key type in parentheses: #{Macro.to_string(map)}"
|
||||
|
||||
compile_error(caller, error)
|
||||
|
||||
_, _state ->
|
||||
compile_error(caller, "invalid map specification: #{Macro.to_string(map)}")
|
||||
end
|
||||
|
||||
{fields, state} = :lists.mapfoldl(fun, state, fields)
|
||||
{{:type, line(meta), :map, fields}, state}
|
||||
end
|
||||
|
||||
defp typespec({:%, _, [name, {:%{}, meta, fields}]}, vars, caller, state) do
|
||||
# We cannot set a function name to avoid tracking
|
||||
# as a compile time dependency, because for structs it actually is one.
|
||||
module = Macro.expand(name, caller)
|
||||
|
||||
struct =
|
||||
module
|
||||
|> Macro.struct!(caller)
|
||||
|> Map.delete(:__struct__)
|
||||
|> Map.to_list()
|
||||
|
||||
unless Keyword.keyword?(fields) do
|
||||
compile_error(caller, "expected key-value pairs in struct #{Macro.to_string(name)}")
|
||||
end
|
||||
|
||||
types =
|
||||
:lists.map(
|
||||
fn {field, _} -> {field, Keyword.get(fields, field, quote(do: term()))} end,
|
||||
:lists.sort(struct)
|
||||
)
|
||||
|
||||
fun = fn {field, _} ->
|
||||
unless Keyword.has_key?(struct, field) do
|
||||
compile_error(
|
||||
caller,
|
||||
"undefined field #{inspect(field)} on struct #{Macro.to_string(name)}"
|
||||
)
|
||||
end
|
||||
end
|
||||
|
||||
:lists.foreach(fun, fields)
|
||||
typespec({:%{}, meta, [__struct__: module] ++ types}, vars, caller, state)
|
||||
end
|
||||
|
||||
# Handle records
|
||||
defp typespec({:record, meta, [atom]}, vars, caller, state) do
|
||||
typespec({:record, meta, [atom, []]}, vars, caller, state)
|
||||
end
|
||||
|
||||
defp typespec({:record, meta, [tag, field_specs]}, vars, caller, state)
|
||||
when is_atom(tag) and is_list(field_specs) do
|
||||
# We cannot set a function name to avoid tracking
|
||||
# as a compile time dependency because for records it actually is one.
|
||||
case Macro.expand({tag, [], [{:{}, [], []}]}, caller) do
|
||||
{_, _, [name, fields | _]} when is_list(fields) ->
|
||||
types =
|
||||
:lists.map(
|
||||
fn {field, _} ->
|
||||
{:"::", [],
|
||||
[
|
||||
{field, [], nil},
|
||||
Keyword.get(field_specs, field, quote(do: term()))
|
||||
]}
|
||||
end,
|
||||
fields
|
||||
)
|
||||
|
||||
fun = fn {field, _} ->
|
||||
unless Keyword.has_key?(fields, field) do
|
||||
compile_error(caller, "undefined field #{field} on record #{inspect(tag)}")
|
||||
end
|
||||
end
|
||||
|
||||
:lists.foreach(fun, field_specs)
|
||||
typespec({:{}, meta, [name | types]}, vars, caller, state)
|
||||
|
||||
_ ->
|
||||
compile_error(caller, "unknown record #{inspect(tag)}")
|
||||
end
|
||||
end
|
||||
|
||||
defp typespec({:record, _meta, [_tag, _field_specs]}, _vars, caller, _state) do
|
||||
message = "invalid record specification, expected the record name to be an atom literal"
|
||||
compile_error(caller, message)
|
||||
end
|
||||
|
||||
# Handle ranges
|
||||
defp typespec({:.., meta, [left, right]}, vars, caller, state) do
|
||||
{left, state} = typespec(left, vars, caller, state)
|
||||
{right, state} = typespec(right, vars, caller, state)
|
||||
:ok = validate_range(left, right, caller)
|
||||
|
||||
{{:type, line(meta), :range, [left, right]}, state}
|
||||
end
|
||||
|
||||
# Handle special forms
|
||||
defp typespec({:__MODULE__, _, atom}, vars, caller, state) when is_atom(atom) do
|
||||
typespec(caller.module, vars, caller, state)
|
||||
end
|
||||
|
||||
defp typespec({:__aliases__, _, _} = alias, vars, caller, state) do
|
||||
# We set a function name to avoid tracking
|
||||
# aliases in typespecs as compile time dependencies.
|
||||
atom = Macro.expand(alias, %{caller | function: {:typespec, 0}})
|
||||
typespec(atom, vars, caller, state)
|
||||
end
|
||||
|
||||
# Handle funs
|
||||
defp typespec([{:->, meta, [args, return]}], vars, caller, state)
|
||||
when is_list(args) do
|
||||
{args, state} = fn_args(meta, args, return, vars, caller, state)
|
||||
{{:type, line(meta), :fun, args}, state}
|
||||
end
|
||||
|
||||
# Handle type operator
|
||||
defp typespec(
|
||||
{:"::", meta, [{var_name, var_meta, context}, expr]} = ann_type,
|
||||
vars,
|
||||
caller,
|
||||
state
|
||||
)
|
||||
when is_atom(var_name) and is_atom(context) do
|
||||
case typespec(expr, vars, caller, state) do
|
||||
{{:ann_type, _, _}, _state} ->
|
||||
message =
|
||||
"invalid type annotation. Type annotations cannot be nested: " <>
|
||||
"#{Macro.to_string(ann_type)}"
|
||||
|
||||
# TODO: Make this an error on v2.0 and remove the code below
|
||||
:elixir_errors.erl_warn(caller.line, caller.file, message)
|
||||
|
||||
# This may be generating an invalid typespec but we need to generate it
|
||||
# to avoid breaking existing code that was valid but only broke dialyzer
|
||||
{right, state} = typespec(expr, vars, caller, state)
|
||||
{{:ann_type, line(meta), [{:var, line(var_meta), var_name}, right]}, state}
|
||||
|
||||
{right, state} ->
|
||||
{{:ann_type, line(meta), [{:var, line(var_meta), var_name}, right]}, state}
|
||||
end
|
||||
end
|
||||
|
||||
defp typespec({:"::", meta, [left, right]} = expr, vars, caller, state) do
|
||||
message =
|
||||
"invalid type annotation. When using the | operator to represent the union of types, " <>
|
||||
"make sure to wrap type annotations in parentheses: #{Macro.to_string(expr)}"
|
||||
|
||||
# TODO: Make this an error on v2.0, and remove the code below and
|
||||
# the :undefined_type_error_enabled? key from the state
|
||||
:elixir_errors.erl_warn(caller.line, caller.file, message)
|
||||
|
||||
# This may be generating an invalid typespec but we need to generate it
|
||||
# to avoid breaking existing code that was valid but only broke dialyzer
|
||||
state = %{state | undefined_type_error_enabled?: false}
|
||||
{left, state} = typespec(left, vars, caller, state)
|
||||
state = %{state | undefined_type_error_enabled?: true}
|
||||
{right, state} = typespec(right, vars, caller, state)
|
||||
{{:ann_type, line(meta), [left, right]}, state}
|
||||
end
|
||||
|
||||
# Handle unary ops
|
||||
defp typespec({op, meta, [integer]}, _, _, state) when op in [:+, :-] and is_integer(integer) do
|
||||
line = line(meta)
|
||||
{{:op, line, op, {:integer, line, integer}}, state}
|
||||
end
|
||||
|
||||
# Handle remote calls in the form of @module_attribute.type.
|
||||
# These are not handled by the general remote type clause as calling
|
||||
# Macro.expand/2 on the remote does not expand module attributes (but expands
|
||||
# things like __MODULE__).
|
||||
defp typespec(
|
||||
{{:., meta, [{:@, _, [{attr, _, _}]}, name]}, _, args} = orig,
|
||||
vars,
|
||||
caller,
|
||||
state
|
||||
) do
|
||||
remote = Module.get_attribute(caller.module, attr)
|
||||
|
||||
unless is_atom(remote) and remote != nil do
|
||||
message =
|
||||
"invalid remote in typespec: #{Macro.to_string(orig)} (@#{attr} is #{inspect(remote)})"
|
||||
|
||||
compile_error(caller, message)
|
||||
end
|
||||
|
||||
{remote_spec, state} = typespec(remote, vars, caller, state)
|
||||
{name_spec, state} = typespec(name, vars, caller, state)
|
||||
type = {remote_spec, meta, name_spec, args}
|
||||
remote_type(type, vars, caller, state)
|
||||
end
|
||||
|
||||
# Handle remote calls
|
||||
defp typespec({{:., meta, [remote, name]}, _, args} = orig, vars, caller, state) do
|
||||
# We set a function name to avoid tracking
|
||||
# aliases in typespecs as compile time dependencies.
|
||||
remote = Macro.expand(remote, %{caller | function: {:typespec, 0}})
|
||||
|
||||
unless is_atom(remote) do
|
||||
compile_error(caller, "invalid remote in typespec: #{Macro.to_string(orig)}")
|
||||
end
|
||||
|
||||
{remote_spec, state} = typespec(remote, vars, caller, state)
|
||||
{name_spec, state} = typespec(name, vars, caller, state)
|
||||
type = {remote_spec, meta, name_spec, args}
|
||||
remote_type(type, vars, caller, state)
|
||||
end
|
||||
|
||||
# Handle tuples
|
||||
defp typespec({:tuple, meta, []}, _vars, _caller, state) do
|
||||
{{:type, line(meta), :tuple, :any}, state}
|
||||
end
|
||||
|
||||
defp typespec({:{}, meta, t}, vars, caller, state) when is_list(t) do
|
||||
{args, state} = :lists.mapfoldl(&typespec(&1, vars, caller, &2), state, t)
|
||||
{{:type, line(meta), :tuple, args}, state}
|
||||
end
|
||||
|
||||
defp typespec({left, right}, vars, caller, state) do
|
||||
typespec({:{}, [], [left, right]}, vars, caller, state)
|
||||
end
|
||||
|
||||
# Handle blocks
|
||||
defp typespec({:__block__, _meta, [arg]}, vars, caller, state) do
|
||||
typespec(arg, vars, caller, state)
|
||||
end
|
||||
|
||||
# Handle variables or local calls
|
||||
defp typespec({name, meta, atom}, vars, caller, state) when is_atom(atom) do
|
||||
if :lists.member(name, vars) do
|
||||
state = update_local_vars(state, name)
|
||||
{{:var, line(meta), name}, state}
|
||||
else
|
||||
typespec({name, meta, []}, vars, caller, state)
|
||||
end
|
||||
end
|
||||
|
||||
# Handle local calls
|
||||
defp typespec({:string, meta, args}, vars, caller, state) do
|
||||
warning =
|
||||
"string() type use is discouraged. " <>
|
||||
"For character lists, use charlist() type, for strings, String.t()\n" <>
|
||||
Exception.format_stacktrace(Macro.Env.stacktrace(caller))
|
||||
|
||||
:elixir_errors.erl_warn(caller.line, caller.file, warning)
|
||||
{args, state} = :lists.mapfoldl(&typespec(&1, vars, caller, &2), state, args)
|
||||
{{:type, line(meta), :string, args}, state}
|
||||
end
|
||||
|
||||
defp typespec({:nonempty_string, meta, args}, vars, caller, state) do
|
||||
warning =
|
||||
"nonempty_string() type use is discouraged. " <>
|
||||
"For non-empty character lists, use nonempty_charlist() type, for strings, String.t()\n" <>
|
||||
Exception.format_stacktrace(Macro.Env.stacktrace(caller))
|
||||
|
||||
:elixir_errors.erl_warn(caller.line, caller.file, warning)
|
||||
{args, state} = :lists.mapfoldl(&typespec(&1, vars, caller, &2), state, args)
|
||||
{{:type, line(meta), :nonempty_string, args}, state}
|
||||
end
|
||||
|
||||
defp typespec({type, _meta, []}, vars, caller, state) when type in [:charlist, :char_list] do
|
||||
if type == :char_list do
|
||||
warning = "the char_list() type is deprecated, use charlist()"
|
||||
:elixir_errors.erl_warn(caller.line, caller.file, warning)
|
||||
end
|
||||
|
||||
typespec(quote(do: :elixir.charlist()), vars, caller, state)
|
||||
end
|
||||
|
||||
defp typespec({:nonempty_charlist, _meta, []}, vars, caller, state) do
|
||||
typespec(quote(do: :elixir.nonempty_charlist()), vars, caller, state)
|
||||
end
|
||||
|
||||
defp typespec({:struct, _meta, []}, vars, caller, state) do
|
||||
typespec(quote(do: :elixir.struct()), vars, caller, state)
|
||||
end
|
||||
|
||||
defp typespec({:as_boolean, _meta, [arg]}, vars, caller, state) do
|
||||
typespec(quote(do: :elixir.as_boolean(unquote(arg))), vars, caller, state)
|
||||
end
|
||||
|
||||
defp typespec({:keyword, _meta, args}, vars, caller, state) when length(args) <= 1 do
|
||||
typespec(quote(do: :elixir.keyword(unquote_splicing(args))), vars, caller, state)
|
||||
end
|
||||
|
||||
defp typespec({:fun, meta, args}, vars, caller, state) do
|
||||
{args, state} = :lists.mapfoldl(&typespec(&1, vars, caller, &2), state, args)
|
||||
{{:type, line(meta), :fun, args}, state}
|
||||
end
|
||||
|
||||
defp typespec({name, meta, args}, vars, caller, state) do
|
||||
{args, state} = :lists.mapfoldl(&typespec(&1, vars, caller, &2), state, args)
|
||||
arity = length(args)
|
||||
|
||||
case :erl_internal.is_type(name, arity) do
|
||||
true ->
|
||||
{{:type, line(meta), name, args}, state}
|
||||
|
||||
false ->
|
||||
if state.undefined_type_error_enabled? and
|
||||
not Map.has_key?(state.defined_type_pairs, {name, arity}) do
|
||||
compile_error(caller, "type #{name}/#{arity} undefined")
|
||||
end
|
||||
|
||||
state =
|
||||
if :lists.member({name, arity}, state.used_type_pairs) do
|
||||
state
|
||||
else
|
||||
%{state | used_type_pairs: [{name, arity} | state.used_type_pairs]}
|
||||
end
|
||||
|
||||
{{:user_type, line(meta), name, args}, state}
|
||||
end
|
||||
end
|
||||
|
||||
# Handle literals
|
||||
defp typespec(atom, _, _, state) when is_atom(atom) do
|
||||
{{:atom, 0, atom}, state}
|
||||
end
|
||||
|
||||
defp typespec(integer, _, _, state) when is_integer(integer) do
|
||||
{{:integer, 0, integer}, state}
|
||||
end
|
||||
|
||||
defp typespec([], vars, caller, state) do
|
||||
typespec({nil, [], []}, vars, caller, state)
|
||||
end
|
||||
|
||||
defp typespec([{:..., _, atom}], vars, caller, state) when is_atom(atom) do
|
||||
typespec({:nonempty_list, [], []}, vars, caller, state)
|
||||
end
|
||||
|
||||
defp typespec([spec, {:..., _, atom}], vars, caller, state) when is_atom(atom) do
|
||||
typespec({:nonempty_list, [], [spec]}, vars, caller, state)
|
||||
end
|
||||
|
||||
defp typespec([spec], vars, caller, state) do
|
||||
typespec({:list, [], [spec]}, vars, caller, state)
|
||||
end
|
||||
|
||||
defp typespec(list, vars, caller, state) when is_list(list) do
|
||||
[head | tail] = :lists.reverse(list)
|
||||
|
||||
union =
|
||||
:lists.foldl(
|
||||
fn elem, acc -> {:|, [], [validate_kw(elem, list, caller), acc]} end,
|
||||
validate_kw(head, list, caller),
|
||||
tail
|
||||
)
|
||||
|
||||
typespec({:list, [], [union]}, vars, caller, state)
|
||||
end
|
||||
|
||||
defp typespec(other, _vars, caller, _state) do
|
||||
compile_error(caller, "unexpected expression in typespec: #{Macro.to_string(other)}")
|
||||
end
|
||||
|
||||
## Helpers
|
||||
|
||||
defp compile_error(caller, desc) do
|
||||
raise CompileError, file: caller.file, line: caller.line, description: desc
|
||||
end
|
||||
|
||||
defp remote_type({remote, meta, name, args}, vars, caller, state) do
|
||||
{args, state} = :lists.mapfoldl(&typespec(&1, vars, caller, &2), state, args)
|
||||
{{:remote_type, line(meta), [remote, name, args]}, state}
|
||||
end
|
||||
|
||||
defp collect_union({:|, _, [a, b]}), do: [a | collect_union(b)]
|
||||
defp collect_union(v), do: [v]
|
||||
|
||||
defp validate_kw({key, _} = t, _, _caller) when is_atom(key), do: t
|
||||
|
||||
defp validate_kw(_, original, caller) do
|
||||
compile_error(caller, "unexpected list in typespec: #{Macro.to_string(original)}")
|
||||
end
|
||||
|
||||
defp validate_range({:op, _, :-, {:integer, meta, first}}, last, caller) do
|
||||
validate_range({:integer, meta, -first}, last, caller)
|
||||
end
|
||||
|
||||
defp validate_range(first, {:op, _, :-, {:integer, meta, last}}, caller) do
|
||||
validate_range(first, {:integer, meta, -last}, caller)
|
||||
end
|
||||
|
||||
defp validate_range({:integer, _, first}, {:integer, _, last}, _caller) when first < last do
|
||||
:ok
|
||||
end
|
||||
|
||||
defp validate_range(_, _, caller) do
|
||||
message =
|
||||
"invalid range specification, expected both sides to be integers, " <>
|
||||
"with the left side lower than the right side"
|
||||
|
||||
compile_error(caller, message)
|
||||
end
|
||||
|
||||
defp fn_args(meta, args, return, vars, caller, state) do
|
||||
{fun_args, state} = fn_args(meta, args, vars, caller, state)
|
||||
{spec, state} = typespec(return, vars, caller, state)
|
||||
|
||||
case [fun_args, spec] do
|
||||
[{:type, _, :any}, {:type, _, :any, []}] -> {[], state}
|
||||
x -> {x, state}
|
||||
end
|
||||
end
|
||||
|
||||
defp fn_args(meta, [{:..., _, _}], _vars, _caller, state) do
|
||||
{{:type, line(meta), :any}, state}
|
||||
end
|
||||
|
||||
defp fn_args(meta, args, vars, caller, state) do
|
||||
{args, state} = :lists.mapfoldl(&typespec(&1, vars, caller, &2), state, args)
|
||||
{{:type, line(meta), :product, args}, state}
|
||||
end
|
||||
|
||||
defp variable({name, meta, args}) when is_atom(name) and is_atom(args) do
|
||||
{:var, line(meta), name}
|
||||
end
|
||||
|
||||
defp variable(expr), do: expr
|
||||
|
||||
defp clean_local_state(state) do
|
||||
%{state | local_vars: %{}}
|
||||
end
|
||||
|
||||
defp update_local_vars(%{local_vars: local_vars} = state, var_name) do
|
||||
case Map.fetch(local_vars, var_name) do
|
||||
{:ok, :used_once} -> %{state | local_vars: Map.put(local_vars, var_name, :used_multiple)}
|
||||
{:ok, :used_multiple} -> state
|
||||
:error -> %{state | local_vars: Map.put(local_vars, var_name, :used_once)}
|
||||
end
|
||||
end
|
||||
|
||||
defp ensure_no_underscore_local_vars!(caller, var_names) do
|
||||
case :lists.member(:_, var_names) do
|
||||
true ->
|
||||
compile_error(caller, "type variable '_' is invalid")
|
||||
|
||||
false ->
|
||||
:ok
|
||||
end
|
||||
end
|
||||
|
||||
defp ensure_no_unused_local_vars!(caller, local_vars) do
|
||||
fun = fn {name, used_times} ->
|
||||
case {:erlang.atom_to_list(name), used_times} do
|
||||
{[?_ | _], :used_once} ->
|
||||
:ok
|
||||
|
||||
{[?_ | _], :used_multiple} ->
|
||||
warning =
|
||||
"the underscored type variable \"#{name}\" is used more than once in the " <>
|
||||
"type specification. A leading underscore indicates that the value of the " <>
|
||||
"variable should be ignored. If this is intended please rename the variable to " <>
|
||||
"remove the underscore"
|
||||
|
||||
:elixir_errors.erl_warn(caller.line, caller.file, warning)
|
||||
|
||||
{_, :used_once} ->
|
||||
compile_error(caller, "type variable #{name} is unused")
|
||||
|
||||
_ ->
|
||||
:ok
|
||||
end
|
||||
end
|
||||
|
||||
:lists.foreach(fun, :maps.to_list(local_vars))
|
||||
end
|
||||
end
|
||||
@@ -1,281 +0,0 @@
|
||||
import Kernel, except: [destructure: 2, defdelegate: 2, defstruct: 2]
|
||||
|
||||
defmodule Kernel.Utils do
|
||||
@moduledoc false
|
||||
|
||||
@doc """
|
||||
Callback for destructure.
|
||||
"""
|
||||
def destructure(list, count)
|
||||
when is_list(list) and is_integer(count) and count >= 0,
|
||||
do: destructure_list(list, count)
|
||||
|
||||
def destructure(nil, count)
|
||||
when is_integer(count) and count >= 0,
|
||||
do: destructure_nil(count)
|
||||
|
||||
defp destructure_list(_, 0), do: []
|
||||
defp destructure_list([], count), do: destructure_nil(count)
|
||||
defp destructure_list([h | t], count), do: [h | destructure_list(t, count - 1)]
|
||||
|
||||
defp destructure_nil(0), do: []
|
||||
defp destructure_nil(count), do: [nil | destructure_nil(count - 1)]
|
||||
|
||||
@doc """
|
||||
Callback for defdelegate.
|
||||
"""
|
||||
def defdelegate(fun, opts) when is_list(opts) do
|
||||
# TODO: Remove on v2.0
|
||||
append_first? = Keyword.get(opts, :append_first, false)
|
||||
|
||||
{name, args} =
|
||||
case Macro.decompose_call(fun) do
|
||||
{_, _} = pair -> pair
|
||||
_ -> raise ArgumentError, "invalid syntax in defdelegate #{Macro.to_string(fun)}"
|
||||
end
|
||||
|
||||
as = Keyword.get(opts, :as, name)
|
||||
as_args = build_as_args(args, append_first?)
|
||||
|
||||
{name, args, as, as_args}
|
||||
end
|
||||
|
||||
defp build_as_args(args, append_first?) do
|
||||
as_args = :lists.map(&build_as_arg/1, args)
|
||||
|
||||
case append_first? do
|
||||
true -> tl(as_args) ++ [hd(as_args)]
|
||||
false -> as_args
|
||||
end
|
||||
end
|
||||
|
||||
defp build_as_arg({:\\, _, [arg, _default_arg]}), do: validate_arg(arg)
|
||||
defp build_as_arg(arg), do: validate_arg(arg)
|
||||
|
||||
defp validate_arg({name, _, mod} = arg) when is_atom(name) and is_atom(mod) do
|
||||
arg
|
||||
end
|
||||
|
||||
defp validate_arg(ast) do
|
||||
raise ArgumentError,
|
||||
"defdelegate/2 only accepts function parameters, got: #{Macro.to_string(ast)}"
|
||||
end
|
||||
|
||||
@doc """
|
||||
Callback for defstruct.
|
||||
"""
|
||||
def defstruct(module, fields) do
|
||||
case fields do
|
||||
fs when is_list(fs) ->
|
||||
:ok
|
||||
|
||||
other ->
|
||||
raise ArgumentError, "struct fields definition must be list, got: #{inspect(other)}"
|
||||
end
|
||||
|
||||
mapper = fn
|
||||
{key, val} when is_atom(key) ->
|
||||
try do
|
||||
Macro.escape(val)
|
||||
rescue
|
||||
e in [ArgumentError] ->
|
||||
raise ArgumentError, "invalid value for struct field #{key}, " <> Exception.message(e)
|
||||
else
|
||||
_ -> {key, val}
|
||||
end
|
||||
|
||||
key when is_atom(key) ->
|
||||
{key, nil}
|
||||
|
||||
other ->
|
||||
raise ArgumentError, "struct field names must be atoms, got: #{inspect(other)}"
|
||||
end
|
||||
|
||||
fields = :lists.map(mapper, fields)
|
||||
enforce_keys = List.wrap(Module.get_attribute(module, :enforce_keys))
|
||||
|
||||
foreach = fn
|
||||
key when is_atom(key) ->
|
||||
:ok
|
||||
|
||||
key ->
|
||||
raise ArgumentError, "keys given to @enforce_keys must be atoms, got: #{inspect(key)}"
|
||||
end
|
||||
|
||||
:lists.foreach(foreach, enforce_keys)
|
||||
|
||||
struct = :maps.put(:__struct__, module, :maps.from_list(fields))
|
||||
{struct, enforce_keys, Module.get_attribute(module, :derive)}
|
||||
end
|
||||
|
||||
@doc """
|
||||
Announcing callback for defstruct.
|
||||
"""
|
||||
def announce_struct(module) do
|
||||
case :erlang.get(:elixir_compiler_pid) do
|
||||
:undefined -> :ok
|
||||
pid -> send(pid, {:available, :struct, module})
|
||||
end
|
||||
end
|
||||
|
||||
@doc """
|
||||
Callback for raise.
|
||||
"""
|
||||
def raise(msg) when is_binary(msg) do
|
||||
RuntimeError.exception(msg)
|
||||
end
|
||||
|
||||
def raise(module) when is_atom(module) do
|
||||
module.exception([])
|
||||
end
|
||||
|
||||
def raise(%_{__exception__: true} = exception) do
|
||||
exception
|
||||
end
|
||||
|
||||
def raise(other) do
|
||||
ArgumentError.exception(
|
||||
"raise/1 and reraise/2 expect a module name, string or exception " <>
|
||||
"as the first argument, got: #{inspect(other)}"
|
||||
)
|
||||
end
|
||||
|
||||
@doc """
|
||||
Callback for defguard.
|
||||
|
||||
Rewrites an expression so it can be used both inside and outside a guard.
|
||||
|
||||
Take, for example, the expression:
|
||||
|
||||
is_integer(value) and rem(value, 2) == 0
|
||||
|
||||
If we wanted to create a macro, `is_even`, from this expression, that could be
|
||||
used in guards, we'd have to take several things into account.
|
||||
|
||||
First, if this expression is being used inside a guard, `value` needs to be
|
||||
unquoted each place it occurs, since it has not yet been at that point in our
|
||||
macro.
|
||||
|
||||
Secondly, if the expression is being used outside of a guard, we want to unquote
|
||||
`value`, but only once, and then re-use the unquoted form throughout the expression.
|
||||
|
||||
This helper does exactly that: takes the AST for an expression and a list of
|
||||
variable references it should be aware of, and rewrites it into a new expression
|
||||
that checks for its presence in a guard, then unquotes the variable references as
|
||||
appropriate.
|
||||
|
||||
The following code
|
||||
|
||||
expression = quote do: is_integer(value) and rem(value, 2) == 0
|
||||
variable_references = [value: Elixir]
|
||||
Kernel.Utils.defguard(expression, variable_references) |> Macro.to_string() |> IO.puts()
|
||||
|
||||
would print a code similar to:
|
||||
|
||||
case Macro.Env.in_guard?(__CALLER__) do
|
||||
true ->
|
||||
quote do
|
||||
is_integer(unquote(value)) and rem(unquote(value), 2) == 0
|
||||
end
|
||||
|
||||
false ->
|
||||
quote do
|
||||
value = unquote(value)
|
||||
is_integer(value) and rem(value, 2) == 0
|
||||
end
|
||||
end
|
||||
|
||||
"""
|
||||
defmacro defguard(args, expr) do
|
||||
defguard(args, expr, __CALLER__)
|
||||
end
|
||||
|
||||
@spec defguard([Macro.t()], Macro.t(), Macro.Env.t()) :: Macro.t()
|
||||
def defguard(args, expr, env) do
|
||||
{^args, vars} = extract_refs_from_args(args)
|
||||
env = :elixir_env.with_vars(%{env | context: :guard}, vars)
|
||||
{expr, _scope} = :elixir_expand.expand(expr, env)
|
||||
|
||||
quote do
|
||||
case Macro.Env.in_guard?(__CALLER__) do
|
||||
true -> unquote(literal_quote(unquote_every_ref(expr, vars)))
|
||||
false -> unquote(literal_quote(unquote_refs_once(expr, vars)))
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
defp extract_refs_from_args(args) do
|
||||
Macro.postwalk(args, [], fn
|
||||
{ref, meta, context} = var, acc when is_atom(ref) and is_atom(context) ->
|
||||
{var, [{ref, var_context(meta, context)} | acc]}
|
||||
|
||||
node, acc ->
|
||||
{node, acc}
|
||||
end)
|
||||
end
|
||||
|
||||
# Finds every reference to `refs` in `guard` and wraps them in an unquote.
|
||||
defp unquote_every_ref(guard, refs) do
|
||||
Macro.postwalk(guard, fn
|
||||
{ref, meta, context} = var when is_atom(ref) and is_atom(context) ->
|
||||
case {ref, var_context(meta, context)} in refs do
|
||||
true -> literal_unquote(var)
|
||||
false -> var
|
||||
end
|
||||
|
||||
node ->
|
||||
node
|
||||
end)
|
||||
end
|
||||
|
||||
# Prefaces `guard` with unquoted versions of `refs`.
|
||||
defp unquote_refs_once(guard, refs) do
|
||||
{guard, used_refs} =
|
||||
Macro.postwalk(guard, %{}, fn
|
||||
{ref, meta, context} = var, acc when is_atom(ref) and is_atom(context) ->
|
||||
pair = {ref, var_context(meta, context)}
|
||||
|
||||
case pair in refs do
|
||||
true ->
|
||||
case acc do
|
||||
%{^pair => {new_var, _}} ->
|
||||
{new_var, acc}
|
||||
|
||||
%{} ->
|
||||
generated = String.to_atom("arg" <> Integer.to_string(map_size(acc)))
|
||||
new_var = Macro.var(generated, Elixir)
|
||||
{new_var, Map.put(acc, pair, {new_var, var})}
|
||||
end
|
||||
|
||||
false ->
|
||||
{var, acc}
|
||||
end
|
||||
|
||||
node, acc ->
|
||||
{node, acc}
|
||||
end)
|
||||
|
||||
all_used = for ref <- :lists.reverse(refs), used = :maps.get(ref, used_refs, nil), do: used
|
||||
{vars, exprs} = :lists.unzip(all_used)
|
||||
|
||||
quote do
|
||||
{unquote_splicing(vars)} = {unquote_splicing(Enum.map(exprs, &literal_unquote/1))}
|
||||
unquote(guard)
|
||||
end
|
||||
end
|
||||
|
||||
defp literal_quote(ast) do
|
||||
{:quote, [], [[do: ast]]}
|
||||
end
|
||||
|
||||
defp literal_unquote(ast) do
|
||||
{:unquote, [], List.wrap(ast)}
|
||||
end
|
||||
|
||||
defp var_context(meta, kind) do
|
||||
case :lists.keyfind(:counter, 1, meta) do
|
||||
{:counter, counter} -> counter
|
||||
false -> kind
|
||||
end
|
||||
end
|
||||
end
|
||||
File diff suppressed because it is too large
Load Diff
Some files were not shown because too many files have changed in this diff Show More
Reference in New Issue
Block a user