579 lines
21 KiB
Erlang
579 lines
21 KiB
Erlang
Nonterminals
|
|
grammar expr_list
|
|
expr paren_expr block_expr no_parens_expr identifier_expr max_expr bracket_expr
|
|
bracket_at_expr base_expr matched_expr matched_op_expr unmatched_expr op_expr
|
|
comp_op_eol at_op_eol unary_op_eol and_op_eol or_op_eol tail_op_eol
|
|
add_op_eol mult_op_eol exp_op_eol two_op_eol type_op_eol stab_op_eol
|
|
arrow_op_eol range_op_eol than_op_eol default_op_eol match_op_eol
|
|
when_op_eol in_op_eol inc_op_eol
|
|
open_paren close_paren empty_paren
|
|
open_bracket close_bracket
|
|
open_curly close_curly
|
|
open_bit close_bit
|
|
base_comma_expr comma_expr optional_comma_expr matched_comma_expr
|
|
call_args call_args_parens parens_call
|
|
call_args_no_parens call_args_no_parens_strict call_args_parens_not_one
|
|
stab stab_eol stab_expr stab_maybe_expr
|
|
kw_eol kw_expr kw_comma kw_base
|
|
matched_kw_expr matched_kw_comma matched_kw_base
|
|
dot_op dot_alias dot_identifier dot_op_identifier dot_do_identifier
|
|
dot_paren_identifier dot_punctuated_identifier dot_bracket_identifier
|
|
var list bracket_access bit_string tuple
|
|
do_block fn_eol do_eol end_eol block_eol block_item block_list
|
|
.
|
|
|
|
Terminals
|
|
identifier kw_identifier punctuated_identifier
|
|
bracket_identifier paren_identifier do_identifier block_identifier
|
|
fn 'end' aliases
|
|
number signed_number atom bin_string list_string sigil
|
|
dot_call_op op_identifier
|
|
comp_op at_op unary_op and_op or_op arrow_op match_op
|
|
range_op in_op inc_op when_op than_op default_op tail_op
|
|
dual_op add_op mult_op exp_op two_op type_op stab_op
|
|
'true' 'false' 'nil' 'do' eol ',' '.' '&'
|
|
'(' ')' '[' ']' '{' '}' '<<' '>>'
|
|
.
|
|
|
|
Rootsymbol grammar.
|
|
|
|
Left 5 do.
|
|
Right 10 stab_op_eol. %% ->
|
|
Left 20 ','.
|
|
Right 30 type_op_eol. %% ::
|
|
Right 40 when_op_eol. %% when
|
|
Left 50 inc_op_eol. %% inlist, inbits
|
|
Right 60 default_op_eol. %% //
|
|
Left 70 tail_op_eol. %% |
|
|
Right 80 match_op_eol. %% =
|
|
Left 130 or_op_eol. %% ||, |||, or, xor
|
|
Left 140 and_op_eol. %% &&, &&&, and
|
|
Left 150 comp_op_eol. %% <, >, <=, >=, ==, !=, =~, ===, !==
|
|
Right 160 arrow_op_eol. %% < (op), (op) > (e.g <-, |>, <<<, >>>)
|
|
Left 170 in_op_eol. %% in
|
|
Left 200 range_op_eol. %% ..
|
|
Left 210 add_op_eol. %% + (op), - (op)
|
|
Left 220 mult_op_eol. %% * (op), / (op)
|
|
Right 230 than_op_eol. %% < (op) > (e.g <>)
|
|
Right 240 two_op_eol. %% ++, --, **
|
|
Left 250 exp_op_eol. %% ^ (op) (e.g ^^^)
|
|
Nonassoc 300 unary_op_eol. %% +, -, !, ^, not, ~~~
|
|
Left 310 dot_call_op.
|
|
Left 310 dot_op. %% .
|
|
Nonassoc 320 at_op_eol. %% @ (op)
|
|
Nonassoc 330 var.
|
|
|
|
%%% MAIN FLOW OF EXPRESSIONS
|
|
|
|
grammar -> eol : [nil].
|
|
grammar -> expr_list : lists:reverse('$1').
|
|
grammar -> eol expr_list : lists:reverse('$2').
|
|
grammar -> expr_list eol : lists:reverse('$1').
|
|
grammar -> eol expr_list eol : lists:reverse('$2').
|
|
grammar -> '$empty' : [nil].
|
|
|
|
% Note expressions are on reverse order
|
|
expr_list -> expr : ['$1'].
|
|
expr_list -> empty_paren : [nil].
|
|
expr_list -> expr_list eol expr : ['$3'|'$1'].
|
|
|
|
paren_expr -> empty_paren : nil.
|
|
paren_expr -> expr : '$1'.
|
|
|
|
expr -> matched_expr : '$1'.
|
|
expr -> unmatched_expr : '$1'.
|
|
|
|
matched_expr -> matched_expr matched_op_expr : build_op(element(1, '$2'), '$1', element(2, '$2')).
|
|
matched_expr -> unary_op_eol matched_expr : build_unary_op('$1', '$2').
|
|
matched_expr -> at_op_eol matched_expr : build_unary_op('$1', '$2').
|
|
matched_expr -> bracket_at_expr : '$1'.
|
|
matched_expr -> no_parens_expr : '$1'.
|
|
|
|
unmatched_expr -> matched_expr op_expr : build_op(element(1, '$2'), '$1', element(2, '$2')).
|
|
unmatched_expr -> unmatched_expr op_expr : build_op(element(1, '$2'), '$1', element(2, '$2')).
|
|
unmatched_expr -> unary_op_eol expr : build_unary_op('$1', '$2').
|
|
unmatched_expr -> at_op_eol expr : build_unary_op('$1', '$2').
|
|
unmatched_expr -> block_expr : '$1'.
|
|
|
|
op_expr -> match_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> add_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> mult_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> exp_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> two_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> and_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> or_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> tail_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> than_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> in_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> inc_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> when_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> range_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> default_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> type_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> comp_op_eol expr : { '$1', '$2' }.
|
|
op_expr -> arrow_op_eol expr : { '$1', '$2' }.
|
|
|
|
matched_op_expr -> match_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> add_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> mult_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> exp_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> two_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> and_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> or_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> tail_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> than_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> in_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> inc_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> when_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> range_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> default_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> type_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> comp_op_eol matched_expr : { '$1', '$2' }.
|
|
matched_op_expr -> arrow_op_eol matched_expr : { '$1', '$2' }.
|
|
|
|
block_expr -> parens_call call_args_parens do_block : build_identifier('$1', '$2' ++ '$3').
|
|
block_expr -> parens_call call_args_parens call_args_parens do_block : build_nested_parens('$1', '$2', '$3' ++ '$4').
|
|
block_expr -> dot_punctuated_identifier call_args_no_parens_strict do_block : build_identifier('$1', '$2' ++ '$3').
|
|
block_expr -> dot_do_identifier do_block : build_identifier('$1', '$2').
|
|
block_expr -> dot_identifier call_args_no_parens_strict do_block : build_identifier('$1', '$2' ++ '$3').
|
|
|
|
no_parens_expr -> dot_punctuated_identifier call_args_no_parens_strict : build_identifier('$1', '$2').
|
|
no_parens_expr -> dot_op_identifier call_args_no_parens_strict : build_identifier('$1', '$2').
|
|
no_parens_expr -> dot_identifier call_args_no_parens_strict : build_identifier('$1', '$2').
|
|
no_parens_expr -> identifier_expr : '$1'.
|
|
|
|
identifier_expr -> dot_punctuated_identifier : build_identifier('$1', []).
|
|
identifier_expr -> dot_do_identifier : build_identifier('$1', nil).
|
|
identifier_expr -> var : build_identifier('$1', nil).
|
|
identifier_expr -> max_expr : '$1'.
|
|
|
|
max_expr -> fn_eol stab end_eol : build_fn('$1', build_stab(lists:reverse('$2'))).
|
|
max_expr -> open_paren stab close_paren : build_stab(lists:reverse('$2')).
|
|
max_expr -> bracket_expr : '$1'.
|
|
max_expr -> parens_call call_args_parens : build_identifier('$1', '$2').
|
|
max_expr -> parens_call call_args_parens call_args_parens : build_nested_parens('$1', '$2', '$3').
|
|
max_expr -> dot_alias : '$1'.
|
|
max_expr -> base_expr : '$1'.
|
|
|
|
bracket_expr -> dot_bracket_identifier bracket_access : build_access(build_identifier('$1', nil), '$2').
|
|
bracket_expr -> max_expr bracket_access : build_access('$1', '$2').
|
|
|
|
bracket_at_expr -> at_op_eol dot_bracket_identifier bracket_access :
|
|
build_access(build_unary_op('$1', build_identifier('$2', nil)), '$3').
|
|
bracket_at_expr -> at_op_eol max_expr bracket_access :
|
|
build_access(build_unary_op('$1', '$2'), '$3').
|
|
bracket_at_expr -> bracket_at_expr bracket_access :
|
|
build_access('$1', '$2').
|
|
|
|
base_expr -> number : ?exprs('$1').
|
|
base_expr -> signed_number : { element(4, '$1'), [{line,?line('$1')}], ?exprs('$1') }.
|
|
base_expr -> atom : build_atom('$1').
|
|
base_expr -> list : '$1'.
|
|
base_expr -> tuple : '$1'.
|
|
base_expr -> 'true' : ?id('$1').
|
|
base_expr -> 'false' : ?id('$1').
|
|
base_expr -> 'nil' : ?id('$1').
|
|
base_expr -> aliases : { '__aliases__', [{line,?line('$1')}], ?exprs('$1') }.
|
|
base_expr -> bin_string : build_bin_string('$1').
|
|
base_expr -> list_string : build_list_string('$1').
|
|
base_expr -> bit_string : '$1'.
|
|
base_expr -> '&' : { '&', [{line,?line('$1')}], ?exprs('$1') }.
|
|
base_expr -> sigil : build_sigil('$1').
|
|
|
|
%% Blocks
|
|
|
|
do_block -> do_eol 'end' : [[{do,nil}]].
|
|
do_block -> do_eol stab end_eol : [[{ do, build_stab(lists:reverse('$2')) }]].
|
|
do_block -> do_eol block_list 'end' : [[{ do, nil }|'$2']].
|
|
do_block -> do_eol stab_eol block_list 'end' : [[{ do, build_stab(lists:reverse('$2')) }|'$3']].
|
|
|
|
fn_eol -> 'fn' : '$1'.
|
|
fn_eol -> 'fn' eol : '$1'.
|
|
|
|
do_eol -> 'do' : '$1'.
|
|
do_eol -> 'do' eol : '$1'.
|
|
|
|
end_eol -> 'end' : '$1'.
|
|
end_eol -> eol 'end' : '$2'.
|
|
|
|
block_eol -> block_identifier : '$1'.
|
|
block_eol -> block_identifier eol : '$1'.
|
|
|
|
stab -> stab_expr : ['$1'].
|
|
stab -> stab eol stab_expr : ['$3'|'$1'].
|
|
|
|
stab_eol -> stab : '$1'.
|
|
stab_eol -> stab eol : '$1'.
|
|
|
|
stab_expr -> expr : '$1'.
|
|
stab_expr -> stab_op_eol stab_maybe_expr : build_op('$1', [], '$2').
|
|
stab_expr -> call_args_no_parens stab_op_eol stab_maybe_expr :
|
|
build_op('$2', unwrap_when(unwrap_splice('$1')), '$3').
|
|
stab_expr -> call_args_parens_not_one stab_op_eol stab_maybe_expr :
|
|
build_op('$2', unwrap_splice('$1'), '$3').
|
|
stab_expr -> call_args_parens_not_one when_op matched_expr stab_op_eol stab_maybe_expr :
|
|
build_op('$4', [{ 'when', [{line,?line('$2')}], unwrap_splice('$1') ++ ['$3'] }], '$5').
|
|
|
|
stab_maybe_expr -> 'expr' : '$1'.
|
|
stab_maybe_expr -> '$empty' : nil.
|
|
|
|
block_item -> block_eol stab_eol : { ?exprs('$1'), build_stab(lists:reverse('$2')) }.
|
|
block_item -> block_eol : { ?exprs('$1'), nil }.
|
|
|
|
block_list -> block_item : ['$1'].
|
|
block_list -> block_item block_list : ['$1'|'$2'].
|
|
|
|
%% Helpers
|
|
|
|
var -> dot_identifier : '$1'.
|
|
|
|
open_paren -> '(' : '$1'.
|
|
open_paren -> '(' eol : '$1'.
|
|
close_paren -> ')' : '$1'.
|
|
close_paren -> eol ')' : '$2'.
|
|
|
|
empty_paren -> open_paren ')' : '$1'.
|
|
|
|
open_bracket -> '[' : '$1'.
|
|
open_bracket -> '[' eol : '$1'.
|
|
close_bracket -> ']' : '$1'.
|
|
close_bracket -> eol ']' : '$2'.
|
|
|
|
open_bit -> '<<' : '$1'.
|
|
open_bit -> '<<' eol : '$1'.
|
|
close_bit -> '>>' : '$1'.
|
|
close_bit -> eol '>>' : '$2'.
|
|
|
|
open_curly -> '{' : '$1'.
|
|
open_curly -> '{' eol : '$1'.
|
|
close_curly -> '}' : '$1'.
|
|
close_curly -> eol '}' : '$2'.
|
|
|
|
% Operators
|
|
|
|
add_op_eol -> add_op : '$1'.
|
|
add_op_eol -> add_op eol : '$1'.
|
|
add_op_eol -> dual_op : '$1'.
|
|
add_op_eol -> dual_op eol : '$1'.
|
|
|
|
mult_op_eol -> mult_op : '$1'.
|
|
mult_op_eol -> mult_op eol : '$1'.
|
|
|
|
exp_op_eol -> exp_op : '$1'.
|
|
exp_op_eol -> exp_op eol : '$1'.
|
|
|
|
two_op_eol -> two_op : '$1'.
|
|
two_op_eol -> two_op eol : '$1'.
|
|
|
|
default_op_eol -> default_op : '$1'.
|
|
default_op_eol -> default_op eol : '$1'.
|
|
|
|
type_op_eol -> type_op : '$1'.
|
|
type_op_eol -> type_op eol : '$1'.
|
|
|
|
unary_op_eol -> unary_op : '$1'.
|
|
unary_op_eol -> unary_op eol : '$1'.
|
|
unary_op_eol -> dual_op : '$1'.
|
|
unary_op_eol -> dual_op eol : '$1'.
|
|
|
|
match_op_eol -> match_op : '$1'.
|
|
match_op_eol -> match_op eol : '$1'.
|
|
|
|
and_op_eol -> and_op : '$1'.
|
|
and_op_eol -> and_op eol : '$1'.
|
|
|
|
or_op_eol -> or_op : '$1'.
|
|
or_op_eol -> or_op eol : '$1'.
|
|
|
|
tail_op_eol -> tail_op : '$1'.
|
|
tail_op_eol -> tail_op eol : '$1'.
|
|
|
|
than_op_eol -> than_op : '$1'.
|
|
than_op_eol -> than_op eol : '$1'.
|
|
|
|
in_op_eol -> in_op : '$1'.
|
|
in_op_eol -> in_op eol : '$1'.
|
|
|
|
inc_op_eol -> inc_op : '$1'.
|
|
inc_op_eol -> inc_op eol : '$1'.
|
|
|
|
when_op_eol -> when_op : '$1'.
|
|
when_op_eol -> when_op eol : '$1'.
|
|
|
|
stab_op_eol -> stab_op : '$1'.
|
|
stab_op_eol -> stab_op eol : '$1'.
|
|
|
|
range_op_eol -> range_op : '$1'.
|
|
range_op_eol -> range_op eol : '$1'.
|
|
|
|
at_op_eol -> at_op : '$1'.
|
|
at_op_eol -> at_op eol : '$1'.
|
|
|
|
comp_op_eol -> comp_op : '$1'.
|
|
comp_op_eol -> comp_op eol : '$1'.
|
|
|
|
arrow_op_eol -> arrow_op : '$1'.
|
|
arrow_op_eol -> arrow_op eol : '$1'.
|
|
|
|
% Dot operator
|
|
|
|
dot_op -> '.' : '$1'.
|
|
dot_op -> '.' eol : '$1'.
|
|
|
|
dot_identifier -> identifier : '$1'.
|
|
dot_identifier -> matched_expr dot_op identifier : build_dot('$2', '$1', '$3').
|
|
|
|
dot_alias -> matched_expr dot_op aliases : build_dot_alias('$2', '$1', '$3').
|
|
|
|
dot_op_identifier -> op_identifier : '$1'.
|
|
dot_op_identifier -> matched_expr dot_op op_identifier : build_dot('$2', '$1', '$3').
|
|
|
|
dot_do_identifier -> do_identifier : '$1'.
|
|
dot_do_identifier -> matched_expr dot_op do_identifier : build_dot('$2', '$1', '$3').
|
|
|
|
dot_bracket_identifier -> bracket_identifier : '$1'.
|
|
dot_bracket_identifier -> matched_expr dot_op bracket_identifier : build_dot('$2', '$1', '$3').
|
|
|
|
dot_paren_identifier -> paren_identifier : '$1'.
|
|
dot_paren_identifier -> matched_expr dot_op paren_identifier : build_dot('$2', '$1', '$3').
|
|
|
|
dot_punctuated_identifier -> punctuated_identifier : '$1'.
|
|
dot_punctuated_identifier -> matched_expr dot_op punctuated_identifier : build_dot('$2', '$1', '$3').
|
|
|
|
parens_call -> dot_paren_identifier : '$1'.
|
|
parens_call -> matched_expr dot_call_op : { '.', [{line,?line('$2')}], ['$1'] }. % Fun/local calls
|
|
|
|
% Function calls
|
|
|
|
matched_comma_expr -> matched_expr : ['$1'].
|
|
matched_comma_expr -> matched_comma_expr ',' matched_expr : ['$3'|'$1'].
|
|
|
|
call_args_no_parens_strict -> call_args_no_parens : '$1'.
|
|
call_args_no_parens_strict -> empty_paren : throw_no_parens_strict('$1').
|
|
call_args_no_parens_strict -> open_paren matched_kw_base close_paren : throw_no_parens_strict('$1').
|
|
call_args_no_parens_strict -> open_paren matched_expr ',' call_args_no_parens close_paren : throw_no_parens_strict('$1').
|
|
|
|
call_args_no_parens -> matched_comma_expr : lists:reverse('$1').
|
|
call_args_no_parens -> matched_kw_base : ['$1'].
|
|
call_args_no_parens -> matched_comma_expr ',' matched_kw_base : lists:reverse(['$3'|'$1']).
|
|
|
|
call_args_parens_not_one -> empty_paren : [].
|
|
call_args_parens_not_one -> open_paren matched_kw_base close_paren : ['$2'].
|
|
call_args_parens_not_one -> open_paren matched_expr ',' call_args_no_parens close_paren : ['$2'|'$4'].
|
|
|
|
base_comma_expr -> paren_expr ',' : ['$1'].
|
|
base_comma_expr -> base_comma_expr paren_expr ',' : ['$2'|'$1'].
|
|
|
|
comma_expr -> paren_expr : ['$1'].
|
|
comma_expr -> kw_base : ['$1'].
|
|
comma_expr -> base_comma_expr : '$1'.
|
|
comma_expr -> base_comma_expr paren_expr : ['$2'|'$1'].
|
|
comma_expr -> base_comma_expr kw_base : ['$2'|'$1'].
|
|
|
|
optional_comma_expr -> paren_expr : '$1'.
|
|
optional_comma_expr -> paren_expr ',' : '$1'.
|
|
|
|
call_args -> comma_expr : lists:reverse('$1').
|
|
|
|
call_args_parens -> empty_paren : [].
|
|
call_args_parens -> open_paren call_args close_paren : '$2'.
|
|
|
|
% KV
|
|
|
|
kw_eol -> kw_identifier : '$1'.
|
|
kw_eol -> kw_identifier eol : '$1'.
|
|
kw_expr -> kw_eol paren_expr : { ?exprs('$1'),'$2' }.
|
|
|
|
kw_comma -> kw_expr ',' : ['$1'].
|
|
kw_comma -> kw_comma kw_expr ',' : ['$2'|'$1'].
|
|
|
|
kw_base -> kw_expr : ['$1'].
|
|
kw_base -> kw_comma : lists:reverse('$1').
|
|
kw_base -> kw_comma kw_expr : lists:reverse(['$2'|'$1']).
|
|
|
|
matched_kw_expr -> kw_eol matched_expr : {?exprs('$1'),'$2'}.
|
|
matched_kw_expr -> kw_eol empty_paren : {?exprs('$1'),nil}.
|
|
matched_kw_comma -> matched_kw_expr : ['$1'].
|
|
matched_kw_comma -> matched_kw_expr ',' matched_kw_comma : ['$1'|'$3'].
|
|
matched_kw_base -> matched_kw_comma : '$1'.
|
|
|
|
% Lists
|
|
|
|
bracket_access -> open_bracket ']' : { [], ?line('$1') }.
|
|
bracket_access -> open_bracket optional_comma_expr close_bracket : { '$2', ?line('$1') }.
|
|
bracket_access -> open_bracket kw_base close_bracket : { '$2', ?line('$1') }.
|
|
|
|
list -> open_bracket ']' : [].
|
|
list -> open_bracket kw_base close_bracket : '$2'.
|
|
list -> open_bracket optional_comma_expr close_bracket : ['$2'].
|
|
list -> open_bracket paren_expr ',' call_args close_bracket : ['$2'|'$4'].
|
|
|
|
% Tuple
|
|
|
|
tuple -> open_curly '}' : build_tuple('$1', []).
|
|
tuple -> open_curly optional_comma_expr close_curly : build_tuple('$1', ['$2']).
|
|
tuple -> open_curly paren_expr ',' call_args close_curly : build_tuple('$1', ['$2'|'$4']).
|
|
|
|
% Bitstrings
|
|
|
|
bit_string -> open_bit '>>' : { '<<>>', [{line,?line('$1')}], [] }.
|
|
bit_string -> open_bit call_args close_bit : { '<<>>', [{line,?line('$1')}], '$2' }.
|
|
|
|
Erlang code.
|
|
|
|
-define(id(Node), element(1, Node)).
|
|
-define(line(Node), element(2, Node)).
|
|
-define(exprs(Node), element(3, Node)).
|
|
|
|
-define(rearrange_uop(Op), Op == 'not' orelse Op == '!').
|
|
-define(rearrange_bop(Op), Op == 'in' orelse Op == 'inlist' orelse Op == 'inbits').
|
|
|
|
%% The following directive is needed for (significantly) faster
|
|
%% compilation of the generated .erl file by the HiPE compiler
|
|
-compile([{hipe,[{regalloc,linear_scan}]}]).
|
|
|
|
%% Operators
|
|
|
|
build_op({ _Kind, Line, BOp }, { UOp, _, [Left] }, Right) when ?rearrange_bop(BOp), ?rearrange_uop(UOp) ->
|
|
{ UOp, [{line,Line}], [{ BOp, [{line,Line}], [Left, Right] }] };
|
|
|
|
build_op({ _Kind, Line, Op }, Left, Right) ->
|
|
{ Op, [{line,Line}], [Left, Right] }.
|
|
|
|
build_unary_op({ _Kind, Line, Op }, Expr) ->
|
|
{ Op, [{line,Line}], [Expr] }.
|
|
|
|
build_tuple(_Marker, [Left, Right]) ->
|
|
{ Left, Right };
|
|
|
|
build_tuple(Marker, Args) ->
|
|
{ '{}', [{line,?line(Marker)}], Args }.
|
|
|
|
%% Blocks
|
|
|
|
build_block([nil]) -> { '__block__', [], [nil] };
|
|
build_block([{Op,_,[_]}]=Exprs) when ?rearrange_uop(Op) -> { '__block__', [], Exprs };
|
|
build_block([{unquote_splicing,_,Args}]=Exprs) when
|
|
length(Args) =< 2 -> { '__block__', [], Exprs };
|
|
build_block([Expr]) -> Expr;
|
|
build_block(Exprs) -> { '__block__', [], Exprs }.
|
|
|
|
%% Dots
|
|
|
|
build_dot_alias(Dot, { '__aliases__', _, Left }, { 'aliases', _, Right }) ->
|
|
{ '__aliases__', [{line,?line(Dot)}], Left ++ Right };
|
|
|
|
build_dot_alias(Dot, Other, { 'aliases', _, Right }) ->
|
|
{ '__aliases__', [{line,?line(Dot)}], [Other|Right] }.
|
|
|
|
build_dot(Dot, Left, Right) ->
|
|
{ '.', [{line,?line(Dot)}], [Left, extract_identifier(Right)] }.
|
|
|
|
%% Identifiers
|
|
|
|
build_nested_parens(Dot, Args1, Args2) ->
|
|
Identifier = build_identifier(Dot, Args1),
|
|
{ Identifier, ?line(Identifier), Args2 }.
|
|
|
|
build_identifier({ '.', Meta, _ } = Dot, Args) ->
|
|
FArgs = case Args of
|
|
nil -> [];
|
|
_ -> Args
|
|
end,
|
|
{ Dot, Meta, FArgs };
|
|
|
|
build_identifier({ Keyword, Line }, Args) when Keyword == fn ->
|
|
{ fn, [{line,Line}], Args };
|
|
|
|
build_identifier({ op_identifier, Line, Identifier }, Args) ->
|
|
{ '__ambiguousop__', [{line,Line}], [{ Identifier, [{line,Line}], nil }|Args] };
|
|
|
|
build_identifier({ _, Line, Identifier }, Args) ->
|
|
{ Identifier, [{line,Line}], Args }.
|
|
|
|
extract_identifier({ Kind, _, Identifier }) when
|
|
Kind == identifier; Kind == punctuated_identifier; Kind == bracket_identifier;
|
|
Kind == paren_identifier; Kind == do_identifier; Kind == op_identifier ->
|
|
Identifier;
|
|
|
|
extract_identifier(Other) -> Other.
|
|
|
|
%% Fn
|
|
|
|
build_fn(Op, Stab) ->
|
|
{ fn, [{line,?line(Op)}], [[{ do, Stab }]] }.
|
|
|
|
%% Access
|
|
|
|
build_access(Expr, Access) ->
|
|
Meta = [{line,?line(Access)}],
|
|
{ { '.', Meta, ['Elixir.Kernel', access] }, Meta, [ Expr, ?id(Access) ] }.
|
|
|
|
%% Interpolation aware
|
|
|
|
build_sigil({ sigil, Line, Sigil, Parts, Modifiers }) ->
|
|
Meta = [{line,Line}],
|
|
{ list_to_atom("sigil_" ++ [Sigil]), Meta, [ { '<<>>', Meta, Parts }, Modifiers ] }.
|
|
|
|
build_bin_string({ bin_string, _Line, [H] }) when is_binary(H) -> H;
|
|
build_bin_string({ bin_string, Line, Args }) -> { '<<>>', [{line,Line}], Args }.
|
|
|
|
build_list_string({ list_string, _Line, [H] }) when is_binary(H) -> unicode:characters_to_list(H);
|
|
build_list_string({ list_string, Line, Args }) ->
|
|
Meta = [{line,Line}],
|
|
{ { '.', Meta, [unicode, characters_to_list] }, Meta, [{ '<<>>', Meta, Args}] }.
|
|
|
|
build_atom({ atom, _Line, Atom }) when is_atom(Atom) -> Atom;
|
|
build_atom({ atom, Line, Args }) ->
|
|
Meta = [{line,Line}],
|
|
{ { '.', Meta, [erlang, binary_to_atom] }, Meta, [{ '<<>>', Meta, Args }, utf8] }.
|
|
|
|
%% Keywords
|
|
|
|
build_stab([{ '->', Meta, [Left, Right] }|T]) ->
|
|
{ '->', Meta, build_stab(Meta, T, Left, [Right], []) };
|
|
|
|
build_stab(Else) ->
|
|
build_block(Else).
|
|
|
|
build_stab(Old, [{ '->', New, [Left, Right] }|T], Marker, Temp, Acc) ->
|
|
H = { Marker, Old, build_block(lists:reverse(Temp)) },
|
|
build_stab(New, T, Left, [Right], [H|Acc]);
|
|
|
|
build_stab(Meta, [H|T], Marker, Temp, Acc) ->
|
|
build_stab(Meta, T, Marker, [H|Temp], Acc);
|
|
|
|
build_stab(Meta, [], Marker, Temp, Acc) ->
|
|
H = { Marker, Meta, build_block(lists:reverse(Temp)) },
|
|
lists:reverse([H|Acc]).
|
|
|
|
%% Every time the parser sees a (unquote_splicing())
|
|
%% it assumes that a block is being spliced, wrapping
|
|
%% the splicing in a __block__. But in the stab clause,
|
|
%% we can have (unquote_splicing(1,2,3)) -> :ok, in such
|
|
%% case, we don't actually want the block, since it is
|
|
%% an arg style call. unwrap_splice unwraps the splice
|
|
%% from such blocks.
|
|
unwrap_splice([{ '__block__', [], [{ unquote_splicing, _, _ }] = Splice }]) ->
|
|
Splice;
|
|
|
|
unwrap_splice(Other) -> Other.
|
|
|
|
unwrap_when(Args) ->
|
|
case elixir_tree_helpers:split_last(Args) of
|
|
{ Start, { 'when', Meta, [_, _] = End } } ->
|
|
[{ 'when', Meta, Start ++ End }];
|
|
{ _, _ } ->
|
|
Args
|
|
end.
|
|
|
|
%% Errors
|
|
|
|
throw(Line, Error, Token) ->
|
|
throw({ error, { Line, ?MODULE, [Error, Token] }}).
|
|
|
|
throw_no_parens_strict(Token) ->
|
|
throw(?line(Token), "invalid comma inside parenthesis. If you are making a "
|
|
"function call, do not insert spaces in between the function name and the "
|
|
"opening parentheses. Syntax error before: ", ")").
|