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Produce clearer messages for syntax errors before a sigil

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Closes #3130
This commit is contained in:
Or Neeman
2015-03-05 06:25:59 -06:00
parent 4fea515cf2
commit 3ce822ecd2
2 changed files with 13 additions and 0 deletions
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lib/elixir/src/elixir_errors.erl
+7
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@@ -55,6 +55,13 @@ parse_error(Line, File, Error, <<>>) ->
parse_error(Line, File, <<"syntax error before: ">>, <<"'end'">>) ->
do_raise(Line, File, 'Elixir.SyntaxError', <<"unexpected token: end">>);
%% Produce a human-readable message for errors before a sigil
parse_error(Line, File, <<"syntax error before: ">>, <<"{sigil,", _Rest/binary>> = Full) ->
{ok, Tokens, _} = erl_scan:string(binary_to_list(Full)),
{ok, {sigil, _, Sigil, [Content], _}} = erl_parse:parse_term(Tokens ++ [{dot, 1}]),
Message = <<"syntax error before: sigil ~", Sigil," with content '", Content/binary, "'">>,
do_raise(Line, File, 'Elixir.SyntaxError', Message);
%% Aliases are wrapped in ['']
parse_error(Line, File, Error, <<"['", Token/binary>>) when is_binary(Error) ->
Rest =