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path: root/spec/lexer.go (follow)
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* Add a token position and detailed info to a lexical error messageRyo Nihei2021-07-281-5/+7
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* Add literal pattern syntax and change tree structure syntaxRyo Nihei2021-07-221-1/+17
| | | | | | - Literal patterns don't interpret the special characters of regular expressions. In other words, 'abc|def' matches only `abc|def`, not `abc` or `def`. - Change tree structure syntax from '(...) to #(...).
* Detect multiple semantic errors in a single parseRyo Nihei2021-07-181-2/+2
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* Add token positions to an ASTRyo Nihei2021-07-181-8/+8
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* Add a line number to token error messagesRyo Nihei2021-07-171-4/+17
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* Add a line number to error messagesRyo Nihei2021-07-161-22/+41
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* Prohibit defining identifiers beginning with an underscoreRyo Nihei2021-07-021-0/+3
| | | | Identifiers beginning with an underscore are used as auto-generated identifiers.
* Simplify syntax of modifiers and semantic actionsRyo Nihei2021-06-301-56/+87
| | | | Modifiers and semantic actions are represented by directives following the '#' symbol.
* Add ast actionRyo Nihei2021-06-281-0/+29
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* Add syntax of fragmentRyo Nihei2021-06-201-0/+3
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* Add syntax of modifiers and actionsRyo Nihei2021-06-201-0/+6
| | | | | Currently, a mode modifier and push/pop actions are available. The modifier and the actions make sense in only lexical specifications.
* Add syntax of commentsRyo Nihei2021-06-201-0/+2
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* Add production syntaxRyo Nihei2021-06-151-0/+3
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* Add spec parserRyo Nihei2021-06-151-0/+137
Currently, the parser only supports definitions of lexical specification.