Search Results for "glr"
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Showing 3 open source projects for "glr"
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DParser
Scannerless GLR parser generator
This project has moved to https://github.com/jplevyak/dparser The master on github is the stable. Please pull that for the very latest code. DParser is a scannerless GLR parser generator based on the Tomita algorithm. It is self-hosted and very easy to use. Grammars are written in a natural style of EBNF and regular expressions and support both speculative and final actions. -
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NaiveLanguageTools
C# lexer and parser
NLT is free, open-source C# lexer and GLR parser suite -- which translates to ability to parse ambiguous grammars. Grammar can be defined directly in code or (preferably) in separate file (lex/yacc-like) for included generator. If you understand/guess the meaning of grammar in C#: // scanning lexer.AddStringRule(")", match => SymbolEnum.RPAREN); // parsing prod_builder.AddProduction(SymbolEnum.exp, SymbolEnum.LPAREN, SymbolEnum.exp, SymbolEnum.RPAREN, (_1, e, _3) => (AstNode)e); or grammar in NLT format: // scanning /[A-Za-z_][A-Za-z_0-9]*/ -> IDENTIFIER, IdentifierSymbol.Create($text); // parsing program -> list:namespace_list { new Program(currCoords(), (Namespaces)list) }; you should be able to use it :-). ... -
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loon is a GLR parser generator that takes EBNF grammars as specifications. Tokens are specified in the grammar file, and it generates a parse tree instead of executing actions. A single grammar can output a parser in any supported language.
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