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git-svn-id: https://linkchecker.svn.sourceforge.net/svnroot/linkchecker/trunk/linkchecker@5 e7d03fd6-7b0d-0410-9947-9c21f3af8025
51 lines
1,004 B
Text
51 lines
1,004 B
Text
#
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# this is a Grammar Spec for parsing PyLR style
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# Grammars
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#
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#
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# this is the pydefs section, where you name the output class
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# , add code, state how to initialize the lexer
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#
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_class GrammarParser
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_code import PyLR.Lexers
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_code import PyLR.Parser
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_lex PyLR.Lexers.GrammarLex()
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#
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# this is the Grammar spec part, where you specify
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# the productions and optionally their corresponding
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# method names in the generated Parser class (or subclasses
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# of it)
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#
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"""
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pspec: gspec |
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pydefs gspec;
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gspec: GDEL lhsdeflist GDEL;
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pydefs: pydefs pydef |
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pydef;
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pydef: LEX (lexdef) |
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CODE (addcode) |
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CLASS (classname);
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lhsdeflist: lhsdeflist lhsdef |
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lhsdef;
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lhsdef: ID COLON rhslist SCOLON (lhsdef);
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rhslist: rhs (singletolist) |
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rhslist OR rhs (rhslist_OR_rhs);
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rhs: rhsidlist (rhs_idlist) |
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rhsidlist LPAREN ID RPAREN (rhs_idlist_func);
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rhsidlist: idlist
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| (rhseps);
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idlist: idlist ID (idl_idlistID) |
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ID (idlistID);
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"""
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