24 lines
1.1 KiB
Text
24 lines
1.1 KiB
Text
PyBison is a Python binding to the Bison (yacc) and Flex (lex)
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parser-generator utilities.
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It allows parsers to be quickly and easily developed as Python class
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declarations, and for these parsers to take advantage of the fast and
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powerful C-based Bison/Flex.
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Users write a subclass of a basic Parser object, containing a set of methods
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and attributes specifying the grammar and lexical analysis rules, and taking
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callbacks for providing parser input, and receiving parser target events.
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Features
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* Runs at near the speed of C-based parsers, due to direct hooks into
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bison-generated C code
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* Full LALR(1) grammar support
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* Includes a utility to convert your legacy grammar (.y) and scanner (.l)
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scripts into python modules compatible with PyBison
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* Easy to understand - the walkthrough and the examples will have you
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writing your own parsers in minutes
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* Comfortable and intuitive callback mechanisms
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* Can export parse tree to XML with a simple method call
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* Can reconstitute a parse tree from XML
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WWW: http://www.freenet.org.nz/python/pybison/
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