12 lines
575 B
Text
12 lines
575 B
Text
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Happy is a parser generator system for Haskell, similar to the tool
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`yacc' for C. Like `yacc', it takes a file containing an annotated BNF
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specification of a grammar and produces a Haskell module containing a
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parser for the grammar.
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Happy is flexible: you can have several Happy parsers in the same
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program, and several entry points to a single grammar. Happy can work
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in conjunction with a lexical analyser supplied by the user (either
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hand-written or generated by another program), or it can parse a
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stream of characters directly (but this isn't practical in most
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cases).
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