happy-lib-2.1.5: Happy is a parser generator for Haskell implemented using this library
Happy is a parser generator for Haskell. Given a grammar
specification in BNF, Happy generates Haskell code to parse the
grammar. Happy works in a similar way to the yacc
tool for C.
This library provides the following functionality:
- Data type definitions for the Grammar AST type, capturing the information in .y-files (Happy.Grammar)
- A parser for happy grammar files (.y) to produce a Grammar (Happy.Frontend.*)
- Implementations of the text book algorithms that compute the LR action and
goto tables for the given
Grammar
(Happy.Tabular.*) - An LALR code generator to produce table-driven, deterministic parsing code in Haskell (Happy.Backend.LALR.*)
- A (less maintained) GLR code generator to produce table-driven, non-deterministic parsing code in Haskell, where ambiguous parses produce multiple parse trees (Happy.Backend.GLR.*)
Modules
happy-lib-2.1.5
- Happy