Quex is a lexical analyzer generator for C++ based on regular expressions in the traditional lex/flex style. However, quex implements the lexical anlyzer using a much faster approach, the so called 'directly coded' approach. Engines created with quex (and compiled with -DNDEBUG) are up to three times faster then engines created with flex.
Additionally quex provides features such as sophisticated lexer modes that can be inherited, mode transition events, indentation events, a token queue, and many 'code paste' actions that allow to modify the created C++ class in a handy manner.
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