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
...Licence : GPLKeywords : lexical analyzer generator, regular expression, c++, directly coded, python 
Take our 
