styx

combined parser/scanner generator for C/C++

The package facilitates application development including user-defined context free languages. Its development model deviates from the traditional lex/yacc pair (flex/bison in Debian) by automating tedious tasks which are commonly implemented in yacc's actions. Styx automatically derives a depth grammar, generates reentrant parsers that support persistent derivation trees, preserve full source information, support Unicode and are thread safe.