软件包：btyacc（3.0 dfsg-1） [debports]
Backtracking parser generator based on byacc
btyacc is a hacked version of the original Berkeley "byacc". The main change to byacc is the addition of backtracking code, allowing you to try both alternatives in case of shift-reduce or reduce-reduce conflicts. As long as no backtracking takes place, the speed is comparable to bison's one.
Additional features:
- Enhanced support for storing of text position information for tokens. - Closes the potential *yacc/bison memory leak during error recovery. - Preprocessor directives like %ifdef, %include. - C friendly.
Related packages: bison, byacc, antlr