[ 源代码： peg ]
软件包：peg（0.1.18-1 以及其他的）
recursive-descent parser generators for C
This package provides peg and leg, two utilities that read a Parsing Expression Grammar (PEG) and generate a recursive-descent parser for it.
Unlike lex and yacc, peg and leg support unlimited backtracking, provide ordered choice as a means for disambiguation, and can combine scanning (lexical analysis) and parsing (syntactic analysis) into a single activity.