语法分析器构造 借助于词法分析程序提供的分析结果，编写一个算符优先语法分析程序，程序能进行语法结构分析和错误检查并产生相应的归约信息。同时给出出错信息和错误类型，从而加深对语法分析的理解。 -parser using lexical analysis procedure for the analysis of results prepare a priority operator syntax analysis procedures, procedures for structural

LLLPG (Loyc LL(k) Parser Generator) is a new recursive-decent parser generator for C#, with a feature set slightly better than ANTLR version 2. LLLPG 1.0 is now virtually complete, and supports either Enhanced C# (EC#) or Loyc Expression Syntax (LES)