The syntax analyzer calls the scanner when it needs a new symbol . 当语法分析程序需要新符号时,它就调用扫描过程。
The syntax analyzer has one recursive procedure for each nonterminal u . 对于每个非终结符号U,语法分析程序都有一个递归过程。
The syntax analyzer has one recursive procedure for each nonterminal u 对于每个非终结符号u ,语法分析程序都有一个递归过程。
In addition , some programming techniques , such as recursion , are impossible to use - - for example , this rules out protocol handlers being recursive - descent parsers 此外,象递归之类的一些编程的技术不可能使用例如,递归消解了协议处理程序成为循环下降的语法分析程序的可能。
At the whole compiled system design , takes grammar as the base of program design , referring to hard plc working theoty , syntax analysis program as center to organize the whole compiled process 在编译程序总体设计中,以文法作为程序设计的依据,参照硬plc的工作原理并以语法分析程序为中心来组织整个编译过程。
The latter is the emphasis of this article . its hard core is the accidence analysis builder grammar _ lexer . mll and the syntax analysis builder grammarjpaser . mly . it transforms the fortran character string in the program , which would be processed automatic differentiation transform , into data stream of diversified syntax units 词法分析和语法分析部分又分为输入命令数据流以及fortran源程序数据流的词法分析和语法分析,后一部分是本文分析的重点,它以词法分析程序生成器grammarlexer . mll和语法分析程序生成器grammarpaser . mly为核心,将进行自动微分变换的fortran源代码字符串变换成各类语法单位的数据流。