语法分析器 java版 编译课程综合训练

一个VisualC++实现的C-语言的编译器-A VisualC++ Realize the C-language compiler

有限自动机的运行，利用状态表和有限自动机的运行原理，识别一个输入串是否为一个有效的无符号定点实数。-of the operation, the use of tables and limited state of the automatic machine operation principle, to identify whether an input string as a symbol of effective non-sentinel real.

语法分析器，实现pascal语言的分析，对源程序从左到右进行扫描，对组成源程序的字符串拼接成为单词；并把其并把其转换成属性字输出,并管理符号表，处理词法错误。-Parser to realize pascal language analysis, source code is scanned from left to right, to the composition of a string of source code splicing into words and its properties and to convert it into a word output, and manage the symbol table, dealing with lexical错误.

目标代码生成，从四元式到汇编语言的翻译-object code generation, from four yuan to the compilation-language translation.

一个简单的编译器，有词法分析，语法分析，代码生成-a simple compiler, lexical analysis, grammar analysis, code generation

thread 多线程演示-thread multithreading demonstrates

LL(1)文法使用的是确定的自顶向下的分析技术。LL(1)的含义是：第一个L表明自顶向下分析是从左向右扫描输入串，第2个L表明分析过程中将使用最左推导，1表明只需向右看一个符号便可决定如何推导，即选择哪个产生式(规则)进行推导。 LL(1)文法的判别需要依次计算FIRST集、FOLLOW集和SELLECT集,然后判断是否为LL(1)文法,最后再进行句子分析。 -LL (1) grammar using a set top-down analysis techniques. LL (1) the meaning is: the first one L shows a top-down analysis is a scan input string from left to right, the first two L shows the analysis process will be the most left-derivation, one that will be just right to see a sign can decide how to derive, choose what Production (rules) for derivation. LL (1) grammar, followed by calculation of the discriminant needs FIRST sets, FOLLOW sets and SELLECT set, and then determine whether to LL (1) grammar, the last sentence further analysis.

编译原理实验中的yacc源码，是一个基于小类C语言的yacc程序，有助于学习yacc的编写。-principle experiment compiler generates the source code, is based on a subset of the C language yacc procedures, contribute to the preparation of learning yacc.

信息管理系统！很简单的课程设计！类似于城市信息交换的网站！-Information Management System! The curriculum design is very simple! Exchange of information similar to the city website!

用c编写的语法解析器，能进行词法和语法分析-c prepared with the parser can make grammatical and lexical analysis