编译原理PLO语言的功能扩展C语言源程序

Many many developers all over the net respect NASM for what i s - a widespread (thus netwide), portable (thus netwide!), very flexible and mature assembler tool with support for many output formats (thus netwide!!). Now we have good news for you: NASM is licensed under LGPL. This means its development is open to even wider society of programmers wishing to improve their lovely assembler. The NASM project is now situated at SourceForge.net, the most famous Open Source development center on The Net. Visit our development page at http://nasm.2y.net/ and our SF project at http://sf.net/projects/nasm/

ll(1)语义分析器-ll (1) Semantic Analyzer

小型的Basic解释程序,能够将Basic源文件解释执行-small Basic explain procedures can be explained Basic source implementation

对给定的文法消除左递归。- To the grammar which assigns eliminates the left recursion.

编译的作业，对词法的分析分类以及发现错误，希望与大家交流，谢谢指教-Task of Compiler Implementation,To analyse and find error of Lexical,wish to communication with you,thanks.

在本编译程序中,源语言为PL/0语言,目标语言为假想栈式计算机的汇编语言.PL/0语言是Pascal语言的一个子集，PL/0的编译程序包括了对PL/0语言源程序进行分析处理、编译生成类PCODE代码，并在虚拟机上解释运行生成的类PCODE代码的功能。 　　PL/0语言编译程序采用以语法分析为核心、一遍扫描的编译方法。词法分析和代码生成作为独立的子程序供语法分析程序调用。语法分析的同时，提供了出错报告功能。在源程序没有错误编译通过的情况下，调用类PCODE解释程序解释执行生成的类PCODE代码。 该软件为PL/0语言编译程序,所实现的扩充功能如下: 1.增加单词：保留字 ELSE，FOR，TO, DOWNTO 2.增加运算 +=，-=，++，-- 3.不等号# 改为 4.增加条件语句的ELSE子句 5.扩充语句: ①FOR := TO DO ②FOR := DOWNTO DO 其中，语句①的循环变量的步长为1， 语句②的循环变量的步长为-1。 概述 源文件： *.plo 目标文件： *.COD 实现平台：C＋＋ Builder6.0 -the compiler, the source language of PL/0 language, target language of the imaginary stack of computer assembly language. PL/0 language Pascal language is a subset of, PL/0 compilers including the right PL/0 language source analysis, category PCODE compiler code generation and the virtual machine running on to explain the formation PCODE category code functions. PL/0 language compiler

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工欲善其事，必先利其器，学好汇编离不开实践，这有各种汇编编辑器，总有合适的， 免的你寻找之苦 masm32v8 masm611 MasmEditor1600汇编集成-工欲善其事, its prerequisite, and learn the compilation can not be separated from practice, this compilation has all kinds of editor, there will always be appropriate to avoid the pain of you looking for the compilation of integrated masm32v8masm611MasmEditor1600

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software that use for writing the coding, also work with MPLAB for compiler. (ouput .hex file that can be use for design circuit (Proteus-software that use for writing the coding, also work with MPLAB for compiler. (ouput .hex file that can be use for design circuit (Proteus))