文件名称：lex yacc tutorial
文件大小：202KB
文件格式：PDF
更新时间：2010-05-10 02:25:20
lex yacc
This document explains how to construct a compiler using lex and yacc. Lex and yacc are tools used to generate lexical analyzers and parsers. I assume you can program in C, and understand data structures such as linked-lists and trees.
The introduction describes the basic building blocks of a compiler and explains the interaction between lex and yacc. The next two sections describe lex and yacc in more detail. With this background we can construct a sophisticated calculator. Conventional arithmetic operations and control statements, such as if-else and while, are implemented. With minor changes we will convert the calculator into a compiler for a stack-based machine. The remaining sections discuss issues that commonly arise in compiler writing. Source code for examples may be downloaded from the web site listed below.
Tom Niemann
Portland, Oregon