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A Compact Guide to Lex & Yacc

A Compact Guide to Lex & Yacc
Author: Tom Niemann Portland, Oregon
Url: http://www.epaperpress.com/lexandyacc/index.html
Format: Pdf
Category: Compilers and Languages
Pages: 39
Clicks: 2573

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 Overview 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 construct a sophisticated calculator. Conventional arithmetic operations and control statements, such as if-else and while, are implemented. With minor changes, we convert the calculator into a compiler for a stack-based machine. The remaining sections discuss issues that commonly arise in compiler writing.

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