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 ...
A Guide to Lex & Yacc - University of Maryland, Baltimore County
This tutorial introduces the basic concepts of lex and yacc and describes how you can use the programs to produce a simple desk calculator. New users should work through the tutorial to get a feel for how to use lex and yacc.
Yacc (Yet Another Compiler-Compiler) is a computer program for the Unix operating system developed by Stephen C. Johnson. It is a lookahead left-to-right rightmost derivation (LALR) parser generator, generating a LALR parser (the part of a compiler that tries to make syntactic sense of the source code) based on a formal grammar, written in a notation similar to Backus–Naur form (BNF). [1 ...
YACC is an LALR parser generator developed at the beginning of the 1970s by Stephen C. Johnson for the Unix operating system. It automatically generates the LALR (1) parsers from formal grammar specifications. YACC plays an important role in compiler and interpreter development since it provides a means to specify the grammar of a language and to produce parsers that either interpret or ...
Introduction to YACC YACC (Yet Another Compiler Compiler) is a tool used to generate a parser. This document is a tutorial for the use of YACC to generate a parser for ExpL. YACC translates a given Context Free Grammar (CFG) specifications (input in input_file.y) into a C implementation (y.tab.c) of a corresponding push down automaton (i.e., a finite state machine with a stack). This C program ...