What is the Lex & Yacc tool ?

[omara007]

Lex & Yacc

what are these ?

 

[Ace-X]

Lex & Yacc

http://dinosaur.compilertools.net/

A compiler or interptreter for a programminning language is often decomposed into two parts:

1. Read the source program and discover its structure.
2. Process this structure, e.g. to generate the target program.

Lex and Yacc can generate program fragments that solve the first task.

The task of discovering the source structure again is decomposed into subtasks:

1. Split the source file into tokens (Lex).
2. Find the hierarchical structure of the program (Yacc).

 

[echo47]

Lex & Yacc

Try Google for many good answers. Here's one:
http://dinosaur.compilertools.net/

 

[omara007]

Re: Lex & Yacc

Any clue to where I can get this stuff from ? .. I can't find any download link in the link u mentioned !

 

[fragment]

Re: Lex & Yacc

Any unix OS have lex and yacc.
In linux it named flex and bison .
There are also Windows versions.

 

[omara007]

Re: Lex & Yacc

Any unix OS have lex and yacc.
In linux it named flex and bison .
There are also Windows versions.

can u help me downloading the windows version ? .. is it under cygwin environment ?

 

[echo47]

Lex & Yacc

Cygwin is one way. Or try searching Google for lex yacc windows

 

[fragment]

Re: Lex & Yacc

There is a pure windows port Flex & Bison. Its a part of BisonFlex wizard for Visual C++ 6.0. It can be found for example at h**p://www.window95.com/windows/programming.html
But main problem with Flex/Bison is a license. All programs that use Flex/Bison must be GNU.