lex question

"Antonio Linares" <alinares@fivetech.com>
23 Mar 1999 12:29:02 -0500

          From comp.compilers

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| List of all articles for this month |

From: "Antonio Linares" <alinares@fivetech.com>
Newsgroups: comp.compilers
Date: 23 Mar 1999 12:29:02 -0500
Organization: Telefonica Transmision de Datos
Keywords: C, parse, comment

We are looking for a way to implement C language #define directive for

      #define <idFunction>([<arg list>]) [<exp>]


      #define Max( x, y ) ( x > y)? x: y

Do you know how to do this using standard lex & yacc ? Any samples ?


[There's nothing in lex or yacc that makes it automatic, but macro
expansion is pretty easy, you keep a stack of sources with the real
input at the bottom and the macros you're expanding on top of that.

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