You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
2.2 KiB
79 lines
2.2 KiB
16 years ago
|
%{
|
||
|
|
/*=========================================================================
|
||
|
|
|
||
|
|
Program: CMake - Cross-Platform Makefile Generator
|
||
|
|
Module: $RCSfile: cmExprLexer.in.l,v $
|
||
|
|
Language: C++
|
||
|
|
Date: $Date: 2006-08-08 18:00:28 $
|
||
|
|
Version: $Revision: 1.3 $
|
||
|
|
|
||
|
|
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
|
||
|
|
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
|
||
|
|
|
||
|
|
This software is distributed WITHOUT ANY WARRANTY; without even
|
||
|
|
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||
|
|
PURPOSE. See the above copyright notices for more information.
|
||
|
|
|
||
|
|
=========================================================================*/
|
||
|
|
/*
|
||
|
|
|
||
|
|
This file must be translated to C and modified to build everywhere.
|
||
|
|
|
||
|
|
Run flex like this:
|
||
|
|
|
||
|
|
flex --prefix=cmExpr_yy --header-file=cmExprLexer.h -ocmExprLexer.cxx cmExprLexer.in.l
|
||
|
|
|
||
|
|
Modify cmExprLexer.cxx:
|
||
|
|
- remove TABs
|
||
|
|
- remove "yyscanner" argument from these methods:
|
||
|
|
yy_fatal_error, cmExpr_yyalloc, cmExpr_yyrealloc, cmExpr_yyfree
|
||
|
|
- remove all YY_BREAK lines occurring right after return statements
|
||
|
|
- change while ( 1 ) to for(;;)
|
||
|
|
|
||
|
|
Modify cmExprLexer.h:
|
||
|
|
- remove TABs
|
||
|
|
- remove the yy_init_globals function
|
||
|
|
- remove the block that includes unistd.h
|
||
|
|
- remove #line directives (avoids bogus warning on old Sun)
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "cmStandardLexer.h"
|
||
|
|
|
||
|
|
#include "cmExprParserHelper.h"
|
||
|
|
|
||
|
|
/* Replace the lexer input function. */
|
||
|
|
#undef YY_INPUT
|
||
|
|
#define YY_INPUT(buf, result, max_size) \
|
||
|
|
{ result = yyextra->LexInput(buf, max_size); }
|
||
|
|
|
||
|
|
/* Include the set of tokens from the parser. */
|
||
|
|
#include "cmExprParserTokens.h"
|
||
|
|
|
||
|
|
/*--------------------------------------------------------------------------*/
|
||
|
|
%}
|
||
|
|
|
||
|
|
%option reentrant
|
||
|
|
%option noyywrap
|
||
|
|
%pointer
|
||
|
|
|
||
|
|
%%
|
||
|
|
|
||
|
|
[0-9][0-9]* { yylvalp->Number = atoi(yytext); return exp_NUMBER; }
|
||
|
|
|
||
|
|
"+" { return exp_PLUS; }
|
||
|
|
"-" { return exp_MINUS; }
|
||
|
|
"*" { return exp_TIMES; }
|
||
|
|
"/" { return exp_DIVIDE; }
|
||
|
|
"%" { return exp_MOD; }
|
||
|
|
"\|" { return exp_OR; }
|
||
|
|
"&" { return exp_AND; }
|
||
|
|
"^" { return exp_XOR; }
|
||
|
|
"~" { return exp_NOT; }
|
||
|
|
"<<" { return exp_SHIFTLEFT; }
|
||
|
|
">>" { return exp_SHIFTRIGHT; }
|
||
|
|
"(" { return exp_OPENPARENT; }
|
||
|
|
")" { return exp_CLOSEPARENT; }
|
||
|
|
|
||
|
|
%%
|