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/******************************************************************************
*
*
*
*
* Copyright (C) 1997-2001 by Dimitri van Heesch.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation under the terms of the GNU General Public License is hereby
* granted. No representations are made about the suitability of this software
* for any purpose. It is provided "as is" without express or implied warranty.
* See the GNU General Public License for more details.
*
* Documents produced by Doxygen are derivative works derived from the
* input used in their production; they are not affected by this license.
*
*/
%{
#include "constexp.h"
#include "cppvalue.h"
#include "ce_parse.h" // generated header file
#define YY_NO_UNPUT
#define YY_NEVER_INTERACTIVE 1
QCString strToken;
static const char *inputString;
static int inputPosition;
CPPValue resultValue;
#undef YY_INPUT
#define YY_INPUT(buf,result,max_size) result=yyread(buf,max_size);
static int yyread(char *buf,int max_size)
{
int c=0;
while( c < max_size && inputString[inputPosition] )
{
*buf = inputString[inputPosition++] ;
c++; buf++;
}
return c;
}
%}
%%
"?" { return TOK_QUESTIONMARK; }
":" { return TOK_COLON; }
"||" { return TOK_OR; }
"&&" { return TOK_AND; }
"|" { return TOK_BITWISEOR; }
"^" { return TOK_BITWISEXOR; }
"&" { return TOK_AMPERSAND; }
"!=" { return TOK_NOTEQUAL; }
"==" { return TOK_EQUAL; }
"<" { return TOK_LESSTHAN; }
">" { return TOK_GREATERTHAN; }
"<=" { return TOK_LESSTHANOREQUALTO; }
">=" { return TOK_GREATERTHANOREQUALTO; }
"<<" { return TOK_SHIFTLEFT; }
">>" { return TOK_SHIFTRIGHT; }
"+" { return TOK_PLUS; }
"-" { return TOK_MINUS; }
"*" { return TOK_STAR; }
"/" { return TOK_DIVIDE; }
"%" { return TOK_MOD; }
"~" { return TOK_TILDE; }
"!" { return TOK_NOT; }
"(" { return TOK_LPAREN; }
")" { return TOK_RPAREN; }
"'"(([^\'\n\r\\]+)|(\\(([ntvbrfa\\?'\"])|([0-9]+)|([xX][0-9a-fA-F]+))))"'" {
strToken=yytext;
return TOK_CHARACTER;
}
0[0-7]*[uUlL]* { strToken=yytext;
return TOK_OCTALINT;
}
[1-9][0-9]*[uUlL]* { strToken=yytext;
return TOK_DECIMALINT;
}
(0x|0X)[0-9a-fA-F]+[uUlL]* { strToken=yytext; return TOK_HEXADECIMALINT; }
(([0-9]+\.[0-9]*)|([0-9]*\.[0-9]+))([eE]([\-\+])?[0-9]+)?([fFlL])? {
strToken=yytext; return TOK_FLOAT;
}
([0-9]+[eE])([\-\+])?[0-9]+([fFlL])? {
strToken=yytext; return TOK_FLOAT;
}
.
\n
%%
bool parseCppExpression(const QCString &s)
{
//printf("Expression: `%s'\n",s.data());
inputString = s;
inputPosition = 0;
cppExpYYrestart( cppExpYYin );
cppExpYYparse();
//printf("Result: %ld\n",(long)resultValue);
return (long)resultValue!=0;
}
extern "C" {
int cppExpYYwrap() { return 1; }
}
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