%{
/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing for details.  */
/*

This file must be translated to C++ and modified to build everywhere.

Run flex >= 2.6 like this:

  flex --nounistd -DFLEXINT_H --prefix=cmExpr_yy --header-file=cmExprLexer.h -ocmExprLexer.cxx cmExprLexer.in.l

Modify cmExprLexer.cxx:
  - remove trailing whitespace: sed -i 's/\s*$//' cmExprLexer.h cmExprLexer.cxx
  - remove blank lines at end of file
  - #include "cmStandardLexer.h" at the top
  - add cast in yy_scan_bytes for loop condition of _yybytes_len to size_t

*/

/* IWYU pragma: no_forward_declare yyguts_t */

#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; }

%%