75 строки
2.1 KiB
Plaintext
75 строки
2.1 KiB
Plaintext
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%{
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/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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/*
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This file must be translated to C and modified to build everywhere.
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Run flex like this:
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flex --prefix=cmExpr_yy --header-file=cmExprLexer.h -ocmExprLexer.cxx cmExprLexer.in.l
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Modify cmExprLexer.cxx:
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- remove TABs
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- remove use of the 'register' storage class specifier
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- remove "yyscanner" argument from these methods:
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yy_fatal_error, cmExpr_yyalloc, cmExpr_yyrealloc, cmExpr_yyfree
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- remove all YY_BREAK lines occurring right after return statements
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- change while ( 1 ) to for(;;)
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Modify cmExprLexer.h:
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- remove TABs
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- remove the yy_init_globals function
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- remove the block that includes unistd.h
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- remove #line directives (avoids bogus warning on old Sun)
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*/
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#include "cmStandardLexer.h"
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#include "cmExprParserHelper.h"
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/* Replace the lexer input function. */
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#undef YY_INPUT
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#define YY_INPUT(buf, result, max_size) \
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{ result = yyextra->LexInput(buf, max_size); }
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/* Include the set of tokens from the parser. */
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#include "cmExprParserTokens.h"
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/*--------------------------------------------------------------------------*/
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%}
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%option reentrant
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%option noyywrap
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%pointer
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%%
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[0-9][0-9]* { yylvalp->Number = atoi(yytext); return exp_NUMBER; }
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"+" { return exp_PLUS; }
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"-" { return exp_MINUS; }
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"*" { return exp_TIMES; }
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"/" { return exp_DIVIDE; }
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"%" { return exp_MOD; }
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"\|" { return exp_OR; }
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"&" { return exp_AND; }
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"^" { return exp_XOR; }
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"~" { return exp_NOT; }
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"<<" { return exp_SHIFTLEFT; }
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">>" { return exp_SHIFTRIGHT; }
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"(" { return exp_OPENPARENT; }
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")" { return exp_CLOSEPARENT; }
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%%
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