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64 lines
1.7 KiB
64 lines
1.7 KiB
%{
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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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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 >= 2.6 like this:
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flex --nounistd -DFLEXINT_H --noline --header-file=cmExprLexer.h -ocmExprLexer.cxx cmExprLexer.in.l
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Modify cmExprLexer.cxx:
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- remove trailing whitespace: sed -i 's/\s*$//' cmExprLexer.h cmExprLexer.cxx
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- remove blank lines at end of file: sed -i '${/^$/d;}' cmExprLexer.h cmExprLexer.cxx
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- #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmExprLexer.cxx
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*/
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/* IWYU pragma: no_forward_declare yyguts_t */
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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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#include <string>
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/*--------------------------------------------------------------------------*/
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%}
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%option prefix="cmExpr_yy"
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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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[ \t] {}
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[0-9][0-9]* { yylvalp->Number = std::stoll(yytext, nullptr, 10); return exp_NUMBER; }
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0[xX][0-9a-fA-F][0-9a-fA-F]* { yylvalp->Number = std::stoll(yytext, nullptr, 16); 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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. { yyextra->UnexpectedChar(yytext[0]); }
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%%
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