83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
/*============================================================================
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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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#include "cmStandardIncludes.h"
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#include <stack>
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#include <cmsys/RegularExpression.hxx>
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class cmTarget;
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class cmMakefile;
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class cmListFileBacktrace;
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struct cmGeneratorExpressionEvaluator;
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class cmCompiledGeneratorExpression;
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/** \class cmGeneratorExpression
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* \brief Evaluate generate-time query expression syntax.
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*
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* cmGeneratorExpression instances are used by build system generator
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* implementations to evaluate the $<> generator expression syntax.
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* Generator expressions are evaluated just before the generate step
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* writes strings into the build system. They have knowledge of the
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* build configuration which is not available at configure time.
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*/
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class cmGeneratorExpression
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{
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public:
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/** Construct. */
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cmGeneratorExpression(cmListFileBacktrace const& backtrace);
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~cmGeneratorExpression();
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const cmCompiledGeneratorExpression& Parse(std::string const& input);
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const cmCompiledGeneratorExpression& Parse(const char* input);
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private:
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cmGeneratorExpression(const cmGeneratorExpression &);
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void operator=(const cmGeneratorExpression &);
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cmListFileBacktrace const& Backtrace;
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cmCompiledGeneratorExpression *CompiledExpression;
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};
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class cmCompiledGeneratorExpression
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{
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public:
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const char* Evaluate(cmMakefile* mf, const char* config,
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bool quiet = false) const;
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/** Get set of targets found during evaluations. */
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std::set<cmTarget*> const& GetTargets() const
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{ return this->Targets; }
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~cmCompiledGeneratorExpression();
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private:
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cmCompiledGeneratorExpression(cmListFileBacktrace const& backtrace,
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const std::vector<cmGeneratorExpressionEvaluator*> &evaluators,
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const char *input, bool needsParsing);
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friend class cmGeneratorExpression;
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cmCompiledGeneratorExpression(const cmCompiledGeneratorExpression &);
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void operator=(const cmCompiledGeneratorExpression &);
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cmListFileBacktrace const& Backtrace;
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const std::vector<cmGeneratorExpressionEvaluator*> Evaluators;
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const char* const Input;
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const bool NeedsParsing;
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mutable std::set<cmTarget*> Targets;
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mutable std::string Output;
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};
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