e48d84209c
Generator expressions whose output depends on the configuration now record that fact. The GetIncludeDirectories method can use that result to cache the include directories for later calls. GetIncludeDirectories is called multiple times for a target for each configuration, so this should restore performance for multi-config generators.
129 lines
3.9 KiB
C++
129 lines
3.9 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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#ifndef cmGeneratorExpression_h
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#define cmGeneratorExpression_h
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#include "cmStandardIncludes.h"
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#include "cmListFileCache.h"
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#include <stack>
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#include <cmsys/RegularExpression.hxx>
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#include <cmsys/auto_ptr.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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struct cmGeneratorExpressionDAGChecker;
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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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cmsys::auto_ptr<cmCompiledGeneratorExpression> Parse(
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std::string const& input);
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cmsys::auto_ptr<cmCompiledGeneratorExpression> Parse(const char* input);
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enum PreprocessContext {
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StripAllGeneratorExpressions,
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BuildInterface,
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InstallInterface
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};
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static std::string Preprocess(const std::string &input,
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PreprocessContext context);
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static void Split(const std::string &input,
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std::vector<std::string> &output);
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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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};
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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,
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cmTarget *headTarget = 0,
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cmTarget *currentTarget = 0,
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cmGeneratorExpressionDAGChecker *dagChecker = 0) const;
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const char* Evaluate(cmMakefile* mf, const char* config,
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bool quiet,
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cmTarget *headTarget,
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cmGeneratorExpressionDAGChecker *dagChecker) 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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std::map<cmStdString, cmStdString> const& GetSeenTargetProperties() const
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{ return this->SeenTargetProperties; }
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~cmCompiledGeneratorExpression();
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std::string GetInput() const
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{
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return this->Input;
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}
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cmListFileBacktrace GetBacktrace() const
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{
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return this->Backtrace;
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}
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bool GetHadContextSensitiveCondition() const
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{
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return this->HadContextSensitiveCondition;
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}
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private:
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cmCompiledGeneratorExpression(cmListFileBacktrace const& backtrace,
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const char *input);
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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 Backtrace;
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std::vector<cmGeneratorExpressionEvaluator*> Evaluators;
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const std::string Input;
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bool NeedsParsing;
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mutable std::set<cmTarget*> Targets;
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mutable std::map<cmStdString, cmStdString> SeenTargetProperties;
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mutable std::string Output;
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mutable bool HadContextSensitiveCondition;
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};
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#endif
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