56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
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/*=========================================================================
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Program: CMake - Cross-Platform Makefile Generator
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Module: $RCSfile$
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Language: C++
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Date: $Date$
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Version: $Revision$
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Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
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See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices 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 cmMakefile;
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class cmListFileBacktrace;
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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 with an evaluation context and configuration. */
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cmGeneratorExpression(cmMakefile* mf, const char* config,
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cmListFileBacktrace const& backtrace);
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/** Evaluate generator expressions in a string. */
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const char* Process(std::string const& input);
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const char* Process(const char* input);
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private:
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cmMakefile* Makefile;
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const char* Config;
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cmListFileBacktrace const& Backtrace;
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std::vector<char> Data;
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std::stack<size_t> Barriers;
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cmsys::RegularExpression TargetInfo;
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bool Evaluate();
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bool Evaluate(const char* expr, std::string& result);
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bool EvaluateTargetInfo(std::string& result);
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};
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