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96afb12087
This converts the CMake license to a pure 3-clause OSI-approved BSD License. We drop the previous license clause requiring modified versions to be plainly marked. We also update the CMake copyright to cover the full development time range.
51 lines
1.8 KiB
C++
51 lines
1.8 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 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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