bdca8b01d2
#pragma once is a widely supported compiler pragma, even though it is not part of the C++ standard. Many of the issues keeping #pragma once from being standardized (distributed filesystems, build farms, hard links, etc.) do not apply to CMake - it is easy to build CMake on a single machine. CMake also does not install any header files which can be consumed by other projects (though cmCPluginAPI.h has been deliberately omitted from this conversion in case anyone is still using it.) Finally, #pragma once has been required to build CMake since at least August 2017 (7f29bbe6enabled server mode unconditionally, which had been using #pragma once since September 2016 (b13d3e0d)). The fact that we now require C++11 filters out old compilers, and it is unlikely that there is a compiler which supports C++11 but does not support #pragma once.
102 lines
3.8 KiB
C++
102 lines
3.8 KiB
C++
/* 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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#pragma once
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#include "cmConfigure.h" // IWYU pragma: keep
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#include <map>
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#include <set>
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#include <string>
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#include "cmListFileCache.h"
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struct GeneratorExpressionContent;
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struct cmGeneratorExpressionContext;
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class cmGeneratorTarget;
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#define CM_SELECT_BOTH(F, A1, A2) F(A1, A2)
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#define CM_SELECT_FIRST(F, A1, A2) F(A1)
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#define CM_SELECT_SECOND(F, A1, A2) F(A2)
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#define CM_FOR_EACH_TRANSITIVE_PROPERTY_IMPL(F, SELECT) \
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SELECT(F, EvaluatingIncludeDirectories, INCLUDE_DIRECTORIES) \
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SELECT(F, EvaluatingSystemIncludeDirectories, SYSTEM_INCLUDE_DIRECTORIES) \
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SELECT(F, EvaluatingCompileDefinitions, COMPILE_DEFINITIONS) \
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SELECT(F, EvaluatingCompileOptions, COMPILE_OPTIONS) \
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SELECT(F, EvaluatingAutoUicOptions, AUTOUIC_OPTIONS) \
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SELECT(F, EvaluatingSources, SOURCES) \
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SELECT(F, EvaluatingCompileFeatures, COMPILE_FEATURES) \
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SELECT(F, EvaluatingLinkOptions, LINK_OPTIONS) \
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SELECT(F, EvaluatingLinkDirectories, LINK_DIRECTORIES) \
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SELECT(F, EvaluatingLinkDepends, LINK_DEPENDS) \
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SELECT(F, EvaluatingPrecompileHeaders, PRECOMPILE_HEADERS)
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#define CM_FOR_EACH_TRANSITIVE_PROPERTY(F) \
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CM_FOR_EACH_TRANSITIVE_PROPERTY_IMPL(F, CM_SELECT_BOTH)
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#define CM_FOR_EACH_TRANSITIVE_PROPERTY_METHOD(F) \
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CM_FOR_EACH_TRANSITIVE_PROPERTY_IMPL(F, CM_SELECT_FIRST)
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#define CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(F) \
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CM_FOR_EACH_TRANSITIVE_PROPERTY_IMPL(F, CM_SELECT_SECOND)
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struct cmGeneratorExpressionDAGChecker
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{
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cmGeneratorExpressionDAGChecker(cmListFileBacktrace backtrace,
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cmGeneratorTarget const* target,
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std::string property,
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const GeneratorExpressionContent* content,
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cmGeneratorExpressionDAGChecker* parent);
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cmGeneratorExpressionDAGChecker(cmGeneratorTarget const* target,
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std::string property,
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const GeneratorExpressionContent* content,
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cmGeneratorExpressionDAGChecker* parent);
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enum Result
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{
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DAG,
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SELF_REFERENCE,
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CYCLIC_REFERENCE,
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ALREADY_SEEN
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};
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Result Check() const;
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void ReportError(cmGeneratorExpressionContext* context,
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const std::string& expr);
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bool EvaluatingGenexExpression() const;
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bool EvaluatingPICExpression() const;
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bool EvaluatingCompileExpression() const;
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bool EvaluatingLinkExpression() const;
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bool EvaluatingLinkOptionsExpression() const;
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bool EvaluatingLinkLibraries(cmGeneratorTarget const* tgt = nullptr) const;
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#define DECLARE_TRANSITIVE_PROPERTY_METHOD(METHOD) bool METHOD() const;
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CM_FOR_EACH_TRANSITIVE_PROPERTY_METHOD(DECLARE_TRANSITIVE_PROPERTY_METHOD)
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#undef DECLARE_TRANSITIVE_PROPERTY_METHOD
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bool GetTransitivePropertiesOnly() const;
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void SetTransitivePropertiesOnly() { this->TransitivePropertiesOnly = true; }
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cmGeneratorExpressionDAGChecker const* Top() const;
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cmGeneratorTarget const* TopTarget() const;
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private:
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Result CheckGraph() const;
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void Initialize();
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private:
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const cmGeneratorExpressionDAGChecker* const Parent;
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cmGeneratorTarget const* Target;
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const std::string Property;
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mutable std::map<cmGeneratorTarget const*, std::set<std::string>> Seen;
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const GeneratorExpressionContent* const Content;
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const cmListFileBacktrace Backtrace;
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Result CheckResult;
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bool TransitivePropertiesOnly;
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};
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