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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 (7f29bbe6 enabled 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.
50 lines
1.1 KiB
C++
50 lines
1.1 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 <utility>
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#include <vector>
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#include "cmListFileCache.h"
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/**
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* Graph edge representation. Most use cases just need the
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* destination vertex, so we support conversion to/from an int. We
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* also store boolean to indicate whether an edge is "strong".
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*/
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class cmGraphEdge
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{
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public:
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cmGraphEdge(int n, bool s, bool c, cmListFileBacktrace bt)
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: Dest(n)
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, Strong(s)
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, Cross(c)
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, Backtrace(std::move(bt))
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{
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}
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operator int() const { return this->Dest; }
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bool IsStrong() const { return this->Strong; }
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bool IsCross() const { return this->Cross; }
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cmListFileBacktrace const& GetBacktrace() const { return this->Backtrace; }
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private:
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int Dest;
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bool Strong;
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bool Cross;
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cmListFileBacktrace Backtrace;
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};
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struct cmGraphEdgeList : public std::vector<cmGraphEdge>
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{
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};
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struct cmGraphNodeList : public std::vector<int>
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{
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};
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struct cmGraphAdjacencyList : public std::vector<cmGraphEdgeList>
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{
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};
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