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64 lines
1.6 KiB
64 lines
1.6 KiB
/* 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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#include "cmExperimental.h"
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#include <cassert>
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#include <cstddef>
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#include <string>
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#include "cmMakefile.h"
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#include "cmMessageType.h"
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#include "cmValue.h"
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namespace {
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/*
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* The `Uuid` fields of these objects should change periodically.
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* Search for other instances to keep the documentation and test suite
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* up-to-date.
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*/
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struct FeatureData
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{
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std::string const Uuid;
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std::string const Variable;
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std::string const Description;
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bool Warned;
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} LookupTable[] = {
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// CxxModuleCMakeApi
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{ "aa1f7df0-828a-4fcd-9afc-2dc80491aca7",
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"CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API",
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"CMake's C++ module support is experimental. It is meant only for "
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"experimentation and feedback to CMake developers.",
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false },
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};
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static_assert(sizeof(LookupTable) / sizeof(LookupTable[0]) ==
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static_cast<size_t>(cmExperimental::Feature::Sentinel),
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"Experimental feature lookup table mismatch");
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FeatureData& DataForFeature(cmExperimental::Feature f)
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{
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assert(f != cmExperimental::Feature::Sentinel);
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return LookupTable[static_cast<size_t>(f)];
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}
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}
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bool cmExperimental::HasSupportEnabled(cmMakefile const& mf, Feature f)
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{
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bool enabled = false;
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auto& data = DataForFeature(f);
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auto value = mf.GetDefinition(data.Variable);
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if (value == data.Uuid) {
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enabled = true;
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}
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if (enabled && !data.Warned) {
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mf.IssueMessage(MessageType::AUTHOR_WARNING, data.Description);
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data.Warned = true;
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}
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return enabled;
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}
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