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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file LICENSE.rst or https://cmake.org/licensing for details. */
#include "cmExperimental.h"
#include <cassert>
#include <cstddef>
#include <string>
#include "cmGlobalGenerator.h"
#include "cmMakefile.h"
#include "cmMessageType.h"
#include "cmStringAlgorithms.h"
#include "cmValue.h"
namespace {
/*
* The `Uuid` fields of these objects should change periodically.
* Search for other instances to keep the documentation and test suite
* up-to-date.
*/
cmExperimental::FeatureData const LookupTable[] = {
// ExportPackageDependencies
{ "ExportPackageDependencies",
"1942b4fa-b2c5-4546-9385-83f254070067",
"CMAKE_EXPERIMENTAL_EXPORT_PACKAGE_DEPENDENCIES",
"CMake's EXPORT_PACKAGE_DEPENDENCIES support is experimental. It is meant "
"only for experimentation and feedback to CMake developers.",
{},
cmExperimental::TryCompileCondition::Always },
// CxxImportStd
{ "CxxImportStd",
"d0edc3af-4c50-42ea-a356-e2862fe7a444",
"CMAKE_EXPERIMENTAL_CXX_IMPORT_STD",
"CMake's support for `import std;` in C++23 and newer is experimental. It "
"is meant only for experimentation and feedback to CMake developers.",
{},
cmExperimental::TryCompileCondition::Always },
// ImportPackageInfo
{ "ImportPackageInfo",
"e82e467b-f997-4464-8ace-b00808fff261",
"CMAKE_EXPERIMENTAL_FIND_CPS_PACKAGES",
"CMake's support for importing package information in the Common Package "
"Specification format (via find_package) is experimental. It is meant "
"only for experimentation and feedback to CMake developers.",
{},
cmExperimental::TryCompileCondition::Always },
// ExportPackageInfo
{ "ExportPackageInfo",
"b80be207-778e-46ba-8080-b23bba22639e",
"CMAKE_EXPERIMENTAL_EXPORT_PACKAGE_INFO",
"CMake's support for exporting package information in the Common Package "
"Specification format is experimental. It is meant only for "
"experimentation and feedback to CMake developers.",
{},
cmExperimental::TryCompileCondition::Always },
// ExportBuildDatabase
{ "ExportBuildDatabase",
"73194a1d-c0b5-41b9-9190-a4512925e192",
"CMAKE_EXPERIMENTAL_EXPORT_BUILD_DATABASE",
"CMake's support for exporting build databases is experimental. It is "
"meant only for experimentation and feedback to CMake developers.",
{},
cmExperimental::TryCompileCondition::Never },
// Instrumentation
{ "Instrumentation",
"a37d1069-1972-4901-b9c9-f194aaf2b6e0",
"CMAKE_EXPERIMENTAL_INSTRUMENTATION",
"CMake's support for collecting instrumentation data is experimental. It "
"is meant only for experimentation and feedback to CMake developers.",
{},
cmExperimental::TryCompileCondition::Never },
};
static_assert(sizeof(LookupTable) / sizeof(LookupTable[0]) ==
static_cast<size_t>(cmExperimental::Feature::Sentinel),
"Experimental feature lookup table mismatch");
cmExperimental::FeatureData const& DataForFeature(cmExperimental::Feature f)
{
assert(f != cmExperimental::Feature::Sentinel);
return LookupTable[static_cast<size_t>(f)];
}
}
cmExperimental::FeatureData const& cmExperimental::DataForFeature(Feature f)
{
return ::DataForFeature(f);
}
cm::optional<cmExperimental::Feature> cmExperimental::FeatureByName(
std::string const& name)
{
size_t idx = 0;
for (auto const& feature : LookupTable) {
if (feature.Name == name) {
return static_cast<Feature>(idx);
}
++idx;
}
return {};
}
bool cmExperimental::HasSupportEnabled(cmMakefile const& mf, Feature f)
{
bool enabled = false;
FeatureData const& data = cmExperimental::DataForFeature(f);
if (cmValue value = mf.GetDefinition(data.Variable)) {
enabled = *value == data.Uuid;
if (mf.GetGlobalGenerator()->ShouldWarnExperimental(data.Name, *value)) {
if (enabled) {
mf.IssueMessage(MessageType::AUTHOR_WARNING, data.Description);
} else {
mf.IssueMessage(
MessageType::AUTHOR_WARNING,
cmStrCat(
data.Variable, " is set to incorrect value\n ", value,
"\n"
"See 'Help/dev/experimental.rst' in the source tree of this "
"version of CMake for documentation of the experimental feature "
"and the corresponding activation value. This project's code "
"may require changes to work with this CMake's version of the "
"feature."));
}
}
}
return enabled;
}
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