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e39debae11
This is future-proofing the version part of the upcoming
feature. There currently no features that require that
but it's possible that they'd be added in the future.
(cherry picked from commit 4909b9baed)
75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
//===--- SupportedFeatures.cpp - Supported features printing --------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2025 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#include <array>
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#include <vector>
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#include "swift/Basic/Feature.h"
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#include "swift/Frontend/Frontend.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace swift;
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namespace swift {
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namespace features {
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/// Print information about what features upcoming/experimental are
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/// supported by the compiler.
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/// The information includes whether a feature is adoptable and for
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/// upcoming features - what is the first mode it's introduced.
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void printSupportedFeatures(llvm::raw_ostream &out) {
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std::array upcoming{
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#define LANGUAGE_FEATURE(FeatureName, SENumber, Description)
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#define UPCOMING_FEATURE(FeatureName, SENumber, Version) Feature::FeatureName,
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#include "swift/Basic/Features.def"
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};
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std::vector<swift::Feature> experimental{{
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#define LANGUAGE_FEATURE(FeatureName, SENumber, Description)
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#define EXPERIMENTAL_FEATURE(FeatureName, AvailableInProd) Feature::FeatureName,
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#include "swift/Basic/Features.def"
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}};
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// Include only experimental features that are available in production.
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llvm::erase_if(experimental, [](auto &feature) {
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return feature.isAvailableInProduction();
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});
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out << "{\n";
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auto printFeature = [&out](const Feature &feature) {
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out << " ";
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out << "{ \"name\": \"" << feature.getName() << "\"";
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if (feature.isMigratable()) {
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out << ", \"migratable\": true";
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}
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if (auto version = feature.getLanguageVersion()) {
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out << ", \"enabled_in\": \"" << *version << "\"";
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}
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out << " }";
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};
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out << " \"features\": {\n";
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out << " \"upcoming\": [\n";
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llvm::interleave(upcoming, printFeature, [&out] { out << ",\n"; });
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out << "\n ],\n";
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out << " \"experimental\": [\n";
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llvm::interleave(experimental, printFeature, [&out] { out << ",\n"; });
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out << "\n ]\n";
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out << " }\n";
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out << "}\n";
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}
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} // end namespace features
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} // end namespace swift
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