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74 lines
2.3 KiB
C++
74 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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