mirror of
https://github.com/dart-lang/sdk
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e9f7cab5ca
Change-Id: Ieec55a99e9020f8f3962654e07518726d9f66fc4 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/249540 Commit-Queue: Devon Carew <devoncarew@google.com> Reviewed-by: Alexander Thomas <athom@google.com>
125 lines
3.9 KiB
Dart
125 lines
3.9 KiB
Dart
// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'dart:io' show File, Platform;
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import 'package:yaml/yaml.dart' show YamlMap, loadYaml;
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void main() {
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YamlMap yaml = loadYaml(File.fromUri(computeYamlFile()).readAsStringSync());
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final currentVersion = getAsVersionNumber(yaml['current-version'])!;
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final enumNames = StringBuffer();
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final featureValues = StringBuffer();
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final featureNames = StringBuffer();
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YamlMap features = yaml['features'];
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for (var entry in features.entries) {
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final category = (entry.value as YamlMap)['category'];
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if (category == null || category == "vm" || category == "language") {
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final version = getAsVersionNumber((entry.value as YamlMap)['enabledIn']);
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if (version != null) {
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final value = isGreaterOrEqualVersion(currentVersion, version);
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final name = entry.key.replaceAll('-', '_');
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enumNames.write(' $name,\n');
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featureValues.write(' $value,\n');
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featureNames.write(' "${entry.key}",\n');
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}
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}
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}
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final h = '''
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// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// NOTE: THIS FILE IS GENERATED. DO NOT EDIT.
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//
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// Instead modify 'tools/experimental_features.yaml' and run
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// 'dart tools/generate_experimental_flags.dart' to update.
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//
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// Current version: ${currentVersion.join('.')}
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#ifndef RUNTIME_VM_EXPERIMENTAL_FEATURES_H_
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#define RUNTIME_VM_EXPERIMENTAL_FEATURES_H_
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namespace dart {
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enum class ExperimentalFeature {
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$enumNames};
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bool GetExperimentalFeatureDefault(ExperimentalFeature feature);
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const char* GetExperimentalFeatureName(ExperimentalFeature feature);
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} // namespace dart
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#endif // RUNTIME_VM_EXPERIMENTAL_FEATURES_H_
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''';
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final cc = '''
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// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// NOTE: THIS FILE IS GENERATED. DO NOT EDIT.
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//
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// Instead modify 'tools/experimental_features.yaml' and run
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// 'dart tools/generate_experimental_flags.dart' to update.
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//
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// Current version: ${currentVersion.join('.')}
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#include "vm/experimental_features.h"
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#include <cstring>
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#include "platform/assert.h"
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#include "vm/globals.h"
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namespace dart {
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bool GetExperimentalFeatureDefault(ExperimentalFeature feature) {
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constexpr bool kFeatureValues[] = {
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$featureValues };
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ASSERT(static_cast<size_t>(feature) < ARRAY_SIZE(kFeatureValues));
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return kFeatureValues[static_cast<int>(feature)];
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}
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const char* GetExperimentalFeatureName(ExperimentalFeature feature) {
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constexpr const char* kFeatureNames[] = {
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$featureNames };
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ASSERT(static_cast<size_t>(feature) < ARRAY_SIZE(kFeatureNames));
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return kFeatureNames[static_cast<int>(feature)];
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}
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} // namespace dart
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''';
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File.fromUri(computeHFile()).writeAsStringSync(h);
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File.fromUri(computeCcFile()).writeAsStringSync(cc);
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}
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Uri computeYamlFile() {
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return Platform.script.resolve("experimental_features.yaml");
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}
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Uri computeCcFile() {
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return Platform.script.resolve("../runtime/vm/experimental_features.cc");
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}
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Uri computeHFile() {
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return Platform.script.resolve("../runtime/vm/experimental_features.h");
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}
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List<num>? getAsVersionNumber(dynamic value) {
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if (value == null) return null;
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final version = List.of("$value".split(".").map(int.parse));
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while (version.length < 3) {
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version.add(0);
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}
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return version;
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}
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bool isGreaterOrEqualVersion(List<num> left, List<num> right) {
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assert(left.length == right.length);
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for (var i = 0; i < left.length; ++i) {
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if (left[i] != right[i]) return left[i] > right[i];
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}
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return true;
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}
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