| // Copyright (c) 2022, the R8 project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| package com.android.tools.r8.ir.desugar.desugaredlibrary; |
| |
| import com.android.tools.r8.StringResource; |
| import com.android.tools.r8.graph.DexItemFactory; |
| import com.android.tools.r8.ir.desugar.desugaredlibrary.humanspecification.HumanDesugaredLibrarySpecificationParser; |
| import com.android.tools.r8.ir.desugar.desugaredlibrary.legacyspecification.LegacyDesugaredLibrarySpecificationParser; |
| import com.android.tools.r8.origin.Origin; |
| import com.android.tools.r8.utils.ExceptionDiagnostic; |
| import com.android.tools.r8.utils.Reporter; |
| import com.android.tools.r8.utils.StringDiagnostic; |
| import com.google.gson.JsonObject; |
| import com.google.gson.JsonParser; |
| import java.util.function.Consumer; |
| |
| public class DesugaredLibrarySpecificationParser { |
| |
| public static final String CONFIGURATION_FORMAT_VERSION_KEY = "configuration_format_version"; |
| private static final int MIN_HUMAN_CONFIGURATION_FORMAT_VERSION = 100; |
| |
| public static DesugaredLibrarySpecification parseDesugaredLibrarySpecification( |
| StringResource stringResource, |
| DexItemFactory dexItemFactory, |
| Reporter reporter, |
| boolean libraryCompilation, |
| int minAPILevel) { |
| Origin origin = stringResource.getOrigin(); |
| assert origin != null; |
| String jsonConfigString; |
| JsonObject jsonConfig; |
| try { |
| jsonConfigString = stringResource.getString(); |
| JsonParser parser = new JsonParser(); |
| jsonConfig = parser.parse(jsonConfigString).getAsJsonObject(); |
| } catch (Exception e) { |
| throw reporter.fatalError(new ExceptionDiagnostic(e, origin)); |
| } |
| |
| if (isHumanSpecification(jsonConfig, reporter, origin)) { |
| return new HumanDesugaredLibrarySpecificationParser( |
| dexItemFactory, reporter, libraryCompilation, minAPILevel) |
| .parse(origin, jsonConfigString, jsonConfig); |
| } |
| return new LegacyDesugaredLibrarySpecificationParser( |
| dexItemFactory, reporter, libraryCompilation, minAPILevel) |
| .parse(origin, jsonConfigString, jsonConfig); |
| } |
| |
| public static DesugaredLibrarySpecification parseDesugaredLibrarySpecificationforTesting( |
| StringResource stringResource, |
| DexItemFactory dexItemFactory, |
| Reporter reporter, |
| boolean libraryCompilation, |
| int minAPILevel, |
| Consumer<TopLevelFlagsBuilder<?>> topLevelFlagsAmender) { |
| Origin origin = stringResource.getOrigin(); |
| assert origin != null; |
| String jsonConfigString; |
| JsonObject jsonConfig; |
| try { |
| jsonConfigString = stringResource.getString(); |
| JsonParser parser = new JsonParser(); |
| jsonConfig = parser.parse(jsonConfigString).getAsJsonObject(); |
| } catch (Exception e) { |
| throw reporter.fatalError(new ExceptionDiagnostic(e, origin)); |
| } |
| if (isHumanSpecification(jsonConfig, reporter, origin)) { |
| return new HumanDesugaredLibrarySpecificationParser( |
| dexItemFactory, reporter, libraryCompilation, minAPILevel) |
| .parse(origin, jsonConfigString, jsonConfig, topLevelFlagsAmender); |
| } |
| return new LegacyDesugaredLibrarySpecificationParser( |
| dexItemFactory, reporter, libraryCompilation, minAPILevel) |
| .parse(origin, jsonConfigString, jsonConfig, topLevelFlagsAmender); |
| } |
| |
| public static boolean isHumanSpecification( |
| JsonObject jsonConfig, Reporter reporter, Origin origin) { |
| if (!jsonConfig.has(CONFIGURATION_FORMAT_VERSION_KEY)) { |
| throw reporter.fatalError( |
| new StringDiagnostic( |
| "Invalid desugared library configuration. Expected required key '" |
| + CONFIGURATION_FORMAT_VERSION_KEY |
| + "'", |
| origin)); |
| } |
| |
| return jsonConfig.get(CONFIGURATION_FORMAT_VERSION_KEY).getAsInt() |
| >= MIN_HUMAN_CONFIGURATION_FORMAT_VERSION; |
| } |
| } |