src/main/java/com/android/tools/r8/utils/CompileDumpUtils.java

// 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.utils;

import com.android.tools.r8.KeepMethodForCompileDump;
import com.android.tools.r8.origin.Origin;
import com.android.tools.r8.origin.PathOrigin;
import com.android.tools.r8.profile.art.ArtProfileConsumer;
import com.android.tools.r8.profile.art.ArtProfileConsumerUtils;
import com.android.tools.r8.profile.art.ArtProfileProvider;
import com.android.tools.r8.profile.art.ArtProfileProviderUtils;
import com.android.tools.r8.references.MethodReference;
import com.android.tools.r8.references.Reference;
import com.android.tools.r8.startup.StartupProfileBuilder;
import com.android.tools.r8.startup.StartupProfileProvider;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.Files;
import java.nio.file.Path;

class CompileDumpUtils {

  @KeepMethodForCompileDump
  static ArtProfileProvider createArtProfileProviderFromDumpFile(Path artProfile) {
    return ArtProfileProviderUtils.createFromHumanReadableArtProfile(artProfile);
  }

  @KeepMethodForCompileDump
  static ArtProfileConsumer createResidualArtProfileConsumerFromDumpFile(Path residualArtProfile) {
    return ArtProfileConsumerUtils.create(residualArtProfile);
  }

  @KeepMethodForCompileDump
  static StartupProfileProvider createStartupProfileProviderFromDumpFile(Path path) {
    return new StartupProfileProvider() {

      @Override
      public void getStartupProfile(StartupProfileBuilder startupProfileBuilder) {
        try {
          try (BufferedReader bufferedReader = Files.newBufferedReader(path)) {
            while (bufferedReader.ready()) {
              String rule = bufferedReader.readLine();
              MethodReference methodReference = MethodReferenceUtils.parseSmaliString(rule);
              if (methodReference != null) {
                startupProfileBuilder.addStartupMethod(
                    startupMethodBuilder ->
                        startupMethodBuilder.setMethodReference(methodReference));
              } else {
                assert DescriptorUtils.isClassDescriptor(rule);
                startupProfileBuilder.addStartupClass(
                    startupClassBuilder ->
                        startupClassBuilder.setClassReference(Reference.classFromDescriptor(rule)));
              }
            }
          }
        } catch (IOException e) {
          throw new UncheckedIOException(e);
        }
      }

      @Override
      public Origin getOrigin() {
        return new PathOrigin(path);
      }
    };
  }
}