src/main/java/com/android/tools/r8/kotlin/KotlinMultiFileClassPartInfo.java

// Copyright (c) 2020, 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.kotlin;

import static com.android.tools.r8.kotlin.KotlinMetadataUtils.updateJvmMetadataVersionIfRequired;

import com.android.tools.r8.graph.AppView;
import com.android.tools.r8.graph.DexClass;
import com.android.tools.r8.graph.DexDefinitionSupplier;
import com.android.tools.r8.graph.DexEncodedMethod;
import com.android.tools.r8.utils.Pair;
import java.util.function.Consumer;
import kotlin.Metadata;
import kotlin.metadata.KmPackage;
import kotlin.metadata.jvm.JvmMetadataVersion;
import kotlin.metadata.jvm.KotlinClassMetadata.MultiFileClassPart;

// Holds information about Metadata.MultiFileClassPartInfo
public class KotlinMultiFileClassPartInfo implements KotlinClassLevelInfo {

  private final MultiFileClassPart classPart;
  private final KotlinPackageInfo packageInfo;
  private final String packageName;

  private KotlinMultiFileClassPartInfo(
      MultiFileClassPart classPart, KotlinPackageInfo packageInfo, String packageName) {
    this.classPart = classPart;
    this.packageInfo = packageInfo;
    this.packageName = packageName;
  }

  static KotlinMultiFileClassPartInfo create(
      MultiFileClassPart classPart,
      String packageName,
      DexClass clazz,
      AppView<?> appView,
      Consumer<DexEncodedMethod> keepByteCode) {
    KmPackage kmPackage = classPart.getKmPackage();
    return new KotlinMultiFileClassPartInfo(
        classPart, KotlinPackageInfo.create(kmPackage, clazz, appView, keepByteCode), packageName);
  }

  @Override
  public boolean isMultiFileClassPart() {
    return true;
  }

  @Override
  public KotlinMultiFileClassPartInfo asMultiFileClassPart() {
    return this;
  }

  @Override
  public Pair<Metadata, Boolean> rewrite(DexClass clazz, AppView<?> appView) {
    KmPackage kmPackage = new KmPackage();
    boolean rewritten = packageInfo.rewrite(kmPackage, clazz, appView);
    updateJvmMetadataVersionIfRequired(classPart);
    classPart.setKmPackage(kmPackage);
    return Pair.create(classPart.write(), rewritten);
  }

  @Override
  public String getPackageName() {
    return packageName;
  }

  public String getModuleName() {
    return packageInfo.getModuleName();
  }

  @Override
  public JvmMetadataVersion getMetadataVersion() {
    return classPart.getVersion();
  }

  @Override
  public void trace(DexDefinitionSupplier definitionSupplier) {
    packageInfo.trace(definitionSupplier);
  }

  public String getFacadeClassName() {
    return classPart.getFacadeClassName();
  }
}