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ProGuardCORE is a free library to read, analyze, modify, and write Java class files.
There is a newer version: 9.1.6
/*
 * ProGuardCORE -- library to process Java bytecode.
 *
 * Copyright (c) 2002-2020 Guardsquare NV
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package proguard.classfile.kotlin;

import static proguard.classfile.util.ClassUtil.*;

import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;
import proguard.classfile.*;
import proguard.classfile.kotlin.visitor.KotlinAnnotationArgumentVisitor;
import proguard.classfile.kotlin.visitor.KotlinAnnotationVisitor;
import proguard.classfile.visitor.ClassVisitor;
import proguard.util.*;

public class KotlinAnnotation extends SimpleProcessable implements Processable {
  public String className;
  public Clazz referencedAnnotationClass;

  public List arguments;

  public KotlinAnnotation(String className, List arguments) {
    this.className = className;
    this.arguments = arguments;
  }

  public KotlinAnnotation(String className) {
    this(className, new ArrayList<>());
  }

  public void accept(
      Clazz clazz, KotlinAnnotatable annotatable, KotlinAnnotationVisitor kotlinAnnotationVisitor) {
    kotlinAnnotationVisitor.visitAnyAnnotation(clazz, annotatable, this);
  }

  public void accept(
      Clazz clazz,
      KotlinTypeMetadata kotlinTypeMetadata,
      KotlinAnnotationVisitor kotlinAnnotationVisitor) {
    kotlinAnnotationVisitor.visitTypeAnnotation(clazz, kotlinTypeMetadata, this);
  }

  public void accept(
      Clazz clazz,
      KotlinTypeAliasMetadata kotlinTypeAliasMetadata,
      KotlinAnnotationVisitor kotlinAnnotationVisitor) {
    kotlinAnnotationVisitor.visitTypeAliasAnnotation(clazz, kotlinTypeAliasMetadata, this);
  }

  public void accept(
      Clazz clazz,
      KotlinTypeParameterMetadata kotlinTypeParameterMetadata,
      KotlinAnnotationVisitor kotlinAnnotationVisitor) {
    kotlinAnnotationVisitor.visitTypeParameterAnnotation(clazz, kotlinTypeParameterMetadata, this);
  }

  public void referencedClassAccept(ClassVisitor classVisitor) {
    if (this.referencedAnnotationClass != null) {
      this.referencedAnnotationClass.accept(classVisitor);
    }
  }

  public void argumentsAccept(
      Clazz clazz, KotlinAnnotatable annotatable, KotlinAnnotationArgumentVisitor visitor) {
    this.arguments.forEach(argument -> argument.accept(clazz, annotatable, this, visitor));
  }

  // Implementations for Object.

  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    KotlinAnnotation that = (KotlinAnnotation) o;
    return className.equals(that.className) && arguments.equals(that.arguments);
  }

  @Override
  public int hashCode() {
    return Objects.hash(className, arguments);
  }

  @Override
  public String toString() {
    return externalClassName(this.className)
        + "("
        + this.arguments.stream().map(Objects::toString).collect(Collectors.joining(", "))
        + ")";
  }
}