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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.attribute;

import proguard.classfile.*;
import proguard.classfile.attribute.visitor.*;

/**
 * This {@link Attribute} represents a method parameters attribute.
 *
 * @author Eric Lafortune
 */
public class MethodParametersAttribute extends Attribute {
  public int u1parametersCount;
  public ParameterInfo[] parameters;

  /** Creates an uninitialized MethodParametersAttribute. */
  public MethodParametersAttribute() {}

  /** Creates an initialized MethodParametersAttribute. */
  public MethodParametersAttribute(
      int u2attributeNameIndex, int u1parametersCount, ParameterInfo[] parameters) {
    super(u2attributeNameIndex);

    this.u1parametersCount = u1parametersCount;
    this.parameters = parameters;
  }

  // Implementations for Attribute.

  public void accept(Clazz clazz, Method method, AttributeVisitor attributeVisitor) {
    attributeVisitor.visitMethodParametersAttribute(clazz, method, this);
  }

  /** Applies the given visitor to all parameters. */
  public void parametersAccept(
      Clazz clazz, Method method, ParameterInfoVisitor parameterInfoVisitor) {
    // Loop over all parameters.
    for (int index = 0; index < u1parametersCount; index++) {
      // We don't need double dispatching here, since there is only one
      // type of ParameterInfo.
      parameterInfoVisitor.visitParameterInfo(clazz, method, index, parameters[index]);
    }
  }
}