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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

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// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holders nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.

package aj.org.objectweb.asm.commons;

import java.util.Collections;
import java.util.Map;

/**
 * A {@link Remapper} using a {@link Map} to define its mapping.
 *
 * @author Eugene Kuleshov
 */
public class SimpleRemapper extends Remapper {

  private final Map mapping;

  /**
   * Constructs a new {@link SimpleRemapper} with the given mapping.
   *
   * @param mapping a map specifying a remapping as follows:
   *     
   *       for method names, the key is the owner, name and descriptor of the method (in the
   *           form <owner>.<name><descriptor>), and the value is the new method
   *           name.
   *       
for invokedynamic method names, the key is the name and descriptor of the method (in
   *           the form .<name><descriptor>), and the value is the new method name.
   *       
for field and attribute names, the key is the owner and name of the field or
   *           attribute (in the form <owner>.<name>), and the value is the new field
   *           name.
   *       
for internal names, the key is the old internal name, and the value is the new
   *           internal name (see {@link aj.org.objectweb.asm.Type#getInternalName()}).
   *     
   */
  public SimpleRemapper(final Map mapping) {
    this.mapping = mapping;
  }

  /**
   * Constructs a new {@link SimpleRemapper} with the given mapping.
   *
   * @param oldName the key corresponding to a method, field or internal name (see {@link
   *     #SimpleRemapper(Map)} for the format of these keys).
   * @param newName the new method, field or internal name (see {@link
   *     aj.org.objectweb.asm.Type#getInternalName()}).
   */
  public SimpleRemapper(final String oldName, final String newName) {
    this.mapping = Collections.singletonMap(oldName, newName);
  }

  @Override
  public String mapMethodName(final String owner, final String name, final String descriptor) {
    String remappedName = map(owner + '.' + name + descriptor);
    return remappedName == null ? name : remappedName;
  }

  @Override
  public String mapInvokeDynamicMethodName(final String name, final String descriptor) {
    String remappedName = map('.' + name + descriptor);
    return remappedName == null ? name : remappedName;
  }

  @Override
  public String mapAnnotationAttributeName(final String descriptor, final String name) {
    String remappedName = map(descriptor + '.' + name);
    return remappedName == null ? name : remappedName;
  }

  @Override
  public String mapFieldName(final String owner, final String name, final String descriptor) {
    String remappedName = map(owner + '.' + name);
    return remappedName == null ? name : remappedName;
  }

  @Override
  public String map(final String key) {
    return mapping.get(key);
  }
}