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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
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 * published by the Free Software Foundation.  Oracle designates this
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/*
 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, the following notice accompanied the original version of this
 * file:
 *
 * 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
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package jdk.internal.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 names, the key is the owner and name of the field (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.
      *     
      */
    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.
      */
    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 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);
    }
}