// 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
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package org.objectweb.asm.tree;

import java.util.List;
import java.util.Map;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

/**
 * A node that represents a LOOKUPSWITCH instruction.
 *
 * @author Eric Bruneton
 */
public class LookupSwitchInsnNode extends AbstractInsnNode {

	/** Beginning of the default handler block. */
	public LabelNode dflt;

	/** The values of the keys. */
	public List<Integer> keys;

	/** Beginnings of the handler blocks. */
	public List<LabelNode> labels;

	/**
	 * Constructs a new {@link LookupSwitchInsnNode}.
	 *
	 * @param dflt
	 *          beginning of the default handler block.
	 * @param keys
	 *          the values of the keys.
	 * @param labels
	 *          beginnings of the handler blocks. {@code labels[i]} is the beginning of the handler block for the {@code keys[i]} key.
	 */
	public LookupSwitchInsnNode(final LabelNode dflt, final int[] keys, final LabelNode[] labels) {
		super(Opcodes.LOOKUPSWITCH);
		this.dflt = dflt;
		this.keys = Util.asArrayList(keys);
		this.labels = Util.asArrayList(labels);
	}

	@Override
	public int getType() {
		return LOOKUPSWITCH_INSN;
	}

	@Override
	public void accept(final MethodVisitor methodVisitor) {
		int[] keysArray = new int[this.keys.size()];
		for (int i = 0, n = keysArray.length; i < n; ++i) {
			keysArray[i] = this.keys.get(i).intValue();
		}
		Label[] labelsArray = new Label[this.labels.size()];
		for (int i = 0, n = labelsArray.length; i < n; ++i) {
			labelsArray[i] = this.labels.get(i).getLabel();
		}
		methodVisitor.visitLookupSwitchInsn(dflt.getLabel(), keysArray, labelsArray);
		acceptAnnotations(methodVisitor);
	}

	@Override
	public AbstractInsnNode clone(final Map<LabelNode, LabelNode> clonedLabels) {
		LookupSwitchInsnNode clone = new LookupSwitchInsnNode(clone(dflt, clonedLabels), null, clone(labels, clonedLabels));
		clone.keys.addAll(keys);
		return clone.cloneAnnotations(this);
	}
}
