// 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:
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//    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.
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//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
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package scala.tools.asm.tree;

import java.util.Map;
import scala.tools.asm.MethodVisitor;
import scala.tools.asm.Opcodes;

/**
 * A node that represents a method instruction. A method instruction is an instruction that invokes
 * a method.
 *
 * @author Eric Bruneton
 */
public class MethodInsnNode extends AbstractInsnNode {

  /**
   * The internal name of the method's owner class (see {@link
   * scala.tools.asm.Type#getInternalName()}).
   *
   * <p>For methods of arrays, e.g., {@code clone()}, the array type descriptor.
   */
  public String owner;

  /** The method's name. */
  public String name;

  /** The method's descriptor (see {@link scala.tools.asm.Type}). */
  public String desc;

  /** Whether the method's owner class if an interface. */
  public boolean itf;

  /**
   * Constructs a new {@link MethodInsnNode}.
   *
   * @param opcode the opcode of the type instruction to be constructed. This opcode must be
   *     INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE.
   * @param owner the internal name of the method's owner class (see {@link
   *     scala.tools.asm.Type#getInternalName()}).
   * @param name the method's name.
   * @param descriptor the method's descriptor (see {@link scala.tools.asm.Type}).
   */
  public MethodInsnNode(
      final int opcode, final String owner, final String name, final String descriptor) {
    this(opcode, owner, name, descriptor, opcode == Opcodes.INVOKEINTERFACE);
  }

  /**
   * Constructs a new {@link MethodInsnNode}.
   *
   * @param opcode the opcode of the type instruction to be constructed. This opcode must be
   *     INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE.
   * @param owner the internal name of the method's owner class (see {@link
   *     scala.tools.asm.Type#getInternalName()}).
   * @param name the method's name.
   * @param descriptor the method's descriptor (see {@link scala.tools.asm.Type}).
   * @param isInterface if the method's owner class is an interface.
   */
  public MethodInsnNode(
      final int opcode,
      final String owner,
      final String name,
      final String descriptor,
      final boolean isInterface) {
    super(opcode);
    this.owner = owner;
    this.name = name;
    this.desc = descriptor;
    this.itf = isInterface;
  }

  /**
   * Sets the opcode of this instruction.
   *
   * @param opcode the new instruction opcode. This opcode must be INVOKEVIRTUAL, INVOKESPECIAL,
   *     INVOKESTATIC or INVOKEINTERFACE.
   */
  public void setOpcode(final int opcode) {
    this.opcode = opcode;
  }

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

  @Override
  public void accept(final MethodVisitor methodVisitor) {
    methodVisitor.visitMethodInsn(opcode, owner, name, desc, itf);
    acceptAnnotations(methodVisitor);
  }

  @Override
  public AbstractInsnNode clone(final Map<LabelNode, LabelNode> clonedLabels) {
    return new MethodInsnNode(opcode, owner, name, desc, itf).cloneAnnotations(this);
  }
}
