Scala example source code file (VarInsnNode.java)

This example Scala source code file (VarInsnNode.java) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

abstractinsnnode, asm, labelnode, map, methodvisitor, override, var_insn, varinsnnode

The VarInsnNode.java Scala example source code

/***
 * 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
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */
package scala.tools.asm.tree;

import java.util.Map;

import scala.tools.asm.MethodVisitor;

/**
 * A node that represents a local variable instruction. A local variable
 * instruction is an instruction that loads or stores the value of a local
 * variable.
 *
 * @author Eric Bruneton
 */
public class VarInsnNode extends AbstractInsnNode {

    /**
     * The operand of this instruction. This operand is the index of a local
     * variable.
     */
    public int var;

    /**
     * Constructs a new {@link VarInsnNode}.
     *
     * @param opcode
     *            the opcode of the local variable instruction to be
     *            constructed. This opcode must be ILOAD, LLOAD, FLOAD, DLOAD,
     *            ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE or RET.
     * @param var
     *            the operand of the instruction to be constructed. This operand
     *            is the index of a local variable.
     */
    public VarInsnNode(final int opcode, final int var) {
        super(opcode);
        this.var = var;
    }

    /**
     * Sets the opcode of this instruction.
     *
     * @param opcode
     *            the new instruction opcode. This opcode must be ILOAD, LLOAD,
     *            FLOAD, DLOAD, ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE or
     *            RET.
     */
    public void setOpcode(final int opcode) {
        this.opcode = opcode;
    }

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

    @Override
    public void accept(final MethodVisitor mv) {
        mv.visitVarInsn(opcode, var);
    }

    @Override
    public AbstractInsnNode clone(final Map<LabelNode, LabelNode> labels) {
        return new VarInsnNode(opcode, var);
    }
}