import com.sun.org.apache.bcel.internal.Const;

import com.sun.org.apache.bcel.internal.ExceptionConst;

 * @version $Id: ReturnInstruction.java 1747278 2016-06-07 17:28:43Z britter $

public abstract class ReturnInstruction extends Instruction implements ExceptionThrower,

        TypedInstruction, StackConsumer {

    /**

     * Empty constructor needed for the Class.newInstance() statement in

     * Instruction.readInstruction(). Not to be used otherwise.

     */

    ReturnInstruction() {

    }

    /**

     * @param opcode of instruction

     */

    protected ReturnInstruction(final short opcode) {

        super(opcode, (short) 1);

    }

    public Type getType() {

        final short _opcode = super.getOpcode();

        switch (_opcode) {

            case Const.IRETURN:

                return Type.INT;

            case Const.LRETURN:

                return Type.LONG;

            case Const.FRETURN:

                return Type.FLOAT;

            case Const.DRETURN:

                return Type.DOUBLE;

            case Const.ARETURN:

                return Type.OBJECT;

            case Const.RETURN:

                return Type.VOID;

            default: // Never reached

                throw new ClassGenException("Unknown type " + _opcode);

        }

    @Override

    public Class<?>[] getExceptions() {

        return new Class[] {

            ExceptionConst.ILLEGAL_MONITOR_STATE

        };

    }

    /** @return type associated with the instruction

     */

    @Override

    public Type getType( final ConstantPoolGen cp ) {

        return getType();

    }