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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.bcel.generic;
import org.apache.bcel.Const;
/**
* Super class for the x2y family of instructions.
*
* @version $Id$
*/
public abstract class ConversionInstruction extends Instruction implements TypedInstruction,
StackProducer, StackConsumer {
/**
* Empty constructor needed for the Class.newInstance() statement in
* Instruction.readInstruction(). Not to be used otherwise.
*/
ConversionInstruction() {
}
/**
* @param opcode opcode of instruction
*/
protected ConversionInstruction(final short opcode) {
super(opcode, (short) 1);
}
/** @return type associated with the instruction
*/
@Override
public Type getType( final ConstantPoolGen cp ) {
final short _opcode = super.getOpcode();
switch (_opcode) {
case Const.D2I:
case Const.F2I:
case Const.L2I:
return Type.INT;
case Const.D2F:
case Const.I2F:
case Const.L2F:
return Type.FLOAT;
case Const.D2L:
case Const.F2L:
case Const.I2L:
return Type.LONG;
case Const.F2D:
case Const.I2D:
case Const.L2D:
return Type.DOUBLE;
case Const.I2B:
return Type.BYTE;
case Const.I2C:
return Type.CHAR;
case Const.I2S:
return Type.SHORT;
default: // Never reached
throw new ClassGenException("Unknown type " + _opcode);
}
}
}
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