/*
* Copyright 2000-2004 The Apache Software Foundation
*
* Licensed 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.bcel5_2_0.generic;
/**
* DCONST - Push 0.0 or 1.0, other values cause an exception
*
* <PRE>Stack: ... -> ..., </PRE>
*
* @version $Id: DCONST.java 386056 2006-03-15 11:31:56Z tcurdt $
* @author <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
*/
public class DCONST extends Instruction implements ConstantPushInstruction, TypedInstruction {
private double value;
/**
* Empty constructor needed for the Class.newInstance() statement in
* Instruction.readInstruction(). Not to be used otherwise.
*/
DCONST() {
}
public DCONST(double f) {
super(org.apache.bcel5_2_0.Constants.DCONST_0, (short) 1);
if (f == 0.0) {
opcode = org.apache.bcel5_2_0.Constants.DCONST_0;
} else if (f == 1.0) {
opcode = org.apache.bcel5_2_0.Constants.DCONST_1;
} else {
throw new ClassGenException("DCONST can be used only for 0.0 and 1.0: " + f);
}
value = f;
}
public Number getValue() {
return new Double(value);
}
/** @return Type.DOUBLE
*/
public Type getType( ConstantPoolGen cp ) {
return Type.DOUBLE;
}
/**
* Call corresponding visitor method(s). The order is:
* Call visitor methods of implemented interfaces first, then
* call methods according to the class hierarchy in descending order,
* i.e., the most specific visitXXX() call comes last.
*
* @param v Visitor object
*/
public void accept( Visitor v ) {
v.visitPushInstruction(this);
v.visitStackProducer(this);
v.visitTypedInstruction(this);
v.visitConstantPushInstruction(this);
v.visitDCONST(this);
}
}