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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 java.io.DataOutputStream;
import java.io.IOException;
import org.apache.bcel.ExceptionConst;
import org.apache.bcel.util.ByteSequence;
/**
* NEWARRAY - Create new array of basic type (int, short, ...)
* <PRE>Stack: ..., count -> ..., arrayref</PRE>
* type must be one of T_INT, T_SHORT, ...
*
* @version $Id$
*/
public class NEWARRAY extends Instruction implements AllocationInstruction, ExceptionThrower,
StackProducer {
private byte type;
/**
* Empty constructor needed for Instruction.readInstruction.
* Not to be used otherwise.
*/
NEWARRAY() {
}
public NEWARRAY(final byte type) {
super(org.apache.bcel.Const.NEWARRAY, (short) 2);
this.type = type;
}
public NEWARRAY(final BasicType type) {
this(type.getType());
}
/**
* Dump instruction as byte code to stream out.
* @param out Output stream
*/
@Override
public void dump( final DataOutputStream out ) throws IOException {
out.writeByte(super.getOpcode());
out.writeByte(type);
}
/**
* @return numeric code for basic element type
*/
public final byte getTypecode() {
return type;
}
/**
* @return type of constructed array
*/
public final Type getType() {
return new ArrayType(BasicType.getType(type), 1);
}
/**
* @return mnemonic for instruction
*/
@Override
public String toString( final boolean verbose ) {
return super.toString(verbose) + " " + org.apache.bcel.Const.getTypeName(type);
}
/**
* Read needed data (e.g. index) from file.
*/
@Override
protected void initFromFile( final ByteSequence bytes, final boolean wide ) throws IOException {
type = bytes.readByte();
super.setLength(2);
}
@Override
public Class<?>[] getExceptions() {
return new Class[] {
ExceptionConst.NEGATIVE_ARRAY_SIZE_EXCEPTION
};
}
/**
* 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
*/
@Override
public void accept( final Visitor v ) {
v.visitAllocationInstruction(this);
v.visitExceptionThrower(this);
v.visitStackProducer(this);
v.visitNEWARRAY(this);
}
}
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