/*
* Copyright (c) 2002-2007, CWI and INRIA
*
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the University of California, Berkeley 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 REGENTS 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 REGENTS AND 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 aterm.pure;
import java.util.List;
import jjtraveler.VisitFailure;
import shared.HashFunctions;
import shared.SharedObject;
import aterm.AFun;
import aterm.ATerm;
import aterm.ATermAppl;
import aterm.ATermBlob;
import aterm.ATermList;
import aterm.ATermPlaceholder;
import aterm.Visitable;
import aterm.Visitor;
public class ATermBlobImpl extends ATermImpl implements ATermBlob {
private byte[] data;
/**
* @depricated Use the new constructor instead.
* @param factory
*/
protected ATermBlobImpl(PureFactory factory) {
super(factory);
}
protected ATermBlobImpl(PureFactory factory, ATermList annos, byte[] data) {
super(factory, annos);
this.data = data;
setHashCode(HashFunctions.doobs(new Object[]{annos, data}));
}
public int getType() {
return ATerm.BLOB;
}
/**
* @depricated Use the new constructor instead.
* @param hashCode
* @param annos
* @param data
*/
protected void init(int hashCode, ATermList annos, byte[] data) {
super.init(hashCode, annos);
this.data = data;
}
public SharedObject duplicate() {
return this;
}
public boolean equivalent(SharedObject obj){
if(obj instanceof ATermBlob){
ATermBlob peer = (ATermBlob) obj;
if(peer.getType() != getType()) return false;
return (peer.getBlobData() == data && peer.getAnnotations().equals(getAnnotations()));
}
return false;
}
protected boolean match(ATerm pattern, List<Object> list) {
if (equals(pattern)) {
return true;
}
if (pattern.getType() == ATerm.PLACEHOLDER) {
ATerm type = ((ATermPlaceholder) pattern).getPlaceholder();
if (type.getType() == ATerm.APPL) {
ATermAppl appl = (ATermAppl) type;
AFun afun = appl.getAFun();
if (afun.getName().equals("blob")
&& afun.getArity() == 0
&& !afun.isQuoted()) {
list.add(data);
return true;
}
}
}
return super.match(pattern, list);
}
public byte[] getBlobData() {
return data;
}
public int getBlobSize() {
return data.length;
}
public ATerm setAnnotations(ATermList annos) {
return getPureFactory().makeBlob(data, annos);
}
public Visitable accept(Visitor v) throws VisitFailure {
return v.visitBlob(this);
}
}