/*
*
*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package components;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import util.DataFormatException;
import jcc.Const;
// This class represents a CONSTANT_NameAndType
public
class NameAndTypeConstant extends ConstantObject {
// Filled in by Clas.resolveConstants()
public UnicodeConstant name;
public UnicodeConstant type;
// Read in from classfile
int nameIndex;
int typeIndex;
// The unique ID for this name and type (from Std2ID)
public int ID = 0;
private NameAndTypeConstant( int t, int ni, int ti ){
tag = t;
nameIndex = ni;
typeIndex = ti;
nSlots = 1;
}
public NameAndTypeConstant( UnicodeConstant name, UnicodeConstant type ){
tag = Const.CONSTANT_NAMEANDTYPE;
this.name = name;
this.type = type;
nSlots = 1;
resolved = true;
}
public static ConstantObject read( int t, DataInput i ) throws IOException{
return new NameAndTypeConstant( t, i.readUnsignedShort(), i.readUnsignedShort() );
}
public void resolve( ConstantObject table[] ){
if ( resolved ) return;
name = (UnicodeConstant)table[nameIndex];
type = (UnicodeConstant)table[typeIndex];
resolved = true;
}
public void externalize( ConstantPool p ){
name = (UnicodeConstant)p.add( name );
type = (UnicodeConstant)p.add( type );
}
public void write( DataOutput o ) throws IOException{
o.writeByte( tag );
if ( resolved ){
o.writeShort( name.index );
o.writeShort( type.index );
} else {
throw new DataFormatException("unresolved NameAndTypeConstant");
//o.writeShort( nameIndex );
//o.writeShort( typeIndex );
}
}
public String toString(){
if ( resolved ){
return "NameAndType: "+name.string+" : "+type.string;
}else{
return "NameAndType[ "+nameIndex+" : "+typeIndex+" ]";
}
}
public void incReference() {
references++;
name.incReference();
type.incReference();
}
public void decReference() {
references--;
name.decReference();
type.decReference();
}
public int hashCode() {
return tag + name.string.hashCode() + type.string.hashCode();
}
public boolean equals(Object o) {
if (o instanceof NameAndTypeConstant) {
NameAndTypeConstant n = (NameAndTypeConstant) o;
return name.string.equals(n.name.string) &&
type.string.equals(n.type.string);
} else {
return false;
}
}
public boolean isResolved(){ return true; }
}
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