/*
*
*
* 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;
// Represents a CONSTANT_String. These constants are somewhat
// complicated in that we must fake string bodies for them.
public
class StringConstant extends ConstantObject
{
// Filled in by Clas.resolveConstants()
public UnicodeConstant str;
public int strIndex; // unresolved index of UnicodeConstant
// used by core-image writer.
public int unicodeIndex = -1;
public int unicodeOffset= 0;
public boolean dataWritten = false;
public boolean handleWritten = false;
private StringConstant( int t, int i ){
tag = t;
strIndex = i;
nSlots = 1;
}
public static ConstantObject read( int t, DataInput i ) throws IOException{
return new StringConstant( t, i.readUnsignedShort() );
}
public void resolve( ConstantObject table[] ){
if (resolved) return;
str = (UnicodeConstant)table[strIndex];
resolved = true;
}
public void externalize( ConstantPool p ){
str = (UnicodeConstant)p.add( str );
}
public void write( DataOutput o ) throws IOException{
o.writeByte( tag );
if ( resolved ){
o.writeShort( str.index );
} else {
throw new DataFormatException("unresolved StringConstant");
//o.writeShort( strIndex );
}
}
public String toString(){
return "String: "+ ((resolved)?str.string:("[ "+strIndex+" ]"));
}
public void incReference() {
references++;
str.incReference();
}
public void decReference() {
references--;
str.decReference();
}
public int hashCode() {
return tag + str.string.hashCode();
}
public boolean equals(Object o) {
if (o instanceof StringConstant) {
StringConstant s = (StringConstant) o;
return str.string.equals(s.str.string);
} else {
return false;
}
}
public boolean isResolved(){ return true; }
}
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