/*
* xtc - The eXTensible Compiler
* Copyright (C) 2005-2006 Robert Grimm
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
package xtc.tree;
/**
* A source identity marker.
*
* @author Robert Grimm
* @version $Revision: 1.4 $
*/
public class SourceIdentity extends Annotation {
/** The text of the source identity marker. */
public String ident;
/**
* Create a new source identity marker.
*
* @param ident The actual identity.
* @param node The node.
*/
public SourceIdentity(String ident, Node node) {
super(node);
this.ident = ident;
}
public boolean hasTraversal() {
return true;
}
public int size() {
return 2;
}
public Object get(int index) {
switch (index) {
case 0:
return ident;
case 1:
return node;
default:
throw new IndexOutOfBoundsException("Index: " + index + ", Size: 2");
}
}
public Object set(int index, Object value) {
Object old;
switch (index) {
case 0:
old = ident;
ident = (String)value;
return old;
case 1:
old = node;
node = (Node)value;
return old;
default:
throw new IndexOutOfBoundsException("Index: " + index + ", Size: 2");
}
}
public int hashCode() {
return ident.hashCode();
}
public boolean equals(Object o) {
if (this == o) return true;
if (! (o instanceof SourceIdentity)) return false;
SourceIdentity other = (SourceIdentity)o;
if (! ident.equals(other.ident)) return false;
if (null == node) return (null == other.node);
return node.equals(other.node);
}
}