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 /* Soot - a J*va Optimization Framework
  * Copyright (C) 2005 Antoine Mine
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

Implementation of the paper "A Combined Pointer and Purity Analysis for Java Programs" by Alexandru Salcianu and Martin Rinard, within the Soot Optimization Framework. by Antoine Mine, 2005/01/24
package soot.jimple.toolkits.annotation.purity;
import java.util.*;

A node created dynamically and attached to a statement Stmt. Can be either an inside or a load node. Two such nodes are equal if and only if they have the same inside / load flag and are attached to the same statement (we use Stmt.equal here).
public class PurityStmtNode implements PurityNode
{
    
Statement that created the node
    private Stmt id;

    
true if an inside node, false if an load node
    private boolean inside;

    
gives a unique id, for pretty-printing purposes
    private static final Map<StmtIntegernMap = new HashMap<StmtInteger>();
    private static int n = 0;
    PurityStmtNode(Stmt idboolean inside)
    { 
	this. = idthis. = inside;
	if (!.containsKey(id)) { .put(id,new Integer()); ++; }
    }
    public String toString() 
    { 
	if (return "I_"+.get(); else return "L_"+.get();
	//if (inside) return "I_"+id; else return "L_"+id; 
    }
    public int hashCode() 
    { return .hashCode(); }
    
    public boolean equals(Object o)
    {
	if (o instanceof PurityStmtNode) {
	    PurityStmtNode oo = (PurityStmtNode)o;
	    return .equals(oo.id) && oo.inside==;
	}
	else return false;
    }
    public boolean isInside() 
    { return ; }
    public boolean isLoad()
    { return !; }
    public boolean isParam() 
    { return false; }
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