PrePostFixOperator.java :  » Development » jode » jode » expr » Java Open Source

/* PrePostFixOperator Copyright (C) 1998-2002 Jochen Hoenicke.
 *
 * This program 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, or (at your option)
 * any later version.
 *
 * 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 Lesser General Public License
 * along with this program; see the file COPYING.LESSER.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id: PrePostFixOperator.java,v 3.10.2.2 2002/05/28 17:34:06 hoenicke Exp $
 */

package jode.expr;
import jode.type.Type;
import jode.decompiler.TabbedPrintWriter;

/**
 * A PrePostFixOperator has one subexpression, namely the StoreInstruction.
 */
public class PrePostFixOperator extends Operator {
    boolean postfix;

    public PrePostFixOperator(Type type, int operatorIndex,
            LValueExpression lvalue, boolean postfix) {
        super(type);
        this.postfix = postfix;
  setOperatorIndex(operatorIndex);
  initOperands(1);
  setSubExpressions(0, (Operator) lvalue);
    }
    
    public int getPriority() {
        return postfix ? 800 : 700;
    }

    public void updateSubTypes() {
  if (!isVoid())
      subExpressions[0].setType(type);
    }

    public void updateType() {
  if (!isVoid())
      updateParentType(subExpressions[0].getType());
    }

    public void dumpExpression(TabbedPrintWriter writer)
    throws java.io.IOException {
  if (!postfix)
      writer.print(getOperatorString());
  writer.startOp(writer.NO_PAREN, 2);
  subExpressions[0].dumpExpression(writer);
  writer.endOp();
        if (postfix)
      writer.print(getOperatorString());
    }
}