java/debugger/impl/src/com/intellij/debugger/engine/evaluation/expression/PostfixOperationEvaluator.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.debugger.engine.evaluation.expression;
  17
  18 import com.intellij.debugger.engine.evaluation.EvaluateException;
  19 import com.intellij.debugger.engine.evaluation.EvaluationContextImpl;
  20
  21 public class PostfixOperationEvaluator implements Evaluator{
  22   private final Evaluator myOperandEvaluator;
  23
  24   private final Evaluator myIncrementImpl;
  25
  26   private Modifier myModifier;
  27
  28   public PostfixOperationEvaluator(Evaluator operandEvaluator, Evaluator incrementImpl) {
  29     myOperandEvaluator = operandEvaluator;
  30     myIncrementImpl = incrementImpl;
  31   }
  32
  33   public Object evaluate(EvaluationContextImpl context) throws EvaluateException {
  34     final Object value = myOperandEvaluator.evaluate(context);
  35     myModifier = myOperandEvaluator.getModifier();
  36     Object operationResult = myIncrementImpl.evaluate(context);
  37     AssignmentEvaluator.assign(myModifier, operationResult, context);
  38     return value;
  39   }
  40
  41   public Modifier getModifier() {
  42     return myModifier;
  43   }
  44 }