java/java-impl/src/com/intellij/psi/controlFlow/LocalsOrMyInstanceFieldsControlFlowPolicy.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
  17 /*
  18  * Created by IntelliJ IDEA.
  19  * User: cdr
  20  * Date: Aug 6, 2002
  21  * Time: 6:16:17 PM
  22  * To change template for new class use
  23  * Code Style | Class Templates options (Tools | IDE Options).
  24  */
  25 package com.intellij.psi.controlFlow;
  26
  27 import com.intellij.psi.*;
  28
  29 public class LocalsOrMyInstanceFieldsControlFlowPolicy implements ControlFlowPolicy {
  30   private static final LocalsOrMyInstanceFieldsControlFlowPolicy INSTANCE = new LocalsOrMyInstanceFieldsControlFlowPolicy();
  31
  32   private LocalsOrMyInstanceFieldsControlFlowPolicy() {
  33   }
  34
  35   public PsiVariable getUsedVariable(PsiReferenceExpression refExpr) {
  36     PsiExpression qualifier = refExpr.getQualifierExpression();
  37     if (qualifier == null || qualifier instanceof PsiThisExpression) {
  38       PsiElement resolved = refExpr.resolve();
  39       if (!(resolved instanceof PsiVariable)) return null;
  40       return (PsiVariable)resolved;
  41     }
  42
  43     return null;
  44   }
  45
  46   public boolean isParameterAccepted(PsiParameter psiParameter) {
  47     return true;
  48   }
  49
  50   public boolean isLocalVariableAccepted(PsiLocalVariable psiVariable) {
  51     return true;
  52   }
  53
  54   public static LocalsOrMyInstanceFieldsControlFlowPolicy getInstance() {
  55     return INSTANCE;
  56   }
  57 }