platform/platform-impl/src/com/intellij/util/DefaultCachedValuesFactory.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.util;
  17
  18 import com.intellij.psi.util.ParameterizedCachedValueProvider;
  19 import com.intellij.openapi.project.Project;
  20 import com.intellij.psi.util.CachedValueProvider;
  21 import com.intellij.psi.util.ParameterizedCachedValue;
  22 import com.intellij.psi.util.*;
  23 import org.jetbrains.annotations.NotNull;
  24
  25 /**
  26  * @author Dmitry Avdeev
  27  */
  28 public class DefaultCachedValuesFactory implements CachedValuesFactory {
  29   private final Project myProject;
  30
  31   public DefaultCachedValuesFactory(Project project) {
  32     myProject = project;
  33   }
  34
  35   public <T> CachedValue<T> createCachedValue(@NotNull CachedValueProvider<T> provider, boolean trackValue) {
  36     return trackValue ? new CachedValueImpl<T>(provider) {
  37       @Override
  38       protected Object[] getDependencies(CachedValueProvider.Result<T> result) {
  39         return getDependenciesPlusValue(result);
  40       }
  41
  42       @Override
  43       public boolean isFromMyProject(Project project) {
  44         return myProject == project;
  45       }
  46     } : new CachedValueImpl<T>(provider) {
  47
  48       @Override
  49       public boolean isFromMyProject(Project project) {
  50         return myProject == project;
  51       }
  52     };
  53   }
  54
  55   public <T, P> ParameterizedCachedValue<T, P> createParameterizedCachedValue(@NotNull ParameterizedCachedValueProvider<T, P> provider,
  56                                                                               boolean trackValue) {
  57     return trackValue ? new ParameterizedCachedValueImpl<T, P>(provider) {
  58       @Override
  59       public boolean isFromMyProject(Project project) {
  60         return myProject == project;
  61       }
  62
  63       @Override
  64       protected Object[] getDependencies(CachedValueProvider.Result<T> tResult) {
  65         return getDependenciesPlusValue(tResult);
  66       }
  67     } : new ParameterizedCachedValueImpl<T, P>(provider) {
  68       @Override
  69       public boolean isFromMyProject(Project project) {
  70         return myProject == project;
  71       }
  72     };
  73   }
  74 }