| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.codeInsight.daemon.impl; |
| |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.util.Pair; |
| import com.intellij.openapi.util.UserDataHolder; |
| import com.intellij.util.pico.ConstructorInjectionComponentAdapter; |
| import gnu.trove.THashMap; |
| import org.jetbrains.annotations.NotNull; |
| import org.picocontainer.PicoContainer; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * User: cdr |
| */ |
| abstract class ThreadLocalAnnotatorMap<T, KeyT extends UserDataHolder> { |
| private volatile int version; |
| @NotNull |
| public abstract Collection<T> initialValue(@NotNull KeyT key); |
| |
| // pair(version, map) |
| private final ThreadLocal<Pair<Integer, Map<KeyT,List<T>>>> CACHE = new ThreadLocal<Pair<Integer, Map<KeyT,List<T>>>>(){ |
| @Override |
| protected Pair<Integer, Map<KeyT,List<T>>> initialValue() { |
| return Pair.<Integer, Map<KeyT,List<T>>>create(version, new THashMap<KeyT, List<T>>()); |
| } |
| }; |
| |
| @SuppressWarnings("unchecked") |
| @NotNull |
| private List<T> cloneTemplates(@NotNull Collection<T> templates) { |
| List<T> result = new ArrayList<T>(templates.size()); |
| PicoContainer container = ApplicationManager.getApplication().getPicoContainer(); |
| for (T template : templates) { |
| Class<? extends T> aClass = (Class<? extends T>)template.getClass(); |
| T clone = (T)new ConstructorInjectionComponentAdapter(aClass.getName(), aClass).getComponentInstance(container); |
| result.add(clone); |
| } |
| return result; |
| } |
| |
| @NotNull |
| public List<T> get(@NotNull KeyT key) { |
| Pair<Integer, Map<KeyT, List<T>>> pair = CACHE.get(); |
| Integer mapVersion = pair.getFirst(); |
| if (version != mapVersion) { |
| CACHE.remove(); |
| pair = CACHE.get(); |
| } |
| Map<KeyT, List<T>> map = pair.getSecond(); |
| List<T> cached = map.get(key); |
| if (cached == null) { |
| Collection<T> templates = initialValue(key); |
| cached = cloneTemplates(templates); |
| map.put(key, cached); |
| } |
| return cached; |
| } |
| |
| public void clear() { |
| version++; //we don't care about atomicity here |
| } |
| } |