| /* |
| * Copyright 2000-2012 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.openapi.compiler; |
| |
| import com.intellij.openapi.util.Key; |
| import com.intellij.openapi.util.UserDataHolderBase; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.*; |
| |
| public class ExportableUserDataHolderBase extends UserDataHolderBase implements ExportableUserDataHolder{ |
| private final Set<Key> myKeys = Collections.synchronizedSet(new HashSet<Key>()); |
| |
| @NotNull |
| public final Map<Key, Object> exportUserData() { |
| final Map<Key, Object> result = new HashMap<Key, Object>(); |
| synchronized (myKeys) { |
| for (Key<?> k : myKeys) { |
| final Object data = getUserData(k); |
| if (data != null) { |
| result.put(k, data); |
| } |
| } |
| } |
| return result; |
| } |
| |
| @Override |
| public final <T> void putUserData(@NotNull Key<T> key, @Nullable T value) { |
| if (value != null) { |
| myKeys.add(key); |
| } |
| else { |
| myKeys.remove(key); |
| } |
| super.putUserData(key, value); |
| } |
| |
| } |