| /* |
| * Copyright 2000-2014 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.util; |
| |
| import com.intellij.concurrency.AsyncFuture; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| public class InstanceofQuery<T> implements Query<T> { |
| private final Class<? extends T>[] myClasses; |
| private final Query<?> myDelegate; |
| |
| public InstanceofQuery(Query<?> delegate, Class<? extends T>... aClasses) { |
| myClasses = aClasses; |
| myDelegate = delegate; |
| } |
| |
| @Override |
| @NotNull |
| public Collection<T> findAll() { |
| ArrayList<T> result = new ArrayList<T>(); |
| Collection all = myDelegate.findAll(); |
| for (Object o : all) { |
| for (Class aClass : myClasses) { |
| if (aClass.isInstance(o)) { |
| result.add((T)o); |
| } |
| } |
| } |
| return result; |
| } |
| |
| @Override |
| public T findFirst() { |
| final CommonProcessors.FindFirstProcessor<T> processor = new CommonProcessors.FindFirstProcessor<T>(); |
| forEach(processor); |
| return processor.getFoundValue(); |
| } |
| |
| @Override |
| public boolean forEach(@NotNull final Processor<T> consumer) { |
| return myDelegate.forEach(new MyProcessor(consumer)); |
| } |
| |
| @NotNull |
| @Override |
| public AsyncFuture<Boolean> forEachAsync(@NotNull Processor<T> consumer) { |
| return myDelegate.forEachAsync(new MyProcessor(consumer)); |
| } |
| |
| @NotNull |
| @Override |
| public T[] toArray(@NotNull T[] a) { |
| final Collection<T> all = findAll(); |
| return all.toArray(a); |
| } |
| |
| @Override |
| public Iterator<T> iterator() { |
| return new UnmodifiableIterator<T>(findAll().iterator()); |
| } |
| |
| private class MyProcessor<T> implements Processor<T> { |
| private final Processor<T> myConsumer; |
| |
| public MyProcessor(Processor<T> consumer) { |
| myConsumer = consumer; |
| } |
| |
| @Override |
| public boolean process(T o) { |
| for (Class aClass : myClasses) { |
| if (aClass.isInstance(o)) { |
| return myConsumer.process(((T)o)); |
| } |
| } |
| return true; |
| } |
| } |
| } |