| /* |
| * 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.psi; |
| |
| import com.intellij.openapi.util.Computable; |
| import com.intellij.openapi.util.Key; |
| import com.intellij.openapi.util.KeyedExtensionCollector; |
| import com.intellij.util.containers.ContainerUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.List; |
| |
| /** |
| * @author peter |
| */ |
| public class WeighingService { |
| private static final KeyedExtensionCollector<Weigher,Key> COLLECTOR = new KeyedExtensionCollector<Weigher, Key>("com.intellij.weigher") { |
| @NotNull |
| @Override |
| protected String keyToString(@NotNull final Key key) { |
| return key.toString(); |
| } |
| }; |
| |
| private WeighingService() { |
| } |
| |
| @NotNull |
| public static <T,Loc> WeighingComparable<T,Loc> weigh(final Key<? extends Weigher<T,Loc>> key, final T element, @Nullable final Loc location) { |
| return weigh(key, new Computable.PredefinedValueComputable<T>(element), location); |
| } |
| |
| @NotNull |
| public static <T,Loc> WeighingComparable<T,Loc> weigh(final Key<? extends Weigher<T,Loc>> key, final Computable<T> element, @Nullable final Loc location) { |
| final List<Weigher> weighers = getWeighers(key); |
| return new WeighingComparable<T,Loc>(element, location, ContainerUtil.toArray(weighers, new Weigher[weighers.size()])); |
| } |
| |
| public static <T,Loc> List<Weigher> getWeighers(Key<? extends Weigher<T, Loc>> key) { |
| return COLLECTOR.forKey(key); |
| } |
| } |