001/*
002 * Copyright 2010-2013 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.jetbrains.jet.lang.resolve.calls.results;
018
019import com.google.common.collect.Lists;
020import org.jetbrains.annotations.NotNull;
021import org.jetbrains.annotations.Nullable;
022import org.jetbrains.jet.lang.descriptors.CallableDescriptor;
023import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCallWithTrace;
024import org.jetbrains.jet.lang.types.JetType;
025
026import java.util.Collection;
027
028public class OverloadResolutionResultsUtil {
029    @NotNull
030    public static <D extends CallableDescriptor> OverloadResolutionResults<D> ambiguity(OverloadResolutionResults<D> results1, OverloadResolutionResults<D> results2) {
031        Collection<ResolvedCallWithTrace<D>> resultingCalls = Lists.newArrayList();
032        resultingCalls.addAll((Collection<ResolvedCallWithTrace<D>>) results1.getResultingCalls());
033        resultingCalls.addAll((Collection<ResolvedCallWithTrace<D>>) results2.getResultingCalls());
034        return OverloadResolutionResultsImpl.ambiguity(resultingCalls);
035    }
036
037    @Nullable
038    public static <D extends CallableDescriptor> JetType getResultType(OverloadResolutionResults<D> results) {
039        if (results.isSuccess()) {
040            return results.getResultingDescriptor().getReturnType();
041        }
042        return null;
043    }
044}