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    
017    package org.jetbrains.jet.lang.resolve.calls.results;
018    
019    import com.google.common.collect.Lists;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.annotations.Nullable;
022    import org.jetbrains.jet.lang.descriptors.CallableDescriptor;
023    import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCallWithTrace;
024    import org.jetbrains.jet.lang.types.JetType;
025    
026    import java.util.Collection;
027    
028    public 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    }