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.autocasts;
018    
019    import com.google.common.collect.Lists;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.jet.lang.resolve.BindingContext;
022    import org.jetbrains.jet.lang.resolve.scopes.receivers.ReceiverValue;
023    
024    import java.util.List;
025    
026    public class AutoCastServiceImpl implements AutoCastService {
027        private final DataFlowInfo dataFlowInfo;
028        private final BindingContext bindingContext;
029    
030        public AutoCastServiceImpl(DataFlowInfo dataFlowInfo, BindingContext bindingContext) {
031            this.dataFlowInfo = dataFlowInfo;
032            this.bindingContext = bindingContext;
033        }
034    
035        @NotNull
036        @Override
037        public List<ReceiverValue> getVariantsForReceiver(@NotNull ReceiverValue receiverValue) {
038            List<ReceiverValue> variants = Lists.newArrayList(AutoCastUtils.getAutoCastVariants(bindingContext, dataFlowInfo, receiverValue));
039            variants.add(receiverValue);
040            return variants;
041        }
042    
043        @NotNull
044        @Override
045        public DataFlowInfo getDataFlowInfo() {
046            return dataFlowInfo;
047        }
048    
049        @Override
050        public boolean isNotNull(@NotNull ReceiverValue receiver) {
051            if (!receiver.getType().isNullable()) return true;
052    
053            List<ReceiverValue> autoCastVariants = AutoCastUtils.getAutoCastVariants(bindingContext, dataFlowInfo, receiver);
054            for (ReceiverValue autoCastVariant : autoCastVariants) {
055                if (!autoCastVariant.getType().isNullable()) return true;
056            }
057            return false;
058        }
059    }