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.autocasts;
018
019import org.jetbrains.annotations.NotNull;
020import org.jetbrains.jet.lang.resolve.scopes.receivers.ReceiverValue;
021
022import java.util.Collections;
023import java.util.List;
024
025public interface AutoCastService {
026    AutoCastService NO_AUTO_CASTS = new AutoCastService() {
027        @NotNull
028        @Override
029        public DataFlowInfo getDataFlowInfo() {
030            return DataFlowInfo.EMPTY;
031        }
032
033        @Override
034        public boolean isNotNull(@NotNull ReceiverValue receiver) {
035            return !receiver.getType().isNullable();
036        }
037
038        @NotNull
039        @Override
040        public List<ReceiverValue> getVariantsForReceiver(@NotNull ReceiverValue receiverValue) {
041            return Collections.singletonList(receiverValue);
042        }
043    };
044
045    @NotNull
046    List<ReceiverValue> getVariantsForReceiver(@NotNull ReceiverValue receiverValue);
047
048    @NotNull
049    DataFlowInfo getDataFlowInfo();
050
051    boolean isNotNull(@NotNull ReceiverValue receiver);
052}