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/*
 * Copyright 2010-2015 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 org.jetbrains.kotlin.util.slicedMap;

import kotlin.jvm.functions.Function3;
import org.jetbrains.annotations.NotNull;

import java.util.Collection;
import java.util.Collections;

public interface SlicedMap {

    SlicedMap DO_NOTHING = new SlicedMap() {
        @Override
        public  V get(ReadOnlySlice slice, K key) {
            return slice.computeValue(this, key, null, true);
        }

        @Override
        public  Collection getKeys(WritableSlice slice) {
            return Collections.emptySet();
        }

        @Override
        public void forEach(@NotNull Function3 f) {
        }
    };

     V get(ReadOnlySlice slice, K key);

    // slice.isCollective() must return true
     Collection getKeys(WritableSlice slice);

    void forEach(@NotNull Function3 f);
}