/*
 * 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.resolve.scopes.receivers;

import org.jetbrains.annotations.NotNull;
import org.jetbrains.kotlin.types.JetType;

public interface ReceiverValue {
    ReceiverValue NO_RECEIVER = new ReceiverValue() {
        @NotNull
        @Override
        public JetType getType() {
            throw new UnsupportedOperationException("NO_RECEIVER.getType()");
        }

        @Override
        public boolean exists() {
            return false;
        }

        @Override
        public String toString() {
            return "NO_RECEIVER";
        }
    };

    ReceiverValue IRRELEVANT_RECEIVER = new ReceiverValue() {
        @NotNull
        @Override
        public JetType getType() {
            throw new UnsupportedOperationException("IRRELEVANT_RECEIVER.getType()");
        }

        @Override
        public boolean exists() {
            return false;
        }

        @Override
        public String toString() {
            return "IRRELEVANT_RECEIVER";
        }
    };

    @NotNull
    JetType getType();

    boolean exists();
}
