/*
 * Copyright (c) 2008-2014 MongoDB, Inc.
 *
 * 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.bson.codecs;

import org.bson.BsonReader;

/**
 * Decoders are used for reading BSON types from MongoDB and converting them into Java objects.
 *
 * @param <T> the type to decode into, the return type of the {@link #decode(org.bson.BsonReader, DecoderContext)} method.
 * @since 3.0
 */
public interface Decoder<T> {
    /**
     * Decodes a BSON value from the given reader into an instance of the type parameter {@code T}.
     *
     * @param reader         the BSON reader
     * @param decoderContext the decoder context
     * @return an instance of the type parameter {@code T}.
     */
    T decode(BsonReader reader, DecoderContext decoderContext);
}