/*
 * Copyright (C) 2008 Google 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 cn.emay.sdk.util.json.gson;

import java.lang.reflect.Type;

/**
 * Context for deserialization that is passed to a custom deserializer during
 * invocation of its
 * {@link JsonDeserializer#deserialize(JsonElement, Type, JsonDeserializationContext)}
 * method.
 *
 * @author Inderjeet Singh
 * @author Joel Leitch
 */
public interface JsonDeserializationContext {

	/**
	 * Invokes default deserialization on the specified object. It should never be
	 * invoked on the element received as a parameter of the
	 * {@link JsonDeserializer#deserialize(JsonElement, Type, JsonDeserializationContext)}
	 * method. Doing so will result in an infinite loop since Gson will in-turn call
	 * the custom deserializer again.
	 *
	 * @param json
	 *            the parse tree.
	 * @param typeOfT
	 *            type of the expected return value.
	 * @param <T>
	 *            The type of the deserialized object.
	 * @return An object of type typeOfT.
	 * @throws JsonParseException
	 *             if the parse tree does not contain expected data.
	 */
	public <T> T deserialize(JsonElement json, Type typeOfT) throws JsonParseException;
}