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// Copyright 2009 The Closure Library Authors. All Rights Reserved.
//
// 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.
/**
* @fileoverview Base class for all PB2 lazy deserializer. A lazy deserializer
* is a serializer whose deserialization occurs on the fly as data is
* requested. In order to use a lazy deserializer, the serialized form
* of the data must be an object or array that can be indexed by the tag
* number.
*
*/
goog.provide('goog.proto2.LazyDeserializer');
goog.require('goog.proto2.Serializer');
goog.require('goog.proto2.Util');
/**
* Base class for all lazy deserializers.
*
* @constructor
* @extends {goog.proto2.Serializer}
*/
goog.proto2.LazyDeserializer = function() {};
goog.inherits(goog.proto2.LazyDeserializer, goog.proto2.Serializer);
/** @override */
goog.proto2.LazyDeserializer.prototype.deserialize =
function(descriptor, data) {
var message = descriptor.createMessageInstance();
message.initializeForLazyDeserializer(this, data);
goog.proto2.Util.assert(message instanceof goog.proto2.Message);
return message;
};
/** @override */
goog.proto2.LazyDeserializer.prototype.deserializeTo = function(message, data) {
throw new Error('Unimplemented');
};
/**
* Deserializes a message field from the expected format and places the
* data in the given message
*
* @param {goog.proto2.Message} message The message in which to
* place the information.
* @param {goog.proto2.FieldDescriptor} field The field for which to set the
* message value.
* @param {*} data The serialized data for the field.
*
* @return {*} The deserialized data or null for no value found.
*/
goog.proto2.LazyDeserializer.prototype.deserializeField = goog.abstractMethod;
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