1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
// Copyright 2008 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 Protocol Buffer (Message) Descriptor class.
*/
goog.provide('goog.proto2.Descriptor');
goog.provide('goog.proto2.Metadata');
goog.require('goog.array');
goog.require('goog.object');
goog.require('goog.proto2.Util');
/**
* @typedef {{name: (string|undefined),
* fullName: (string|undefined),
* containingType: (goog.proto2.Message|undefined)}}
*/
goog.proto2.Metadata;
/**
* A class which describes a Protocol Buffer 2 Message.
*
* @param {function(new:goog.proto2.Message)} messageType Constructor for
* the message class that this descriptor describes.
* @param {!goog.proto2.Metadata} metadata The metadata about the message that
* will be used to construct this descriptor.
* @param {Array.<!goog.proto2.FieldDescriptor>} fields The fields of the
* message described by this descriptor.
*
* @constructor
*/
goog.proto2.Descriptor = function(messageType, metadata, fields) {
/**
* @type {function(new:goog.proto2.Message)}
* @private
*/
this.messageType_ = messageType;
/**
* @type {?string}
* @private
*/
this.name_ = metadata.name || null;
/**
* @type {?string}
* @private
*/
this.fullName_ = metadata.fullName || null;
/**
* @type {goog.proto2.Message|undefined}
* @private
*/
this.containingType_ = metadata.containingType;
/**
* The fields of the message described by this descriptor.
* @type {!Object.<number, !goog.proto2.FieldDescriptor>}
* @private
*/
this.fields_ = {};
for (var i = 0; i < fields.length; i++) {
var field = fields[i];
this.fields_[field.getTag()] = field;
}
};
/**
* Returns the name of the message, if any.
*
* @return {?string} The name.
*/
goog.proto2.Descriptor.prototype.getName = function() {
return this.name_;
};
/**
* Returns the full name of the message, if any.
*
* @return {?string} The name.
*/
goog.proto2.Descriptor.prototype.getFullName = function() {
return this.fullName_;
};
/**
* Returns the descriptor of the containing message type or null if none.
*
* @return {goog.proto2.Descriptor} The descriptor.
*/
goog.proto2.Descriptor.prototype.getContainingType = function() {
if (!this.containingType_) {
return null;
}
return this.containingType_.getDescriptor();
};
/**
* Returns the fields in the message described by this descriptor ordered by
* tag.
*
* @return {!Array.<!goog.proto2.FieldDescriptor>} The array of field
* descriptors.
*/
goog.proto2.Descriptor.prototype.getFields = function() {
/**
* @param {!goog.proto2.FieldDescriptor} fieldA First field.
* @param {!goog.proto2.FieldDescriptor} fieldB Second field.
* @return {number} Negative if fieldA's tag number is smaller, positive
* if greater, zero if the same.
*/
function tagComparator(fieldA, fieldB) {
return fieldA.getTag() - fieldB.getTag();
};
var fields = goog.object.getValues(this.fields_);
goog.array.sort(fields, tagComparator);
return fields;
};
/**
* Returns the fields in the message as a key/value map, where the key is
* the tag number of the field. DO NOT MODIFY THE RETURNED OBJECT. We return
* the actual, internal, fields map for performance reasons, and changing the
* map can result in undefined behavior of this library.
*
* @return {!Object.<number, !goog.proto2.FieldDescriptor>} The field map.
*/
goog.proto2.Descriptor.prototype.getFieldsMap = function() {
return this.fields_;
};
/**
* Returns the field matching the given name, if any. Note that
* this method searches over the *original* name of the field,
* not the camelCase version.
*
* @param {string} name The field name for which to search.
*
* @return {goog.proto2.FieldDescriptor} The field found, if any.
*/
goog.proto2.Descriptor.prototype.findFieldByName = function(name) {
var valueFound = goog.object.findValue(this.fields_,
function(field, key, obj) {
return field.getName() == name;
});
return /** @type {goog.proto2.FieldDescriptor} */ (valueFound) || null;
};
/**
* Returns the field matching the given tag number, if any.
*
* @param {number|string} tag The field tag number for which to search.
*
* @return {goog.proto2.FieldDescriptor} The field found, if any.
*/
goog.proto2.Descriptor.prototype.findFieldByTag = function(tag) {
goog.proto2.Util.assert(goog.string.isNumeric(tag));
return this.fields_[parseInt(tag, 10)] || null;
};
/**
* Creates an instance of the message type that this descriptor
* describes.
*
* @return {!goog.proto2.Message} The instance of the message.
*/
goog.proto2.Descriptor.prototype.createMessageInstance = function() {
return new this.messageType_;
};
|
