/
encode.js
218 lines (190 loc) · 7.94 KB
/
encode.js
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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
"use strict";
module.exports = encode;
var Enum = require("./enum"),
Writer = require("./writer"),
types = require("./types"),
util = require("./util");
var safeProp = util.safeProp;
function encodeType(field, value, writer) {
if (field.resolvedType.group)
field.resolvedType.encode(value, writer.uint32((field.id << 3 | 3) >>> 0)).uint32((field.id << 3 | 4) >>> 0);
else if (field.resolvedType.encode(value, writer.fork()).len || field.required)
writer.ldelim(field.id);
else
writer.reset();
}
/**
* General purpose message encoder.
* @param {Message|Object} message Runtime message or plain object to encode
* @param {Writer} [writer] Writer to encode to
* @returns {Writer} writer
* @this Type
* @property {GenerateEncoder} generate Generates a type specific encoder
*/
function encode(message, writer) {
/* eslint-disable block-scoped-var, no-redeclare */
if (!writer)
writer = Writer.create();
var fields = this.getFieldsArray(), fi = 0;
while (fi < fields.length) {
var field = fields[fi++].resolve(),
type = field.resolvedType instanceof Enum ? "uint32" : field.type,
wireType = types.basic[type];
// Map fields
if (field.map) {
var keyType = field.resolvedKeyType /* only valid is enum */ ? "uint32" : field.keyType;
if (message[field.name] && message[field.name] !== util.emptyObject) {
for (var keys = Object.keys(message[field.name]), i = 0; i < keys.length; ++i) {
writer.uint32((field.id << 3 | 2) >>> 0).fork()
.uint32(/*1*/8 | types.mapKey[keyType])[keyType](keys[i]);
if (wireType === undefined)
field.resolvedType.encode(message[field.name][keys[i]], writer.uint32(/*2,2*/18).fork()).ldelim();
else
writer.uint32(/*2*/16 | wireType)[type](message[field.name][keys[i]]);
writer.ldelim();
}
}
// Repeated fields
} else if (field.repeated) {
var values = message[field.name];
if (values && values.length) {
// Packed repeated
if (field.packed && types.packed[type] !== undefined) {
if (values.length) {
writer.uint32((field.id << 3 | 2) >>> 0).fork();
var i = 0;
while (i < values.length)
writer[type](values[i++]);
writer.ldelim();
}
// Non-packed
} else {
var i = 0;
if (wireType === undefined)
while (i < values.length)
encodeType(field, values[i++], writer);
else
while (i < values.length)
writer.uint32((field.id << 3 | wireType) >>> 0)[type](values[i++]);
}
}
// Non-repeated
} else {
var value = message[field.name];
if (
field.partOf && message[field.partOf.name] === field.name
||
(field.required || value !== undefined) && (field.long ? util.longNe(value, field.defaultValue.low, field.defaultValue.high) : value !== field.defaultValue)
) {
if (wireType === undefined)
encodeType(field, value, writer);
else
writer.uint32((field.id << 3 | wireType) >>> 0)[type](value);
}
}
}
return writer;
/* eslint-enable block-scoped-var, no-redeclare */
}
function genEncodeType(gen, field, fieldIndex, ref, alwaysRequired) {
if (field.resolvedType.group)
return gen("types[%d].encode(%s,w.uint32(%d)).uint32(%d)", fieldIndex, ref, (field.id << 3 | 3) >>> 0, (field.id << 3 | 4) >>> 0);
return alwaysRequired || field.required
? gen("types[%d].encode(%s,w.uint32(%d).fork()).ldelim()", fieldIndex, ref, (field.id << 3 | 2) >>> 0)
: gen("types[%d].encode(%s,w.fork()).len&&w.ldelim(%d)||w.reset()", fieldIndex, ref, field.id);
}
/**
* Generates an {@link Encoder|encoder} specific to the specified message type.
* @typedef GenerateEncoder
* @type {function}
* @param {Type} mtype Message type
* @returns {Codegen} Codegen instance
*/
/**/
encode.generate = function generate(mtype) {
/* eslint-disable no-unexpected-multiline, block-scoped-var, no-redeclare */
var fields = mtype.getFieldsArray();
var oneofs = mtype.getOneofsArray();
var gen = util.codegen("m", "w")
("w||(w=Writer.create())");
var i;
for (var i = 0; i < fields.length; ++i) {
var field = fields[i].resolve(),
type = field.resolvedType instanceof Enum ? "uint32" : field.type,
wireType = types.basic[type],
prop = safeProp(field.name);
// Map fields
if (field.map) {
var keyType = field.resolvedKeyType /* only valid is enum */ ? "uint32" : field.keyType;
gen
("if(m%s&&m%s!==util.emptyObject){", prop, prop)
("for(var ks=Object.keys(m%s),i=0;i<ks.length;++i){", prop)
("w.uint32(%d).fork().uint32(%d).%s(ks[i])", (field.id << 3 | 2) >>> 0, 8 | types.mapKey[keyType], keyType);
if (wireType === undefined) gen
("types[%d].encode(m%s[ks[i]],w.uint32(18).fork()).ldelim()", i, prop); // can't be groups
else gen
("w.uint32(%d).%s(m%s[ks[i]])", 16 | wireType, type, prop);
gen
("w.ldelim()")
("}")
("}");
// Repeated fields
} else if (field.repeated) {
// Packed repeated
if (field.packed && types.packed[type] !== undefined) { gen
("if(m%s&&m%s.length){", prop, prop)
("w.uint32(%d).fork()", (field.id << 3 | 2) >>> 0)
("for(var i=0;i<m%s.length;++i)", prop)
("w.%s(m%s[i])", type, prop)
("w.ldelim()", field.id)
("}");
// Non-packed
} else { gen
("if(m%s)", prop)
("for(var i=0;i<m%s.length;++i)", prop);
if (wireType === undefined)
genEncodeType(gen, field, i, "m" + prop + "[i]", true);
else gen
("w.uint32(%d).%s(m%s[i])", (field.id << 3 | wireType) >>> 0, type, prop);
}
// Non-repeated
} else if (!field.partOf) {
if (!field.required) {
if (field.long) {
gen
("if(m%s!==undefined&&util.longNe(m%s,%d,%d))", prop, prop, field.defaultValue.low, field.defaultValue.high);
} else gen
("if(m%s!==undefined&&m%s!==%j)", prop, prop, field.defaultValue);
}
if (wireType === undefined)
genEncodeType(gen, field, i, "m" + prop);
else gen
("w.uint32(%d).%s(m%s)", (field.id << 3 | wireType) >>> 0, type, prop);
}
}
for (var i = 0; i < oneofs.length; ++i) {
var oneof = oneofs[i],
prop = safeProp(oneof.name);
gen
("switch(m%s){", prop);
var oneofFields = oneof.getFieldsArray();
for (var j = 0; j < oneofFields.length; ++j) {
var field = oneofFields[j],
type = field.resolvedType instanceof Enum ? "uint32" : field.type,
wireType = types.basic[type],
prop = safeProp(field.name);
gen
("case%j:", field.name);
if (wireType === undefined)
genEncodeType(gen, field, fields.indexOf(field), "m" + prop);
else gen
("w.uint32(%d).%s(m%s)", (field.id << 3 | wireType) >>> 0, type, prop);
gen
("break;");
} gen
("}");
}
return gen
("return w");
/* eslint-enable no-unexpected-multiline, block-scoped-var, no-redeclare */
};