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
|
/*
* Copyright 2018 Google
*
* 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.
*/
#include "Firestore/core/src/firebase/firestore/remote/serializer.h"
#include <pb_decode.h>
#include <pb_encode.h>
namespace firebase {
namespace firestore {
namespace remote {
using firebase::firestore::model::FieldValue;
Serializer::TypedValue Serializer::EncodeFieldValue(
const FieldValue& field_value) {
Serializer::TypedValue proto_value{
field_value.type(), google_firestore_v1beta1_Value_init_default};
switch (field_value.type()) {
case FieldValue::Type::Null:
proto_value.value.null_value = google_protobuf_NullValue_NULL_VALUE;
break;
default:
// TODO(rsgowman): implement the other types
abort();
}
return proto_value;
}
void Serializer::EncodeTypedValue(const TypedValue& value,
std::vector<uint8_t>* out_bytes) {
bool status;
// TODO(rsgowman): how large should the output buffer be? Do some
// investigation to see if we can get nanopb to tell us how much space it's
// going to need.
uint8_t buf[1024];
pb_ostream_t stream = pb_ostream_from_buffer(buf, sizeof(buf));
switch (value.type) {
case FieldValue::Type::Null:
status = pb_encode_tag(&stream, PB_WT_VARINT,
google_firestore_v1beta1_Value_null_value_tag);
if (!status) {
// TODO(rsgowman): figure out error handling
abort();
}
status = pb_encode_varint(&stream, value.value.null_value);
if (!status) {
// TODO(rsgowman): figure out error handling
abort();
}
out_bytes->insert(out_bytes->end(), buf, buf + stream.bytes_written);
break;
default:
// TODO(rsgowman): implement the other types
abort();
}
}
FieldValue Serializer::DecodeFieldValue(
const Serializer::TypedValue& value_proto) {
switch (value_proto.type) {
case FieldValue::Type::Null:
return FieldValue::NullValue();
default:
// TODO(rsgowman): implement the other types
abort();
}
}
Serializer::TypedValue Serializer::DecodeTypedValue(const uint8_t* bytes,
size_t length) {
pb_istream_t stream = pb_istream_from_buffer(bytes, length);
pb_wire_type_t wire_type;
uint32_t tag;
bool eof;
bool status = pb_decode_tag(&stream, &wire_type, &tag, &eof);
if (!status || wire_type != PB_WT_VARINT) {
// TODO(rsgowman): figure out error handling
abort();
}
switch (tag) {
case google_firestore_v1beta1_Value_null_value_tag:
return Serializer::TypedValue{
FieldValue::Type::Null, google_firestore_v1beta1_Value_init_default};
default:
// TODO(rsgowman): figure out error handling
abort();
}
}
} // namespace remote
} // namespace firestore
} // namespace firebase
|
