/src/abseil-cpp/absl/log/internal/structured_proto.cc
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1 | | // |
2 | | // Copyright 2024 The Abseil Authors. |
3 | | // |
4 | | // Licensed under the Apache License, Version 2.0 (the "License"); |
5 | | // you may not use this file except in compliance with the License. |
6 | | // You may obtain a copy of the License at |
7 | | // |
8 | | // https://www.apache.org/licenses/LICENSE-2.0 |
9 | | // |
10 | | // Unless required by applicable law or agreed to in writing, software |
11 | | // distributed under the License is distributed on an "AS IS" BASIS, |
12 | | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
13 | | // See the License for the specific language governing permissions and |
14 | | // limitations under the License. |
15 | | |
16 | | #include "absl/log/internal/structured_proto.h" |
17 | | |
18 | | #include <cstdint> |
19 | | |
20 | | #include "absl/base/config.h" |
21 | | #include "absl/log/internal/proto.h" |
22 | | #include "absl/types/span.h" |
23 | | #include "absl/types/variant.h" |
24 | | |
25 | | namespace absl { |
26 | | ABSL_NAMESPACE_BEGIN |
27 | | namespace log_internal { |
28 | | |
29 | | namespace { |
30 | | |
31 | | // Handles protobuf-encoding a type contained inside |
32 | | // `StructuredProtoField::Varint`. |
33 | | struct VarintEncoderVisitor final { |
34 | | template <typename T> |
35 | 0 | bool operator()(T value) const { |
36 | 0 | return EncodeVarint(field_number, value, &buf); |
37 | 0 | } Unexecuted instantiation: structured_proto.cc:bool absl::log_internal::(anonymous namespace)::VarintEncoderVisitor::operator()<unsigned long>(unsigned long) const Unexecuted instantiation: structured_proto.cc:bool absl::log_internal::(anonymous namespace)::VarintEncoderVisitor::operator()<long>(long) const Unexecuted instantiation: structured_proto.cc:bool absl::log_internal::(anonymous namespace)::VarintEncoderVisitor::operator()<unsigned int>(unsigned int) const Unexecuted instantiation: structured_proto.cc:bool absl::log_internal::(anonymous namespace)::VarintEncoderVisitor::operator()<int>(int) const Unexecuted instantiation: structured_proto.cc:bool absl::log_internal::(anonymous namespace)::VarintEncoderVisitor::operator()<bool>(bool) const |
38 | | |
39 | | uint64_t field_number; |
40 | | absl::Span<char>& buf; |
41 | | }; |
42 | | |
43 | | // Handles protobuf-encoding a type contained inside |
44 | | // `StructuredProtoField::I64`. |
45 | | struct I64EncoderVisitor final { |
46 | 0 | bool operator()(uint64_t value) const { |
47 | 0 | return Encode64Bit(field_number, value, &buf); |
48 | 0 | } |
49 | | |
50 | 0 | bool operator()(int64_t value) const { |
51 | 0 | return Encode64Bit(field_number, value, &buf); |
52 | 0 | } |
53 | | |
54 | 0 | bool operator()(double value) const { |
55 | 0 | return EncodeDouble(field_number, value, &buf); |
56 | 0 | } |
57 | | |
58 | | uint64_t field_number; |
59 | | absl::Span<char>& buf; |
60 | | }; |
61 | | |
62 | | // Handles protobuf-encoding a type contained inside |
63 | | // `StructuredProtoField::I32`. |
64 | | struct I32EncoderVisitor final { |
65 | 0 | bool operator()(uint32_t value) const { |
66 | 0 | return Encode32Bit(field_number, value, &buf); |
67 | 0 | } |
68 | | |
69 | 0 | bool operator()(int32_t value) const { |
70 | 0 | return Encode32Bit(field_number, value, &buf); |
71 | 0 | } |
72 | | |
73 | 0 | bool operator()(float value) const { |
74 | 0 | return EncodeFloat(field_number, value, &buf); |
75 | 0 | } |
76 | | |
77 | | uint64_t field_number; |
78 | | absl::Span<char>& buf; |
79 | | }; |
80 | | |
81 | | // Handles protobuf-encoding a type contained inside `StructuredProtoField`. |
82 | | struct EncoderVisitor final { |
83 | 0 | bool operator()(StructuredProtoField::Varint varint) { |
84 | 0 | return absl::visit(VarintEncoderVisitor{field_number, buf}, varint); |
85 | 0 | } |
86 | | |
87 | 0 | bool operator()(StructuredProtoField::I64 i64) { |
88 | 0 | return absl::visit(I64EncoderVisitor{field_number, buf}, i64); |
89 | 0 | } |
90 | | |
91 | 0 | bool operator()(StructuredProtoField::LengthDelimited length_delimited) { |
92 | | // No need for a visitor, since `StructuredProtoField::LengthDelimited` is |
93 | | // just `absl::Span<const char>`. |
94 | 0 | return EncodeBytes(field_number, length_delimited, &buf); |
95 | 0 | } |
96 | | |
97 | 0 | bool operator()(StructuredProtoField::I32 i32) { |
98 | 0 | return absl::visit(I32EncoderVisitor{field_number, buf}, i32); |
99 | 0 | } |
100 | | |
101 | | uint64_t field_number; |
102 | | absl::Span<char>& buf; |
103 | | }; |
104 | | |
105 | | } // namespace |
106 | | |
107 | | bool EncodeStructuredProtoField(StructuredProtoField field, |
108 | 0 | absl::Span<char>& buf) { |
109 | 0 | return absl::visit(EncoderVisitor{field.field_number, buf}, field.value); |
110 | 0 | } |
111 | | |
112 | | } // namespace log_internal |
113 | | |
114 | | ABSL_NAMESPACE_END |
115 | | } // namespace absl |