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
|
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef GOOGLE_PROTOBUF_IMPLICIT_WEAK_MESSAGE_H__
#define GOOGLE_PROTOBUF_IMPLICIT_WEAK_MESSAGE_H__
#include <string>
#include <google/protobuf/io/coded_stream.h>
#include <google/protobuf/arena.h>
#include <google/protobuf/message_lite.h>
#include <google/protobuf/repeated_field.h>
#ifdef SWIG
#error "You cannot SWIG proto headers"
#endif
#include <google/protobuf/port_def.inc>
// This file is logically internal-only and should only be used by protobuf
// generated code.
namespace google {
namespace protobuf {
namespace internal {
// An implementation of MessageLite that treats all data as unknown. This type
// acts as a placeholder for an implicit weak field in the case where the true
// message type does not get linked into the binary.
class PROTOBUF_EXPORT ImplicitWeakMessage : public MessageLite {
public:
ImplicitWeakMessage() {}
explicit ImplicitWeakMessage(Arena* arena) : MessageLite(arena) {}
static const ImplicitWeakMessage* default_instance();
TProtoStringType GetTypeName() const override { return ""; }
MessageLite* New(Arena* arena) const override {
return Arena::CreateMessage<ImplicitWeakMessage>(arena);
}
void Clear() override { data_.clear(); }
bool IsInitialized() const override { return true; }
void CheckTypeAndMergeFrom(const MessageLite& other) override {
data_.append(static_cast<const ImplicitWeakMessage&>(other).data_);
}
const char* _InternalParse(const char* ptr, ParseContext* ctx) final;
size_t ByteSizeLong() const override { return data_.size(); }
uint8_t* _InternalSerialize(uint8_t* target,
io::EpsCopyOutputStream* stream) const final {
return stream->WriteRaw(data_.data(), static_cast<int>(data_.size()),
target);
}
int GetCachedSize() const override { return static_cast<int>(data_.size()); }
typedef void InternalArenaConstructable_;
private:
TProtoStringType data_;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ImplicitWeakMessage);
};
// A type handler for use with implicit weak repeated message fields.
template <typename ImplicitWeakType>
class ImplicitWeakTypeHandler {
public:
typedef MessageLite Type;
static constexpr bool Moveable = false;
static inline MessageLite* NewFromPrototype(const MessageLite* prototype,
Arena* arena = nullptr) {
return prototype->New(arena);
}
static inline void Delete(MessageLite* value, Arena* arena) {
if (arena == nullptr) {
delete value;
}
}
static inline Arena* GetArena(MessageLite* value) {
return value->GetArena();
}
static inline void Clear(MessageLite* value) { value->Clear(); }
static void Merge(const MessageLite& from, MessageLite* to) {
to->CheckTypeAndMergeFrom(from);
}
};
} // namespace internal
template <typename T>
struct WeakRepeatedPtrField {
using TypeHandler = internal::ImplicitWeakTypeHandler<T>;
constexpr WeakRepeatedPtrField() : weak() {}
explicit WeakRepeatedPtrField(Arena* arena) : weak(arena) {}
~WeakRepeatedPtrField() { weak.template Destroy<TypeHandler>(); }
typedef internal::RepeatedPtrIterator<MessageLite> iterator;
typedef internal::RepeatedPtrIterator<const MessageLite> const_iterator;
typedef internal::RepeatedPtrOverPtrsIterator<MessageLite*, void*>
pointer_iterator;
typedef internal::RepeatedPtrOverPtrsIterator<const MessageLite* const,
const void* const>
const_pointer_iterator;
iterator begin() { return iterator(base().raw_data()); }
const_iterator begin() const { return iterator(base().raw_data()); }
const_iterator cbegin() const { return begin(); }
iterator end() { return begin() + base().size(); }
const_iterator end() const { return begin() + base().size(); }
const_iterator cend() const { return end(); }
pointer_iterator pointer_begin() {
return pointer_iterator(base().raw_mutable_data());
}
const_pointer_iterator pointer_begin() const {
return const_pointer_iterator(base().raw_mutable_data());
}
pointer_iterator pointer_end() {
return pointer_iterator(base().raw_mutable_data() + base().size());
}
const_pointer_iterator pointer_end() const {
return const_pointer_iterator(base().raw_mutable_data() + base().size());
}
MessageLite* AddWeak(const MessageLite* prototype) {
return base().AddWeak(prototype);
}
T* Add() { return weak.Add(); }
void Clear() { base().template Clear<TypeHandler>(); }
void MergeFrom(const WeakRepeatedPtrField& other) {
base().template MergeFrom<TypeHandler>(other.base());
}
void InternalSwap(WeakRepeatedPtrField* other) {
base().InternalSwap(&other->base());
}
const internal::RepeatedPtrFieldBase& base() const { return weak; }
internal::RepeatedPtrFieldBase& base() { return weak; }
// Union disables running the destructor. Which would create a strong link.
// Instead we explicitly destroy the underlying base through the virtual
// destructor.
union {
RepeatedPtrField<T> weak;
};
};
} // namespace protobuf
} // namespace google
#include <google/protobuf/port_undef.inc>
#endif // GOOGLE_PROTOBUF_IMPLICIT_WEAK_MESSAGE_H__
|
