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
219
220
221
222
223
224
225
226
227
228
229
230
231
|
// 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.
// Author: kenton@google.com (Kenton Varda)
// Based on original Protocol Buffers design by
// Sanjay Ghemawat, Jeff Dean, and others.
#ifndef GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_H__
#define GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_H__
#include <cstdint>
#include <memory>
#include <set>
#include <string>
#include <google/protobuf/compiler/cpp/cpp_field.h>
#include <google/protobuf/compiler/cpp/cpp_helpers.h>
#include <google/protobuf/compiler/cpp/cpp_message_layout_helper.h>
#include <google/protobuf/compiler/cpp/cpp_options.h>
#include <google/protobuf/compiler/cpp/cpp_parse_function_generator.h>
namespace google {
namespace protobuf {
namespace io {
class Printer; // printer.h
}
} // namespace protobuf
} // namespace google
namespace google {
namespace protobuf {
namespace compiler {
namespace cpp {
class EnumGenerator; // enum.h
class ExtensionGenerator; // extension.h
class MessageGenerator {
public:
// See generator.cc for the meaning of dllexport_decl.
MessageGenerator(const Descriptor* descriptor,
const std::map<TProtoStringType, TProtoStringType>& vars,
int index_in_file_messages, const Options& options,
MessageSCCAnalyzer* scc_analyzer);
~MessageGenerator();
// Append the two types of nested generators to the corresponding vector.
void AddGenerators(
std::vector<std::unique_ptr<EnumGenerator>>* enum_generators,
std::vector<std::unique_ptr<ExtensionGenerator>>* extension_generators);
// Generate definitions for this class and all its nested types.
void GenerateClassDefinition(io::Printer* printer);
// Generate definitions of inline methods (placed at the end of the header
// file).
void GenerateInlineMethods(io::Printer* printer);
// Source file stuff.
// Generate all non-inline methods for this class.
void GenerateClassMethods(io::Printer* printer);
// Generate source file code that should go outside any namespace.
void GenerateSourceInProto2Namespace(io::Printer* printer);
private:
// Generate declarations and definitions of accessors for fields.
void GenerateFieldAccessorDeclarations(io::Printer* printer);
void GenerateFieldAccessorDefinitions(io::Printer* printer);
// Generate the table-driven parsing array. Returns the number of entries
// generated.
size_t GenerateParseOffsets(io::Printer* printer);
size_t GenerateParseAuxTable(io::Printer* printer);
// Generates a ParseTable entry. Returns whether the proto uses
// table-driven parsing.
bool GenerateParseTable(io::Printer* printer, size_t offset,
size_t aux_offset);
// Generate the field offsets array. Returns the a pair of the total number
// of entries generated and the index of the first has_bit entry.
std::pair<size_t, size_t> GenerateOffsets(io::Printer* printer);
void GenerateSchema(io::Printer* printer, int offset, int has_offset);
// For each field generates a table entry describing the field for the
// table driven serializer.
int GenerateFieldMetadata(io::Printer* printer);
// Generate constructors and destructor.
void GenerateStructors(io::Printer* printer);
// The compiler typically generates multiple copies of each constructor and
// destructor: http://gcc.gnu.org/bugs.html#nonbugs_cxx
// Placing common code in a separate method reduces the generated code size.
//
// Generate the shared constructor code.
void GenerateSharedConstructorCode(io::Printer* printer);
// Generate the shared destructor code.
void GenerateSharedDestructorCode(io::Printer* printer);
// Generate the arena-specific destructor code.
void GenerateArenaDestructorCode(io::Printer* printer);
// Generate the constexpr constructor for constant initialization of the
// default instance.
void GenerateConstexprConstructor(io::Printer* printer);
// Generate standard Message methods.
void GenerateClear(io::Printer* printer);
void GenerateOneofClear(io::Printer* printer);
void GenerateVerify(io::Printer* printer);
void GenerateSerializeWithCachedSizes(io::Printer* printer);
void GenerateSerializeWithCachedSizesToArray(io::Printer* printer);
void GenerateSerializeWithCachedSizesBody(io::Printer* printer);
void GenerateSerializeWithCachedSizesBodyShuffled(io::Printer* printer);
void GenerateByteSize(io::Printer* printer);
void GenerateMergeFrom(io::Printer* printer);
void GenerateClassSpecificMergeFrom(io::Printer* printer);
void GenerateCopyFrom(io::Printer* printer);
void GenerateSwap(io::Printer* printer);
void GenerateIsInitialized(io::Printer* printer);
// Helpers for GenerateSerializeWithCachedSizes().
//
// cached_has_bit_index maintains that:
// cached_has_bits = _has_bits_[cached_has_bit_index]
// for cached_has_bit_index >= 0
void GenerateSerializeOneField(io::Printer* printer,
const FieldDescriptor* field,
int cached_has_bits_index);
// Generate a switch statement to serialize 2+ fields from the same oneof.
// Or, if fields.size() == 1, just call GenerateSerializeOneField().
void GenerateSerializeOneofFields(
io::Printer* printer, const std::vector<const FieldDescriptor*>& fields);
void GenerateSerializeOneExtensionRange(
io::Printer* printer, const Descriptor::ExtensionRange* range);
// Generates has_foo() functions and variables for singular field has-bits.
void GenerateSingularFieldHasBits(const FieldDescriptor* field,
Formatter format);
// Generates has_foo() functions and variables for oneof field has-bits.
void GenerateOneofHasBits(io::Printer* printer);
// Generates has_foo_bar() functions for oneof members.
void GenerateOneofMemberHasBits(const FieldDescriptor* field,
const Formatter& format);
// Generates the clear_foo() method for a field.
void GenerateFieldClear(const FieldDescriptor* field, bool is_inline,
Formatter format);
void GenerateConstructorBody(io::Printer* printer,
std::vector<bool> already_processed,
bool copy_constructor) const;
size_t HasBitsSize() const;
size_t InlinedStringDonatedSize() const;
int HasBitIndex(const FieldDescriptor* a) const;
int HasByteIndex(const FieldDescriptor* a) const;
int HasWordIndex(const FieldDescriptor* a) const;
bool SameHasByte(const FieldDescriptor* a, const FieldDescriptor* b) const;
std::vector<ui32> RequiredFieldsBitMask() const;
const Descriptor* descriptor_;
int index_in_file_messages_;
TProtoStringType classname_;
Options options_;
FieldGeneratorMap field_generators_;
// optimized_order_ is the order we layout the message's fields in the
// class. This is reused to initialize the fields in-order for cache
// efficiency.
//
// optimized_order_ excludes oneof fields and weak fields.
std::vector<const FieldDescriptor*> optimized_order_;
std::vector<int> has_bit_indices_;
int max_has_bit_index_;
// A map from field index to inlined_string index. For non-inlined-string
// fields, the element is -1.
std::vector<int> inlined_string_indices_;
// The count of inlined_string fields in the message.
int max_inlined_string_index_;
std::vector<const EnumGenerator*> enum_generators_;
std::vector<const ExtensionGenerator*> extension_generators_;
int num_required_fields_;
int num_weak_fields_;
// table_driven_ indicates the generated message uses table-driven parsing.
bool table_driven_;
std::unique_ptr<MessageLayoutHelper> message_layout_helper_;
std::unique_ptr<ParseFunctionGenerator> parse_function_generator_;
MessageSCCAnalyzer* scc_analyzer_;
std::map<TProtoStringType, TProtoStringType> variables_;
friend class FileGenerator;
GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(MessageGenerator);
};
} // namespace cpp
} // namespace compiler
} // namespace protobuf
} // namespace google
#endif // GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_H__
|
