1 // Protocol Buffers - Google's data interchange format
2 // Copyright 2008 Google Inc. All rights reserved.
3 // https://developers.google.com/protocol-buffers/
4 //
5 // Redistribution and use in source and binary forms, with or without
6 // modification, are permitted provided that the following conditions are
7 // met:
8 //
9 // * Redistributions of source code must retain the above copyright
10 // notice, this list of conditions and the following disclaimer.
11 // * Redistributions in binary form must reproduce the above
12 // copyright notice, this list of conditions and the following disclaimer
13 // in the documentation and/or other materials provided with the
14 // distribution.
15 // * Neither the name of Google Inc. nor the names of its
16 // contributors may be used to endorse or promote products derived from
17 // this software without specific prior written permission.
18 //
19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31 // Author: kenton@google.com (Kenton Varda)
32 // Based on original Protocol Buffers design by
33 // Sanjay Ghemawat, Jeff Dean, and others.
34
35 #include <google/protobuf/compiler/cpp/cpp_field.h>
36 #include <memory>
37
38 #include <google/protobuf/compiler/cpp/cpp_helpers.h>
39 #include <google/protobuf/compiler/cpp/cpp_primitive_field.h>
40 #include <google/protobuf/compiler/cpp/cpp_string_field.h>
41 #include <google/protobuf/compiler/cpp/cpp_enum_field.h>
42 #include <google/protobuf/compiler/cpp/cpp_message_field.h>
43 #include <google/protobuf/descriptor.pb.h>
44 #include <google/protobuf/wire_format.h>
45 #include <google/protobuf/io/printer.h>
46 #include <google/protobuf/stubs/common.h>
47 #include <google/protobuf/stubs/strutil.h>
48
49 namespace google {
50 namespace protobuf {
51 namespace compiler {
52 namespace cpp {
53
54 using internal::WireFormat;
55
SetCommonFieldVariables(const FieldDescriptor * descriptor,map<string,string> * variables,const Options & options)56 void SetCommonFieldVariables(const FieldDescriptor* descriptor,
57 map<string, string>* variables,
58 const Options& options) {
59 (*variables)["name"] = FieldName(descriptor);
60 (*variables)["index"] = SimpleItoa(descriptor->index());
61 (*variables)["number"] = SimpleItoa(descriptor->number());
62 (*variables)["classname"] = ClassName(FieldScope(descriptor), false);
63 (*variables)["declared_type"] = DeclaredTypeMethodName(descriptor->type());
64
65 (*variables)["tag_size"] = SimpleItoa(
66 WireFormat::TagSize(descriptor->number(), descriptor->type()));
67 (*variables)["deprecation"] = descriptor->options().deprecated()
68 ? " PROTOBUF_DEPRECATED" : "";
69
70 (*variables)["cppget"] = "Get";
71 }
72
SetCommonOneofFieldVariables(const FieldDescriptor * descriptor,map<string,string> * variables)73 void SetCommonOneofFieldVariables(const FieldDescriptor* descriptor,
74 map<string, string>* variables) {
75 (*variables)["oneof_prefix"] = descriptor->containing_oneof()->name() + "_.";
76 (*variables)["oneof_name"] = descriptor->containing_oneof()->name();
77 }
78
~FieldGenerator()79 FieldGenerator::~FieldGenerator() {}
80
81 void FieldGenerator::
GenerateMergeFromCodedStreamWithPacking(io::Printer * printer) const82 GenerateMergeFromCodedStreamWithPacking(io::Printer* printer) const {
83 // Reaching here indicates a bug. Cases are:
84 // - This FieldGenerator should support packing, but this method should be
85 // overridden.
86 // - This FieldGenerator doesn't support packing, and this method should
87 // never have been called.
88 GOOGLE_LOG(FATAL) << "GenerateMergeFromCodedStreamWithPacking() "
89 << "called on field generator that does not support packing.";
90
91 }
92
FieldGeneratorMap(const Descriptor * descriptor,const Options & options)93 FieldGeneratorMap::FieldGeneratorMap(const Descriptor* descriptor,
94 const Options& options)
95 : descriptor_(descriptor),
96 field_generators_(
97 new scoped_ptr<FieldGenerator>[descriptor->field_count()]) {
98 // Construct all the FieldGenerators.
99 for (int i = 0; i < descriptor->field_count(); i++) {
100 field_generators_[i].reset(MakeGenerator(descriptor->field(i), options));
101 }
102 }
103
MakeGenerator(const FieldDescriptor * field,const Options & options)104 FieldGenerator* FieldGeneratorMap::MakeGenerator(const FieldDescriptor* field,
105 const Options& options) {
106 if (field->is_repeated()) {
107 switch (field->cpp_type()) {
108 case FieldDescriptor::CPPTYPE_MESSAGE:
109 return new RepeatedMessageFieldGenerator(field, options);
110 case FieldDescriptor::CPPTYPE_STRING:
111 switch (field->options().ctype()) {
112 default: // RepeatedStringFieldGenerator handles unknown ctypes.
113 case FieldOptions::STRING:
114 return new RepeatedStringFieldGenerator(field, options);
115 }
116 case FieldDescriptor::CPPTYPE_ENUM:
117 return new RepeatedEnumFieldGenerator(field, options);
118 default:
119 return new RepeatedPrimitiveFieldGenerator(field, options);
120 }
121 } else if (field->containing_oneof()) {
122 switch (field->cpp_type()) {
123 case FieldDescriptor::CPPTYPE_MESSAGE:
124 return new MessageOneofFieldGenerator(field, options);
125 case FieldDescriptor::CPPTYPE_STRING:
126 switch (field->options().ctype()) {
127 default: // StringOneofFieldGenerator handles unknown ctypes.
128 case FieldOptions::STRING:
129 return new StringOneofFieldGenerator(field, options);
130 }
131 case FieldDescriptor::CPPTYPE_ENUM:
132 return new EnumOneofFieldGenerator(field, options);
133 default:
134 return new PrimitiveOneofFieldGenerator(field, options);
135 }
136 } else {
137 switch (field->cpp_type()) {
138 case FieldDescriptor::CPPTYPE_MESSAGE:
139 return new MessageFieldGenerator(field, options);
140 case FieldDescriptor::CPPTYPE_STRING:
141 switch (field->options().ctype()) {
142 default: // StringFieldGenerator handles unknown ctypes.
143 case FieldOptions::STRING:
144 return new StringFieldGenerator(field, options);
145 }
146 case FieldDescriptor::CPPTYPE_ENUM:
147 return new EnumFieldGenerator(field, options);
148 default:
149 return new PrimitiveFieldGenerator(field, options);
150 }
151 }
152 }
153
~FieldGeneratorMap()154 FieldGeneratorMap::~FieldGeneratorMap() {}
155
get(const FieldDescriptor * field) const156 const FieldGenerator& FieldGeneratorMap::get(
157 const FieldDescriptor* field) const {
158 GOOGLE_CHECK_EQ(field->containing_type(), descriptor_);
159 return *field_generators_[field->index()];
160 }
161
162
163 } // namespace cpp
164 } // namespace compiler
165 } // namespace protobuf
166 } // namespace google
167