1 // Protocol Buffers - Google's data interchange format
2 // Copyright 2008 Google Inc. All rights reserved.
3 // http://code.google.com/p/protobuf/
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 <google/protobuf/compiler/cpp/cpp_helpers.h>
37 #include <google/protobuf/compiler/cpp/cpp_primitive_field.h>
38 #include <google/protobuf/compiler/cpp/cpp_string_field.h>
39 #include <google/protobuf/compiler/cpp/cpp_enum_field.h>
40 #include <google/protobuf/compiler/cpp/cpp_message_field.h>
41 #include <google/protobuf/descriptor.pb.h>
42 #include <google/protobuf/wire_format.h>
43 #include <google/protobuf/io/printer.h>
44 #include <google/protobuf/stubs/common.h>
45 #include <google/protobuf/stubs/strutil.h>
46
47 namespace google {
48 namespace protobuf {
49 namespace compiler {
50 namespace cpp {
51
52 using internal::WireFormat;
53
SetCommonFieldVariables(const FieldDescriptor * descriptor,map<string,string> * variables)54 void SetCommonFieldVariables(const FieldDescriptor* descriptor,
55 map<string, string>* variables) {
56 (*variables)["name"] = FieldName(descriptor);
57 (*variables)["index"] = SimpleItoa(descriptor->index());
58 (*variables)["number"] = SimpleItoa(descriptor->number());
59 (*variables)["classname"] = ClassName(FieldScope(descriptor), false);
60 (*variables)["declared_type"] = DeclaredTypeMethodName(descriptor->type());
61
62 (*variables)["tag_size"] = SimpleItoa(
63 WireFormat::TagSize(descriptor->number(), descriptor->type()));
64 (*variables)["deprecation"] = descriptor->options().deprecated()
65 ? " PROTOBUF_DEPRECATED" : "";
66
67 }
68
~FieldGenerator()69 FieldGenerator::~FieldGenerator() {}
70
71 void FieldGenerator::
GenerateMergeFromCodedStreamWithPacking(io::Printer * printer) const72 GenerateMergeFromCodedStreamWithPacking(io::Printer* printer) const {
73 // Reaching here indicates a bug. Cases are:
74 // - This FieldGenerator should support packing, but this method should be
75 // overridden.
76 // - This FieldGenerator doesn't support packing, and this method should
77 // never have been called.
78 GOOGLE_LOG(FATAL) << "GenerateMergeFromCodedStreamWithPacking() "
79 << "called on field generator that does not support packing.";
80
81 }
82
FieldGeneratorMap(const Descriptor * descriptor)83 FieldGeneratorMap::FieldGeneratorMap(const Descriptor* descriptor)
84 : descriptor_(descriptor),
85 field_generators_(
86 new scoped_ptr<FieldGenerator>[descriptor->field_count()]) {
87 // Construct all the FieldGenerators.
88 for (int i = 0; i < descriptor->field_count(); i++) {
89 field_generators_[i].reset(MakeGenerator(descriptor->field(i)));
90 }
91 }
92
MakeGenerator(const FieldDescriptor * field)93 FieldGenerator* FieldGeneratorMap::MakeGenerator(const FieldDescriptor* field) {
94 if (field->is_repeated()) {
95 switch (field->cpp_type()) {
96 case FieldDescriptor::CPPTYPE_MESSAGE:
97 return new RepeatedMessageFieldGenerator(field);
98 case FieldDescriptor::CPPTYPE_STRING:
99 switch (field->options().ctype()) {
100 default: // RepeatedStringFieldGenerator handles unknown ctypes.
101 case FieldOptions::STRING:
102 return new RepeatedStringFieldGenerator(field);
103 }
104 case FieldDescriptor::CPPTYPE_ENUM:
105 return new RepeatedEnumFieldGenerator(field);
106 default:
107 return new RepeatedPrimitiveFieldGenerator(field);
108 }
109 } else {
110 switch (field->cpp_type()) {
111 case FieldDescriptor::CPPTYPE_MESSAGE:
112 return new MessageFieldGenerator(field);
113 case FieldDescriptor::CPPTYPE_STRING:
114 switch (field->options().ctype()) {
115 default: // StringFieldGenerator handles unknown ctypes.
116 case FieldOptions::STRING:
117 return new StringFieldGenerator(field);
118 }
119 case FieldDescriptor::CPPTYPE_ENUM:
120 return new EnumFieldGenerator(field);
121 default:
122 return new PrimitiveFieldGenerator(field);
123 }
124 }
125 }
126
~FieldGeneratorMap()127 FieldGeneratorMap::~FieldGeneratorMap() {}
128
get(const FieldDescriptor * field) const129 const FieldGenerator& FieldGeneratorMap::get(
130 const FieldDescriptor* field) const {
131 GOOGLE_CHECK_EQ(field->containing_type(), descriptor_);
132 return *field_generators_[field->index()];
133 }
134
135
136 } // namespace cpp
137 } // namespace compiler
138 } // namespace protobuf
139 } // namespace google
140