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 (at) 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 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 69 FieldGenerator::~FieldGenerator() {} 70 71 void FieldGenerator:: 72 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 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 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 } 126 127 FieldGeneratorMap::~FieldGeneratorMap() {} 128 129 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
