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 47namespace google { 48namespace protobuf { 49namespace compiler { 50namespace cpp { 51 52using internal::WireFormat; 53 54void SetCommonFieldVariables(const FieldDescriptor* descriptor, 55 map<string, string>* variables, 56 const Options& options) { 57 (*variables)["name"] = FieldName(descriptor); 58 (*variables)["index"] = SimpleItoa(descriptor->index()); 59 (*variables)["number"] = SimpleItoa(descriptor->number()); 60 (*variables)["classname"] = ClassName(FieldScope(descriptor), false); 61 (*variables)["declared_type"] = DeclaredTypeMethodName(descriptor->type()); 62 63 (*variables)["tag_size"] = SimpleItoa( 64 WireFormat::TagSize(descriptor->number(), descriptor->type())); 65 (*variables)["deprecation"] = descriptor->options().deprecated() 66 ? " PROTOBUF_DEPRECATED" : ""; 67 68 (*variables)["cppget"] = "Get"; 69} 70 71FieldGenerator::~FieldGenerator() {} 72 73void FieldGenerator:: 74GenerateMergeFromCodedStreamWithPacking(io::Printer* printer) const { 75 // Reaching here indicates a bug. Cases are: 76 // - This FieldGenerator should support packing, but this method should be 77 // overridden. 78 // - This FieldGenerator doesn't support packing, and this method should 79 // never have been called. 80 GOOGLE_LOG(FATAL) << "GenerateMergeFromCodedStreamWithPacking() " 81 << "called on field generator that does not support packing."; 82 83} 84 85FieldGeneratorMap::FieldGeneratorMap(const Descriptor* descriptor, 86 const Options& options) 87 : descriptor_(descriptor), 88 field_generators_(new scoped_ptr<FieldGenerator>[descriptor->field_count()]) { 89 // Construct all the FieldGenerators. 90 for (int i = 0; i < descriptor->field_count(); i++) { 91 field_generators_[i].reset(MakeGenerator(descriptor->field(i), options)); 92 } 93} 94 95FieldGenerator* FieldGeneratorMap::MakeGenerator(const FieldDescriptor* field, 96 const Options& options) { 97 if (field->is_repeated()) { 98 switch (field->cpp_type()) { 99 case FieldDescriptor::CPPTYPE_MESSAGE: 100 return new RepeatedMessageFieldGenerator(field, options); 101 case FieldDescriptor::CPPTYPE_STRING: 102 switch (field->options().ctype()) { 103 default: // RepeatedStringFieldGenerator handles unknown ctypes. 104 case FieldOptions::STRING: 105 return new RepeatedStringFieldGenerator(field, options); 106 } 107 case FieldDescriptor::CPPTYPE_ENUM: 108 return new RepeatedEnumFieldGenerator(field, options); 109 default: 110 return new RepeatedPrimitiveFieldGenerator(field, options); 111 } 112 } else { 113 switch (field->cpp_type()) { 114 case FieldDescriptor::CPPTYPE_MESSAGE: 115 return new MessageFieldGenerator(field, options); 116 case FieldDescriptor::CPPTYPE_STRING: 117 switch (field->options().ctype()) { 118 default: // StringFieldGenerator handles unknown ctypes. 119 case FieldOptions::STRING: 120 return new StringFieldGenerator(field, options); 121 } 122 case FieldDescriptor::CPPTYPE_ENUM: 123 return new EnumFieldGenerator(field, options); 124 default: 125 return new PrimitiveFieldGenerator(field, options); 126 } 127 } 128} 129 130FieldGeneratorMap::~FieldGeneratorMap() {} 131 132const FieldGenerator& FieldGeneratorMap::get( 133 const FieldDescriptor* field) const { 134 GOOGLE_CHECK_EQ(field->containing_type(), descriptor_); 135 return *field_generators_[field->index()]; 136} 137 138 139} // namespace cpp 140} // namespace compiler 141} // namespace protobuf 142} // namespace google 143