1 // Copyright 2020 Google Inc. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 // 15 //////////////////////////////////////////////////////////////////////////////// 16 17 #include "json_proto_converter.h" 18 19 namespace json_proto { 20 AppendArray(const ArrayValue & array_value)21void JsonProtoConverter::AppendArray(const ArrayValue& array_value) { 22 data_ << '['; 23 bool need_comma = false; 24 for (const auto& value : array_value.value()) { 25 // Trailing comma inside of an array makes JSON invalid, avoid adding that. 26 if (need_comma) 27 data_ << ','; 28 else 29 need_comma = true; 30 31 AppendValue(value); 32 } 33 data_ << ']'; 34 } 35 AppendNumber(const NumberValue & number_value)36void JsonProtoConverter::AppendNumber(const NumberValue& number_value) { 37 if (number_value.has_float_value()) { 38 data_ << number_value.float_value().value(); 39 } else if (number_value.has_exponent_value()) { 40 auto value = number_value.exponent_value(); 41 data_ << value.base(); 42 data_ << (value.use_uppercase() ? 'E' : 'e'); 43 data_ << value.exponent(); 44 } else if (number_value.has_exponent_frac_value()) { 45 auto value = number_value.exponent_value(); 46 data_ << value.base(); 47 data_ << (value.use_uppercase() ? 'E' : 'e'); 48 data_ << value.exponent(); 49 } else { 50 data_ << number_value.integer_value().value(); 51 } 52 } 53 AppendObject(const JsonObject & json_object)54void JsonProtoConverter::AppendObject(const JsonObject& json_object) { 55 data_ << '{' << '"' << json_object.name() << '"' << ':'; 56 AppendValue(json_object.value()); 57 data_ << '}'; 58 } 59 AppendValue(const JsonValue & json_value)60void JsonProtoConverter::AppendValue(const JsonValue& json_value) { 61 if (json_value.has_object_value()) { 62 AppendObject(json_value.object_value()); 63 } else if (json_value.has_array_value()) { 64 AppendArray(json_value.array_value()); 65 } else if (json_value.has_number_value()) { 66 AppendNumber(json_value.number_value()); 67 } else if (json_value.has_string_value()) { 68 data_ << '"' << json_value.string_value().value() << '"'; 69 } else if (json_value.has_boolean_value()) { 70 data_ << (json_value.boolean_value().value() ? "true" : "false"); 71 } else { 72 data_ << "null"; 73 } 74 } 75 Convert(const JsonObject & json_object)76std::string JsonProtoConverter::Convert(const JsonObject& json_object) { 77 AppendObject(json_object); 78 return data_.str(); 79 } 80 Convert(const json_proto::ArrayValue & json_array)81std::string JsonProtoConverter::Convert( 82 const json_proto::ArrayValue& json_array) { 83 AppendArray(json_array); 84 return data_.str(); 85 } 86 87 } // namespace json_proto 88