| 61 | } |
| 62 | |
| 63 | JsonExporter::ExpectedEntry JsonExporter::fromJson(const nlohmann::json& source) const |
| 64 | { |
| 65 | if(source.is_null()) |
| 66 | { |
| 67 | return Entry{ BT::Any(), BT::TypeInfo::Create<std::nullptr_t>() }; |
| 68 | } |
| 69 | |
| 70 | if(source.is_string()) |
| 71 | { |
| 72 | return Entry{ BT::Any(source.get<std::string>()), |
| 73 | BT::TypeInfo::Create<std::string>() }; |
| 74 | } |
| 75 | if(source.is_number_integer()) |
| 76 | { |
| 77 | return Entry{ BT::Any(source.get<int>()), BT::TypeInfo::Create<int>() }; |
| 78 | } |
| 79 | if(source.is_number_float()) |
| 80 | { |
| 81 | return Entry{ BT::Any(source.get<double>()), BT::TypeInfo::Create<double>() }; |
| 82 | } |
| 83 | if(source.is_boolean()) |
| 84 | { |
| 85 | return Entry{ BT::Any(source.get<bool>()), BT::TypeInfo::Create<bool>() }; |
| 86 | } |
| 87 | |
| 88 | // basic vectors |
| 89 | if(source.is_array() && source.size() > 0 && !source.contains("__type")) |
| 90 | { |
| 91 | const auto first_element = source[0]; |
| 92 | if(first_element.is_string()) |
| 93 | { |
| 94 | return Entry{ BT::Any(source.get<std::vector<std::string>>()), |
| 95 | BT::TypeInfo::Create<std::vector<std::string>>() }; |
| 96 | } |
| 97 | if(first_element.is_number_integer()) |
| 98 | { |
| 99 | return Entry{ BT::Any(source.get<std::vector<int>>()), |
| 100 | BT::TypeInfo::Create<std::vector<int>>() }; |
| 101 | } |
| 102 | if(first_element.is_number_float()) |
| 103 | { |
| 104 | return Entry{ BT::Any(source.get<std::vector<double>>()), |
| 105 | BT::TypeInfo::Create<std::vector<double>>() }; |
| 106 | } |
| 107 | if(first_element.is_boolean()) |
| 108 | { |
| 109 | return Entry{ BT::Any(source.get<std::vector<bool>>()), |
| 110 | BT::TypeInfo::Create<std::vector<bool>>() }; |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | if(source.is_array()) |
| 115 | { |
| 116 | if(source.empty()) |
| 117 | return nonstd::make_unexpected("Missing field '__type'"); |
| 118 | const auto& first = source[0]; |
| 119 | if(!first.is_object() || !first.contains("__type")) |
| 120 | return nonstd::make_unexpected("Missing field '__type'"); |