| // Copyright 2019 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "json_serializer.h" |
| |
| #include <nlohmann/json.hpp> |
| |
| namespace { |
| |
| struct NullDeserializer : public dap::Deserializer { |
| static NullDeserializer instance; |
| |
| bool deserialize(dap::boolean*) const override { return false; } |
| bool deserialize(dap::integer*) const override { return false; } |
| bool deserialize(dap::number*) const override { return false; } |
| bool deserialize(dap::string*) const override { return false; } |
| bool deserialize(dap::object*) const override { return false; } |
| bool deserialize(dap::any*) const override { return false; } |
| size_t count() const override { return 0; } |
| bool array(const std::function<bool(dap::Deserializer*)>&) const override { |
| return false; |
| } |
| bool field(const std::string&, |
| const std::function<bool(dap::Deserializer*)>&) const override { |
| return false; |
| } |
| }; |
| |
| NullDeserializer NullDeserializer::instance; |
| |
| } // anonymous namespace |
| |
| namespace dap { |
| namespace json { |
| |
| Deserializer::Deserializer(const std::string& str) |
| : json(new nlohmann::json(nlohmann::json::parse(str))), ownsJson(true) {} |
| |
| Deserializer::Deserializer(const nlohmann::json* json) |
| : json(json), ownsJson(false) {} |
| |
| Deserializer::~Deserializer() { |
| if (ownsJson) { |
| delete json; |
| } |
| } |
| |
| bool Deserializer::deserialize(dap::boolean* v) const { |
| if (!json->is_boolean()) { |
| return false; |
| } |
| *v = json->get<bool>(); |
| return true; |
| } |
| |
| bool Deserializer::deserialize(dap::integer* v) const { |
| if (!json->is_number_integer()) { |
| return false; |
| } |
| *v = json->get<int>(); |
| return true; |
| } |
| |
| bool Deserializer::deserialize(dap::number* v) const { |
| if (!json->is_number()) { |
| return false; |
| } |
| *v = json->get<double>(); |
| return true; |
| } |
| |
| bool Deserializer::deserialize(dap::string* v) const { |
| if (!json->is_string()) { |
| return false; |
| } |
| *v = json->get<std::string>(); |
| return true; |
| } |
| |
| bool Deserializer::deserialize(dap::object* v) const { |
| v->reserve(json->size()); |
| for (auto& el : json->items()) { |
| Deserializer d(&el.value()); |
| dap::any val; |
| if (!d.deserialize(&val)) { |
| return false; |
| } |
| (*v)[el.key()] = val; |
| } |
| return true; |
| } |
| |
| bool Deserializer::deserialize(dap::any* v) const { |
| if (json->is_boolean()) { |
| *v = dap::boolean(json->get<bool>()); |
| } else if (json->is_number_float()) { |
| *v = dap::number(json->get<double>()); |
| } else if (json->is_number_integer()) { |
| *v = dap::integer(json->get<int>()); |
| } else if (json->is_string()) { |
| *v = json->get<std::string>(); |
| } else if (json->is_null()) { |
| *v = null(); |
| } else { |
| return false; |
| } |
| return true; |
| } |
| |
| size_t Deserializer::count() const { |
| return json->size(); |
| } |
| |
| bool Deserializer::array( |
| const std::function<bool(dap::Deserializer*)>& cb) const { |
| if (!json->is_array()) { |
| return false; |
| } |
| for (size_t i = 0; i < json->size(); i++) { |
| Deserializer d(&(*json)[i]); |
| if (!cb(&d)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool Deserializer::field( |
| const std::string& name, |
| const std::function<bool(dap::Deserializer*)>& cb) const { |
| if (!json->is_structured()) { |
| return false; |
| } |
| auto it = json->find(name); |
| if (it == json->end()) { |
| return cb(&NullDeserializer::instance); |
| } |
| auto obj = *it; |
| Deserializer d(&obj); |
| return cb(&d); |
| } |
| |
| Serializer::Serializer() : json(new nlohmann::json()), ownsJson(true) {} |
| |
| Serializer::Serializer(nlohmann::json* json) : json(json), ownsJson(false) {} |
| |
| Serializer::~Serializer() { |
| if (ownsJson) { |
| delete json; |
| } |
| } |
| |
| std::string Serializer::dump() const { |
| return json->dump(); |
| } |
| |
| bool Serializer::serialize(dap::boolean v) { |
| *json = (bool)v; |
| return true; |
| } |
| |
| bool Serializer::serialize(dap::integer v) { |
| *json = (int)v; |
| return true; |
| } |
| |
| bool Serializer::serialize(dap::number v) { |
| *json = (double)v; |
| return true; |
| } |
| |
| bool Serializer::serialize(const dap::string& v) { |
| *json = v; |
| return true; |
| } |
| |
| bool Serializer::serialize(const dap::object& v) { |
| for (auto& it : v) { |
| Serializer s(&(*json)[it.first]); |
| if (!s.serialize(it.second)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool Serializer::serialize(const dap::any& v) { |
| if (v.is<dap::boolean>()) { |
| *json = (bool)v.get<dap::boolean>(); |
| } else if (v.is<dap::integer>()) { |
| *json = (int)v.get<dap::integer>(); |
| } else if (v.is<dap::number>()) { |
| *json = (double)v.get<dap::number>(); |
| } else if (v.is<dap::string>()) { |
| *json = v.get<dap::string>(); |
| } else if (v.is<dap::null>()) { |
| } else { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool Serializer::array(size_t count, |
| const std::function<bool(dap::Serializer*)>& cb) { |
| *json = std::vector<int>(); |
| for (size_t i = 0; i < count; i++) { |
| Serializer s(&(*json)[i]); |
| if (!cb(&s)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool Serializer::fields(const void* object, |
| const std::initializer_list<Field>& fields) { |
| *json = nlohmann::json({}, false, nlohmann::json::value_t::object); |
| for (auto const& f : fields) { |
| if (!field(f.name, [&](dap::Serializer* d) { |
| auto ptr = reinterpret_cast<const uint8_t*>(object) + f.offset; |
| return f.type->serialize(d, ptr); |
| })) |
| return false; |
| } |
| return true; |
| } |
| |
| bool Serializer::field(const std::string& name, |
| const std::function<bool(dap::Serializer*)>& cb) { |
| Serializer s(&(*json)[name]); |
| auto res = cb(&s); |
| if (s.removed) { |
| json->erase(name); |
| } |
| return res; |
| } |
| |
| void Serializer::remove() { |
| removed = true; |
| } |
| |
| } // namespace json |
| } // namespace dap |