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62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
/************************************************************************************
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*
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* D++, A Lightweight C++ library for Discord
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*
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* Copyright 2022 Craig Edwards and D++ contributors
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* (https://github.com/brainboxdotcc/DPP/graphs/contributors)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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************************************************************************************/
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#pragma once
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#include <dpp/export.h>
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#include <dpp/exception.h>
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#include <dpp/json_fwd.h>
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namespace dpp {
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/**
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* @brief Represents an interface for an object that can optionally implement functions
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* for converting to and from nlohmann::json. In the event either parse_from_json() or
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* build_json() are not implemented and are called, they will throw at runtime.
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*
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* @tparam T Type of class that implements the interface
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*/
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template<typename T> struct DPP_EXPORT json_interface {
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protected:
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/* Must not destruct through pointer to json_interface. */
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~json_interface() = default;
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public:
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/**
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* @brief Convert object from nlohmann::json
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*
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* @param j nlohmann::json object
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* @return T& Reference to self for fluent calling
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*/
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T& fill_from_json(nlohmann::json* j) {
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throw dpp::logic_exception("JSON interface doesn't implement parse_from_json");
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}
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/**
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* @brief Build JSON string from the object
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*
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* @param with_id Include the ID in the JSON
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* @return std::string JSON string version of object
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*/
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virtual std::string build_json(bool with_id = false) const {
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throw dpp::logic_exception("JSON interface doesn't implement build_json");
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}
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};
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};
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