104 lines
3.6 KiB
C++
104 lines
3.6 KiB
C++
/*
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__ _____ _____ _____
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__| | __| | | | JSON for Modern C++ (test suite)
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| | |__ | | | | | | version 3.10.5
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|_____|_____|_____|_|___| https://github.com/nlohmann/json
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Licensed under the MIT License <http://opensource.org/licenses/MIT>.
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SPDX-License-Identifier: MIT
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Copyright (c) 2013-2022 Niels Lohmann <http://nlohmann.me>.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "doctest_compatibility.h"
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#include <nlohmann/json.hpp>
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using nlohmann::json;
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/// A wrapped integer
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template<typename T>
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class wrapped_int
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{
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T m_val;
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public:
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operator T() const
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{
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return m_val;
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}
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wrapped_int() = default;
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explicit wrapped_int(T val) : m_val(val) {}
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// allow implicit conversions from any builtin types that `T` allows conversions from
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template<typename T2,
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typename = typename std::enable_if<std::is_convertible<T2, T>::value && std::is_arithmetic<T2>::value>::type>
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wrapped_int(T2 val) : m_val(val) {}
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bool operator==(const wrapped_int& other) const
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{
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return static_cast<T>(*this) == static_cast<T>(other);
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}
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bool operator<(const int& other) const
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{
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return static_cast<T>(*this) < other;
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}
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wrapped_int operator+(const wrapped_int& other) const
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{
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return static_cast<T>(*this) + static_cast<T>(other);
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}
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bool operator%(const wrapped_int& other) const
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{
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return static_cast<T>(*this) % static_cast<T>(other);
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}
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wrapped_int& operator/=(const wrapped_int& other)
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{
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m_val /= static_cast<T>(other);
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return *this;
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}
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bool operator<(const wrapped_int& other) const
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{
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return static_cast<T>(*this) < static_cast<T>(other);
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}
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bool operator<=(const wrapped_int& other) const
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{
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return static_cast<T>(*this) <= static_cast<T>(other);
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}
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};
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template<typename T> class std::numeric_limits<wrapped_int<T>>
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{
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public:
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static constexpr bool is_specialized = std::numeric_limits<T>::is_specialized;
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static constexpr bool is_signed = std::numeric_limits<T>::is_signed;
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static constexpr bool is_integer = std::numeric_limits<T>::is_integer;
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};
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TEST_CASE("custom integer types")
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{
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using my_json = nlohmann::basic_json <
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std::map, std::vector, std::string, bool,
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wrapped_int<std::int64_t>, wrapped_int<std::uint64_t>, double, std::allocator >;
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std::string data = "[1,2,-3,-4]";
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my_json as_json = my_json::parse(data.begin(), data.end());
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wrapped_int<std::uint64_t> i1 = as_json[1];
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wrapped_int<std::int64_t> i2 = as_json[2];
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CHECK(i1 == wrapped_int<std::uint64_t>(2u));
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CHECK(i2 == wrapped_int<std::int64_t>(-3));
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}
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