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add is_compatible_basic_json_type trait
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9b401972a0
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ee19acaf05
41
src/json.hpp
41
src/json.hpp
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@ -267,6 +267,19 @@ struct is_compatible_float_type
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std::is_floating_point<CompatibleFloat>::value;
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std::is_floating_point<CompatibleFloat>::value;
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};
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};
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template <typename T, typename BasicJson>
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struct is_compatible_basic_json_type
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{
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static auto constexpr value = disjunction<
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is_compatible_array_type<BasicJson, T>,
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is_compatible_object_type<typename BasicJson::object_t, T>,
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is_compatible_float_type<typename BasicJson::number_float_t, T>,
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is_compatible_integer_type<typename BasicJson::number_integer_t, T>,
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is_compatible_unsigned_integer_type<typename BasicJson::number_unsigned_t, T>,
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std::is_constructible<typename BasicJson::string_t, T>,
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std::is_same<typename BasicJson::boolean_t, T>>::value;
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};
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template <template <typename, typename> class JSONSerializer, typename Json,
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template <template <typename, typename> class JSONSerializer, typename Json,
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typename T>
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typename T>
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struct has_from_json
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struct has_from_json
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@ -1528,20 +1541,13 @@ class basic_json
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assert_invariant();
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assert_invariant();
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}
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}
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// constructor chosen when JSONSerializer::to_json exists for type T
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// constructor chosen when JSONSerializer::to_json exists for type T
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// first check avoids being chosen instead of move/copy constructor
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template <typename T, enable_if_t<detail::conjunction<detail::negation<std::is_same<uncvref_t<T>, basic_json_t>>,
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template <typename T, enable_if_t<detail::conjunction<detail::negation<std::is_same<uncvref_t<T>, basic_json_t>>,
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detail::negation<detail::disjunction<
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detail::negation<std::is_base_of<std::istream, uncvref_t<T>>>,
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detail::is_compatible_array_type<basic_json_t, uncvref_t<T>>,
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detail::negation<detail::is_compatible_basic_json_type<uncvref_t<T>, basic_json_t>>, detail::has_to_json<
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detail::is_compatible_object_type<object_t, uncvref_t<T>>,
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JSONSerializer, basic_json, uncvref_t<T>>>::value, int> = 0>
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detail::is_compatible_float_type<number_float_t, uncvref_t<T>>,
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detail::is_compatible_integer_type<number_integer_t, uncvref_t<T>>,
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detail::is_compatible_unsigned_integer_type<number_unsigned_t, uncvref_t<T>>,
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std::is_constructible<string_t, uncvref_t<T>>,
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std::is_base_of<std::istream, uncvref_t<T>>,
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std::is_same<boolean_t, uncvref_t<T>>>>,
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detail::has_to_json<
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JSONSerializer, basic_json, uncvref_t<T>>
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>::value, int> = 0>
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explicit basic_json(T &&val)
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explicit basic_json(T &&val)
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{
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{
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JSONSerializer<uncvref_t<T>>::to_json(*this, std::forward<T>(val));
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JSONSerializer<uncvref_t<T>>::to_json(*this, std::forward<T>(val));
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@ -3209,15 +3215,8 @@ detail::negation<detail::disjunction<
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}
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}
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template <typename T,
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template <typename T,
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enable_if_t<detail::has_from_json<
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enable_if_t<detail::conjunction<detail::negation<detail::is_compatible_basic_json_type<uncvref_t<T>, basic_json_t>>,
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JSONSerializer, basic_json, uncvref_t<T>>::value
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detail::has_from_json<JSONSerializer, basic_json_t, uncvref_t<T>>>::value, int> = 0>
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and not (detail::is_compatible_object_type<object_t, uncvref_t<T>>::value or
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detail::is_compatible_array_type<basic_json_t, uncvref_t<T>>::value or
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detail::is_compatible_float_type<number_float_t, uncvref_t<T>>::value or
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detail::is_compatible_integer_type<number_integer_t, uncvref_t<T>>::value or
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detail::is_compatible_unsigned_integer_type<number_unsigned_t, uncvref_t<T>>::value or
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std::is_constructible<string_t, uncvref_t<T>>::value or
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std::is_same<boolean_t, uncvref_t<T>>::value), int> = 0>
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auto get() const -> uncvref_t<T>
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auto get() const -> uncvref_t<T>
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{
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{
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using type = uncvref_t<T>;
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using type = uncvref_t<T>;
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