from_json() [3/19]

template<typename BasicJsonType , typename ArithmeticType , enable_if_t< std::is_arithmetic< ArithmeticType >::value &&!std::is_same< ArithmeticType, typename BasicJsonType::number_unsigned_t >::value &&!std::is_same< ArithmeticType, typename BasicJsonType::number_integer_t >::value &&!std::is_same< ArithmeticType, typename BasicJsonType::number_float_t >::value &&!std::is_same< ArithmeticType, typename BasicJsonType::boolean_t >::value, int > = 0>

void nlohmann::detail::from_json	(	const BasicJsonType &	j,
		ArithmeticType &	val
	)

Definition at line 4203 of file json.hpp.

{
    switch (static_cast<value_t>(j))
    {
        case value_t::number_unsigned:
        {
            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_unsigned_t *>());
            break;
        }
 
        case value_t::number_integer:
        {
            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_integer_t *>());
            break;
        }
 
        case value_t::number_float:
        {
            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::number_float_t *>());
            break;
        }
 
        case value_t::boolean:
        {
            val = static_cast<ArithmeticType>(*j.template get_ptr<const typename BasicJsonType::boolean_t *>());
            break;
        }
 
        case value_t::null:
        case value_t::object:
        case value_t::array:
        case value_t::string:
        case value_t::binary:
        case value_t::discarded:
        default:
            JSON_THROW(type_error::create(302, "type must be number, but is " + std::string(j.type_name()), j));
    }
}