numeric.hpp

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#pragma once
 
#include <any>
#include <optional>
 
namespace nxpp::detail {
 
template <typename T>
std::optional<double> try_numeric_any_cast_as_double(const std::any& value) {
    if (const auto* typed_value = std::any_cast<T>(&value)) {
        return static_cast<double>(*typed_value);
    }
    return std::nullopt;
}
 
inline std::optional<double> try_numeric_any_cast(const std::any& value) {
    if (auto converted = try_numeric_any_cast_as_double<int>(value)) return converted;
    if (auto converted = try_numeric_any_cast_as_double<long>(value)) return converted;
    if (auto converted = try_numeric_any_cast_as_double<long long>(value)) return converted;
    if (auto converted = try_numeric_any_cast_as_double<unsigned int>(value)) return converted;
    if (auto converted = try_numeric_any_cast_as_double<unsigned long>(value)) return converted;
    if (auto converted = try_numeric_any_cast_as_double<unsigned long long>(value)) return converted;
    if (auto converted = try_numeric_any_cast_as_double<float>(value)) return converted;
    if (auto converted = try_numeric_any_cast_as_double<double>(value)) return converted;
    if (auto converted = try_numeric_any_cast_as_double<long double>(value)) return converted;
    return std::nullopt;
}
 
} // namespace nxpp::detail