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Downcasting facility refactored so the user does not have to write the boilerplate code anymore

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Mateusz Pusz committed 2019-09-26 22:30:57 +02:00
1 parent ad69f338b8
commit 2e1ce83024
28 files changed
+348 -299
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test/unit_test/test_custom_units.cpp
+7 -21
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@@ -30,13 +30,13 @@ namespace {
struct base_dim_digital_information { static constexpr const char* value = "digital information"; };
struct digital_information : units::make_dimension_t<units::exp<base_dim_digital_information, 1>> {};
struct digital_information : units::derived_dimension<digital_information, units::exp<base_dim_digital_information, 1>> {};
template<typename T>
concept bool DigitalInformation = units::QuantityOf<T, digital_information>;
struct bit : units::unit<digital_information> {};
struct byte : units::unit<digital_information, units::ratio<8>> {};
struct bit : units::derived_unit<bit, digital_information> {};
struct byte : units::derived_unit<byte, digital_information, units::ratio<8>> {};
inline namespace literals {
@@ -49,10 +49,6 @@ namespace {
}
}
template<> struct units::downcast_traits<units::downcast_base_t<digital_information>> : std::type_identity<digital_information> {};
template<> struct units::downcast_traits<units::downcast_base_t<bit>> : std::type_identity<bit> {};
template<> struct units::downcast_traits<units::downcast_base_t<::byte>> : std::type_identity<::byte> {};
namespace {
static_assert(1_B == 8_b);
@@ -64,24 +60,14 @@ namespace {
using namespace units;
// power spectral density
struct power_spectral_density : make_dimension_t<units::exp<voltage, 2>, units::exp<frequency, -1>> {};
struct sq_volt_per_hertz : unit<power_spectral_density> {};
struct power_spectral_density : derived_dimension<power_spectral_density, units::exp<voltage, 2>, units::exp<frequency, -1>> {};
struct sq_volt_per_hertz : derived_unit<sq_volt_per_hertz, power_spectral_density> {};
// amplitude spectral density
struct amplitude_spectral_density : make_dimension_t<units::exp<voltage, 1>, units::exp<frequency, -1, 2>> {};
struct amplitude_spectral_density : derived_dimension<amplitude_spectral_density, units::exp<voltage, 1>, units::exp<frequency, -1, 2>> {};
// todo: add support for derived_unit
//struct volt_per_sq_hertz : derived_unit<amplitude_spectral_density, kilogram, metre, second, ampere> {};
struct volt_per_sqrt_hertz : unit<amplitude_spectral_density> {};
}
namespace units {
template<> struct downcast_traits<downcast_base_t<power_spectral_density>> : std::type_identity<power_spectral_density> {};
template<> struct downcast_traits<downcast_base_t<sq_volt_per_hertz>> : std::type_identity<sq_volt_per_hertz> {};
template<> struct downcast_traits<downcast_base_t<amplitude_spectral_density>> : std::type_identity<amplitude_spectral_density> {};
template<> struct downcast_traits<downcast_base_t<volt_per_sqrt_hertz>> : std::type_identity<volt_per_sqrt_hertz> {};
struct volt_per_sqrt_hertz : derived_unit<volt_per_sqrt_hertz, amplitude_spectral_density> {};
}
namespace {