686 lines
23 KiB
C++
686 lines
23 KiB
C++
#pragma once
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/*
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ABSTRACT DEVICE COMPONENTS LIBRARY
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*/
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#include <system_error>
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#include <unordered_map>
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#include "../common/adc_traits.h"
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#include "../common/adc_utils.h"
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// #include "../common/adc_value.h"
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namespace adc
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{
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namespace constants
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{
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static constexpr std::tuple<bool,
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char,
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short,
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int,
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long,
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long long,
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unsigned char,
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unsigned short,
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unsigned int,
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unsigned long,
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unsigned long long,
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float,
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double,
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long double>
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AdcDefaultTrivialConvTypes{};
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} // namespace constants
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namespace traits
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{
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/* concepts */
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// attribute setter concept
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template <typename T>
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concept adc_attr_getter_c = std::is_null_pointer_v<T> ||
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(traits::adc_func_traits<T>::arity == 0 && !std::same_as<traits::adc_retval_t<T>, void>);
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// attribute setter concept
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template <typename T>
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concept adc_attr_setter_c = std::is_null_pointer_v<T> || (traits::adc_func_traits<T>::arity == 1);
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// internal-to-user and user-to-internal type conversional function concept
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template <typename T>
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concept adc_attr_convfunc_c = std::is_null_pointer_v<T> ||
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(traits::adc_func_traits<T>::arity == 1 && !std::same_as<traits::adc_retval_t<T>, void>);
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// deduce attribute type from getter and setter functions signatures
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template <adc_attr_getter_c GT, adc_attr_setter_c ST>
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using attr_value_t = std::decay_t<
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std::conditional_t<std::is_null_pointer_v<GT>,
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std::conditional_t<std::is_null_pointer_v<ST>, std::nullptr_t, traits::adc_func_arg1_t<ST>>,
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traits::adc_retval_t<GT>>>;
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// deduce attribute internal type from conversional functions signatures
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template <adc_attr_convfunc_c FromFuncT, adc_attr_convfunc_c ToFuncT>
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using attr_internal_t = std::decay_t<std::conditional_t<
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std::is_null_pointer_v<ToFuncT>,
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std::conditional_t<std::is_null_pointer_v<FromFuncT>, std::nullptr_t, traits::adc_retval_t<FromFuncT>>,
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traits::adc_retval_t<ToFuncT>>>;
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// deduce user-defined type from conversional functions signatures
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template <adc_attr_convfunc_c FromFuncT, adc_attr_convfunc_c ToFuncT>
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using attr_user_t = std::decay_t<std::conditional_t<
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std::is_null_pointer_v<FromFuncT>,
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std::conditional_t<std::is_null_pointer_v<ToFuncT>, std::nullptr_t, traits::adc_retval_t<ToFuncT>>,
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traits::adc_retval_t<FromFuncT>>>;
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// attribute serializer function concept
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template <typename T, typename VT>
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concept adc_serializer_c =
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std::is_null_pointer_v<T> || (std::invocable<T, const VT&> && !std::same_as<void, traits::adc_retval_t<T>>);
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// attribute deserializer function concept
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template <typename T, typename VT>
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concept adc_deserializer_c = std::is_null_pointer_v<T> || (traits::adc_func_traits<T>::arity == 1 &&
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std::convertible_to<traits::adc_retval_t<T>, VT>);
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template <typename SRT, typename DSRT>
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using adc_attr_serialized_t = std::decay_t<
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std::conditional_t<std::is_null_pointer_v<SRT>,
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std::conditional_t<std::is_null_pointer_v<DSRT>, std::nullptr_t, traits::adc_func_arg1_t<DSRT>>,
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traits::adc_retval_t<SRT>>>;
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} // namespace traits
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// error codes
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enum class AdcDeviceAttributeErrorCode : int {
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ERROR_OK,
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ERROR_NO_CONV_FUNC,
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ERROR_INTERNAL_TYPE_MISMATCH,
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ERROR_READ_ONLY,
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ERROR_WRITE_ONLY,
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ERROR_INVALID_SERIALIZED_TYPE,
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ERROR_NO_SERIALIZER,
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ERROR_NO_DESERIALIZER
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};
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} // namespace adc
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namespace std
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{
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template <>
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class is_error_code_enum<adc::AdcDeviceAttributeErrorCode> : public true_type
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{
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};
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} // namespace std
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namespace adc
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{
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// error category
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struct AdcDeviceAttributeErrorCategory : public std::error_category {
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AdcDeviceAttributeErrorCategory() : std::error_category() {}
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const char* name() const noexcept
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{
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return "ADC_DEVICE_ATTRIBUTE_CATEGORY";
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}
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std::string message(int ec) const
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{
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AdcDeviceAttributeErrorCode err = static_cast<AdcDeviceAttributeErrorCode>(ec);
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switch (err) {
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case AdcDeviceAttributeErrorCode::ERROR_OK:
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return "OK";
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case AdcDeviceAttributeErrorCode::ERROR_NO_CONV_FUNC:
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return "conversion function is not defined";
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case AdcDeviceAttributeErrorCode::ERROR_INTERNAL_TYPE_MISMATCH:
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return "try to setup default conversion function for invalid type (internal type mismatch)";
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case AdcDeviceAttributeErrorCode::ERROR_READ_ONLY:
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return "device attribute is read-only";
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case AdcDeviceAttributeErrorCode::ERROR_WRITE_ONLY:
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return "device attribute is write-only";
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case AdcDeviceAttributeErrorCode::ERROR_INVALID_SERIALIZED_TYPE:
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return "invalid user-passed serialized type";
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case AdcDeviceAttributeErrorCode::ERROR_NO_SERIALIZER:
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return "serializing function was not defined";
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case AdcDeviceAttributeErrorCode::ERROR_NO_DESERIALIZER:
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return "deserializing function was not defined";
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default:
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return "UNKNOWN";
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}
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}
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static const AdcDeviceAttributeErrorCategory& get()
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{
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static const AdcDeviceAttributeErrorCategory constInst;
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return constInst;
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}
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};
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inline std::error_code make_error_code(AdcDeviceAttributeErrorCode ec)
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{
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return std::error_code(static_cast<int>(ec), AdcDeviceAttributeErrorCategory::get());
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}
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template <typename IdentT>
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class AdcDeviceAttribute
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{
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protected:
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template <typename T>
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using ret_value_t = std::decay_t<traits::adc_retval_t<T>>;
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template <typename VT>
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inline static std::unordered_map<const AdcDeviceAttribute*, std::function<VT()>> _getterFunc{};
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template <typename VT>
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inline static std::unordered_map<const AdcDeviceAttribute*, std::function<void(const VT&)>> _setterFunc{};
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template <typename SerializedT>
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inline static std::unordered_map<const AdcDeviceAttribute*, std::function<SerializedT()>> _serializerFunc{};
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template <typename SerializedT>
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inline static std::unordered_map<const AdcDeviceAttribute*, std::function<void(const SerializedT&)>>
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_deserializerFunc{};
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std::function<void()> _clearFunc;
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std::function<void(AdcDeviceAttribute*)> _copyFunc;
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std::function<void(AdcDeviceAttribute*)> _moveFunc;
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public:
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typedef IdentT ident_t;
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typedef std::string default_serialized_t;
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enum AccessType { ReadOnly, WriteOnly, ReadWrite };
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/* CONSTRUCTORS AND DESTRUCTOR */
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template <traits::adc_attr_getter_c GT,
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traits::adc_attr_setter_c ST,
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typename ValueT = traits::attr_value_t<GT, ST>,
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traits::adc_serializer_c<ValueT> SRT =
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decltype(utils::AdcDefaultValueConverter<>::serialize<default_serialized_t, ValueT>),
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traits::adc_deserializer_c<ValueT> DSRT =
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decltype(utils::AdcDefaultValueConverter<>::deserialize<ValueT, default_serialized_t>)>
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AdcDeviceAttribute(
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const IdentT& ident,
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GT&& getter,
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ST&& setter,
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SRT&& serializer = utils::AdcDefaultValueConverter<>::serialize<default_serialized_t, ValueT>,
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DSRT&& deserializer = utils::AdcDefaultValueConverter<>::deserialize<ValueT, default_serialized_t>)
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: _ident(ident), _accessType(AdcDeviceAttribute::ReadWrite)
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{
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static_assert(!std::is_null_pointer_v<ValueT>, "Getter and Setter can not be nullptr simultaneously!!!");
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using SerializedT = traits::adc_attr_serialized_t<SRT, DSRT>;
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static_assert(!std::is_null_pointer_v<SerializedT>, "Deduced serialized type must not be std::nullptr_t!!!");
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_getterFunc<ValueT>.emplace(this, std::forward<GT>(getter));
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_setterFunc<ValueT>.emplace(this, std::forward<ST>(setter));
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if constexpr (std::is_null_pointer_v<GT>) {
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_accessType = AdcDeviceAttribute::WriteOnly;
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}
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if constexpr (std::is_null_pointer_v<ST>) {
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_accessType = AdcDeviceAttribute::ReadOnly;
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}
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if constexpr (!std::is_null_pointer_v<GT> && !std::is_null_pointer_v<SRT>) {
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_serializerFunc<SerializedT>[this] = [wrapper = traits::adc_pf_wrapper(std::forward<SRT>(serializer)),
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this]() {
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auto& serializer = std::get<0>(wrapper);
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auto val = _getterFunc<ValueT>[this]();
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return serializer(val);
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};
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}
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if constexpr (!std::is_null_pointer_v<ST> && !std::is_null_pointer_v<DSRT>) {
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_deserializerFunc<SerializedT>[this] = [wrapper = traits::adc_pf_wrapper(std::forward<DSRT>(deserializer)),
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this](const SerializedT& sval) {
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auto& deserializer = std::get<0>(wrapper);
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ValueT val = deserializer(sval);
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_setterFunc<ValueT>[this](val);
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};
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}
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_clearFunc = [this]() {
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_getterFunc<ValueT>.erase(this);
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_setterFunc<ValueT>.erase(this);
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_serializerFunc<SerializedT>.erase(this);
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_deserializerFunc<SerializedT>.erase(this);
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};
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// copy TO other
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_copyFunc = [this](AdcDeviceAttribute* other) {
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_getterFunc<ValueT>.emplace(other, _getterFunc<ValueT>[this]);
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_setterFunc<ValueT>.emplace(other, _setterFunc<ValueT>[this]);
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_serializerFunc<SerializedT>.emplace(other, _serializerFunc<SerializedT>[this]);
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_deserializerFunc<SerializedT>.emplace(other, _deserializerFunc<SerializedT>[this]);
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};
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// move TO other
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_moveFunc = [this](AdcDeviceAttribute* other) {
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_getterFunc<ValueT>.emplace(other, std::move(_getterFunc<ValueT>[this]));
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_setterFunc<ValueT>.emplace(other, std::move(_setterFunc<ValueT>[this]));
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_serializerFunc<SerializedT>.emplace(other, std::move(_serializerFunc<SerializedT>[this]));
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_deserializerFunc<SerializedT>.emplace(other, std::move(_deserializerFunc<SerializedT>[this]));
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};
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}
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template <traits::adc_tuple_like TupleT,
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traits::adc_attr_getter_c GT,
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traits::adc_attr_setter_c ST,
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typename ValueT = traits::attr_value_t<GT, ST>,
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traits::adc_serializer_c<ValueT> SRT =
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decltype(utils::AdcDefaultValueConverter<>::serialize<default_serialized_t, ValueT>),
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traits::adc_deserializer_c<ValueT> DSRT =
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decltype(utils::AdcDefaultValueConverter<>::deserialize<ValueT, default_serialized_t>)>
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AdcDeviceAttribute(
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const IdentT& ident,
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TupleT&&,
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GT&& getter,
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ST&& setter,
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SRT&& serializer = utils::AdcDefaultValueConverter<>::serialize<default_serialized_t, ValueT>,
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DSRT&& deserializer = utils::AdcDefaultValueConverter<>::deserialize<ValueT, default_serialized_t>)
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: AdcDeviceAttribute(ident,
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std::forward<GT>(getter),
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std::forward<ST>(setter),
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std::forward<SRT>(serializer),
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std::forward<DSRT>(deserializer))
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{
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static_assert(!std::is_null_pointer_v<ValueT>, "Getter and Setter can not be nullptr simultaneously!!!");
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AdcDeviceAttribute::setupTrivialConvertFunc<ValueT, std::decay_t<TupleT>>();
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}
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// read-only attribute constructor
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template <std::invocable GT,
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typename ValueT = ret_value_t<GT>,
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traits::adc_serializer_c<ValueT> SRT =
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decltype(utils::AdcDefaultValueConverter<>::serialize<default_serialized_t, ValueT>),
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typename SerializedT = ret_value_t<SRT>>
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AdcDeviceAttribute(const IdentT& ident,
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GT&& getter,
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SRT&& serializer = utils::AdcDefaultValueConverter<>::serialize<default_serialized_t, ValueT>)
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: AdcDeviceAttribute(ident, std::forward<GT>(getter), nullptr, std::forward<SRT>(serializer), nullptr)
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{
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}
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template <traits::adc_tuple_like TupleT,
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std::invocable GT,
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typename ValueT = ret_value_t<GT>,
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traits::adc_serializer_c<ValueT> SRT =
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decltype(utils::AdcDefaultValueConverter<>::serialize<default_serialized_t, ValueT>),
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typename SerializedT = ret_value_t<SRT>>
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AdcDeviceAttribute(const IdentT& ident,
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TupleT&&,
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GT&& getter,
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SRT&& serializer = utils::AdcDefaultValueConverter<>::serialize<default_serialized_t, ValueT>)
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: AdcDeviceAttribute(ident, TupleT{}, std::forward<GT>(getter), nullptr, std::forward<SRT>(serializer), nullptr)
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{
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}
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// write-only attribute constructor
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template <traits::adc_attr_setter_c ST,
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typename ValueT = std::decay_t<traits::adc_func_arg1_t<ST>>,
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typename DSRT = decltype(utils::AdcDefaultValueConverter<>::deserialize<ValueT, default_serialized_t>),
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typename SerializedT = std::decay_t<traits::adc_func_arg1_t<DSRT>>>
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AdcDeviceAttribute(const IdentT& ident,
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ST&& setter,
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DSRT&& deserializer = utils::AdcDefaultValueConverter<>::deserialize<ValueT, SerializedT>)
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: AdcDeviceAttribute(ident, nullptr, std::forward<ST>(setter), nullptr, std::forward<DSRT>(deserializer))
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{
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}
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template <traits::adc_tuple_like TupleT,
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traits::adc_attr_setter_c ST,
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typename ValueT = std::decay_t<traits::adc_func_arg1_t<ST>>,
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typename DSRT = decltype(utils::AdcDefaultValueConverter<>::deserialize<ValueT, default_serialized_t>),
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typename SerializedT = std::decay_t<traits::adc_func_arg1_t<DSRT>>>
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AdcDeviceAttribute(const IdentT& ident,
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TupleT&&,
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ST&& setter,
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DSRT&& deserializer = utils::AdcDefaultValueConverter<>::deserialize<ValueT, SerializedT>)
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: AdcDeviceAttribute(ident,
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TupleT{},
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nullptr,
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std::forward<ST>(setter),
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nullptr,
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std::forward<DSRT>(deserializer))
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{
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}
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AdcDeviceAttribute(const AdcDeviceAttribute& other)
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{
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_clearFunc();
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other._copyFunc(this);
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_clearFunc = other._clearFunc;
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_copyFunc = other._copyFunc;
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_moveFunc = other._moveFunc;
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}
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AdcDeviceAttribute(AdcDeviceAttribute&& other)
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{
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_clearFunc();
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other._moveFunc(this);
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_clearFunc = std::move(other._clearFunc);
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_copyFunc = std::move(other._copyFunc);
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_moveFunc = std::move(other._moveFunc);
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}
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virtual ~AdcDeviceAttribute()
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{
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_clearFunc();
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}
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/* PUBLIC METHODS */
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IdentT ident() const
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{
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return _ident;
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}
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AccessType accessType() const
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{
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return _accessType;
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}
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template <traits::adc_attr_convfunc_c FromFuncT, traits::adc_attr_convfunc_c ToFuncT>
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AdcDeviceAttribute& addConvertFunc(FromFuncT&& func_from_internal, ToFuncT&& func_to_internal)
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{
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// using value_t = ret_value_t<ToFuncT>; // it must be internal value type
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// using user_t = ret_value_t<FromFuncT>;
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using value_t = traits::attr_internal_t<FromFuncT, ToFuncT>;
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using user_t = traits::attr_user_t<FromFuncT, ToFuncT>;
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static_assert(!std::is_null_pointer_v<value_t>,
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"Deduced attribute internal type must not be std::nullptr_t!!!");
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static_assert(!std::is_null_pointer_v<user_t>, "Deduced user-defined type must not be std::nullptr_t!!!");
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try {
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if (_accessType != AdcDeviceAttribute::WriteOnly) {
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auto& getter = _getterFunc<value_t>.at(this); // throw out_of_range if value_t is invalid
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_getterFunc<user_t>[this] =
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[&getter, wrapper = traits::adc_pf_wrapper(std::forward<FromFuncT>(func_from_internal)), this]() {
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auto val = getter();
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return std::get<0>(wrapper)(val); // convert from internal type
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};
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} // ignore "from_internal" conversional function for write-only attribute
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if (_accessType != AdcDeviceAttribute::ReadOnly) {
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auto& setter = _setterFunc<value_t>.at(this); // throw out_of_range if value_t is invalid
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_setterFunc<user_t>[this] = [&setter,
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wrapper = traits::adc_pf_wrapper(std::forward<ToFuncT>(func_to_internal)),
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this](const user_t& val) {
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value_t value = std::get<0>(wrapper)(val); // convert to internal type
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setter(value);
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};
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} // ignore "to_internal" conversional function for read-only attribute
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} catch (const std::out_of_range&) {
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throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_INTERNAL_TYPE_MISMATCH);
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}
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_clearFunc = [prev_clear = _clearFunc, this]() {
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prev_clear();
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_getterFunc<user_t>.erase(this);
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_setterFunc<user_t>.erase(this);
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};
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// copy TO other
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_copyFunc = [prev_copy = _copyFunc, this](AdcDeviceAttribute* other) {
|
|
prev_copy(other);
|
|
|
|
_getterFunc<user_t>.emplace(other, _getterFunc<user_t>[this]);
|
|
_setterFunc<user_t>.emplace(other, _setterFunc<user_t>[this]);
|
|
};
|
|
|
|
// move TO other
|
|
_moveFunc = [prev_move = _moveFunc, this](AdcDeviceAttribute* other) {
|
|
prev_move(other);
|
|
|
|
_getterFunc<user_t>.emplace(other, std::move(_getterFunc<user_t>[this]));
|
|
_setterFunc<user_t>.emplace(other, std::move(_setterFunc<user_t>[this]));
|
|
};
|
|
|
|
return *this;
|
|
}
|
|
|
|
template <typename UT>
|
|
operator UT() const
|
|
{
|
|
if (_accessType == WriteOnly) {
|
|
throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_WRITE_ONLY);
|
|
}
|
|
|
|
using val_t = std::decay_t<UT>;
|
|
|
|
try {
|
|
return _getterFunc<val_t>.at(this)();
|
|
} catch (const std::out_of_range&) {
|
|
throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_NO_CONV_FUNC);
|
|
}
|
|
|
|
// auto& getter = _getterFunc<val_t>[this];
|
|
// if (getter) {
|
|
// return getter();
|
|
// }
|
|
|
|
// throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_NO_CONV_FUNC);
|
|
}
|
|
|
|
template <typename UT>
|
|
AdcDeviceAttribute& operator=(UT&& val)
|
|
{
|
|
if (_accessType == ReadOnly) {
|
|
throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_READ_ONLY);
|
|
}
|
|
|
|
using val_t = std::decay_t<UT>;
|
|
|
|
try {
|
|
_setterFunc<val_t>.at(this)(std::forward<UT>(val));
|
|
} catch (const std::out_of_range&) {
|
|
throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_NO_CONV_FUNC);
|
|
}
|
|
|
|
// auto& setter = _setterFunc<val_t>[this];
|
|
// if (setter) {
|
|
// setter(std::forward<UT>(val));
|
|
// } else {
|
|
// throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_NO_CONV_FUNC);
|
|
// }
|
|
|
|
return *this;
|
|
}
|
|
|
|
|
|
AdcDeviceAttribute& operator=(const AdcDeviceAttribute& other)
|
|
{
|
|
if (&other != this) {
|
|
_clearFunc();
|
|
|
|
other._copyFunc(this);
|
|
|
|
_clearFunc = other._clearFunc;
|
|
_copyFunc = other._copyFunc;
|
|
_moveFunc = other._moveFunc;
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
|
|
AdcDeviceAttribute& operator=(AdcDeviceAttribute&& other)
|
|
{
|
|
if (&other != this) {
|
|
_clearFunc();
|
|
|
|
other._moveFunc(this);
|
|
|
|
_clearFunc = std::move(other._clearFunc);
|
|
_copyFunc = std::move(other._copyFunc);
|
|
_moveFunc = std::move(other._moveFunc);
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
template <typename SerializedT>
|
|
SerializedT serialize()
|
|
{
|
|
if (_accessType == AdcDeviceAttribute::WriteOnly) {
|
|
throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_WRITE_ONLY);
|
|
}
|
|
|
|
using s_t = std::decay_t<SerializedT>;
|
|
|
|
try {
|
|
_serializerFunc<s_t>.at(this)();
|
|
} catch (const std::out_of_range&) {
|
|
throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_INVALID_SERIALIZED_TYPE);
|
|
} catch (const std::bad_function_call&) { // serializer was not defined in ctor!
|
|
throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_NO_SERIALIZER);
|
|
}
|
|
|
|
// auto& serializer = _serializerFunc<s_t>[this];
|
|
|
|
// if (serializer) {
|
|
// return serializer();
|
|
// }
|
|
|
|
// throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_INVALID_SERIALIZED_TYPE);
|
|
}
|
|
|
|
default_serialized_t serialize()
|
|
{
|
|
return serialize<default_serialized_t>();
|
|
}
|
|
|
|
template <typename SerializedT>
|
|
AdcDeviceAttribute& deserialize(const SerializedT& sval)
|
|
{
|
|
if (_accessType == AdcDeviceAttribute::ReadOnly) {
|
|
throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_READ_ONLY);
|
|
}
|
|
|
|
using s_t = std::decay_t<SerializedT>;
|
|
|
|
try {
|
|
_deserializerFunc<s_t>.at(this)(sval);
|
|
} catch (const std::out_of_range&) {
|
|
throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_INVALID_SERIALIZED_TYPE);
|
|
} catch (const std::bad_function_call&) { // deserializer was not defined in ctor!
|
|
throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_NO_DESERIALIZER);
|
|
}
|
|
|
|
// auto& deserializer = _deserializerFunc<s_t>[this];
|
|
// if (deserializer) {
|
|
// deserializer(sval);
|
|
// } else {
|
|
// throw std::system_error(AdcDeviceAttributeErrorCode::ERROR_INVALID_SERIALIZED_TYPE);
|
|
// }
|
|
|
|
return *this;
|
|
}
|
|
|
|
|
|
/* some usefull factory functions */
|
|
|
|
template <typename... CtorArgTs>
|
|
static AdcDeviceAttribute makeArithAttr(const IdentT& ident, CtorArgTs... ctor_args)
|
|
{
|
|
return AdcDeviceAttribute{ident, constants::AdcDefaultTrivialConvTypes, std::forward<CtorArgTs>(ctor_args)...};
|
|
}
|
|
|
|
protected:
|
|
IdentT _ident;
|
|
AccessType _accessType;
|
|
|
|
|
|
template <typename VT, size_t I, typename TupleT>
|
|
void setupTrivialConvertFuncImpl()
|
|
{
|
|
if constexpr (I < std::tuple_size_v<TupleT>) {
|
|
using elem_t = std::tuple_element_t<I, TupleT>;
|
|
|
|
if constexpr (!std::is_same_v<VT, elem_t>) {
|
|
addConvertFunc([](const VT& v) { return static_cast<elem_t>(v); },
|
|
[](const elem_t& v) { return static_cast<VT>(v); });
|
|
}
|
|
|
|
setupTrivialConvertFuncImpl<VT, I + 1, TupleT>();
|
|
}
|
|
}
|
|
|
|
template <typename VT, typename TupleT>
|
|
void setupTrivialConvertFunc()
|
|
{
|
|
setupTrivialConvertFuncImpl<VT, 0, TupleT>();
|
|
}
|
|
};
|
|
|
|
|
|
} // namespace adc
|