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include/adclib/adclib_device.h

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+#pragma once
+
+/****************************************************************************************
+ *                          ABSTRACT DEVICE COMPONENTS LIBRARY                           *
+ ****************************************************************************************/
+
+#include <snipplib/containers/snplib_hmap.h>
+
+
+namespace adc
+{
+
+enum class adc_device_error_code_t : int { ERROR_OK, ERROR_RO_ATTR, ERROR_WO_ATTR, ERROR_ATTR_RANGE };
+
+}  // namespace adc
+
+namespace adc
+{
+
+
+template <std::formattable<char> ATTR_ID_T = std::string_view, std::formattable<char> CMD_ID_T = std::string_view>
+class adc_device_t
+{
+public:
+    typedef std::error_code error_t;
+
+    template <typename VT>
+    using op_result_t = std::expected<VT, error_t>;
+
+protected:
+    template <typename VT>
+    struct attr_t {
+        ATTR_ID_T id;
+        std::function<op_result_t<VT>()> getter;
+        std::function<void(VT const&)> setter;
+    };
+
+
+    struct attr_proxy_t {
+        template <typename VT>
+        VT get(ATTR_ID_T id)
+        {
+        }
+    };
+
+    std::unordered_map<CMD_ID_T, std::function<void()>> _commands{};
+    snplib::HeterogenMap<ATTR_ID_T> _attrs{};
+
+public:
+    adc_device_t() {}
+
+    template <snplib::snplib_callable_c ET>
+    void addCommand(CMD_ID_T id, ET&& exec_func)
+    {
+        _commands.emplace(std::move(id), std::forward<ET>(exec_func));
+    }
+
+    template <typename GT, typename ST>
+    void addAttr(ATTR_ID_T id, GT&& getter, ST&& setter)
+    {
+        // deduce attribute value type
+        using v_t = std::invoke_result_t<GT>;
+
+        static_assert(std::invocable<ST, v_t const&>, "Invalid setter type!");
+
+        _attrs.push(std::move(id), attr_t<v_t>{.getter = std::forward<GT>(getter), .setter = std::forward<ST>(setter)});
+    }
+};
+
+}  // namespace adc