Merge pull request #37 from OpenVicProject/add/dryad

Move to dryad library

7 files changed, 212 insertions, 0 deletions

diff --git a/include/openvic-dataloader/detail/utility/Concepts.hpp b/include/openvic-dataloader/detail/utility/Concepts.hpp
new file mode 100644
index 0000000..0ba91cc
--- /dev/null
+++ b/include/openvic-dataloader/detail/utility/Concepts.hpp
@@ -0,0 +1,45 @@
+#pragma once
+
+#include <concepts>
+#include <cstdint>
+#include <functional>
+#include <utility>
+
+namespace ovdl {
+	struct NodeLocation;
+	struct File;
+	namespace detail {
+		enum class buffer_error : std::uint8_t;
+	}
+}
+
+namespace ovdl::detail {
+	template<typename T, typename... Ts>
+	concept any_of = (std::same_as<T, Ts> || ...);
+
+	template<typename T>
+	concept HasCstr =
+		requires(T t) {
+			{ t.c_str() } -> std::same_as<const char*>;
+		};
+
+	template<typename T>
+	concept HasPath = requires(T& t) {
+		{ t.path() } -> std::same_as<const char*>;
+	};
+
+	template<typename T, typename Self, typename... Args>
+	concept LoadCallback =
+		requires(T&& t, Self&& self, Args&&... args) {
+			{ std::invoke(std::forward<T>(t), std::forward<Self>(self), std::forward<Args>(args)...) } -> std::same_as<ovdl::detail::buffer_error>;
+		};
+
+	template<typename T>
+	concept IsEncoding = requires(T t) {
+		typename T::char_type;
+		typename T::int_type;
+		{ T::template is_secondary_char_type<typename T::char_type>() } -> std::same_as<bool>;
+		{ T::eof() } -> std::same_as<typename T::int_type>;
+		{ T::to_int_type(typename T::char_type {}) } -> std::same_as<typename T::int_type>;
+	};
+}
\ No newline at end of file
diff --git a/include/openvic-dataloader/detail/utility/Constexpr.hpp b/include/openvic-dataloader/detail/utility/Constexpr.hpp
new file mode 100644
index 0000000..49479c5
--- /dev/null
+++ b/include/openvic-dataloader/detail/utility/Constexpr.hpp
@@ -0,0 +1,15 @@
+#pragma once
+
+// THANK YOU APPLE FOR YOUR UTTER DISREGARD FOR C++20
+
+#if __cpp_lib_optional >= 202106L
+#define OVDL_OPTIONAL_CONSTEXPR constexpr
+#else
+#define OVDL_OPTIONAL_CONSTEXPR inline
+#endif
+
+#if __cpp_lib_constexpr_vector >= 201907L
+#define OVDL_VECTOR_CONSTEXPR constexpr
+#else
+#define OVDL_VECTOR_CONSTEXPR inline
+#endif
\ No newline at end of file
diff --git a/include/openvic-dataloader/detail/utility/ErrorRange.hpp b/include/openvic-dataloader/detail/utility/ErrorRange.hpp
new file mode 100644
index 0000000..a427f6c
--- /dev/null
+++ b/include/openvic-dataloader/detail/utility/ErrorRange.hpp
@@ -0,0 +1,11 @@
+#pragma once
+
+#include <utility>
+
+#include <openvic-dataloader/Error.hpp>
+
+#include <dryad/node.hpp>
+
+namespace ovdl::detail {
+	using error_range = decltype(std::declval<const error::Root*>()->errors());
+}
\ No newline at end of file
diff --git a/include/openvic-dataloader/detail/utility/PointerHash.hpp b/include/openvic-dataloader/detail/utility/PointerHash.hpp
new file mode 100644
index 0000000..c0d28bc
--- /dev/null
+++ b/include/openvic-dataloader/detail/utility/PointerHash.hpp
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <cstdint>
+
+namespace ovdl::detail {
+	/* hash any pointer */
+	template<typename T>
+	struct PointerHash {
+		using type = T;
+		using ptr_type = T*;
+		using const_type = const T;
+		using const_ptr_type = const T*;
+		using const_ptr_const_type = const const_ptr_type;
+		constexpr std::size_t operator()(const_ptr_const_type pointer) const {
+			auto addr = reinterpret_cast<uintptr_t>(pointer);
+#if SIZE_MAX < UINTPTR_MAX
+			/* size_t is not large enough to hold the pointer’s memory address */
+			addr %= SIZE_MAX; /* truncate the address so it is small enough to fit in a size_t */
+#endif
+			return addr;
+		}
+	};
+}
\ No newline at end of file
diff --git a/include/openvic-dataloader/detail/utility/SelfType.hpp b/include/openvic-dataloader/detail/utility/SelfType.hpp
new file mode 100644
index 0000000..5209700
--- /dev/null
+++ b/include/openvic-dataloader/detail/utility/SelfType.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <type_traits>
+
+namespace ovdl::detail {
+#if !defined(_MSC_VER)
+#pragma GCC diagnostic push
+#pragma clang diagnostic ignored "-Wunknown-warning-option"
+#pragma GCC diagnostic ignored "-Wnon-template-friend"
+#endif
+	template<typename T>
+	struct Reader {
+		friend auto adl_GetSelfType(Reader<T>);
+	};
+
+	template<typename T, typename U>
+	struct Writer {
+		friend auto adl_GetSelfType(Reader<T>) { return U {}; }
+	};
+#if !defined(_MSC_VER)
+#pragma GCC diagnostic pop
+#endif
+
+	inline void adl_GetSelfType() {}
+
+	template<typename T>
+	using Read = std::remove_pointer_t<decltype(adl_GetSelfType(Reader<T> {}))>;
+}
diff --git a/include/openvic-dataloader/detail/utility/TypeName.hpp b/include/openvic-dataloader/detail/utility/TypeName.hpp
new file mode 100644
index 0000000..1a34a0f
--- /dev/null
+++ b/include/openvic-dataloader/detail/utility/TypeName.hpp
@@ -0,0 +1,52 @@
+#pragma once
+
+#include <array>
+#include <cstddef>
+#include <string_view>
+#include <utility>
+
+namespace ovdl::detail {
+
+	template<std::size_t... Idxs>
+	constexpr auto substring_as_array(std::string_view str, std::index_sequence<Idxs...>) {
+		return std::array { str[Idxs]... };
+	}
+
+	template<typename T>
+	constexpr auto type_name_array() {
+#if defined(__clang__)
+		constexpr auto prefix = std::string_view { "[T = " };
+		constexpr auto suffix = std::string_view { "]" };
+		constexpr auto function = std::string_view { __PRETTY_FUNCTION__ };
+#elif defined(__GNUC__)
+		constexpr auto prefix = std::string_view { "with T = " };
+		constexpr auto suffix = std::string_view { "]" };
+		constexpr auto function = std::string_view { __PRETTY_FUNCTION__ };
+#elif defined(_MSC_VER)
+		constexpr auto prefix = std::string_view { "type_name_array<" };
+		constexpr auto suffix = std::string_view { ">(void)" };
+		constexpr auto function = std::string_view { __FUNCSIG__ };
+#else
+#error Unsupported compiler
+#endif
+
+		constexpr auto start = function.find(prefix) + prefix.size();
+		constexpr auto end = function.rfind(suffix);
+
+		static_assert(start < end);
+
+		constexpr auto name = function.substr(start, (end - start));
+		return substring_as_array(name, std::make_index_sequence<name.size()> {});
+	}
+
+	template<typename T>
+	struct type_name_holder {
+		static inline constexpr auto value = type_name_array<T>();
+	};
+
+	template<typename T>
+	constexpr auto type_name() -> std::string_view {
+		constexpr auto& value = type_name_holder<T>::value;
+		return std::string_view { value.data(), value.size() };
+	}
+}
\ No newline at end of file
diff --git a/include/openvic-dataloader/detail/utility/Utility.hpp b/include/openvic-dataloader/detail/utility/Utility.hpp
new file mode 100644
index 0000000..138a029
--- /dev/null
+++ b/include/openvic-dataloader/detail/utility/Utility.hpp
@@ -0,0 +1,38 @@
+#pragma once
+
+#include <string_view>
+#include <type_traits>
+
+#include "openvic-dataloader/detail/utility/TypeName.hpp"
+
+namespace ovdl::detail {
+	[[noreturn]] inline void unreachable() {
+		// Uses compiler specific extensions if possible.
+		// Even if no extension is used, undefined behavior is still raised by
+		// an empty function body and the noreturn attribute.
+#ifdef __GNUC__ // GCC, Clang, ICC
+		__builtin_unreachable();
+#elif defined(_MSC_VER) // MSVC
+		__assume(false);
+#endif
+	}
+
+	template<typename Kind>
+	constexpr std::string_view get_kind_name() {
+		constexpr auto name = type_name<Kind>();
+
+		return name;
+	}
+
+	template<typename EnumT>
+		requires std::is_enum_v<EnumT>
+	constexpr std::underlying_type_t<EnumT> to_underlying(EnumT e) {
+		return static_cast<std::underlying_type_t<EnumT>>(e);
+	}
+
+	template<typename EnumT>
+		requires std::is_enum_v<EnumT>
+	constexpr EnumT from_underlying(std::underlying_type_t<EnumT> ut) {
+		return static_cast<EnumT>(ut);
+	}
+}
\ No newline at end of file