diff options
-rw-r--r-- | CMakeLists.txt | 17 | ||||
-rw-r--r-- | cwd/shaders/face.fs | 4 | ||||
-rw-r--r-- | depedencies/include/mpark/config.hpp | 69 | ||||
-rw-r--r-- | depedencies/include/mpark/in_place.hpp | 35 | ||||
-rw-r--r-- | depedencies/include/mpark/lib.hpp | 453 | ||||
-rw-r--r-- | depedencies/include/mpark/variant.hpp | 1827 | ||||
-rw-r--r-- | src/Nbt.hpp (renamed from include/Nbt.hpp) | 0 | ||||
-rw-r--r-- | src/Utility.hpp (renamed from include/Utility.hpp) | 0 | ||||
-rw-r--r-- | src/Vector.hpp (renamed from include/Vector.hpp) | 0 | ||||
-rw-r--r-- | src/core/AssetManager.cpp | 2 | ||||
-rw-r--r-- | src/core/AssetManager.hpp (renamed from include/AssetManager.hpp) | 0 | ||||
-rw-r--r-- | src/core/Core.cpp | 4 | ||||
-rw-r--r-- | src/core/Core.hpp (renamed from include/Core.hpp) | 6 | ||||
-rw-r--r-- | src/core/Event.cpp | 76 | ||||
-rw-r--r-- | src/core/Event.hpp | 96 | ||||
-rw-r--r-- | src/graphics/Gui.hpp (renamed from include/graphics/Gui.hpp) | 1 | ||||
-rw-r--r-- | src/graphics/RenderSection.cpp | 18 | ||||
-rw-r--r-- | src/graphics/RenderSection.hpp (renamed from include/graphics/RenderSection.hpp) | 2 | ||||
-rw-r--r-- | src/graphics/Shader.hpp (renamed from include/graphics/Shader.hpp) | 0 | ||||
-rw-r--r-- | src/graphics/Texture.hpp (renamed from include/graphics/Texture.hpp) | 0 | ||||
-rw-r--r-- | src/graphics/Widget.hpp (renamed from include/graphics/Widget.hpp) | 0 | ||||
-rw-r--r-- | src/main.cpp | 5 | ||||
-rw-r--r-- | src/network/Network.cpp | 8 | ||||
-rw-r--r-- | src/network/Network.hpp (renamed from include/network/Network.hpp) | 0 | ||||
-rw-r--r-- | src/network/NetworkClient.hpp (renamed from include/network/NetworkClient.hpp) | 0 | ||||
-rw-r--r-- | src/network/Packet.hpp (renamed from include/network/Packet.hpp) | 0 | ||||
-rw-r--r-- | src/network/Socket.hpp (renamed from include/network/Socket.hpp) | 0 | ||||
-rw-r--r-- | src/network/Stream.hpp (renamed from include/network/Stream.hpp) | 0 | ||||
-rw-r--r-- | src/world/Block.hpp (renamed from include/world/Block.hpp) | 0 | ||||
-rw-r--r-- | src/world/Collision.hpp (renamed from include/world/Collision.hpp) | 0 | ||||
-rw-r--r-- | src/world/GameState.cpp | 2 | ||||
-rw-r--r-- | src/world/GameState.hpp (renamed from include/GameState.hpp) | 0 | ||||
-rw-r--r-- | src/world/Section.cpp | 55 | ||||
-rw-r--r-- | src/world/Section.hpp (renamed from include/world/Section.hpp) | 0 | ||||
-rw-r--r-- | src/world/World.hpp (renamed from include/world/World.hpp) | 0 |
35 files changed, 2616 insertions, 64 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 33affa0..5c5afaa 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -1,27 +1,18 @@ -cmake_minimum_required(VERSION 3.0) +cmake_minimum_required(VERSION 3.8) project(AltCraft) -set(CMAKE_CXX_STANDARD 14) +set(CMAKE_CXX_STANDARD 17) set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake) ########## # SOURCES ########## -#[[set(SRC_CORE src/core/Core.cpp src/core/AssetManager.cpp) -set(SRC_GRAPHICS src/graphics/Texture.cpp src/graphics/Shader.cpp src/graphics/RenderSection.cpp src/graphics/Gui.cpp - src/graphics/Widget.cpp) -set(SRC_NBT include/Nbt.hpp) -set(SRC_NETWORK src/network/Network.cpp src/network/NetworkClient.cpp src/network/Socket.cpp src/network/Stream.cpp) -set(SRC_WORLD src/world/Block.cpp src/world/Section.cpp src/world/World.cpp src/world/Collision.cpp - src/world/GameState.cpp)*# - -set(SOURCE_FILES src/main.cpp ${SRC_CORE} ${SRC_GRAPHICS} ${SRC_NETWORK} ${SRC_WORLD})]]# file(GLOB_RECURSE SOURCES "./src/*.cpp") -file(GLOB_RECURSE HEADERS "./include/*.hpp") +file(GLOB_RECURSE HEADERS "./src/*.hpp") add_executable(AltCraft ${HEADERS} ${SOURCES}) -target_include_directories(AltCraft PUBLIC include/) +target_include_directories(AltCraft PUBLIC src/) ################ # CONFIGURATION diff --git a/cwd/shaders/face.fs b/cwd/shaders/face.fs index d132d7e..3c9904c 100644 --- a/cwd/shaders/face.fs +++ b/cwd/shaders/face.fs @@ -43,10 +43,6 @@ void main() { if (gl_FragColor.a < 0.3) discard; vec3 hsvColor = rgb2hsv(gl_FragColor.xyz); - /*hsvColor[0]+=fs_in.Color; - hsvColor[1]=0.63; - hsvColor[2]+=0.1;*/ hsvColor+=fs_in.Color; gl_FragColor = vec4(hsv2rgb(hsvColor),1); - //gl_FragColor = vec4(fs_in.Color,1); }
\ No newline at end of file diff --git a/depedencies/include/mpark/config.hpp b/depedencies/include/mpark/config.hpp new file mode 100644 index 0000000..b5706b2 --- /dev/null +++ b/depedencies/include/mpark/config.hpp @@ -0,0 +1,69 @@ +// MPark.Variant +// +// Copyright Michael Park, 2015-2017 +// +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) + +#ifndef MPARK_CONFIG_HPP +#define MPARK_CONFIG_HPP + +// MSVC 2015 Update 3. +#if __cplusplus < 201103L && (!defined(_MSC_VER) || _MSC_FULL_VER < 190024215) +#error "MPark.Variant requires C++11 support." +#endif + +#ifndef __has_builtin +#define __has_builtin(x) 0 +#endif + +#ifndef __has_include +#define __has_include(x) 0 +#endif + +#ifndef __has_feature +#define __has_feature(x) 0 +#endif + +#if __has_builtin(__builtin_addressof) || \ + (defined(__GNUC__) && __GNUC__ >= 7) || defined(_MSC_VER) +#define MPARK_BUILTIN_ADDRESSOF +#endif + +#if __has_builtin(__type_pack_element) +#define MPARK_TYPE_PACK_ELEMENT +#endif + +#if defined(__cpp_constexpr) && __cpp_constexpr >= 201304 +#define MPARK_CPP14_CONSTEXPR +#endif + +#if __has_feature(cxx_exceptions) || defined(__cpp_exceptions) +#define MPARK_EXCEPTIONS +#endif + +#if defined(__cpp_generic_lambdas) || defined(_MSC_VER) +#define MPARK_GENERIC_LAMBDAS +#endif + +#if defined(__cpp_lib_integer_sequence) +#define MPARK_INTEGER_SEQUENCE +#endif + +#if defined(__cpp_return_type_deduction) || defined(_MSC_VER) +#define MPARK_RETURN_TYPE_DEDUCTION +#endif + +#if defined(__cpp_lib_transparent_operators) || defined(_MSC_VER) +#define MPARK_TRANSPARENT_OPERATORS +#endif + +#if defined(__cpp_variable_templates) || defined(_MSC_VER) +#define MPARK_VARIABLE_TEMPLATES +#endif + +#if !defined(__GLIBCXX__) || __has_include(<codecvt>) // >= libstdc++-5 +#define MPARK_TRIVIALITY_TYPE_TRAITS +#endif + +#endif // MPARK_CONFIG_HPP diff --git a/depedencies/include/mpark/in_place.hpp b/depedencies/include/mpark/in_place.hpp new file mode 100644 index 0000000..56cae13 --- /dev/null +++ b/depedencies/include/mpark/in_place.hpp @@ -0,0 +1,35 @@ +// MPark.Variant +// +// Copyright Michael Park, 2015-2017 +// +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) + +#ifndef MPARK_IN_PLACE_HPP +#define MPARK_IN_PLACE_HPP + +#include <cstddef> + +#include "config.hpp" + +namespace mpark { + + struct in_place_t { explicit in_place_t() = default; }; + + template <std::size_t I> + struct in_place_index_t { explicit in_place_index_t() = default; }; + + template <typename T> + struct in_place_type_t { explicit in_place_type_t() = default; }; + +#ifdef MPARK_VARIABLE_TEMPLATES + constexpr in_place_t in_place{}; + + template <std::size_t I> constexpr in_place_index_t<I> in_place_index{}; + + template <typename T> constexpr in_place_type_t<T> in_place_type{}; +#endif + +} // namespace mpark + +#endif // MPARK_IN_PLACE_HPP diff --git a/depedencies/include/mpark/lib.hpp b/depedencies/include/mpark/lib.hpp new file mode 100644 index 0000000..bba58d8 --- /dev/null +++ b/depedencies/include/mpark/lib.hpp @@ -0,0 +1,453 @@ +// MPark.Variant +// +// Copyright Michael Park, 2015-2017 +// +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) + +#ifndef MPARK_LIB_HPP +#define MPARK_LIB_HPP + +#include <memory> +#include <functional> +#include <type_traits> +#include <utility> + +#include "config.hpp" + +#define RETURN(...) \ + noexcept(noexcept(__VA_ARGS__)) -> decltype(__VA_ARGS__) { \ + return __VA_ARGS__; \ + } + +namespace mpark { + namespace lib { + template <typename T> + struct identity { using type = T; }; + + inline namespace cpp14 { + template <typename T, std::size_t N> + struct array { + constexpr const T &operator[](std::size_t index) const { + return data[index]; + } + + T data[N == 0 ? 1 : N]; + }; + + template <typename T> + using add_pointer_t = typename std::add_pointer<T>::type; + + template <typename... Ts> + using common_type_t = typename std::common_type<Ts...>::type; + + template <typename T> + using decay_t = typename std::decay<T>::type; + + template <bool B, typename T = void> + using enable_if_t = typename std::enable_if<B, T>::type; + + template <typename T> + using remove_const_t = typename std::remove_const<T>::type; + + template <typename T> + using remove_reference_t = typename std::remove_reference<T>::type; + + template <typename T> + inline constexpr T &&forward(remove_reference_t<T> &t) noexcept { + return static_cast<T &&>(t); + } + + template <typename T> + inline constexpr T &&forward(remove_reference_t<T> &&t) noexcept { + static_assert(!std::is_lvalue_reference<T>::value, + "can not forward an rvalue as an lvalue"); + return static_cast<T &&>(t); + } + + template <typename T> + inline constexpr remove_reference_t<T> &&move(T &&t) noexcept { + return static_cast<remove_reference_t<T> &&>(t); + } + +#ifdef MPARK_INTEGER_SEQUENCE + template <typename T, T... Is> + using integer_sequence = std::integer_sequence<T, Is...>; + + template <std::size_t... Is> + using index_sequence = std::index_sequence<Is...>; + + template <std::size_t N> + using make_index_sequence = std::make_index_sequence<N>; + + template <typename... Ts> + using index_sequence_for = std::index_sequence_for<Ts...>; +#else + template <typename T, T... Is> + struct integer_sequence { + using value_type = T; + static constexpr std::size_t size() noexcept { return sizeof...(Is); } + }; + + template <std::size_t... Is> + using index_sequence = integer_sequence<std::size_t, Is...>; + + template <typename Lhs, typename Rhs> + struct make_index_sequence_concat; + + template <std::size_t... Lhs, std::size_t... Rhs> + struct make_index_sequence_concat<index_sequence<Lhs...>, + index_sequence<Rhs...>> + : identity<index_sequence<Lhs..., (sizeof...(Lhs) + Rhs)...>> {}; + + template <std::size_t N> + struct make_index_sequence_impl; + + template <std::size_t N> + using make_index_sequence = typename make_index_sequence_impl<N>::type; + + template <std::size_t N> + struct make_index_sequence_impl + : make_index_sequence_concat<make_index_sequence<N / 2>, + make_index_sequence<N - (N / 2)>> {}; + + template <> + struct make_index_sequence_impl<0> : identity<index_sequence<>> {}; + + template <> + struct make_index_sequence_impl<1> : identity<index_sequence<0>> {}; + + template <typename... Ts> + using index_sequence_for = make_index_sequence<sizeof...(Ts)>; +#endif + + // <functional> +#ifdef MPARK_TRANSPARENT_OPERATORS + using equal_to = std::equal_to<>; +#else + struct equal_to { + template <typename Lhs, typename Rhs> + inline constexpr auto operator()(Lhs &&lhs, Rhs &&rhs) const + RETURN(lib::forward<Lhs>(lhs) == lib::forward<Rhs>(rhs)) + }; +#endif + +#ifdef MPARK_TRANSPARENT_OPERATORS + using not_equal_to = std::not_equal_to<>; +#else + struct not_equal_to { + template <typename Lhs, typename Rhs> + inline constexpr auto operator()(Lhs &&lhs, Rhs &&rhs) const + RETURN(lib::forward<Lhs>(lhs) != lib::forward<Rhs>(rhs)) + }; +#endif + +#ifdef MPARK_TRANSPARENT_OPERATORS + using less = std::less<>; +#else + struct less { + template <typename Lhs, typename Rhs> + inline constexpr auto operator()(Lhs &&lhs, Rhs &&rhs) const + RETURN(lib::forward<Lhs>(lhs) < lib::forward<Rhs>(rhs)) + }; +#endif + +#ifdef MPARK_TRANSPARENT_OPERATORS + using greater = std::greater<>; +#else + struct greater { + template <typename Lhs, typename Rhs> + inline constexpr auto operator()(Lhs &&lhs, Rhs &&rhs) const + RETURN(lib::forward<Lhs>(lhs) > lib::forward<Rhs>(rhs)) + }; +#endif + +#ifdef MPARK_TRANSPARENT_OPERATORS + using less_equal = std::less_equal<>; +#else + struct less_equal { + template <typename Lhs, typename Rhs> + inline constexpr auto operator()(Lhs &&lhs, Rhs &&rhs) const + RETURN(lib::forward<Lhs>(lhs) <= lib::forward<Rhs>(rhs)) + }; +#endif + +#ifdef MPARK_TRANSPARENT_OPERATORS + using greater_equal = std::greater_equal<>; +#else + struct greater_equal { + template <typename Lhs, typename Rhs> + inline constexpr auto operator()(Lhs &&lhs, Rhs &&rhs) const + RETURN(lib::forward<Lhs>(lhs) >= lib::forward<Rhs>(rhs)) + }; +#endif + } // namespace cpp14 + + inline namespace cpp17 { + + // <type_traits> + template <bool B> + using bool_constant = std::integral_constant<bool, B>; + + template <typename...> + struct voider : identity<void> {}; + + template <typename... Ts> + using void_t = typename voider<Ts...>::type; + + namespace detail { + namespace swappable { + + using std::swap; + + template <typename T> + struct is_swappable_impl { + private: + template <typename U, + typename = decltype(swap(std::declval<U &>(), + std::declval<U &>()))> + inline static std::true_type test(int); + + template <typename U> + inline static std::false_type test(...); + + public: + using type = decltype(test<T>(0)); + }; + + template <typename T> + using is_swappable = typename is_swappable_impl<T>::type; + + template <typename T, bool = is_swappable<T>::value> + struct is_nothrow_swappable { + static constexpr bool value = + noexcept(swap(std::declval<T &>(), std::declval<T &>())); + }; + + template <typename T> + struct is_nothrow_swappable<T, false> : std::false_type {}; + + } // namespace swappable + } // namespace detail + + template <typename T> + using is_swappable = detail::swappable::is_swappable<T>; + + template <typename T> + using is_nothrow_swappable = detail::swappable::is_nothrow_swappable<T>; + + // <functional> +#ifdef _MSC_VER +#pragma warning(push) +#pragma warning(disable : 4100) +#endif + template <typename F, typename... As> + inline constexpr auto invoke(F &&f, As &&... as) + RETURN(lib::forward<F>(f)(lib::forward<As>(as)...)) +#ifdef _MSC_VER +#pragma warning(pop) +#endif + + template <typename B, typename T, typename D> + inline constexpr auto invoke(T B::*pmv, D &&d) + RETURN(lib::forward<D>(d).*pmv) + + template <typename Pmv, typename Ptr> + inline constexpr auto invoke(Pmv pmv, Ptr &&ptr) + RETURN((*lib::forward<Ptr>(ptr)).*pmv) + + template <typename B, typename T, typename D, typename... As> + inline constexpr auto invoke(T B::*pmf, D &&d, As &&... as) + RETURN((lib::forward<D>(d).*pmf)(lib::forward<As>(as)...)) + + template <typename Pmf, typename Ptr, typename... As> + inline constexpr auto invoke(Pmf pmf, Ptr &&ptr, As &&... as) + RETURN(((*lib::forward<Ptr>(ptr)).*pmf)(lib::forward<As>(as)...)) + + namespace detail { + + template <typename Void, typename, typename...> + struct invoke_result {}; + + template <typename F, typename... Args> + struct invoke_result<void_t<decltype(lib::invoke( + std::declval<F>(), std::declval<Args>()...))>, + F, + Args...> + : identity<decltype( + lib::invoke(std::declval<F>(), std::declval<Args>()...))> {}; + + } // namespace detail + + template <typename F, typename... Args> + using invoke_result = detail::invoke_result<void, F, Args...>; + + template <typename F, typename... Args> + using invoke_result_t = typename invoke_result<F, Args...>::type; + + namespace detail { + + template <typename Void, typename, typename...> + struct is_invocable : std::false_type {}; + + template <typename F, typename... Args> + struct is_invocable<void_t<invoke_result_t<F, Args...>>, F, Args...> + : std::true_type {}; + + template <typename Void, typename, typename, typename...> + struct is_invocable_r : std::false_type {}; + + template <typename R, typename F, typename... Args> + struct is_invocable_r<void_t<invoke_result_t<F, Args...>>, + R, + F, + Args...> + : std::is_convertible<invoke_result_t<F, Args...>, R> {}; + + } // namespace detail + + template <typename F, typename... Args> + using is_invocable = detail::is_invocable<void, F, Args...>; + + template <typename R, typename F, typename... Args> + using is_invocable_r = detail::is_invocable_r<void, R, F, Args...>; + + // <memory> +#ifdef MPARK_BUILTIN_ADDRESSOF + template <typename T> + inline constexpr T *addressof(T &arg) { + return __builtin_addressof(arg); + } +#else + namespace detail { + + namespace has_addressof_impl { + + struct fail; + + template <typename T> + inline fail operator&(T &&); + + template <typename T> + inline static constexpr bool impl() { + return (std::is_class<T>::value || std::is_union<T>::value) && + !std::is_same<decltype(&std::declval<T &>()), fail>::value; + } + + } // namespace has_addressof_impl + + template <typename T> + using has_addressof = bool_constant<has_addressof_impl::impl<T>()>; + + template <typename T> + inline constexpr T *addressof(T &arg, std::true_type) { + return std::addressof(arg); + } + + template <typename T> + inline constexpr T *addressof(T &arg, std::false_type) { + return &arg; + } + + } // namespace detail + + template <typename T> + inline constexpr T *addressof(T &arg) { + return detail::addressof(arg, detail::has_addressof<T>{}); + } +#endif + + template <typename T> + inline constexpr T *addressof(const T &&) = delete; + + } // namespace cpp17 + + template <typename T> + struct remove_all_extents : identity<T> {}; + + template <typename T, std::size_t N> + struct remove_all_extents<array<T, N>> : remove_all_extents<T> {}; + + template <typename T> + using remove_all_extents_t = typename remove_all_extents<T>::type; + + template <std::size_t N> + using size_constant = std::integral_constant<std::size_t, N>; + + template <bool... Bs> + using bool_sequence = integer_sequence<bool, Bs...>; + + template <std::size_t I, typename T> + struct indexed_type : size_constant<I>, identity<T> {}; + + template <bool... Bs> + using all = + std::is_same<bool_sequence<true, Bs...>, bool_sequence<Bs..., true>>; + +#ifdef MPARK_TYPE_PACK_ELEMENT + template <std::size_t I, typename... Ts> + using type_pack_element_t = __type_pack_element<I, Ts...>; +#else + template <std::size_t I, typename... Ts> + struct type_pack_element_impl { + private: + template <typename> + struct set; + + template <std::size_t... Is> + struct set<index_sequence<Is...>> : indexed_type<Is, Ts>... {}; + + template <typename T> + inline static std::enable_if<true, T> impl(indexed_type<I, T>); + + inline static std::enable_if<false> impl(...); + + public: + using type = decltype(impl(set<index_sequence_for<Ts...>>{})); + }; + + template <std::size_t I, typename... Ts> + using type_pack_element = typename type_pack_element_impl<I, Ts...>::type; + + template <std::size_t I, typename... Ts> + using type_pack_element_t = typename type_pack_element<I, Ts...>::type; +#endif + +#ifdef MPARK_TRIVIALITY_TYPE_TRAITS + template <typename T> + using is_trivially_copy_constructible = + std::is_trivially_copy_constructible<T>; + + template <typename T> + using is_trivially_move_constructible = + std::is_trivially_move_constructible<T>; + + template <typename T> + using is_trivially_copy_assignable = std::is_trivially_copy_assignable<T>; + + template <typename T> + using is_trivially_move_assignable = std::is_trivially_move_assignable<T>; +#else + template <typename T> + struct is_trivially_copy_constructible + : bool_constant< + std::is_copy_constructible<T>::value && __has_trivial_copy(T)> {}; + + template <typename T> + struct is_trivially_move_constructible : bool_constant<__is_trivial(T)> {}; + + template <typename T> + struct is_trivially_copy_assignable + : bool_constant< + std::is_copy_assignable<T>::value && __has_trivial_assign(T)> {}; + + template <typename T> + struct is_trivially_move_assignable : bool_constant<__is_trivial(T)> {}; +#endif + + } // namespace lib +} // namespace mpark + +#undef RETURN + +#endif // MPARK_LIB_HPP diff --git a/depedencies/include/mpark/variant.hpp b/depedencies/include/mpark/variant.hpp new file mode 100644 index 0000000..3faecba --- /dev/null +++ b/depedencies/include/mpark/variant.hpp @@ -0,0 +1,1827 @@ +// MPark.Variant +// +// Copyright Michael Park, 2015-2017 +// +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) + +#ifndef MPARK_VARIANT_HPP +#define MPARK_VARIANT_HPP + +/* + variant synopsis + +namespace std { + + // 20.7.2, class template variant + template <class... Types> + class variant { + public: + + // 20.7.2.1, constructors + constexpr variant() noexcept(see below); + variant(const variant&); + variant(variant&&) noexcept(see below); + + template <class T> constexpr variant(T&&) noexcept(see below); + + template <class T, class... Args> + constexpr explicit variant(in_place_type_t<T>, Args&&...); + + template <class T, class U, class... Args> + constexpr explicit variant( + in_place_type_t<T>, initializer_list<U>, Args&&...); + + template <size_t I, class... Args> + constexpr explicit variant(in_place_index_t<I>, Args&&...); + + template <size_t I, class U, class... Args> + constexpr explicit variant( + in_place_index_t<I>, initializer_list<U>, Args&&...); + + // 20.7.2.2, destructor + ~variant(); + + // 20.7.2.3, assignment + variant& operator=(const variant&); + variant& operator=(variant&&) noexcept(see below); + + template <class T> variant& operator=(T&&) noexcept(see below); + + // 20.7.2.4, modifiers + template <class T, class... Args> + T& emplace(Args&&...); + + template <class T, class U, class... Args> + T& emplace(initializer_list<U>, Args&&...); + + template <size_t I, class... Args> + variant_alternative<I, variant>& emplace(Args&&...); + + template <size_t I, class U, class... Args> + variant_alternative<I, variant>& emplace(initializer_list<U>, Args&&...); + + // 20.7.2.5, value status + constexpr bool valueless_by_exception() const noexcept; + constexpr size_t index() const noexcept; + + // 20.7.2.6, swap + void swap(variant&) noexcept(see below); + }; + + // 20.7.3, variant helper classes + template <class T> struct variant_size; // undefined + + template <class T> + constexpr size_t variant_size_v = variant_size<T>::value; + + template <class T> struct variant_size<const T>; + template <class T> struct variant_size<volatile T>; + template <class T> struct variant_size<const volatile T>; + + template <class... Types> + struct variant_size<variant<Types...>>; + + template <size_t I, class T> struct variant_alternative; // undefined + + template <size_t I, class T> + using variant_alternative_t = typename variant_alternative<I, T>::type; + + template <size_t I, class T> struct variant_alternative<I, const T>; + template <size_t I, class T> struct variant_alternative<I, volatile T>; + template <size_t I, class T> struct variant_alternative<I, const volatile T>; + + template <size_t I, class... Types> + struct variant_alternative<I, variant<Types...>>; + + constexpr size_t variant_npos = -1; + + // 20.7.4, value access + template <class T, class... Types> + constexpr bool holds_alternative(const variant<Types...>&) noexcept; + + template <size_t I, class... Types> + constexpr variant_alternative_t<I, variant<Types...>>& + get(variant<Types...>&); + + template <size_t I, class... Types> + constexpr variant_alternative_t<I, variant<Types...>>&& + get(variant<Types...>&&); + + template <size_t I, class... Types> + constexpr variant_alternative_t<I, variant<Types...>> const& + get(const variant<Types...>&); + + template <size_t I, class... Types> + constexpr variant_alternative_t<I, variant<Types...>> const&& + get(const variant<Types...>&&); + + template <class T, class... Types> + constexpr T& get(variant<Types...>&); + + template <class T, class... Types> + constexpr T&& get(variant<Types...>&&); + + template <class T, class... Types> + constexpr const T& get(const variant<Types...>&); + + template <class T, class... Types> + constexpr const T&& get(const variant<Types...>&&); + + template <size_t I, class... Types> + constexpr add_pointer_t<variant_alternative_t<I, variant<Types...>>> + get_if(variant<Types...>*) noexcept; + + template <size_t I, class... Types> + constexpr add_pointer_t<const variant_alternative_t<I, variant<Types...>>> + get_if(const variant<Types...>*) noexcept; + + template <class T, class... Types> + constexpr add_pointer_t<T> + get_if(variant<Types...>*) noexcept; + + template <class T, class... Types> + constexpr add_pointer_t<const T> + get_if(const variant<Types...>*) noexcept; + + // 20.7.5, relational operators + template <class... Types> + constexpr bool operator==(const variant<Types...>&, const variant<Types...>&); + + template <class... Types> + constexpr bool operator!=(const variant<Types...>&, const variant<Types...>&); + + template <class... Types> + constexpr bool operator<(const variant<Types...>&, const variant<Types...>&); + + template <class... Types> + constexpr bool operator>(const variant<Types...>&, const variant<Types...>&); + + template <class... Types> + constexpr bool operator<=(const variant<Types...>&, const variant<Types...>&); + + template <class... Types> + constexpr bool operator>=(const variant<Types...>&, const variant<Types...>&); + + // 20.7.6, visitation + template <class Visitor, class... Variants> + constexpr see below visit(Visitor&&, Variants&&...); + + // 20.7.7, class monostate + struct monostate; + + // 20.7.8, monostate relational operators + constexpr bool operator<(monostate, monostate) noexcept; + constexpr bool operator>(monostate, monostate) noexcept; + constexpr bool operator<=(monostate, monostate) noexcept; + constexpr bool operator>=(monostate, monostate) noexcept; + constexpr bool operator==(monostate, monostate) noexcept; + constexpr bool operator!=(monostate, monostate) noexcept; + + // 20.7.9, specialized algorithms + template <class... Types> + void swap(variant<Types...>&, variant<Types...>&) noexcept(see below); + + // 20.7.10, class bad_variant_access + class bad_variant_access; + + // 20.7.11, hash support + template <class T> struct hash; + template <class... Types> struct hash<variant<Types...>>; + template <> struct hash<monostate>; + +} // namespace std + +*/ + +#include <cstddef> +#include <exception> +#include <functional> +#include <initializer_list> +#include <new> +#include <type_traits> +#include <utility> + +#include "config.hpp" +#include "in_place.hpp" +#include "lib.hpp" + +namespace mpark { + +#ifdef MPARK_RETURN_TYPE_DEDUCTION + +#define AUTO auto +#define AUTO_RETURN(...) { return __VA_ARGS__; } + +#define AUTO_REFREF auto && +#define AUTO_REFREF_RETURN(...) { return __VA_ARGS__; } + +#define DECLTYPE_AUTO decltype(auto) +#define DECLTYPE_AUTO_RETURN(...) { return __VA_ARGS__; } + +#else + +#define AUTO auto +#define AUTO_RETURN(...) \ + -> lib::decay_t<decltype(__VA_ARGS__)> { return __VA_ARGS__; } + +#define AUTO_REFREF auto +#define AUTO_REFREF_RETURN(...) \ + -> decltype((__VA_ARGS__)) { \ + static_assert(std::is_reference<decltype((__VA_ARGS__))>::value, ""); \ + return __VA_ARGS__; \ + } + +#define DECLTYPE_AUTO auto +#define DECLTYPE_AUTO_RETURN(...) \ + -> decltype(__VA_ARGS__) { return __VA_ARGS__; } + +#endif + + class bad_variant_access : public std::exception { + public: + virtual const char *what() const noexcept { return "bad_variant_access"; } + }; + + [[noreturn]] inline void throw_bad_variant_access() { +#ifdef MPARK_EXCEPTIONS + throw bad_variant_access{}; +#else + std::terminate(); +#endif + } + + template <typename... Ts> + class variant; + + template <typename T> + struct variant_size; + +#ifdef MPARK_VARIABLE_TEMPLATES + template <typename T> + constexpr std::size_t variant_size_v = variant_size<T>::value; +#endif + + template <typename T> + struct variant_size<const T> : variant_size<T> {}; + + template <typename T> + struct variant_size<volatile T> : variant_size<T> {}; + + template <typename T> + struct variant_size<const volatile T> : variant_size<T> {}; + + template <typename... Ts> + struct variant_size<variant<Ts...>> : lib::size_constant<sizeof...(Ts)> {}; + + template <std::size_t I, typename T> + struct variant_alternative; + + template <std::size_t I, typename T> + using variant_alternative_t = typename variant_alternative<I, T>::type; + + template <std::size_t I, typename T> + struct variant_alternative<I, const T> + : std::add_const<variant_alternative_t<I, T>> {}; + + template <std::size_t I, typename T> + struct variant_alternative<I, volatile T> + : std::add_volatile<variant_alternative_t<I, T>> {}; + + template <std::size_t I, typename T> + struct variant_alternative<I, const volatile T> + : std::add_cv<variant_alternative_t<I, T>> {}; + + template <std::size_t I, typename... Ts> + struct variant_alternative<I, variant<Ts...>> { + static_assert(I < sizeof...(Ts), + "Index out of bounds in std::variant_alternative<>"); + using type = lib::type_pack_element_t<I, Ts...>; + }; + + constexpr std::size_t variant_npos = static_cast<std::size_t>(-1); + + namespace detail { + + inline constexpr bool all() { return true; } + + template <typename... Bs> + inline constexpr bool all(bool b, Bs... bs) { + return b && all(bs...); + } + + constexpr std::size_t not_found = static_cast<std::size_t>(-1); + constexpr std::size_t ambiguous = static_cast<std::size_t>(-2); + +#ifdef MPARK_CPP14_CONSTEXPR + template <typename T, typename... Ts> + inline constexpr std::size_t find_index() { + constexpr lib::array<bool, sizeof...(Ts)> matches = { + {std::is_same<T, Ts>::value...} + }; + std::size_t result = not_found; + for (std::size_t i = 0; i < sizeof...(Ts); ++i) { + if (matches[i]) { + if (result != not_found) { + return ambiguous; + } + result = i; + } + } + return result; + } +#else + inline constexpr std::size_t find_index_impl(std::size_t result, + std::size_t) { + return result; + } + + template <typename... Bs> + inline constexpr std::size_t find_index_impl(std::size_t result, + std::size_t idx, + bool b, + Bs... bs) { + return b ? (result != not_found ? ambiguous + : find_index_impl(idx, idx + 1, bs...)) + : find_index_impl(result, idx + 1, bs...); + } + + template <typename T, typename... Ts> + inline constexpr std::size_t find_index() { + return find_index_impl(not_found, 0, std::is_same<T, Ts>::value...); + } +#endif + + template <std::size_t I> + using find_index_sfinae_impl = + lib::enable_if_t<I != not_found && I != ambiguous, + lib::size_constant<I>>; + + template <typename T, typename... Ts> + using find_index_sfinae = find_index_sfinae_impl<find_index<T, Ts...>()>; + + template <std::size_t I> + struct find_index_checked_impl : lib::size_constant<I> { + static_assert(I != not_found, "the specified type is not found."); + static_assert(I != ambiguous, "the specified type is ambiguous."); + }; + + template <typename T, typename... Ts> + using find_index_checked = find_index_checked_impl<find_index<T, Ts...>()>; + + struct valueless_t {}; + + enum class Trait { TriviallyAvailable, Available, Unavailable }; + + template <typename T, + template <typename> class IsTriviallyAvailable, + template <typename> class IsAvailable> + inline constexpr Trait trait() { + return IsTriviallyAvailable<T>::value + ? Trait::TriviallyAvailable + : IsAvailable<T>::value ? Trait::Available + : Trait::Unavailable; + } + +#ifdef MPARK_CPP14_CONSTEXPR + template <typename... Traits> + inline constexpr Trait common_trait(Traits... traits) { + Trait result = Trait::TriviallyAvailable; + for (Trait t : {traits...}) { + if (static_cast<int>(t) > static_cast<int>(result)) { + result = t; + } + } + return result; + } +#else + inline constexpr Trait common_trait_impl(Trait result) { return result; } + + template <typename... Traits> + inline constexpr Trait common_trait_impl(Trait result, + Trait t, + Traits... ts) { + return static_cast<int>(t) > static_cast<int>(result) + ? common_trait_impl(t, ts...) + : common_trait_impl(result, ts...); + } + + template <typename... Traits> + inline constexpr Trait common_trait(Traits... ts) { + return common_trait_impl(Trait::TriviallyAvailable, ts...); + } +#endif + + template <typename... Ts> + struct traits { + static constexpr Trait copy_constructible_trait = + common_trait(trait<Ts, + lib::is_trivially_copy_constructible, + std::is_copy_constructible>()...); + + static constexpr Trait move_constructible_trait = + common_trait(trait<Ts, + lib::is_trivially_move_constructible, + std::is_move_constructible>()...); + + static constexpr Trait copy_assignable_trait = + common_trait(copy_constructible_trait, + trait<Ts, + lib::is_trivially_copy_assignable, + std::is_copy_assignable>()...); + + static constexpr Trait move_assignable_trait = + common_trait(move_constructible_trait, + trait<Ts, + lib::is_trivially_move_assignable, + std::is_move_assignable>()...); + + static constexpr Trait destructible_trait = + common_trait(trait<Ts, + std::is_trivially_destructible, + std::is_destructible>()...); + }; + + namespace access { + + struct recursive_union { +#ifdef MPARK_RETURN_TYPE_DEDUCTION + template <typename V> + inline static constexpr auto &&get_alt(V &&v, in_place_index_t<0>) { + return lib::forward<V>(v).head_; + } + + template <typename V, std::size_t I> + inline static constexpr auto &&get_alt(V &&v, in_place_index_t<I>) { + return get_alt(lib::forward<V>(v).tail_, in_place_index_t<I - 1>{}); + } +#else + template <std::size_t I, bool Dummy = true> + struct get_alt_impl { + template <typename V> + inline constexpr AUTO_REFREF operator()(V &&v) const + AUTO_REFREF_RETURN(get_alt_impl<I - 1>{}(lib::forward<V>(v).tail_)) + }; + + template <bool Dummy> + struct get_alt_impl<0, Dummy> { + template <typename V> + inline constexpr AUTO_REFREF operator()(V &&v) const + AUTO_REFREF_RETURN(lib::forward<V>(v).head_) + }; + + template <typename V, std::size_t I> + inline static constexpr AUTO_REFREF get_alt(V &&v, in_place_index_t<I>) + AUTO_REFREF_RETURN(get_alt_impl<I>{}(lib::forward<V>(v))) +#endif + }; + + struct base { + template <std::size_t I, typename V> + inline static constexpr AUTO_REFREF get_alt(V &&v) + AUTO_REFREF_RETURN(recursive_union::get_alt( + data(lib::forward<V>(v)), in_place_index_t<I>{})) + }; + + struct variant { + template <std::size_t I, typename V> + inline static constexpr AUTO_REFREF get_alt(V &&v) + AUTO_REFREF_RETURN(base::get_alt<I>(lib::forward<V>(v).impl_)) + }; + + } // namespace access + + namespace visitation { + + struct base { + private: + template <typename T> + inline static constexpr const T &at(const T &elem) { + return elem; + } + + template <typename T, std::size_t N, typename... Is> + inline static constexpr const lib::remove_all_extents_t<T> &at( + const lib::array<T, N> &elems, std::size_t i, Is... is) { + return at(elems[i], is...); + } + + template <typename F, typename... Fs> + inline static constexpr int visit_visitor_return_type_check() { + static_assert(all(std::is_same<F, Fs>::value...), + "`mpark::visit` requires the visitor to have a single " + "return type."); + return 0; + } + + template <typename... Fs> + inline static constexpr lib::array< + lib::common_type_t<lib::decay_t<Fs>...>, + sizeof...(Fs)> + make_farray(Fs &&... fs) { + using result = lib::array<lib::common_type_t<lib::decay_t<Fs>...>, + sizeof...(Fs)>; + return visit_visitor_return_type_check<lib::decay_t<Fs>...>(), + result{{lib::forward<Fs>(fs)...}}; + } + + template <std::size_t... Is> + struct dispatcher { + template <typename F, typename... Vs> + struct impl { + inline static constexpr DECLTYPE_AUTO dispatch(F f, Vs... vs) + DECLTYPE_AUTO_RETURN(lib::invoke( + static_cast<F>(f), + access::base::get_alt<Is>(static_cast<Vs>(vs))...)) + }; + }; + + template <typename F, typename... Vs, std::size_t... Is> + inline static constexpr AUTO make_dispatch(lib::index_sequence<Is...>) + AUTO_RETURN(&dispatcher<Is...>::template impl<F, Vs...>::dispatch) + + template <std::size_t I, typename F, typename... Vs> + inline static constexpr AUTO make_fdiagonal_impl() + AUTO_RETURN(make_dispatch<F, Vs...>( + lib::index_sequence<lib::indexed_type<I, Vs>::value...>{})) + + template <typename F, typename... Vs, std::size_t... Is> + inline static constexpr AUTO make_fdiagonal_impl( + lib::index_sequence<Is...>) + AUTO_RETURN(make_farray(make_fdiagonal_impl<Is, F, Vs...>()...)) + + template <typename F, typename V, typename... Vs> + inline static constexpr /* auto * */ auto make_fdiagonal() + -> decltype(make_fdiagonal_impl<F, V, Vs...>( + lib::make_index_sequence<lib::decay_t<V>::size()>{})) { + static_assert( + all((lib::decay_t<V>::size() == lib::decay_t<Vs>::size())...), + "all of the variants must be the same size."); + return make_fdiagonal_impl<F, V, Vs...>( + lib::make_index_sequence<lib::decay_t<V>::size()>{}); + } + +#ifdef MPARK_RETURN_TYPE_DEDUCTION + template <typename F, typename... Vs, std::size_t... Is> + inline static constexpr auto make_fmatrix_impl( + lib::index_sequence<Is...> is) { + return make_dispatch<F, Vs...>(is); + } + + template <typename F, + typename... Vs, + std::size_t... Is, + std::size_t... Js, + typename... Ls> + inline static constexpr auto make_fmatrix_impl( + lib::index_sequence<Is...>, lib::index_sequence<Js...>, Ls... ls) { + return make_farray(make_fmatrix_impl<F, Vs...>( + lib::index_sequence<Is..., Js>{}, ls...)...); + } + + template <typename F, typename... Vs> + inline static constexpr auto make_fmatrix() { + return make_fmatrix_impl<F, Vs...>( + lib::index_sequence<>{}, + lib::make_index_sequence<lib::decay_t<Vs>::size()>{}...); + } +#else + template <typename F, typename... Vs> + struct make_fmatrix_impl { + template <typename...> + struct impl; + + template <std::size_t... Is> + struct impl<lib::index_sequence<Is...>> { + inline constexpr AUTO operator()() const + AUTO_RETURN( + make_dispatch<F, Vs...>(lib::index_sequence<Is...>{})) + }; + + template <std::size_t... Is, std::size_t... Js, typename... Ls> + struct impl<lib::index_sequence<Is...>, + lib::index_sequence<Js...>, + Ls...> { + inline constexpr AUTO operator()() const + AUTO_RETURN(make_farray( + impl<lib::index_sequence<Is..., Js>, Ls...>{}()...)) + }; + }; + + template <typename F, typename... Vs> + inline static constexpr AUTO make_fmatrix() + AUTO_RETURN( + typename make_fmatrix_impl<F, Vs...>::template impl< + lib::index_sequence<>, + lib::make_index_sequence<lib::decay_t<Vs>::size()>...>{}()) +#endif + + public: + template <typename Visitor, typename... Vs> + inline static constexpr DECLTYPE_AUTO visit_alt_at(std::size_t index, + Visitor &&visitor, + Vs &&... vs) + DECLTYPE_AUTO_RETURN( + at(make_fdiagonal<Visitor &&, + decltype(as_base(lib::forward<Vs>(vs)))...>(), + index)(lib::forward<Visitor>(visitor), + as_base(lib::forward<Vs>(vs))...)) + + template <typename Visitor, typename... Vs> + inline static constexpr DECLTYPE_AUTO visit_alt(Visitor &&visitor, + Vs &&... vs) + DECLTYPE_AUTO_RETURN( + at(make_fmatrix<Visitor &&, + decltype(as_base(lib::forward<Vs>(vs)))...>(), + vs.index()...)(lib::forward<Visitor>(visitor), + as_base(lib::forward<Vs>(vs))...)) + }; + + struct variant { + private: + template <typename Visitor, typename... Values> + struct visit_exhaustive_visitor_check { + static_assert( + lib::is_invocable<Visitor, Values...>::value, + "`mpark::visit` requires the visitor to be exhaustive."); + +#ifdef _MSC_VER +#pragma warning(push) +#pragma warning(disable : 4100) +#endif + inline constexpr DECLTYPE_AUTO operator()(Visitor &&visitor, + Values &&... values) const + DECLTYPE_AUTO_RETURN(lib::invoke(lib::forward<Visitor>(visitor), + lib::forward<Values>(values)...)) +#ifdef _MSC_VER +#pragma warning(pop) +#endif + }; + + template <typename Visitor> + struct value_visitor { + Visitor &&visitor_; + + template <typename... Alts> + inline constexpr DECLTYPE_AUTO operator()(Alts &&... alts) const + DECLTYPE_AUTO_RETURN( + visit_exhaustive_visitor_check< + Visitor, + decltype((lib::forward<Alts>(alts).value))...>{}( + lib::forward<Visitor>(visitor_), + lib::forward<Alts>(alts).value...)) + }; + + template <typename Visitor> + inline static constexpr AUTO make_value_visitor(Visitor &&visitor) + AUTO_RETURN(value_visitor<Visitor>{lib::forward<Visitor>(visitor)}) + + public: + template <typename Visitor, typename... Vs> + inline static constexpr DECLTYPE_AUTO visit_alt_at(std::size_t index, + Visitor &&visitor, + Vs &&... vs) + DECLTYPE_AUTO_RETURN( + base::visit_alt_at(index, + lib::forward<Visitor>(visitor), + lib::forward<Vs>(vs).impl_...)) + + template <typename Visitor, typename... Vs> + inline static constexpr DECLTYPE_AUTO visit_alt(Visitor &&visitor, + Vs &&... vs) + DECLTYPE_AUTO_RETURN(base::visit_alt(lib::forward<Visitor>(visitor), + lib::forward<Vs>(vs).impl_...)) + + template <typename Visitor, typename... Vs> + inline static constexpr DECLTYPE_AUTO visit_value_at(std::size_t index, + Visitor &&visitor, + Vs &&... vs) + DECLTYPE_AUTO_RETURN( + visit_alt_at(index, + make_value_visitor(lib::forward<Visitor>(visitor)), + lib::forward<Vs>(vs)...)) + + template <typename Visitor, typename... Vs> + inline static constexpr DECLTYPE_AUTO visit_value(Visitor &&visitor, + Vs &&... vs) + DECLTYPE_AUTO_RETURN( + visit_alt(make_value_visitor(lib::forward<Visitor>(visitor)), + lib::forward<Vs>(vs)...)) + }; + + } // namespace visitation + + template <std::size_t Index, typename T> + struct alt { + using value_type = T; + +#ifdef _MSC_VER +#pragma warning(push) +#pragma warning(disable : 4244) +#endif + template <typename... Args> + inline explicit constexpr alt(in_place_t, Args &&... args) + : value(lib::forward<Args>(args)...) {} +#ifdef _MSC_VER +#pragma warning(pop) +#endif + + T value; + }; + + template <Trait DestructibleTrait, std::size_t Index, typename... Ts> + union recursive_union; + + template <Trait DestructibleTrait, std::size_t Index> + union recursive_union<DestructibleTrait, Index> {}; + +#define MPARK_VARIANT_RECURSIVE_UNION(destructible_trait, destructor) \ + template <std::size_t Index, typename T, typename... Ts> \ + union recursive_union<destructible_trait, Index, T, Ts...> { \ + public: \ + inline explicit constexpr recursive_union(valueless_t) noexcept \ + : dummy_{} {} \ + \ + template <typename... Args> \ + inline explicit constexpr recursive_union(in_place_index_t<0>, \ + Args &&... args) \ + : head_(in_place_t{}, lib::forward<Args>(args)...) {} \ + \ + template <std::size_t I, typename... Args> \ + inline explicit constexpr recursive_union(in_place_index_t<I>, \ + Args &&... args) \ + : tail_(in_place_index_t<I - 1>{}, lib::forward<Args>(args)...) {} \ + \ + recursive_union(const recursive_union &) = default; \ + recursive_union(recursive_union &&) = default; \ + \ + destructor \ + \ + recursive_union &operator=(const recursive_union &) = default; \ + recursive_union &operator=(recursive_union &&) = default; \ + \ + private: \ + char dummy_; \ + alt<Index, T> head_; \ + recursive_union<destructible_trait, Index + 1, Ts...> tail_; \ + \ + friend struct access::recursive_union; \ + } + + MPARK_VARIANT_RECURSIVE_UNION(Trait::TriviallyAvailable, + ~recursive_union() = default;); + MPARK_VARIANT_RECURSIVE_UNION(Trait::Available, + ~recursive_union() {}); + MPARK_VARIANT_RECURSIVE_UNION(Trait::Unavailable, + ~recursive_union() = delete;); + +#undef MPARK_VARIANT_RECURSIVE_UNION + + using index_t = unsigned int; + + template <Trait DestructibleTrait, typename... Ts> + class base { + public: + inline explicit constexpr base(valueless_t tag) noexcept + : data_(tag), index_(static_cast<index_t>(-1)) {} + + template <std::size_t I, typename... Args> + inline explicit constexpr base(in_place_index_t<I>, Args &&... args) + : data_(in_place_index_t<I>{}, lib::forward<Args>(args)...), + index_(I) {} + + inline constexpr bool valueless_by_exception() const noexcept { + return index_ == static_cast<index_t>(-1); + } + + inline constexpr std::size_t index() const noexcept { + return valueless_by_exception() ? variant_npos : index_; + } + + protected: + using data_t = recursive_union<DestructibleTrait, 0, Ts...>; + + friend inline constexpr base &as_base(base &b) { return b; } + friend inline constexpr const base &as_base(const base &b) { return b; } + friend inline constexpr base &&as_base(base &&b) { return lib::move(b); } + friend inline constexpr const base &&as_base(const base &&b) { return lib::move(b); } + + friend inline constexpr data_t &data(base &b) { return b.data_; } + friend inline constexpr const data_t &data(const base &b) { return b.data_; } + friend inline constexpr data_t &&data(base &&b) { return lib::move(b).data_; } + friend inline constexpr const data_t &&data(const base &&b) { return lib::move(b).data_; } + + inline static constexpr std::size_t size() { return sizeof...(Ts); } + + data_t data_; + index_t index_; + + friend struct access::base; + friend struct visitation::base; + }; + + struct dtor { +#ifdef _MSC_VER +#pragma warning(push) +#pragma warning(disable : 4100) +#endif + template <typename Alt> + inline void operator()(Alt &alt) const noexcept { alt.~Alt(); } +#ifdef _MSC_VER +#pragma warning(pop) +#endif + }; + +#if defined(_MSC_VER) && _MSC_VER < 1910 +#define INHERITING_CTOR(type, base) \ + template <typename... Args> \ + inline explicit constexpr type(Args &&... args) \ + : base(lib::forward<Args>(args)...) {} +#else +#define INHERITING_CTOR(type, base) using base::base; +#endif + + template <typename Traits, Trait = Traits::destructible_trait> + class destructor; + +#define MPARK_VARIANT_DESTRUCTOR(destructible_trait, definition, destroy) \ + template <typename... Ts> \ + class destructor<traits<Ts...>, destructible_trait> \ + : public base<destructible_trait, Ts...> { \ + using super = base<destructible_trait, Ts...>; \ + \ + public: \ + INHERITING_CTOR(destructor, super) \ + using super::operator=; \ + \ + destructor(const destructor &) = default; \ + destructor(destructor &&) = default; \ + definition \ + destructor &operator=(const destructor &) = default; \ + destructor &operator=(destructor &&) = default; \ + \ + protected: \ + destroy \ + } + + MPARK_VARIANT_DESTRUCTOR( + Trait::TriviallyAvailable, + ~destructor() = default;, + inline void destroy() noexcept { + this->index_ = static_cast<index_t>(-1); + }); + + MPARK_VARIANT_DESTRUCTOR( + Trait::Available, + ~destructor() { destroy(); }, + inline void destroy() noexcept { + if (!this->valueless_by_exception()) { + visitation::base::visit_alt(dtor{}, *this); + } + this->index_ = static_cast<index_t>(-1); + }); + + MPARK_VARIANT_DESTRUCTOR( + Trait::Unavailable, + ~destructor() = delete;, + inline void destroy() noexcept = delete;); + +#undef MPARK_VARIANT_DESTRUCTOR + + template <typename Traits> + class constructor : public destructor<Traits> { + using super = destructor<Traits>; + + public: + INHERITING_CTOR(constructor, super) + using super::operator=; + + protected: +#ifndef MPARK_GENERIC_LAMBDAS + struct ctor { + template <typename LhsAlt, typename RhsAlt> + inline void operator()(LhsAlt &lhs_alt, RhsAlt &&rhs_alt) const { + constructor::construct_alt(lhs_alt, + lib::forward<RhsAlt>(rhs_alt).value); + } + }; +#endif + + template <std::size_t I, typename T, typename... Args> + inline static T &construct_alt(alt<I, T> &a, Args &&... args) { + ::new (static_cast<void *>(lib::addressof(a))) + alt<I, T>(in_place_t{}, lib::forward<Args>(args)...); + return a.value; + } + + template <typename Rhs> + inline static void generic_construct(constructor &lhs, Rhs &&rhs) { + lhs.destroy(); + if (!rhs.valueless_by_exception()) { + visitation::base::visit_alt_at( + rhs.index(), +#ifdef MPARK_GENERIC_LAMBDAS + [](auto &lhs_alt, auto &&rhs_alt) { + constructor::construct_alt( + lhs_alt, lib::forward<decltype(rhs_alt)>(rhs_alt).value); + } +#else + ctor{} +#endif + , + lhs, + lib::forward<Rhs>(rhs)); + lhs.index_ = rhs.index_; + } + } + }; + + template <typename Traits, Trait = Traits::move_constructible_trait> + class move_constructor; + +#define MPARK_VARIANT_MOVE_CONSTRUCTOR(move_constructible_trait, definition) \ + template <typename... Ts> \ + class move_constructor<traits<Ts...>, move_constructible_trait> \ + : public constructor<traits<Ts...>> { \ + using super = constructor<traits<Ts...>>; \ + \ + public: \ + INHERITING_CTOR(move_constructor, super) \ + using super::operator=; \ + \ + move_constructor(const move_constructor &) = default; \ + definition \ + ~move_constructor() = default; \ + move_constructor &operator=(const move_constructor &) = default; \ + move_constructor &operator=(move_constructor &&) = default; \ + } + + MPARK_VARIANT_MOVE_CONSTRUCTOR( + Trait::TriviallyAvailable, + move_constructor(move_constructor &&that) = default;); + + MPARK_VARIANT_MOVE_CONSTRUCTOR( + Trait::Available, + move_constructor(move_constructor &&that) noexcept( + all(std::is_nothrow_move_constructible<Ts>::value...)) + : move_constructor(valueless_t{}) { + this->generic_construct(*this, lib::move(that)); + }); + + MPARK_VARIANT_MOVE_CONSTRUCTOR( + Trait::Unavailable, + move_constructor(move_constructor &&) = delete;); + +#undef MPARK_VARIANT_MOVE_CONSTRUCTOR + + template <typename Traits, Trait = Traits::copy_constructible_trait> + class copy_constructor; + +#define MPARK_VARIANT_COPY_CONSTRUCTOR(copy_constructible_trait, definition) \ + template <typename... Ts> \ + class copy_constructor<traits<Ts...>, copy_constructible_trait> \ + : public move_constructor<traits<Ts...>> { \ + using super = move_constructor<traits<Ts...>>; \ + \ + public: \ + INHERITING_CTOR(copy_constructor, super) \ + using super::operator=; \ + \ + definition \ + copy_constructor(copy_constructor &&) = default; \ + ~copy_constructor() = default; \ + copy_constructor &operator=(const copy_constructor &) = default; \ + copy_constructor &operator=(copy_constructor &&) = default; \ + } + + MPARK_VARIANT_COPY_CONSTRUCTOR( + Trait::TriviallyAvailable, + copy_constructor(const copy_constructor &that) = default;); + + MPARK_VARIANT_COPY_CONSTRUCTOR( + Trait::Available, + copy_constructor(const copy_constructor &that) + : copy_constructor(valueless_t{}) { + this->generic_construct(*this, that); + }); + + MPARK_VARIANT_COPY_CONSTRUCTOR( + Trait::Unavailable, + copy_constructor(const copy_constructor &) = delete;); + +#undef MPARK_VARIANT_COPY_CONSTRUCTOR + + template <typename Traits> + class assignment : public copy_constructor<Traits> { + using super = copy_constructor<Traits>; + + public: + INHERITING_CTOR(assignment, super) + using super::operator=; + + template <std::size_t I, typename... Args> + inline /* auto & */ auto emplace(Args &&... args) + -> decltype(this->construct_alt(access::base::get_alt<I>(*this), + lib::forward<Args>(args)...)) { + this->destroy(); + auto &result = this->construct_alt(access::base::get_alt<I>(*this), + lib::forward<Args>(args)...); + this->index_ = I; + return result; + } + + protected: +#ifndef MPARK_GENERIC_LAMBDAS + template <typename That> + struct assigner { + template <typename ThisAlt, typename ThatAlt> + inline void operator()(ThisAlt &this_alt, ThatAlt &&that_alt) const { + self->assign_alt(this_alt, lib::forward<ThatAlt>(that_alt).value); + } + assignment *self; + }; +#endif + + template <std::size_t I, typename T, typename Arg> + inline void assign_alt(alt<I, T> &a, Arg &&arg) { + if (this->index() == I) { +#ifdef _MSC_VER +#pragma warning(push) +#pragma warning(disable : 4244) +#endif + a.value = lib::forward<Arg>(arg); +#ifdef _MSC_VER +#pragma warning(pop) +#endif + } else { + struct { + void operator()(std::true_type) const { + this_->emplace<I>(lib::forward<Arg>(arg_)); + } + void operator()(std::false_type) const { + this_->emplace<I>(T(lib::forward<Arg>(arg_))); + } + assignment *this_; + Arg &&arg_; + } impl{this, lib::forward<Arg>(arg)}; + impl(lib::bool_constant< + std::is_nothrow_constructible<T, Arg>::value || + !std::is_nothrow_move_constructible<T>::value>{}); + } + } + + template <typename That> + inline void generic_assign(That &&that) { + if (this->valueless_by_exception() && that.valueless_by_exception()) { + // do nothing. + } else if (that.valueless_by_exception()) { + this->destroy(); + } else { + visitation::base::visit_alt_at( + that.index(), +#ifdef MPARK_GENERIC_LAMBDAS + [this](auto &this_alt, auto &&that_alt) { + this->assign_alt( + this_alt, lib::forward<decltype(that_alt)>(that_alt).value); + } +#else + assigner<That>{this} +#endif + , + *this, + lib::forward<That>(that)); + } + } + }; + + template <typename Traits, Trait = Traits::move_assignable_trait> + class move_assignment; + +#define MPARK_VARIANT_MOVE_ASSIGNMENT(move_assignable_trait, definition) \ + template <typename... Ts> \ + class move_assignment<traits<Ts...>, move_assignable_trait> \ + : public assignment<traits<Ts...>> { \ + using super = assignment<traits<Ts...>>; \ + \ + public: \ + INHERITING_CTOR(move_assignment, super) \ + using super::operator=; \ + \ + move_assignment(const move_assignment &) = default; \ + move_assignment(move_assignment &&) = default; \ + ~move_assignment() = default; \ + move_assignment &operator=(const move_assignment &) = default; \ + definition \ + } + + MPARK_VARIANT_MOVE_ASSIGNMENT( + Trait::TriviallyAvailable, + move_assignment &operator=(move_assignment &&that) = default;); + + MPARK_VARIANT_MOVE_ASSIGNMENT( + Trait::Available, + move_assignment & + operator=(move_assignment &&that) noexcept( + all((std::is_nothrow_move_constructible<Ts>::value && + std::is_nothrow_move_assignable<Ts>::value)...)) { + this->generic_assign(lib::move(that)); + return *this; + }); + + MPARK_VARIANT_MOVE_ASSIGNMENT( + Trait::Unavailable, + move_assignment &operator=(move_assignment &&) = delete;); + +#undef MPARK_VARIANT_MOVE_ASSIGNMENT + + template <typename Traits, Trait = Traits::copy_assignable_trait> + class copy_assignment; + +#define MPARK_VARIANT_COPY_ASSIGNMENT(copy_assignable_trait, definition) \ + template <typename... Ts> \ + class copy_assignment<traits<Ts...>, copy_assignable_trait> \ + : public move_assignment<traits<Ts...>> { \ + using super = move_assignment<traits<Ts...>>; \ + \ + public: \ + INHERITING_CTOR(copy_assignment, super) \ + using super::operator=; \ + \ + copy_assignment(const copy_assignment &) = default; \ + copy_assignment(copy_assignment &&) = default; \ + ~copy_assignment() = default; \ + definition \ + copy_assignment &operator=(copy_assignment &&) = default; \ + } + + MPARK_VARIANT_COPY_ASSIGNMENT( + Trait::TriviallyAvailable, + copy_assignment &operator=(const copy_assignment &that) = default;); + + MPARK_VARIANT_COPY_ASSIGNMENT( + Trait::Available, + copy_assignment &operator=(const copy_assignment &that) { + this->generic_assign(that); + return *this; + }); + + MPARK_VARIANT_COPY_ASSIGNMENT( + Trait::Unavailable, + copy_assignment &operator=(const copy_assignment &) = delete;); + +#undef MPARK_VARIANT_COPY_ASSIGNMENT + + template <typename... Ts> + class impl : public copy_assignment<traits<Ts...>> { + using super = copy_assignment<traits<Ts...>>; + + public: + INHERITING_CTOR(impl, super) + using super::operator=; + + template <std::size_t I, typename Arg> + inline void assign(Arg &&arg) { + this->assign_alt(access::base::get_alt<I>(*this), + lib::forward<Arg>(arg)); + } + + inline void swap(impl &that) { + if (this->valueless_by_exception() && that.valueless_by_exception()) { + // do nothing. + } else if (this->index() == that.index()) { + visitation::base::visit_alt_at(this->index(), +#ifdef MPARK_GENERIC_LAMBDAS + [](auto &this_alt, auto &that_alt) { + using std::swap; + swap(this_alt.value, + that_alt.value); + } +#else + swapper{} +#endif + , + *this, + that); + } else { + impl *lhs = this; + impl *rhs = lib::addressof(that); + if (lhs->move_nothrow() && !rhs->move_nothrow()) { + std::swap(lhs, rhs); + } + impl tmp(lib::move(*rhs)); +#ifdef MPARK_EXCEPTIONS + // EXTENSION: When the move construction of `lhs` into `rhs` throws + // and `tmp` is nothrow move constructible then we move `tmp` back + // into `rhs` and provide the strong exception safety guarantee. + try { + this->generic_construct(*rhs, lib::move(*lhs)); + } catch (...) { + if (tmp.move_nothrow()) { + this->generic_construct(*rhs, lib::move(tmp)); + } + throw; + } +#else + this->generic_construct(*rhs, lib::move(*lhs)); +#endif + this->generic_construct(*lhs, lib::move(tmp)); + } + } + + private: +#ifndef MPARK_GENERIC_LAMBDAS + struct swapper { + template <typename ThisAlt, typename ThatAlt> + inline void operator()(ThisAlt &this_alt, ThatAlt &that_alt) const { + using std::swap; + swap(this_alt.value, that_alt.value); + } + }; +#endif + + inline constexpr bool move_nothrow() const { + return this->valueless_by_exception() || + lib::array<bool, sizeof...(Ts)>{ + {std::is_nothrow_move_constructible<Ts>::value...} + }[this->index()]; + } + }; + + template <typename... Ts> + struct overload; + + template <> + struct overload<> { void operator()() const {} }; + + template <typename T, typename... Ts> + struct overload<T, Ts...> : overload<Ts...> { + using overload<Ts...>::operator(); + lib::identity<T> operator()(T) const { return {}; } + }; + + template <typename T, typename... Ts> + using best_match_t = + typename lib::invoke_result_t<overload<Ts...>, T &&>::type; + + template <typename T> + struct is_in_place_index : std::false_type {}; + + template <std::size_t I> + struct is_in_place_index<in_place_index_t<I>> : std::true_type {}; + + template <typename T> + struct is_in_place_type : std::false_type {}; + + template <typename T> + struct is_in_place_type<in_place_type_t<T>> : std::true_type {}; + + } // detail + + template <typename... Ts> + class variant { + static_assert(0 < sizeof...(Ts), + "variant must consist of at least one alternative."); + + static_assert(lib::all<!std::is_array<Ts>::value...>::value, + "variant can not have an array type as an alternative."); + + static_assert(lib::all<!std::is_reference<Ts>::value...>::value, + "variant can not have a reference type as an alternative."); + + static_assert(lib::all<!std::is_void<Ts>::value...>::value, + "variant can not have a void type as an alternative."); + + public: + template < + typename Front = lib::type_pack_element_t<0, Ts...>, + lib::enable_if_t<std::is_default_constructible<Front>::value, int> = 0> + inline constexpr variant() noexcept( + std::is_nothrow_default_constructible<Front>::value) + : impl_(in_place_index_t<0>{}) {} + + variant(const variant &) = default; + variant(variant &&) = default; + + template < + typename Arg, + typename Decayed = lib::decay_t<Arg>, + lib::enable_if_t<!std::is_same<Decayed, variant>::value, int> = 0, + lib::enable_if_t<!detail::is_in_place_index<Decayed>::value, int> = 0, + lib::enable_if_t<!detail::is_in_place_type<Decayed>::value, int> = 0, + typename T = detail::best_match_t<Arg, Ts...>, + std::size_t I = detail::find_index_sfinae<T, Ts...>::value, + lib::enable_if_t<std::is_constructible<T, Arg>::value, int> = 0> + inline constexpr variant(Arg &&arg) noexcept( + std::is_nothrow_constructible<T, Arg>::value) + : impl_(in_place_index_t<I>{}, lib::forward<Arg>(arg)) {} + + template < + std::size_t I, + typename... Args, + typename T = lib::type_pack_element_t<I, Ts...>, + lib::enable_if_t<std::is_constructible<T, Args...>::value, int> = 0> + inline explicit constexpr variant( + in_place_index_t<I>, + Args &&... args) noexcept(std::is_nothrow_constructible<T, + Args...>::value) + : impl_(in_place_index_t<I>{}, lib::forward<Args>(args)...) {} + + template < + std::size_t I, + typename Up, + typename... Args, + typename T = lib::type_pack_element_t<I, Ts...>, + lib::enable_if_t<std::is_constructible<T, + std::initializer_list<Up> &, + Args...>::value, + int> = 0> + inline explicit constexpr variant( + in_place_index_t<I>, + std::initializer_list<Up> il, + Args &&... args) noexcept(std:: + is_nothrow_constructible< + T, + std::initializer_list<Up> &, + Args...>::value) + : impl_(in_place_index_t<I>{}, il, lib::forward<Args>(args)...) {} + + template < + typename T, + typename... Args, + std::size_t I = detail::find_index_sfinae<T, Ts...>::value, + lib::enable_if_t<std::is_constructible<T, Args...>::value, int> = 0> + inline explicit constexpr variant( + in_place_type_t<T>, + Args &&... args) noexcept(std::is_nothrow_constructible<T, + Args...>::value) + : impl_(in_place_index_t<I>{}, lib::forward<Args>(args)...) {} + + template < + typename T, + typename Up, + typename... Args, + std::size_t I = detail::find_index_sfinae<T, Ts...>::value, + lib::enable_if_t<std::is_constructible<T, + std::initializer_list<Up> &, + Args...>::value, + int> = 0> + inline explicit constexpr variant( + in_place_type_t<T>, + std::initializer_list<Up> il, + Args &&... args) noexcept(std:: + is_nothrow_constructible< + T, + std::initializer_list<Up> &, + Args...>::value) + : impl_(in_place_index_t<I>{}, il, lib::forward<Args>(args)...) {} + + ~variant() = default; + + variant &operator=(const variant &) = default; + variant &operator=(variant &&) = default; + + template <typename Arg, + lib::enable_if_t<!std::is_same<lib::decay_t<Arg>, variant>::value, + int> = 0, + typename T = detail::best_match_t<Arg, Ts...>, + std::size_t I = detail::find_index_sfinae<T, Ts...>::value, + lib::enable_if_t<(std::is_assignable<T &, Arg>::value && + std::is_constructible<T, Arg>::value), + int> = 0> + inline variant &operator=(Arg &&arg) noexcept( + (std::is_nothrow_assignable<T &, Arg>::value && + std::is_nothrow_constructible<T, Arg>::value)) { + impl_.template assign<I>(lib::forward<Arg>(arg)); + return *this; + } + + template < + std::size_t I, + typename... Args, + typename T = lib::type_pack_element_t<I, Ts...>, + lib::enable_if_t<std::is_constructible<T, Args...>::value, int> = 0> + inline T &emplace(Args &&... args) { + return impl_.template emplace<I>(lib::forward<Args>(args)...); + } + + template < + std::size_t I, + typename Up, + typename... Args, + typename T = lib::type_pack_element_t<I, Ts...>, + lib::enable_if_t<std::is_constructible<T, + std::initializer_list<Up> &, + Args...>::value, + int> = 0> + inline T &emplace(std::initializer_list<Up> il, Args &&... args) { + return impl_.template emplace<I>(il, lib::forward<Args>(args)...); + } + + template < + typename T, + typename... Args, + std::size_t I = detail::find_index_sfinae<T, Ts...>::value, + lib::enable_if_t<std::is_constructible<T, Args...>::value, int> = 0> + inline T &emplace(Args &&... args) { + return impl_.template emplace<I>(lib::forward<Args>(args)...); + } + + template < + typename T, + typename Up, + typename... Args, + std::size_t I = detail::find_index_sfinae<T, Ts...>::value, + lib::enable_if_t<std::is_constructible<T, + std::initializer_list<Up> &, + Args...>::value, + int> = 0> + inline T &emplace(std::initializer_list<Up> il, Args &&... args) { + return impl_.template emplace<I>(il, lib::forward<Args>(args)...); + } + + inline constexpr bool valueless_by_exception() const noexcept { + return impl_.valueless_by_exception(); + } + + inline constexpr std::size_t index() const noexcept { + return impl_.index(); + } + + template < + bool Dummy = true, + lib::enable_if_t<lib::all<Dummy, + (std::is_move_constructible<Ts>::value && + lib::is_swappable<Ts>::value)...>::value, + int> = 0> + inline void swap(variant &that) noexcept( + lib::all<(std::is_nothrow_move_constructible<Ts>::value && + lib::is_nothrow_swappable<Ts>::value)...>::value) { + impl_.swap(that.impl_); + } + + private: + detail::impl<Ts...> impl_; + + friend struct detail::access::variant; + friend struct detail::visitation::variant; + }; + + template <std::size_t I, typename... Ts> + inline constexpr bool holds_alternative(const variant<Ts...> &v) noexcept { + return v.index() == I; + } + + template <typename T, typename... Ts> + inline constexpr bool holds_alternative(const variant<Ts...> &v) noexcept { + return holds_alternative<detail::find_index_checked<T, Ts...>::value>(v); + } + + namespace detail { + template <std::size_t I, typename V> + struct generic_get_impl { + constexpr generic_get_impl(int) {} + + constexpr AUTO_REFREF operator()(V &&v) const + AUTO_REFREF_RETURN( + access::variant::get_alt<I>(lib::forward<V>(v)).value) + }; + + template <std::size_t I, typename V> + inline constexpr AUTO_REFREF generic_get(V &&v) + AUTO_REFREF_RETURN(generic_get_impl<I, V>( + holds_alternative<I>(v) ? 0 : (throw_bad_variant_access(), 0))( + lib::forward<V>(v))) + } // namespace detail + + template <std::size_t I, typename... Ts> + inline constexpr variant_alternative_t<I, variant<Ts...>> &get( + variant<Ts...> &v) { + return detail::generic_get<I>(v); + } + + template <std::size_t I, typename... Ts> + inline constexpr variant_alternative_t<I, variant<Ts...>> &&get( + variant<Ts...> &&v) { + return detail::generic_get<I>(lib::move(v)); + } + + template <std::size_t I, typename... Ts> + inline constexpr const variant_alternative_t<I, variant<Ts...>> &get( + const variant<Ts...> &v) { + return detail::generic_get<I>(v); + } + + template <std::size_t I, typename... Ts> + inline constexpr const variant_alternative_t<I, variant<Ts...>> &&get( + const variant<Ts...> &&v) { + return detail::generic_get<I>(lib::move(v)); + } + + template <typename T, typename... Ts> + inline constexpr T &get(variant<Ts...> &v) { + return get<detail::find_index_checked<T, Ts...>::value>(v); + } + + template <typename T, typename... Ts> + inline constexpr T &&get(variant<Ts...> &&v) { + return get<detail::find_index_checked<T, Ts...>::value>(lib::move(v)); + } + + template <typename T, typename... Ts> + inline constexpr const T &get(const variant<Ts...> &v) { + return get<detail::find_index_checked<T, Ts...>::value>(v); + } + + template <typename T, typename... Ts> + inline constexpr const T &&get(const variant<Ts...> &&v) { + return get<detail::find_index_checked<T, Ts...>::value>(lib::move(v)); + } + + namespace detail { + + template <std::size_t I, typename V> + inline constexpr /* auto * */ AUTO generic_get_if(V *v) noexcept + AUTO_RETURN(v && holds_alternative<I>(*v) + ? lib::addressof(access::variant::get_alt<I>(*v).value) + : nullptr) + + } // namespace detail + + template <std::size_t I, typename... Ts> + inline constexpr lib::add_pointer_t<variant_alternative_t<I, variant<Ts...>>> + get_if(variant<Ts...> *v) noexcept { + return detail::generic_get_if<I>(v); + } + + template <std::size_t I, typename... Ts> + inline constexpr lib::add_pointer_t< + const variant_alternative_t<I, variant<Ts...>>> + get_if(const variant<Ts...> *v) noexcept { + return detail::generic_get_if<I>(v); + } + + template <typename T, typename... Ts> + inline constexpr lib::add_pointer_t<T> + get_if(variant<Ts...> *v) noexcept { + return get_if<detail::find_index_checked<T, Ts...>::value>(v); + } + + template <typename T, typename... Ts> + inline constexpr lib::add_pointer_t<const T> + get_if(const variant<Ts...> *v) noexcept { + return get_if<detail::find_index_checked<T, Ts...>::value>(v); + } + + template <typename... Ts> + inline constexpr bool operator==(const variant<Ts...> &lhs, + const variant<Ts...> &rhs) { + using detail::visitation::variant; + using lib::equal_to; +#ifdef MPARK_CPP14_CONSTEXPR + if (lhs.index() != rhs.index()) return false; + if (lhs.valueless_by_exception()) return true; + return variant::visit_value_at(lhs.index(), equal_to{}, lhs, rhs); +#else + return lhs.index() == rhs.index() && + (lhs.valueless_by_exception() || + variant::visit_value_at(lhs.index(), equal_to{}, lhs, rhs)); +#endif + } + + template <typename... Ts> + inline constexpr bool operator!=(const variant<Ts...> &lhs, + const variant<Ts...> &rhs) { + using detail::visitation::variant; + using lib::not_equal_to; +#ifdef MPARK_CPP14_CONSTEXPR + if (lhs.index() != rhs.index()) return true; + if (lhs.valueless_by_exception()) return false; + return variant::visit_value_at(lhs.index(), not_equal_to{}, lhs, rhs); +#else + return lhs.index() != rhs.index() || + (!lhs.valueless_by_exception() && + variant::visit_value_at(lhs.index(), not_equal_to{}, lhs, rhs)); +#endif + } + + template <typename... Ts> + inline constexpr bool operator<(const variant<Ts...> &lhs, + const variant<Ts...> &rhs) { + using detail::visitation::variant; + using lib::less; +#ifdef MPARK_CPP14_CONSTEXPR + if (rhs.valueless_by_exception()) return false; + if (lhs.valueless_by_exception()) return true; + if (lhs.index() < rhs.index()) return true; + if (lhs.index() > rhs.index()) return false; + return variant::visit_value_at(lhs.index(), less{}, lhs, rhs); +#else + return !rhs.valueless_by_exception() && + (lhs.valueless_by_exception() || lhs.index() < rhs.index() || + (lhs.index() == rhs.index() && + variant::visit_value_at(lhs.index(), less{}, lhs, rhs))); +#endif + } + + template <typename... Ts> + inline constexpr bool operator>(const variant<Ts...> &lhs, + const variant<Ts...> &rhs) { + using detail::visitation::variant; + using lib::greater; +#ifdef MPARK_CPP14_CONSTEXPR + if (lhs.valueless_by_exception()) return false; + if (rhs.valueless_by_exception()) return true; + if (lhs.index() > rhs.index()) return true; + if (lhs.index() < rhs.index()) return false; + return variant::visit_value_at(lhs.index(), greater{}, lhs, rhs); +#else + return !lhs.valueless_by_exception() && + (rhs.valueless_by_exception() || lhs.index() > rhs.index() || + (lhs.index() == rhs.index() && + variant::visit_value_at(lhs.index(), greater{}, lhs, rhs))); +#endif + } + + template <typename... Ts> + inline constexpr bool operator<=(const variant<Ts...> &lhs, + const variant<Ts...> &rhs) { + using detail::visitation::variant; + using lib::less_equal; +#ifdef MPARK_CPP14_CONSTEXPR + if (lhs.valueless_by_exception()) return true; + if (rhs.valueless_by_exception()) return false; + if (lhs.index() < rhs.index()) return true; + if (lhs.index() > rhs.index()) return false; + return variant::visit_value_at(lhs.index(), less_equal{}, lhs, rhs); +#else + return lhs.valueless_by_exception() || + (!rhs.valueless_by_exception() && + (lhs.index() < rhs.index() || + (lhs.index() == rhs.index() && + variant::visit_value_at(lhs.index(), less_equal{}, lhs, rhs)))); +#endif + } + + template <typename... Ts> + inline constexpr bool operator>=(const variant<Ts...> &lhs, + const variant<Ts...> &rhs) { + using detail::visitation::variant; + using lib::greater_equal; +#ifdef MPARK_CPP14_CONSTEXPR + if (rhs.valueless_by_exception()) return true; + if (lhs.valueless_by_exception()) return false; + if (lhs.index() > rhs.index()) return true; + if (lhs.index() < rhs.index()) return false; + return variant::visit_value_at(lhs.index(), greater_equal{}, lhs, rhs); +#else + return rhs.valueless_by_exception() || + (!lhs.valueless_by_exception() && + (lhs.index() > rhs.index() || + (lhs.index() == rhs.index() && + variant::visit_value_at( + lhs.index(), greater_equal{}, lhs, rhs)))); +#endif + } + + template <typename Visitor, typename... Vs> + inline constexpr DECLTYPE_AUTO visit(Visitor &&visitor, Vs &&... vs) + DECLTYPE_AUTO_RETURN( + (detail::all(!vs.valueless_by_exception()...) + ? (void)0 + : throw_bad_variant_access()), + detail::visitation::variant::visit_value(lib::forward<Visitor>(visitor), + lib::forward<Vs>(vs)...)) + + struct monostate {}; + + inline constexpr bool operator<(monostate, monostate) noexcept { + return false; + } + + inline constexpr bool operator>(monostate, monostate) noexcept { + return false; + } + + inline constexpr bool operator<=(monostate, monostate) noexcept { + return true; + } + + inline constexpr bool operator>=(monostate, monostate) noexcept { + return true; + } + + inline constexpr bool operator==(monostate, monostate) noexcept { + return true; + } + + inline constexpr bool operator!=(monostate, monostate) noexcept { + return false; + } + + template <typename... Ts> + inline auto swap(variant<Ts...> &lhs, + variant<Ts...> &rhs) noexcept(noexcept(lhs.swap(rhs))) + -> decltype(lhs.swap(rhs)) { + lhs.swap(rhs); + } + + namespace detail { + + template <typename T, typename...> + using enabled_type = T; + + namespace hash { + + template <typename H, typename K> + constexpr bool meets_requirements() { + return std::is_copy_constructible<H>::value && + std::is_move_constructible<H>::value && + lib::is_invocable_r<std::size_t, H, const K &>::value; + } + + template <typename K> + constexpr bool is_enabled() { + using H = std::hash<K>; + return meets_requirements<H, K>() && + std::is_default_constructible<H>::value && + std::is_copy_assignable<H>::value && + std::is_move_assignable<H>::value; + } + + } // namespace hash + + } // namespace detail + +#undef AUTO +#undef AUTO_RETURN + +#undef AUTO_REFREF +#undef AUTO_REFREF_RETURN + +#undef DECLTYPE_AUTO +#undef DECLTYPE_AUTO_RETURN + +} // namespace mpark + +namespace std { + + template <typename... Ts> + struct hash<mpark::detail::enabled_type< + mpark::variant<Ts...>, + mpark::lib::enable_if_t<mpark::lib::all<mpark::detail::hash::is_enabled< + mpark::lib::remove_const_t<Ts>>()...>::value>>> { + using argument_type = mpark::variant<Ts...>; + using result_type = std::size_t; + + inline result_type operator()(const argument_type &v) const { + using mpark::detail::visitation::variant; + std::size_t result = + v.valueless_by_exception() + ? 299792458 // Random value chosen by the universe upon creation + : variant::visit_alt( +#ifdef MPARK_GENERIC_LAMBDAS + [](const auto &alt) { + using alt_type = mpark::lib::decay_t<decltype(alt)>; + using value_type = mpark::lib::remove_const_t< + typename alt_type::value_type>; + return hash<value_type>{}(alt.value); + } +#else + hasher{} +#endif + , + v); + return hash_combine(result, hash<std::size_t>{}(v.index())); + } + + private: +#ifndef MPARK_GENERIC_LAMBDAS + struct hasher { + template <typename Alt> + inline std::size_t operator()(const Alt &alt) const { + using alt_type = mpark::lib::decay_t<Alt>; + using value_type = + mpark::lib::remove_const_t<typename alt_type::value_type>; + return hash<value_type>{}(alt.value); + } + }; +#endif + + static std::size_t hash_combine(std::size_t lhs, std::size_t rhs) { + return lhs ^= rhs + 0x9e3779b9 + (lhs << 6) + (lhs >> 2); + } + }; + + template <> + struct hash<mpark::monostate> { + using argument_type = mpark::monostate; + using result_type = std::size_t; + + inline result_type operator()(const argument_type &) const noexcept { + return 66740831; // return a fundamentally attractive random value. + } + }; + +} // namespace std + +#endif // MPARK_VARIANT_HPP diff --git a/include/Nbt.hpp b/src/Nbt.hpp index 03f5af0..03f5af0 100644 --- a/include/Nbt.hpp +++ b/src/Nbt.hpp diff --git a/include/Utility.hpp b/src/Utility.hpp index 11b4ff7..11b4ff7 100644 --- a/include/Utility.hpp +++ b/src/Utility.hpp diff --git a/include/Vector.hpp b/src/Vector.hpp index a2d5c6a..a2d5c6a 100644 --- a/include/Vector.hpp +++ b/src/Vector.hpp diff --git a/src/core/AssetManager.cpp b/src/core/AssetManager.cpp index d263c4a..14ea677 100644 --- a/src/core/AssetManager.cpp +++ b/src/core/AssetManager.cpp @@ -1,4 +1,4 @@ -#include <AssetManager.hpp> +#include <core/AssetManager.hpp> namespace fs = std::experimental::filesystem; diff --git a/include/AssetManager.hpp b/src/core/AssetManager.hpp index 26c7eca..26c7eca 100644 --- a/include/AssetManager.hpp +++ b/src/core/AssetManager.hpp diff --git a/src/core/Core.cpp b/src/core/Core.cpp index 44e2648..e98d204 100644 --- a/src/core/Core.cpp +++ b/src/core/Core.cpp @@ -44,7 +44,7 @@ void Core::Exec() { UpdateChunksToRender(); } - /*std::ostringstream toWindow; + std::ostringstream toWindow; auto camPos = gameState->Position(); auto velPos = glm::vec3(gameState->g_PlayerVelocityX, gameState->g_PlayerVelocityY, gameState->g_PlayerVelocityZ); @@ -57,7 +57,7 @@ void Core::Exec() { toWindow << " (" << deltaTime * 1000 << "ms); "; toWindow << "Tickrate: " << tickRate << " (" << (1.0 / tickRate * 1000) << "ms); "; toWindow << "Sections: " << sectionRate << " (" << (1.0 / sectionRate * 1000) << "ms); "; - window->setTitle(toWindow.str());*/ + window->setTitle(toWindow.str()); HandleEvents(); if (isMouseCaptured) HandleMouseCapture(); diff --git a/include/Core.hpp b/src/core/Core.hpp index 8d60ff6..fdbb377 100644 --- a/include/Core.hpp +++ b/src/core/Core.hpp @@ -8,8 +8,8 @@ #include <GL/glew.h> #include <glm/gtc/type_ptr.hpp> -#include <GameState.hpp> -#include <AssetManager.hpp> +#include <world/GameState.hpp> +#include <core/AssetManager.hpp> #include <graphics/Shader.hpp> #include <graphics/Gui.hpp> #include <graphics/RenderSection.hpp> @@ -79,7 +79,7 @@ class Core { std::map<Vector, RenderSection> availableChunks; std::mutex availableChunksMutex; - int ChunkDistance = 1; + int ChunkDistance = 3; RenderState renderState; diff --git a/src/core/Event.cpp b/src/core/Event.cpp new file mode 100644 index 0000000..10b2eaa --- /dev/null +++ b/src/core/Event.cpp @@ -0,0 +1,76 @@ +#include <core/Event.hpp> +#include <easylogging++.h> + +std::queue <Event> EventAgregator::eventsToHandle; +std::mutex EventAgregator::queueMutex; +bool EventAgregator::isStarted = false; +std::vector<EventListener*> EventAgregator::listeners; +std::mutex EventAgregator::listenersMutex; + +void EventAgregator::EventHandlingLoop() { + while (true) { + queueMutex.lock(); + if (!eventsToHandle.empty()) { + auto queue = eventsToHandle; + while (!eventsToHandle.empty()) + eventsToHandle.pop(); + queueMutex.unlock(); + + while (!queue.empty()) { + auto event = queue.front(); + listenersMutex.lock(); + for (auto& listener : listeners) { + LOG(INFO)<<"Listener notified about event"; + listener->PushEvent(event); + } + listenersMutex.unlock(); + queue.pop(); + } + + queueMutex.lock(); + } + queueMutex.unlock(); + } +} + +void EventAgregator::RegisterListener(EventListener &listener) { + listenersMutex.lock(); + LOG(INFO)<<"Registered handler "<<&listener; + listeners.push_back(&listener); + listenersMutex.unlock(); +} + +void EventAgregator::UnregisterListener(EventListener &listener) { + listenersMutex.lock(); + LOG(INFO)<<"Unregistered handler "<<&listener; + listeners.erase(std::find(listeners.begin(), listeners.end(), &listener)); + listenersMutex.unlock(); +} + + + +EventListener::EventListener() { + EventAgregator::RegisterListener(*this); +} + +EventListener::~EventListener() { + EventAgregator::UnregisterListener(*this); +} + +void EventListener::PushEvent(Event event) { + eventsMutex.lock(); + LOG(INFO)<<"Pushed event to queue"; + events.push(event); + eventsMutex.unlock(); +} + +/*void EventListener::RegisterHandler(EventType type, std::function<void(void*)> handler) { + handlers[type] = handler; +}*/ + +bool EventListener::IsEventsQueueIsNotEmpty() { + eventsMutex.lock(); + bool value = !events.empty(); + eventsMutex.unlock(); + return value; +}
\ No newline at end of file diff --git a/src/core/Event.hpp b/src/core/Event.hpp new file mode 100644 index 0000000..cfa990a --- /dev/null +++ b/src/core/Event.hpp @@ -0,0 +1,96 @@ +#pragma once + +#include <queue> +#include <map> +#include <thread> +#include <mutex> +#include <condition_variable> +#include <chrono> +#include <variant> +#include <functional> + +#include <Vector.hpp> + +enum class EventType { + Echo, + ChunkChanged, +}; + +struct EchoData { + std::chrono::time_point<std::chrono::high_resolution_clock> time; +}; + +struct ChunkChangedData { + Vector chunkPosition; +}; + +using EventData = std::variant<EchoData, ChunkChangedData>; + +struct Event { + EventType type; + EventData data; +}; + +class EventListener { + friend class EventAgregator; + + using HandlerFunc = std::function<void(EventData)>; + + std::map<EventType, HandlerFunc> handlers; //TODO: There must be more elegant solution than std::variant of all data + + std::mutex eventsMutex; + + std::queue<Event> events; + + void PushEvent(Event event); + +public: + EventListener(); + ~EventListener(); + bool IsEventsQueueIsNotEmpty(); + + void RegisterHandler(EventType type, HandlerFunc handler) { + handlers[type] = handler; + } + + void HandleEvent() { + eventsMutex.lock(); + if (events.empty()) { + eventsMutex.unlock(); + return; + } + Event event = events.front(); + events.pop(); + eventsMutex.unlock(); + auto function = handlers[event.type]; + function(event.data); + } +}; + +class EventAgregator { + friend EventListener; + + EventAgregator() = default; + static std::queue<Event> eventsToHandle; + static std::mutex queueMutex; + static bool isStarted; + static std::vector<EventListener *> listeners; + static std::mutex listenersMutex; + + static void EventHandlingLoop(); + + static void RegisterListener(EventListener &listener); + static void UnregisterListener(EventListener &listener); + +public: + static void PushEvent(EventType type, EventData data) { + if (!isStarted) { + isStarted = true; + std::thread(&EventAgregator::EventHandlingLoop).detach(); + } + Event event; + event.type = type; + event.data = data; + eventsToHandle.push(event); + } +};
\ No newline at end of file diff --git a/include/graphics/Gui.hpp b/src/graphics/Gui.hpp index 641b941..e22a0a7 100644 --- a/include/graphics/Gui.hpp +++ b/src/graphics/Gui.hpp @@ -4,4 +4,5 @@ class Gui { public: int WHY=0; + }; diff --git a/src/graphics/RenderSection.cpp b/src/graphics/RenderSection.cpp index 90d4329..ae072d6 100644 --- a/src/graphics/RenderSection.cpp +++ b/src/graphics/RenderSection.cpp @@ -138,7 +138,7 @@ RenderSection::~RenderSection() { refCounterVao[Vao]--; if (refCounterVbo[VboTextures] <= 0) glDeleteBuffers(1, &VboTextures); - + if (refCounterVbo[VboModels] <= 0) glDeleteBuffers(1, &VboTextures); if (refCounterVbo[VboColors] <= 0) @@ -297,13 +297,11 @@ void RenderSection::UpdateState(const std::map<BlockTextureId, glm::vec4> &textu } } numOfFaces = textures.size(); - hash = section.GetHash(); + hash = section.GetHash(); } void RenderSection::Render(RenderState &state) { - if (!isEnabled) { - return; - } + if (!isEnabled) return; if (!models.empty()) { glBindBuffer(GL_ARRAY_BUFFER, VboTextures); glBufferData(GL_ARRAY_BUFFER, textures.size() * sizeof(glm::vec4), textures.data(), GL_DYNAMIC_DRAW); @@ -339,7 +337,7 @@ RenderSection::RenderSection(const RenderSection &other) { this->models = other.models; this->textures = other.textures; this->colors = other.colors; - this->hash = other.hash; + this->hash = other.hash; refCounterVbo[VboTextures]++; refCounterVbo[VboModels]++; @@ -348,11 +346,11 @@ RenderSection::RenderSection(const RenderSection &other) { } void RenderSection::SetEnabled(bool isEnabled) { - this->isEnabled = isEnabled; + this->isEnabled = isEnabled; } bool RenderSection::IsNeedUpdate() { - size_t currentHash = world->GetSection(sectionPosition).GetHash(); - bool isNeedUpdate = currentHash != hash; - return isNeedUpdate; + size_t currentHash = world->GetSection(sectionPosition).GetHash(); + bool isNeedUpdate = currentHash != hash; + return isNeedUpdate; }
\ No newline at end of file diff --git a/include/graphics/RenderSection.hpp b/src/graphics/RenderSection.hpp index 58c4acf..5973909 100644 --- a/include/graphics/RenderSection.hpp +++ b/src/graphics/RenderSection.hpp @@ -7,7 +7,7 @@ #include <glm/gtx/transform.hpp> #include <easylogging++.h> -#include <AssetManager.hpp> +#include <core/AssetManager.hpp> #include <world/Section.hpp> #include <world/World.hpp> diff --git a/include/graphics/Shader.hpp b/src/graphics/Shader.hpp index 17a434e..17a434e 100644 --- a/include/graphics/Shader.hpp +++ b/src/graphics/Shader.hpp diff --git a/include/graphics/Texture.hpp b/src/graphics/Texture.hpp index 277806a..277806a 100644 --- a/include/graphics/Texture.hpp +++ b/src/graphics/Texture.hpp diff --git a/include/graphics/Widget.hpp b/src/graphics/Widget.hpp index c4d5dc1..c4d5dc1 100644 --- a/include/graphics/Widget.hpp +++ b/src/graphics/Widget.hpp diff --git a/src/main.cpp b/src/main.cpp index aa30ff8..bcf573b 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -1,4 +1,5 @@ -#include "../include/Core.hpp" +#include "core/Core.hpp" +#include <core/Event.hpp> const char *getTimeSinceProgramStart(void) { static auto initialTime = std::chrono::steady_clock().now(); @@ -25,6 +26,8 @@ int main() { el::Loggers::addFlag(el::LoggingFlag::ColoredTerminalOutput); LOG(INFO) << "Logger is configured"; + LOG(FATAL)<<"Sizeof data is "<<sizeof(EventData); + Core core; core.Exec(); diff --git a/src/network/Network.cpp b/src/network/Network.cpp index 91cb481..798756d 100644 --- a/src/network/Network.cpp +++ b/src/network/Network.cpp @@ -1,8 +1,12 @@ #include <network/Network.hpp> Network::Network(std::string address, unsigned short port) { - socket = new Socket(address, port); - stream = new StreamSocket(socket); + try { + socket = new Socket(address, port); + stream = new StreamSocket(socket); + } catch (std::exception &e) { + LOG(FATAL)<<e.what(); + } } Network::~Network() { diff --git a/include/network/Network.hpp b/src/network/Network.hpp index 1281289..1281289 100644 --- a/include/network/Network.hpp +++ b/src/network/Network.hpp diff --git a/include/network/NetworkClient.hpp b/src/network/NetworkClient.hpp index 22b1b22..22b1b22 100644 --- a/include/network/NetworkClient.hpp +++ b/src/network/NetworkClient.hpp diff --git a/include/network/Packet.hpp b/src/network/Packet.hpp index 685e3da..685e3da 100644 --- a/include/network/Packet.hpp +++ b/src/network/Packet.hpp diff --git a/include/network/Socket.hpp b/src/network/Socket.hpp index 48bcad9..48bcad9 100644 --- a/include/network/Socket.hpp +++ b/src/network/Socket.hpp diff --git a/include/network/Stream.hpp b/src/network/Stream.hpp index a24dfbe..a24dfbe 100644 --- a/include/network/Stream.hpp +++ b/src/network/Stream.hpp diff --git a/include/world/Block.hpp b/src/world/Block.hpp index 2f823fe..2f823fe 100644 --- a/include/world/Block.hpp +++ b/src/world/Block.hpp diff --git a/include/world/Collision.hpp b/src/world/Collision.hpp index b88fbf7..b88fbf7 100644 --- a/include/world/Collision.hpp +++ b/src/world/Collision.hpp diff --git a/src/world/GameState.cpp b/src/world/GameState.cpp index 79e2f1b..d3a6bd3 100644 --- a/src/world/GameState.cpp +++ b/src/world/GameState.cpp @@ -1,4 +1,4 @@ -#include <GameState.hpp> +#include <world/GameState.hpp> GameState::GameState(NetworkClient *Net, bool &quit) : nc(Net), isRunning(quit) { Front = glm::vec3(0.0f, 0.0f, -1.0f); diff --git a/include/GameState.hpp b/src/world/GameState.hpp index 6741882..6741882 100644 --- a/include/GameState.hpp +++ b/src/world/GameState.hpp diff --git a/src/world/Section.cpp b/src/world/Section.cpp index 279d2b2..ff2a4fb 100644 --- a/src/world/Section.cpp +++ b/src/world/Section.cpp @@ -47,28 +47,28 @@ void Section::Parse() { endswap(&longArray[i]); std::vector<unsigned short> blocks; blocks.reserve(4096); - { - auto begin = std::chrono::steady_clock::now(); - int bitPos = 0; - unsigned short t = 0; - for (size_t i = 0; i < m_dataBlocksLen; i++) { - for (int j = 0; j < 8; j++) { - t |= (m_dataBlocks[i] & 0x01) ? 0x80 : 0x00; - t >>= 1; - m_dataBlocks[i] >>= 1; - bitPos++; - if (bitPos >= m_bitsPerBlock) { - bitPos = 0; - t >>= m_bitsPerBlock - 1; - blocks.push_back(t); - t = 0; - } - } - } - auto end = std::chrono::steady_clock::now(); - std::chrono::duration<double, std::milli> time = end - begin; - totalParsingTime += time.count(); - } + { + auto begin = std::chrono::steady_clock::now(); + int bitPos = 0; + unsigned short t = 0; + for (size_t i = 0; i < m_dataBlocksLen; i++) { + for (int j = 0; j < 8; j++) { + t |= (m_dataBlocks[i] & 0x01) ? 0x80 : 0x00; + t >>= 1; + m_dataBlocks[i] >>= 1; + bitPos++; + if (bitPos >= m_bitsPerBlock) { + bitPos = 0; + t >>= m_bitsPerBlock - 1; + blocks.push_back(t); + t = 0; + } + } + } + auto end = std::chrono::steady_clock::now(); + std::chrono::duration<double, std::milli> time = end - begin; + totalParsingTime += time.count(); + } std::vector<byte> light; light.reserve(4096); for (int i = 0; i < 2048; i++) { @@ -137,8 +137,11 @@ Vector Section::GetPosition() { } size_t Section::GetHash() { - if (m_blocks.empty()) - return 0; - std::string str((unsigned char*)m_blocks.data(), (unsigned char*)m_blocks.data() + m_blocks.size() * sizeof(Block)); - return std::hash<std::string>{}(str); + if (m_blocks.empty()) return 0; + + unsigned char *from = reinterpret_cast<unsigned char *>(m_blocks.data()); + size_t length = m_blocks.size() * sizeof(Block); + + std::string str(from, from + length); + return std::hash<std::string>{}(str); }
\ No newline at end of file diff --git a/include/world/Section.hpp b/src/world/Section.hpp index 2df0cfe..2df0cfe 100644 --- a/include/world/Section.hpp +++ b/src/world/Section.hpp diff --git a/include/world/World.hpp b/src/world/World.hpp index 6b09f1f..6b09f1f 100644 --- a/include/world/World.hpp +++ b/src/world/World.hpp |