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Merge pull request #7268 from Morph1984/expected-resultval
common, result: Implement a subset of std::expected and use it in ResultVal
This commit is contained in:
Mai M
GitHub
commit
3d1f2bb3aa
15 changed files with 1125 additions and 214 deletions
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@ -55,6 +55,7 @@ add_library(common STATIC
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dynamic_library.h
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error.cpp
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error.h
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expected.h
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fiber.cpp
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fiber.h
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fs/file.cpp
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987
src/common/expected.h
Normal file
987
src/common/expected.h
Normal file
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@ -0,0 +1,987 @@
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// Copyright 2021 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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// This is based on the proposed implementation of std::expected (P0323)
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// https://github.com/TartanLlama/expected/blob/master/include/tl/expected.hpp
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#pragma once
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#include <type_traits>
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#include <utility>
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namespace Common {
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template <typename T, typename E>
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class Expected;
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template <typename E>
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class Unexpected {
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public:
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Unexpected() = delete;
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constexpr explicit Unexpected(const E& e) : m_val{e} {}
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constexpr explicit Unexpected(E&& e) : m_val{std::move(e)} {}
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constexpr E& value() & {
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return m_val;
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}
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constexpr const E& value() const& {
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return m_val;
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}
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constexpr E&& value() && {
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return std::move(m_val);
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}
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constexpr const E&& value() const&& {
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return std::move(m_val);
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}
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private:
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E m_val;
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};
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template <typename E>
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constexpr auto operator<=>(const Unexpected<E>& lhs, const Unexpected<E>& rhs) {
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return lhs.value() <=> rhs.value();
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}
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struct unexpect_t {
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constexpr explicit unexpect_t() = default;
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};
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namespace detail {
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struct no_init_t {
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constexpr explicit no_init_t() = default;
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};
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/**
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* This specialization is for when T is not trivially destructible,
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* so the destructor must be called on destruction of `expected'
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* Additionally, this requires E to be trivially destructible
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*/
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template <typename T, typename E, bool = std::is_trivially_destructible_v<T>>
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requires std::is_trivially_destructible_v<E>
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struct expected_storage_base {
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constexpr expected_storage_base() : m_val{T{}}, m_has_val{true} {}
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constexpr expected_storage_base(no_init_t) : m_has_val{false} {}
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template <typename... Args, std::enable_if_t<std::is_constructible_v<T, Args&&...>>* = nullptr>
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constexpr expected_storage_base(std::in_place_t, Args&&... args)
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: m_val{std::forward<Args>(args)...}, m_has_val{true} {}
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template <typename U, typename... Args,
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std::enable_if_t<std::is_constructible_v<T, std::initializer_list<U>&, Args&&...>>* =
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nullptr>
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constexpr expected_storage_base(std::in_place_t, std::initializer_list<U> il, Args&&... args)
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: m_val{il, std::forward<Args>(args)...}, m_has_val{true} {}
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template <typename... Args, std::enable_if_t<std::is_constructible_v<E, Args&&...>>* = nullptr>
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constexpr explicit expected_storage_base(unexpect_t, Args&&... args)
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: m_unexpect{std::forward<Args>(args)...}, m_has_val{false} {}
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template <typename U, typename... Args,
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std::enable_if_t<std::is_constructible_v<E, std::initializer_list<U>&, Args&&...>>* =
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nullptr>
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constexpr explicit expected_storage_base(unexpect_t, std::initializer_list<U> il,
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Args&&... args)
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: m_unexpect{il, std::forward<Args>(args)...}, m_has_val{false} {}
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~expected_storage_base() {
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if (m_has_val) {
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m_val.~T();
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}
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}
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union {
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T m_val;
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Unexpected<E> m_unexpect;
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};
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bool m_has_val;
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};
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/**
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* This specialization is for when T is trivially destructible,
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* so the destructor of `expected` can be trivial
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* Additionally, this requires E to be trivially destructible
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*/
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template <typename T, typename E>
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requires std::is_trivially_destructible_v<E>
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struct expected_storage_base<T, E, true> {
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constexpr expected_storage_base() : m_val{T{}}, m_has_val{true} {}
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constexpr expected_storage_base(no_init_t) : m_has_val{false} {}
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template <typename... Args, std::enable_if_t<std::is_constructible_v<T, Args&&...>>* = nullptr>
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constexpr expected_storage_base(std::in_place_t, Args&&... args)
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: m_val{std::forward<Args>(args)...}, m_has_val{true} {}
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template <typename U, typename... Args,
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std::enable_if_t<std::is_constructible_v<T, std::initializer_list<U>&, Args&&...>>* =
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nullptr>
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constexpr expected_storage_base(std::in_place_t, std::initializer_list<U> il, Args&&... args)
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: m_val{il, std::forward<Args>(args)...}, m_has_val{true} {}
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template <typename... Args, std::enable_if_t<std::is_constructible_v<E, Args&&...>>* = nullptr>
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constexpr explicit expected_storage_base(unexpect_t, Args&&... args)
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: m_unexpect{std::forward<Args>(args)...}, m_has_val{false} {}
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template <typename U, typename... Args,
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std::enable_if_t<std::is_constructible_v<E, std::initializer_list<U>&, Args&&...>>* =
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nullptr>
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constexpr explicit expected_storage_base(unexpect_t, std::initializer_list<U> il,
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Args&&... args)
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: m_unexpect{il, std::forward<Args>(args)...}, m_has_val{false} {}
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~expected_storage_base() = default;
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union {
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T m_val;
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Unexpected<E> m_unexpect;
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};
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bool m_has_val;
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};
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template <typename T, typename E>
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struct expected_operations_base : expected_storage_base<T, E> {
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using expected_storage_base<T, E>::expected_storage_base;
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template <typename... Args>
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void construct(Args&&... args) noexcept {
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new (std::addressof(this->m_val)) T{std::forward<Args>(args)...};
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this->m_has_val = true;
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}
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template <typename Rhs>
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void construct_with(Rhs&& rhs) noexcept {
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new (std::addressof(this->m_val)) T{std::forward<Rhs>(rhs).get()};
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this->m_has_val = true;
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}
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template <typename... Args>
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void construct_error(Args&&... args) noexcept {
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new (std::addressof(this->m_unexpect)) Unexpected<E>{std::forward<Args>(args)...};
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this->m_has_val = false;
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}
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void assign(const expected_operations_base& rhs) noexcept {
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if (!this->m_has_val && rhs.m_has_val) {
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geterr().~Unexpected<E>();
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construct(rhs.get());
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} else {
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assign_common(rhs);
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}
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}
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void assign(expected_operations_base&& rhs) noexcept {
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if (!this->m_has_val && rhs.m_has_val) {
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geterr().~Unexpected<E>();
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construct(std::move(rhs).get());
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} else {
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assign_common(rhs);
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}
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}
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template <typename Rhs>
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void assign_common(Rhs&& rhs) {
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if (this->m_has_val) {
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if (rhs.m_has_val) {
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get() = std::forward<Rhs>(rhs).get();
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} else {
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destroy_val();
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construct_error(std::forward<Rhs>(rhs).geterr());
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}
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} else {
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if (!rhs.m_has_val) {
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geterr() = std::forward<Rhs>(rhs).geterr();
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}
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}
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}
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bool has_value() const {
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return this->m_has_val;
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}
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constexpr T& get() & {
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return this->m_val;
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}
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constexpr const T& get() const& {
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return this->m_val;
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}
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constexpr T&& get() && {
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return std::move(this->m_val);
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}
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constexpr const T&& get() const&& {
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return std::move(this->m_val);
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}
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constexpr Unexpected<E>& geterr() & {
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return this->m_unexpect;
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}
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constexpr const Unexpected<E>& geterr() const& {
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return this->m_unexpect;
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}
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constexpr Unexpected<E>&& geterr() && {
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return std::move(this->m_unexpect);
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}
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constexpr const Unexpected<E>&& geterr() const&& {
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return std::move(this->m_unexpect);
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}
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constexpr void destroy_val() {
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get().~T();
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}
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};
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/**
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* This manages conditionally having a trivial copy constructor
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* This specialization is for when T is trivially copy constructible
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* Additionally, this requires E to be trivially copy constructible
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*/
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template <typename T, typename E, bool = std::is_trivially_copy_constructible_v<T>>
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requires std::is_trivially_copy_constructible_v<E>
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struct expected_copy_base : expected_operations_base<T, E> {
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using expected_operations_base<T, E>::expected_operations_base;
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};
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/**
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* This specialization is for when T is not trivially copy constructible
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* Additionally, this requires E to be trivially copy constructible
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*/
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template <typename T, typename E>
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requires std::is_trivially_copy_constructible_v<E>
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struct expected_copy_base<T, E, false> : expected_operations_base<T, E> {
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using expected_operations_base<T, E>::expected_operations_base;
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expected_copy_base() = default;
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expected_copy_base(const expected_copy_base& rhs)
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: expected_operations_base<T, E>{no_init_t{}} {
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if (rhs.has_value()) {
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this->construct_with(rhs);
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} else {
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this->construct_error(rhs.geterr());
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}
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}
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expected_copy_base(expected_copy_base&&) = default;
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expected_copy_base& operator=(const expected_copy_base&) = default;
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expected_copy_base& operator=(expected_copy_base&&) = default;
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};
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/**
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* This manages conditionally having a trivial move constructor
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* This specialization is for when T is trivially move constructible
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* Additionally, this requires E to be trivially move constructible
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*/
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template <typename T, typename E, bool = std::is_trivially_move_constructible_v<T>>
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requires std::is_trivially_move_constructible_v<E>
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struct expected_move_base : expected_copy_base<T, E> {
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using expected_copy_base<T, E>::expected_copy_base;
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};
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/**
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* This specialization is for when T is not trivially move constructible
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* Additionally, this requires E to be trivially move constructible
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*/
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template <typename T, typename E>
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requires std::is_trivially_move_constructible_v<E>
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struct expected_move_base<T, E, false> : expected_copy_base<T, E> {
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using expected_copy_base<T, E>::expected_copy_base;
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expected_move_base() = default;
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expected_move_base(const expected_move_base&) = default;
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expected_move_base(expected_move_base&& rhs) noexcept(std::is_nothrow_move_constructible_v<T>)
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: expected_copy_base<T, E>{no_init_t{}} {
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if (rhs.has_value()) {
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this->construct_with(std::move(rhs));
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} else {
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this->construct_error(std::move(rhs.geterr()));
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}
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}
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expected_move_base& operator=(const expected_move_base&) = default;
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expected_move_base& operator=(expected_move_base&&) = default;
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};
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/**
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* This manages conditionally having a trivial copy assignment operator
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* This specialization is for when T is trivially copy assignable
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* Additionally, this requires E to be trivially copy assignable
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*/
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template <typename T, typename E,
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bool = std::conjunction_v<std::is_trivially_copy_assignable<T>,
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std::is_trivially_copy_constructible<T>,
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std::is_trivially_destructible<T>>>
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requires std::conjunction_v<std::is_trivially_copy_assignable<E>,
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std::is_trivially_copy_constructible<E>,
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std::is_trivially_destructible<E>>
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struct expected_copy_assign_base : expected_move_base<T, E> {
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using expected_move_base<T, E>::expected_move_base;
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};
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/**
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* This specialization is for when T is not trivially copy assignable
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* Additionally, this requires E to be trivially copy assignable
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*/
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template <typename T, typename E>
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requires std::conjunction_v<std::is_trivially_copy_assignable<E>,
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std::is_trivially_copy_constructible<E>,
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std::is_trivially_destructible<E>>
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struct expected_copy_assign_base<T, E, false> : expected_move_base<T, E> {
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using expected_move_base<T, E>::expected_move_base;
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expected_copy_assign_base() = default;
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expected_copy_assign_base(const expected_copy_assign_base&) = default;
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expected_copy_assign_base(expected_copy_assign_base&&) = default;
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expected_copy_assign_base& operator=(const expected_copy_assign_base& rhs) {
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this->assign(rhs);
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return *this;
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}
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expected_copy_assign_base& operator=(expected_copy_assign_base&&) = default;
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};
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/**
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* This manages conditionally having a trivial move assignment operator
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* This specialization is for when T is trivially move assignable
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* Additionally, this requires E to be trivially move assignable
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*/
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template <typename T, typename E,
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bool = std::conjunction_v<std::is_trivially_move_assignable<T>,
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std::is_trivially_move_constructible<T>,
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std::is_trivially_destructible<T>>>
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requires std::conjunction_v<std::is_trivially_move_assignable<E>,
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std::is_trivially_move_constructible<E>,
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std::is_trivially_destructible<E>>
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struct expected_move_assign_base : expected_copy_assign_base<T, E> {
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using expected_copy_assign_base<T, E>::expected_copy_assign_base;
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};
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/**
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* This specialization is for when T is not trivially move assignable
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* Additionally, this requires E to be trivially move assignable
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*/
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template <typename T, typename E>
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requires std::conjunction_v<std::is_trivially_move_assignable<E>,
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std::is_trivially_move_constructible<E>,
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std::is_trivially_destructible<E>>
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struct expected_move_assign_base<T, E, false> : expected_copy_assign_base<T, E> {
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using expected_copy_assign_base<T, E>::expected_copy_assign_base;
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expected_move_assign_base() = default;
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expected_move_assign_base(const expected_move_assign_base&) = default;
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expected_move_assign_base(expected_move_assign_base&&) = default;
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expected_move_assign_base& operator=(const expected_move_assign_base&) = default;
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expected_move_assign_base& operator=(expected_move_assign_base&& rhs) noexcept(
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std::conjunction_v<std::is_nothrow_move_constructible<T>,
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std::is_nothrow_move_assignable<T>>) {
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this->assign(std::move(rhs));
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return *this;
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}
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};
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/**
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* expected_delete_ctor_base will conditionally delete copy and move constructors
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* depending on whether T is copy/move constructible
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* Additionally, this requires E to be copy/move constructible
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*/
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template <typename T, typename E, bool EnableCopy = std::is_copy_constructible_v<T>,
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bool EnableMove = std::is_move_constructible_v<T>>
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requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>>
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struct expected_delete_ctor_base {
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expected_delete_ctor_base() = default;
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expected_delete_ctor_base(const expected_delete_ctor_base&) = default;
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expected_delete_ctor_base(expected_delete_ctor_base&&) noexcept = default;
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expected_delete_ctor_base& operator=(const expected_delete_ctor_base&) = default;
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expected_delete_ctor_base& operator=(expected_delete_ctor_base&&) noexcept = default;
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};
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template <typename T, typename E>
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requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>>
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struct expected_delete_ctor_base<T, E, true, false> {
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expected_delete_ctor_base() = default;
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expected_delete_ctor_base(const expected_delete_ctor_base&) = default;
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expected_delete_ctor_base(expected_delete_ctor_base&&) noexcept = delete;
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expected_delete_ctor_base& operator=(const expected_delete_ctor_base&) = default;
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expected_delete_ctor_base& operator=(expected_delete_ctor_base&&) noexcept = default;
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};
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template <typename T, typename E>
|
||||
requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>>
|
||||
struct expected_delete_ctor_base<T, E, false, true> {
|
||||
expected_delete_ctor_base() = default;
|
||||
expected_delete_ctor_base(const expected_delete_ctor_base&) = delete;
|
||||
expected_delete_ctor_base(expected_delete_ctor_base&&) noexcept = default;
|
||||
expected_delete_ctor_base& operator=(const expected_delete_ctor_base&) = default;
|
||||
expected_delete_ctor_base& operator=(expected_delete_ctor_base&&) noexcept = default;
|
||||
};
|
||||
|
||||
template <typename T, typename E>
|
||||
requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>>
|
||||
struct expected_delete_ctor_base<T, E, false, false> {
|
||||
expected_delete_ctor_base() = default;
|
||||
expected_delete_ctor_base(const expected_delete_ctor_base&) = delete;
|
||||
expected_delete_ctor_base(expected_delete_ctor_base&&) noexcept = delete;
|
||||
expected_delete_ctor_base& operator=(const expected_delete_ctor_base&) = default;
|
||||
expected_delete_ctor_base& operator=(expected_delete_ctor_base&&) noexcept = default;
|
||||
};
|
||||
|
||||
/**
|
||||
* expected_delete_assign_base will conditionally delete copy and move assignment operators
|
||||
* depending on whether T is copy/move constructible + assignable
|
||||
* Additionally, this requires E to be copy/move constructible + assignable
|
||||
*/
|
||||
template <
|
||||
typename T, typename E,
|
||||
bool EnableCopy = std::conjunction_v<std::is_copy_constructible<T>, std::is_copy_assignable<T>>,
|
||||
bool EnableMove = std::conjunction_v<std::is_move_constructible<T>, std::is_move_assignable<T>>>
|
||||
requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>,
|
||||
std::is_copy_assignable<E>, std::is_move_assignable<E>>
|
||||
struct expected_delete_assign_base {
|
||||
expected_delete_assign_base() = default;
|
||||
expected_delete_assign_base(const expected_delete_assign_base&) = default;
|
||||
expected_delete_assign_base(expected_delete_assign_base&&) noexcept = default;
|
||||
expected_delete_assign_base& operator=(const expected_delete_assign_base&) = default;
|
||||
expected_delete_assign_base& operator=(expected_delete_assign_base&&) noexcept = default;
|
||||
};
|
||||
|
||||
template <typename T, typename E>
|
||||
requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>,
|
||||
std::is_copy_assignable<E>, std::is_move_assignable<E>>
|
||||
struct expected_delete_assign_base<T, E, true, false> {
|
||||
expected_delete_assign_base() = default;
|
||||
expected_delete_assign_base(const expected_delete_assign_base&) = default;
|
||||
expected_delete_assign_base(expected_delete_assign_base&&) noexcept = default;
|
||||
expected_delete_assign_base& operator=(const expected_delete_assign_base&) = default;
|
||||
expected_delete_assign_base& operator=(expected_delete_assign_base&&) noexcept = delete;
|
||||
};
|
||||
|
||||
template <typename T, typename E>
|
||||
requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>,
|
||||
std::is_copy_assignable<E>, std::is_move_assignable<E>>
|
||||
struct expected_delete_assign_base<T, E, false, true> {
|
||||
expected_delete_assign_base() = default;
|
||||
expected_delete_assign_base(const expected_delete_assign_base&) = default;
|
||||
expected_delete_assign_base(expected_delete_assign_base&&) noexcept = default;
|
||||
expected_delete_assign_base& operator=(const expected_delete_assign_base&) = delete;
|
||||
expected_delete_assign_base& operator=(expected_delete_assign_base&&) noexcept = default;
|
||||
};
|
||||
|
||||
template <typename T, typename E>
|
||||
requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>,
|
||||
std::is_copy_assignable<E>, std::is_move_assignable<E>>
|
||||
struct expected_delete_assign_base<T, E, false, false> {
|
||||
expected_delete_assign_base() = default;
|
||||
expected_delete_assign_base(const expected_delete_assign_base&) = default;
|
||||
expected_delete_assign_base(expected_delete_assign_base&&) noexcept = default;
|
||||
expected_delete_assign_base& operator=(const expected_delete_assign_base&) = delete;
|
||||
expected_delete_assign_base& operator=(expected_delete_assign_base&&) noexcept = delete;
|
||||
};
|
||||
|
||||
/**
|
||||
* This is needed to be able to construct the expected_default_ctor_base which follows,
|
||||
* while still conditionally deleting the default constructor.
|
||||
*/
|
||||
struct default_constructor_tag {
|
||||
constexpr explicit default_constructor_tag() = default;
|
||||
};
|
||||
|
||||
/**
|
||||
* expected_default_ctor_base will ensure that expected
|
||||
* has a deleted default constructor if T is not default constructible
|
||||
* This specialization is for when T is default constructible
|
||||
*/
|
||||
template <typename T, typename E, bool Enable = std::is_default_constructible_v<T>>
|
||||
struct expected_default_ctor_base {
|
||||
constexpr expected_default_ctor_base() noexcept = default;
|
||||
constexpr expected_default_ctor_base(expected_default_ctor_base const&) noexcept = default;
|
||||
constexpr expected_default_ctor_base(expected_default_ctor_base&&) noexcept = default;
|
||||
expected_default_ctor_base& operator=(expected_default_ctor_base const&) noexcept = default;
|
||||
expected_default_ctor_base& operator=(expected_default_ctor_base&&) noexcept = default;
|
||||
|
||||
constexpr explicit expected_default_ctor_base(default_constructor_tag) {}
|
||||
};
|
||||
|
||||
template <typename T, typename E>
|
||||
struct expected_default_ctor_base<T, E, false> {
|
||||
constexpr expected_default_ctor_base() noexcept = delete;
|
||||
constexpr expected_default_ctor_base(expected_default_ctor_base const&) noexcept = default;
|
||||
constexpr expected_default_ctor_base(expected_default_ctor_base&&) noexcept = default;
|
||||
expected_default_ctor_base& operator=(expected_default_ctor_base const&) noexcept = default;
|
||||
expected_default_ctor_base& operator=(expected_default_ctor_base&&) noexcept = default;
|
||||
|
||||
constexpr explicit expected_default_ctor_base(default_constructor_tag) {}
|
||||
};
|
||||
|
||||
template <typename T, typename E, typename U>
|
||||
using expected_enable_forward_value =
|
||||
std::enable_if_t<std::is_constructible_v<T, U&&> &&
|
||||
!std::is_same_v<std::remove_cvref_t<U>, std::in_place_t> &&
|
||||
!std::is_same_v<Expected<T, E>, std::remove_cvref_t<U>> &&
|
||||
!std::is_same_v<Unexpected<E>, std::remove_cvref_t<U>>>;
|
||||
|
||||
template <typename T, typename E, typename U, typename G, typename UR, typename GR>
|
||||
using expected_enable_from_other = std::enable_if_t<
|
||||
std::is_constructible_v<T, UR> && std::is_constructible_v<E, GR> &&
|
||||
!std::is_constructible_v<T, Expected<U, G>&> && !std::is_constructible_v<T, Expected<U, G>&&> &&
|
||||
!std::is_constructible_v<T, const Expected<U, G>&> &&
|
||||
!std::is_constructible_v<T, const Expected<U, G>&&> &&
|
||||
!std::is_convertible_v<Expected<U, G>&, T> && !std::is_convertible_v<Expected<U, G>&&, T> &&
|
||||
!std::is_convertible_v<const Expected<U, G>&, T> &&
|
||||
!std::is_convertible_v<const Expected<U, G>&&, T>>;
|
||||
|
||||
} // namespace detail
|
||||
|
||||
template <typename T, typename E>
|
||||
class Expected : private detail::expected_move_assign_base<T, E>,
|
||||
private detail::expected_delete_ctor_base<T, E>,
|
||||
private detail::expected_delete_assign_base<T, E>,
|
||||
private detail::expected_default_ctor_base<T, E> {
|
||||
public:
|
||||
using value_type = T;
|
||||
using error_type = E;
|
||||
using unexpected_type = Unexpected<E>;
|
||||
|
||||
constexpr Expected() = default;
|
||||
constexpr Expected(const Expected&) = default;
|
||||
constexpr Expected(Expected&&) = default;
|
||||
Expected& operator=(const Expected&) = default;
|
||||
Expected& operator=(Expected&&) = default;
|
||||
|
||||
template <typename... Args, std::enable_if_t<std::is_constructible_v<T, Args&&...>>* = nullptr>
|
||||
constexpr Expected(std::in_place_t, Args&&... args)
|
||||
: impl_base{std::in_place, std::forward<Args>(args)...},
|
||||
ctor_base{detail::default_constructor_tag{}} {}
|
||||
|
||||
template <typename U, typename... Args,
|
||||
std::enable_if_t<std::is_constructible_v<T, std::initializer_list<U>&, Args&&...>>* =
|
||||
nullptr>
|
||||
constexpr Expected(std::in_place_t, std::initializer_list<U> il, Args&&... args)
|
||||
: impl_base{std::in_place, il, std::forward<Args>(args)...},
|
||||
ctor_base{detail::default_constructor_tag{}} {}
|
||||
|
||||
template <typename G = E, std::enable_if_t<std::is_constructible_v<E, const G&>>* = nullptr,
|
||||
std::enable_if_t<!std::is_convertible_v<const G&, E>>* = nullptr>
|
||||
constexpr explicit Expected(const Unexpected<G>& e)
|
||||
: impl_base{unexpect_t{}, e.value()}, ctor_base{detail::default_constructor_tag{}} {}
|
||||
|
||||
template <typename G = E, std::enable_if_t<std::is_constructible_v<E, const G&>>* = nullptr,
|
||||
std::enable_if_t<std::is_convertible_v<const G&, E>>* = nullptr>
|
||||
constexpr Expected(Unexpected<G> const& e)
|
||||
: impl_base{unexpect_t{}, e.value()}, ctor_base{detail::default_constructor_tag{}} {}
|
||||
|
||||
template <typename G = E, std::enable_if_t<std::is_constructible_v<E, G&&>>* = nullptr,
|
||||
std::enable_if_t<!std::is_convertible_v<G&&, E>>* = nullptr>
|
||||
constexpr explicit Expected(Unexpected<G>&& e) noexcept(std::is_nothrow_constructible_v<E, G&&>)
|
||||
: impl_base{unexpect_t{}, std::move(e.value())}, ctor_base{
|
||||
detail::default_constructor_tag{}} {}
|
||||
|
||||
template <typename G = E, std::enable_if_t<std::is_constructible_v<E, G&&>>* = nullptr,
|
||||
std::enable_if_t<std::is_convertible_v<G&&, E>>* = nullptr>
|
||||
constexpr Expected(Unexpected<G>&& e) noexcept(std::is_nothrow_constructible_v<E, G&&>)
|
||||
: impl_base{unexpect_t{}, std::move(e.value())}, ctor_base{
|
||||
detail::default_constructor_tag{}} {}
|
||||
|
||||
template <typename... Args, std::enable_if_t<std::is_constructible_v<E, Args&&...>>* = nullptr>
|
||||
constexpr explicit Expected(unexpect_t, Args&&... args)
|
||||
: impl_base{unexpect_t{}, std::forward<Args>(args)...},
|
||||
ctor_base{detail::default_constructor_tag{}} {}
|
||||
|
||||
template <typename U, typename... Args,
|
||||
std::enable_if_t<std::is_constructible_v<E, std::initializer_list<U>&, Args&&...>>* =
|
||||
nullptr>
|
||||
constexpr explicit Expected(unexpect_t, std::initializer_list<U> il, Args&&... args)
|
||||
: impl_base{unexpect_t{}, il, std::forward<Args>(args)...},
|
||||
ctor_base{detail::default_constructor_tag{}} {}
|
||||
|
||||
template <typename U, typename G,
|
||||
std::enable_if_t<!(std::is_convertible_v<U const&, T> &&
|
||||
std::is_convertible_v<G const&, E>)>* = nullptr,
|
||||
detail::expected_enable_from_other<T, E, U, G, const U&, const G&>* = nullptr>
|
||||
constexpr explicit Expected(const Expected<U, G>& rhs)
|
||||
: ctor_base{detail::default_constructor_tag{}} {
|
||||
if (rhs.has_value()) {
|
||||
this->construct(*rhs);
|
||||
} else {
|
||||
this->construct_error(rhs.error());
|
||||
}
|
||||
}
|
||||
|
||||
template <typename U, typename G,
|
||||
std::enable_if_t<(std::is_convertible_v<U const&, T> &&
|
||||
std::is_convertible_v<G const&, E>)>* = nullptr,
|
||||
detail::expected_enable_from_other<T, E, U, G, const U&, const G&>* = nullptr>
|
||||
constexpr Expected(const Expected<U, G>& rhs) : ctor_base{detail::default_constructor_tag{}} {
|
||||
if (rhs.has_value()) {
|
||||
this->construct(*rhs);
|
||||
} else {
|
||||
this->construct_error(rhs.error());
|
||||
}
|
||||
}
|
||||
|
||||
template <typename U, typename G,
|
||||
std::enable_if_t<!(std::is_convertible_v<U&&, T> && std::is_convertible_v<G&&, E>)>* =
|
||||
nullptr,
|
||||
detail::expected_enable_from_other<T, E, U, G, U&&, G&&>* = nullptr>
|
||||
constexpr explicit Expected(Expected<U, G>&& rhs)
|
||||
: ctor_base{detail::default_constructor_tag{}} {
|
||||
if (rhs.has_value()) {
|
||||
this->construct(std::move(*rhs));
|
||||
} else {
|
||||
this->construct_error(std::move(rhs.error()));
|
||||
}
|
||||
}
|
||||
|
||||
template <typename U, typename G,
|
||||
std::enable_if_t<(std::is_convertible_v<U&&, T> && std::is_convertible_v<G&&, E>)>* =
|
||||
nullptr,
|
||||
detail::expected_enable_from_other<T, E, U, G, U&&, G&&>* = nullptr>
|
||||
constexpr Expected(Expected<U, G>&& rhs) : ctor_base{detail::default_constructor_tag{}} {
|
||||
if (rhs.has_value()) {
|
||||
this->construct(std::move(*rhs));
|
||||
} else {
|
||||
this->construct_error(std::move(rhs.error()));
|
||||
}
|
||||
}
|
||||
|
||||
template <typename U = T, std::enable_if_t<!std::is_convertible_v<U&&, T>>* = nullptr,
|
||||
detail::expected_enable_forward_value<T, E, U>* = nullptr>
|
||||
constexpr explicit Expected(U&& v) : Expected{std::in_place, std::forward<U>(v)} {}
|
||||
|
||||
template <typename U = T, std::enable_if_t<std::is_convertible_v<U&&, T>>* = nullptr,
|
||||
detail::expected_enable_forward_value<T, E, U>* = nullptr>
|
||||
constexpr Expected(U&& v) : Expected{std::in_place, std::forward<U>(v)} {}
|
||||
|
||||
template <typename U = T, typename G = T,
|
||||
std::enable_if_t<std::is_nothrow_constructible_v<T, U&&>>* = nullptr,
|
||||
std::enable_if_t<(
|
||||
!std::is_same_v<Expected<T, E>, std::remove_cvref_t<U>> &&
|
||||
!std::conjunction_v<std::is_scalar<T>, std::is_same<T, std::remove_cvref_t<U>>> &&
|
||||
std::is_constructible_v<T, U> && std::is_assignable_v<G&, U> &&
|
||||
std::is_nothrow_move_constructible_v<E>)>* = nullptr>
|
||||
Expected& operator=(U&& v) {
|
||||
if (has_value()) {
|
||||
val() = std::forward<U>(v);
|
||||
} else {
|
||||
err().~Unexpected<E>();
|
||||
new (valptr()) T{std::forward<U>(v)};
|
||||
this->m_has_val = true;
|
||||
}
|
||||
|
||||
return *this;
|
||||
}
|
||||
|
||||
template <typename U = T, typename G = T,
|
||||
std::enable_if_t<!std::is_nothrow_constructible_v<T, U&&>>* = nullptr,
|
||||
std::enable_if_t<(
|
||||
!std::is_same_v<Expected<T, E>, std::remove_cvref_t<U>> &&
|
||||
!std::conjunction_v<std::is_scalar<T>, std::is_same<T, std::remove_cvref_t<U>>> &&
|
||||
std::is_constructible_v<T, U> && std::is_assignable_v<G&, U> &&
|
||||
std::is_nothrow_move_constructible_v<E>)>* = nullptr>
|
||||
Expected& operator=(U&& v) {
|
||||
if (has_value()) {
|
||||
val() = std::forward<U>(v);
|
||||
} else {
|
||||
auto tmp = std::move(err());
|
||||
err().~Unexpected<E>();
|
||||
new (valptr()) T{std::forward<U>(v)};
|
||||
this->m_has_val = true;
|
||||
}
|
||||
|
||||
return *this;
|
||||
}
|
||||
|
||||
template <typename G = E, std::enable_if_t<std::is_nothrow_copy_constructible_v<G> &&
|
||||
std::is_assignable_v<G&, G>>* = nullptr>
|
||||
Expected& operator=(const Unexpected<G>& rhs) {
|
||||
if (!has_value()) {
|
||||
err() = rhs;
|
||||
} else {
|
||||
this->destroy_val();
|
||||
new (errptr()) Unexpected<E>{rhs};
|
||||
this->m_has_val = false;
|
||||
}
|
||||
|
||||
return *this;
|
||||
}
|
||||
|
||||
template <typename G = E, std::enable_if_t<std::is_nothrow_move_constructible_v<G> &&
|
||||
std::is_move_assignable_v<G>>* = nullptr>
|
||||
Expected& operator=(Unexpected<G>&& rhs) noexcept {
|
||||
if (!has_value()) {
|
||||
err() = std::move(rhs);
|
||||
} else {
|
||||
this->destroy_val();
|
||||
new (errptr()) Unexpected<E>{std::move(rhs)};
|
||||
this->m_has_val = false;
|
||||
}
|
||||
|
||||
return *this;
|
||||
}
|
||||
|
||||
template <typename... Args,
|
||||
std::enable_if_t<std::is_nothrow_constructible_v<T, Args&&...>>* = nullptr>
|
||||
void emplace(Args&&... args) {
|
||||
if (has_value()) {
|
||||
val() = T{std::forward<Args>(args)...};
|
||||
} else {
|
||||
err().~Unexpected<E>();
|
||||
new (valptr()) T{std::forward<Args>(args)...};
|
||||
this->m_has_val = true;
|
||||
}
|
||||
}
|
||||
|
||||
template <typename... Args,
|
||||
std::enable_if_t<!std::is_nothrow_constructible_v<T, Args&&...>>* = nullptr>
|
||||
void emplace(Args&&... args) {
|
||||
if (has_value()) {
|
||||
val() = T{std::forward<Args>(args)...};
|
||||
} else {
|
||||
auto tmp = std::move(err());
|
||||
err().~Unexpected<E>();
|
||||
new (valptr()) T{std::forward<Args>(args)...};
|
||||
this->m_has_val = true;
|
||||
}
|
||||
}
|
||||
|
||||
template <typename U, typename... Args,
|
||||
std::enable_if_t<std::is_nothrow_constructible_v<T, std::initializer_list<U>&,
|
||||
Args&&...>>* = nullptr>
|
||||
void emplace(std::initializer_list<U> il, Args&&... args) {
|
||||
if (has_value()) {
|
||||
T t{il, std::forward<Args>(args)...};
|
||||
val() = std::move(t);
|
||||
} else {
|
||||
err().~Unexpected<E>();
|
||||
new (valptr()) T{il, std::forward<Args>(args)...};
|
||||
this->m_has_val = true;
|
||||
}
|
||||
}
|
||||
|
||||
template <typename U, typename... Args,
|
||||
std::enable_if_t<!std::is_nothrow_constructible_v<T, std::initializer_list<U>&,
|
||||
Args&&...>>* = nullptr>
|
||||
void emplace(std::initializer_list<U> il, Args&&... args) {
|
||||
if (has_value()) {
|
||||
T t{il, std::forward<Args>(args)...};
|
||||
val() = std::move(t);
|
||||
} else {
|
||||
auto tmp = std::move(err());
|
||||
err().~Unexpected<E>();
|
||||
new (valptr()) T{il, std::forward<Args>(args)...};
|
||||
this->m_has_val = true;
|
||||
}
|
||||
}
|
||||
|
||||
constexpr T* operator->() {
|
||||
return valptr();
|
||||
}
|
||||
|
||||
constexpr const T* operator->() const {
|
||||
return valptr();
|
||||
}
|
||||
|
||||
template <typename U = T>
|
||||
constexpr U& operator*() & {
|
||||
return val();
|
||||
}
|
||||
|
||||
template <typename U = T>
|
||||
constexpr const U& operator*() const& {
|
||||
return val();
|
||||
}
|
||||
|
||||
template <typename U = T>
|
||||
constexpr U&& operator*() && {
|
||||
return std::move(val());
|
||||
}
|
||||
|
||||
template <typename U = T>
|
||||
constexpr const U&& operator*() const&& {
|
||||
return std::move(val());
|
||||
}
|
||||
|
||||
constexpr bool has_value() const noexcept {
|
||||
return this->m_has_val;
|
||||
}
|
||||
|
||||
constexpr explicit operator bool() const noexcept {
|
||||
return this->m_has_val;
|
||||
}
|
||||
|
||||
template <typename U = T>
|
||||
constexpr U& value() & {
|
||||
return val();
|
||||
}
|
||||
|
||||
template <typename U = T>
|
||||
constexpr const U& value() const& {
|
||||
return val();
|
||||
}
|
||||
|
||||
template <typename U = T>
|
||||
constexpr U&& value() && {
|
||||
return std::move(val());
|
||||
}
|
||||
|
||||
template <typename U = T>
|
||||
constexpr const U&& value() const&& {
|
||||
return std::move(val());
|
||||
}
|
||||
|
||||
constexpr E& error() & {
|
||||
return err().value();
|
||||
}
|
||||
|
||||
constexpr const E& error() const& {
|
||||
return err().value();
|
||||
}
|
||||
|
||||
constexpr E&& error() && {
|
||||
return std::move(err().value());
|
||||
}
|
||||
|
||||
constexpr const E&& error() const&& {
|
||||
return std::move(err().value());
|
||||
}
|
||||
|
||||
template <typename U>
|
||||
constexpr T value_or(U&& v) const& {
|
||||
static_assert(std::is_copy_constructible_v<T> && std::is_convertible_v<U&&, T>,
|
||||
"T must be copy-constructible and convertible from U&&");
|
||||
return bool(*this) ? **this : static_cast<T>(std::forward<U>(v));
|
||||
}
|
||||
|
||||
template <typename U>
|
||||
constexpr T value_or(U&& v) && {
|
||||
static_assert(std::is_move_constructible_v<T> && std::is_convertible_v<U&&, T>,
|
||||
"T must be move-constructible and convertible from U&&");
|
||||
return bool(*this) ? std::move(**this) : static_cast<T>(std::forward<U>(v));
|
||||
}
|
||||
|
||||
private:
|
||||
static_assert(!std::is_reference_v<T>, "T must not be a reference");
|
||||
static_assert(!std::is_same_v<T, std::remove_cv_t<std::in_place_t>>,
|
||||
"T must not be std::in_place_t");
|
||||
static_assert(!std::is_same_v<T, std::remove_cv_t<unexpect_t>>, "T must not be unexpect_t");
|
||||
static_assert(!std::is_same_v<T, std::remove_cv_t<Unexpected<E>>>,
|
||||
"T must not be Unexpected<E>");
|
||||
static_assert(!std::is_reference_v<E>, "E must not be a reference");
|
||||
|
||||
T* valptr() {
|
||||
return std::addressof(this->m_val);
|
||||
}
|
||||
|
||||
const T* valptr() const {
|
||||
return std::addressof(this->m_val);
|
||||
}
|
||||
|
||||
Unexpected<E>* errptr() {
|
||||
return std::addressof(this->m_unexpect);
|
||||
}
|
||||
|
||||
const Unexpected<E>* errptr() const {
|
||||
return std::addressof(this->m_unexpect);
|
||||
}
|
||||
|
||||
template <typename U = T>
|
||||
constexpr U& val() {
|
||||
return this->m_val;
|
||||
}
|
||||
|
||||
template <typename U = T>
|
||||
constexpr const U& val() const {
|
||||
return this->m_val;
|
||||
}
|
||||
|
||||
constexpr Unexpected<E>& err() {
|
||||
return this->m_unexpect;
|
||||
}
|
||||
|
||||
constexpr const Unexpected<E>& err() const {
|
||||
return this->m_unexpect;
|
||||
}
|
||||
|
||||
using impl_base = detail::expected_move_assign_base<T, E>;
|
||||
using ctor_base = detail::expected_default_ctor_base<T, E>;
|
||||
};
|
||||
|
||||
template <typename T, typename E, typename U, typename F>
|
||||
constexpr bool operator==(const Expected<T, E>& lhs, const Expected<U, F>& rhs) {
|
||||
return (lhs.has_value() != rhs.has_value())
|
||||
? false
|
||||
: (!lhs.has_value() ? lhs.error() == rhs.error() : *lhs == *rhs);
|
||||
}
|
||||
|
||||
template <typename T, typename E, typename U, typename F>
|
||||
constexpr bool operator!=(const Expected<T, E>& lhs, const Expected<U, F>& rhs) {
|
||||
return !operator==(lhs, rhs);
|
||||
}
|
||||
|
||||
template <typename T, typename E, typename U>
|
||||
constexpr bool operator==(const Expected<T, E>& x, const U& v) {
|
||||
return x.has_value() ? *x == v : false;
|
||||
}
|
||||
|
||||
template <typename T, typename E, typename U>
|
||||
constexpr bool operator==(const U& v, const Expected<T, E>& x) {
|
||||
return x.has_value() ? *x == v : false;
|
||||
}
|
||||
|
||||
template <typename T, typename E, typename U>
|
||||
constexpr bool operator!=(const Expected<T, E>& x, const U& v) {
|
||||
return !operator==(x, v);
|
||||
}
|
||||
|
||||
template <typename T, typename E, typename U>
|
||||
constexpr bool operator!=(const U& v, const Expected<T, E>& x) {
|
||||
return !operator==(v, x);
|
||||
}
|
||||
|
||||
template <typename T, typename E>
|
||||
constexpr bool operator==(const Expected<T, E>& x, const Unexpected<E>& e) {
|
||||
return x.has_value() ? false : x.error() == e.value();
|
||||
}
|
||||
|
||||
template <typename T, typename E>
|
||||
constexpr bool operator==(const Unexpected<E>& e, const Expected<T, E>& x) {
|
||||
return x.has_value() ? false : x.error() == e.value();
|
||||
}
|
||||
|
||||
template <typename T, typename E>
|
||||
constexpr bool operator!=(const Expected<T, E>& x, const Unexpected<E>& e) {
|
||||
return !operator==(x, e);
|
||||
}
|
||||
|
||||
template <typename T, typename E>
|
||||
constexpr bool operator!=(const Unexpected<E>& e, const Expected<T, E>& x) {
|
||||
return !operator==(e, x);
|
||||
}
|
||||
|
||||
} // namespace Common
|
||||
|
|
@ -39,13 +39,12 @@ void RomFSFactory::SetPackedUpdate(VirtualFile update_raw_file) {
|
|||
|
||||
ResultVal<VirtualFile> RomFSFactory::OpenCurrentProcess(u64 current_process_title_id) const {
|
||||
if (!updatable) {
|
||||
return MakeResult<VirtualFile>(file);
|
||||
return file;
|
||||
}
|
||||
|
||||
const PatchManager patch_manager{current_process_title_id, filesystem_controller,
|
||||
content_provider};
|
||||
return MakeResult<VirtualFile>(
|
||||
patch_manager.PatchRomFS(file, ivfc_offset, ContentRecordType::Program, update_raw));
|
||||
return patch_manager.PatchRomFS(file, ivfc_offset, ContentRecordType::Program, update_raw);
|
||||
}
|
||||
|
||||
ResultVal<VirtualFile> RomFSFactory::OpenPatchedRomFS(u64 title_id, ContentRecordType type) const {
|
||||
|
|
@ -58,8 +57,7 @@ ResultVal<VirtualFile> RomFSFactory::OpenPatchedRomFS(u64 title_id, ContentRecor
|
|||
|
||||
const PatchManager patch_manager{title_id, filesystem_controller, content_provider};
|
||||
|
||||
return MakeResult<VirtualFile>(
|
||||
patch_manager.PatchRomFS(nca->GetRomFS(), nca->GetBaseIVFCOffset(), type));
|
||||
return patch_manager.PatchRomFS(nca->GetRomFS(), nca->GetBaseIVFCOffset(), type);
|
||||
}
|
||||
|
||||
ResultVal<VirtualFile> RomFSFactory::OpenPatchedRomFSWithProgramIndex(
|
||||
|
|
@ -83,7 +81,7 @@ ResultVal<VirtualFile> RomFSFactory::Open(u64 title_id, StorageId storage,
|
|||
return ResultUnknown;
|
||||
}
|
||||
|
||||
return MakeResult<VirtualFile>(romfs);
|
||||
return romfs;
|
||||
}
|
||||
|
||||
std::shared_ptr<NCA> RomFSFactory::GetEntry(u64 title_id, StorageId storage,
|
||||
|
|
|
|||
|
|
@ -94,7 +94,7 @@ ResultVal<VirtualDir> SaveDataFactory::Create(SaveDataSpaceId space,
|
|||
return ResultUnknown;
|
||||
}
|
||||
|
||||
return MakeResult<VirtualDir>(std::move(out));
|
||||
return out;
|
||||
}
|
||||
|
||||
ResultVal<VirtualDir> SaveDataFactory::Open(SaveDataSpaceId space,
|
||||
|
|
@ -115,7 +115,7 @@ ResultVal<VirtualDir> SaveDataFactory::Open(SaveDataSpaceId space,
|
|||
return ResultUnknown;
|
||||
}
|
||||
|
||||
return MakeResult<VirtualDir>(std::move(out));
|
||||
return out;
|
||||
}
|
||||
|
||||
VirtualDir SaveDataFactory::GetSaveDataSpaceDirectory(SaveDataSpaceId space) const {
|
||||
|
|
|
|||
|
|
@ -25,7 +25,7 @@ SDMCFactory::SDMCFactory(VirtualDir sd_dir_, VirtualDir sd_mod_dir_)
|
|||
SDMCFactory::~SDMCFactory() = default;
|
||||
|
||||
ResultVal<VirtualDir> SDMCFactory::Open() const {
|
||||
return MakeResult<VirtualDir>(sd_dir);
|
||||
return sd_dir;
|
||||
}
|
||||
|
||||
VirtualDir SDMCFactory::GetSDMCModificationLoadRoot(u64 title_id) const {
|
||||
|
|
|
|||
|
|
@ -859,7 +859,7 @@ ResultVal<VAddr> KPageTable::SetHeapSize(std::size_t size) {
|
|||
current_heap_addr = heap_region_start + size;
|
||||
}
|
||||
|
||||
return MakeResult<VAddr>(heap_region_start);
|
||||
return heap_region_start;
|
||||
}
|
||||
|
||||
ResultVal<VAddr> KPageTable::AllocateAndMapMemory(std::size_t needed_num_pages, std::size_t align,
|
||||
|
|
@ -893,7 +893,7 @@ ResultVal<VAddr> KPageTable::AllocateAndMapMemory(std::size_t needed_num_pages,
|
|||
|
||||
block_manager->Update(addr, needed_num_pages, state, perm);
|
||||
|
||||
return MakeResult<VAddr>(addr);
|
||||
return addr;
|
||||
}
|
||||
|
||||
ResultCode KPageTable::LockForDeviceAddressSpace(VAddr addr, std::size_t size) {
|
||||
|
|
|
|||
|
|
@ -4,11 +4,10 @@
|
|||
|
||||
#pragma once
|
||||
|
||||
#include <new>
|
||||
#include <utility>
|
||||
#include "common/assert.h"
|
||||
#include "common/bit_field.h"
|
||||
#include "common/common_types.h"
|
||||
#include "common/expected.h"
|
||||
|
||||
// All the constants in this file come from http://switchbrew.org/index.php?title=Error_codes
|
||||
|
||||
|
|
@ -155,204 +154,131 @@ constexpr ResultCode ResultSuccess(0);
|
|||
constexpr ResultCode ResultUnknown(UINT32_MAX);
|
||||
|
||||
/**
|
||||
* This is an optional value type. It holds a `ResultCode` and, if that code is a success code,
|
||||
* also holds a result of type `T`. If the code is an error code then trying to access the inner
|
||||
* value fails, thus ensuring that the ResultCode of functions is always checked properly before
|
||||
* their return value is used. It is similar in concept to the `std::optional` type
|
||||
* (http://en.cppreference.com/w/cpp/experimental/optional) originally proposed for inclusion in
|
||||
* C++14, or the `Result` type in Rust (http://doc.rust-lang.org/std/result/index.html).
|
||||
* This is an optional value type. It holds a `ResultCode` and, if that code is ResultSuccess, it
|
||||
* also holds a result of type `T`. If the code is an error code (not ResultSuccess), then trying
|
||||
* to access the inner value with operator* is undefined behavior and will assert with Unwrap().
|
||||
* Users of this class must be cognizant to check the status of the ResultVal with operator bool(),
|
||||
* Code(), Succeeded() or Failed() prior to accessing the inner value.
|
||||
*
|
||||
* An example of how it could be used:
|
||||
* \code
|
||||
* ResultVal<int> Frobnicate(float strength) {
|
||||
* if (strength < 0.f || strength > 1.0f) {
|
||||
* // Can't frobnicate too weakly or too strongly
|
||||
* return ResultCode(ErrorDescription::OutOfRange, ErrorModule::Common,
|
||||
* ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
|
||||
* return ResultCode{ErrorModule::Common, 1};
|
||||
* } else {
|
||||
* // Frobnicated! Give caller a cookie
|
||||
* return MakeResult<int>(42);
|
||||
* return 42;
|
||||
* }
|
||||
* }
|
||||
* \endcode
|
||||
*
|
||||
* \code
|
||||
* ResultVal<int> frob_result = Frobnicate(0.75f);
|
||||
* auto frob_result = Frobnicate(0.75f);
|
||||
* if (frob_result) {
|
||||
* // Frobbed ok
|
||||
* printf("My cookie is %d\n", *frob_result);
|
||||
* } else {
|
||||
* printf("Guess I overdid it. :( Error code: %ux\n", frob_result.code().hex);
|
||||
* printf("Guess I overdid it. :( Error code: %ux\n", frob_result.Code().raw);
|
||||
* }
|
||||
* \endcode
|
||||
*/
|
||||
template <typename T>
|
||||
class ResultVal {
|
||||
public:
|
||||
/// Constructs an empty `ResultVal` with the given error code. The code must not be a success
|
||||
/// code.
|
||||
ResultVal(ResultCode error_code = ResultUnknown) : result_code(error_code) {
|
||||
ASSERT(error_code.IsError());
|
||||
}
|
||||
constexpr ResultVal() : expected{} {}
|
||||
|
||||
/**
|
||||
* Similar to the non-member function `MakeResult`, with the exception that you can manually
|
||||
* specify the success code. `success_code` must not be an error code.
|
||||
*/
|
||||
template <typename... Args>
|
||||
[[nodiscard]] static ResultVal WithCode(ResultCode success_code, Args&&... args) {
|
||||
ResultVal<T> result;
|
||||
result.emplace(success_code, std::forward<Args>(args)...);
|
||||
return result;
|
||||
}
|
||||
constexpr ResultVal(ResultCode code) : expected{Common::Unexpected(code)} {}
|
||||
|
||||
ResultVal(const ResultVal& o) noexcept : result_code(o.result_code) {
|
||||
if (!o.empty()) {
|
||||
new (&object) T(o.object);
|
||||
}
|
||||
}
|
||||
|
||||
ResultVal(ResultVal&& o) noexcept : result_code(o.result_code) {
|
||||
if (!o.empty()) {
|
||||
new (&object) T(std::move(o.object));
|
||||
}
|
||||
}
|
||||
|
||||
~ResultVal() {
|
||||
if (!empty()) {
|
||||
object.~T();
|
||||
}
|
||||
}
|
||||
|
||||
ResultVal& operator=(const ResultVal& o) noexcept {
|
||||
if (this == &o) {
|
||||
return *this;
|
||||
}
|
||||
if (!empty()) {
|
||||
if (!o.empty()) {
|
||||
object = o.object;
|
||||
} else {
|
||||
object.~T();
|
||||
}
|
||||
} else {
|
||||
if (!o.empty()) {
|
||||
new (&object) T(o.object);
|
||||
}
|
||||
}
|
||||
result_code = o.result_code;
|
||||
|
||||
return *this;
|
||||
}
|
||||
|
||||
ResultVal& operator=(ResultVal&& o) noexcept {
|
||||
if (this == &o) {
|
||||
return *this;
|
||||
}
|
||||
if (!empty()) {
|
||||
if (!o.empty()) {
|
||||
object = std::move(o.object);
|
||||
} else {
|
||||
object.~T();
|
||||
}
|
||||
} else {
|
||||
if (!o.empty()) {
|
||||
new (&object) T(std::move(o.object));
|
||||
}
|
||||
}
|
||||
result_code = o.result_code;
|
||||
|
||||
return *this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Replaces the current result with a new constructed result value in-place. The code must not
|
||||
* be an error code.
|
||||
*/
|
||||
template <typename... Args>
|
||||
void emplace(ResultCode success_code, Args&&... args) {
|
||||
ASSERT(success_code.IsSuccess());
|
||||
if (!empty()) {
|
||||
object.~T();
|
||||
}
|
||||
new (&object) T(std::forward<Args>(args)...);
|
||||
result_code = success_code;
|
||||
}
|
||||
|
||||
/// Returns true if the `ResultVal` contains an error code and no value.
|
||||
[[nodiscard]] bool empty() const {
|
||||
return result_code.IsError();
|
||||
}
|
||||
|
||||
/// Returns true if the `ResultVal` contains a return value.
|
||||
[[nodiscard]] bool Succeeded() const {
|
||||
return result_code.IsSuccess();
|
||||
}
|
||||
/// Returns true if the `ResultVal` contains an error code and no value.
|
||||
[[nodiscard]] bool Failed() const {
|
||||
return empty();
|
||||
}
|
||||
|
||||
[[nodiscard]] ResultCode Code() const {
|
||||
return result_code;
|
||||
}
|
||||
|
||||
[[nodiscard]] const T& operator*() const {
|
||||
return object;
|
||||
}
|
||||
[[nodiscard]] T& operator*() {
|
||||
return object;
|
||||
}
|
||||
[[nodiscard]] const T* operator->() const {
|
||||
return &object;
|
||||
}
|
||||
[[nodiscard]] T* operator->() {
|
||||
return &object;
|
||||
}
|
||||
|
||||
/// Returns the value contained in this `ResultVal`, or the supplied default if it is missing.
|
||||
template <typename U>
|
||||
[[nodiscard]] T ValueOr(U&& value) const {
|
||||
return !empty() ? object : std::move(value);
|
||||
constexpr ResultVal(U&& val) : expected{std::forward<U>(val)} {}
|
||||
|
||||
template <typename... Args>
|
||||
constexpr ResultVal(Args&&... args) : expected{std::in_place, std::forward<Args>(args)...} {}
|
||||
|
||||
~ResultVal() = default;
|
||||
|
||||
constexpr ResultVal(const ResultVal&) = default;
|
||||
constexpr ResultVal(ResultVal&&) = default;
|
||||
|
||||
ResultVal& operator=(const ResultVal&) = default;
|
||||
ResultVal& operator=(ResultVal&&) = default;
|
||||
|
||||
[[nodiscard]] constexpr explicit operator bool() const noexcept {
|
||||
return expected.has_value();
|
||||
}
|
||||
|
||||
/// Asserts that the result succeeded and returns a reference to it.
|
||||
[[nodiscard]] T& Unwrap() & {
|
||||
ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
|
||||
return **this;
|
||||
[[nodiscard]] constexpr ResultCode Code() const {
|
||||
return expected.has_value() ? ResultSuccess : expected.error();
|
||||
}
|
||||
|
||||
[[nodiscard]] T&& Unwrap() && {
|
||||
[[nodiscard]] constexpr bool Succeeded() const {
|
||||
return expected.has_value();
|
||||
}
|
||||
|
||||
[[nodiscard]] constexpr bool Failed() const {
|
||||
return !expected.has_value();
|
||||
}
|
||||
|
||||
[[nodiscard]] constexpr T* operator->() {
|
||||
return std::addressof(expected.value());
|
||||
}
|
||||
|
||||
[[nodiscard]] constexpr const T* operator->() const {
|
||||
return std::addressof(expected.value());
|
||||
}
|
||||
|
||||
[[nodiscard]] constexpr T& operator*() & {
|
||||
return *expected;
|
||||
}
|
||||
|
||||
[[nodiscard]] constexpr const T& operator*() const& {
|
||||
return *expected;
|
||||
}
|
||||
|
||||
[[nodiscard]] constexpr T&& operator*() && {
|
||||
return *expected;
|
||||
}
|
||||
|
||||
[[nodiscard]] constexpr const T&& operator*() const&& {
|
||||
return *expected;
|
||||
}
|
||||
|
||||
[[nodiscard]] constexpr T& Unwrap() & {
|
||||
ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
|
||||
return std::move(**this);
|
||||
return expected.value();
|
||||
}
|
||||
|
||||
[[nodiscard]] constexpr const T& Unwrap() const& {
|
||||
ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
|
||||
return expected.value();
|
||||
}
|
||||
|
||||
[[nodiscard]] constexpr T&& Unwrap() && {
|
||||
ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
|
||||
return std::move(expected.value());
|
||||
}
|
||||
|
||||
[[nodiscard]] constexpr const T&& Unwrap() const&& {
|
||||
ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
|
||||
return std::move(expected.value());
|
||||
}
|
||||
|
||||
template <typename U>
|
||||
[[nodiscard]] constexpr T ValueOr(U&& v) const& {
|
||||
return expected.value_or(v);
|
||||
}
|
||||
|
||||
template <typename U>
|
||||
[[nodiscard]] constexpr T ValueOr(U&& v) && {
|
||||
return expected.value_or(v);
|
||||
}
|
||||
|
||||
private:
|
||||
// A union is used to allocate the storage for the value, while allowing us to construct and
|
||||
// destruct it at will.
|
||||
union {
|
||||
T object;
|
||||
};
|
||||
ResultCode result_code;
|
||||
// TODO: Replace this with std::expected once it is standardized in the STL.
|
||||
Common::Expected<T, ResultCode> expected;
|
||||
};
|
||||
|
||||
/**
|
||||
* This function is a helper used to construct `ResultVal`s. It receives the arguments to construct
|
||||
* `T` with and creates a success `ResultVal` contained the constructed value.
|
||||
*/
|
||||
template <typename T, typename... Args>
|
||||
[[nodiscard]] ResultVal<T> MakeResult(Args&&... args) {
|
||||
return ResultVal<T>::WithCode(ResultSuccess, std::forward<Args>(args)...);
|
||||
}
|
||||
|
||||
/**
|
||||
* Deducible overload of MakeResult, allowing the template parameter to be ommited if you're just
|
||||
* copy or move constructing.
|
||||
*/
|
||||
template <typename Arg>
|
||||
[[nodiscard]] ResultVal<std::remove_cvref_t<Arg>> MakeResult(Arg&& arg) {
|
||||
return ResultVal<std::remove_cvref_t<Arg>>::WithCode(ResultSuccess, std::forward<Arg>(arg));
|
||||
}
|
||||
|
||||
/**
|
||||
* Check for the success of `source` (which must evaluate to a ResultVal). If it succeeds, unwraps
|
||||
* the contained value and assigns it to `target`, which can be either an l-value expression or a
|
||||
|
|
|
|||
|
|
@ -226,11 +226,10 @@ ResultVal<FileSys::VirtualFile> VfsDirectoryServiceWrapper::OpenFile(const std::
|
|||
}
|
||||
|
||||
if (mode == FileSys::Mode::Append) {
|
||||
return MakeResult<FileSys::VirtualFile>(
|
||||
std::make_shared<FileSys::OffsetVfsFile>(file, 0, file->GetSize()));
|
||||
return std::make_shared<FileSys::OffsetVfsFile>(file, 0, file->GetSize());
|
||||
}
|
||||
|
||||
return MakeResult<FileSys::VirtualFile>(file);
|
||||
return file;
|
||||
}
|
||||
|
||||
ResultVal<FileSys::VirtualDir> VfsDirectoryServiceWrapper::OpenDirectory(const std::string& path_) {
|
||||
|
|
@ -240,7 +239,7 @@ ResultVal<FileSys::VirtualDir> VfsDirectoryServiceWrapper::OpenDirectory(const s
|
|||
// TODO(DarkLordZach): Find a better error code for this
|
||||
return FileSys::ERROR_PATH_NOT_FOUND;
|
||||
}
|
||||
return MakeResult(dir);
|
||||
return dir;
|
||||
}
|
||||
|
||||
ResultVal<FileSys::EntryType> VfsDirectoryServiceWrapper::GetEntryType(
|
||||
|
|
@ -252,12 +251,12 @@ ResultVal<FileSys::EntryType> VfsDirectoryServiceWrapper::GetEntryType(
|
|||
auto filename = Common::FS::GetFilename(path);
|
||||
// TODO(Subv): Some games use the '/' path, find out what this means.
|
||||
if (filename.empty())
|
||||
return MakeResult(FileSys::EntryType::Directory);
|
||||
return FileSys::EntryType::Directory;
|
||||
|
||||
if (dir->GetFile(filename) != nullptr)
|
||||
return MakeResult(FileSys::EntryType::File);
|
||||
return FileSys::EntryType::File;
|
||||
if (dir->GetSubdirectory(filename) != nullptr)
|
||||
return MakeResult(FileSys::EntryType::Directory);
|
||||
return FileSys::EntryType::Directory;
|
||||
return FileSys::ERROR_PATH_NOT_FOUND;
|
||||
}
|
||||
|
||||
|
|
@ -270,7 +269,7 @@ ResultVal<FileSys::FileTimeStampRaw> VfsDirectoryServiceWrapper::GetFileTimeStam
|
|||
if (GetEntryType(path).Failed()) {
|
||||
return FileSys::ERROR_PATH_NOT_FOUND;
|
||||
}
|
||||
return MakeResult(dir->GetFileTimeStamp(Common::FS::GetFilename(path)));
|
||||
return dir->GetFileTimeStamp(Common::FS::GetFilename(path));
|
||||
}
|
||||
|
||||
FileSystemController::FileSystemController(Core::System& system_) : system{system_} {}
|
||||
|
|
@ -395,7 +394,7 @@ ResultVal<FileSys::VirtualDir> FileSystemController::OpenSaveDataSpace(
|
|||
return FileSys::ERROR_ENTITY_NOT_FOUND;
|
||||
}
|
||||
|
||||
return MakeResult(save_data_factory->GetSaveDataSpaceDirectory(space));
|
||||
return save_data_factory->GetSaveDataSpaceDirectory(space);
|
||||
}
|
||||
|
||||
ResultVal<FileSys::VirtualDir> FileSystemController::OpenSDMC() const {
|
||||
|
|
@ -421,7 +420,7 @@ ResultVal<FileSys::VirtualDir> FileSystemController::OpenBISPartition(
|
|||
return FileSys::ERROR_INVALID_ARGUMENT;
|
||||
}
|
||||
|
||||
return MakeResult<FileSys::VirtualDir>(std::move(part));
|
||||
return part;
|
||||
}
|
||||
|
||||
ResultVal<FileSys::VirtualFile> FileSystemController::OpenBISPartitionStorage(
|
||||
|
|
@ -437,7 +436,7 @@ ResultVal<FileSys::VirtualFile> FileSystemController::OpenBISPartitionStorage(
|
|||
return FileSys::ERROR_INVALID_ARGUMENT;
|
||||
}
|
||||
|
||||
return MakeResult<FileSys::VirtualFile>(std::move(part));
|
||||
return part;
|
||||
}
|
||||
|
||||
u64 FileSystemController::GetFreeSpaceSize(FileSys::StorageId id) const {
|
||||
|
|
|
|||
|
|
@ -26,7 +26,7 @@ ResultVal<ApplicationLaunchProperty> ARPManager::GetLaunchProperty(u64 title_id)
|
|||
return ERR_NOT_REGISTERED;
|
||||
}
|
||||
|
||||
return MakeResult<ApplicationLaunchProperty>(iter->second.launch);
|
||||
return iter->second.launch;
|
||||
}
|
||||
|
||||
ResultVal<std::vector<u8>> ARPManager::GetControlProperty(u64 title_id) const {
|
||||
|
|
@ -39,7 +39,7 @@ ResultVal<std::vector<u8>> ARPManager::GetControlProperty(u64 title_id) const {
|
|||
return ERR_NOT_REGISTERED;
|
||||
}
|
||||
|
||||
return MakeResult<std::vector<u8>>(iter->second.control);
|
||||
return iter->second.control;
|
||||
}
|
||||
|
||||
ResultCode ARPManager::Register(u64 title_id, ApplicationLaunchProperty launch,
|
||||
|
|
|
|||
|
|
@ -335,7 +335,7 @@ public:
|
|||
CASCADE_CODE(result);
|
||||
|
||||
if (ValidateRegionForMap(page_table, addr, size)) {
|
||||
return MakeResult<VAddr>(addr);
|
||||
return addr;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -371,7 +371,7 @@ public:
|
|||
}
|
||||
|
||||
if (ValidateRegionForMap(page_table, addr, size)) {
|
||||
return MakeResult<VAddr>(addr);
|
||||
return addr;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -443,14 +443,14 @@ ResultVal<std::vector<MiiInfoElement>> MiiManager::GetDefault(SourceFlag source_
|
|||
std::vector<MiiInfoElement> result;
|
||||
|
||||
if ((source_flag & SourceFlag::Default) == SourceFlag::None) {
|
||||
return MakeResult(std::move(result));
|
||||
return result;
|
||||
}
|
||||
|
||||
for (std::size_t index = BaseMiiCount; index < DefaultMiiCount; index++) {
|
||||
result.emplace_back(BuildDefault(index), Source::Default);
|
||||
}
|
||||
|
||||
return MakeResult(std::move(result));
|
||||
return result;
|
||||
}
|
||||
|
||||
ResultCode MiiManager::GetIndex([[maybe_unused]] const MiiInfo& info, u32& index) {
|
||||
|
|
|
|||
|
|
@ -414,7 +414,7 @@ ResultVal<u8> IApplicationManagerInterface::GetApplicationDesiredLanguage(
|
|||
for (const auto lang : *priority_list) {
|
||||
const auto supported_flag = GetSupportedLanguageFlag(lang);
|
||||
if (supported_languages == 0 || (supported_languages & supported_flag) == supported_flag) {
|
||||
return MakeResult(static_cast<u8>(lang));
|
||||
return static_cast<u8>(lang);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -448,7 +448,7 @@ ResultVal<u64> IApplicationManagerInterface::ConvertApplicationLanguageToLanguag
|
|||
return ERR_APPLICATION_LANGUAGE_NOT_FOUND;
|
||||
}
|
||||
|
||||
return MakeResult(static_cast<u64>(*language_code));
|
||||
return static_cast<u64>(*language_code);
|
||||
}
|
||||
|
||||
IApplicationVersionInterface::IApplicationVersionInterface(Core::System& system_)
|
||||
|
|
|
|||
|
|
@ -87,7 +87,7 @@ ResultVal<Kernel::KPort*> ServiceManager::GetServicePort(const std::string& name
|
|||
auto handler = it->second;
|
||||
port->GetServerPort().SetSessionHandler(std::move(handler));
|
||||
|
||||
return MakeResult(port);
|
||||
return port;
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -165,7 +165,7 @@ ResultVal<Kernel::KClientSession*> SM::GetServiceImpl(Kernel::HLERequestContext&
|
|||
|
||||
LOG_DEBUG(Service_SM, "called service={} -> session={}", name, session->GetId());
|
||||
|
||||
return MakeResult(session);
|
||||
return session;
|
||||
}
|
||||
|
||||
void SM::RegisterService(Kernel::HLERequestContext& ctx) {
|
||||
|
|
|
|||
|
|
@ -120,40 +120,40 @@ ResultVal<u64> Module::Interface::GetConfigImpl(ConfigItem config_item) const {
|
|||
return ResultSecureMonitorNotImplemented;
|
||||
case ConfigItem::ExosphereApiVersion:
|
||||
// Get information about the current exosphere version.
|
||||
return MakeResult((u64{HLE::ApiVersion::ATMOSPHERE_RELEASE_VERSION_MAJOR} << 56) |
|
||||
(u64{HLE::ApiVersion::ATMOSPHERE_RELEASE_VERSION_MINOR} << 48) |
|
||||
(u64{HLE::ApiVersion::ATMOSPHERE_RELEASE_VERSION_MICRO} << 40) |
|
||||
(static_cast<u64>(HLE::ApiVersion::GetTargetFirmware())));
|
||||
return (u64{HLE::ApiVersion::ATMOSPHERE_RELEASE_VERSION_MAJOR} << 56) |
|
||||
(u64{HLE::ApiVersion::ATMOSPHERE_RELEASE_VERSION_MINOR} << 48) |
|
||||
(u64{HLE::ApiVersion::ATMOSPHERE_RELEASE_VERSION_MICRO} << 40) |
|
||||
(static_cast<u64>(HLE::ApiVersion::GetTargetFirmware()));
|
||||
case ConfigItem::ExosphereNeedsReboot:
|
||||
// We are executing, so we aren't in the process of rebooting.
|
||||
return MakeResult(u64{0});
|
||||
return u64{0};
|
||||
case ConfigItem::ExosphereNeedsShutdown:
|
||||
// We are executing, so we aren't in the process of shutting down.
|
||||
return MakeResult(u64{0});
|
||||
return u64{0};
|
||||
case ConfigItem::ExosphereGitCommitHash:
|
||||
// Get information about the current exosphere git commit hash.
|
||||
return MakeResult(u64{0});
|
||||
return u64{0};
|
||||
case ConfigItem::ExosphereHasRcmBugPatch:
|
||||
// Get information about whether this unit has the RCM bug patched.
|
||||
return MakeResult(u64{0});
|
||||
return u64{0};
|
||||
case ConfigItem::ExosphereBlankProdInfo:
|
||||
// Get whether this unit should simulate a "blanked" PRODINFO.
|
||||
return MakeResult(u64{0});
|
||||
return u64{0};
|
||||
case ConfigItem::ExosphereAllowCalWrites:
|
||||
// Get whether this unit should allow writing to the calibration partition.
|
||||
return MakeResult(u64{0});
|
||||
return u64{0};
|
||||
case ConfigItem::ExosphereEmummcType:
|
||||
// Get what kind of emummc this unit has active.
|
||||
return MakeResult(u64{0});
|
||||
return u64{0};
|
||||
case ConfigItem::ExospherePayloadAddress:
|
||||
// Gets the physical address of the reboot payload buffer, if one exists.
|
||||
return ResultSecureMonitorNotInitialized;
|
||||
case ConfigItem::ExosphereLogConfiguration:
|
||||
// Get the log configuration.
|
||||
return MakeResult(u64{0});
|
||||
return u64{0};
|
||||
case ConfigItem::ExosphereForceEnableUsb30:
|
||||
// Get whether usb 3.0 should be force-enabled.
|
||||
return MakeResult(u64{0});
|
||||
return u64{0};
|
||||
default:
|
||||
return ResultSecureMonitorInvalidArgument;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1284,15 +1284,15 @@ private:
|
|||
static ResultVal<ConvertedScaleMode> ConvertScalingModeImpl(NintendoScaleMode mode) {
|
||||
switch (mode) {
|
||||
case NintendoScaleMode::None:
|
||||
return MakeResult(ConvertedScaleMode::None);
|
||||
return ConvertedScaleMode::None;
|
||||
case NintendoScaleMode::Freeze:
|
||||
return MakeResult(ConvertedScaleMode::Freeze);
|
||||
return ConvertedScaleMode::Freeze;
|
||||
case NintendoScaleMode::ScaleToWindow:
|
||||
return MakeResult(ConvertedScaleMode::ScaleToWindow);
|
||||
return ConvertedScaleMode::ScaleToWindow;
|
||||
case NintendoScaleMode::ScaleAndCrop:
|
||||
return MakeResult(ConvertedScaleMode::ScaleAndCrop);
|
||||
return ConvertedScaleMode::ScaleAndCrop;
|
||||
case NintendoScaleMode::PreserveAspectRatio:
|
||||
return MakeResult(ConvertedScaleMode::PreserveAspectRatio);
|
||||
return ConvertedScaleMode::PreserveAspectRatio;
|
||||
default:
|
||||
LOG_ERROR(Service_VI, "Invalid scaling mode specified, mode={}", mode);
|
||||
return ERR_OPERATION_FAILED;
|
||||
|
|
|
|||
Loading…
Reference in a new issue