mirror of
https://github.com/Chatterino/chatterino2.git
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chore: make FlagsEnum constexpr (#5510)
This commit is contained in:
nerix
GitHub
parent
6b73bb53ec
commit
deb4401036
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@ -52,6 +52,7 @@
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- Dev: Cleanup `BrowserExtension`. (#5465)
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- Dev: Deprecate Qt 5.12. (#5396)
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- Dev: The running Qt version is now shown in the about page if it differs from the compiled version. (#5501)
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- Dev: `FlagsEnum` is now `constexpr`. (#5510)
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## 2.5.1
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@ -108,6 +108,7 @@
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# include <cinttypes>
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# include <climits>
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# include <cmath>
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# include <concepts>
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# include <cstdint>
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# include <ctime>
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# include <functional>
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@ -1,59 +1,74 @@
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#pragma once
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#include <initializer_list>
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#include <concepts>
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#include <type_traits>
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namespace chatterino {
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template <typename T, typename Q = typename std::underlying_type<T>::type>
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template <typename T>
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requires std::is_enum_v<T>
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class FlagsEnum
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{
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public:
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FlagsEnum()
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: value_(static_cast<T>(0))
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using Int = std::underlying_type_t<T>;
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constexpr FlagsEnum() noexcept = default;
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constexpr FlagsEnum(std::convertible_to<T> auto... flags) noexcept
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: value_(
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static_cast<T>((static_cast<Int>(static_cast<T>(flags)) | ...)))
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{
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}
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FlagsEnum(T value)
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: value_(value)
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friend constexpr bool operator==(FlagsEnum lhs, FlagsEnum rhs) noexcept
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{
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return lhs.value_ == rhs.value_;
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}
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friend constexpr bool operator!=(FlagsEnum lhs, FlagsEnum rhs) noexcept
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{
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return lhs.value_ != rhs.value_;
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}
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FlagsEnum(std::initializer_list<T> flags)
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friend constexpr bool operator==(FlagsEnum lhs, T rhs) noexcept
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{
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for (auto flag : flags)
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{
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this->set(flag);
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return lhs.value_ == rhs;
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}
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friend constexpr bool operator!=(FlagsEnum lhs, T rhs) noexcept
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{
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return lhs.value_ != rhs;
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}
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bool operator==(const FlagsEnum<T> &other) const
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friend constexpr bool operator==(T lhs, FlagsEnum rhs) noexcept
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{
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return this->value_ == other.value_;
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return lhs == rhs.value_;
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}
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friend constexpr bool operator!=(T lhs, FlagsEnum rhs) noexcept
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{
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return lhs != rhs.value_;
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}
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bool operator!=(const FlagsEnum<T> &other) const
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constexpr void set(std::convertible_to<T> auto... flags) noexcept
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{
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return this->value_ != other.value_;
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}
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void set(T flag)
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{
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reinterpret_cast<Q &>(this->value_) |= static_cast<Q>(flag);
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this->value_ =
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static_cast<T>(static_cast<Int>(this->value_) |
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(static_cast<Int>(static_cast<T>(flags)) | ...));
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}
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/** Adds the flags from `flags` in this enum. */
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void set(FlagsEnum flags)
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constexpr void set(FlagsEnum flags) noexcept
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{
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reinterpret_cast<Q &>(this->value_) |= static_cast<Q>(flags.value_);
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this->value_ = static_cast<T>(static_cast<Int>(this->value_) |
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static_cast<Int>(flags.value_));
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}
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void unset(T flag)
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constexpr void unset(std::convertible_to<T> auto... flags) noexcept
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{
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reinterpret_cast<Q &>(this->value_) &= ~static_cast<Q>(flag);
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this->value_ =
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static_cast<T>(static_cast<Int>(this->value_) &
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~(static_cast<Int>(static_cast<T>(flags)) | ...));
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}
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void set(T flag, bool value)
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constexpr void set(T flag, bool value) noexcept
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{
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if (value)
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{
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@ -65,43 +80,59 @@ public:
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}
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}
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bool has(T flag) const
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constexpr FlagsEnum operator|(T flag) const noexcept
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{
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return static_cast<Q>(this->value_) & static_cast<Q>(flag);
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return static_cast<T>(static_cast<Int>(this->value_) |
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static_cast<Int>(flag));
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}
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FlagsEnum operator|(T flag)
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constexpr FlagsEnum operator|(FlagsEnum rhs) const noexcept
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{
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FlagsEnum xd;
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xd.value_ = this->value_;
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xd.set(flag, true);
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return xd;
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return static_cast<T>(static_cast<Int>(this->value_) |
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static_cast<Int>(rhs.value_));
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}
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FlagsEnum operator|(FlagsEnum rhs)
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constexpr bool has(T flag) const noexcept
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{
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return static_cast<T>(static_cast<Q>(this->value_) |
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static_cast<Q>(rhs.value_));
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return static_cast<Int>(this->value_) & static_cast<Int>(flag);
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}
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bool hasAny(FlagsEnum flags) const
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constexpr bool hasAny(FlagsEnum flags) const noexcept
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{
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return static_cast<Q>(this->value_) & static_cast<Q>(flags.value_);
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return (static_cast<Int>(this->value_) &
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static_cast<Int>(flags.value_)) != 0;
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}
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bool hasAll(FlagsEnum<T> flags) const
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constexpr bool hasAny(std::convertible_to<T> auto... flags) const noexcept
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{
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return (static_cast<Q>(this->value_) & static_cast<Q>(flags.value_)) &&
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static_cast<Q>(flags->value);
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return this->hasAny(FlagsEnum{flags...});
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}
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bool hasNone(std::initializer_list<T> flags) const
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constexpr bool hasAll(FlagsEnum flags) const noexcept
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{
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return !this->hasAny(flags);
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return (static_cast<Int>(this->value_) &
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static_cast<Int>(flags.value_)) ==
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static_cast<Int>(flags.value_);
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}
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T value() const
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constexpr bool hasAll(std::convertible_to<T> auto... flags) const noexcept
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{
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return this->hasAll(FlagsEnum{flags...});
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}
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constexpr bool hasNone(FlagsEnum flags) const noexcept
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{
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return (static_cast<Int>(this->value_) &
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static_cast<Int>(flags.value_)) == 0;
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}
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constexpr bool hasNone() const noexcept = delete;
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constexpr bool hasNone(std::convertible_to<T> auto... flags) const noexcept
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{
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return this->hasNone(FlagsEnum{flags...});
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}
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constexpr T value() const noexcept
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{
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return this->value_;
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}
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@ -45,6 +45,7 @@ set(test_SOURCES
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${CMAKE_CURRENT_LIST_DIR}/src/ModerationAction.cpp
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${CMAKE_CURRENT_LIST_DIR}/src/Scrollbar.cpp
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${CMAKE_CURRENT_LIST_DIR}/src/Commands.cpp
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${CMAKE_CURRENT_LIST_DIR}/src/FlagsEnum.cpp
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# Add your new file above this line!
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)
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345
tests/src/FlagsEnum.cpp
Normal file
345
tests/src/FlagsEnum.cpp
Normal file
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@ -0,0 +1,345 @@
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#include "common/FlagsEnum.hpp"
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#include "Test.hpp"
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using namespace chatterino;
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namespace {
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enum class BasicScoped : std::uint16_t {
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None = 0,
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Foo = 1 << 0,
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Bar = 1 << 1,
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Baz = 1 << 2,
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Qox = 1 << 3,
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Quux = 1 << 4,
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Corge = 1 << 5,
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Grault = 1 << 6,
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Garply = 1 << 7,
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Waldo = 1 << 8,
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Fred = 1 << 9,
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};
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using BasicInt = std::underlying_type_t<BasicScoped>;
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enum BasicUnscoped : BasicInt {
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None = 0,
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Foo = 1 << 0,
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Bar = 1 << 1,
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Baz = 1 << 2,
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Qox = 1 << 3,
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Quux = 1 << 4,
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Corge = 1 << 5,
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Grault = 1 << 6,
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Garply = 1 << 7,
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Waldo = 1 << 8,
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Fred = 1 << 9,
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};
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using Scoped = FlagsEnum<BasicScoped>;
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using Unscoped = FlagsEnum<BasicUnscoped>;
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} // namespace
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TEST(FlagsEnum, sizeAndAlign)
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{
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enum class U8 : std::uint8_t {};
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enum class I8 : std::int8_t {};
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enum class U16 : std::uint16_t {};
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enum class I16 : std::int16_t {};
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enum class U32 : std::uint32_t {};
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enum class I32 : std::int32_t {};
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enum class U64 : std::uint64_t {};
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enum class I64 : std::int64_t {};
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auto check = []<typename... T>() {
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return (((sizeof(T) == sizeof(FlagsEnum<T>)) && ...) &&
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((alignof(T) == alignof(FlagsEnum<T>)) && ...));
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};
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static_assert(
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check.template operator()<U8, I8, U16, I16, U32, I32, U64, I64>());
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}
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template <typename E>
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consteval void testCtor()
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{
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using FE = FlagsEnum<E>;
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using U = std::underlying_type_t<E>;
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static_assert(FE{}.value() == E::None);
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static_assert(FE{E::Bar}.value() == E::Bar);
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static_assert(
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FE{E::Bar, E::Qox}.value() ==
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static_cast<E>(static_cast<U>(E::Bar) | static_cast<U>(E::Qox)));
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static_assert(
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FE{E::Bar, E::Bar, E::Qox}.value() ==
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static_cast<E>(static_cast<U>(E::Bar) | static_cast<U>(E::Qox)));
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}
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TEST(FlagsEnum, ctor)
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{
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testCtor<BasicScoped>();
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testCtor<BasicUnscoped>();
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}
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template <typename E>
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consteval void testOperatorEq()
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{
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using FE = FlagsEnum<E>;
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static_assert(FE{} == FE{});
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static_assert(FE{E::Corge} == FE{E::Corge});
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static_assert(FE{E::Corge, E::Garply} == FE{E::Garply, E::Corge});
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static_assert(FE{} == E::None);
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static_assert(E::None == FE{});
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static_assert(FE{E::Foo} == E::Foo);
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static_assert(E::Foo == FE{E::Foo});
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}
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TEST(FlagsEnum, operatorEq)
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{
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testOperatorEq<BasicScoped>();
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testOperatorEq<BasicUnscoped>();
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}
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template <typename E>
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consteval void testOperatorNeq()
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{
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using FE = FlagsEnum<E>;
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static_assert(FE{} != FE{E::Quux});
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static_assert(FE{E::Corge} != FE{E::Grault});
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static_assert(FE{E::Corge, E::Garply} != FE{E::Garply, E::Waldo});
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static_assert(FE{} != E::Foo);
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static_assert(E::Foo != FE{});
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static_assert(FE{E::Foo} != E::None);
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static_assert(E::None != FE{E::Foo});
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}
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TEST(FlagsEnum, operatorNeq)
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{
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testOperatorNeq<BasicScoped>();
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testOperatorNeq<BasicUnscoped>();
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}
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template <typename E>
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inline void testSetUnset()
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{
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using FE = FlagsEnum<E>;
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FE s;
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ASSERT_EQ(s, FE{});
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s.set(E::Foo);
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ASSERT_EQ(s, E::Foo);
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s.set(E::Fred, E::Qox);
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ASSERT_EQ(s, (FE{E::Foo, E::Fred, E::Qox}));
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s.set(E::Foo);
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ASSERT_EQ(s, (FE{E::Foo, E::Fred, E::Qox}));
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s.set(FE{E::Bar, E::Baz, E::Qox});
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ASSERT_EQ(s, (FE{E::Foo, E::Fred, E::Qox, E::Bar, E::Baz}));
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s.set(E::Foo, false);
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ASSERT_EQ(s, (FE{E::Fred, E::Qox, E::Bar, E::Baz}));
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s.unset(E::Foo, E::Qox, E::Bar);
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ASSERT_EQ(s, (FE{E::Fred, E::Baz}));
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s.unset(E::Fred, E::Baz, E ::Bar);
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ASSERT_EQ(s, FE{});
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s.unset(E::Baz);
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ASSERT_EQ(s, FE{});
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static_assert([] {
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FE s;
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bool result = s == FE{};
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s.set(E::Foo);
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result = result && s == E::Foo;
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s.set(E::Fred, E::Qox);
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result = result && s == FE{E::Foo, E::Fred, E::Qox};
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s.set(E::Foo);
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result = result && s == FE{E::Foo, E::Fred, E::Qox};
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s.set(FE{E::Bar, E::Baz, E::Qox});
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result = result && s == FE{E::Foo, E::Fred, E::Qox, E::Bar, E::Baz};
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s.set(E::Foo, false);
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result = result && s == (FE{E::Fred, E::Qox, E::Bar, E::Baz});
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s.unset(E::Foo, E::Qox, E::Bar);
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result = result && s == (FE{E::Fred, E::Baz});
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s.unset(E::Fred, E::Baz, E ::Bar);
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result = result && s == (FE{});
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s.unset(E::Baz);
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result = result && s == (FE{});
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return result;
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}());
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}
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TEST(FlagsEnum, setUnset)
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{
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testSetUnset<BasicScoped>();
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testSetUnset<BasicUnscoped>();
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}
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template <typename E>
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consteval void testOperatorBitOr()
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{
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using FE = FlagsEnum<E>;
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static_assert((FE{E::Foo} | E::Bar) == FE{E::Foo, E::Bar});
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static_assert((FE{E::Foo} | E::Foo) == FE{E::Foo});
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static_assert((FE{E::Foo} | E::None) == FE{E::Foo});
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static_assert((FE{} | E::Foo) == FE{E::Foo});
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static_assert((FE{} | E::None) == FE{});
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static_assert((FE{E::Foo} | FE{E::Bar}) == FE{E::Foo, E::Bar});
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static_assert((FE{E::Foo} | FE{E::Foo, E::Bar, E::Baz}) ==
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FE{E::Foo, E::Bar, E::Baz});
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static_assert((FE{E::Foo} | FE{}) == FE{E::Foo});
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static_assert((FE{} | FE{}) == FE{});
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}
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TEST(FlagsEnum, operatorBitOr)
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{
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testOperatorBitOr<BasicScoped>();
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testOperatorBitOr<BasicUnscoped>();
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}
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template <typename E>
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consteval void testHas()
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{
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using FE = FlagsEnum<E>;
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static_assert(FE{E::Foo}.has(E::Foo));
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static_assert(!FE{E::Foo}.has(E::Bar));
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static_assert(!FE{E::Foo}.has(E::None));
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static_assert(!FE{}.has(E::Foo));
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static_assert(!FE{}.has(E::None));
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static_assert(FE{E::Qox, E::Waldo, E::Garply}.has(E::Qox));
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static_assert(FE{E::Qox, E::Waldo, E::Garply}.has(E::Waldo));
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static_assert(FE{E::Qox, E::Waldo, E::Garply}.has(E::Garply));
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static_assert(!FE{E::Qox, E::Waldo, E::Garply}.has(E::Grault));
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}
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TEST(FlagsEnum, has)
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{
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testHas<BasicScoped>();
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testHas<BasicUnscoped>();
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}
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template <typename E>
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consteval void testHasAny()
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{
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using FE = FlagsEnum<E>;
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static_assert(FE{E::Foo}.hasAny(E::Foo));
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static_assert(!FE{E::Foo}.hasAny(E::Bar));
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static_assert(!FE{E::Foo}.hasAny(E::None));
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static_assert(!FE{}.hasAny(E::Foo));
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static_assert(!FE{}.hasAny(E::None));
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static_assert(FE{E::Qox, E::Waldo, E::Garply}.hasAny(E::Qox, E::Foo));
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static_assert(FE{E::Qox, E::Waldo, E::Garply}.hasAny({E::Qox, E::Foo}));
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static_assert(FE{E::Qox, E::Waldo, E::Garply}.hasAny(E::Waldo, E::None));
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static_assert(FE{E::Qox, E::Waldo, E::Garply}.hasAny(E::Garply, E::Grault));
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static_assert(!FE{E::Qox, E::Waldo, E::Garply}.hasAny(E::Grault));
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static_assert(!FE{E::Qox, E::Waldo, E::Garply}.hasAny());
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}
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TEST(FlagsEnum, hasAny)
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{
|
||||
testHasAny<BasicScoped>();
|
||||
testHasAny<BasicUnscoped>();
|
||||
}
|
||||
|
||||
template <typename E>
|
||||
consteval void testHasAll()
|
||||
{
|
||||
using FE = FlagsEnum<E>;
|
||||
|
||||
static_assert(FE{E::Foo}.hasAll(E::Foo));
|
||||
static_assert(FE{E::Foo}.hasAll(E::None));
|
||||
static_assert(!FE{E::Foo}.hasAll(E::Bar));
|
||||
|
||||
static_assert(FE{}.hasAll(E::None));
|
||||
static_assert(!FE{}.hasAll(E::Foo));
|
||||
|
||||
static_assert(FE{E::Qox, E::Waldo, E::Garply}.hasAll(E::Waldo, E::None));
|
||||
static_assert(FE{E::Qox, E::Waldo, E::Garply}.hasAll({E::Waldo, E::None}));
|
||||
static_assert(FE{E::Qox, E::Waldo, E::Garply}.hasAll());
|
||||
static_assert(
|
||||
FE{E::Qox, E::Waldo, E::Garply}.hasAll(E::Qox, E::Waldo, E::Garply));
|
||||
static_assert(FE{E::Qox, E::Waldo, E::Garply}.hasAll(E::Qox, E::Waldo,
|
||||
E::Garply, E::None));
|
||||
|
||||
static_assert(!FE{E::Qox, E::Waldo, E::Garply}.hasAll(E::Qox, E::Foo));
|
||||
static_assert(
|
||||
!FE{E::Qox, E::Waldo, E::Garply}.hasAll(E::Garply, E::Grault));
|
||||
static_assert(!FE{E::Qox, E::Waldo, E::Garply}.hasAll(E::Grault));
|
||||
static_assert(!FE{E::Qox, E::Waldo, E::Garply}.hasAll(E::Qox, E::Waldo,
|
||||
E::Garply, E::Foo));
|
||||
}
|
||||
|
||||
TEST(FlagsEnum, hasAll)
|
||||
{
|
||||
testHasAll<BasicScoped>();
|
||||
testHasAll<BasicUnscoped>();
|
||||
}
|
||||
|
||||
template <typename E>
|
||||
consteval void testHasNone()
|
||||
{
|
||||
using FE = FlagsEnum<E>;
|
||||
|
||||
static_assert(FE{E::Foo}.hasNone(E::Bar));
|
||||
static_assert(FE{E::Foo}.hasNone(E::None));
|
||||
|
||||
static_assert(FE{}.hasNone(E::Foo));
|
||||
static_assert(FE{}.hasNone(E::None));
|
||||
|
||||
static_assert(FE{E::Qox, E::Waldo, E::Garply}.hasNone(E::Foo, E::Foo));
|
||||
static_assert(FE{E::Qox, E::Waldo, E::Garply}.hasNone({E::Bar, E::Foo}));
|
||||
static_assert(!FE{E::Qox, E::Waldo, E::Garply}.hasNone(E::Waldo, E::Foo));
|
||||
static_assert(!FE{E::Qox, E::Waldo, E::Garply}.hasNone(E::Garply));
|
||||
}
|
||||
|
||||
TEST(FlagsEnum, hasNone)
|
||||
{
|
||||
testHasNone<BasicScoped>();
|
||||
testHasNone<BasicUnscoped>();
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
constexpr inline auto CONSTRUCTION_VALID = requires() { FlagsEnum<T>{}; };
|
||||
|
||||
TEST(FlagsEnum, templateParam)
|
||||
{
|
||||
struct S {
|
||||
};
|
||||
|
||||
static_assert(!CONSTRUCTION_VALID<S>);
|
||||
static_assert(!CONSTRUCTION_VALID<int>);
|
||||
static_assert(!CONSTRUCTION_VALID<bool>);
|
||||
static_assert(!CONSTRUCTION_VALID<BasicScoped &>);
|
||||
static_assert(!CONSTRUCTION_VALID<BasicUnscoped &>);
|
||||
|
||||
static_assert(CONSTRUCTION_VALID<BasicScoped>);
|
||||
static_assert(CONSTRUCTION_VALID<BasicUnscoped>);
|
||||
}
|
||||
|
|
@ -1,7 +1,7 @@
|
|||
#pragma once
|
||||
|
||||
#include <gmock/gmock.h>
|
||||
#include <gtest/gtest.h>
|
||||
#include <gmock/gmock.h> // IWYU pragma: export
|
||||
#include <gtest/gtest.h> // IWYU pragma: export
|
||||
|
||||
#include <ostream>
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue