4296425bd8
C++20 can automatically synthesize `operator!=` from `operator==`, so there is no point in writing such functions by hand if all they do is call through to `operator==`. This fixes a compile error with compilers that implement P2468 (Clang 16 currently). This paper restores the C++17 behavior that if both `T::operator==(U)` and `T::operator!=(U)` exist, `U == T` won't be rewritten in reverse to call `T::operator==(U)`. Removing `!=` operators makes the rewriting possible again. See https://reviews.llvm.org/D134529#3853062
62 lines
1.4 KiB
C++
62 lines
1.4 KiB
C++
/*
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* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/RefPtr.h>
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#include <AK/String.h>
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#include <LibWeb/Forward.h>
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namespace Web::CSS {
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class Angle {
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public:
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enum class Type {
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Calculated,
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Deg,
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Grad,
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Rad,
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Turn,
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};
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static Optional<Type> unit_from_name(StringView);
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Angle(int value, Type type);
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Angle(float value, Type type);
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static Angle make_calculated(NonnullRefPtr<CalculatedStyleValue>);
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static Angle make_degrees(float);
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Angle percentage_of(Percentage const&) const;
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bool is_calculated() const { return m_type == Type::Calculated; }
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NonnullRefPtr<CalculatedStyleValue> calculated_style_value() const;
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String to_string() const;
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float to_degrees() const;
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bool operator==(Angle const& other) const
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{
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if (is_calculated())
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return m_calculated_style == other.m_calculated_style;
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return m_type == other.m_type && m_value == other.m_value;
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}
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private:
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StringView unit_name() const;
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Type m_type;
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float m_value { 0 };
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RefPtr<CalculatedStyleValue> m_calculated_style;
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};
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}
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template<>
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struct AK::Formatter<Web::CSS::Angle> : Formatter<StringView> {
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ErrorOr<void> format(FormatBuilder& builder, Web::CSS::Angle const& angle)
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{
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return Formatter<StringView>::format(builder, angle.to_string());
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}
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};
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