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https://github.com/RGBCube/serenity
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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
56 lines
1.3 KiB
C++
56 lines
1.3 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Max Wipfli <mail@maxwipfli.ch>
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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 <LibJS/Heap/Handle.h>
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#include <LibWeb/DOM/Node.h>
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#include <LibWeb/Forward.h>
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namespace Web::DOM {
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class Position {
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public:
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Position() = default;
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Position(Node&, unsigned offset);
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bool is_valid() const { return m_node.ptr(); }
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Node* node() { return m_node.cell(); }
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Node const* node() const { return m_node.cell(); }
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unsigned offset() const { return m_offset; }
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bool offset_is_at_end_of_node() const;
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void set_offset(unsigned value) { m_offset = value; }
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bool increment_offset();
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bool decrement_offset();
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bool operator==(Position const& other) const
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{
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return m_node.ptr() == other.m_node.ptr() && m_offset == other.m_offset;
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}
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String to_string() const;
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private:
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JS::Handle<Node> m_node;
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unsigned m_offset { 0 };
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};
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}
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namespace AK {
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template<>
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struct Formatter<Web::DOM::Position> : Formatter<StringView> {
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ErrorOr<void> format(FormatBuilder& builder, Web::DOM::Position const& value)
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{
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return Formatter<StringView>::format(builder, value.to_string());
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}
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};
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}
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