216e21a1fa
This isn't a complete conversion to ErrorOr<void>, but a good chunk. The end goal here is to propagate buffer allocation failures to the caller, and allow the use of TRY() with formatting functions.
60 lines
1.3 KiB
C++
60 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 <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() { }
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Position(Node&, unsigned offset);
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bool is_valid() const { return m_node; }
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Node* node() { return m_node; }
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const Node* node() const { return m_node; }
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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==(const Position& other) const
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{
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return m_node == other.m_node && m_offset == other.m_offset;
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}
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bool operator!=(const Position& other) const
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{
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return !(*this == other);
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}
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String to_string() const;
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private:
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RefPtr<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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