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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.
78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@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 <LibGUI/TextPosition.h>
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namespace GUI {
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class TextRange {
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public:
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TextRange() { }
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TextRange(const TextPosition& start, const TextPosition& end)
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: m_start(start)
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, m_end(end)
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{
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}
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bool is_valid() const { return m_start.is_valid() && m_end.is_valid() && m_start != m_end; }
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void clear()
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{
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m_start = {};
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m_end = {};
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}
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TextPosition& start() { return m_start; }
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TextPosition& end() { return m_end; }
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const TextPosition& start() const { return m_start; }
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const TextPosition& end() const { return m_end; }
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TextRange normalized() const { return TextRange(normalized_start(), normalized_end()); }
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void set_start(const TextPosition& position) { m_start = position; }
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void set_end(const TextPosition& position) { m_end = position; }
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void set(const TextPosition& start, const TextPosition& end)
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{
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m_start = start;
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m_end = end;
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}
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bool operator==(const TextRange& other) const
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{
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return m_start == other.m_start && m_end == other.m_end;
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}
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bool contains(const TextPosition& position) const
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{
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if (!(position.line() > m_start.line() || (position.line() == m_start.line() && position.column() >= m_start.column())))
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return false;
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if (!(position.line() < m_end.line() || (position.line() == m_end.line() && position.column() <= m_end.column())))
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return false;
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return true;
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}
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private:
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TextPosition normalized_start() const { return m_start < m_end ? m_start : m_end; }
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TextPosition normalized_end() const { return m_start < m_end ? m_end : m_start; }
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TextPosition m_start;
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TextPosition m_end;
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};
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}
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template<>
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struct AK::Formatter<GUI::TextRange> : AK::Formatter<FormatString> {
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ErrorOr<void> format(FormatBuilder& builder, GUI::TextRange const& value)
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{
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if (value.is_valid())
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return Formatter<FormatString>::format(builder, "{}-{}", value.start(), value.end());
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return Formatter<FormatString>::format(builder, "GUI::TextRange(Invalid)");
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}
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};
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