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https://github.com/notepad-plus-plus/notepad-plus-plus.git
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96 lines
2.4 KiB
C++
96 lines
2.4 KiB
C++
// This file is part of Notepad++ project
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// Copyright (C) 2021 Notepad++ authors.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// at your option any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#ifndef UTF8DOCUMENTITERATOR_H_3452843291318441149
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#define UTF8DOCUMENTITERATOR_H_3452843291318441149
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#include <stdlib.h>
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#include <vector>
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#include <memory>
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#include "Position.h"
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namespace Scintilla::Internal {
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class Document;
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class UTF8DocumentIterator
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{
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public:
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using iterator_category = std::bidirectional_iterator_tag;
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using value_type = wchar_t;
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using difference_type = ptrdiff_t;
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using pointer = wchar_t*;
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using reference = wchar_t&;
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UTF8DocumentIterator() {};
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UTF8DocumentIterator(Document* doc, Sci::Position pos, Sci::Position end);
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UTF8DocumentIterator(const UTF8DocumentIterator& copy);
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bool operator == (const UTF8DocumentIterator& other) const
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{
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return (ended() == other.ended()) && (m_doc == other.m_doc) && (m_pos == other.m_pos);
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}
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bool operator != (const UTF8DocumentIterator& other) const
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{
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return !(*this == other);
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}
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wchar_t operator * () const
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{
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return m_character[m_characterIndex];
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}
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UTF8DocumentIterator& operator = (Sci::Position other)
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{
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m_pos = other;
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return *this;
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}
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UTF8DocumentIterator& operator = (const UTF8DocumentIterator& other) = default;
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UTF8DocumentIterator& operator ++ ();
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UTF8DocumentIterator& operator -- ();
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Sci::Position pos() const
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{
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return m_pos;
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}
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private:
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void readCharacter();
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bool ended() const
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{
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return m_pos >= m_end;
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}
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Sci::Position m_pos = 0;
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wchar_t m_character[2]{};
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Sci::Position m_end = 0;
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int m_characterIndex = 0;
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int m_utf8Length = 0;
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int m_utf16Length = 0;
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Document* m_doc = nullptr;
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static const unsigned char m_firstByteMask[];
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};
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}
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#endif // UTF8DOCUMENTITERATOR_H_3452843291318441149
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