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https://github.com/notepad-plus-plus/notepad-plus-plus.git
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119 lines
2.6 KiB
C++
119 lines
2.6 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 ANSIDOCUMENTITERATOR_H_12481491281240
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#define ANSIDOCUMENTITERATOR_H_12481491281240
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#include "Position.h"
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namespace Scintilla::Internal {
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class AnsiDocumentIterator
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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 = char;
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using difference_type = ptrdiff_t;
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using pointer = char*;
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using reference = char&;
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AnsiDocumentIterator() {};
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AnsiDocumentIterator(Document* doc, Sci::Position pos, Sci::Position end) :
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m_pos(pos),
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m_end(end),
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m_doc(doc)
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{
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// Check for debug builds
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PLATFORM_ASSERT(m_pos <= m_end);
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// Ensure for release.
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if (m_pos > m_end)
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{
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m_pos = m_end;
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}
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}
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AnsiDocumentIterator(const AnsiDocumentIterator& copy) :
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m_pos(copy.m_pos),
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m_end(copy.m_end),
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m_doc(copy.m_doc)
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{
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// Check for debug builds
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PLATFORM_ASSERT(m_pos <= m_end);
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// Ensure for release.
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if (m_pos > m_end)
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{
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m_pos = m_end;
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}
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}
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bool operator == (const AnsiDocumentIterator& 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 AnsiDocumentIterator& other) const
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{
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return !(*this == other);
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}
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char operator * () const
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{
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return charAt(m_pos);
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}
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AnsiDocumentIterator& operator = (const AnsiDocumentIterator& other) = default;
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AnsiDocumentIterator& operator ++ ()
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{
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PLATFORM_ASSERT(m_pos < m_end);
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m_pos++;
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return *this;
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}
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AnsiDocumentIterator& operator -- ()
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{
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m_pos--;
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return *this;
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}
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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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char charAt(Sci::Position position) const
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{
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return m_doc->CharAt(position);
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}
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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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Sci::Position m_end = 0;
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Document* m_doc = nullptr;
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};
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}
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#endif |