94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
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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 <iterator>
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#include <vector>
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#include <memory>
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#include "Platform.h"
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#include "Position.h"
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namespace Scintilla {
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class Document;
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class UTF8DocumentIterator : public std::iterator<std::bidirectional_iterator_tag, wchar_t>
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{
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public:
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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 ++ ()
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{
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PLATFORM_ASSERT(m_pos < m_end);
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if (m_utf16Length == 2 && m_characterIndex == 0)
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{
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m_characterIndex = 1;
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}
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else
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{
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m_pos += m_utf8Length;
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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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m_characterIndex = 0;
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readCharacter();
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}
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return *this;
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}
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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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