// Copyright (C) 2013 Google Inc. All rights reserved.
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#ifndef TextRunIterator_h
#define TextRunIterator_h
#include "platform/text/TextRun.h"
namespace WebCore {
class TextRunIterator {
public:
TextRunIterator()
: m_textRun(0)
, m_offset(0)
{
}
TextRunIterator(const TextRun* textRun, unsigned offset)
: m_textRun(textRun)
, m_offset(offset)
{
}
TextRunIterator(const TextRunIterator& other)
: m_textRun(other.m_textRun)
, m_offset(other.m_offset)
{
}
unsigned offset() const { return m_offset; }
void increment() { m_offset++; }
bool atEnd() const { return !m_textRun || m_offset >= m_textRun->length(); }
UChar current() const { return (*m_textRun)[m_offset]; }
WTF::Unicode::Direction direction() const { return atEnd() ? WTF::Unicode::OtherNeutral : WTF::Unicode::direction(current()); }
bool atParagraphSeparator() const { return current() == '\n'; }
bool operator==(const TextRunIterator& other)
{
return m_offset == other.m_offset && m_textRun == other.m_textRun;
}
bool operator!=(const TextRunIterator& other) { return !operator==(other); }
private:
const TextRun* m_textRun;
int m_offset;
};
} // namespace WebCore
#endif // TextRunIterator_h