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Optimize BufferIterator to avoid a lot of pointer chasing

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This commit is contained in:
Maxime Coste 2015-11-07 16:55:48 +00:00
parent 04c8334c98
commit 6bb775241c
2 changed files with 31 additions and 6 deletions
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2
src/buffer.hh
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@ -57,6 +57,8 @@ public:
private: private:
SafePtr<const Buffer> m_buffer; SafePtr<const Buffer> m_buffer;
ByteCoord m_coord; ByteCoord m_coord;
ByteCount m_line_length;
LineCount m_line_count;
}; };
using BufferLines = Vector<StringDataPtr, MemoryDomain::BufferContent>; using BufferLines = Vector<StringDataPtr, MemoryDomain::BufferContent>;

35
src/buffer.inl.hh
View File

@ -108,19 +108,23 @@ inline ByteCoord Buffer::end_coord() const
} }
inline BufferIterator::BufferIterator(const Buffer& buffer, ByteCoord coord) inline BufferIterator::BufferIterator(const Buffer& buffer, ByteCoord coord)
: m_buffer(&buffer), m_coord(coord) : m_buffer(&buffer), m_coord(coord),
m_line_length((*m_buffer)[m_coord.line].length()),
m_line_count(buffer.line_count())
{ {
kak_assert(m_buffer and m_buffer->is_valid(m_coord)); kak_assert(m_buffer and m_buffer->is_valid(m_coord));
} }
inline bool BufferIterator::operator==(const BufferIterator& iterator) const inline bool BufferIterator::operator==(const BufferIterator& iterator) const
{ {
return (m_buffer == iterator.m_buffer and m_coord == iterator.m_coord); kak_assert(m_buffer == iterator.m_buffer);
return m_coord == iterator.m_coord;
} }
inline bool BufferIterator::operator!=(const BufferIterator& iterator) const inline bool BufferIterator::operator!=(const BufferIterator& iterator) const
{ {
return (m_buffer != iterator.m_buffer or m_coord != iterator.m_coord); kak_assert(m_buffer == iterator.m_buffer);
return m_coord != iterator.m_coord;
} }
inline bool BufferIterator::operator<(const BufferIterator& iterator) const inline bool BufferIterator::operator<(const BufferIterator& iterator) const
@ -178,25 +182,44 @@ inline BufferIterator BufferIterator::operator-(ByteCount size) const
inline BufferIterator& BufferIterator::operator+=(ByteCount size) inline BufferIterator& BufferIterator::operator+=(ByteCount size)
{ {
m_coord = m_buffer->advance(m_coord, size); m_coord = m_buffer->advance(m_coord, size);
m_line_length = m_buffer->line_storage(m_coord.line)->length;
return *this; return *this;
} }
inline BufferIterator& BufferIterator::operator-=(ByteCount size) inline BufferIterator& BufferIterator::operator-=(ByteCount size)
{ {
m_coord = m_buffer->advance(m_coord, -size); m_coord = m_buffer->advance(m_coord, -size);
m_line_length = m_buffer->line_storage(m_coord.line)->length;
return *this; return *this;
} }
[[gnu::always_inline]]
inline BufferIterator& BufferIterator::operator++() inline BufferIterator& BufferIterator::operator++()
{ {
m_coord = m_buffer->next(m_coord); if (m_coord.column < m_line_length - 1)
++m_coord.column;
else if (m_coord.line == m_line_count - 1)
m_coord.column = m_line_length;
else
{
++m_coord.line;
m_coord.column = 0;
m_line_length = m_buffer->line_storage(m_coord.line)->length;
}
return *this; return *this;
} }
inline BufferIterator& BufferIterator::operator--() inline BufferIterator& BufferIterator::operator--()
{ {
m_coord = m_buffer->prev(m_coord); if (m_coord.column == 0)
{
if (m_coord.line > 0)
{
m_line_length = m_buffer->line_storage(--m_coord.line)->length;
m_coord.column = m_line_length - 1;
}
}
else
--m_coord.column;
return *this; return *this;
} }