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#ifndef buffer_inl_h_INCLUDED
#define buffer_inl_h_INCLUDED
#include "assert.hh"
namespace Kakoune
{
[[gnu::always_inline]]
inline char Buffer::byte_at(ByteCoord c) const
{
kak_assert(c.line < line_count() and c.column < m_lines[c.line].length());
return m_lines[c.line][c.column];
}
inline ByteCoord Buffer::next(ByteCoord coord) const
{
if (coord.column < m_lines[coord.line].length() - 1)
++coord.column;
else if (coord.line == m_lines.size() - 1)
coord.column = m_lines.back().length();
else
{
++coord.line;
coord.column = 0;
}
return coord;
}
inline ByteCoord Buffer::prev(ByteCoord coord) const
{
if (coord.column == 0)
{
if (coord.line > 0)
coord.column = m_lines[--coord.line].length() - 1;
}
else
--coord.column;
return coord;
}
inline ByteCount Buffer::distance(ByteCoord begin, ByteCoord end) const
{
if (begin > end)
return -distance(end, begin);
ByteCount res = 0;
for (LineCount l = begin.line; l <= end.line; ++l)
{
ByteCount len = m_lines[l].length();
res += len;
if (l == begin.line)
res -= begin.column;
if (l == end.line)
res -= len - end.column;
}
return res;
}
inline bool Buffer::is_valid(ByteCoord c) const
{
if (c.line < 0 or c.column < 0)
return false;
return (c.line < line_count() and c.column < m_lines[c.line].length()) or
(c.line == line_count() - 1 and c.column == m_lines.back().length()) or
(c.line == line_count() and c.column == 0);
}
inline bool Buffer::is_end(ByteCoord c) const
{
return c >= end_coord();
}
inline BufferIterator Buffer::begin() const
{
return BufferIterator(*this, { 0_line, 0 });
}
inline BufferIterator Buffer::end() const
{
return BufferIterator{*this, end_coord()};
}
[[gnu::always_inline]]
inline LineCount Buffer::line_count() const
{
return LineCount(m_lines.size());
}
inline size_t Buffer::timestamp() const
{
return m_changes.size();
}
inline memoryview<Buffer::Change> Buffer::changes_since(size_t timestamp) const
{
return { m_changes.data() + timestamp,
m_changes.data() + m_changes.size() };
}
inline ByteCoord Buffer::back_coord() const
{
return { line_count() - 1, m_lines.back().length() - 1 };
}
inline ByteCoord Buffer::end_coord() const
{
if (m_lines.empty())
return { 0_line, 0 };
return { line_count() - 1, m_lines.back().length() };
}
inline BufferIterator::BufferIterator(const Buffer& buffer, ByteCoord coord)
: m_buffer(&buffer), m_coord(coord)
{
kak_assert(m_buffer and m_buffer->is_valid(m_coord));
}
inline bool BufferIterator::operator==(const BufferIterator& iterator) const
{
return (m_buffer == iterator.m_buffer and m_coord == iterator.m_coord);
}
inline bool BufferIterator::operator!=(const BufferIterator& iterator) const
{
return (m_buffer != iterator.m_buffer or m_coord != iterator.m_coord);
}
inline bool BufferIterator::operator<(const BufferIterator& iterator) const
{
kak_assert(m_buffer == iterator.m_buffer);
return (m_coord < iterator.m_coord);
}
inline bool BufferIterator::operator<=(const BufferIterator& iterator) const
{
kak_assert(m_buffer == iterator.m_buffer);
return (m_coord <= iterator.m_coord);
}
inline bool BufferIterator::operator>(const BufferIterator& iterator) const
{
kak_assert(m_buffer == iterator.m_buffer);
return (m_coord > iterator.m_coord);
}
inline bool BufferIterator::operator>=(const BufferIterator& iterator) const
{
kak_assert(m_buffer == iterator.m_buffer);
return (m_coord >= iterator.m_coord);
}
[[gnu::always_inline]]
inline char BufferIterator::operator*() const
{
return m_buffer->byte_at(m_coord);
}
inline char BufferIterator::operator[](size_t n) const
{
return m_buffer->byte_at(m_buffer->advance(m_coord, n));
}
inline size_t BufferIterator::operator-(const BufferIterator& iterator) const
{
kak_assert(m_buffer == iterator.m_buffer);
return (size_t)(int)m_buffer->distance(iterator.m_coord, m_coord);
}
inline BufferIterator BufferIterator::operator+(ByteCount size) const
{
kak_assert(m_buffer);
return { *m_buffer, m_buffer->advance(m_coord, size) };
}
inline BufferIterator BufferIterator::operator-(ByteCount size) const
{
return { *m_buffer, m_buffer->advance(m_coord, -size) };
}
inline BufferIterator& BufferIterator::operator+=(ByteCount size)
{
return *this = (*this + size);
}
inline BufferIterator& BufferIterator::operator-=(ByteCount size)
{
return *this = (*this - size);
}
[[gnu::always_inline]]
inline BufferIterator& BufferIterator::operator++()
{
m_coord = m_buffer->next(m_coord);
return *this;
}
inline BufferIterator& BufferIterator::operator--()
{
m_coord = m_buffer->prev(m_coord);
return *this;
}
inline BufferIterator BufferIterator::operator++(int)
{
BufferIterator save = *this;
++*this;
return save;
}
inline BufferIterator BufferIterator::operator--(int)
{
BufferIterator save = *this;
--*this;
return save;
}
}
#endif // buffer_inl_h_INCLUDED
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