PieceTable: newline test from the line index, memchr rebuild; remove dead code

GetLine and LineColToByteOffset fetched each line's last byte (a piece
lookup, an allocation and a cache write) to see whether it was a newline;
the line index already says so: every line but the last ends at one.
LineColToByteOffset runs on every insert. RebuildLineIndex scans with
memchr instead of byte by byte.

Removed, having no callers: OptimizedSearch (built only into its own
test), UndoNodePool.h, SwapManager::RecordSplit/RecordJoin (replay still
reads SPLIT/JOIN), PieceTable::Reserve/Capacity and its capacity
constructor, Buffer's write-only render column, Editor's mode, no-kill,
dirtyex and repeatable flags and the UCount getter, and
RetryPolicy::Conservative.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015rcVQiiWyTzoNrsvLSaAfB
This commit is contained in:
Claude
2026-09-24 12:19:59 -07:00
committed by Kyle Isom
parent 6bc3a6e0af
commit 306a337516
15 changed files with 16 additions and 398 deletions
-41
View File
@@ -1202,47 +1202,6 @@ SwapManager::RecordDelete(Buffer &buf, int row, int col, std::size_t len)
}
void
SwapManager::RecordSplit(Buffer &buf, int row, int col)
{
{
std::lock_guard<std::mutex> lg(mtx_);
auto it = journals_.find(&buf);
if (it == journals_.end() || it->second.suspended)
return;
}
Pending p;
p.buf = &buf;
p.type = SwapRecType::SPLIT;
// payload v1: [encver u8=1][row u32][col u32]
p.payload.push_back(1);
put_le32(p.payload, static_cast<std::uint32_t>(std::max(0, row)));
put_le32(p.payload, static_cast<std::uint32_t>(std::max(0, col)));
enqueue(std::move(p));
maybe_request_checkpoint(buf, 1);
}
void
SwapManager::RecordJoin(Buffer &buf, int row)
{
{
std::lock_guard<std::mutex> lg(mtx_);
auto it = journals_.find(&buf);
if (it == journals_.end() || it->second.suspended)
return;
}
Pending p;
p.buf = &buf;
p.type = SwapRecType::JOIN;
// payload v1: [encver u8=1][row u32]
p.payload.push_back(1);
put_le32(p.payload, static_cast<std::uint32_t>(std::max(0, row)));
enqueue(std::move(p));
maybe_request_checkpoint(buf, 1);
}
void
SwapManager::maybe_request_checkpoint(Buffer &buf, const std::size_t approx_edit_bytes)
{