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Add a line content iterator.

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This commit is contained in:
Syed Daanish
2026-07-28 18:01:48 +01:00
parent ed020792f6
commit 9c84118e63
9 changed files with 179 additions and 9 deletions
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src/vase/buffer/append.cc
+19
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@@ -108,6 +108,25 @@ uint32_t AppendBuffer::find_newline(uint32_t target, uint32_t low, uint32_t high
return chunk * CHUNK_SIZE + l;
}
inline uint32_t AppendBuffer::newline_value_at(uint32_t flat_index) {
uint32_t chunk = flat_index / CHUNK_SIZE;
uint32_t off = flat_index % CHUNK_SIZE;
return (*newlines[chunk])[off];
}
uint32_t AppendBuffer::next_newline(uint32_t pos) {
uint32_t total = CHUNK_SIZE * (uint32_t)(newlines.size() - 1) + l_offset;
uint32_t idx = find_newline(pos, 0, total);
return idx >= total ? UINT32_MAX : newline_value_at(idx);
}
uint32_t AppendBuffer::nth_newline(uint32_t pos, uint32_t n) {
uint32_t total = CHUNK_SIZE * (uint32_t)(newlines.size() - 1) + l_offset;
uint32_t idx0 = find_newline(pos, 0, total);
uint32_t idx = idx0 + (n - 1);
return idx >= total ? UINT32_MAX : newline_value_at(idx);
}
uint32_t AppendBuffer::count_lines(uint32_t pos, uint32_t length) {
if (newlines.empty())
return 0;