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comment shift_cells_left

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Pere Diaz Bou 2025-05-14 13:20:11 +02:00 • committed by GitHub
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11
core/storage/btree.rs
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@ -4683,6 +4683,17 @@ fn edit_page(
Ok(())
}
/// Shifts the cell pointers in the B-tree page to the left by a specified number of positions.
///
/// # Parameters
/// - `page`: A mutable reference to the `PageContent` representing the B-tree page.
/// - `count_cells`: The total number of cells currently in the page.
/// - `number_to_shift`: The number of cell pointers to shift to the left.
///
/// # Behavior
/// This function modifies the cell pointer array within the page by copying memory regions.
/// It shifts the pointers starting from `number_to_shift` to the beginning of the array,
/// effectively removing the first `number_to_shift` pointers.
fn shift_cells_left(page: &mut PageContent, count_cells: usize, number_to_shift: usize) {
let buf = page.as_ptr();
let (start, _) = page.cell_pointer_array_offset_and_size();