Struct BandedMove 

pub struct BandedMove;

A band stays together: a column moves only among the children of its innermost band, a band moves as a whole, and a zone change takes the whole top-level band.

Trait Implementations

impl Clone for BandedMove

fn clone(&self) -> BandedMove

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl ColumnMovePolicy for BandedMove

fn is_allowed( &self, context: &ColumnMoveContext<'_>, block: Range<usize>, gap: usize, ) -> bool

Whether block (a range of context.columns()) may be inserted at gap (0..=columns().len(), counted before the block is removed).

fn zone_block( &self, context: &ColumnMoveContext<'_>, column: ColumnIx, ) -> Range<usize>

The columns that change zone together with column: a range of context.columns() that contains it.

fn normalize(&self, order: &mut ColumnOrder<'_>)

Restores the policy’s invariants after the schema is built or a layout is restored. Stable: a valid order stays as it is.

impl Debug for BandedMove

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for BandedMove

fn default() -> BandedMove

Returns the “default value” for a type.

impl Copy for BandedMove