Enum SizeMode 

pub enum SizeMode {
    Skip,
    Breakdown,
    BreakdownUnder(PathBuf),
}

How much work a scan may do to size what it claims.

Variants

Skip

Record claims without enumerating them. The default, and the performance thesis.

Breakdown

Sum each claim’s subtree. What “show me a breakdown” costs — an order of magnitude over the scan it prices (4.6 s to 55.8 s over one real ~/repos), which is why nothing does it unasked.

BreakdownUnder(PathBuf)

Sum the subtree of every claim the named path touches, and nothing else.

The whole-tree breakdown is the only honest answer to “how much do I get back from all of this”, and it is also the one nobody wants to wait for twice. Scoping it is what makes the number reachable at a price the user chooses: pay for the one subtree in question and leave the rest reading Unmeasured, which it already was.

It is also what --breakdown-under hands the tree: a reader who wants one subtree priced and the rest left alone gets exactly that, and every other row keeps its dash.

The scope has to be spelled the way the walk spells its hits — the scan root’s own prefix and all — because the comparison is by path. Anchoring it is the caller’s job; see the command line’s anchor.

Trait Implementations

impl Clone for SizeMode

fn clone(&self) -> SizeMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SizeMode

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

Formats the value using the given formatter.

impl Default for SizeMode

fn default() -> SizeMode

Returns the “default value” for a type.

impl Eq for SizeMode

impl PartialEq for SizeMode

fn eq(&self, other: &SizeMode) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SizeMode