Struct OpenReport 

pub struct OpenReport {
    pub progress: Arc<FooterProgress>,
    pub meter: Arc<Meter>,
    pub remembered: Option<CacheManager>,
    /* private fields */
}

What an open reports as it goes: how far its footer pass has got, and what the work has cost so far.

The two travel together down every route an open can take, so they are handed down together. Both are shared with the threads doing the reading, and both belong to the open that created them — see Meter for why a new open builds new ones rather than clearing these.

Fields

progress: Arc<FooterProgress>

How far the footer pass has got, for the loading screen.

meter: Arc<Meter>

What the work has cost, for the Info panel.

remembered: Option<CacheManager>

Where to look for what a previous open of this dataset learned, and where to leave what this one learns. None for a route with nowhere to keep it, and for the tests that do not care.

It travels with the other two because it belongs to the same moment — an open reports what it is doing, records what it cost, and remembers what it found, and all three are handed down the same routes.

Trait Implementations

impl Clone for OpenReport

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OpenReport

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

Formats the value using the given formatter.

impl Default for OpenReport

fn default() -> Self

Returns the “default value” for a type.