Struct Step 

pub struct Step<'a> {
    pub before: &'a Document,
    pub after: &'a Document,
}

The two documents a commit stands between. A subject is read from before — a step frames where the thing was, which is what the camera has to reach before the change is drawn — and from after only where the commit itself brought it into being. Between them they hold every subject a commit can name, which is what a delete’s footprint needs now that a delete removes rather than tombstones.

Fields

before: &'a Document

after: &'a Document

Implementations

impl<'a> Step<'a>

pub fn block(self, id: BlockId) -> Option<&'a Block>

pub fn pin(self, id: PinId) -> Option<&'a Pin>

pub fn route(self, id: RouteId) -> Option<&'a Route>

pub fn route_label(self, id: RouteLabelId) -> Option<&'a RouteLabel>

pub fn text(self, id: TextId) -> Option<&'a Text>

pub fn area(self, id: AreaId) -> Option<&'a Area>

pub fn image(self, id: ImageId) -> Option<&'a Image>

Trait Implementations

impl<'a> Clone for Step<'a>

fn clone(&self) -> Step<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Step<'a>