Enum SceneEdit 

#[non_exhaustive]
pub enum SceneEdit {
    Change(ItemChange),
    Removed {
        id: ItemId,
        salvage: Salvage,
    },
}

One edit inside a SceneTransactionRecord, in application order.

Invert a transaction by walking edits in reverse and applying each old; a Removed inverts to Scene::restore.

Only a removal needs an owning variant. Every other mutator either carries its own old in the ItemChange or hands the replaced value straight back to its caller — Scene::replace_item returns the box it swapped out, so the app that called it already owns what it would need to put back.

A Change here always satisfies ItemChange::is_edit: the scene’s derived notifications never reach a record. See the module header for the three and why.

#[non_exhaustive]: this crate has out-of-tree consumers.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Change(ItemChange)

Any non-removal change, verbatim from the notification channel.

Removed

A removal, with what it destroyed. Descendants come before the named root, the order remove announces in.

Fields

id: ItemId

The removed item.

salvage: Salvage

Its contents, or a note that the caller kept them.

Trait Implementations

impl Debug for SceneEdit

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

Formats the value using the given formatter.