Struct SwitchTree 

pub struct SwitchTree {
    pub id: SwitchId,
    pub scrutinee: Expr,
    pub body: Box<Stmt>,
    pub range: SourceRange,
}

A switch whose body has been left as a statement tree.

The CFG lowering walks the tree and turns every Stmt::Case it finds into an edge from this statement’s dispatch, wherever in the tree it sits. That is what makes Duff’s device work, and it is why sema does not need to flatten the body into groups in that mode.

Fields

id: SwitchId

This switch’s identity, which break and the labels refer to.

scrutinee: Expr

The controlling expression, after the integer promotions.

body: Box<Stmt>

The body, with its labels still in place.

range: SourceRange

Where the statement was written.

Trait Implementations

impl Clone for SwitchTree

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 SwitchTree

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

Formats the value using the given formatter.