pub enum Scrutinee {
CatchAll {
span: Span,
},
Literal {
value: Literal,
span: Span,
},
Variable {
name: Ident,
span: Span,
},
StructScrutinee {
struct_name: CallPath,
fields: Vec<StructScrutineeField>,
span: Span,
},
EnumScrutinee {
call_path: CallPath,
value: Box<Scrutinee>,
span: Span,
},
Tuple {
elems: Vec<Scrutinee>,
span: Span,
},
Error {
spans: Box<[Span]>,
},
}
Expand description
A Scrutinee is on the left-hand-side of a pattern, and dictates whether or not a pattern will succeed at pattern matching and what, if any, elements will need to be implemented in a desugared if expression.
Variants§
Trait Implementations§
Auto Trait Implementations§
impl RefUnwindSafe for Scrutinee
impl Send for Scrutinee
impl Sync for Scrutinee
impl Unpin for Scrutinee
impl UnwindSafe for Scrutinee
Blanket Implementations§
source§impl<T> AnyDebug for Twhere
T: Any + Debug,
impl<T> AnyDebug for Twhere T: Any + Debug,
source§fn as_any_ref(&self) -> &(dyn Any + 'static)
fn as_any_ref(&self) -> &(dyn Any + 'static)
Returns a reference to the underlying type as
Any
.§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere T: Any,
§fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
Convert
Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
.§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert
Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
.§fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Convert
&Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s.§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert
&mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s.