pub(crate) enum MetaVarExprConcatElem {
Ident(Ident),
Literal(Symbol),
Var(Ident),
}
Expand description
Indicates what is placed in a concat
parameter. For example, literals
(${concat("foo", "bar")}
) or adhoc identifiers (${concat(foo, bar)}
).
Variants§
Ident(Ident)
Identifier WITHOUT a preceding dollar sign, which means that this identifier should be interpreted as a literal.
Literal(Symbol)
For example, a number or a string.
Var(Ident)
Identifier WITH a preceding dollar sign, which means that this identifier should be expanded and interpreted as a variable.
Trait Implementations§
source§impl Debug for MetaVarExprConcatElem
impl Debug for MetaVarExprConcatElem
source§impl<__D: SpanDecoder> Decodable<__D> for MetaVarExprConcatElem
impl<__D: SpanDecoder> Decodable<__D> for MetaVarExprConcatElem
source§impl<__E: SpanEncoder> Encodable<__E> for MetaVarExprConcatElem
impl<__E: SpanEncoder> Encodable<__E> for MetaVarExprConcatElem
source§impl PartialEq for MetaVarExprConcatElem
impl PartialEq for MetaVarExprConcatElem
impl StructuralPartialEq for MetaVarExprConcatElem
Auto Trait Implementations§
impl Freeze for MetaVarExprConcatElem
impl RefUnwindSafe for MetaVarExprConcatElem
impl !Send for MetaVarExprConcatElem
impl !Sync for MetaVarExprConcatElem
impl Unpin for MetaVarExprConcatElem
impl UnwindSafe for MetaVarExprConcatElem
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
source§impl<T> Filterable for T
impl<T> Filterable for T
source§fn filterable(
self,
filter_name: &'static str,
) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
Creates a filterable data provider with the given name for debugging. Read more
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
source§impl<I, T> UpcastFrom<I, T> for T
impl<I, T> UpcastFrom<I, T> for T
fn upcast_from(from: T, _tcx: I) -> T
source§impl<T> WithSubscriber for T
impl<T> WithSubscriber for T
source§fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
source§fn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
impl<T> ErasedDestructor for Twhere
T: 'static,
impl<T> MaybeSendSync for T
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 16 bytes
Size for each variant:
Ident
: 12 bytesLiteral
: 4 bytesVar
: 12 bytes