pub enum Delimiter {
Parenthesis,
Brace,
Bracket,
Invisible,
}
Expand description
Describes how a sequence of token trees is delimited.
Cannot use proc_macro::Delimiter
directly because this
structure should implement some additional traits.
Variants§
Parenthesis
( ... )
Brace
{ ... }
Bracket
[ ... ]
Invisible
∅ ... ∅
An invisible delimiter, that may, for example, appear around tokens coming from a
“macro variable” $var
. It is important to preserve operator priorities in cases like
$var * 3
where $var
is 1 + 2
.
Invisible delimiters might not survive roundtrip of a token stream through a string.
Trait Implementations§
source§impl<__D: SpanDecoder> Decodable<__D> for Delimiter
impl<__D: SpanDecoder> Decodable<__D> for Delimiter
source§impl<__E: SpanEncoder> Encodable<__E> for Delimiter
impl<__E: SpanEncoder> Encodable<__E> for Delimiter
source§impl<__CTX> HashStable<__CTX> for Delimiterwhere
__CTX: HashStableContext,
impl<__CTX> HashStable<__CTX> for Delimiterwhere
__CTX: HashStableContext,
fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)
impl Copy for Delimiter
impl Eq for Delimiter
impl StructuralPartialEq for Delimiter
Auto Trait Implementations§
impl Freeze for Delimiter
impl RefUnwindSafe for Delimiter
impl Send for Delimiter
impl Sync for Delimiter
impl Unpin for Delimiter
impl UnwindSafe for Delimiter
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
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.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>
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>
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<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,
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: 1 byte
Size for each variant:
Parenthesis
: 0 bytesBrace
: 0 bytesBracket
: 0 bytesInvisible
: 0 bytes