pub struct Pat {
pub id: NodeId,
pub kind: PatKind,
pub span: Span,
pub tokens: Option<LazyAttrTokenStream>,
}
Expand description
A match pattern.
Patterns appear in match statements and some other contexts, such as let
and if let
.
Fields§
§id: NodeId
§kind: PatKind
§span: Span
§tokens: Option<LazyAttrTokenStream>
Implementations§
source§impl Pat
impl Pat
sourcepub fn to_ty(&self) -> Option<P<Ty>>
pub fn to_ty(&self) -> Option<P<Ty>>
Attempt reparsing the pattern as a type. This is intended for use by diagnostics.
Trait Implementations§
source§impl HasAttrs for Pat
impl HasAttrs for Pat
source§const SUPPORTS_CUSTOM_INNER_ATTRS: bool = false
const SUPPORTS_CUSTOM_INNER_ATTRS: bool = false
This is
true
if this HasAttrs
might support ‘custom’ (proc-macro) inner
attributes. Attributes like #![cfg]
and #![cfg_attr]
are not
considered ‘custom’ attributes. Read morefn attrs(&self) -> &[Attribute]
fn visit_attrs(&mut self, _f: impl FnOnce(&mut AttrVec))
source§impl HasTokens for Pat
impl HasTokens for Pat
fn tokens(&self) -> Option<&LazyAttrTokenStream>
fn tokens_mut(&mut self) -> Option<&mut Option<LazyAttrTokenStream>>
Auto Trait Implementations§
impl !RefUnwindSafe for Pat
impl !Send for Pat
impl !Sync for Pat
impl Unpin for Pat
impl !UnwindSafe for Pat
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
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: 72 bytes