Struct rustc_ast::ast::TyAliasWhereClause
source · pub struct TyAliasWhereClause(pub bool, pub Span);
Expand description
The location of a where clause on a TyAlias
(Span
) and whether there was
a where
keyword (bool
). This is split out from WhereClause
, since there
are two locations for where clause on type aliases, but their predicates
are concatenated together.
Take this example:
ⓘ
trait Foo {
type Assoc<'a, 'b> where Self: 'a, Self: 'b;
}
impl Foo for () {
type Assoc<'a, 'b> where Self: 'a = () where Self: 'b;
// ^^^^^^^^^^^^^^ first where clause
// ^^^^^^^^^^^^^^ second where clause
}
If there is no where clause, then this is false
with DUMMY_SP
.
Tuple Fields§
§0: bool
§1: Span
Trait Implementations§
source§impl Clone for TyAliasWhereClause
impl Clone for TyAliasWhereClause
source§fn clone(&self) -> TyAliasWhereClause
fn clone(&self) -> TyAliasWhereClause
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for TyAliasWhereClause
impl Debug for TyAliasWhereClause
source§impl<__D: Decoder> Decodable<__D> for TyAliasWhereClause
impl<__D: Decoder> Decodable<__D> for TyAliasWhereClause
source§impl Default for TyAliasWhereClause
impl Default for TyAliasWhereClause
source§fn default() -> TyAliasWhereClause
fn default() -> TyAliasWhereClause
Returns the “default value” for a type. Read more
source§impl<__E: Encoder> Encodable<__E> for TyAliasWhereClause
impl<__E: Encoder> Encodable<__E> for TyAliasWhereClause
impl Copy for TyAliasWhereClause
Auto Trait Implementations§
impl RefUnwindSafe for TyAliasWhereClause
impl !Send for TyAliasWhereClause
impl !Sync for TyAliasWhereClause
impl Unpin for TyAliasWhereClause
impl UnwindSafe for TyAliasWhereClause
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: 12 bytes