pub enum DefiningTy<'tcx> {
Closure(DefId, SubstsRef<'tcx>),
Generator(DefId, SubstsRef<'tcx>, Movability),
FnDef(DefId, SubstsRef<'tcx>),
Const(DefId, SubstsRef<'tcx>),
InlineConst(DefId, SubstsRef<'tcx>),
}
Expand description
The “defining type” for this MIR. The key feature of the “defining type” is that it contains the information needed to derive all the universal regions that are in scope as well as the types of the inputs/output from the MIR. In general, early-bound universal regions appear free in the defining type and late-bound regions appear bound in the signature.
Variants
Closure(DefId, SubstsRef<'tcx>)
The MIR is a closure. The signature is found via
ClosureSubsts::closure_sig_ty
.
Generator(DefId, SubstsRef<'tcx>, Movability)
The MIR is a generator. The signature is that generators take
no parameters and return the result of
ClosureSubsts::generator_return_ty
.
FnDef(DefId, SubstsRef<'tcx>)
The MIR is a fn item with the given DefId
and substs. The signature
of the function can be bound then with the fn_sig
query.
Const(DefId, SubstsRef<'tcx>)
The MIR represents some form of constant. The signature then is that it has no inputs and a single return value, which is the value of the constant.
InlineConst(DefId, SubstsRef<'tcx>)
The MIR represents an inline const. The signature has no inputs and a
single return value found via InlineConstSubsts::ty
.
Implementations
sourceimpl<'tcx> DefiningTy<'tcx>
impl<'tcx> DefiningTy<'tcx>
sourcepub fn upvar_tys(self) -> impl Iterator<Item = Ty<'tcx>> + 'tcx
pub fn upvar_tys(self) -> impl Iterator<Item = Ty<'tcx>> + 'tcx
Returns a list of all the upvar types for this MIR. If this is not a closure or generator, there are no upvars, and hence it will be an empty list. The order of types in this list will match up with the upvar order in the HIR, typesystem, and MIR.
sourcepub fn implicit_inputs(self) -> usize
pub fn implicit_inputs(self) -> usize
Number of implicit inputs – notably the “environment” parameter for closures – that appear in MIR but not in the user’s code.
pub fn is_fn_def(&self) -> bool
pub fn is_const(&self) -> bool
pub fn def_id(&self) -> DefId
Trait Implementations
sourceimpl<'tcx> Clone for DefiningTy<'tcx>
impl<'tcx> Clone for DefiningTy<'tcx>
sourcefn clone(&self) -> DefiningTy<'tcx>
fn clone(&self) -> DefiningTy<'tcx>
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresourceimpl<'tcx> Debug for DefiningTy<'tcx>
impl<'tcx> Debug for DefiningTy<'tcx>
impl<'tcx> Copy for DefiningTy<'tcx>
Auto Trait Implementations
impl<'tcx> !RefUnwindSafe for DefiningTy<'tcx>
impl<'tcx> Send for DefiningTy<'tcx>
impl<'tcx> Sync for DefiningTy<'tcx>
impl<'tcx> Unpin for DefiningTy<'tcx>
impl<'tcx> !UnwindSafe for DefiningTy<'tcx>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
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: 24 bytes
Size for each variant:
Closure
: 23 bytesGenerator
: 23 bytesFnDef
: 23 bytesConst
: 23 bytesInlineConst
: 23 bytes