Enum rustc::mir::Rvalue [−][src]
pub enum Rvalue<'tcx> { Use(Operand<'tcx>), Repeat(Operand<'tcx>, u64), Ref(Region<'tcx>, BorrowKind, Place<'tcx>), Len(Place<'tcx>), Cast(CastKind, Operand<'tcx>, Ty<'tcx>), BinaryOp(BinOp, Operand<'tcx>, Operand<'tcx>), CheckedBinaryOp(BinOp, Operand<'tcx>, Operand<'tcx>), NullaryOp(NullOp, Ty<'tcx>), UnaryOp(UnOp, Operand<'tcx>), Discriminant(Place<'tcx>), Aggregate(Box<AggregateKind<'tcx>>, Vec<Operand<'tcx>>), }
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Rvalues
Variants
Use(Operand<'tcx>)
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x (either a move or copy, depending on type of x)
Repeat(Operand<'tcx>, u64)
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[x; 32]
Ref(Region<'tcx>, BorrowKind, Place<'tcx>)
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&x or &mut x
Len(Place<'tcx>)
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length of a [X] or [X;n] value
Cast(CastKind, Operand<'tcx>, Ty<'tcx>)
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BinaryOp(BinOp, Operand<'tcx>, Operand<'tcx>)
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CheckedBinaryOp(BinOp, Operand<'tcx>, Operand<'tcx>)
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NullaryOp(NullOp, Ty<'tcx>)
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UnaryOp(UnOp, Operand<'tcx>)
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Discriminant(Place<'tcx>)
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Read the discriminant of an ADT.
Undefined (i.e. no effort is made to make it defined, but there’s no reason why it cannot be defined to return, say, a 0) if ADT is not an enum.
Aggregate(Box<AggregateKind<'tcx>>, Vec<Operand<'tcx>>)
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Create an aggregate value, like a tuple or struct. This is
only needed because we want to distinguish dest = Foo { x: ..., y: ... }
from dest.x = ...; dest.y = ...;
in the case
that Foo
has a destructor. These rvalues can be optimized
away after type-checking and before lowering.
Methods
impl<'tcx> Rvalue<'tcx>
[src]
impl<'tcx> Rvalue<'tcx>
pub fn ty<'a, 'gcx, D>(
&self,
local_decls: &D,
tcx: TyCtxt<'a, 'gcx, 'tcx>
) -> Ty<'tcx> where
D: HasLocalDecls<'tcx>,
[src]
pub fn ty<'a, 'gcx, D>(
&self,
local_decls: &D,
tcx: TyCtxt<'a, 'gcx, 'tcx>
) -> Ty<'tcx> where
D: HasLocalDecls<'tcx>,
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pub fn initialization_state(&self) -> RvalueInitializationState
[src]
pub fn initialization_state(&self) -> RvalueInitializationState
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Returns whether this rvalue is deeply initialized (most rvalues) or
whether its only shallowly initialized (Rvalue::Box
).
Trait Implementations
impl<'a, 'gcx> HashStable<StableHashingContext<'a>> for Rvalue<'gcx>
[src]
impl<'a, 'gcx> HashStable<StableHashingContext<'a>> for Rvalue<'gcx>
fn hash_stable<W: StableHasherResult>(
&self,
hcx: &mut StableHashingContext<'a>,
hasher: &mut StableHasher<W>
)
[src]
fn hash_stable<W: StableHasherResult>(
&self,
hcx: &mut StableHashingContext<'a>,
hasher: &mut StableHasher<W>
)
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impl<'tcx> Clone for Rvalue<'tcx>
[src]
impl<'tcx> Clone for Rvalue<'tcx>
fn clone(&self) -> Rvalue<'tcx>
[src]
fn clone(&self) -> Rvalue<'tcx>
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl<'tcx> Encodable for Rvalue<'tcx>
[src]
impl<'tcx> Encodable for Rvalue<'tcx>
fn encode<__S: Encoder>(&self, s: &mut __S) -> Result<(), __S::Error>
[src]
fn encode<__S: Encoder>(&self, s: &mut __S) -> Result<(), __S::Error>
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impl<'tcx> Decodable for Rvalue<'tcx>
[src]
impl<'tcx> Decodable for Rvalue<'tcx>
fn decode<__D: Decoder>(d: &mut __D) -> Result<Rvalue<'tcx>, __D::Error>
[src]
fn decode<__D: Decoder>(d: &mut __D) -> Result<Rvalue<'tcx>, __D::Error>
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impl<'tcx> Debug for Rvalue<'tcx>
[src]
impl<'tcx> Debug for Rvalue<'tcx>
fn fmt(&self, fmt: &mut Formatter) -> Result
[src]
fn fmt(&self, fmt: &mut Formatter) -> Result
Formats the value using the given formatter. Read more
impl<'tcx> TypeFoldable<'tcx> for Rvalue<'tcx>
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impl<'tcx> TypeFoldable<'tcx> for Rvalue<'tcx>
fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
&self,
folder: &mut F
) -> Self
[src]
fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
&self,
folder: &mut F
) -> Self
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fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool
[src]
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool
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fn fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
&self,
folder: &mut F
) -> Self
[src]
fn fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(
&self,
folder: &mut F
) -> Self
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fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool
[src]
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool
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fn has_regions_escaping_depth(&self, depth: u32) -> bool
[src]
fn has_regions_escaping_depth(&self, depth: u32) -> bool
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fn has_escaping_regions(&self) -> bool
[src]
fn has_escaping_regions(&self) -> bool
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fn has_type_flags(&self, flags: TypeFlags) -> bool
[src]
fn has_type_flags(&self, flags: TypeFlags) -> bool
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fn has_projections(&self) -> bool
[src]
fn has_projections(&self) -> bool
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fn references_error(&self) -> bool
[src]
fn references_error(&self) -> bool
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fn has_param_types(&self) -> bool
[src]
fn has_param_types(&self) -> bool
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fn has_self_ty(&self) -> bool
[src]
fn has_self_ty(&self) -> bool
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fn has_infer_types(&self) -> bool
[src]
fn has_infer_types(&self) -> bool
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fn needs_infer(&self) -> bool
[src]
fn needs_infer(&self) -> bool
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fn has_skol(&self) -> bool
[src]
fn has_skol(&self) -> bool
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fn needs_subst(&self) -> bool
[src]
fn needs_subst(&self) -> bool
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fn has_re_skol(&self) -> bool
[src]
fn has_re_skol(&self) -> bool
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fn has_closure_types(&self) -> bool
[src]
fn has_closure_types(&self) -> bool
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fn has_free_regions(&self) -> bool
[src]
fn has_free_regions(&self) -> bool
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"Free" regions in this context means that it has any region that is not (a) erased or (b) late-bound. Read more
fn has_erasable_regions(&self) -> bool
[src]
fn has_erasable_regions(&self) -> bool
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True if there any any un-erased free regions.
fn is_global(&self) -> bool
[src]
fn is_global(&self) -> bool
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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching. Errs on the side of returning false. Read more