Enum rustc::mir::Rvalue

pub enum Rvalue<'tcx> {
    Use(Operand<'tcx>),
    Repeat(Operand<'tcx>, ConstUsize),
    Ref(&'tcx Region, BorrowKind, Lvalue<'tcx>),
    Len(Lvalue<'tcx>),
    Cast(CastKind, Operand<'tcx>, Ty<'tcx>),
    BinaryOp(BinOp, Operand<'tcx>, Operand<'tcx>),
    CheckedBinaryOp(BinOp, Operand<'tcx>, Operand<'tcx>),
    UnaryOp(UnOp, Operand<'tcx>),
    Discriminant(Lvalue<'tcx>),
    Box(Ty<'tcx>),
    Aggregate(AggregateKind<'tcx>, Vec<Operand<'tcx>>),
}

🔬 This is a nightly-only experimental API. (rustc_private)

Rvalues

Variants

Use(Operand<'tcx>)

🔬 This is a nightly-only experimental API. (rustc_private)

x (either a move or copy, depending on type of x)

Repeat(Operand<'tcx>, ConstUsize)

🔬 This is a nightly-only experimental API. (rustc_private)

[x; 32]

Ref(&'tcx Region, BorrowKind, Lvalue<'tcx>)

🔬 This is a nightly-only experimental API. (rustc_private)

&x or &mut x

Len(Lvalue<'tcx>)

🔬 This is a nightly-only experimental API. (rustc_private)

length of a [X] or [X;n] value

Cast(CastKind, Operand<'tcx>, Ty<'tcx>)

🔬 This is a nightly-only experimental API. (rustc_private)

BinaryOp(BinOp, Operand<'tcx>, Operand<'tcx>)

🔬 This is a nightly-only experimental API. (rustc_private)

CheckedBinaryOp(BinOp, Operand<'tcx>, Operand<'tcx>)

🔬 This is a nightly-only experimental API. (rustc_private)

UnaryOp(UnOp, Operand<'tcx>)

🔬 This is a nightly-only experimental API. (rustc_private)

Discriminant(Lvalue<'tcx>)

🔬 This is a nightly-only experimental API. (rustc_private)

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.

Box(Ty<'tcx>)

🔬 This is a nightly-only experimental API. (rustc_private)

Creates an uninitialized Box

Aggregate(AggregateKind<'tcx>, Vec<Operand<'tcx>>)

🔬 This is a nightly-only experimental API. (rustc_private)

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>

fn ty<'a, 'gcx>(&self, mir: &Mir<'tcx>, tcx: TyCtxt<'a, 'gcx, 'tcx>) -> Ty<'tcx>

🔬 This is a nightly-only experimental API. (rustc_private)

Trait Implementations

impl<'tcx> Clone for Rvalue<'tcx>

fn clone(&self) -> Rvalue<'tcx>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'tcx> Encodable for Rvalue<'tcx>

fn encode<__S: Encoder>(&self, __arg_0: &mut __S) -> Result<(), __S::Error>

🔬 This is a nightly-only experimental API. (rustc_private)

deprecated in favor of rustc-serialize on crates.io

impl<'tcx> Decodable for Rvalue<'tcx>

fn decode<__D: Decoder>(__arg_0: &mut __D) -> Result<Rvalue<'tcx>, __D::Error>

🔬 This is a nightly-only experimental API. (rustc_private)

deprecated in favor of rustc-serialize on crates.io

impl<'tcx> Debug for Rvalue<'tcx>

fn fmt(&self, fmt: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<'tcx> TypeFoldable<'tcx> for Rvalue<'tcx>

fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(&self,
                                                          folder: &mut F)
                                                          -> Self

🔬 This is a nightly-only experimental API. (rustc_private)

fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(&self,
                                                    folder: &mut F)
                                                    -> Self

🔬 This is a nightly-only experimental API. (rustc_private)

fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn has_regions_escaping_depth(&self, depth: u32) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn has_escaping_regions(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn has_type_flags(&self, flags: TypeFlags) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn has_projection_types(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn references_error(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn has_param_types(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn has_self_ty(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn has_infer_types(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn needs_infer(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn needs_subst(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn has_re_skol(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn has_closure_types(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn has_erasable_regions(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn is_normalized_for_trans(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

fn is_global(&self) -> bool

🔬 This is a nightly-only experimental API. (rustc_private)

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.