Enum rustc::mir::Operand

pub enum Operand<'tcx> {
    Copy(Place<'tcx>),
    Move(Place<'tcx>),
    Constant(Box<Constant<'tcx>>),
}

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These are values that can appear inside an rvalue (or an index place). They are intentionally limited to prevent rvalues from being nested in one another.

Variants

Copy(Place<'tcx>)

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Copy: The value must be available for use afterwards.

This implies that the type of the place must be Copy; this is true by construction during build, but also checked by the MIR type checker.

Move(Place<'tcx>)

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Move: The value (including old borrows of it) will not be used again.

Safe for values of all types (modulo future developments towards ?Move). Correct usage patterns are enforced by the borrow checker for safe code. Copy may be converted to Move to enable "last-use" optimizations.

Constant(Box<Constant<'tcx>>)

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Methods

impl<'tcx> Operand<'tcx>

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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impl<'tcx> Operand<'tcx>

pub fn function_handle<'a>(
    tcx: TyCtxt<'a, 'tcx, 'tcx>,
    def_id: DefId,
    substs: &'tcx Substs<'tcx>,
    span: Span
) -> Self

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pub fn to_copy(&self) -> Self

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Trait Implementations

impl<'gcx> HashStable<StableHashingContext<'gcx>> for Operand<'gcx>

fn hash_stable<W: StableHasherResult>(
    &self,
    hcx: &mut StableHashingContext<'gcx>,
    hasher: &mut StableHasher<W>
)

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impl<'tcx> Clone for Operand<'tcx>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> PartialEq for Operand<'tcx>

fn eq(&self, __arg_0: &Operand<'tcx>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &Operand<'tcx>) -> bool

This method tests for !=.

impl<'tcx> Encodable for Operand<'tcx>

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

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impl<'tcx> Decodable for Operand<'tcx>

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

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impl<'tcx> Debug for Operand<'tcx>

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

Formats the value using the given formatter.

impl<'tcx> TypeFoldable<'tcx> for Operand<'tcx>

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

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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

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

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fn has_escaping_regions(&self) -> bool

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

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fn has_projections(&self) -> bool

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fn references_error(&self) -> bool

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fn has_param_types(&self) -> bool

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fn has_self_ty(&self) -> bool

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fn has_infer_types(&self) -> bool

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fn needs_infer(&self) -> bool

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fn needs_subst(&self) -> bool

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fn has_re_skol(&self) -> bool

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fn has_closure_types(&self) -> bool

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fn has_erasable_regions(&self) -> bool

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fn is_normalized_for_trans(&self) -> bool

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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.