Struct rustc_const_eval::interpret::operand::OpTy

pub struct OpTy<'tcx, Tag: Provenance = AllocId> {
    op: Operand<Tag>,
    pub layout: TyAndLayout<'tcx>,
    pub align: Option<Align>,
}

Fields

op: Operand<Tag>

layout: TyAndLayout<'tcx>

align: Option<Align>

rustc does not have a proper way to represent the type of a field of a repr(packed) struct: it needs to have a different alignment than the field type would usually have. So we represent this here with a separate field that “overwrites” layout.align. This means layout.align should never be used for an OpTy! None means “alignment does not matter since this is a by-value operand” (Operand::Immediate); this field is only relevant for Operand::Indirect. Also CTFE ignores alignment anyway, so this is for Miri only.

Implementations

impl<'tcx, Tag: Provenance> OpTy<'tcx, Tag>

pub fn try_as_mplace(&self) -> Result<MPlaceTy<'tcx, Tag>, ImmTy<'tcx, Tag>>

Note: do not call as_ref on the resulting place. This function should only be used to read from the resulting mplace, not to get its address back.

pub fn assert_mem_place(&self) -> MPlaceTy<'tcx, Tag>

Note: do not call as_ref on the resulting place. This function should only be used to read from the resulting mplace, not to get its address back.

Trait Implementations

impl<'tcx, Tag: Clone + Provenance> Clone for OpTy<'tcx, Tag>

fn clone(&self) -> OpTy<'tcx, Tag>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx, Tag: Debug + Provenance> Debug for OpTy<'tcx, Tag>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'tcx, Tag: Provenance> Deref for OpTy<'tcx, Tag>

type Target = Operand<Tag>

The resulting type after dereferencing.

fn deref(&self) -> &Operand<Tag>

Dereferences the value.

impl<'tcx, Tag: Provenance> From<&MPlaceTy<'tcx, Tag>> for OpTy<'tcx, Tag>

fn from(mplace: &MPlaceTy<'tcx, Tag>) -> Self

Converts to this type from the input type.

impl<'tcx, Tag: Provenance> From<&mut MPlaceTy<'tcx, Tag>> for OpTy<'tcx, Tag>

fn from(mplace: &mut MPlaceTy<'tcx, Tag>) -> Self

Converts to this type from the input type.

impl<'tcx, Tag: Provenance> From<ImmTy<'tcx, Tag>> for OpTy<'tcx, Tag>

fn from(val: ImmTy<'tcx, Tag>) -> Self

Converts to this type from the input type.

impl<'tcx, Tag: Provenance> From<MPlaceTy<'tcx, Tag>> for OpTy<'tcx, Tag>

fn from(mplace: MPlaceTy<'tcx, Tag>) -> Self

Converts to this type from the input type.

impl<'tcx, Tag: Hash + Provenance> Hash for OpTy<'tcx, Tag>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<'tcx, Tag: PartialEq + Provenance> PartialEq<OpTy<'tcx, Tag>> for OpTy<'tcx, Tag>

fn eq(&self, other: &OpTy<'tcx, Tag>) -> bool

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

fn ne(&self, other: &OpTy<'tcx, Tag>) -> bool

This method tests for !=.

impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> Value<'mir, 'tcx, M> for OpTy<'tcx, M::PointerTag>

fn layout(&self) -> TyAndLayout<'tcx>

Gets this value’s layout.

fn to_op(
    &self,
    _ecx: &InterpCx<'mir, 'tcx, M>
) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>>

Makes this into an OpTy.

fn from_mem_place(mplace: MPlaceTy<'tcx, M::PointerTag>) -> Self

Creates this from an MPlaceTy.

fn project_downcast(
    &self,
    ecx: &InterpCx<'mir, 'tcx, M>,
    variant: VariantIdx
) -> InterpResult<'tcx, Self>

Projects to the given enum variant.

fn project_field(
    &self,
    ecx: &InterpCx<'mir, 'tcx, M>,
    field: usize
) -> InterpResult<'tcx, Self>

Projects to the n-th field.

impl<'tcx, Tag: Copy + Provenance> Copy for OpTy<'tcx, Tag>

impl<'tcx, Tag: Eq + Provenance> Eq for OpTy<'tcx, Tag>

impl<'tcx, Tag: Provenance> StructuralEq for OpTy<'tcx, Tag>

impl<'tcx, Tag: Provenance> StructuralPartialEq for OpTy<'tcx, Tag>

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.