Struct MPlaceTy

pub struct MPlaceTy<'tcx, Prov: Provenance = CtfeProvenance> {
    mplace: MemPlace<Prov>,
    pub layout: TyAndLayout<'tcx>,
}

A MemPlace with its layout. Constructing it is only possible in this module.

Fields

mplace: MemPlace<Prov>

layout: TyAndLayout<'tcx>

Implementations

impl<'tcx, Prov: Provenance> MPlaceTy<'tcx, Prov>

pub fn fake_alloc_zst(layout: TyAndLayout<'tcx>) -> Self

Produces a MemPlace that works for ZST but nothing else. Conceptually this is a new allocation, but it doesn’t actually create an allocation so you don’t need to worry about memory leaks.

pub fn map_provenance(self, f: impl FnOnce(Prov) -> Prov) -> Self

Adjust the provenance of the main pointer (metadata is unaffected).

pub(super) fn mplace(&self) -> &MemPlace<Prov>

pub fn ptr(&self) -> Pointer<Option<Prov>>

pub fn to_ref(&self, cx: &impl HasDataLayout) -> Immediate<Prov>

Trait Implementations

impl<'tcx, Prov: Clone + Provenance> Clone for MPlaceTy<'tcx, Prov>

fn clone(&self) -> MPlaceTy<'tcx, Prov>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<Prov: Provenance> Debug for MPlaceTy<'_, Prov>

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

Formats the value using the given formatter.

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

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

Converts to this type from the input type.

impl<'tcx, Prov: Provenance> From<MPlaceTy<'tcx, Prov>> for PlaceTy<'tcx, Prov>

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

Converts to this type from the input type.

impl<'tcx, Prov: Hash + Provenance> Hash for MPlaceTy<'tcx, Prov>

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'tcx, Prov: PartialEq + Provenance> PartialEq for MPlaceTy<'tcx, Prov>

fn eq(&self, other: &MPlaceTy<'tcx, Prov>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'tcx, Prov: Provenance> Projectable<'tcx, Prov> for MPlaceTy<'tcx, Prov>

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

Get the layout.

fn meta(&self) -> MemPlaceMeta<Prov>

Get the metadata of a wide value.

fn offset_with_meta<M: Machine<'tcx, Provenance = Prov>>( &self, offset: Size, mode: OffsetMode, meta: MemPlaceMeta<Prov>, layout: TyAndLayout<'tcx>, ecx: &InterpCx<'tcx, M>, ) -> InterpResult<'tcx, Self>

Offset the value by the given amount, replacing the layout and metadata.

fn to_op<M: Machine<'tcx, Provenance = Prov>>( &self, _ecx: &InterpCx<'tcx, M>, ) -> InterpResult<'tcx, OpTy<'tcx, M::Provenance>>

Convert this to an OpTy. This might be an irreversible transformation, but is useful for reading from this thing.

fn len<M: Machine<'tcx, Provenance = Prov>>( &self, ecx: &InterpCx<'tcx, M>, ) -> InterpResult<'tcx, u64>

Get the length of a slice/string/array stored here.

fn offset<M: Machine<'tcx, Provenance = Prov>>( &self, offset: Size, layout: TyAndLayout<'tcx>, ecx: &InterpCx<'tcx, M>, ) -> InterpResult<'tcx, Self>

fn transmute<M: Machine<'tcx, Provenance = Prov>>( &self, layout: TyAndLayout<'tcx>, ecx: &InterpCx<'tcx, M>, ) -> InterpResult<'tcx, Self>

This does an offset-by-zero, which is effectively a transmute. Note however that not all transmutes are supported by all projectables – specifically, if this is an OpTy or ImmTy, the new layout must have almost the same ABI as the old one (only changing the valid_range is allowed and turning integers into pointers).

impl<'tcx, Prov: Provenance> Writeable<'tcx, Prov> for MPlaceTy<'tcx, Prov>

fn to_place(&self) -> PlaceTy<'tcx, Prov>

fn force_mplace<M: Machine<'tcx, Provenance = Prov>>( &self, _ecx: &mut InterpCx<'tcx, M>, ) -> InterpResult<'tcx, MPlaceTy<'tcx, Prov>>

impl<'tcx, Prov: Eq + Provenance> Eq for MPlaceTy<'tcx, Prov>

impl<'tcx, Prov: Provenance> StructuralPartialEq for MPlaceTy<'tcx, Prov>

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.