Enum rustc_middle::mir::VarDebugInfoContents

pub enum VarDebugInfoContents<'tcx> {
    Place(Place<'tcx>),
    Const(Constant<'tcx>),
    Composite {
        ty: Ty<'tcx>,
        fragments: Vec<VarDebugInfoFragment<'tcx>>,
    },
}

Variants

Place(Place<'tcx>)

NOTE(eddyb) There’s an unenforced invariant that this Place is based on a Local, not a Static, and contains no indexing.

Const(Constant<'tcx>)

Composite

Fields

ty: Ty<'tcx>

Type of the original user variable.

fragments: Vec<VarDebugInfoFragment<'tcx>>

All the parts of the original user variable, which ended up in disjoint places, due to optimizations.

The user variable’s data is split across several fragments, each described by a VarDebugInfoFragment. See DWARF 5’s “2.6.1.2 Composite Location Descriptions” and LLVM’s DW_OP_LLVM_fragment for more details on the underlying debuginfo feature this relies on.

Trait Implementations

impl<'tcx> Clone for VarDebugInfoContents<'tcx>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for VarDebugInfoContents<'tcx>

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

Formats the value using the given formatter.

impl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for VarDebugInfoContents<'tcx>

fn decode(__decoder: &mut __D) -> Self

impl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for VarDebugInfoContents<'tcx>

fn encode(&self, __encoder: &mut __E)

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for VarDebugInfoContents<'tcx>

fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher )

impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for VarDebugInfoContents<'tcx>

fn try_fold_with<__F: FallibleTypeFolder<TyCtxt<'tcx>>>( self, __folder: &mut __F ) -> Result<Self, __F::Error>

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f).

fn fold_with<F>(self, folder: &mut F) -> Selfwhere F: TypeFolder<I>,

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.

impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for VarDebugInfoContents<'tcx>

fn visit_with<__V: TypeVisitor<TyCtxt<'tcx>>>( &self, __visitor: &mut __V ) -> ControlFlow<__V::BreakTy>

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v).

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 64 bytes

Size for each variant:

• Place: 24 bytes
• Const: 64 bytes
• Composite: 40 bytes