Struct rustc_middle::mir::VarBindingForm

pub struct VarBindingForm<'tcx> {
    pub binding_mode: BindingMode,
    pub opt_ty_info: Option<Span>,
    pub opt_match_place: Option<(Option<Place<'tcx>>, Span)>,
    pub pat_span: Span,
}

Fields

binding_mode: BindingMode

Is variable bound via x, mut x, ref x, or ref mut x?

opt_ty_info: Option<Span>

If an explicit type was provided for this variable binding, this holds the source Span of that type.

NOTE: if you want to change this to a HirId, be wary that doing so breaks incremental compilation (as of this writing), while a Span does not cause our tests to fail.

opt_match_place: Option<(Option<Place<'tcx>>, Span)>

Place of the RHS of the =, or the subject of the match where this variable is initialized. None in the case of let PATTERN;. Some((None, ..)) in the case of and let [mut] x = ... because (a) the right-hand side isn’t evaluated as a place expression. (b) it gives a way to separate this case from the remaining cases for diagnostics.

pat_span: Span

The span of the pattern in which this variable was bound.

Trait Implementations

impl<'tcx> Clone for VarBindingForm<'tcx>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for VarBindingForm<'tcx>

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

Formats the value using the given formatter.

impl<'tcx, __D: TyDecoder<'tcx>> Decodable<__D> for VarBindingForm<'tcx>

fn decode(__decoder: &mut __D) -> Result<Self, <__D as Decoder>::Error>

impl<'tcx, __E: TyEncoder<'tcx>> Encodable<__E> for VarBindingForm<'tcx>

fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>

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

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