Struct rustc::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,
}

🔬 This is a nightly-only experimental API. (rustc_private)

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Fields

binding_mode: BindingMode

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

opt_ty_info: Option<Span>

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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)>

🔬 This is a nightly-only experimental API. (rustc_private)

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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

🔬 This is a nightly-only experimental API. (rustc_private)

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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.

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

Performs copy-assignment from source.

impl<'tcx> PartialEq for VarBindingForm<'tcx>

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

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

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

This method tests for !=.

impl<'tcx> Eq for VarBindingForm<'tcx>

fn assert_receiver_is_total_eq(&self)

impl<'tcx> Hash for VarBindingForm<'tcx>

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> Debug for VarBindingForm<'tcx>

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

Formats the value using the given formatter.

impl<'tcx> Encodable for VarBindingForm<'tcx>

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

🔬 This is a nightly-only experimental API. (rustc_private)

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impl<'tcx> Decodable for VarBindingForm<'tcx>

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

🔬 This is a nightly-only experimental API. (rustc_private)

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

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

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?