Enum rustc::hir::MatchSource

pub enum MatchSource {
    Normal,
    IfLetDesugar {
        contains_else_clause: bool,
    },
    WhileLetDesugar,
    ForLoopDesugar,
    TryDesugar,
}

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Hints at the original code for a match _ { .. }

Variants

Normal

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A match _ { .. }

IfLetDesugar

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An if let _ = _ { .. } (optionally with else { .. })

Fields of IfLetDesugar

contains_else_clause: bool

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WhileLetDesugar

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A while let _ = _ { .. } (which was desugared to a loop { match _ { .. } })

ForLoopDesugar

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A desugared for _ in _ { .. } loop

TryDesugar

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A desugared ? operator

Trait Implementations

impl Clone for MatchSource

fn clone(&self) -> MatchSource

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq for MatchSource

fn eq(&self, other: &MatchSource) -> bool

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

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

This method tests for !=.

impl Eq for MatchSource

fn assert_receiver_is_total_eq(&self)

impl Encodable for MatchSource

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

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impl Decodable for MatchSource

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

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impl Hash for MatchSource

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 Debug for MatchSource

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

Formats the value using the given formatter.

impl Copy for MatchSource

impl<'a> HashStable<StableHashingContext<'a>> for MatchSource

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

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impl<'tcx> TypeFoldable<'tcx> for MatchSource

fn super_fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(     &self,     _: &mut F ) -> MatchSource

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fn super_visit_with<F: TypeVisitor<'tcx>>(&self, _: &mut F) -> bool

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fn fold_with<'gcx: 'tcx, F: TypeFolder<'gcx, 'tcx>>(     &self,     folder: &mut F ) -> Self

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fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

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fn has_regions_bound_at_or_above(&self, binder: DebruijnIndex) -> bool

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True if self has any late-bound regions that are either bound by binder or bound by some binder outside of binder. If binder is ty::INNERMOST, this indicates whether there are any late-bound regions that appear free.

fn has_regions_bound_above(&self, binder: DebruijnIndex) -> bool

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True if this self has any regions that escape binder (and hence are not bound by it).

fn has_escaping_regions(&self) -> bool

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fn has_type_flags(&self, flags: TypeFlags) -> bool

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fn has_projections(&self) -> bool

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fn references_error(&self) -> bool

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fn has_param_types(&self) -> bool

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fn has_self_ty(&self) -> bool

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fn has_infer_types(&self) -> bool

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fn needs_infer(&self) -> bool

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fn has_skol(&self) -> bool

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fn needs_subst(&self) -> bool

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fn has_re_skol(&self) -> bool

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fn has_closure_types(&self) -> bool

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fn has_free_regions(&self) -> bool

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"Free" regions in this context means that it has any region that is not (a) erased or (b) late-bound.

fn has_erasable_regions(&self) -> bool

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True if there any any un-erased free regions.

fn is_global(&self) -> bool

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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching.

fn has_late_bound_regions(&self) -> bool

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True if there are any late-bound regions

impl<'tcx> Lift<'tcx> for MatchSource

type Lifted = Self

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fn lift_to_tcx<'a, 'gcx>(&self, _: TyCtxt<'a, 'gcx, 'tcx>) -> Option<Self>

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