Struct rustc_mir_build::build::matches::Candidate

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struct Candidate<'pat, 'tcx> {
    match_pairs: Vec<MatchPair<'pat, 'tcx>>,
    subcandidates: Vec<Candidate<'pat, 'tcx>>,
    has_guard: bool,
    otherwise_block: Option<BasicBlock>,
    extra_data: PatternExtraData<'tcx>,
    or_span: Option<Span>,
    pre_binding_block: Option<BasicBlock>,
    false_edge_start_block: Option<BasicBlock>,
    next_candidate_start_block: Option<BasicBlock>,
}

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§match_pairs: Vec<MatchPair<'pat, 'tcx>>

For the candidate to match, all of these must be satisfied…

§subcandidates: Vec<Candidate<'pat, 'tcx>>

…and if this is non-empty, one of these subcandidates also has to match…

§has_guard: bool

…and the guard must be evaluated if there is one.

§otherwise_block: Option<BasicBlock>

If the guard is false then branch to otherwise_block.

§extra_data: PatternExtraData<'tcx>

If the candidate matches, bindings and ascriptions must be established.

§or_span: Option<Span>

If we filled self.subcandidate, we store here the span of the or-pattern they came from.

§pre_binding_block: Option<BasicBlock>

The block before the bindings have been established.

§false_edge_start_block: Option<BasicBlock>

The earliest block that has only candidates >= this one as descendents. Used for false edges, see the doc for Builder::match_expr.

§next_candidate_start_block: Option<BasicBlock>

The false_edge_start_block of the next candidate.

Implementations§

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impl<'tcx, 'pat> Candidate<'pat, 'tcx>

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fn new( place: PlaceBuilder<'tcx>, pattern: &'pat Pat<'tcx>, has_guard: bool, cx: &mut Builder<'_, 'tcx> ) -> Self

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fn from_flat_pat(flat_pat: FlatPat<'pat, 'tcx>, has_guard: bool) -> Self

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fn visit_leaves<'a>(&'a mut self, visit_leaf: impl FnMut(&'a mut Self))

Visit the leaf candidates (those with no subcandidates) contained in this candidate.

Trait Implementations§

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impl<'pat, 'tcx> Debug for Candidate<'pat, 'tcx>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'pat, 'tcx> DynSend for Candidate<'pat, 'tcx>

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impl<'pat, 'tcx> DynSync for Candidate<'pat, 'tcx>

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impl<'pat, 'tcx> Freeze for Candidate<'pat, 'tcx>

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impl<'pat, 'tcx> !RefUnwindSafe for Candidate<'pat, 'tcx>

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impl<'pat, 'tcx> Send for Candidate<'pat, 'tcx>

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impl<'pat, 'tcx> Sync for Candidate<'pat, 'tcx>

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impl<'pat, 'tcx> Unpin for Candidate<'pat, 'tcx>

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impl<'pat, 'tcx> !UnwindSafe for Candidate<'pat, 'tcx>

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T, R> CollectAndApply<T, R> for T

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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impl<T> Filterable for T

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fn filterable( self, filter_name: &'static str ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

Creates a filterable data provider with the given name for debugging. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<P> IntoQueryParam<P> for P

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impl<T> MaybeResult<T> for T

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type Error = !

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fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<'tcx, T> ToPredicate<'tcx, T> for T

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fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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type Error = <U as TryFrom<T>>::Error

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Performs the conversion.
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fn vzip(self) -> V

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impl<Tcx, T> Value<Tcx> for T
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default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed ) -> T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
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impl<'a, T> Captures<'a> for T
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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: 136 bytes