pub(crate) struct PatStack<'p, 'tcx> {
    pub(crate) pats: SmallVec<[&'p DeconstructedPat<'p, 'tcx>; 2]>,
}
Expand description

A row of a matrix. Rows of len 1 are very common, which is why SmallVec[_; 2] works well.

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§pats: SmallVec<[&'p DeconstructedPat<'p, 'tcx>; 2]>

Implementations§

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impl<'p, 'tcx> PatStack<'p, 'tcx>

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fn from_pattern(pat: &'p DeconstructedPat<'p, 'tcx>) -> Self

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fn from_vec(vec: SmallVec<[&'p DeconstructedPat<'p, 'tcx>; 2]>) -> Self

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fn is_empty(&self) -> bool

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fn len(&self) -> usize

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fn head(&self) -> &'p DeconstructedPat<'p, 'tcx>

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fn iter(&self) -> impl Iterator<Item = &DeconstructedPat<'p, 'tcx>>

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fn expand_or_pat<'a>( &'a self ) -> impl Iterator<Item = PatStack<'p, 'tcx>> + Captures<'a>

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fn expand_and_extend<'a>(&'a self, matrix: &mut Matrix<'p, 'tcx>)

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fn pop_head_constructor( &self, pcx: &PatCtxt<'_, 'p, 'tcx>, ctor: &Constructor<'tcx> ) -> PatStack<'p, 'tcx>

This computes S(self.head().ctor(), self). See top of the file for explanations.

Structure patterns with a partial wild pattern (Foo { a: 42, .. }) have their missing fields filled with wild patterns.

This is roughly the inverse of Constructor::apply.

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impl<'p, 'tcx> Clone for PatStack<'p, 'tcx>

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fn clone(&self) -> PatStack<'p, 'tcx>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'p, 'tcx> Debug for PatStack<'p, 'tcx>

Pretty-printing for matrix row.

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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<'p, 'tcx> !RefUnwindSafe for PatStack<'p, 'tcx>

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impl<'p, 'tcx> !Send for PatStack<'p, 'tcx>

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impl<'p, 'tcx> !Sync for PatStack<'p, 'tcx>

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impl<'p, 'tcx> Unpin for PatStack<'p, 'tcx>

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impl<'p, 'tcx> !UnwindSafe for PatStack<'p, 'tcx>

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere 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<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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: 24 bytes