# Struct clippy_utils::SpanlessHash

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    pub struct SpanlessHash<'a, 'tcx> {
        cx: &'a LateContext<'tcx>,
        maybe_typeck_results: Option<&'tcx TypeckResults<'tcx>>,
        s: FxHasher,
    }

Expand description

Type used to hash an ast element. This is different from the `Hash` trait on ast types as this trait would consider IDs and spans.

All expressions kind are hashed, but some might have a weaker hash.

## Fields§

§`cx: &'a LateContext<'tcx>`

Context used to evaluate constant expressions.

§`maybe_typeck_results: Option<&'tcx TypeckResults<'tcx>>`§`s: FxHasher`

## Implementations§

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### impl<'a, 'tcx> SpanlessHash<'a, 'tcx>

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#### pub fn new(cx: &'a LateContext<'tcx>) -> Self

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#### pub fn finish(self) -> u64

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#### pub fn hash_block(&mut self, b: &Block<'_>)

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#### pub fn hash_expr(&mut self, e: &Expr<'_>)

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#### pub fn hash_exprs(&mut self, e: &[Expr<'_>])

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#### pub fn hash_name(&mut self, n: Symbol)

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#### pub fn hash_qpath(&mut self, p: &QPath<'_>)

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#### pub fn hash_pat(&mut self, pat: &Pat<'_>)

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#### pub fn hash_path(&mut self, path: &Path<'_>)

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#### pub fn hash_stmt(&mut self, b: &Stmt<'_>)

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#### pub fn hash_lifetime(&mut self, lifetime: &Lifetime)

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#### pub fn hash_ty(&mut self, ty: &Ty<'_>)

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#### pub fn hash_tykind(&mut self, ty: &TyKind<'_>)

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#### pub fn hash_array_length(&mut self, length: ArrayLen<'_>)

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#### pub fn hash_body(&mut self, body_id: BodyId)

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#### fn hash_generic_args(&mut self, arg_list: &[GenericArg<'_>])

## Auto Trait Implementations§

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### impl<'a, 'tcx> Freeze for SpanlessHash<'a, 'tcx>

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### impl<'a, 'tcx> !RefUnwindSafe for SpanlessHash<'a, 'tcx>

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### impl<'a, 'tcx> !Send for SpanlessHash<'a, 'tcx>

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### impl<'a, 'tcx> !Sync for SpanlessHash<'a, 'tcx>

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### impl<'a, 'tcx> Unpin for SpanlessHash<'a, 'tcx>

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### impl<'a, 'tcx> !UnwindSafe for SpanlessHash<'a, 'tcx>

## Blanket Implementations§

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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> 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 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<T> IntoEither for T

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#### fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left` is `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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#### fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left(&self)` returns `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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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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#### 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 T
where 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