Struct clippy_utils::sugg::DerefDelegate

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struct DerefDelegate<'a, 'tcx> {
    cx: &'a LateContext<'tcx>,
    closure_span: Span,
    closure_arg_is_type_annotated_double_ref: bool,
    next_pos: BytePos,
    suggestion_start: String,
    applicability: Applicability,
}
Expand description

Visitor struct used for tracking down dereferencing and borrowing of closure’s args

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§cx: &'a LateContext<'tcx>

The late context of the lint

§closure_span: Span

The span of the input closure to adapt

§closure_arg_is_type_annotated_double_ref: bool

Indicates if the arg of the closure is a type annotated double reference

§next_pos: BytePos

last position of the span to gradually build the suggestion

§suggestion_start: String

starting part of the gradually built suggestion

§applicability: Applicability

confidence on the built suggestion

Implementations§

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impl<'tcx> DerefDelegate<'_, 'tcx>

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pub fn finish(&mut self) -> String

build final suggestion:

  • create the ending part of suggestion
  • concatenate starting and ending parts
  • potentially remove needless borrowing
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fn func_takes_arg_by_double_ref( &self, parent_expr: &'tcx Expr<'_>, cmt_hir_id: HirId, ) -> bool

indicates whether the function from parent_expr takes its args by double reference

Trait Implementations§

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impl<'tcx> Delegate<'tcx> for DerefDelegate<'_, 'tcx>

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fn consume(&mut self, _: &PlaceWithHirId<'tcx>, _: HirId)

The value found at place is moved, depending on mode. Where diag_expr_id is the id used for diagnostics for place. Read more
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fn borrow(&mut self, cmt: &PlaceWithHirId<'tcx>, _: HirId, _: BorrowKind)

The value found at place is being borrowed with kind bk. diag_expr_id is the id used for diagnostics (see consume for more details).
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fn mutate(&mut self, _: &PlaceWithHirId<'tcx>, _: HirId)

The path at assignee_place is being assigned to. diag_expr_id is the id used for diagnostics (see consume for more details).
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fn fake_read(&mut self, _: &PlaceWithHirId<'tcx>, _: FakeReadCause, _: HirId)

The place should be a fake read because of specified cause.
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fn copy(&mut self, place_with_id: &PlaceWithHirId<'tcx>, diag_expr_id: HirId)

The value found at place is being copied. diag_expr_id is the id used for diagnostics (see consume for more details).
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fn bind(&mut self, binding_place: &PlaceWithHirId<'tcx>, diag_expr_id: HirId)

The path at binding_place is a binding that is being initialized. Read more

Auto Trait Implementations§

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impl<'a, 'tcx> Freeze for DerefDelegate<'a, 'tcx>

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impl<'a, 'tcx> !RefUnwindSafe for DerefDelegate<'a, 'tcx>

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impl<'a, 'tcx> !Send for DerefDelegate<'a, 'tcx>

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impl<'a, 'tcx> !Sync for DerefDelegate<'a, 'tcx>

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impl<'a, 'tcx> Unpin for DerefDelegate<'a, 'tcx>

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impl<'a, 'tcx> !UnwindSafe for DerefDelegate<'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: 48 bytes