Struct clippy_utils::sugg::DerefDelegate
source · 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
Fields§
§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§
source§impl<'tcx> DerefDelegate<'_, 'tcx>
impl<'tcx> DerefDelegate<'_, 'tcx>
sourcepub fn finish(&mut self) -> String
pub fn finish(&mut self) -> String
build final suggestion:
- create the ending part of suggestion
- concatenate starting and ending parts
- potentially remove needless borrowing
sourcefn func_takes_arg_by_double_ref(
&self,
parent_expr: &'tcx Expr<'_>,
cmt_hir_id: HirId
) -> bool
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§
source§impl<'tcx> Delegate<'tcx> for DerefDelegate<'_, 'tcx>
impl<'tcx> Delegate<'tcx> for DerefDelegate<'_, 'tcx>
source§fn consume(&mut self, _: &PlaceWithHirId<'tcx>, _: HirId)
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 moresource§fn borrow(&mut self, cmt: &PlaceWithHirId<'tcx>, _: HirId, _: BorrowKind)
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).source§fn mutate(&mut self, _: &PlaceWithHirId<'tcx>, _: HirId)
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).source§fn fake_read(&mut self, _: &PlaceWithHirId<'tcx>, _: FakeReadCause, _: HirId)
fn fake_read(&mut self, _: &PlaceWithHirId<'tcx>, _: FakeReadCause, _: HirId)
The
place
should be a fake read because of specified cause
.source§fn copy(&mut self, place_with_id: &PlaceWithHirId<'tcx>, diag_expr_id: HirId)
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).Auto Trait Implementations§
impl<'a, 'tcx> !RefUnwindSafe for DerefDelegate<'a, 'tcx>
impl<'a, 'tcx> !Send for DerefDelegate<'a, 'tcx>
impl<'a, 'tcx> !Sync for DerefDelegate<'a, 'tcx>
impl<'a, 'tcx> Unpin for DerefDelegate<'a, 'tcx>
impl<'a, 'tcx> !UnwindSafe for DerefDelegate<'a, 'tcx>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
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