struct GatherBorrows<'a, 'tcx> {
tcx: TyCtxt<'tcx>,
body: &'a Body<'tcx>,
location_map: FxIndexMap<Location, BorrowData<'tcx>>,
activation_map: FxIndexMap<Location, Vec<BorrowIndex>>,
local_map: FxIndexMap<Local, FxIndexSet<BorrowIndex>>,
pending_activations: FxIndexMap<Local, BorrowIndex>,
locals_state_at_exit: LocalsStateAtExit,
}
Fields§
§tcx: TyCtxt<'tcx>
§body: &'a Body<'tcx>
§location_map: FxIndexMap<Location, BorrowData<'tcx>>
§activation_map: FxIndexMap<Location, Vec<BorrowIndex>>
§local_map: FxIndexMap<Local, FxIndexSet<BorrowIndex>>
§pending_activations: FxIndexMap<Local, BorrowIndex>
When we encounter a 2-phase borrow statement, it will always be assigning into a temporary TEMP:
TEMP = &foo
We add TEMP into this map with b
, where b
is the index of
the borrow. When we find a later use of this activation, we
remove from the map (and add to the “tombstone” set below).
locals_state_at_exit: LocalsStateAtExit
Implementations§
Source§impl<'a, 'tcx> GatherBorrows<'a, 'tcx>
impl<'a, 'tcx> GatherBorrows<'a, 'tcx>
Sourcefn insert_as_pending_if_two_phase(
&mut self,
start_location: Location,
assigned_place: &Place<'tcx>,
kind: BorrowKind,
borrow_index: BorrowIndex,
)
fn insert_as_pending_if_two_phase( &mut self, start_location: Location, assigned_place: &Place<'tcx>, kind: BorrowKind, borrow_index: BorrowIndex, )
If this is a two-phase borrow, then we will record it as “pending” until we find the activating use.
Trait Implementations§
Source§impl<'a, 'tcx> Visitor<'tcx> for GatherBorrows<'a, 'tcx>
impl<'a, 'tcx> Visitor<'tcx> for GatherBorrows<'a, 'tcx>
fn visit_assign( &mut self, assigned_place: &Place<'tcx>, rvalue: &Rvalue<'tcx>, location: Location, )
fn visit_local( &mut self, temp: Local, context: PlaceContext, location: Location, )
fn visit_rvalue(&mut self, rvalue: &Rvalue<'tcx>, location: Location)
fn visit_body(&mut self, body: &Body<'tcx>)
fn visit_basic_block_data( &mut self, block: BasicBlock, data: &BasicBlockData<'tcx>, )
fn visit_source_scope_data(&mut self, scope_data: &SourceScopeData<'tcx>)
fn visit_statement(&mut self, statement: &Statement<'tcx>, location: Location)
fn visit_terminator( &mut self, terminator: &Terminator<'tcx>, location: Location, )
fn visit_assert_message( &mut self, msg: &AssertKind<Operand<'tcx>>, location: Location, )
fn visit_operand(&mut self, operand: &Operand<'tcx>, location: Location)
fn visit_ascribe_user_ty( &mut self, place: &Place<'tcx>, variance: Variance, user_ty: &UserTypeProjection, location: Location, )
fn visit_coverage(&mut self, kind: &CoverageKind, location: Location)
fn visit_retag( &mut self, kind: RetagKind, place: &Place<'tcx>, location: Location, )
fn visit_place( &mut self, place: &Place<'tcx>, context: PlaceContext, location: Location, )
fn visit_projection( &mut self, place_ref: PlaceRef<'tcx>, context: PlaceContext, location: Location, )
fn visit_projection_elem( &mut self, place_ref: PlaceRef<'tcx>, elem: ProjectionElem<Local, Ty<'tcx>>, context: PlaceContext, location: Location, )
fn super_place( &mut self, place: &Place<'tcx>, context: PlaceContext, location: Location, )
fn super_projection( &mut self, place_ref: PlaceRef<'tcx>, context: PlaceContext, location: Location, )
fn super_projection_elem( &mut self, _place_ref: PlaceRef<'tcx>, elem: ProjectionElem<Local, Ty<'tcx>>, _context: PlaceContext, location: Location, )
Source§fn visit_const_operand(
&mut self,
constant: &ConstOperand<'tcx>,
location: Location,
)
fn visit_const_operand( &mut self, constant: &ConstOperand<'tcx>, location: Location, )
This is called for every constant in the MIR body and every
required_consts
(i.e., including consts that have been dead-code-eliminated).fn visit_ty_const(&mut self, ct: Const<'tcx>, location: Location)
fn visit_span(&mut self, span: Span)
fn visit_source_info(&mut self, source_info: &SourceInfo)
fn visit_ty(&mut self, ty: Ty<'tcx>, _: TyContext)
fn visit_user_type_projection(&mut self, ty: &UserTypeProjection)
fn visit_user_type_annotation( &mut self, index: UserTypeAnnotationIndex, ty: &CanonicalUserTypeAnnotation<'tcx>, )
fn visit_region(&mut self, region: Region<'tcx>, _: Location)
fn visit_args( &mut self, args: &&'tcx RawList<(), GenericArg<'tcx>>, _: Location, )
fn visit_local_decl(&mut self, local: Local, local_decl: &LocalDecl<'tcx>)
fn visit_var_debug_info(&mut self, var_debug_info: &VarDebugInfo<'tcx>)
fn visit_source_scope(&mut self, scope: SourceScope)
fn super_body(&mut self, body: &Body<'tcx>)
fn super_basic_block_data( &mut self, block: BasicBlock, data: &BasicBlockData<'tcx>, )
fn super_source_scope_data(&mut self, scope_data: &SourceScopeData<'tcx>)
fn super_statement(&mut self, statement: &Statement<'tcx>, location: Location)
fn super_assign( &mut self, place: &Place<'tcx>, rvalue: &Rvalue<'tcx>, location: Location, )
fn super_terminator( &mut self, terminator: &Terminator<'tcx>, location: Location, )
fn super_assert_message( &mut self, msg: &AssertKind<Operand<'tcx>>, location: Location, )
fn super_rvalue(&mut self, rvalue: &Rvalue<'tcx>, location: Location)
fn super_operand(&mut self, operand: &Operand<'tcx>, location: Location)
fn super_ascribe_user_ty( &mut self, place: &Place<'tcx>, variance: Variance, user_ty: &UserTypeProjection, location: Location, )
fn super_coverage(&mut self, _kind: &CoverageKind, _location: Location)
fn super_retag( &mut self, _kind: RetagKind, place: &Place<'tcx>, location: Location, )
fn super_local_decl(&mut self, local: Local, local_decl: &LocalDecl<'tcx>)
fn super_var_debug_info(&mut self, var_debug_info: &VarDebugInfo<'tcx>)
fn super_source_scope(&mut self, _scope: SourceScope)
fn super_const_operand( &mut self, constant: &ConstOperand<'tcx>, location: Location, )
fn super_ty_const(&mut self, _ct: Const<'tcx>, _location: Location)
fn super_span(&mut self, _span: Span)
fn super_source_info(&mut self, source_info: &SourceInfo)
fn super_user_type_projection(&mut self, _ty: &UserTypeProjection)
fn super_user_type_annotation( &mut self, _index: UserTypeAnnotationIndex, ty: &CanonicalUserTypeAnnotation<'tcx>, )
fn super_ty(&mut self, _ty: Ty<'tcx>)
fn super_region(&mut self, _region: Region<'tcx>)
fn super_args(&mut self, _args: &&'tcx RawList<(), GenericArg<'tcx>>)
fn visit_location(&mut self, body: &Body<'tcx>, location: Location)
Auto Trait Implementations§
impl<'a, 'tcx> DynSend for GatherBorrows<'a, 'tcx>
impl<'a, 'tcx> DynSync for GatherBorrows<'a, 'tcx>
impl<'a, 'tcx> Freeze for GatherBorrows<'a, 'tcx>
impl<'a, 'tcx> !RefUnwindSafe for GatherBorrows<'a, 'tcx>
impl<'a, 'tcx> !Send for GatherBorrows<'a, 'tcx>
impl<'a, 'tcx> !Sync for GatherBorrows<'a, 'tcx>
impl<'a, 'tcx> Unpin for GatherBorrows<'a, 'tcx>
impl<'a, 'tcx> !UnwindSafe for GatherBorrows<'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
§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
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impl<T> Filterable for T
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self,
filter_name: &'static str,
) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
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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Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
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otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
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into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
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§impl<I, T> UpcastFrom<I, T> for T
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§impl<Tcx, T> Value<Tcx> for Twhere
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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: 280 bytes