Struct rustc_borrowck::borrow_set::GatherBorrows
source · struct GatherBorrows<'a, 'tcx> {
tcx: TyCtxt<'tcx>,
body: &'a Body<'tcx>,
location_map: FxIndexMap<Location, BorrowData<'tcx>>,
activation_map: FxHashMap<Location, Vec<BorrowIndex>>,
local_map: FxHashMap<Local, FxHashSet<BorrowIndex>>,
pending_activations: FxHashMap<Local, BorrowIndex>,
locals_state_at_exit: LocalsStateAtExit,
}
Fields
tcx: TyCtxt<'tcx>
body: &'a Body<'tcx>
location_map: FxIndexMap<Location, BorrowData<'tcx>>
activation_map: FxHashMap<Location, Vec<BorrowIndex>>
local_map: FxHashMap<Local, FxHashSet<BorrowIndex>>
pending_activations: FxHashMap<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
sourceimpl<'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
sourceimpl<'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, coverage: &Coverage, 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,
local: Local,
proj_base: &[ProjectionElem<Local, Ty<'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,
_local: Local,
_proj_base: &[ProjectionElem<Local, Ty<'tcx>>],
elem: ProjectionElem<Local, Ty<'tcx>>,
_context: PlaceContext,
location: Location
)
fn visit_constant(&mut self, constant: &Constant<'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_substs(&mut self, substs: &&'tcx List<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, _coverage: &Coverage, _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_constant(&mut self, constant: &Constant<'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_substs(&mut self, _substs: &&'tcx List<GenericArg<'tcx>>)
fn visit_location(&mut self, body: &Body<'tcx>, location: Location)
Auto Trait Implementations
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>where
'tcx: 'a,
impl<'a, 'tcx> !UnwindSafe for GatherBorrows<'a, 'tcx>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
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: 200 bytes