Struct rustc_borrowck::dataflow::Borrows
source · pub struct Borrows<'a, 'tcx> {
tcx: TyCtxt<'tcx>,
body: &'a Body<'tcx>,
borrow_set: &'a BorrowSet<'tcx>,
borrows_out_of_scope_at_location: FxHashMap<Location, Vec<BorrowIndex>>,
}
Expand description
Borrows
stores the data used in the analyses that track the flow
of borrows.
It uniquely identifies every borrow (Rvalue::Ref
) by a
BorrowIndex
, and maps each such index to a BorrowData
describing the borrow. These indexes are used for representing the
borrows in compact bitvectors.
Fields
tcx: TyCtxt<'tcx>
body: &'a Body<'tcx>
borrow_set: &'a BorrowSet<'tcx>
borrows_out_of_scope_at_location: FxHashMap<Location, Vec<BorrowIndex>>
Implementations
sourceimpl<'a, 'tcx> Borrows<'a, 'tcx>
impl<'a, 'tcx> Borrows<'a, 'tcx>
pub(crate) fn new(
tcx: TyCtxt<'tcx>,
body: &'a Body<'tcx>,
nonlexical_regioncx: &'a RegionInferenceContext<'tcx>,
borrow_set: &'a BorrowSet<'tcx>
) -> Self
pub fn location(&self, idx: BorrowIndex) -> &Location
sourcefn kill_loans_out_of_scope_at_location(
&self,
trans: &mut impl GenKill<BorrowIndex>,
location: Location
)
fn kill_loans_out_of_scope_at_location(
&self,
trans: &mut impl GenKill<BorrowIndex>,
location: Location
)
Add all borrows to the kill set, if those borrows are out of scope at location
.
That means they went out of a nonlexical scope
sourcefn kill_borrows_on_place(
&self,
trans: &mut impl GenKill<BorrowIndex>,
place: Place<'tcx>
)
fn kill_borrows_on_place(
&self,
trans: &mut impl GenKill<BorrowIndex>,
place: Place<'tcx>
)
Kill any borrows that conflict with place
.
Trait Implementations
sourceimpl<'tcx> AnalysisDomain<'tcx> for Borrows<'_, 'tcx>
impl<'tcx> AnalysisDomain<'tcx> for Borrows<'_, 'tcx>
type Domain = BitSet<BorrowIndex>
type Domain = BitSet<BorrowIndex>
The type that holds the dataflow state at any given point in the program.
sourceconst NAME: &'static str = "borrows"
const NAME: &'static str = "borrows"
A descriptive name for this analysis. Used only for debugging. Read more
sourcefn bottom_value(&self, _: &Body<'tcx>) -> Self::Domain
fn bottom_value(&self, _: &Body<'tcx>) -> Self::Domain
Returns the initial value of the dataflow state upon entry to each basic block.
sourcefn initialize_start_block(&self, _: &Body<'tcx>, _: &mut Self::Domain)
fn initialize_start_block(&self, _: &Body<'tcx>, _: &mut Self::Domain)
Mutates the initial value of the dataflow state upon entry to the
START_BLOCK
. Read moresourceimpl DebugWithContext<Borrows<'_, '_>> for BorrowIndex
impl DebugWithContext<Borrows<'_, '_>> for BorrowIndex
sourceimpl<'tcx> GenKillAnalysis<'tcx> for Borrows<'_, 'tcx>
impl<'tcx> GenKillAnalysis<'tcx> for Borrows<'_, 'tcx>
type Idx = BorrowIndex
sourcefn before_statement_effect(
&self,
trans: &mut impl GenKill<Self::Idx>,
_statement: &Statement<'tcx>,
location: Location
)
fn before_statement_effect(
&self,
trans: &mut impl GenKill<Self::Idx>,
_statement: &Statement<'tcx>,
location: Location
)
See
Analysis::apply_before_statement_effect
.sourcefn statement_effect(
&self,
trans: &mut impl GenKill<Self::Idx>,
stmt: &Statement<'tcx>,
location: Location
)
fn statement_effect(
&self,
trans: &mut impl GenKill<Self::Idx>,
stmt: &Statement<'tcx>,
location: Location
)
See
Analysis::apply_statement_effect
.sourcefn before_terminator_effect(
&self,
trans: &mut impl GenKill<Self::Idx>,
_terminator: &Terminator<'tcx>,
location: Location
)
fn before_terminator_effect(
&self,
trans: &mut impl GenKill<Self::Idx>,
_terminator: &Terminator<'tcx>,
location: Location
)
See
Analysis::apply_before_terminator_effect
.sourcefn terminator_effect(
&self,
trans: &mut impl GenKill<Self::Idx>,
terminator: &Terminator<'tcx>,
_location: Location
)
fn terminator_effect(
&self,
trans: &mut impl GenKill<Self::Idx>,
terminator: &Terminator<'tcx>,
_location: Location
)
See
Analysis::apply_terminator_effect
.sourcefn call_return_effect(
&self,
_trans: &mut impl GenKill<Self::Idx>,
_block: BasicBlock,
_return_places: CallReturnPlaces<'_, 'tcx>
)
fn call_return_effect(
&self,
_trans: &mut impl GenKill<Self::Idx>,
_block: BasicBlock,
_return_places: CallReturnPlaces<'_, 'tcx>
)
See
Analysis::apply_call_return_effect
.sourcefn yield_resume_effect(
&self,
_trans: &mut impl GenKill<Self::Idx>,
_resume_block: BasicBlock,
_resume_place: Place<'tcx>
)
fn yield_resume_effect(
&self,
_trans: &mut impl GenKill<Self::Idx>,
_resume_block: BasicBlock,
_resume_place: Place<'tcx>
)
See
Analysis::apply_yield_resume_effect
.sourcefn switch_int_edge_effects<G>(
&self,
_block: BasicBlock,
_discr: &Operand<'tcx>,
_edge_effects: &mut impl SwitchIntEdgeEffects<G>
)where
G: GenKill<Self::Idx>,
fn switch_int_edge_effects<G>(
&self,
_block: BasicBlock,
_discr: &Operand<'tcx>,
_edge_effects: &mut impl SwitchIntEdgeEffects<G>
)where
G: GenKill<Self::Idx>,
See
Analysis::apply_switch_int_edge_effects
.Auto Trait Implementations
impl<'a, 'tcx> !RefUnwindSafe for Borrows<'a, 'tcx>
impl<'a, 'tcx> !Send for Borrows<'a, 'tcx>
impl<'a, 'tcx> !Sync for Borrows<'a, 'tcx>
impl<'a, 'tcx> Unpin for Borrows<'a, 'tcx>where
'tcx: 'a,
impl<'a, 'tcx> !UnwindSafe for Borrows<'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: 56 bytes