Struct rustc_borrowck::borrowck::move_data::MoveData [−][src]
pub struct MoveData<'tcx> { pub paths: RefCell<Vec<MovePath<'tcx>>>, pub path_map: RefCell<FxHashMap<Rc<LoanPath<'tcx>>, MovePathIndex>>, pub moves: RefCell<Vec<Move>>, pub var_assignments: RefCell<Vec<Assignment>>, pub path_assignments: RefCell<Vec<Assignment>>, pub assignee_ids: RefCell<FxHashSet<ItemLocalId>>, }
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Fields
paths: RefCell<Vec<MovePath<'tcx>>>
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Move paths. See section "Move paths" in README.md
.
path_map: RefCell<FxHashMap<Rc<LoanPath<'tcx>>, MovePathIndex>>
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Cache of loan path to move path index, for easy lookup.
moves: RefCell<Vec<Move>>
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Each move or uninitialized variable gets an entry here.
var_assignments: RefCell<Vec<Assignment>>
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Assignments to a variable, like x = foo
. These are assigned
bits for dataflow, since we must track them to ensure that
immutable variables are assigned at most once along each path.
path_assignments: RefCell<Vec<Assignment>>
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Assignments to a path, like x.f = foo
. These are not
assigned dataflow bits, but we track them because they still
kill move bits.
assignee_ids: RefCell<FxHashSet<ItemLocalId>>
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Assignments to a variable or path, like x = foo
, but not x += foo
.
Methods
impl<'a, 'tcx> MoveData<'tcx>
[src]
impl<'a, 'tcx> MoveData<'tcx>
pub fn is_empty(&self) -> bool
[src]
pub fn is_empty(&self) -> bool
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return true if there are no trackable assignments or moves in this move data - that means that there is nothing that could cause a borrow error.
pub fn path_loan_path(&self, index: MovePathIndex) -> Rc<LoanPath<'tcx>>
[src]
pub fn path_loan_path(&self, index: MovePathIndex) -> Rc<LoanPath<'tcx>>
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fn path_parent(&self, index: MovePathIndex) -> MovePathIndex
[src]
fn path_parent(&self, index: MovePathIndex) -> MovePathIndex
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fn path_first_move(&self, index: MovePathIndex) -> MoveIndex
[src]
fn path_first_move(&self, index: MovePathIndex) -> MoveIndex
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fn path_first_child(&self, index: MovePathIndex) -> MovePathIndex
[src]
fn path_first_child(&self, index: MovePathIndex) -> MovePathIndex
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Returns the index of first child, or InvalidMovePathIndex
if
index
is leaf.
fn path_next_sibling(&self, index: MovePathIndex) -> MovePathIndex
[src]
fn path_next_sibling(&self, index: MovePathIndex) -> MovePathIndex
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fn set_path_first_move(&self, index: MovePathIndex, first_move: MoveIndex)
[src]
fn set_path_first_move(&self, index: MovePathIndex, first_move: MoveIndex)
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fn set_path_first_child(&self, index: MovePathIndex, first_child: MovePathIndex)
[src]
fn set_path_first_child(&self, index: MovePathIndex, first_child: MovePathIndex)
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fn move_next_move(&self, index: MoveIndex) -> MoveIndex
[src]
fn move_next_move(&self, index: MoveIndex) -> MoveIndex
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Type safe indexing operator
fn is_var_path(&self, index: MovePathIndex) -> bool
[src]
fn is_var_path(&self, index: MovePathIndex) -> bool
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True if index
refers to a variable
pub fn move_path(
&self,
tcx: TyCtxt<'a, 'tcx, 'tcx>,
lp: Rc<LoanPath<'tcx>>
) -> MovePathIndex
[src]
pub fn move_path(
&self,
tcx: TyCtxt<'a, 'tcx, 'tcx>,
lp: Rc<LoanPath<'tcx>>
) -> MovePathIndex
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Returns the existing move path index for lp
, if any, and otherwise adds a new index for
lp
and any of its base paths that do not yet have an index.
fn existing_move_path(&self, lp: &Rc<LoanPath<'tcx>>) -> Option<MovePathIndex>
[src]
fn existing_move_path(&self, lp: &Rc<LoanPath<'tcx>>) -> Option<MovePathIndex>
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fn existing_base_paths(&self, lp: &Rc<LoanPath<'tcx>>) -> Vec<MovePathIndex>
[src]
fn existing_base_paths(&self, lp: &Rc<LoanPath<'tcx>>) -> Vec<MovePathIndex>
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fn add_existing_base_paths(
&self,
lp: &Rc<LoanPath<'tcx>>,
result: &mut Vec<MovePathIndex>
)
[src]
fn add_existing_base_paths(
&self,
lp: &Rc<LoanPath<'tcx>>,
result: &mut Vec<MovePathIndex>
)
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Adds any existing move path indices for lp
and any base paths of lp
to result
, but
does not add new move paths
pub fn add_move(
&self,
tcx: TyCtxt<'a, 'tcx, 'tcx>,
orig_lp: Rc<LoanPath<'tcx>>,
id: ItemLocalId,
kind: MoveKind
)
[src]
pub fn add_move(
&self,
tcx: TyCtxt<'a, 'tcx, 'tcx>,
orig_lp: Rc<LoanPath<'tcx>>,
id: ItemLocalId,
kind: MoveKind
)
🔬 This is a nightly-only experimental API. (rustc_private
)
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Adds a new move entry for a move of lp
that occurs at location id
with kind kind
.
fn add_move_helper(
&self,
tcx: TyCtxt<'a, 'tcx, 'tcx>,
lp: Rc<LoanPath<'tcx>>,
id: ItemLocalId,
kind: MoveKind
)
[src]
fn add_move_helper(
&self,
tcx: TyCtxt<'a, 'tcx, 'tcx>,
lp: Rc<LoanPath<'tcx>>,
id: ItemLocalId,
kind: MoveKind
)
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)
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pub fn add_assignment(
&self,
tcx: TyCtxt<'a, 'tcx, 'tcx>,
lp: Rc<LoanPath<'tcx>>,
assign_id: ItemLocalId,
span: Span,
assignee_id: ItemLocalId,
mode: MutateMode
)
[src]
pub fn add_assignment(
&self,
tcx: TyCtxt<'a, 'tcx, 'tcx>,
lp: Rc<LoanPath<'tcx>>,
assign_id: ItemLocalId,
span: Span,
assignee_id: ItemLocalId,
mode: MutateMode
)
🔬 This is a nightly-only experimental API. (rustc_private
)
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Adds a new record for an assignment to lp
that occurs at location id
with the given
span
.
fn add_assignment_helper(
&self,
tcx: TyCtxt<'a, 'tcx, 'tcx>,
lp: Rc<LoanPath<'tcx>>,
assign_id: ItemLocalId,
span: Span,
assignee_id: ItemLocalId,
mode: MutateMode
)
[src]
fn add_assignment_helper(
&self,
tcx: TyCtxt<'a, 'tcx, 'tcx>,
lp: Rc<LoanPath<'tcx>>,
assign_id: ItemLocalId,
span: Span,
assignee_id: ItemLocalId,
mode: MutateMode
)
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fn add_gen_kills(
&self,
bccx: &BorrowckCtxt<'a, 'tcx>,
dfcx_moves: &mut DataFlowContext<'a, 'tcx, MoveDataFlowOperator>,
dfcx_assign: &mut DataFlowContext<'a, 'tcx, AssignDataFlowOperator>
)
[src]
fn add_gen_kills(
&self,
bccx: &BorrowckCtxt<'a, 'tcx>,
dfcx_moves: &mut DataFlowContext<'a, 'tcx, MoveDataFlowOperator>,
dfcx_assign: &mut DataFlowContext<'a, 'tcx, AssignDataFlowOperator>
)
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)
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Adds the gen/kills for the various moves and
assignments into the provided data flow contexts.
Moves are generated by moves and killed by assignments and
scoping. Assignments are generated by assignment to variables and
killed by scoping. See README.md
for more details.
fn each_base_path<F>(&self, index: MovePathIndex, f: F) -> bool where
F: FnMut(MovePathIndex) -> bool,
[src]
fn each_base_path<F>(&self, index: MovePathIndex, f: F) -> bool where
F: FnMut(MovePathIndex) -> bool,
🔬 This is a nightly-only experimental API. (rustc_private
)
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fn each_extending_path_<F>(&self, index: MovePathIndex, f: &mut F) -> bool where
F: FnMut(MovePathIndex) -> bool,
[src]
fn each_extending_path_<F>(&self, index: MovePathIndex, f: &mut F) -> bool where
F: FnMut(MovePathIndex) -> bool,
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fn each_extending_path<F>(&self, index: MovePathIndex, f: F) -> bool where
F: FnMut(MovePathIndex) -> bool,
[src]
fn each_extending_path<F>(&self, index: MovePathIndex, f: F) -> bool where
F: FnMut(MovePathIndex) -> bool,
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fn each_applicable_move<F>(&self, index0: MovePathIndex, f: F) -> bool where
F: FnMut(MoveIndex) -> bool,
[src]
fn each_applicable_move<F>(&self, index0: MovePathIndex, f: F) -> bool where
F: FnMut(MoveIndex) -> bool,
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fn kill_moves(
&self,
path: MovePathIndex,
kill_id: ItemLocalId,
kill_kind: KillFrom,
dfcx_moves: &mut DataFlowContext<'a, 'tcx, MoveDataFlowOperator>
)
[src]
fn kill_moves(
&self,
path: MovePathIndex,
kill_id: ItemLocalId,
kill_kind: KillFrom,
dfcx_moves: &mut DataFlowContext<'a, 'tcx, MoveDataFlowOperator>
)
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instead?