Struct rustc_typeck::check::upvar::InferBorrowKind

struct InferBorrowKind<'a, 'gcx: 'a + 'tcx, 'tcx: 'a> {
    fcx: &'a FnCtxt<'a, 'gcx, 'tcx>,
    closure_def_id: DefId,
    current_closure_kind: ClosureKind,
    current_origin: Option<(Span, Name)>,
    adjust_upvar_captures: UpvarCaptureMap<'tcx>,
}

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Fields

fcx: &'a FnCtxt<'a, 'gcx, 'tcx>

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closure_def_id: DefId

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current_closure_kind: ClosureKind

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current_origin: Option<(Span, Name)>

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adjust_upvar_captures: UpvarCaptureMap<'tcx>

🔬 This is a nightly-only experimental API. (rustc_private)

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Methods

impl<'a, 'gcx, 'tcx> InferBorrowKind<'a, 'gcx, 'tcx>

fn adjust_upvar_borrow_kind_for_consume(     &mut self,     cmt: &cmt_<'tcx>,     mode: ConsumeMode )

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fn adjust_upvar_borrow_kind_for_mut(&mut self, cmt: &cmt_<'tcx>)

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Indicates that cmt is being directly mutated (e.g., assigned to). If cmt contains any by-ref upvars, this implies that those upvars must be borrowed using an &mut borrow.

fn adjust_upvar_borrow_kind_for_unique(&mut self, cmt: &cmt_<'tcx>)

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fn try_adjust_upvar_deref(     &mut self,     cmt: &cmt_<'tcx>,     borrow_kind: BorrowKind ) -> bool

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fn adjust_upvar_borrow_kind(&mut self, upvar_id: UpvarId, kind: BorrowKind)

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We infer the borrow_kind with which to borrow upvars in a stack closure. The borrow_kind basically follows a lattice of imm < unique-imm < mut, moving from left to right as needed (but never right to left). Here the argument mutbl is the borrow_kind that is required by some particular use.

fn adjust_closure_kind(     &mut self,     closure_id: LocalDefId,     new_kind: ClosureKind,     upvar_span: Span,     var_name: Name )

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Trait Implementations

impl<'a, 'gcx, 'tcx> Delegate<'tcx> for InferBorrowKind<'a, 'gcx, 'tcx>

fn consume(     &mut self,     _consume_id: NodeId,     _consume_span: Span,     cmt: &cmt_<'tcx>,     mode: ConsumeMode )

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fn matched_pat(     &mut self,     _matched_pat: &Pat,     _cmt: &cmt_<'tcx>,     _mode: MatchMode )

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fn consume_pat(     &mut self,     _consume_pat: &Pat,     cmt: &cmt_<'tcx>,     mode: ConsumeMode )

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fn borrow(     &mut self,     borrow_id: NodeId,     _borrow_span: Span,     cmt: &cmt_<'tcx>,     _loan_region: Region<'tcx>,     bk: BorrowKind,     _loan_cause: LoanCause )

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fn decl_without_init(&mut self, _id: NodeId, _span: Span)

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fn mutate(     &mut self,     _assignment_id: NodeId,     _assignment_span: Span,     assignee_cmt: &cmt_<'tcx>,     _mode: MutateMode )

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