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BorrowFacts

shape_vm::mir::solver

Struct BorrowFacts 

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pub struct BorrowFacts {
Show 22 fields
    pub loan_issued_at: Vec<(u32, u32)>,
    pub cfg_edge: Vec<(u32, u32)>,
    pub invalidates: Vec<(u32, u32)>,
    pub use_of_loan: Vec<(u32, u32)>,
    pub point_spans: HashMap<u32, Span>,
    pub loan_info: HashMap<u32, LoanInfo>,
    pub potential_conflicts: Vec<(u32, u32)>,
    pub writes: Vec<(u32, Place, Span)>,
    pub reads: Vec<(u32, Place, Span)>,
    pub slot_escape_status: HashMap<SlotId, EscapeStatus>,
    pub escaped_loans: Vec<(u32, Span)>,
    pub loan_sinks: Vec<LoanSink>,
    pub task_boundary_loans: Vec<(u32, Span)>,
    pub closure_capture_loans: Vec<(u32, Span)>,
    pub array_store_loans: Vec<(u32, Span)>,
    pub object_store_loans: Vec<(u32, Span)>,
    pub enum_store_loans: Vec<(u32, Span)>,
    pub object_assignment_loans: Vec<(u32, Span)>,
    pub array_assignment_loans: Vec<(u32, Span)>,
    pub return_reference_candidates: Vec<(ReturnReferenceSummary, Span)>,
    pub non_reference_return_spans: Vec<Span>,
    pub non_sendable_task_boundary: Vec<(u32, Span)>,

}
Expand description

Input facts extracted from MIR for the Datafrog solver.

Fields§

§loan_issued_at: Vec<(u32, u32)>

(loan_id, point) — loan was created at this point

§cfg_edge: Vec<(u32, u32)>

(from_point, to_point) — control flow edge

§invalidates: Vec<(u32, u32)>

(point, loan_id) — this point invalidates the loan (drop, reassignment)

§use_of_loan: Vec<(u32, u32)>

(loan_id, point) — the loan (reference) is used at this point

§point_spans: HashMap<u32, Span>

Source span for each statement point.

§loan_info: HashMap<u32, LoanInfo>

Loan metadata for error reporting.

§potential_conflicts: Vec<(u32, u32)>

Points where two loans conflict (same place, incompatible borrows).

§writes: Vec<(u32, Place, Span)>

Writes that may conflict with active loans: (point, place, span).

§reads: Vec<(u32, Place, Span)>

Reads from owner places that may conflict with active exclusive loans.

§slot_escape_status: HashMap<SlotId, EscapeStatus>

Escape classification for every local slot in the MIR function.

§escaped_loans: Vec<(u32, Span)>

Loans that flow into the dedicated return slot and would escape.

§loan_sinks: Vec<LoanSink>

Unified sink records for all loan escapes/stores/boundaries.

§task_boundary_loans: Vec<(u32, Span)>

Exclusive loans captured across an async/task boundary.

§closure_capture_loans: Vec<(u32, Span)>

Loans captured into a closure environment.

§array_store_loans: Vec<(u32, Span)>

Loans stored into array literals.

§object_store_loans: Vec<(u32, Span)>

Loans stored into object/struct literals.

§enum_store_loans: Vec<(u32, Span)>

Loans stored into enum payloads.

§object_assignment_loans: Vec<(u32, Span)>

Loans written through field assignments into aggregate places.

§array_assignment_loans: Vec<(u32, Span)>

Loans written through index assignments into aggregate places.

§return_reference_candidates: Vec<(ReturnReferenceSummary, Span)>

Reference-return summaries flowing into the return slot.

§non_reference_return_spans: Vec<Span>

Return-slot writes that produce a plain owned value.

§non_sendable_task_boundary: Vec<(u32, Span)>

Non-sendable values crossing detached task boundaries (e.g., closures with mutable captures).

Trait Implementations§

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impl Debug for BorrowFacts

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for BorrowFacts

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fn default() -> BorrowFacts

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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const ALIGN: usize

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type Init = T

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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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