[][src]Struct rustc_mir::borrow_check::nll::type_check::liveness::trace::LivenessContext

struct LivenessContext<'me, 'typeck, 'flow, 'gcx, 'tcx> where
    'typeck: 'me,
    'flow: 'me,
    'tcx: 'typeck + 'flow,
    'gcx: 'tcx, 
{ typeck: &'me mut TypeChecker<'typeck, 'gcx, 'tcx>, elements: &'me RegionValueElements, mir: &'me Mir<'tcx>, move_data: &'me MoveData<'tcx>, drop_data: FxHashMap<Ty<'tcx>, DropData<'tcx>>, flow_inits: &'me mut FlowAtLocation<MaybeInitializedPlaces<'flow, 'gcx, 'tcx>>, local_use_map: &'me LocalUseMap<'me>, liveness_map: &'me NllLivenessMap, }
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Contextual state for the type-liveness generator.

Fields

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Current type-checker, giving us our inference context etc.

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Defines the PointIndex mapping

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MIR we are analyzing.

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Mapping to/from the various indices used for initialization tracking.

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Cache for the results of dropck_outlives query.

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Results of dataflow tracking which variables (and paths) have been initialized.

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Index indicating where each variable is assigned, used, or dropped.

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Map tracking which variables need liveness computation.

Methods

impl<'_, '_, '_, '_, 'tcx> LivenessContext<'_, '_, '_, '_, 'tcx>
[src]

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True if the local variable (or some part of it) is initialized in the terminator of block. We need to check this to determine if a DROP of some local variable will have an effect -- note that drops, as they may unwind, are always terminators.

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True if the path mpi (or some part of it) is initialized at the exit of block.

Warning: Does not account for the result of Call instructions.

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Store the result that all regions in value are live for the points live_at.

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Some variable with type live_ty is "drop live" at location -- i.e., it may be dropped later. This means that some of the regions in its type must be live at location. The precise set will depend on the dropck constraints, and in particular this takes #[may_dangle] into account.

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

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Auto Trait Implementations

impl<'me, 'typeck, 'flow, 'gcx, 'tcx> !Send for LivenessContext<'me, 'typeck, 'flow, 'gcx, 'tcx>

impl<'me, 'typeck, 'flow, 'gcx, 'tcx> !Sync for LivenessContext<'me, 'typeck, 'flow, 'gcx, 'tcx>

Blanket Implementations

impl<T> From for T
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Performs the conversion.

impl<T, U> Into for T where
    U: From<T>, 
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Performs the conversion.

impl<T, U> TryFrom for T where
    T: From<U>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T> Borrow for T where
    T: ?Sized
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Important traits for &'a mut R

Immutably borrows from an owned value. Read more

impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T> BorrowMut for T where
    T: ?Sized
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Important traits for &'a mut R

Mutably borrows from an owned value. Read more

impl<T> Any for T where
    T: 'static + ?Sized
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🔬 This is a nightly-only experimental API. (get_type_id)

this method will likely be replaced by an associated static

Gets the TypeId of self. Read more

impl<E> SpecializationError for E
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Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S is the encoder/decoder state type, T is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more

impl<T> Erased for T
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impl<T> Send for T where
    T: ?Sized
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impl<T> Sync for T where
    T: ?Sized
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impl<T> Erased for T

impl<T> MaybeResult for T
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🔬 This is a nightly-only experimental API. (rustc_private)

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

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impl<'a, T> Captures for T where
    T: ?Sized
[src]