Struct rustc_borrowck::diags::BorrowckDiags

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pub(crate) struct BorrowckDiags<'infcx, 'tcx> {
    buffered_move_errors: BTreeMap<Vec<MoveOutIndex>, (PlaceRef<'tcx>, Diag<'infcx>)>,
    buffered_mut_errors: FxIndexMap<Span, (Diag<'infcx>, usize)>,
    buffered_diags: Vec<BufferedDiag<'infcx>>,
}

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§buffered_move_errors: BTreeMap<Vec<MoveOutIndex>, (PlaceRef<'tcx>, Diag<'infcx>)>

This field keeps track of move errors that are to be reported for given move indices.

There are situations where many errors can be reported for a single move out (see #53807) and we want only the best of those errors.

The report_use_of_moved_or_uninitialized function checks this map and replaces the diagnostic (if there is one) if the Place of the error being reported is a prefix of the Place of the previous most diagnostic. This happens instead of buffering the error. Once all move errors have been reported, any diagnostics in this map are added to the buffer to be emitted.

BTreeMap is used to preserve the order of insertions when iterating. This is necessary when errors in the map are being re-added to the error buffer so that errors with the same primary span come out in a consistent order.

§buffered_mut_errors: FxIndexMap<Span, (Diag<'infcx>, usize)>§buffered_diags: Vec<BufferedDiag<'infcx>>

Buffer of diagnostics to be reported. A mixture of error and non-error diagnostics.

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impl<'infcx, 'tcx> BorrowckDiags<'infcx, 'tcx>

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pub(crate) fn new() -> Self

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pub(crate) fn buffer_error(&mut self, diag: Diag<'infcx>)

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pub(crate) fn buffer_non_error(&mut self, diag: Diag<'infcx, ()>)

Auto Trait Implementations§

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impl<'infcx, 'tcx> Freeze for BorrowckDiags<'infcx, 'tcx>

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impl<'infcx, 'tcx> !RefUnwindSafe for BorrowckDiags<'infcx, 'tcx>

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impl<'infcx, 'tcx> !Send for BorrowckDiags<'infcx, 'tcx>

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impl<'infcx, 'tcx> !Sync for BorrowckDiags<'infcx, 'tcx>

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impl<'infcx, 'tcx> Unpin for BorrowckDiags<'infcx, 'tcx>

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impl<'infcx, 'tcx> !UnwindSafe for BorrowckDiags<'infcx, 'tcx>

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Size: 104 bytes