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feat(chain): add walk_ancestors_from_root to TxGraph #2218

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feat(chain): add walk_ancestors_from_root to TxGraph #2218

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18 changes: 18 additions & 0 deletions crates/chain/src/tx_graph.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -498,6 +498,24 @@ impl<A: Clone + Ord> TxGraph<A> {
TxAncestors::new_exclude_root(self, tx, walk_map)
}

/// Creates an iterator that filters and maps ancestor transactions.
///
/// Similar to [`Self::walk_ancestors`] but includes the starting `tx` in the iteration at
/// `depth` 0.
///
/// Refer to [`Self::walk_ancestors`] for `walk_map` usage.
pub fn walk_ancestors_from_root<'g, T, F, O>(
&'g self,
tx: T,
walk_map: F,
) -> TxAncestors<'g, A, F, O>
where
T: Into<Arc<Transaction>>,
F: FnMut(usize, Arc<Transaction>) -> Option<O> + 'g,
{
TxAncestors::new_include_root(self, tx, walk_map)
}

/// Creates an iterator that filters and maps descendants from the starting `txid`.
///
/// The supplied closure takes in two inputs `(depth, descendant_txid)`:
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