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Node sink and selector suffixes support #1

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Merged
merged 3 commits into from
Jun 8, 2023
Merged

Node sink and selector suffixes support #1

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95bd95c
node.forEach methods that allow us to track node positions and extrac…
i-norden May 23, 2023
dc372fd
Root.ForEach methods that use the node.forEachTrackedWithNodeSink met…
i-norden May 23, 2023
008f534
Diff methods using node.forEachTracked/node.forEachTrackedWithNodeSin…
i-norden May 23, 2023
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13 changes: 13 additions & 0 deletions amt.go
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Original file line number Diff line number Diff line change
Expand Up @@ -321,6 +321,19 @@ func (r *Root) ForEachAt(ctx context.Context, start uint64, cb func(uint64, *cbg
return r.node.forEachAt(ctx, r.store, r.bitWidth, r.height, start, 0, cb)
}

// ForEachTrackedWithNodeSink iterates over the entire AMT and calls the cb function for each
// entry found in the leaf nodes. The callback will receive the index and the
// value of each element.
func (r *Root) ForEachTrackedWithNodeSink(ctx context.Context, b *bytes.Buffer, sink cbg.CBORUnmarshaler, cb func(uint64, *cbg.Deferred, []int) error) error {
return r.node.forEachAtTrackedWithNodeSink(ctx, r.store, []int{}, r.bitWidth, r.height, 0, 0, b, sink, cb)
}

// ForEachAtTrackedWithNodeSink iterates over the AMT beginning from the given start index. See
// ForEach for more details.
func (r *Root) ForEachAtTrackedWithNodeSink(ctx context.Context, start uint64, b *bytes.Buffer, sink cbg.CBORUnmarshaler, cb func(uint64, *cbg.Deferred, []int) error) error {
return r.node.forEachAtTrackedWithNodeSink(ctx, r.store, []int{}, r.bitWidth, r.height, start, 0, b, sink, cb)
}

// FirstSetIndex finds the lowest index in this AMT that has a value set for
// it. If this operation is called on an empty AMT, an ErrNoValues will be
// returned.
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