fn calculate_sapling_subtree(
read_db: &ZebraDb,
prev_end_height: Height,
prev_tree: Arc<NoteCommitmentTree>,
end_height: Height,
tree: Arc<NoteCommitmentTree>,
) -> NoteCommitmentSubtree<Node>
Expand description
Calculates a note commitment subtree for Sapling, reading blocks from read_db
if needed.
The subtree must be completed by a note commitment in the block at end_height
.
tree
is the tree for that block, and prev_tree
is the tree for the previous block.
prev_tree
is only used to rebuild the subtree if it was completed without using the last
note commitment in the block at end_height
.
ยงPanics
If a subtree is not completed by a note commitment in the block at end_height
.