Function sprout_anchors_refer_to_treestates

fn sprout_anchors_refer_to_treestates(
    sprout_final_treestates: &HashMap<Root, Arc<NoteCommitmentTree>>,
    transaction: &Arc<Transaction>,
    transaction_hash: Hash,
    tx_index_in_block: Option<usize>,
    height: Option<Height>,
) -> Result<(), ValidateContextError>

Checks the Sprout anchors specified by transactions.

Sprout anchors may refer to some earlier block’s final treestate (like Sapling and Orchard do exclusively) or to the interstitial output treestate of any prior JoinSplit within the same transaction.

This method searches for anchors in the supplied sprout_final_treestates (which must be populated with all treestates pointed to in the semantically_verified block; see fetch_sprout_final_treestates()); or in the interstitial treestates which are computed on the fly in this function.