pub struct PartialNullifierTree(/* private fields */);Expand description
The partial sparse merkle tree containing the nullifiers of consumed notes.
A nullifier can only ever be spent once and its value in the tree is the block number at which it was spent.
The tree guarantees that once a nullifier has been inserted into the tree, its block number does not change. Note that inserting the nullifier multiple times with the same block number is valid.
Implementations§
Source§impl PartialNullifierTree
impl PartialNullifierTree
Sourcepub fn new(root: Word) -> Self
pub fn new(root: Word) -> Self
Creates a new partial nullifier tree with the provided root that does not track any nullifiers.
Sourcepub fn with_witnesses(
witnesses: impl IntoIterator<Item = NullifierWitness>,
) -> Result<Self, NullifierTreeError>
pub fn with_witnesses( witnesses: impl IntoIterator<Item = NullifierWitness>, ) -> Result<Self, NullifierTreeError>
Returns a new PartialNullifierTree instantiated with the provided entries.
§Errors
Returns an error if:
- the merkle paths of the witnesses do not result in the same tree root.
Sourcepub fn track_nullifier(
&mut self,
witness: NullifierWitness,
) -> Result<(), NullifierTreeError>
pub fn track_nullifier( &mut self, witness: NullifierWitness, ) -> Result<(), NullifierTreeError>
Adds the given nullifier witness to the partial tree and tracks it. Once a nullifier has
been added to the tree, it can be marked as spent using Self::mark_spent.
§Errors
Returns an error if:
- after the witness’ merkle path was added, the partial nullifier tree has a different root than before it was added.
Sourcepub fn mark_spent(
&mut self,
nullifiers: impl IntoIterator<Item = Nullifier>,
block_num: BlockNumber,
) -> Result<(), NullifierTreeError>
pub fn mark_spent( &mut self, nullifiers: impl IntoIterator<Item = Nullifier>, block_num: BlockNumber, ) -> Result<(), NullifierTreeError>
Marks the given nullifiers as spent at the given block number.
§Errors
Returns an error if:
- a nullifier was already spent.
- a nullifier is not tracked by this partial nullifier tree, that is, its
NullifierWitnesswas not added to the tree previously.
Trait Implementations§
Source§impl Clone for PartialNullifierTree
impl Clone for PartialNullifierTree
Source§fn clone(&self) -> PartialNullifierTree
fn clone(&self) -> PartialNullifierTree
Returns a duplicate of the value. Read more
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreSource§impl Debug for PartialNullifierTree
impl Debug for PartialNullifierTree
Source§impl Default for PartialNullifierTree
impl Default for PartialNullifierTree
Source§fn default() -> PartialNullifierTree
fn default() -> PartialNullifierTree
Returns the “default value” for a type. Read more
Source§impl PartialEq for PartialNullifierTree
impl PartialEq for PartialNullifierTree
impl Eq for PartialNullifierTree
impl StructuralPartialEq for PartialNullifierTree
Auto Trait Implementations§
impl Freeze for PartialNullifierTree
impl RefUnwindSafe for PartialNullifierTree
impl Send for PartialNullifierTree
impl Sync for PartialNullifierTree
impl Unpin for PartialNullifierTree
impl UnwindSafe for PartialNullifierTree
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