Struct sp_state_machine::StorageProof [−][src]
pub struct StorageProof { /* fields omitted */ }
Expand description
A proof that some set of key-value pairs are included in the storage trie. The proof contains the storage values so that the partial storage backend can be reconstructed by a verifier that does not already have access to the key-value pairs.
The proof consists of the set of serialized nodes in the storage trie accessed when looking up the keys covered by the proof. Verifying the proof requires constructing the partial trie from the serialized nodes and performing the key lookups.
Implementations
Constructs a storage proof from a subset of encoded trie nodes in a storage backend.
Returns a new empty proof.
An empty proof is capable of only proving trivial statements (ie. that an empty set of key-value pairs exist in storage).
Create an iterator over trie nodes constructed from the proof. The nodes are not guaranteed to be traversed in any particular order.
Creates a MemoryDB
from Self
.
Merges multiple storage proofs covering potentially different sets of keys into one proof covering all keys. The merged proof output may be smaller than the aggregate size of the input proofs due to deduplication of trie nodes.
pub fn into_compact_proof<H>(
self,
root: <H as Hasher>::Out
) -> Result<CompactProof, Error<Layout<H>>> where
H: Hasher,
pub fn into_compact_proof<H>(
self,
root: <H as Hasher>::Out
) -> Result<CompactProof, Error<Layout<H>>> where
H: Hasher,
Encode as a compact proof with default trie layout.
Trait Implementations
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
Auto Trait Implementations
impl RefUnwindSafe for StorageProof
impl Send for StorageProof
impl Sync for StorageProof
impl Unpin for StorageProof
impl UnwindSafe for StorageProof
Blanket Implementations
Mutably borrows from an owned value. Read more
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Compare self to key
and return true
if they are equal.
Causes self
to use its Binary
implementation when Debug
-formatted.
Causes self
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Debug
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Pipes by value. This is generally the method you want to use. Read more
Borrows self
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