Expand description
Utility functions to interact with Substrate’s Base-16 Modified Merkle Patricia tree (“trie”).
Modules
Various re-exports from the trie-db crate.
Utility methods to work on radix 16 nibble.
This module is for non generic definition of trie type.
Only the Hasher trait is generic in this case.
Structs
HashDB implementation that append a encoded prefix (unique id bytes) in addition to the
prefix of every key value.
HashDBMut implementation that append a encoded prefix (unique id bytes) in addition to the
prefix of every key value.
substrate trie layout
Concrete implementation of a NodeCodec with Parity Codec encoding, generic over the Hasher
Various re-exports from the trie-db crate.
Records trie nodes as they pass it.
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.
Various re-exports from the trie-db crate.
Iterator for going through all values in the trie in pre-order traversal order.
Codec-flavored TrieStream.
Enums
Error for trie node decoding.
Errors that may occur during proof verification. Most of the errors types simply indicate that the proof is invalid with respect to the statement being verified, and the exact error type can be used for debugging.
Statics
Various re-exports from the hash-db crate.
An empty prefix constant.
Can be use when the prefix is not use internally
or for root nodes.
Traits
Reexport from hash_db, with genericity set for Hasher trait.
Various re-exports from the hash-db crate.
Trait modelling datastore keyed by a hash defined by the Hasher.
Various re-exports from the memory-db crate.
Various re-exports from the trie-db crate.
Description of what kind of query will be made to the trie.
Various re-exports from the trie-db crate.
A key-value datastore implemented as a database-backed modified Merkle tree.
Various re-exports from the trie-db crate.
This trait associates a trie definition with preferred methods.
It also contains own default implementations and can be
used to allow switching implementation.
Various re-exports from the trie-db crate.
Trait with definition of trie layout.
Contains all associated trait needed for
a trie definition or implementation.
Various re-exports from the trie-db crate.
A key-value datastore implemented as a database-backed modified Merkle tree.
Functions
Determine a child trie root given a hash DB and delta values. H is the default hasher, but a generic implementation may ignore this type parameter and use other hashers.
Determine a child trie root given its ordered contents, closed form. H is the default hasher, but a generic implementation may ignore this type parameter and use other hashers.
Determine a trie root given a hash DB and delta values.
Determine the empty child trie root.
Determine the empty trie root.
Call f for all keys in a child trie.
Aborts as soon as f returns false.
Create a proof for a subset of keys in a trie.
Derive a database key from hash value of the node (key) and the node prefix.
Read a value from the child trie.
Read a value from the child trie with given query.
Read a value from the trie.
Read a value from the trie with given Query.
Record all keys for a given root.
Verify a set of key-value pairs against a trie root and a proof.
Type Definitions
Various re-exports from the trie-db crate.
Alias accessor to NodeCodec associated Error type from a TrieLayout.
Various re-exports from the trie-db crate.
Database value
Reexport from hash_db, with genericity set for Hasher trait.
Reexport from hash_db, with genericity set for Hasher trait.
Querying interface, as in trie_db but less generic.
Reexport from hash_db, with genericity set for Hasher trait.
This uses a noops KeyFunction (key addressing must be hashed or using
an encoding scheme that avoid key conflict).
Reexport from hash_db, with genericity set for Hasher trait.
This uses a KeyFunction for prefixing keys internally (avoiding
key conflict for non random keys).
Persistent trie database read-access interface for the a given hasher.
Persistent trie database write-access interface for the a given hasher.
TrieDB error over TrieConfiguration trait.
Hash type for a trie layout.