Type Alias sp_trie::trie_types::Lookup

pub type Lookup<'a, 'cache, H, Q> = Lookup<'a, 'cache, LayoutV1<H>, Q>;

Querying interface, as in trie_db but less generic.

Aliased Type

struct Lookup<'a, 'cache, H, Q> {
    pub db: &'a dyn HashDBRef<<LayoutV1<H> as TrieLayout>::Hash, Vec<u8>>,
    pub query: Q,
    pub hash: <<LayoutV1<H> as TrieLayout>::Hash as Hasher>::Out,
    pub cache: Option<&'cache mut dyn TrieCache<<LayoutV1<H> as TrieLayout>::Codec>>,
    pub recorder: Option<&'cache mut dyn TrieRecorder<<<LayoutV1<H> as TrieLayout>::Hash as Hasher>::Out>>,
}

Fields

db: &'a dyn HashDBRef<<LayoutV1<H> as TrieLayout>::Hash, Vec<u8>>

database to query from.

query: Q

Query object to record nodes and transform data.

hash: <<LayoutV1<H> as TrieLayout>::Hash as Hasher>::Out

Hash to start at

cache: Option<&'cache mut dyn TrieCache<<LayoutV1<H> as TrieLayout>::Codec>>

Optional cache that should be used to speed up the lookup.

recorder: Option<&'cache mut dyn TrieRecorder<<<LayoutV1<H> as TrieLayout>::Hash as Hasher>::Out>>

Optional recorder that will be called to record all trie accesses.