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Use prefixed keys for trie node. (#2130)

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* Account for pending insertions when pruning

* Prefixed trie storage

* Comments

* Prefixed trie storage

* Fixed tests

* Fixed tests

* Bumped runtime version

* Bumped runtime version again
This commit is contained in:
Arkadiy Paronyan
2019-03-28 18:46:21 +01:00
committed by Gav Wood
parent f9d0da0a18
commit 7046e13de2
29 changed files with 295 additions and 266 deletions
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substrate/core/trie/src/lib.rs
+7 -2
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@@ -32,6 +32,8 @@ pub use trie_stream::TrieStream;
pub use node_codec::NodeCodec;
/// Various re-exports from the `trie-db` crate.
pub use trie_db::{Trie, TrieMut, DBValue, Recorder, Query};
/// Various re-exports from the `memory-db` crate.
pub use memory_db::{KeyFunction, prefixed_key};
/// As in `trie_db`, but less generic, error type for the crate.
pub type TrieError<H> = trie_db::TrieError<H, Error>;
@@ -42,8 +44,12 @@ impl<H: Hasher, T: hash_db::AsHashDB<H, trie_db::DBValue>> AsHashDB<H> for T {}
pub type HashDB<'a, H> = hash_db::HashDB<H, trie_db::DBValue> + 'a;
/// As in `hash_db`, but less generic, trait exposed.
pub type PlainDB<'a, K> = hash_db::PlainDB<K, trie_db::DBValue> + 'a;
/// As in `memory_db::MemoryDB` that uses prefixed storage key scheme.
pub type PrefixedMemoryDB<H> = memory_db::MemoryDB<H, memory_db::PrefixedKey<H>, trie_db::DBValue>;
/// As in `memory_db::MemoryDB` that uses prefixed storage key scheme.
pub type MemoryDB<H> = memory_db::MemoryDB<H, memory_db::HashKey<H>, trie_db::DBValue>;
/// As in `memory_db`, but less generic, trait exposed.
pub type MemoryDB<H> = memory_db::MemoryDB<H, trie_db::DBValue>;
pub type GenericMemoryDB<H, KF> = memory_db::MemoryDB<H, KF, trie_db::DBValue>;
/// Persistent trie database read-access interface for the a given hasher.
pub type TrieDB<'a, H> = trie_db::TrieDB<'a, H, NodeCodec<H>>;
@@ -313,7 +319,6 @@ mod tests {
use super::*;
use codec::{Encode, Compact};
use substrate_primitives::Blake2Hasher;
use memory_db::MemoryDB;
use hash_db::{HashDB, Hasher};
use trie_db::{DBValue, TrieMut, Trie};
use trie_standardmap::{Alphabet, ValueMode, StandardMap};