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remove duplicate try_into_trie_backend (#779)

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This commit is contained in:
Guanqun Lu
2018-09-20 18:36:24 +08:00
committed by Robert Habermeier
parent caa8541ada
commit 43068f8fc3
1 changed files with 1 additions and 9 deletions
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substrate/core/state-machine/src/backend.rs
+1 -9
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@@ -117,14 +117,6 @@ impl<H, C> PartialEq for InMemory<H, C> {
} }
impl<H: Hasher, C: NodeCodec<H>> InMemory<H, C> where H::Out: HeapSizeOf { impl<H: Hasher, C: NodeCodec<H>> InMemory<H, C> where H::Out: HeapSizeOf {
/// Try convert into trie backend.
pub fn try_into_trie_backend(self) -> Option<TrieBackend<MemoryDB<H>, H, C>> {
let mut mdb = MemoryDB::default();
let root = insert_into_memory_db::<H, C, _>(&mut mdb, self.inner.into_iter())?;
Some(TrieBackend::new(mdb, root))
}
/// Copy the state, with applied updates /// Copy the state, with applied updates
pub fn update(&self, changes: <Self as Backend<H, C>>::Transaction) -> Self { pub fn update(&self, changes: <Self as Backend<H, C>>::Transaction) -> Self {
let mut inner: HashMap<_, _> = self.inner.clone(); let mut inner: HashMap<_, _> = self.inner.clone();
@@ -189,7 +181,7 @@ impl<H: Hasher, C: NodeCodec<H>> Backend<H, C> for InMemory<H, C> where H::Out:
fn try_into_trie_backend(self) -> Option<TrieBackend<Self::TrieBackendStorage, H, C>> { fn try_into_trie_backend(self) -> Option<TrieBackend<Self::TrieBackendStorage, H, C>> {
let mut mdb = MemoryDB::new(); let mut mdb = MemoryDB::new();
let root = insert_into_memory_db::<H, C, _>(&mut mdb, self.inner.clone().into_iter())?; let root = insert_into_memory_db::<H, C, _>(&mut mdb, self.inner.into_iter())?;
Some(TrieBackend::new(mdb, root)) Some(TrieBackend::new(mdb, root))
} }
} }