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Clarify some host interfaces (#6626)

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This commit is contained in:
Bastian Köcher
2020-07-11 20:47:38 +02:00
committed by GitHub
parent dea99ca669
commit 903cd4e801
1 changed files with 5 additions and 4 deletions
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substrate/primitives/io/src/lib.rs
+5 -4
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@@ -134,7 +134,7 @@ pub trait Storage {
///
/// The hashing algorithm is defined by the `Block`.
///
/// Returns the SCALE encoded hash.
/// Returns a `Vec<u8>` that holds the SCALE encoded hash.
fn root(&mut self) -> Vec<u8> {
self.storage_root()
}
@@ -144,7 +144,7 @@ pub trait Storage {
///
/// The hashing algorithm is defined by the `Block`.
///
/// Returns an `Some(_)` which holds the SCALE encoded hash or `None` when
/// Returns `Some(Vec<u8>)` which holds the SCALE encoded hash or `None` when
/// changes trie is disabled.
fn changes_root(&mut self, parent_hash: &[u8]) -> Option<Vec<u8>> {
self.storage_changes_root(parent_hash)
@@ -306,7 +306,7 @@ pub trait DefaultChildStorage {
/// "Commit" all existing operations and compute the resulting child storage root.
/// The hashing algorithm is defined by the `Block`.
///
/// Returns the SCALE encoded hash.
/// Returns a `Vec<u8>` that holds the SCALE encoded hash.
fn root(
&mut self,
storage_key: &[u8],
@@ -379,7 +379,8 @@ pub trait Misc {
/// Extract the runtime version of the given wasm blob by calling `Core_version`.
///
/// Returns the SCALE encoded runtime version and `None` if the call failed.
/// Returns `None` if calling the function failed for any reason or `Some(Vec<u8>)` where
/// the `Vec<u8>` holds the SCALE encoded runtime version.
///
/// # Performance
///