Function sp_state_machine::read_child_proof_check_on_proving_backend

pub fn read_child_proof_check_on_proving_backend<H>(
    proving_backend: &TrieBackend<MemoryDB<H>, H>,
    child_info: &ChildInfo,
    key: &[u8]
) -> Result<Option<Vec<u8>>, Box<dyn Error>>where
    H: Hasher,
    H::Out: Ord + Codec,

Check child storage read proof on pre-created proving backend.

Examples found in repository

src/lib.rs (lines 1117-1121)

	pub fn read_child_proof_check<H, I>(
		root: H::Out,
		proof: StorageProof,
		child_info: &ChildInfo,
		keys: I,
	) -> Result<HashMap<Vec<u8>, Option<Vec<u8>>>, Box<dyn Error>>
	where
		H: Hasher + 'static,
		H::Out: Ord + Codec,
		I: IntoIterator,
		I::Item: AsRef<[u8]>,
	{
		let proving_backend = create_proof_check_backend::<H>(root, proof)?;
		let mut result = HashMap::new();
		for key in keys.into_iter() {
			let value = read_child_proof_check_on_proving_backend(
				&proving_backend,
				child_info,
				key.as_ref(),
			)?;
			result.insert(key.as_ref().to_vec(), value);
		}
		Ok(result)
	}