use bm::{Backend, ValueOf, Error};
use primitive_types::H256;
use generic_array::{GenericArray, ArrayLength};
use crate::{ElementalFixedVecRef, ElementalFixedVec, IntoVectorTree, IntoTree, FromTree, FromVectorTree, Intermediate, End, Composite};
impl Composite for H256 { }
impl<DB> IntoTree<DB> for H256 where
DB: Backend<Intermediate=Intermediate, End=End>
{
fn into_tree(&self, db: &mut DB) -> Result<ValueOf<DB>, Error<DB::Error>> {
ElementalFixedVecRef(&self.0.as_ref()).into_vector_tree(db, None)
}
}
impl<DB> FromTree<DB> for H256 where
DB: Backend<Intermediate=Intermediate, End=End>
{
fn from_tree(root: &ValueOf<DB>, db: &DB) -> Result<Self, Error<DB::Error>> {
let value = ElementalFixedVec::<u8>::from_vector_tree(root, db, 32, None)?;
Ok(Self::from_slice(value.0.as_ref()))
}
}
macro_rules! impl_fixed_array {
( $( $n:expr ),* ) => { $(
impl<T> Composite for [T; $n] { }
impl<DB, T> IntoTree<DB> for [T; $n] where
DB: Backend<Intermediate=Intermediate, End=End>,
for<'a> ElementalFixedVecRef<'a, T>: IntoTree<DB>,
{
fn into_tree(&self, db: &mut DB) -> Result<ValueOf<DB>, Error<DB::Error>> {
ElementalFixedVecRef(&self[..]).into_tree(db)
}
}
impl<DB, T> FromTree<DB> for [T; $n] where
DB: Backend<Intermediate=Intermediate, End=End>,
T: Default + Copy,
for<'a> ElementalFixedVec<T>: FromVectorTree<DB>,
{
fn from_tree(root: &ValueOf<DB>, db: &DB) -> Result<Self, Error<DB::Error>> {
let value = ElementalFixedVec::<T>::from_vector_tree(root, db, $n, None)?;
let mut ret = [T::default(); $n];
for (i, v) in value.0.into_iter().enumerate() {
ret[i] = v;
}
Ok(ret)
}
}
)* }
}
impl_fixed_array!(1, 2, 3, 4, 5, 6, 7, 8,
9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31, 32);
impl<T, L: ArrayLength<T>> Composite for GenericArray<T, L> { }
impl<DB, T, L: ArrayLength<T>> IntoTree<DB> for GenericArray<T, L> where
DB: Backend<Intermediate=Intermediate, End=End>,
for<'a> ElementalFixedVecRef<'a, T>: IntoVectorTree<DB>,
{
fn into_tree(&self, db: &mut DB) -> Result<ValueOf<DB>, Error<DB::Error>> {
ElementalFixedVecRef(&self[..]).into_vector_tree(db, None)
}
}
impl<DB, T, L: ArrayLength<T>> FromTree<DB> for GenericArray<T, L> where
DB: Backend<Intermediate=Intermediate, End=End>,
for<'a> ElementalFixedVec<T>: FromVectorTree<DB>,
{
fn from_tree(root: &ValueOf<DB>, db: &DB) -> Result<Self, Error<DB::Error>> {
let value = ElementalFixedVec::<T>::from_vector_tree(root, db, L::to_usize(), None)?;
Ok(GenericArray::from_exact_iter(value.0)
.expect("Fixed vec must build vector with L::as_usize; qed"))
}
}