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Use StorageNMap for Approvals in assets pallet (#8816)

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* Use StorageNMap for Approvals in assets pallet

* Use EncodeLike on HashKeyPrefix trait bounds

* Add comments clarifying AccountId roles

* Properly document the keys in the Approvals storage

* Fix line width
This commit is contained in:
Keith Yeung
2021-05-16 23:27:06 -07:00
committed by GitHub
parent c28ab1fcac
commit fcf83c0278
3 changed files with 68 additions and 57 deletions
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substrate/frame/support/src/storage/types/key.rs
+48 -26
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@@ -248,19 +248,23 @@ pub trait HasReversibleKeyPrefix<P>: ReversibleKeyGenerator + HasKeyPrefix<P> {
macro_rules! impl_key_prefix_for {
(($($keygen:ident),+), ($($prefix:ident),+), ($($suffix:ident),+)) => {
paste! {
impl<$($keygen: FullCodec,)+ $( [<$keygen $keygen>]: StorageHasher),+>
HasKeyPrefix<($($prefix),+)> for
($(Key<[<$keygen $keygen>], $keygen>),+)
{
impl<
$($keygen: FullCodec,)+
$( [<$keygen $keygen>]: StorageHasher,)+
$( [<KArg $prefix>]: EncodeLike<$prefix> ),+
> HasKeyPrefix<($( [<KArg $prefix>] ),+)> for ($(Key<[<$keygen $keygen>], $keygen>),+) {
type Suffix = ($($suffix),+);
fn partial_key(prefix: ($($prefix),+)) -> Vec<u8> {
fn partial_key(prefix: ($( [<KArg $prefix>] ),+)) -> Vec<u8> {
<($(Key<[<$prefix $prefix>], $prefix>),+)>::final_key(prefix)
}
}
impl<$($keygen: FullCodec,)+ $( [<$keygen $keygen>]: ReversibleStorageHasher),+>
HasReversibleKeyPrefix<($($prefix),+)> for
impl<
$($keygen: FullCodec,)+
$( [<$keygen $keygen>]: ReversibleStorageHasher,)+
$( [<KArg $prefix>]: EncodeLike<$prefix> ),+
> HasReversibleKeyPrefix<($( [<KArg $prefix>] ),+)> for
($(Key<[<$keygen $keygen>], $keygen>),+)
{
fn decode_partial_key(key_material: &[u8]) -> Result<Self::Suffix, codec::Error> {
@@ -271,19 +275,23 @@ macro_rules! impl_key_prefix_for {
};
(($($keygen:ident),+), $prefix:ident, ($($suffix:ident),+)) => {
paste! {
impl<$($keygen: FullCodec,)+ $( [<$keygen $keygen>]: StorageHasher),+>
HasKeyPrefix<($prefix,)> for
($(Key<[<$keygen $keygen>], $keygen>),+)
{
impl<
$($keygen: FullCodec,)+
$( [<$keygen $keygen>]: StorageHasher,)+
[<KArg $prefix>]: EncodeLike<$prefix>
> HasKeyPrefix<( [<KArg $prefix>] ,)> for ($(Key<[<$keygen $keygen>], $keygen>),+) {
type Suffix = ($($suffix),+);
fn partial_key(prefix: ($prefix,)) -> Vec<u8> {
fn partial_key(prefix: ( [<KArg $prefix>] ,)) -> Vec<u8> {
<Key<[<$prefix $prefix>], $prefix>>::final_key(prefix)
}
}
impl<$($keygen: FullCodec,)+ $( [<$keygen $keygen>]: ReversibleStorageHasher),+>
HasReversibleKeyPrefix<($prefix,)> for
impl<
$($keygen: FullCodec,)+
$( [<$keygen $keygen>]: ReversibleStorageHasher,)+
[<KArg $prefix>]: EncodeLike<$prefix>
> HasReversibleKeyPrefix<( [<KArg $prefix>] ,)> for
($(Key<[<$keygen $keygen>], $keygen>),+)
{
fn decode_partial_key(key_material: &[u8]) -> Result<Self::Suffix, codec::Error> {
@@ -294,19 +302,23 @@ macro_rules! impl_key_prefix_for {
};
(($($keygen:ident),+), ($($prefix:ident),+), $suffix:ident) => {
paste! {
impl<$($keygen: FullCodec,)+ $( [<$keygen $keygen>]: StorageHasher),+>
HasKeyPrefix<($($prefix),+)> for
($(Key<[<$keygen $keygen>], $keygen>),+)
{
impl<
$($keygen: FullCodec,)+
$( [<$keygen $keygen>]: StorageHasher,)+
$( [<KArg $prefix>]: EncodeLike<$prefix>),+
> HasKeyPrefix<($( [<KArg $prefix>] ),+)> for ($(Key<[<$keygen $keygen>], $keygen>),+) {
type Suffix = $suffix;
fn partial_key(prefix: ($($prefix),+)) -> Vec<u8> {
fn partial_key(prefix: ($( [<KArg $prefix>] ),+)) -> Vec<u8> {
<($(Key<[<$prefix $prefix>], $prefix>),+)>::final_key(prefix)
}
}
impl<$($keygen: FullCodec,)+ $( [<$keygen $keygen>]: ReversibleStorageHasher),+>
HasReversibleKeyPrefix<($($prefix),+)> for
impl<
$($keygen: FullCodec,)+
$( [<$keygen $keygen>]: ReversibleStorageHasher,)+
$( [<KArg $prefix>]: EncodeLike<$prefix> ),+
> HasReversibleKeyPrefix<($( [<KArg $prefix>] ),+)> for
($(Key<[<$keygen $keygen>], $keygen>),+)
{
fn decode_partial_key(key_material: &[u8]) -> Result<Self::Suffix, codec::Error> {
@@ -317,18 +329,28 @@ macro_rules! impl_key_prefix_for {
};
}
impl<A: FullCodec, B: FullCodec, X: StorageHasher, Y: StorageHasher> HasKeyPrefix<(A,)>
for (Key<X, A>, Key<Y, B>)
impl<A, B, X, Y, KArg> HasKeyPrefix<(KArg,)> for (Key<X, A>, Key<Y, B>)
where
A: FullCodec,
B: FullCodec,
X: StorageHasher,
Y: StorageHasher,
KArg: EncodeLike<A>,
{
type Suffix = B;
fn partial_key(prefix: (A,)) -> Vec<u8> {
fn partial_key(prefix: (KArg,)) -> Vec<u8> {
<Key<X, A>>::final_key(prefix)
}
}
impl<A: FullCodec, B: FullCodec, X: ReversibleStorageHasher, Y: ReversibleStorageHasher>
HasReversibleKeyPrefix<(A,)> for (Key<X, A>, Key<Y, B>)
impl<A, B, X, Y, KArg> HasReversibleKeyPrefix<(KArg,)> for (Key<X, A>, Key<Y, B>)
where
A: FullCodec,
B: FullCodec,
X: ReversibleStorageHasher,
Y: ReversibleStorageHasher,
KArg: EncodeLike<A>,
{
fn decode_partial_key(key_material: &[u8]) -> Result<B, codec::Error> {
<Key<Y, B>>::decode_final_key(key_material).map(|k| k.0)