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generate_storage_alias: Rewrite as proc macro attribute (#11387)

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* generate_storage_alias: Rewrite as proc macro attribute

This rewrites the `generate_storage_alias!` declarative macro as proc-macro attribute. While doing
this the name is changed to `storage_alias`. The prefix can now also be the name of a pallet. This
makes storage aliases work in migrations for all kind of chains and not just for the ones that use
predefined prefixes.

* Fix compilation and FMT

* Moare fixes

* 🤦

* ......

* Rework the syntax and support instancing

* FMT

* Prefix variants with `Storage`

* Make it compile

* Fix where clause on rust stable
This commit is contained in:
Bastian Köcher
2022-05-18 00:45:56 +02:00
committed by GitHub
parent 27f08fec3a
commit 74428fa8ac
21 changed files with 884 additions and 379 deletions
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substrate/frame/support/src/storage/mod.rs
+9 -10
View File
@@ -1545,10 +1545,8 @@ mod test {
fn prefix_iterator_pagination_works() {
TestExternalities::default().execute_with(|| {
use crate::{hash::Identity, storage::generator::map::StorageMap};
crate::generate_storage_alias! {
MyModule,
MyStorageMap => Map<(Identity, u64), u64>
}
#[crate::storage_alias]
type MyStorageMap = StorageMap<MyModule, Identity, u64, u64>;
MyStorageMap::insert(1, 10);
MyStorageMap::insert(2, 20);
@@ -1663,12 +1661,13 @@ mod test {
});
}
crate::generate_storage_alias! { Prefix, Foo => Value<WeakBoundedVec<u32, ConstU32<7>>> }
crate::generate_storage_alias! { Prefix, FooMap => Map<(Twox128, u32), BoundedVec<u32, ConstU32<7>>> }
crate::generate_storage_alias! {
Prefix,
FooDoubleMap => DoubleMap<(Twox128, u32), (Twox128, u32), BoundedVec<u32, ConstU32<7>>>
}
#[crate::storage_alias]
type Foo = StorageValue<Prefix, WeakBoundedVec<u32, ConstU32<7>>>;
#[crate::storage_alias]
type FooMap = StorageMap<Prefix, Twox128, u32, BoundedVec<u32, ConstU32<7>>>;
#[crate::storage_alias]
type FooDoubleMap =
StorageDoubleMap<Prefix, Twox128, u32, Twox128, u32, BoundedVec<u32, ConstU32<7>>>;
#[test]
fn try_append_works() {