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BoundedVec + Shims for Append/DecodeLength (#8556)

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* prototype for shawn

* Clean and document it

* Add more docs

* Move imports

* Some changes for easier compat.

* revert exmaple pallet

* rename

* BoundedVec for AccountLocks (#8580)

* Example with balances

* Fix tests

* Make it indexable

* fix

* Fix tests

* fix test

* Fix collective as well

* Fix test

* Update frame/support/src/storage/mod.rs

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>

* Repot and add for value

* Add for map and double map

* Final touches.

* Update frame/support/src/storage/bounded_vec.rs

Co-authored-by: Guillaume Thiolliere <gui.thiolliere@gmail.com>

* Add a few more tests

* Add import

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>
Co-authored-by: Guillaume Thiolliere <gui.thiolliere@gmail.com>
This commit is contained in:
Kian Paimani
2021-04-16 08:06:05 +02:00
committed by GitHub
parent 6c9c687a31
commit 6bcf5f21c4
8 changed files with 597 additions and 30 deletions
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substrate/frame/support/src/storage/mod.rs
+10 -4
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@@ -20,12 +20,16 @@
use sp_core::storage::ChildInfo;
use sp_std::prelude::*;
use codec::{FullCodec, FullEncode, Encode, EncodeLike, Decode};
use crate::hash::{Twox128, StorageHasher, ReversibleStorageHasher};
use crate::{
hash::{Twox128, StorageHasher, ReversibleStorageHasher},
traits::Get,
};
use sp_runtime::generic::{Digest, DigestItem};
pub use sp_runtime::TransactionOutcome;
pub mod unhashed;
pub mod hashed;
pub mod bounded_vec;
pub mod child;
#[doc(hidden)]
pub mod generator;
@@ -806,19 +810,21 @@ pub trait StorageDecodeLength: private::Sealed + codec::DecodeLength {
/// outside of this crate.
mod private {
use super::*;
use bounded_vec::{BoundedVecValue, BoundedVec};
pub trait Sealed {}
impl<T: Encode> Sealed for Vec<T> {}
impl<Hash: Encode> Sealed for Digest<Hash> {}
impl<T: BoundedVecValue, S: Get<u32>> Sealed for BoundedVec<T, S> {}
}
impl<T: Encode> StorageAppend<T> for Vec<T> {}
impl<T: Encode> StorageDecodeLength for Vec<T> {}
/// We abuse the fact that SCALE does not put any marker into the encoding, i.e.
/// we only encode the internal vec and we can append to this vec. We have a test that ensures
/// that if the `Digest` format ever changes, we need to remove this here.
/// We abuse the fact that SCALE does not put any marker into the encoding, i.e. we only encode the
/// internal vec and we can append to this vec. We have a test that ensures that if the `Digest`
/// format ever changes, we need to remove this here.
impl<Hash: Encode> StorageAppend<DigestItem<Hash>> for Digest<Hash> {}
#[cfg(test)]