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Proposal: Flatten AllPallets and similar types (#11813)

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* flratten AllPallets types

* feature flag it

* fix

* fix

* fmt

* remove todo

* Update frame/support/src/traits/metadata.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Update frame/support/src/migrations.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* fix

* mark as deprecated

* add docs

* fix ui test?

* fmt

Co-authored-by: parity-processbot <>
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
This commit is contained in:
Kian Paimani
2022-08-14 20:06:02 +01:00
committed by GitHub
parent 6b0203c8c4
commit 2d988e5f60
15 changed files with 122 additions and 109 deletions
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substrate/frame/support/src/traits/metadata.rs
+13 -30
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@@ -18,6 +18,7 @@
//! Traits for managing information attached to pallets and their constituents.
use codec::{Decode, Encode};
use impl_trait_for_tuples::impl_for_tuples;
use sp_runtime::RuntimeDebug;
use sp_std::prelude::*;
@@ -70,40 +71,22 @@ pub trait PalletsInfoAccess {
///
/// You probably don't want this function but `infos()` instead.
fn count() -> usize {
0
// for backwards compatibility with XCM-3, Mark is deprecated.
Self::infos().len()
}
/// Extend the given vector by all of the pallets' information that this type represents.
///
/// You probably don't want this function but `infos()` instead.
fn accumulate(_accumulator: &mut Vec<PalletInfoData>) {}
/// All of the pallets' information that this type represents.
fn infos() -> Vec<PalletInfoData>;
}
#[cfg_attr(all(not(feature = "tuples-96"), not(feature = "tuples-128")), impl_for_tuples(64))]
#[cfg_attr(all(feature = "tuples-96", not(feature = "tuples-128")), impl_for_tuples(96))]
#[cfg_attr(feature = "tuples-128", impl_for_tuples(128))]
impl PalletsInfoAccess for Tuple {
fn infos() -> Vec<PalletInfoData> {
let mut result = Vec::with_capacity(Self::count());
Self::accumulate(&mut result);
result
}
}
impl PalletsInfoAccess for () {}
impl<T: PalletsInfoAccess> PalletsInfoAccess for (T,) {
fn count() -> usize {
T::count()
}
fn accumulate(acc: &mut Vec<PalletInfoData>) {
T::accumulate(acc)
}
}
impl<T1: PalletsInfoAccess, T2: PalletsInfoAccess> PalletsInfoAccess for (T1, T2) {
fn count() -> usize {
T1::count() + T2::count()
}
fn accumulate(acc: &mut Vec<PalletInfoData>) {
// The AllPallets type tuplises the pallets in reverse order, so we unreverse them here.
T2::accumulate(acc);
T1::accumulate(acc);
let mut res = vec![];
for_tuples!( #( res.extend(Tuple::infos()); )* );
res
}
}