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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
Download Patch File Download Diff File Expand all files Collapse all files
substrate/frame/support/procedural/src/construct_runtime/mod.rs
+21 -39
View File
@@ -308,47 +308,26 @@ fn decl_all_pallets<'a>(
names.push(&pallet_declaration.name);
}
// Make nested tuple structure like:
// `((FirstPallet, (SecondPallet, ( ... , LastPallet) ... ))))`
// But ignore the system pallet.
let all_pallets_without_system = names
.iter()
.filter(|n| **n != SYSTEM_PALLET_NAME)
.rev()
.fold(TokenStream2::default(), |combined, name| quote!((#name, #combined)));
// Make nested tuple structure like:
// `((FirstPallet, (SecondPallet, ( ... , LastPallet) ... ))))`
let all_pallets_with_system = names
.iter()
.rev()
.fold(TokenStream2::default(), |combined, name| quote!((#name, #combined)));
// Make nested tuple structure like:
// `((LastPallet, (SecondLastPallet, ( ... , FirstPallet) ... ))))`
// But ignore the system pallet.
let all_pallets_without_system_reversed = names
.iter()
.filter(|n| **n != SYSTEM_PALLET_NAME)
.fold(TokenStream2::default(), |combined, name| quote!((#name, #combined)));
// Make nested tuple structure like:
// `((LastPallet, (SecondLastPallet, ( ... , FirstPallet) ... ))))`
let all_pallets_with_system_reversed = names
.iter()
.fold(TokenStream2::default(), |combined, name| quote!((#name, #combined)));
let system_pallet = match names.iter().find(|n| **n == SYSTEM_PALLET_NAME) {
Some(name) => name,
None =>
return syn::Error::new(
proc_macro2::Span::call_site(),
"`System` pallet declaration is missing. \
Please add this line: `System: frame_system::{Pallet, Call, Storage, Config, Event<T>},`",
Please add this line: `System: frame_system::{Pallet, Call, Storage, Config, Event<T>},`",
)
.into_compile_error(),
};
let names_without_system =
names.iter().filter(|n| **n != SYSTEM_PALLET_NAME).collect::<Vec<_>>();
let names_reversed = names.clone().into_iter().rev().collect::<Vec<_>>();
let names_without_system_reverse =
names_without_system.clone().into_iter().rev().collect::<Vec<_>>();
let names_reversed_with_system_first = std::iter::once(system_pallet)
.chain(names_without_system_reverse.clone().into_iter())
.collect::<Vec<_>>();
quote!(
#types
@@ -364,25 +343,28 @@ fn decl_all_pallets<'a>(
pub type AllPallets = AllPalletsWithSystem;
/// All pallets included in the runtime as a nested tuple of types.
pub type AllPalletsWithSystem = ( #all_pallets_with_system );
pub type AllPalletsWithSystem = ( #(#names),* );
/// All pallets included in the runtime as a nested tuple of types.
/// Excludes the System pallet.
pub type AllPalletsWithoutSystem = ( #all_pallets_without_system );
pub type AllPalletsWithoutSystem = ( #(#names_without_system),* );
/// All pallets included in the runtime as a nested tuple of types in reversed order.
/// Excludes the System pallet.
pub type AllPalletsWithoutSystemReversed = ( #all_pallets_without_system_reversed );
#[deprecated(note = "Using reverse pallet orders is deprecated. use only \
`AllPalletWithSystem or AllPalletsWithoutSystem`")]
pub type AllPalletsWithoutSystemReversed =( #(#names_without_system_reverse),* );
/// All pallets included in the runtime as a nested tuple of types in reversed order.
pub type AllPalletsWithSystemReversed = ( #all_pallets_with_system_reversed );
#[deprecated(note = "Using reverse pallet orders is deprecated. use only \
`AllPalletWithSystem or AllPalletsWithoutSystem`")]
pub type AllPalletsWithSystemReversed = ( #(#names_reversed),* );
/// All pallets included in the runtime as a nested tuple of types in reversed order.
/// With the system pallet first.
pub type AllPalletsReversedWithSystemFirst = (
#system_pallet,
AllPalletsWithoutSystemReversed
);
#[deprecated(note = "Using reverse pallet orders is deprecated. use only \
`AllPalletWithSystem or AllPalletsWithoutSystem`")]
pub type AllPalletsReversedWithSystemFirst = ( #(#names_reversed_with_system_first),* );
)
}