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Fixes path issue in derive-impl (#1823)

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Needs https://github.com/sam0x17/macro_magic/pull/13

The associated PR allows the export of tokens from macro_magic at the
specified path. This fixes the path issue in derive-impl. Now, we can
import the default config using the standard rust syntax:

```rust
use frame_system::config_preludes::TestDefaultConfig;

[derive_impl(TestDefaultConfig as frame_system::DefaultConfig)]
impl frame_system::DefaultConfig for Test {
   //....
}
```
This commit is contained in:
gupnik
2023-10-11 07:26:13 +02:00
committed by GitHub
parent 5adcb3e106
commit 294e99831d
4 changed files with 11 additions and 12 deletions
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substrate/frame/examples/default-config/src/lib.rs
+4 -3
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@@ -26,7 +26,7 @@
//! Study the following types:
//!
//! - [`pallet::DefaultConfig`], and how it differs from [`pallet::Config`].
//! - [`pallet::config_preludes::TestDefaultConfig`] and how it implements
//! - [`struct@pallet::config_preludes::TestDefaultConfig`] and how it implements
//! [`pallet::DefaultConfig`].
//! - Notice how [`pallet::DefaultConfig`] is independent of [`frame_system::Config`].
@@ -83,11 +83,12 @@ pub mod pallet {
// This will help use not need to disambiguate anything when using `derive_impl`.
use super::*;
use frame_support::derive_impl;
use frame_system::config_preludes::TestDefaultConfig as SystemTestDefaultConfig;
/// A type providing default configurations for this pallet in testing environment.
pub struct TestDefaultConfig;
#[derive_impl(frame_system::config_preludes::TestDefaultConfig as frame_system::DefaultConfig, no_aggregated_types)]
#[derive_impl(SystemTestDefaultConfig as frame_system::DefaultConfig, no_aggregated_types)]
impl frame_system::DefaultConfig for TestDefaultConfig {}
#[frame_support::register_default_impl(TestDefaultConfig)]
@@ -109,7 +110,7 @@ pub mod pallet {
/// example, we simple derive `frame_system::config_preludes::TestDefaultConfig` again.
pub struct OtherDefaultConfig;
#[derive_impl(frame_system::config_preludes::TestDefaultConfig as frame_system::DefaultConfig, no_aggregated_types)]
#[derive_impl(SystemTestDefaultConfig as frame_system::DefaultConfig, no_aggregated_types)]
impl frame_system::DefaultConfig for OtherDefaultConfig {}
#[frame_support::register_default_impl(OtherDefaultConfig)]