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Introduce storage attr macro #[disable_try_decode_storage] and set it on System::Events and ParachainSystem::HostConfiguration (#3454)

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Closes https://github.com/paritytech/polkadot-sdk/issues/2560

Allows marking storage items with `#[disable_try_decode_storage]`, and
uses it with `System::Events`.

Question: what's the recommended way to write a test for this? I
couldn't find a test for similar existing macro `#[whitelist_storage]`.
This commit is contained in:
Liam Aharon
2024-02-28 13:13:09 +11:00
committed by GitHub
parent 0cc9b9003c
commit 95da658360
8 changed files with 82 additions and 6 deletions
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substrate/frame/support/procedural/src/pallet/expand/storage.rs
+4 -1
View File
@@ -834,7 +834,10 @@ pub fn expand_storages(def: &mut Def) -> proc_macro2::TokenStream {
.storages
.iter()
.filter_map(|storage| {
if storage.cfg_attrs.is_empty() {
// A little hacky; don't generate for cfg gated storages to not get compile errors
// when building "frame-feature-testing" gated storages in the "frame-support-test"
// crate.
if storage.try_decode && storage.cfg_attrs.is_empty() {
let ident = &storage.ident;
let gen = &def.type_use_generics(storage.attr_span);
Some(quote::quote_spanned!(storage.attr_span => #ident<#gen> ))