From a528b7dc5646113d157033ceb762768f2b85c3f6 Mon Sep 17 00:00:00 2001
From: thiolliere <gui.thiolliere@gmail.com>
Date: Sat, 24 Aug 2019 17:41:45 +0200
Subject: [PATCH] improve error msg on wrong closure signature (#3467)
---
.../procedural/src/storage/transformation.rs | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/substrate/srml/support/procedural/src/storage/transformation.rs b/substrate/srml/support/procedural/src/storage/transformation.rs
index d378907cb1e..eb479a26648 100644
--- a/substrate/srml/support/procedural/src/storage/transformation.rs
+++ b/substrate/srml/support/procedural/src/storage/transformation.rs
@@ -35,7 +35,7 @@ use syn::{
},
parse_macro_input,
};
-use quote::quote;
+use quote::{quote, quote_spanned};
use super::*;
@@ -417,7 +417,16 @@ fn decl_store_extra_genesis(
}
assimilate_require_generic |= ext::expr_contains_ident(&expr.content, traitinstance);
let content = &expr.content;
- scall = quote!( ( #content ) );
+ scall = quote_spanned! { expr.span() =>
+ let scall: fn(
+ &mut (
+ #scrate::sr_primitives::StorageOverlay,
+ #scrate::sr_primitives::ChildrenStorageOverlay
+ ),
+ &Self
+ ) = #content;
+ scall
+ };
has_scall = true;
},
}
--
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