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improve storage build type checking (#1914)

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* force build closure in decl_storage! to return explicit type
* fix when type was different

Note: it breaks API but it is easy to upgrade: just do the conversion from encode type to the final type yourself in the build closure:

```rust
Encode::using_encoded(&value, |mut value| Decode::decode(&mut v)).unwrap();
```
This commit is contained in:
thiolliere
2019-03-04 10:49:56 +01:00
committed by GitHub
parent a81f7f48a0
commit 66bc864f29
6 changed files with 13 additions and 10 deletions
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substrate/srml/support/procedural/src/storage/transformation.rs
-4
View File
@@ -239,8 +239,6 @@ fn decl_store_extra_genesis(
let storage = (RefCell::new(&mut r), PhantomData::<Self>::default());
let v = (#builder)(&self);
let v = Encode::using_encoded(&v, |mut v| Decode::decode(&mut v))
.expect(#error_message);
<#name<#traitinstance> as #scrate::storage::generator::StorageValue<#typ>>::put(&v, &storage);
}}
},
@@ -252,8 +250,6 @@ fn decl_store_extra_genesis(
let storage = (RefCell::new(&mut r), PhantomData::<Self>::default());
let data = (#builder)(&self);
for (k, v) in data.into_iter() {
let v = Encode::using_encoded(&v, |mut v| Decode::decode(&mut v))
.expect(#error_message);
<#name<#traitinstance> as #scrate::storage::generator::StorageMap<#key_type, #typ>>::insert(&k, &v, &storage);
}
}}