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Fix hygiene of macro-generated local variable accesses in serde(with) wrappers

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This commit is contained in:
David Tolnay
2024-10-22 09:35:52 -07:00
parent 0058c7226e
commit 1e36ef551d
3 changed files with 14 additions and 6 deletions
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serde_derive/src/de.rs
+3 -2
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@@ -2882,13 +2882,14 @@ fn wrap_deserialize_with(
let (de_impl_generics, de_ty_generics, ty_generics, where_clause) =
split_with_de_lifetime(params);
let delife = params.borrowed.de_lifetime();
let deserializer_var = quote!(__deserializer);
// If #deserialize_with returns wrong type, error will be reported here (^^^^^).
// We attach span of the path to the function so it will be reported
// on the #[serde(with = "...")]
// ^^^^^
let value = quote_spanned! {deserialize_with.span()=>
#deserialize_with(__deserializer)?
#deserialize_with(#deserializer_var)?
};
let wrapper = quote! {
#[doc(hidden)]
@@ -2899,7 +2900,7 @@ fn wrap_deserialize_with(
}
impl #de_impl_generics _serde::Deserialize<#delife> for __DeserializeWith #de_ty_generics #where_clause {
fn deserialize<__D>(__deserializer: __D) -> _serde::__private::Result<Self, __D::Error>
fn deserialize<__D>(#deserializer_var: __D) -> _serde::__private::Result<Self, __D::Error>
where
__D: _serde::Deserializer<#delife>,
{