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Introduce bound attribute on enum variants

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This commit is contained in:
David Tolnay
2018-05-08 10:07:17 -07:00
parent b4076f4577
commit be7fe2a5eb
5 changed files with 98 additions and 0 deletions
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serde_derive/src/ser.rs
+4
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@@ -138,6 +138,9 @@ fn build_generics(cont: &Container) -> syn::Generics {
let generics =
bound::with_where_predicates_from_fields(cont, &generics, attr::Field::ser_bound);
let generics =
bound::with_where_predicates_from_variants(cont, &generics, attr::Variant::ser_bound);
match cont.attrs.ser_bound() {
Some(predicates) => bound::with_where_predicates(&generics, predicates),
None => bound::with_bound(
@@ -158,6 +161,7 @@ fn needs_serialize_bound(field: &attr::Field, variant: Option<&attr::Variant>) -
!field.skip_serializing() && field.serialize_with().is_none() && field.ser_bound().is_none()
&& variant.map_or(true, |variant| {
!variant.skip_serializing() && variant.serialize_with().is_none()
&& variant.ser_bound().is_none()
})
}