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Respect variant skip attribute in inferred bounds

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This commit is contained in:
David Tolnay
2018-05-07 21:30:00 -07:00
parent 8c0efc3d77
commit c4181f46be
3 changed files with 26 additions and 10 deletions
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serde_derive/src/de.rs
+9 -5
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@@ -191,13 +191,17 @@ fn build_generics(cont: &Container, borrowed: &BorrowedLifetimes) -> syn::Generi
}
}
// Fields with a `skip_deserializing` or `deserialize_with` attribute are not
// deserialized by us so we do not generate a bound. Fields with a `bound`
// attribute specify their own bound so we do not generate one. All other fields
// may need a `T: Deserialize` bound where T is the type of the field.
// Fields with a `skip_deserializing` or `deserialize_with` attribute, or which
// belong to a variant with a `skip_deserializing` or `deserialize_with`
// attribute, are not deserialized by us so we do not generate a bound. Fields
// with a `bound` attribute specify their own bound so we do not generate one.
// All other fields may need a `T: Deserialize` bound where T is the type of the
// field.
fn needs_deserialize_bound(field: &attr::Field, variant: Option<&attr::Variant>) -> bool {
!field.skip_deserializing() && field.deserialize_with().is_none() && field.de_bound().is_none()
&& variant.map_or(true, |variant| variant.deserialize_with().is_none())
&& variant.map_or(true, |variant| {
!variant.skip_deserializing() && variant.deserialize_with().is_none()
})
}
// Fields with a `default` attribute (not `default=...`), and fields with a