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Inform serializers about skipped fields.

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Closes #960.
This commit is contained in:
Steven Fackler
2017-08-19 10:29:54 -07:00
committed by Steven Fackler
parent d4042872f5
commit 2fe9a860cd
2 changed files with 35 additions and 5 deletions
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serde_derive/src/ser.rs
+23 -5
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@@ -242,6 +242,7 @@ fn serialize_struct(params: &Parameters, fields: &[Field], cattrs: &attr::Contai
params,
false,
quote!(_serde::ser::SerializeStruct::serialize_field),
quote!(_serde::ser::SerializeStruct::skip_field),
);
let type_name = cattrs.name().serialize_name();
@@ -707,15 +708,23 @@ fn serialize_struct_variant<'a>(
fields: &[Field],
name: &str,
) -> Fragment {
let method = match context {
let (method, skip_method) = match context {
StructVariant::ExternallyTagged { .. } => {
quote!(_serde::ser::SerializeStructVariant::serialize_field)
(
quote!(_serde::ser::SerializeStructVariant::serialize_field),
quote!(_serde::ser::SerializeStructVariant::skip_field),
)
}
StructVariant::InternallyTagged { .. } |
StructVariant::Untagged => quote!(_serde::ser::SerializeStruct::serialize_field),
StructVariant::Untagged => {
(
quote!(_serde::ser::SerializeStruct::serialize_field),
quote!(_serde::ser::SerializeStruct::skip_field),
)
}
};
let serialize_fields = serialize_struct_visitor(fields, params, true, method);
let serialize_fields = serialize_struct_visitor(fields, params, true, method, skip_method);
let mut serialized_fields = fields
.iter()
@@ -829,6 +838,7 @@ fn serialize_struct_visitor(
params: &Parameters,
is_enum: bool,
func: Tokens,
skip_func: Tokens,
) -> Vec<Tokens> {
fields
.iter()
@@ -859,7 +869,15 @@ fn serialize_struct_visitor(
match skip {
None => ser,
Some(skip) => quote!(if !#skip { #ser }),
Some(skip) => {
quote! {
if !#skip {
#ser
} else {
try!(#skip_func(&mut __serde_state, #key_expr));
}
}
}
}
},
)