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Pair serialize_with and deserialize_with into one attribute

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This commit is contained in:
David Tolnay 2017-02-14 17:36:50 -08:00
parent 090c8a7049
commit f500db6e91
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GPG Key ID: F9BA143B95FF6D82
2 changed files with 27 additions and 3 deletions
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12
serde_codegen_internals/src/attr.rs
View File

@ -453,6 +453,18 @@ impl Field {
}
}
// Parse `#[serde(with="...")]`
MetaItem(NameValue(ref name, ref lit)) if name == "with" => {
if let Ok(path) = parse_lit_into_path(cx, name.as_ref(), lit) {
let mut ser_path = path.clone();
ser_path.segments.push("serialize".into());
serialize_with.set(ser_path);
let mut de_path = path;
de_path.segments.push("deserialize".into());
deserialize_with.set(de_path);
}
}
// Parse `#[serde(bound="D: Serialize")]`
MetaItem(NameValue(ref name, ref lit)) if name == "bound" => {
if let Ok(where_predicates) =

18
test_suite/tests/test_gen.rs
View File

@ -30,6 +30,14 @@ fn test_gen() {
}
assert::<With<i32>>();
#[derive(Serialize, Deserialize)]
struct WithTogether<T> {
t: T,
#[serde(with="both_x")]
x: X,
}
assert::<WithTogether<i32>>();
#[derive(Serialize, Deserialize)]
struct WithRef<'a, T: 'a> {
#[serde(skip_deserializing)]
@ -307,16 +315,20 @@ trait DeserializeWith: Sized {
}
// Implements neither Serialize nor Deserialize
struct X;
pub struct X;
fn ser_x<S: Serializer>(_: &X, _: S) -> StdResult<S::Ok, S::Error> {
pub fn ser_x<S: Serializer>(_: &X, _: S) -> StdResult<S::Ok, S::Error> {
unimplemented!()
}
fn de_x<D: Deserializer>(_: D) -> StdResult<X, D::Error> {
pub fn de_x<D: Deserializer>(_: D) -> StdResult<X, D::Error> {
unimplemented!()
}
mod both_x {
pub use super::{ser_x as serialize, de_x as deserialize};
}
impl SerializeWith for X {
fn serialize_with<S: Serializer>(_: &Self, _: S) -> StdResult<S::Ok, S::Error> {
unimplemented!()