Trait serde::ser::SerializeStructVariant
source · [−]pub trait SerializeStructVariant {
type Ok;
type Error: Error;
fn serialize_field<T: ?Sized>(
&mut self,
key: &'static str,
value: &T
) -> Result<(), Self::Error>
where
T: Serialize;
fn end(self) -> Result<Self::Ok, Self::Error>;
fn skip_field(&mut self, key: &'static str) -> Result<(), Self::Error> { ... }
}
Expand description
Returned from Serializer::serialize_struct_variant
.
Example use
ⓘ
use serde::ser::{Serialize, SerializeStructVariant, Serializer};
enum E {
S { r: u8, g: u8, b: u8 },
}
impl Serialize for E {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
match *self {
E::S {
ref r,
ref g,
ref b,
} => {
let mut sv = serializer.serialize_struct_variant("E", 0, "S", 3)?;
sv.serialize_field("r", r)?;
sv.serialize_field("g", g)?;
sv.serialize_field("b", b)?;
sv.end()
}
}
}
}
Example implementation
The example data format presented on the website demonstrates an
implementation of SerializeStructVariant
for a basic JSON data format.
Associated Types
Required methods
Serialize a struct variant field.