#[derive(Clone, Debug, Default, PartialEq)]
pub struct Preconditions {
pub uid: Option<String>,
}
impl<'de> serde::Deserialize<'de> for Preconditions {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: serde::Deserializer<'de> {
#[allow(non_camel_case_types)]
enum Field {
Key_uid,
Other,
}
impl<'de> serde::Deserialize<'de> for Field {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: serde::Deserializer<'de> {
struct Visitor;
impl<'de> serde::de::Visitor<'de> for Visitor {
type Value = Field;
fn expecting(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "field identifier")
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E> where E: serde::de::Error {
Ok(match v {
"uid" => Field::Key_uid,
_ => Field::Other,
})
}
}
deserializer.deserialize_identifier(Visitor)
}
}
struct Visitor;
impl<'de> serde::de::Visitor<'de> for Visitor {
type Value = Preconditions;
fn expecting(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "struct Preconditions")
}
fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error> where A: serde::de::MapAccess<'de> {
let mut value_uid: Option<String> = None;
while let Some(key) = serde::de::MapAccess::next_key::<Field>(&mut map)? {
match key {
Field::Key_uid => value_uid = serde::de::MapAccess::next_value(&mut map)?,
Field::Other => { let _: serde::de::IgnoredAny = serde::de::MapAccess::next_value(&mut map)?; },
}
}
Ok(Preconditions {
uid: value_uid,
})
}
}
deserializer.deserialize_struct(
"Preconditions",
&[
"uid",
],
Visitor,
)
}
}
impl serde::Serialize for Preconditions {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: serde::Serializer {
let mut state = serializer.serialize_struct(
"Preconditions",
self.uid.as_ref().map_or(0, |_| 1),
)?;
if let Some(value) = &self.uid {
serde::ser::SerializeStruct::serialize_field(&mut state, "uid", value)?;
}
serde::ser::SerializeStruct::end(state)
}
}