---
source: einstellung_derive/src/test.rs
expression: formatted
---
/// --- helper ---
fn not_loopback(address: &std::net::IpAddr) -> Result<(), Box<dyn std::error::Error>> {
if address.is_loopback() {
return Err("Address must not be a multicast address".into());
}
Ok(())
}
// ---------------------------------
/// --- input ---
#[derive(Config, Debug)]
struct ListenConfig {
#[config(validate = not_loopback)]
address: std::net::IpAddr,
#[config(default = 443)]
port: u16,
}
/// --- output ---
#[derive(::core::default::Default, ::einstellung::serde::Deserialize)]
#[serde(crate = "::einstellung::serde")]
struct ListenConfigPartial {
address: ::core::option::Option<std::net::IpAddr>,
port: ::core::option::Option<u16>,
}
#[automatically_derived]
impl ::einstellung::PartialConfig for ListenConfigPartial {
type Complete = ListenConfig;
fn merge(
self,
next: Self,
) -> ::core::result::Result<Self, ::einstellung::ConfigError> {
::core::result::Result::Ok(Self {
address: next.address.or(self.address),
port: next.port.or(self.port),
})
}
fn build(
self,
) -> ::core::result::Result<Self::Complete, ::einstellung::ConfigError> {
::core::result::Result::Ok(ListenConfig {
address: {
let address: std::net::IpAddr = self
.address
.ok_or(
::einstellung::ConfigError::MissingField(
::einstellung::FieldPath::new("ListenConfig", "address"),
),
)?;
let _: ::einstellung::ValidationFunction<std::net::IpAddr, _> = not_loopback;
if let Err(e) = (not_loopback)(&address) {
return Err(::einstellung::ConfigError::Validation {
field: ::einstellung::FieldPath::new("ListenConfig", "address"),
#[allow(clippy::useless_conversion)]
reason: e.into(),
});
}
address
},
port: self.port.unwrap_or(443),
})
}
}
#[automatically_derived]
impl ::einstellung::Config for ListenConfig {
type Partial = ListenConfigPartial;
}