einstellung_derive 0.1.6

Proc-Macro crate for einstellung
Documentation 
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---
source: einstellung_derive/src/test.rs
expression: formatted
---
/// --- input ---
#[derive(Config)]
struct TelemetryConfig {
    enabled: bool,
    #[config(subconfig)]
    datadog: Option<DatadogConfig>,
}

/// --- output ---
#[derive(::core::default::Default, ::einstellung::serde::Deserialize)]
#[serde(crate = "::einstellung::serde")]
struct TelemetryConfigPartial {
    enabled: ::core::option::Option<bool>,
    datadog: ::core::option::Option<<DatadogConfig as ::einstellung::Config>::Partial>,
}
#[automatically_derived]
impl ::einstellung::PartialConfig for TelemetryConfigPartial {
    type Complete = TelemetryConfig;
    fn merge(
        self,
        next: Self,
    ) -> ::core::result::Result<Self, ::einstellung::ConfigError> {
        ::core::result::Result::Ok(Self {
            enabled: next.enabled.or(self.enabled),
            datadog: match (self.datadog, next.datadog) {
                (Some(a), Some(b)) => Some(::einstellung::PartialConfig::merge(a, b)?),
                (a, b) => a.or(b),
            },
        })
    }
    fn build(
        self,
    ) -> ::core::result::Result<Self::Complete, ::einstellung::ConfigError> {
        ::core::result::Result::Ok(TelemetryConfig {
            enabled: self
                .enabled
                .ok_or(
                    ::einstellung::ConfigError::MissingField(
                        ::einstellung::FieldPath::new("TelemetryConfig", "enabled"),
                    ),
                )?,
            datadog: self
                .datadog
                .map(|x| ::einstellung::build_with_context(
                    x,
                    "TelemetryConfig",
                    "datadog",
                ))
                .transpose()?,
        })
    }
}
#[automatically_derived]
impl ::einstellung::Config for TelemetryConfig {
    type Partial = TelemetryConfigPartial;
}

// ---------------------------------

/// --- input ---
#[derive(Config)]
struct DatadogConfig {
    api_key: String,
}

/// --- output ---
#[derive(::core::default::Default, ::einstellung::serde::Deserialize)]
#[serde(crate = "::einstellung::serde")]
struct DatadogConfigPartial {
    api_key: ::core::option::Option<String>,
}
#[automatically_derived]
impl ::einstellung::PartialConfig for DatadogConfigPartial {
    type Complete = DatadogConfig;
    fn merge(
        self,
        next: Self,
    ) -> ::core::result::Result<Self, ::einstellung::ConfigError> {
        ::core::result::Result::Ok(Self {
            api_key: next.api_key.or(self.api_key),
        })
    }
    fn build(
        self,
    ) -> ::core::result::Result<Self::Complete, ::einstellung::ConfigError> {
        ::core::result::Result::Ok(DatadogConfig {
            api_key: self
                .api_key
                .ok_or(
                    ::einstellung::ConfigError::MissingField(
                        ::einstellung::FieldPath::new("DatadogConfig", "api_key"),
                    ),
                )?,
        })
    }
}
#[automatically_derived]
impl ::einstellung::Config for DatadogConfig {
    type Partial = DatadogConfigPartial;
}