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 AppConfig {
    app_name: String,
    #[config(subconfig)]
    database: DatabaseConfig,
    #[config(subconfig)]
    redis: RedisConfig,
}

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

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

/// --- input ---
#[derive(Config)]
struct DatabaseConfig {
    url: String,
    pool_size: u32,
}

/// --- output ---
#[derive(::core::default::Default, ::einstellung::serde::Deserialize)]
#[serde(crate = "::einstellung::serde")]
struct DatabaseConfigPartial {
    url: ::core::option::Option<String>,
    pool_size: ::core::option::Option<u32>,
}
#[automatically_derived]
impl ::einstellung::PartialConfig for DatabaseConfigPartial {
    type Complete = DatabaseConfig;
    fn merge(
        self,
        next: Self,
    ) -> ::core::result::Result<Self, ::einstellung::ConfigError> {
        ::core::result::Result::Ok(Self {
            url: next.url.or(self.url),
            pool_size: next.pool_size.or(self.pool_size),
        })
    }
    fn build(
        self,
    ) -> ::core::result::Result<Self::Complete, ::einstellung::ConfigError> {
        ::core::result::Result::Ok(DatabaseConfig {
            url: self
                .url
                .ok_or(
                    ::einstellung::ConfigError::MissingField(
                        ::einstellung::FieldPath::new("DatabaseConfig", "url"),
                    ),
                )?,
            pool_size: self
                .pool_size
                .ok_or(
                    ::einstellung::ConfigError::MissingField(
                        ::einstellung::FieldPath::new("DatabaseConfig", "pool_size"),
                    ),
                )?,
        })
    }
}
#[automatically_derived]
impl ::einstellung::Config for DatabaseConfig {
    type Partial = DatabaseConfigPartial;
}

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

/// --- input ---
#[derive(Config)]
struct RedisConfig {
    cluster_mode: bool,
}

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