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 Config1 {
    #[config(merge = "extend")]
    x: ::std::collections::HashSet<String>,
}

/// --- output ---
#[derive(::core::default::Default, ::einstellung::serde::Deserialize)]
#[serde(crate = "::einstellung::serde")]
struct Config1Partial {
    x: ::core::option::Option<::std::collections::HashSet<String>>,
}
#[automatically_derived]
impl ::einstellung::PartialConfig for Config1Partial {
    type Complete = Config1;
    fn merge(
        self,
        next: Self,
    ) -> ::core::result::Result<Self, ::einstellung::ConfigError> {
        ::core::result::Result::Ok(Self {
            x: match (self.x, next.x) {
                (Some(mut a), Some(b)) => {
                    ::core::iter::Extend::extend(&mut a, b);
                    Some(a)
                }
                (a, b) => a.or(b),
            },
        })
    }
    fn build(
        self,
    ) -> ::core::result::Result<Self::Complete, ::einstellung::ConfigError> {
        ::core::result::Result::Ok(Config1 {
            x: self
                .x
                .ok_or(
                    ::einstellung::ConfigError::MissingField(
                        ::einstellung::FieldPath::new("Config1", "x"),
                    ),
                )?,
        })
    }
}
#[automatically_derived]
impl ::einstellung::Config for Config1 {
    type Partial = Config1Partial;
}

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

/// --- input ---
#[derive(Config)]
struct Config2 {
    #[config(merge = "extend", default)]
    x: ::std::collections::HashSet<String>,
}

/// --- output ---
#[derive(::core::default::Default, ::einstellung::serde::Deserialize)]
#[serde(crate = "::einstellung::serde")]
struct Config2Partial {
    x: ::core::option::Option<::std::collections::HashSet<String>>,
}
#[automatically_derived]
impl ::einstellung::PartialConfig for Config2Partial {
    type Complete = Config2;
    fn merge(
        self,
        next: Self,
    ) -> ::core::result::Result<Self, ::einstellung::ConfigError> {
        ::core::result::Result::Ok(Self {
            x: match (self.x, next.x) {
                (Some(mut a), Some(b)) => {
                    ::core::iter::Extend::extend(&mut a, b);
                    Some(a)
                }
                (a, b) => a.or(b),
            },
        })
    }
    fn build(
        self,
    ) -> ::core::result::Result<Self::Complete, ::einstellung::ConfigError> {
        ::core::result::Result::Ok(Config2 {
            x: self.x.unwrap_or_else(::core::default::Default::default),
        })
    }
}
#[automatically_derived]
impl ::einstellung::Config for Config2 {
    type Partial = Config2Partial;
}

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

/// --- input ---
#[derive(Config)]
struct Config3 {
    #[config(merge = "extend")]
    x: Option<::std::collections::HashSet<String>>,
}

/// --- output ---
#[derive(::core::default::Default, ::einstellung::serde::Deserialize)]
#[serde(crate = "::einstellung::serde")]
struct Config3Partial {
    x: ::core::option::Option<::std::collections::HashSet<String>>,
}
#[automatically_derived]
impl ::einstellung::PartialConfig for Config3Partial {
    type Complete = Config3;
    fn merge(
        self,
        next: Self,
    ) -> ::core::result::Result<Self, ::einstellung::ConfigError> {
        ::core::result::Result::Ok(Self {
            x: match (self.x, next.x) {
                (Some(mut a), Some(b)) => {
                    ::core::iter::Extend::extend(&mut a, b);
                    Some(a)
                }
                (a, b) => a.or(b),
            },
        })
    }
    fn build(
        self,
    ) -> ::core::result::Result<Self::Complete, ::einstellung::ConfigError> {
        ::core::result::Result::Ok(Config3 { x: self.x })
    }
}
#[automatically_derived]
impl ::einstellung::Config for Config3 {
    type Partial = Config3Partial;
}