Trait yasec::Yasec

pub trait Yasec {
    fn init() -> Result<Self, Error>
    where
        Self: Sized,
    { ... }
    fn with_prefix(prefix: impl AsRef<str>) -> Result<Self, Error>
    where
        Self: Sized,
    { ... }
    fn with_context(context: Context<Self>) -> Result<Self, Error>
    where
        Self: Sized,
    { ... }
    fn parse(_val: &str) -> Result<Self, Box<dyn StdError>>
    where
        Self: Sized,
    { ... }
}

Indicates that structure can be initialize from environment variables.

Provided methods

fn init() -> Result<Self, Error> where
    Self: Sized, 

Creates empty context and calls with_context.

fn with_prefix(prefix: impl AsRef<str>) -> Result<Self, Error> where
    Self: Sized, 

fn with_context(context: Context<Self>) -> Result<Self, Error> where
    Self: Sized, 

Initialize structure from environment variable from the passed context. By default calls parse method. It works for a basic type like number or string. The method is redefined for a sctructure with #[derive(Yasec). In that case the method pick every field type and calls the method for the type.

fn parse(_val: &str) -> Result<Self, Box<dyn StdError>> where
    Self: Sized, 

Parses an environment variable value. It sould be implemented if an object is leaf of a configuration structure.

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Implementations on Foreign Types

impl Yasec for char

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

impl Yasec for u8

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

impl Yasec for u16

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

impl Yasec for u32

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

impl Yasec for u64

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

impl Yasec for i8

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

impl Yasec for i16

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

impl Yasec for i32

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

impl Yasec for i64

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

impl Yasec for f32

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

impl Yasec for f64

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

impl Yasec for String

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

impl<T: Yasec> Yasec for Option<T>

fn with_context(context: Context<Self>) -> Result<Self, Error>

fn parse(val: &str) -> Result<Self, Box<dyn StdError>>

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Implementors

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