Trait AttrValue

pub trait AttrValue:
    Named
    + Sized
    + Serialize
    + DeserializeOwned
    + Send
    + Sync
    + Clone
    + 'static {
    // Required methods
    fn display(&self) -> String;
    fn parse(value: &str) -> Result<Self, Error>;
}

This trait must be implemented by all attribute values. In addition to enforcing the supertrait Named + Sized + Serialize + DeserializeOwned + Send + Sync + Clone, AttrValue requires that the type be representable in “display” format.

AttrValue includes its own display and parse so that behavior can be tailored for attribute purposes specifically, allowing common types like Duration to be used without modification.

This crate includes a derive macro for AttrValue, which uses the type’s std::string::ToString for display, and std::str::FromStr for parsing.

Required Methods

fn display(&self) -> String

Display the value, typically using std::fmt::Display. This is called to show the output in human-readable form.

fn parse(value: &str) -> Result<Self, Error>

Parse a value from a string, typically using std::str::FromStr.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl AttrValue for IpAddr

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for bool

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for f32

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for f64

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for i8

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for i16

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for i32

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for i64

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for i128

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for isize

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for u8

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for u16

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for u32

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for u64

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for u128

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for usize

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for Shape

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for Point

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for String

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for Ipv4Addr

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for Ipv6Addr

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for Duration

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl AttrValue for SystemTime

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

impl<T, E> AttrValue for Range<T>

where T: Named + Display + FromStr<Err = E> + Send + Sync + Serialize + DeserializeOwned + Clone + 'static, E: Into<Error> + Send + Sync + 'static,

fn display(&self) -> String

fn parse(value: &str) -> Result<Self, Error>

Implementors

impl AttrValue for ChannelTransport

impl AttrValue for Encoding

impl AttrValue for ConfigAttr

impl AttrValue for SeqInfo

impl AttrValue for ActorId