Trait devise::FromMeta

pub trait FromMeta {
    fn from_meta(meta: MetaItem<'_>) -> Result<Self, Diagnostic>;

    fn from_attr(name: &str, attr: &Attribute) -> Result<Self, Diagnostic> { ... }
    fn from_attrs(
        name: &str, 
        attrs: &[Attribute]
    ) -> Option<Result<Self, Diagnostic>> { ... }
    fn default() -> Option<Self> { ... }
}

Required methods

fn from_meta(meta: MetaItem<'_>) -> Result<Self, Diagnostic>

Provided methods

fn from_attr(name: &str, attr: &Attribute) -> Result<Self, Diagnostic>

fn from_attrs(
    name: &str,
    attrs: &[Attribute]
) -> Option<Result<Self, Diagnostic>>

fn default() -> Option<Self>

Implementations on Foreign Types

impl FromMeta for usize

pub fn from_meta(meta: MetaItem<'_>) -> Result<usize, Diagnostic>

impl FromMeta for isize

pub fn from_meta(meta: MetaItem<'_>) -> Result<isize, Diagnostic>

impl<T> FromMeta for Option<T> where
    T: FromMeta, 

pub fn from_meta(meta: MetaItem<'_>) -> Result<Option<T>, Diagnostic>

pub fn default() -> Option<Option<T>>

impl FromMeta for bool

pub fn from_meta(meta: MetaItem<'_>) -> Result<bool, Diagnostic>

impl FromMeta for String

pub fn from_meta(meta: MetaItem<'_>) -> Result<String, Diagnostic>

Implementors

impl<T> FromMeta for SpanWrapped<T> where
    T: FromMeta,