Trait AttributeExtension 

pub trait AttributeExtension {
    // Required method
    fn get_self(&self) -> &Attribute;

    // Provided methods
    fn parse_comma_args<T: Parse>(&self) -> Result<Vec<T>> { ... }
    fn unfeatured_all(&self) -> Vec<Attribute> { ... }
    fn unfeatured(&self) -> Option<Attribute> { ... }
}

Required Methods

fn get_self(&self) -> &Attribute

Provided Methods

fn parse_comma_args<T: Parse>(&self) -> Result<Vec<T>>

Parse all arguments as comma-separated types.

fn unfeatured_all(&self) -> Vec<Attribute>

Unwrap all inner attributes from a feature-gated cfg_attr. E.g. #[cfg_attr(feature = "x", derive(Debug), codama(...))] returns vec![#[derive(Debug)], #[codama(...)]]. Returns an empty Vec if not a feature-gated cfg_attr.

fn unfeatured(&self) -> Option<Attribute>

Unwrap the feature flag from the attribute. E.g. #[cfg_attr(feature = "some_feature", derive(Debug))] becomes the syn::Attribute defined as #[derive(Debug)]. If the cfg_attr contains multiple inner attributes, returns the first.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl AttributeExtension for Attribute

fn get_self(&self) -> &Attribute

Implementors