Struct AttributeArg 

pub struct AttributeArg {
    pub name: Option<Ident>,
    pub value: AttributeValue,
    pub span: Span,
}

An attribute argument (named or positional).

Fields

name: Option<Ident>

Argument name (None for positional arguments).

value: AttributeValue

Argument value.

span: Span

Source location.

Implementations

impl AttributeArg

pub fn positional(value: AttributeValue, span: Span) -> AttributeArg

Create a positional argument.

pub fn named(name: Ident, value: AttributeValue, span: Span) -> AttributeArg

Create a named argument.

pub fn is_positional(&self) -> bool

Check if this is a positional argument.

Trait Implementations

impl Clone for AttributeArg

fn clone(&self) -> AttributeArg

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AttributeArg

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AttributeArg

fn deserialize<__D>( __deserializer: __D, ) -> Result<AttributeArg, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for AttributeArg

fn eq(&self, other: &AttributeArg) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for AttributeArg

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for AttributeArg