Struct Arg 

#[non_exhaustive]
pub struct Arg {
    pub name: Option<Name>,
    pub kind: ArgKind,
    pub span: Span,
}

A call argument.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

name: Option<Name>

Name of a named argument.

kind: ArgKind

What the argument passes.

span: Span

Source span.

Implementations

impl Arg

pub fn new(name: Option<Name>, kind: ArgKind, span: Span) -> Self

Builds a Arg from its identifying fields with every other field empty. Set the rest by assignment, as with Param::new.

impl Arg

pub fn value(&self) -> Option<&Expr>

The argument expression; None for a placeholder.

pub fn value_mut(&mut self) -> Option<&mut Expr>

Mutable access to the argument expression; None for a placeholder.

pub fn is_spread(&self) -> bool

Whether the argument is a ... spread (not the ... placeholder).

pub fn is_placeholder(&self) -> bool

Whether the argument is a PHP 8.6 ? or ... placeholder.

Trait Implementations

impl Clone for Arg

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Arg

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

Formats the value using the given formatter.

impl Serialize for Arg

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

where __S: Serializer,

Serialize this value into the given Serde serializer.