Struct Arg 

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

A call argument, including named, spread and by-reference forms.

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<'arena, 'src>>

Argument name in a named argument (PHP 8.0+).

kind: ArgKind<'arena, 'src>

What the argument passes.

span: Span

Source range of this node.

Implementations

impl<'arena, 'src> Arg<'arena, 'src>

pub fn new( name: Option<Name<'arena, 'src>>, kind: ArgKind<'arena, 'src>, 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<'arena, 'src> Arg<'arena, 'src>

pub fn value(&self) -> Option<&Expr<'arena, 'src>>

The argument expression; None for a placeholder.

pub fn value_mut(&mut self) -> Option<&mut Expr<'arena, 'src>>

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<'arena, 'src> Debug for Arg<'arena, 'src>

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

Formats the value using the given formatter.

impl<'arena, 'src> Serialize for Arg<'arena, 'src>

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

where __S: Serializer,

Serialize this value into the given Serde serializer.