Struct Param 

pub struct Param {
    pub is_self: bool,
    pub name: String,
    pub ty: Option<TypeExpr>,
    pub default: Option<Expr>,
    pub span: Span,
}

one parameter of a function or method. is_self is true only for the self first parameter of a method, which has no declared ty; every other parameter requires a ty. default is the optional = expr default value.

Fields

is_self: bool

true if this is the untyped self first parameter of a method.

name: String

the parameter name ("self" when is_self).

ty: Option<TypeExpr>

the declared type; None only when is_self.

default: Option<Expr>

the = expr default value, or None.

span: Span

the parameter’s source span (name to default, or name to type).

Trait Implementations

impl Clone for Param

fn clone(&self) -> Param

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Param

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

Formats the value using the given formatter.

impl PartialEq for Param

fn eq(&self, other: &Param) -> 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 StructuralPartialEq for Param