Struct TypedParam 

pub struct TypedParam {
    pub name: String,
    pub type_expr: Option<TypeExpr>,
    pub default_value: Option<Box<SNode>>,
}

A parameter with an optional type annotation and optional default value.

Fields

name: String

type_expr: Option<TypeExpr>

default_value: Option<Box<SNode>>

Implementations

impl TypedParam

pub fn untyped(name: impl Into<String>) -> Self

Create an untyped parameter.

pub fn typed(name: impl Into<String>, type_expr: TypeExpr) -> Self

Create a typed parameter.

pub fn names(params: &[TypedParam]) -> Vec<String>

Extract just the names from a list of typed params.

pub fn default_start(params: &[TypedParam]) -> Option<usize>

Return the index of the first parameter with a default value, or None.

Trait Implementations

impl Clone for TypedParam

fn clone(&self) -> TypedParam

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TypedParam

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

Formats the value using the given formatter.

impl PartialEq for TypedParam

fn eq(&self, other: &TypedParam) -> 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 TypedParam