Struct ConstDecl 

pub struct ConstDecl {
    pub name: Ident,
    pub ty: TypeExpr,
    pub value: Box<Expr>,
    pub span: Span,
}

A compile-time constant declaration: const PI: f64 = 3.14159;

Constants must have an explicit type annotation and a value expression that can be evaluated at compile time.

Fields

name: Ident

Constant name.

ty: TypeExpr

Type annotation (required).

value: Box<Expr>

Value expression (must be compile-time evaluable).

span: Span

Source span of the full declaration.

Trait Implementations

impl Clone for ConstDecl

fn clone(&self) -> ConstDecl

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConstDecl

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

Formats the value using the given formatter.