Struct ModuleFn 

pub struct ModuleFn {
    pub name: &'static str,
    pub arity: usize,
    pub optional: bool,
    pub runtime_fn: &'static str,
    pub hint: &'static str,
}

One callable member of a module: its arity, the runtime function a call emits, and the call-shape hint shown in arity diagnostics. arity is the required positional-argument count; optional == true allows exactly one extra trailing argument, so the accepted range is arity..=arity + 1 (an omitted trailing argument reaches the runtime function as Value::None).

Fields

name: &'static str

arity: usize

optional: bool

runtime_fn: &'static str

hint: &'static str

Implementations

impl ModuleFn

pub fn max_arity(&self) -> usize

The largest argument count this member accepts.