Enum BuiltinShape 

pub enum BuiltinShape {
    Fallible,
    Infallible,
    Range,
    Prompt,
}

How a builtin call is emitted and dispatched.

Variants

Fallible

Returns Result at runtime, so the emitted call threads ?/labeled-break and the value-dispatcher arm forwards the Result as-is.

Infallible

Cannot fail: the emitted call is used directly, and the value-dispatcher arm wraps it in Ok.

Range

range: one argument (0..n) or two (a..b), each a fallible range call with the runtime’s two-argument shape.

Prompt

gib: no argument (read a line) or one (a prompt printed first), a fallible call that maps to the runtime’s Option<&Value> prompt shape.

Trait Implementations

impl Clone for BuiltinShape

fn clone(&self) -> BuiltinShape

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BuiltinShape