Struct FunctionCase 

pub struct FunctionCase {
    pub id: CaseId,
    pub name: Symbol,
    pub args: Arc<dyn Shape>,
    pub result: Option<Arc<dyn Shape>>,
    pub demand: Vec<Demand>,
    pub priority: i32,
    pub implementation: NativeFunctionImpl,
}

One overload case of a FunctionObject: a shape-typed signature paired with the native code that runs when it is selected.

Fields

id: CaseId

Stable identifier for this case within the function.

name: Symbol

Symbol naming the case.

args: Arc<dyn Shape>

Shape the argument list must match for this case to apply.

result: Option<Arc<dyn Shape>>

Optional shape the result is checked against after the call.

demand: Vec<Demand>

Per-argument evaluation demand (how far each argument is forced).

priority: i32

Tie-break priority; higher wins before match score is consulted.

implementation: NativeFunctionImpl

Native code run when this case is selected.

Trait Implementations

impl Clone for FunctionCase

fn clone(&self) -> FunctionCase

Returns a duplicate of the value.

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

Performs copy-assignment from source.