Function marshalForMethod

cli/command/formatter/reflect.go:55–71

marshalForMethod returns the map key and the map value for marshalling the method. It returns ("", nil, nil) for valid but non-marshallable parameter. (e.g. "unexportedFunc()")

(typ reflect.Method, val reflect.Value)

// marshalForMethod returns the map key and the map value for marshalling the method.
// It returns ("", nil, nil) for valid but non-marshallable parameter. (e.g. "unexportedFunc()")
func marshalForMethod(typ reflect.Method, val reflect.Value) (string, any, error) {
	if val.Kind() != reflect.Func {
		return "", nil, fmt.Errorf("expected func, got %v", val.Kind())
	}
	name, numIn, numOut := typ.Name, val.Type().NumIn(), val.Type().NumOut()
	_, blackListed := unmarshallableNames[name]
	// FIXME: In text/template, (numOut == 2) is marshallable,
	//        if the type of the second param is error.
	marshallable := unicode.IsUpper(rune(name[0])) && !blackListed &&
		numIn == 0 && numOut == 1
	if !marshallable {
		return "", nil, nil
	}
	result := val.Call(make([]reflect.Value, numIn))
	intf := result[0].Interface()
	return name, intf, nil
}