Method Call

runtime/vam/expr/function/types.go:89–115

(args ...vector.Any)

}

func (i *Is) Call(args ...vector.Any) vector.Any {
	vec := args[0]
	typeVal := args[1]
	if len(args) == 3 {
		vec = args[1]
		typeVal = args[2]
	}
	if typeVal.Type().ID() != super.IDType {
		return vector.NewWrappedError(i.sctx, "is: type value argument expected", typeVal)
	}
	if _, ok := typeVal.(*vector.Const); ok {
		b := vector.TypeValueValue(typeVal, 0)
		typ, err := i.sctx.LookupByValue(b)
		v := err == nil && typ == vec.Type()
		return vector.NewConstBool(v, vec.Len())
	}
	inTyp := vec.Type()
	out := vector.NewFalse(vec.Len())
	for k := range vec.Len() {
		b := vector.TypeValueValue(typeVal, k)
		typ, err := i.sctx.LookupByValue(b)
		if err == nil && typ == inTyp {
			out.Set(k)
		}
	}
	return out
}

type IsErr struct{}