Method Int

go/attribute/attribute.go:59–86

Int declares an attribute of int-typed in Dictionary d.

(name string, value interface{}, doc string, checker func(int) error)

// Int declares an attribute of int-typed in Dictionary d.
func (d Dictionary) Int(name string, value interface{}, doc string, checker func(int) error) Dictionary {
	interfaceChecker := func(value interface{}, name string) error {
		if intValue, ok := value.(int); ok {
			if checker != nil {
				if err := checker(intValue); err != nil {
					return fmt.Errorf("attribute %s error: %s", name, err)
				}
			}
			return nil
		}
		return fmt.Errorf("attribute %s must be of type int, but got %T", name, value)
	}

	if value != nil {
		err := interfaceChecker(value, name)
		if err != nil {
			log.Panicf("default value of attribute %s is invalid, error is: %s", name, err)
		}
	}

	d[name] = &description{
		typ:          intType,
		defaultValue: value,
		doc:          doc,
		checker:      interfaceChecker,
	}
	return d
}

// Float declares an attribute of float32-typed in Dictionary d.
func (d Dictionary) Float(name string, value interface{}, doc string, checker func(float32) error) Dictionary {