format.go
func (f *defaultFormats) Parse(name, data string) (interface{}, error) {
	f.Lock()
	defer f.Unlock()
	nme := f.normalizeName(name)
	for _, v := range f.data {
		if v.Name == nme {
			nw := reflect.New(v.Type).Interface()
			if dec, ok := nw.(encoding.TextUnmarshaler); ok {
				if err := dec.UnmarshalText([]byte(data)); err != nil {
					return nil, err
				}
				return nw, nil
			}
			return nil, errors.InvalidTypeName(name)
		}
	}
	return nil, errors.InvalidTypeName(name)
}
func (f *defaultFormats) Parse(name, data string) (interface{}, error) {
	f.Lock()
	defer f.Unlock()
	nme := f.normalizeName(name)
	for _, v := range f.data {
		if v.Name == nme {
			nw := reflect.New(v.Type).Interface()
			if dec, ok := nw.(encoding.TextUnmarshaler); ok {
				if err := dec.UnmarshalText([]byte(data)); err != nil {
					return nil, err
				}
				return nw, nil
			}
			return nil, errors.InvalidTypeName(name)
		}
	}
	return nil, errors.InvalidTypeName(name)
}
// Parse a string into the appropriate format representation type.
//
// E.g. parsing a string a "date" will return a Date type.