Function drainSingle

pointer.go:710–736

drainSingle drains a single level of object or array. The decoder has to guarantee the beginning delim (i.e. '{' or '[') has been consumed.

(dec *json.Decoder)

//
// The decoder has to guarantee the beginning delim (i.e. '{' or '[') has been consumed.
func drainSingle(dec *json.Decoder) error {
	for dec.More() {
		tk, err := dec.Token()
		if err != nil {
			return err
		}
		if delim, isDelim := tk.(json.Delim); isDelim {
			switch delim {
			case '{':
				if err = drainSingle(dec); err != nil {
					return err
				}
			case '[':
				if err = drainSingle(dec); err != nil {
					return err
				}
			}
		}
	}

	// consumes the ending delim
	if _, err := dec.Token(); err != nil {
		return err
	}

	return nil
}

// JSON pointer encoding: ~0 => ~ ~1 => / ... and vice versa.