| Name | Description |
|---|---|
| need_more | More input is needed to match the rule |
| mismatch | The rule did not match the input. |
| end_of_range | A rule reached the end of a range |
| leftover | Leftover input remaining after match. |
| invalid | A rule encountered unrecoverable invalid input. |
| out_of_range | An integer overflowed during parsing. |
| syntax | An unspecified syntax error was found. |