| Class | Description |
|---|---|
| ExceptionMessage | A class for error messages produced by the parser system. |
| LocatedMessage | A base class for compilation messages. |
| Message | A base class for compilation messages. |
| SimpleMessage | A base class for compilation messages. |
| SyntaxErrorMessage | A class for error messages produced by the parser system. |
| WarningMessage | A class for warning messages. |