Next: Named References, Previous: Semantics, Up: Grammar File [Contents][Index]
Though grammar rules and semantic actions are enough to write a fully functional parser, it can be useful to process some additional information, especially symbol locations.
The way locations are handled is defined by providing a data type, and actions to take when rules are matched.
| • Location Type: | Specifying a data type for locations. | |
| • Actions and Locations: | Using locations in actions. | |
| • Location Default Action: | Defining a general way to compute locations. |