Inform PCE's error recovery mechanism that the application takes care of
the indicated error, one of the indicated errors or all errors (@default).
If such an error occurs the method normally fails silently, setting pce<-last_error.
The method pce->catch_pop
restores the catched errors to the state before invoking pce->catch_error.
The prolog predicate pce_catch_error/2
provides an interface:
?- send(@pce, hello, pce).
[PCE error: send: No implementation for: @pce/pce ->hello
in: send(@pce/pce, hello, pce)]
PCE: 1 fail: send(@pce/pce, hello, pce) ?
While
?- pce_catch_error(no_behaviour,
send(@pce, hello, pce)).
No
After which
?- get(@pce, last_error, E). ==> E = no_behaviour
Note that errors with pce<-feedback:
throw can also be handled using Prolog exception-handling.
- See also
- - pce
->catch_pop
- pce->catched
- pce-catched_errors
- class error
