
error_id(+N, ?Message)

   Succeeds if Message unifies with the error message string defined for error
number N.



Arguments
   +N                  Positive integer.
   ?Message            String or variable.

Type
   Event Handling

Description
   This predicate unifies Message with the message string defined for error
   number N.




Resatisfiable
      No.

Fail Conditions
      Fails if Message does not unify with the error message string defined
   for error number N.



Exceptions
     4 --- N is not instantiated.
     5 --- N is instantiated, but not to an integer.
     5 --- Message is instantiated, but not to a string.

Examples
   
Success:
      error_id(80,M).
           (gives M="not a module").
      error_id(70,M).
           (gives M="accessing an undefined dynamic procedure").
      error_id(60,M).
           (gives M="accessing an undefined procedure").
      error_id(90,M).
           (gives M="declaration not at module beginning").

      [eclipse]: [user].
       warning_handler(X, Where) :-
              write('(warning) '),
              error_id(X, Message),
              write(Message),
              write(' in '),
              write(Where).
       user compiled 332 bytes in 0.05 seconds
      [eclipse]: warning_handler(60,dummy).
      (warning) accessing an undefined procedure in dummy
      yes.

      [eclipse]: [user].
       fail_warning(N, Where) :-
               write("Warning: Failure due to "),
               error_id(N, Errmsg),
               write(Errmsg),
               write(":"-Where),
               fail.
       user compiled 328 bytes in 0.00 seconds
      yes.
      [eclipse]: set_event_handler(68, fail_warning/2).
      yes.
      [eclipse]: p.
      Warning: Failure due to calling an undefined procedure: - p
      no.
Fail:
      error_id(60,"procedure not defined").
Error:
      error_id(N,"not a module").        (Error 4).
      error_id(1.0,M).                   (Error 5).
      error_id(1,atom).                  (Error 5).




See Also
   
