GBBopen 1.5 Reference -- print-instance-slots

print-instance-slots

print-instance-slots

instance stream

[Generic Function]

Purpose
Extend standard-gbbopen-instance printing performed by print-object to include additional slot-value information.

Method signatures

print-instance-slots (instance ksa) stream

print-instance-slots (instance link/nonlink-slot-event) stream

print-instance-slots (instance multiple-instances-event) stream

print-instance-slots (instance single-instance-event) stream

print-instance-slots (instance space-instance-event) stream

print-instance-slots (instance standard-event-instance) stream

print-instance-slots (instance standard-gbbopen-instance) stream

print-instance-slots (instance standard-unit-instance) stream

print-instance-slots :after (instance standard-unit-instance) stream

Package :gbbopen-tools

Module :gbbopen-tools

Arguments and values

instance		A standard-gbbopen-instance object
stream		A stream

Examples
Extend the print-object printing for hyp instances to include location and belief slot values:

  (defmethod print-instance-slots ((obj hyp) stream)
    (call-next-method)
    (when (and (slot-boundp obj 'location)
               (slot-boundp obj 'belief))
      (format stream " ~s ~s"
              (slot-value obj 'location)
              (slot-value obj 'belief))))

or if displaying [Unbound] for unbound slots is desired:

  (defmethod print-instance-slots ((obj hyp) stream)
    (call-next-method)
    (print-instance-slot-value obj 'location stream)
    (print-instance-slot-value obj 'belief stream))

The GBBopen Project

print-instance-slots