4.6. Possible Future extensions · Here is a list of possible future extensions to REXX which has not been implemented into Regina. Some of these exist in other implementations of REXX, and some of them are just suggestions or ideas thrown around by various people. · Another extension could have been included, but have been left out so far. It is the delay-action, which in standard REXX can be either to ignore or to queue. There is at least one other action that make sense: to replace. That is, when a trap is in state DELAY, and a new condition has been raised, the pending queue is emptied, before the new condition is queued. That way, the new condition will effectively replace any conditions already in the queue. · If there are several new conditions raised while the condition handler is executing (and the trap state is DELAY), only the very last of them is remembered. · It should be possible to set the state for a trap to DELAY, so that any new instances of the condition is handles by the delay- action. As a special case, the SYNTAX condition trap might not be set in state DELAY
PREV NEXT