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return
Statement
In a subrule, the return
statement is of the following form:
return expr;
The value of expr is returned to the rule that invoked this subrule and the subrule execution is finished.
In a pruning rule, the return
statement is of the same form. Here,
expr must be a list a list of the symbols yes
and/or
no
. Each state in the feature structure list, which is the pruning rule
parameter, corresponds to a symbol in the result list. If the symbol is
yes
, the corresponding state is preserved. If the symbol is no
,
the state is abandoned.