The yyparse/yylex interface seems rather strange to me.
After yyparse() accepts an mKR proposition,
yylex() has to give yyparse() an "extra" integer(0) token
to make yyparse() exit
so yyparse() can be called again to accept another proposition.
If yylex() just starts on the next proposition,
yyparse() gives an immediate syntax error and aborts.
When I say "accept", I mean that the action associated with
the proposition rule is executed.
P.S. After accepting an mKR proposition, yystate is &null.
Dick McCullough
Context Knowledge Systems
What is your view?
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