Hi Jan, On 18/08/2011 17:23, Jan Burse wrote: > > > expr(Z) --> "-", !, term(X), {Y is -X}, expr_rest(Y,Z). > expr(Y) --> term(X), expr_rest(X,Y). > > expr_rest(X,T) --> "+", !, term(Y), {Z is X+Y}, expr_rest(Z,T). > expr_rest(X,T) --> "-", !, term(Y), {Z is X-Y}, expr_rest(Z,T). > expr_rest(X,X) --> []. > > etc.. > > And I get the following error: > > uncaught exception in exit_block(-127) > Abort > 127 (-127) is the error number, which is "syntax error : grammar rule body is not valid". The errpr is not properly processed, which is why you see the exit_block instead of the actual error. We will look into fixing this. So the error is because the grammar rule you wrote is not valid for ECLiPSe -- this is because ECLiPSe have proper strings (as an atomic type), so the strings such as "." are real strings, and not list of ASCII code, and this is causing the error. Cheers, Kish -- This e-mail may contain confidential and privileged material for the sole use of the intended recipient. Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive for the recipient), please contact the sender by reply e-mail and delete all copies of this message. Cisco Systems Limited (Company Number: 02558939), is registered in England and Wales with its registered office at 1 Callaghan Square, Cardiff, South Glamorgan CF10 5BT.Received on Fri Aug 19 2011 - 01:59:23 CEST
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