Hi Dennis, Thanks for the help, that should do the trick!
On 30 Jan 2009, at 11:36, D.Hendriks (Dennis) wrote: > Hello, > > if you try the 'examples/calc/calc.py' example distributed with Ply: > you get something like this: > > $ python calc.py > yacc: Generating LALR parsing table... > calc > 3+4 > 7 > > Now, if you change this line: > > yacc.parse(s) > > into this line: > > yacc.parse(s, debug=2) > > You get: > > $ python calc.py > yacc: Generating LALR parsing table... > calc > 3+4 > state 0 > action 3 > . LexToken(NUMBER,3,1,0) shift > state 3 > state 3 > action -9 > NUMBER . LexToken(+,'+',1,1) reduce 9 > state 6 > action 12 > expression . LexToken(+,'+',1,1) shift > state 12 > state 12 > action 3 > expression + . LexToken(NUMBER,4,1,2) shift > state 3 > state 3 > action -9 > expression + NUMBER . $end reduce 9 > state 18 > action -3 > expression + expression . $end reduce 3 > state 6 > action -2 > expression . $end reduce 2 > 7 > state 4 > action 0 > > So, this way you can see the state of the parser. It's great for > debugging. > > Hope this answers your question. > > Dennis > > > Nuno Lopes wrote: >> >> Hello all, >> >> Is there a way to find out which state we are in? For debugging >> purposes for instance when we are popping a state. >> >> I couldn't find info on this on the website neither on this ml. >> >> Thanks >> -- >> Nuno Lopes >> >> >> > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "ply-hack" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/ply-hack?hl=en -~----------~----~----~----~------~----~------~--~---
