"F. GEIGER" <[EMAIL PROTECTED]> writes: > But when loops enter the game, things seem to become more difficult: > > A=12 > B=23 > C=45 > D=56 > DX=0 > > FOR C # Exec the following lines C times > G X=A+DX Y=B Z=34 # Move to X, Y, Z > > # more statements... > > DX=DX+67 > NEXT > > How can I tell PLY to go back to the beginning of the FOR-loop's > body to execute it C-1 more times? A syntax checker would not need > to do that, but an interpreter (which actually I am building) has > to.
Typically, you would separate parsing from executing the code. Use PLY to parse the whole thing once and produce a data structure representing the code (usually called an 'abstract syntax tree') then write an interpreter which uses that tree as its input. Regards, -- Edwin -- http://mail.python.org/mailman/listinfo/python-list
