Ross Boylan <r...@biostat.ucsf.edu> wrote: > As an extension or alternate, could there be a decorator like > @source_line(lineno, filename) > for classes and methods that could do the conversion on the fly? I > don't know if there's a way to go from the function (or class) object > the decorator receives to the AST. > No [easy] way to go from bytecodes back to AST, but I see no reason why you can't create a new code object with your filename and line numbers and then create a new function using your modified code object.
If you don't have a 1:1 correspondence of lines then you'll need to pick out all the existing line numbers from the code object co_lnotab and modify them: see dis.py findlinestarts() for how to do this. Classes would be harder: the decorator doesn't run until after the class body has executed, so you can't change the line numbers that way until it's too late. The only thing I can think would be to put all of the generated code inside a function and fix up that function with a decorator that scans the bytecode to find all contained classes and fix them up. Or you could generate a .pyc file and then fix up line numbers in the whole file: see http://nedbatchelder.com/blog/200804/the_structure_of_pyc_files.html for some code that shows you what's in a .pyc -- Duncan Booth http://kupuguy.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
