[Tutor] Python Control Flow Graph
Brian C. Lum
bclum at cs.ucsd.edu
Tue Mar 21 10:23:26 CET 2006
Dear Python Tutors,
I have been looking for a good way to convert python code into a control
I know of Python functions that will convert an expression into an
abstract syntax tree (i.e. ast = parser.expr('(x+5)*5') then t =
ast.totuple() then t), but I am not sure how to obtain a CFG.
I've gone through the compiler and it has code that converts the AST into
a CFG (described here:
Basically, PyAST_Compile() in Python/compile.c coverts the AST to a CFG
and outputs final bytecode from the CFG by calling two functions:
PySymtable_Build() in Python/symtable.c and compiler_mod() in
Python/compile.c. PySymtable_Build() will build a symtable and
compiler_mod() will create the CFG.
I can try to hack with the compiler, but I was wondering if anyone knew of
any tools already out there or any easier way.
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