xform_utils.py

   1 # ScratchABlock - Program analysis and decompilation framework
   2 #
   3 # Copyright (c) 2015-2018 Paul Sokolovsky
   4 #
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
  17
  18 """Transformation helpers and utilities"""
  19
  20 import logging
  21
  22
  23 _log = logging.getLogger(__name__)
  24
  25
  26 # Apply tranformation while it's possible
  27 def apply_iterative(func, args):
  28     cnt = 0
  29     while func(*args):
  30         cnt += 1
  31     _log.info("Ran %s %d times" % (func, cnt))
  32     return cnt
  33
  34
  35 def repr_output(cfg):
  36     """Force detailed repr-style output for EXPRs.
  37
  38     Useful for "#xform:" pragmas in source files.
  39     """
  40     import core
  41     core.SimpleExpr.simple_repr = False