/usr/share/pyshared/soya/tofu/sides.py is in python-soya 0.15~rc1-10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | # Sides -- 'side-oriented' programming for Python!
# Copyright (C) 2006 Jean-Baptiste LAMY
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
__all__ = ["side", "has_side", "get_side", "set_side", "Multisided"]
import sys
class Multisided(object): pass
class SidesManager(object):
def __init__(self):
self.current_sides = []
self.funcs = {}
self.func2locals = {}
def Decorator(self, *sides):
def decorator(f, locals = None, orig = None):
if not locals: locals = sys._getframe(1).f_locals
if not orig: orig = f
self.func2locals[orig] = locals, orig.func_name
funcs = self.funcs.get((orig.func_name, id(locals)))
if not funcs: funcs = self.funcs[orig.func_name, id(locals)] = {}
for side in sides:
if not funcs.has_key(side): funcs[side] = []
funcs[side].append(f)
return f
return decorator
def get_side(self): return self.current_sides
def has_side(self, *sides):
for side in sides:
if not side in self.current_sides: return 0
return 1
def set_side(self, *sides):
self.current_sides = sides
self._treat_class(Multisided)
def _tag_sided_method(self, Class):
Class.__multisided_methods__ = {}
for attr, value in Class.__dict__.items():
try: self.func2locals[value]
except: continue
locals, func_name = self.func2locals[value]
Class.__multisided_methods__[attr] = self.funcs[func_name, id(locals)]
def _treat_class(self, Class):
if not Class.__dict__.has_key("__multisided_methods__"): self._tag_sided_method(Class)
for func_name, funcs in Class.__multisided_methods__.items():
fs = [funcs.get(side, ()) for side in self.current_sides]
fs = [j for i in fs for j in i]
if len(fs) == 0:
if Class.__dict__.has_key(func_name): delattr(Class, func_name)
elif len(fs) == 1: f = fs[0] ; setattr(Class, func_name, f)
else: f = self._create_multi_f(fs); setattr(Class, func_name, f)
for ChildClass in Class.__subclasses__(): self._treat_class(ChildClass)
def _create_multi_f(self, fs):
def f(*args, **kargs):
for f1 in fs: r = f1(*args, **kargs)
return r
return f
_side_manager = SidesManager()
get_side = _side_manager.get_side
has_side = _side_manager.has_side
set_side = _side_manager.set_side
side = _side_manager.Decorator
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