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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
| #!/usr/bin/env python
# -*- coding: UTF-8 -*-
#
# class myvar for jlg_47
# http://www.developpez.net/forums/d915461/autres-langages/python-zope/general-python/crash-aleatoire-thread/
# Based on Tkinter variable class
import inspect
import sys
class myvar(object):
_default = ""
def __init__(self, master=None, value=None, name=None, trace=None, mode=None):
if not master:
self._master = self
self._master = master
if value is not None:
self._value=value
else:
self._value=self._default
if trace:
self._trace=trace
else:
self._trace=None
if mode:
self._mode=mode
else:
self._mode=None
self._oldmode=None
self._oldtrace=None
if name:
self._name = name
print inspect.stack()[1][3]
print sys._getframe(1).f_code.co_name
else:
self._name = str(inspect.stack()[1][4]).partition('=myvar(')[0][2:].replace(' ', '').replace('self.', '')
# Oui, c'est moche. Donc TODO mais plus tard.
globals()[self._name] = self
def __str__(self):
return str(self._name)
def set(self, value):
self._value=value
if self._trace is not None and (self._mode == 'u' or self._mode == 'w'):
self.savetrace()
self._oldtrace()
elif self._oldtrace is not None:
self.restauretrace()
def get(self):
if self._trace is not None and (self._mode == 'u' or self._mode == 'r'):
self.savetrace()
self._oldtrace()
elif self._oldtrace is not None:
self.restauretrace()
return self._value
def trace_variable(self, mode, callback):
self._mode=mode
self._trace=callback
trace = trace_variable
def trace_vdelete(self):
self._mode=None
self._trace=None
def trace_vinfo(self):
return self._mode, self._trace
def varinfo(self):
return "Master", self._master, "Name", self._name, "Value", str(self._value), "Trace callback", self._trace, "Trace mode", self._mode
# TODO For callback recursion
def restauretrace(self):
self._trace=self._oldtrace
self._mode=self._oldmode
self._oldtrace=None
self._oldmode=None
def savetrace(self):
self._oldtrace=self._trace
self._oldmode=self._mode
self._trace=None
self._mode=None
if __name__ == "__main__":
a=myvar()
# Set a value
a.set(10)
# trace value
def callback():
b=myvar(name='b')
print 'locals >', locals()
a.trace('u', callback)
a.set(20)
print 'globals >', globals() |
