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comparison pydershell/pydershell.py @ 10:fb25af17bae6

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Added pydershell.
author Atul Varma <varmaa@toolness.com>
date Sun, 06 Sep 2009 11:12:35 -0700
parents
children 74f27983a350
comparison
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9:0f1545ef023e 10:fb25af17bae6
1 import sys
2 import time
3 import threading
4 import traceback
5 import pydermonkey
6
7 rt = pydermonkey.Runtime()
8 cx = rt.new_context()
9 globalobj = cx.new_object()
10 cx.init_standard_classes(globalobj)
11
12 def foo(cx, this, args):
13 return cx.call_function(this, args[0], ())
14
15 cx.define_property(globalobj,
16 'foo',
17 cx.new_function(foo, 'foo'))
18
19 def jsprint(cx, this, args):
20 if len(args) > 0:
21 print args[0]
22
23 cx.define_property(globalobj,
24 'print',
25 cx.new_function(jsprint, 'print'))
26
27 def opcb(cx):
28 # Don't do anything; if a keyboard interrupt was triggered,
29 # it'll get raised here automatically.
30 pass
31
32 cx.set_operation_callback(opcb)
33
34 class State(object):
35 def __init__(self):
36 self.curr_exc = None
37 self.curr_tb = None
38 self.curr_js_stack = None
39
40 state = State()
41
42 def throwhook(cx):
43 curr_exc = cx.get_pending_exception()
44 if state.curr_exc != curr_exc:
45 state.curr_exc = curr_exc
46 state.py_stack = traceback.extract_stack()
47 state.js_stack = cx.get_stack()
48
49 cx.set_throw_hook(throwhook)
50
51 def watchdog():
52 while 1:
53 time.sleep(0.25)
54 cx.trigger_operation_callback()
55
56 thread = threading.Thread(target=watchdog)
57 thread.setDaemon(True)
58 thread.start()
59
60 filename = 'test.js'
61
62 def make_stack(js_stack):
63 lines = []
64 while js_stack:
65 if js_stack['script']:
66 script = js_stack['script']
67 thing = dict(filename = script.filename,
68 lineno = js_stack['lineno'],
69 name = '<module>')
70 elif js_stack['function'] and not js_stack['function'].is_python:
71 func = js_stack['function']
72 thing = dict(filename = func.filename,
73 lineno = js_stack['lineno'],
74 name = func.name)
75 else:
76 thing = None
77 if thing:
78 lines.insert(0, " File \"%(filename)s\", line %(lineno)d, in %(name)s" % thing)
79 js_stack = js_stack['caller']
80 lines.insert(0, "Traceback (most recent call last):")
81 return '\n'.join(lines)
82
83 try:
84 cx.evaluate_script(globalobj, open(filename).read(), filename, 1)
85 except pydermonkey.error, e:
86 print make_stack(state.js_stack)
87 print e.args[1]