|
1
|
|
|
from __future__ import absolute_import |
|
2
|
|
|
|
|
3
|
|
|
import atexit |
|
4
|
|
|
import inspect |
|
5
|
|
|
import os |
|
6
|
|
|
from functools import partial |
|
7
|
|
|
|
|
8
|
|
|
from .actions import Action |
|
9
|
|
|
from .actions import CodePrinter |
|
10
|
|
|
from .actions import Debugger |
|
11
|
|
|
from .actions import VarsPrinter |
|
12
|
|
|
|
|
13
|
|
|
try: |
|
14
|
|
|
if os.environ.get("PUREPYTHONHUNTER"): |
|
15
|
|
|
raise ImportError("Skipped") |
|
16
|
|
|
|
|
17
|
|
|
from ._predicates import And as _And |
|
18
|
|
|
from ._predicates import Not |
|
19
|
|
|
from ._predicates import Or as _Or |
|
20
|
|
|
from ._predicates import When |
|
21
|
|
|
from ._predicates import Query |
|
22
|
|
|
from ._tracer import Tracer |
|
23
|
|
|
except ImportError: |
|
24
|
|
|
from .predicates import And as _And |
|
25
|
|
|
from .predicates import Not |
|
26
|
|
|
from .predicates import Or as _Or |
|
27
|
|
|
from .predicates import When |
|
28
|
|
|
from .predicates import Query |
|
29
|
|
|
from .tracer import Tracer |
|
30
|
|
|
|
|
31
|
|
|
__version__ = "0.6.0" |
|
32
|
|
|
__all__ = ( |
|
33
|
|
|
'And', |
|
34
|
|
|
'CodePrinter', |
|
35
|
|
|
'Debugger', |
|
36
|
|
|
'Not', |
|
37
|
|
|
'Or', |
|
38
|
|
|
'Q', |
|
39
|
|
|
'Query', |
|
40
|
|
|
'stop', |
|
41
|
|
|
'trace', |
|
42
|
|
|
'VarsPrinter', |
|
43
|
|
|
'When', |
|
44
|
|
|
) |
|
45
|
|
|
|
|
46
|
|
|
|
|
47
|
|
|
def Q(*predicates, **query): |
|
48
|
|
|
""" |
|
49
|
|
|
Handles situations where :class:`hunter.Query` objects (or other callables) are passed in as positional arguments. |
|
50
|
|
|
Conveniently converts that to an :class:`hunter.Or` predicate. |
|
51
|
|
|
""" |
|
52
|
|
|
optional_actions = query.pop("actions", []) |
|
53
|
|
|
if "action" in query: |
|
54
|
|
|
optional_actions.append(query.pop("action")) |
|
55
|
|
|
|
|
56
|
|
|
if predicates: |
|
57
|
|
|
predicates = tuple( |
|
58
|
|
|
p() if inspect.isclass(p) and issubclass(p, Action) else p |
|
59
|
|
|
for p in predicates |
|
60
|
|
|
) |
|
61
|
|
|
if any(isinstance(p, CodePrinter) for p in predicates): |
|
62
|
|
|
if CodePrinter in optional_actions: |
|
63
|
|
|
optional_actions.remove(CodePrinter) |
|
64
|
|
|
if query: |
|
65
|
|
|
predicates += Query(**query), |
|
66
|
|
|
|
|
67
|
|
|
result = And(*predicates) |
|
68
|
|
|
else: |
|
69
|
|
|
result = Query(**query) |
|
70
|
|
|
|
|
71
|
|
|
if optional_actions: |
|
72
|
|
|
result = When(result, *optional_actions) |
|
73
|
|
|
|
|
74
|
|
|
return result |
|
75
|
|
|
|
|
76
|
|
|
|
|
77
|
|
|
def _flatten(predicate, *predicates, **kwargs): |
|
78
|
|
|
cls = kwargs.pop('cls') |
|
79
|
|
|
if kwargs: |
|
80
|
|
|
raise TypeError("Did not expecte keyword arguments") |
|
81
|
|
|
|
|
82
|
|
|
if not predicates: |
|
83
|
|
|
return predicate |
|
84
|
|
|
else: |
|
85
|
|
|
all_predicates = [] |
|
86
|
|
|
if isinstance(predicate, cls): |
|
87
|
|
|
all_predicates.extend(predicate.predicates) |
|
88
|
|
|
else: |
|
89
|
|
|
all_predicates.append(predicate) |
|
90
|
|
|
|
|
91
|
|
|
for p in predicates: |
|
92
|
|
|
if isinstance(p, cls): |
|
93
|
|
|
all_predicates.extend(p.predicates) |
|
94
|
|
|
else: |
|
95
|
|
|
all_predicates.append(p) |
|
96
|
|
|
return cls(*all_predicates) |
|
97
|
|
|
|
|
98
|
|
|
|
|
99
|
|
|
And = partial(_flatten, cls=_And) |
|
100
|
|
|
Or = partial(_flatten, cls=_Or) |
|
101
|
|
|
|
|
102
|
|
|
_current_tracer = None |
|
103
|
|
|
|
|
104
|
|
|
|
|
105
|
|
|
def stop(): |
|
106
|
|
|
global _current_tracer |
|
107
|
|
|
|
|
108
|
|
|
if _current_tracer is not None: |
|
109
|
|
|
_current_tracer.stop() |
|
110
|
|
|
_current_tracer = None |
|
111
|
|
|
|
|
112
|
|
|
|
|
113
|
|
|
def _prepare_predicate(*predicates, **options): |
|
114
|
|
|
if "action" not in options and "actions" not in options: |
|
115
|
|
|
options["action"] = CodePrinter |
|
116
|
|
|
|
|
117
|
|
|
return Q(*predicates, **options) |
|
118
|
|
|
|
|
119
|
|
|
|
|
120
|
|
|
def trace(*predicates, **options): |
|
121
|
|
|
global _current_tracer |
|
122
|
|
|
|
|
123
|
|
|
predicate = _prepare_predicate(*predicates, **options) |
|
124
|
|
|
clear_env_var = options.pop("clear_env_var", False) |
|
125
|
|
|
|
|
126
|
|
|
if clear_env_var: |
|
127
|
|
|
os.environ.pop("PYTHONHUNTER", None) |
|
128
|
|
|
try: |
|
129
|
|
|
_current_tracer = Tracer() |
|
130
|
|
|
return _current_tracer.trace(predicate) |
|
131
|
|
|
finally: |
|
132
|
|
|
atexit.register(_current_tracer.stop) |
|
133
|
|
|
|
ionelmc /
python-hunter
