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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
"""Abstract base classes related to import."""
from . import _bootstrap
from . import machinery
import abc
import types
class Loader(metaclass=abc.ABCMeta):
"""Abstract base class for import loaders."""
@abc.abstractmethod
def load_module(self, fullname:str) -> types.ModuleType:
"""Abstract method which when implemented should load a module."""
raise NotImplementedError
class Finder(metaclass=abc.ABCMeta):
"""Abstract base class for import finders."""
@abc.abstractmethod
def find_module(self, fullname:str, path:[str]=None) -> Loader:
"""Abstract method which when implemented should find a module."""
raise NotImplementedError
Finder.register(machinery.BuiltinImporter)
Finder.register(machinery.FrozenImporter)
Finder.register(machinery.PathFinder)
class ResourceLoader(Loader):
"""Abstract base class for loaders which can return data from their
back-end storage.
This ABC represents one of the optional protocols specified by PEP 302.
"""
@abc.abstractmethod
def get_data(self, path:str) -> bytes:
"""Abstract method which when implemented should return the bytes for
the specified path."""
raise NotImplementedError
class InspectLoader(Loader):
"""Abstract base class for loaders which support inspection about the
modules they can load.
This ABC represents one of the optional protocols specified by PEP 302.
"""
@abc.abstractmethod
def is_package(self, fullname:str) -> bool:
"""Abstract method which when implemented should return whether the
module is a package."""
return NotImplementedError
@abc.abstractmethod
def get_code(self, fullname:str) -> types.CodeType:
"""Abstract method which when implemented should return the code object
for the module"""
return NotImplementedError
@abc.abstractmethod
def get_source(self, fullname:str) -> str:
"""Abstract method which should return the source code for the
module."""
return NotImplementedError
InspectLoader.register(machinery.BuiltinImporter)
InspectLoader.register(machinery.FrozenImporter)
class PyLoader(_bootstrap.PyLoader, InspectLoader):
"""Abstract base class to assist in loading source code by requiring only
back-end storage methods to be implemented.
The methods get_code, get_source, and load_module are implemented for the
user.
"""
@abc.abstractmethod
def source_path(self, fullname:str) -> object:
"""Abstract method which when implemented should return the path to the
sourced code for the module."""
raise NotImplementedError
class PyPycLoader(_bootstrap.PyPycLoader, PyLoader):
"""Abstract base class to assist in loading source and bytecode by
requiring only back-end storage methods to be implemented.
The methods get_code, get_source, and load_module are implemented for the
user.
"""
@abc.abstractmethod
def source_mtime(self, fullname:str) -> int:
"""Abstract method which when implemented should return the
modification time for the source of the module."""
raise NotImplementedError
@abc.abstractmethod
def bytecode_path(self, fullname:str) -> object:
"""Abstract method which when implemented should return the path to the
bytecode for the module."""
raise NotImplementedError
@abc.abstractmethod
def write_bytecode(self, fullname:str, bytecode:bytes):
"""Abstract method which when implemented should attempt to write the
bytecode for the module."""
raise NotImplementedError
|
