/
rename.py
261 lines (232 loc) · 9.13 KB
/
rename.py
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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
import warnings
from rope.base import (
exceptions,
pyobjects,
pynames,
taskhandle,
evaluate,
worder,
codeanalyze,
libutils,
)
from rope.base.change import ChangeSet, ChangeContents, MoveResource
from rope.refactor import occurrences
class Rename:
"""A class for performing rename refactoring
It can rename everything: classes, functions, modules, packages,
methods, variables and keyword arguments.
"""
def __init__(self, project, resource, offset=None):
"""If `offset` is None, the `resource` itself will be renamed"""
self.project = project
self.resource = resource
if offset is not None:
self.old_name = worder.get_name_at(self.resource, offset)
this_pymodule = self.project.get_pymodule(self.resource)
self.old_instance, self.old_pyname = evaluate.eval_location2(
this_pymodule, offset
)
if self.old_pyname is None:
raise exceptions.RefactoringError(
"Rename refactoring should be performed"
" on resolvable python identifiers."
)
else:
if not resource.is_folder() and resource.name == "__init__.py":
resource = resource.parent
dummy_pymodule = libutils.get_string_module(self.project, "")
self.old_instance = None
self.old_pyname = pynames.ImportedModule(dummy_pymodule, resource=resource)
if resource.is_folder():
self.old_name = resource.name
else:
self.old_name = resource.name[:-3]
def get_old_name(self):
return self.old_name
def get_changes(
self,
new_name,
in_file=None,
in_hierarchy=False,
unsure=None,
docs=False,
resources=None,
task_handle=taskhandle.NullTaskHandle(),
):
"""Get the changes needed for this refactoring
Parameters:
- `in_hierarchy`: when renaming a method this keyword forces
to rename all matching methods in the hierarchy
- `docs`: when `True` rename refactoring will rename
occurrences in comments and strings where the name is
visible. Setting it will make renames faster, too.
- `unsure`: decides what to do about unsure occurrences.
If `None`, they are ignored. Otherwise `unsure` is
called with an instance of `occurrence.Occurrence` as
parameter. If it returns `True`, the occurrence is
considered to be a match.
- `resources` can be a list of `rope.base.resources.File` to
apply this refactoring on. If `None`, the restructuring
will be applied to all python files.
- `in_file`: this argument has been deprecated; use
`resources` instead.
"""
if unsure in (True, False):
warnings.warn(
"unsure parameter should be a function that returns " "True or False",
DeprecationWarning,
stacklevel=2,
)
def unsure_func(value=unsure):
return value
unsure = unsure_func
if in_file is not None:
warnings.warn(
"`in_file` argument has been deprecated; use `resources` " "instead. ",
DeprecationWarning,
stacklevel=2,
)
if in_file:
resources = [self.resource]
if _is_local(self.old_pyname):
resources = [self.resource]
if resources is None:
resources = self.project.get_python_files()
changes = ChangeSet(f"Renaming <{self.old_name}> to <{new_name}>")
finder = occurrences.create_finder(
self.project,
self.old_name,
self.old_pyname,
unsure=unsure,
docs=docs,
instance=self.old_instance,
in_hierarchy=in_hierarchy and self.is_method(),
)
job_set = task_handle.create_jobset("Collecting Changes", len(resources))
for file_ in resources:
job_set.started_job(file_.path)
new_content = rename_in_module(finder, new_name, resource=file_)
if new_content is not None:
changes.add_change(ChangeContents(file_, new_content))
job_set.finished_job()
if self._is_renaming_a_module():
resource = self.old_pyname.get_object().get_resource()
if self._is_allowed_to_move(resources, resource):
self._rename_module(resource, new_name, changes)
return changes
def _is_allowed_to_move(self, resources, resource):
if resource.is_folder():
try:
return resource.get_child("__init__.py") in resources
except exceptions.ResourceNotFoundError:
return False
else:
return resource in resources
def _is_renaming_a_module(self):
return isinstance(self.old_pyname.get_object(), pyobjects.AbstractModule)
def is_method(self):
pyname = self.old_pyname
return (
isinstance(pyname, pynames.DefinedName)
and isinstance(pyname.get_object(), pyobjects.PyFunction)
and isinstance(pyname.get_object().parent, pyobjects.PyClass)
)
def _rename_module(self, resource, new_name, changes):
if not resource.is_folder():
new_name = new_name + ".py"
parent_path = resource.parent.path
if parent_path == "":
new_location = new_name
else:
new_location = parent_path + "/" + new_name
changes.add_change(MoveResource(resource, new_location))
class ChangeOccurrences:
"""A class for changing the occurrences of a name in a scope
This class replaces the occurrences of a name. Note that it only
changes the scope containing the offset passed to the constructor.
What's more it does not have any side-effects. That is for
example changing occurrences of a module does not rename the
module; it merely replaces the occurrences of that module in a
scope with the given expression. This class is useful for
performing many custom refactorings.
"""
def __init__(self, project, resource, offset):
self.project = project
self.resource = resource
self.offset = offset
self.old_name = worder.get_name_at(resource, offset)
self.pymodule = project.get_pymodule(self.resource)
self.old_pyname = evaluate.eval_location(self.pymodule, offset)
def get_old_name(self):
word_finder = worder.Worder(self.resource.read())
return word_finder.get_primary_at(self.offset)
def _get_scope_offset(self):
scope = self.pymodule.get_scope().get_inner_scope_for_offset(self.offset)
return scope.get_region()
def get_changes(self, new_name, only_calls=False, reads=True, writes=True):
changes = ChangeSet(f"Changing <{self.old_name}> occurrences to <{new_name}>")
scope_start, scope_end = self._get_scope_offset()
finder = occurrences.create_finder(
self.project,
self.old_name,
self.old_pyname,
imports=False,
only_calls=only_calls,
)
new_contents = rename_in_module(
finder,
new_name,
pymodule=self.pymodule,
replace_primary=True,
region=(scope_start, scope_end),
reads=reads,
writes=writes,
)
if new_contents is not None:
changes.add_change(ChangeContents(self.resource, new_contents))
return changes
def rename_in_module(
occurrences_finder,
new_name,
resource=None,
pymodule=None,
replace_primary=False,
region=None,
reads=True,
writes=True,
):
"""Returns the changed source or `None` if there is no changes"""
if resource is not None:
source_code = resource.read()
else:
source_code = pymodule.source_code
change_collector = codeanalyze.ChangeCollector(source_code)
for occurrence in occurrences_finder.find_occurrences(resource, pymodule):
if replace_primary and occurrence.is_a_fixed_primary():
continue
if replace_primary:
start, end = occurrence.get_primary_range()
else:
start, end = occurrence.get_word_range()
if (not reads and not occurrence.is_written()) or (
not writes and occurrence.is_written()
):
continue
if region is None or region[0] <= start < region[1]:
change_collector.add_change(start, end, new_name)
return change_collector.get_changed()
def _is_local(pyname):
module, lineno = pyname.get_definition_location()
if lineno is None:
return False
scope = module.get_scope().get_inner_scope_for_line(lineno)
if isinstance(pyname, pynames.DefinedName) and scope.get_kind() in (
"Function",
"Class",
):
scope = scope.parent
return (
scope.get_kind() == "Function"
and pyname in scope.get_names().values()
and isinstance(pyname, pynames.AssignedName)
)