forked from microsoft/vscode-python
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathrefactor.py
More file actions
397 lines (349 loc) · 11.6 KB
/
Copy pathrefactor.py
File metadata and controls
397 lines (349 loc) · 11.6 KB
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
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
# Arguments are:
# 1. Working directory.
# 2. Rope folder
import difflib
import io
import json
import os
import sys
import traceback
try:
import rope
from rope.base import libutils
from rope.refactor.rename import Rename
from rope.refactor.extract import ExtractMethod, ExtractVariable
import rope.base.project
import rope.base.taskhandle
except:
jsonMessage = {
"error": True,
"message": "Rope not installed",
"traceback": "",
"type": "ModuleNotFoundError",
}
sys.stderr.write(json.dumps(jsonMessage))
sys.stderr.flush()
WORKSPACE_ROOT = sys.argv[1]
ROPE_PROJECT_FOLDER = ".vscode/.ropeproject"
class RefactorProgress:
"""
Refactor progress information
"""
def __init__(self, name="Task Name", message=None, percent=0):
self.name = name
self.message = message
self.percent = percent
class ChangeType:
"""
Change Type Enum
"""
EDIT = 0
NEW = 1
DELETE = 2
class Change:
"""
"""
EDIT = 0
NEW = 1
DELETE = 2
def __init__(self, filePath, fileMode=ChangeType.EDIT, diff=""):
self.filePath = filePath
self.diff = diff
self.fileMode = fileMode
def get_diff(changeset):
"""This is a copy of the code form the ChangeSet.get_description method found in Rope."""
new = changeset.new_contents
old = changeset.old_contents
if old is None:
if changeset.resource.exists():
old = changeset.resource.read()
else:
old = ""
# Ensure code has a trailing empty lines, before generating a diff.
# https://github.com/Microsoft/vscode-python/issues/695.
old_lines = old.splitlines(True)
if not old_lines[-1].endswith("\n"):
old_lines[-1] = old_lines[-1] + os.linesep
new = new + os.linesep
result = difflib.unified_diff(
old_lines,
new.splitlines(True),
"a/" + changeset.resource.path,
"b/" + changeset.resource.path,
)
return "".join(list(result))
class BaseRefactoring(object):
"""
Base class for refactorings
"""
def __init__(self, project, resource, name="Refactor", progressCallback=None):
self._progressCallback = progressCallback
self._handle = rope.base.taskhandle.TaskHandle(name)
self._handle.add_observer(self._update_progress)
self.project = project
self.resource = resource
self.changes = []
def _update_progress(self):
jobset = self._handle.current_jobset()
if jobset and not self._progressCallback is None:
progress = RefactorProgress()
# getting current job set name
if jobset.get_name() is not None:
progress.name = jobset.get_name()
# getting active job name
if jobset.get_active_job_name() is not None:
progress.message = jobset.get_active_job_name()
# adding done percent
percent = jobset.get_percent_done()
if percent is not None:
progress.percent = percent
if not self._progressCallback is None:
self._progressCallback(progress)
def stop(self):
self._handle.stop()
def refactor(self):
try:
self.onRefactor()
except rope.base.exceptions.InterruptedTaskError:
# we can ignore this exception, as user has cancelled refactoring
pass
def onRefactor(self):
"""
To be implemented by each base class
"""
pass
class RenameRefactor(BaseRefactoring):
def __init__(
self,
project,
resource,
name="Rename",
progressCallback=None,
startOffset=None,
newName="new_Name",
):
BaseRefactoring.__init__(self, project, resource, name, progressCallback)
self._newName = newName
self.startOffset = startOffset
def onRefactor(self):
renamed = Rename(self.project, self.resource, self.startOffset)
changes = renamed.get_changes(self._newName, task_handle=self._handle)
for item in changes.changes:
if isinstance(item, rope.base.change.ChangeContents):
self.changes.append(
Change(item.resource.real_path, ChangeType.EDIT, get_diff(item))
)
else:
raise Exception("Unknown Change")
class ExtractVariableRefactor(BaseRefactoring):
def __init__(
self,
project,
resource,
name="Extract Variable",
progressCallback=None,
startOffset=None,
endOffset=None,
newName="new_Name",
similar=False,
global_=False,
):
BaseRefactoring.__init__(self, project, resource, name, progressCallback)
self._newName = newName
self._startOffset = startOffset
self._endOffset = endOffset
self._similar = similar
self._global = global_
def onRefactor(self):
renamed = ExtractVariable(
self.project, self.resource, self._startOffset, self._endOffset
)
changes = renamed.get_changes(self._newName, self._similar, self._global)
for item in changes.changes:
if isinstance(item, rope.base.change.ChangeContents):
self.changes.append(
Change(item.resource.real_path, ChangeType.EDIT, get_diff(item))
)
else:
raise Exception("Unknown Change")
class ExtractMethodRefactor(ExtractVariableRefactor):
def __init__(
self,
project,
resource,
name="Extract Method",
progressCallback=None,
startOffset=None,
endOffset=None,
newName="new_Name",
similar=False,
global_=False,
):
ExtractVariableRefactor.__init__(
self,
project,
resource,
name,
progressCallback,
startOffset=startOffset,
endOffset=endOffset,
newName=newName,
similar=similar,
global_=global_,
)
def onRefactor(self):
renamed = ExtractMethod(
self.project, self.resource, self._startOffset, self._endOffset
)
changes = renamed.get_changes(self._newName, self._similar, self._global)
for item in changes.changes:
if isinstance(item, rope.base.change.ChangeContents):
self.changes.append(
Change(item.resource.real_path, ChangeType.EDIT, get_diff(item))
)
else:
raise Exception("Unknown Change")
class RopeRefactoring(object):
def __init__(self):
self.default_sys_path = sys.path
self._input = io.open(sys.stdin.fileno(), encoding="utf-8")
def _rename(self, filePath, start, newName, indent_size):
"""
Renames a variable
"""
project = rope.base.project.Project(
WORKSPACE_ROOT,
ropefolder=ROPE_PROJECT_FOLDER,
save_history=False,
indent_size=indent_size,
)
resourceToRefactor = libutils.path_to_resource(project, filePath)
refactor = RenameRefactor(
project, resourceToRefactor, startOffset=start, newName=newName
)
refactor.refactor()
changes = refactor.changes
project.close()
valueToReturn = []
for change in changes:
valueToReturn.append({"diff": change.diff})
return valueToReturn
def _extractVariable(self, filePath, start, end, newName, indent_size):
"""
Extracts a variable
"""
project = rope.base.project.Project(
WORKSPACE_ROOT,
ropefolder=ROPE_PROJECT_FOLDER,
save_history=False,
indent_size=indent_size,
)
resourceToRefactor = libutils.path_to_resource(project, filePath)
refactor = ExtractVariableRefactor(
project,
resourceToRefactor,
startOffset=start,
endOffset=end,
newName=newName,
similar=True,
)
refactor.refactor()
changes = refactor.changes
project.close()
valueToReturn = []
for change in changes:
valueToReturn.append({"diff": change.diff})
return valueToReturn
def _extractMethod(self, filePath, start, end, newName, indent_size):
"""
Extracts a method
"""
project = rope.base.project.Project(
WORKSPACE_ROOT,
ropefolder=ROPE_PROJECT_FOLDER,
save_history=False,
indent_size=indent_size,
)
resourceToRefactor = libutils.path_to_resource(project, filePath)
refactor = ExtractMethodRefactor(
project,
resourceToRefactor,
startOffset=start,
endOffset=end,
newName=newName,
similar=True,
)
refactor.refactor()
changes = refactor.changes
project.close()
valueToReturn = []
for change in changes:
valueToReturn.append({"diff": change.diff})
return valueToReturn
def _serialize(self, identifier, results):
"""
Serializes the refactor results
"""
return json.dumps({"id": identifier, "results": results})
def _deserialize(self, request):
"""Deserialize request from VSCode.
Args:
request: String with raw request from VSCode.
Returns:
Python dictionary with request data.
"""
return json.loads(request)
def _process_request(self, request):
"""Accept serialized request from VSCode and write response.
"""
request = self._deserialize(request)
lookup = request.get("lookup", "")
if lookup == "":
pass
elif lookup == "rename":
changes = self._rename(
request["file"],
int(request["start"]),
request["name"],
int(request["indent_size"]),
)
return self._write_response(self._serialize(request["id"], changes))
elif lookup == "extract_variable":
changes = self._extractVariable(
request["file"],
int(request["start"]),
int(request["end"]),
request["name"],
int(request["indent_size"]),
)
return self._write_response(self._serialize(request["id"], changes))
elif lookup == "extract_method":
changes = self._extractMethod(
request["file"],
int(request["start"]),
int(request["end"]),
request["name"],
int(request["indent_size"]),
)
return self._write_response(self._serialize(request["id"], changes))
def _write_response(self, response):
sys.stdout.write(response + "\n")
sys.stdout.flush()
def watch(self):
self._write_response("STARTED")
while True:
try:
self._process_request(self._input.readline())
except:
exc_type, exc_value, exc_tb = sys.exc_info()
tb_info = traceback.extract_tb(exc_tb)
jsonMessage = {
"error": True,
"message": str(exc_value),
"traceback": str(tb_info),
"type": str(exc_type),
}
sys.stderr.write(json.dumps(jsonMessage))
sys.stderr.flush()
if __name__ == "__main__":
RopeRefactoring().watch()