This repository was archived by the owner on Mar 8, 2023. It is now read-only.
forked from DonJayamanne/pythonVSCode
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathpyscopes.py
More file actions
314 lines (244 loc) · 9.52 KB
/
Copy pathpyscopes.py
File metadata and controls
314 lines (244 loc) · 9.52 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
import rope.base.builtins
import rope.base.codeanalyze
import rope.base.pynames
from rope.base import ast, exceptions, utils
class Scope(object):
def __init__(self, pycore, pyobject, parent_scope):
self.pycore = pycore
self.pyobject = pyobject
self.parent = parent_scope
def get_names(self):
"""Return the names defined or imported in this scope"""
return self.pyobject.get_attributes()
def get_defined_names(self):
"""Return the names defined in this scope"""
return self.pyobject._get_structural_attributes()
def get_name(self, name):
"""Return name `PyName` defined in this scope"""
if name not in self.get_names():
raise exceptions.NameNotFoundError('name %s not found' % name)
return self.get_names()[name]
def __getitem__(self, key):
"""The same as ``get_name(key)``"""
return self.get_name(key)
def __contains__(self, key):
"""The same as ``key in self.get_names()``"""
return key in self.get_names()
@utils.saveit
def get_scopes(self):
"""Return the subscopes of this scope
The returned scopes should be sorted by the order they appear.
"""
return self._create_scopes()
def lookup(self, name):
if name in self.get_names():
return self.get_names()[name]
if self.parent is not None:
return self.parent._propagated_lookup(name)
return None
def get_propagated_names(self):
"""Return the visible names of this scope
Return the names defined in this scope that are visible from
scopes containing this scope. This method returns the same
dictionary returned by `get_names()` except for `ClassScope`
which returns an empty dict.
"""
return self.get_names()
def _propagated_lookup(self, name):
if name in self.get_propagated_names():
return self.get_propagated_names()[name]
if self.parent is not None:
return self.parent._propagated_lookup(name)
return None
def _create_scopes(self):
return [pydefined.get_scope()
for pydefined in self.pyobject._get_defined_objects()]
def _get_global_scope(self):
current = self
while current.parent is not None:
current = current.parent
return current
def get_start(self):
return self.pyobject.get_ast().lineno
def get_body_start(self):
body = self.pyobject.get_ast().body
if body:
return body[0].lineno
return self.get_start()
def get_end(self):
pymodule = self._get_global_scope().pyobject
return pymodule.logical_lines.logical_line_in(self.logical_end)[1]
@utils.saveit
def get_logical_end(self):
global_scope = self._get_global_scope()
return global_scope._scope_finder.find_scope_end(self)
start = property(get_start)
end = property(get_end)
logical_end = property(get_logical_end)
def get_kind(self):
pass
class GlobalScope(Scope):
def __init__(self, pycore, module):
super(GlobalScope, self).__init__(pycore, module, None)
self.names = module._get_concluded_data()
def get_start(self):
return 1
def get_kind(self):
return 'Module'
def get_name(self, name):
try:
return self.pyobject[name]
except exceptions.AttributeNotFoundError:
if name in self.builtin_names:
return self.builtin_names[name]
raise exceptions.NameNotFoundError('name %s not found' % name)
def get_names(self):
if self.names.get() is None:
result = dict(self.builtin_names)
result.update(super(GlobalScope, self).get_names())
self.names.set(result)
return self.names.get()
def get_inner_scope_for_line(self, lineno, indents=None):
return self._scope_finder.get_holding_scope(self, lineno, indents)
def get_inner_scope_for_offset(self, offset):
return self._scope_finder.get_holding_scope_for_offset(self, offset)
@property
@utils.saveit
def _scope_finder(self):
return _HoldingScopeFinder(self.pyobject)
@property
def builtin_names(self):
return rope.base.builtins.builtins.get_attributes()
class FunctionScope(Scope):
def __init__(self, pycore, pyobject, visitor):
super(FunctionScope, self).__init__(pycore, pyobject,
pyobject.parent.get_scope())
self.names = None
self.returned_asts = None
self.is_generator = None
self.defineds = None
self.visitor = visitor
def _get_names(self):
if self.names is None:
self._visit_function()
return self.names
def _visit_function(self):
if self.names is None:
new_visitor = self.visitor(self.pycore, self.pyobject)
for n in ast.get_child_nodes(self.pyobject.get_ast()):
ast.walk(n, new_visitor)
self.names = new_visitor.names
self.names.update(self.pyobject.get_parameters())
self.returned_asts = new_visitor.returned_asts
self.is_generator = new_visitor.generator
self.defineds = new_visitor.defineds
def _get_returned_asts(self):
if self.names is None:
self._visit_function()
return self.returned_asts
def _is_generator(self):
if self.is_generator is None:
self._get_returned_asts()
return self.is_generator
def get_names(self):
return self._get_names()
def _create_scopes(self):
if self.defineds is None:
self._visit_function()
return [pydefined.get_scope() for pydefined in self.defineds]
def get_kind(self):
return 'Function'
def invalidate_data(self):
for pyname in self.get_names().values():
if isinstance(pyname, (rope.base.pynames.AssignedName,
rope.base.pynames.EvaluatedName)):
pyname.invalidate()
class ClassScope(Scope):
def __init__(self, pycore, pyobject):
super(ClassScope, self).__init__(pycore, pyobject,
pyobject.parent.get_scope())
def get_kind(self):
return 'Class'
def get_propagated_names(self):
return {}
class _HoldingScopeFinder(object):
def __init__(self, pymodule):
self.pymodule = pymodule
def get_indents(self, lineno):
return rope.base.codeanalyze.count_line_indents(
self.lines.get_line(lineno))
def _get_scope_indents(self, scope):
return self.get_indents(scope.get_start())
def get_holding_scope(self, module_scope, lineno, line_indents=None):
if line_indents is None:
line_indents = self.get_indents(lineno)
current_scope = module_scope
new_scope = current_scope
while new_scope is not None and \
(new_scope.get_kind() == 'Module' or
self._get_scope_indents(new_scope) <= line_indents):
current_scope = new_scope
if current_scope.get_start() == lineno and \
current_scope.get_kind() != 'Module':
return current_scope
new_scope = None
for scope in current_scope.get_scopes():
if scope.get_start() <= lineno:
if lineno <= scope.get_end():
new_scope = scope
break
else:
break
return current_scope
def _is_empty_line(self, lineno):
line = self.lines.get_line(lineno)
return line.strip() == '' or line.lstrip().startswith('#')
def _get_body_indents(self, scope):
return self.get_indents(scope.get_body_start())
def get_holding_scope_for_offset(self, scope, offset):
return self.get_holding_scope(
scope, self.lines.get_line_number(offset))
def find_scope_end(self, scope):
if not scope.parent:
return self.lines.length()
end = scope.pyobject.get_ast().body[-1].lineno
scope_start = self.pymodule.logical_lines.logical_line_in(scope.start)
if scope_start[1] >= end:
# handling one-liners
body_indents = self._get_scope_indents(scope) + 4
else:
body_indents = self._get_body_indents(scope)
for l in self.logical_lines.generate_starts(
min(end + 1, self.lines.length()), self.lines.length() + 1):
if not self._is_empty_line(l):
if self.get_indents(l) < body_indents:
return end
else:
end = l
return end
@property
def lines(self):
return self.pymodule.lines
@property
def code(self):
return self.pymodule.source_code
@property
def logical_lines(self):
return self.pymodule.logical_lines
class TemporaryScope(Scope):
"""Currently used for list comprehensions and generator expressions
These scopes do not appear in the `get_scopes()` method of their
parent scopes.
"""
def __init__(self, pycore, parent_scope, names):
super(TemporaryScope, self).__init__(
pycore, parent_scope.pyobject, parent_scope)
self.names = names
def get_names(self):
return self.names
def get_defined_names(self):
return self.names
def _create_scopes(self):
return []
def get_kind(self):
return 'Temporary'