forked from rocky/python-uncompyle6
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathmake_function.py
More file actions
580 lines (499 loc) · 18.1 KB
/
make_function.py
File metadata and controls
580 lines (499 loc) · 18.1 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
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
# Copyright (c) 2015, 2016 by Rocky Bernstein
# Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
"""
All the crazy things we have to do to handle Python functions
"""
from xdis.code import iscode
from uncompyle6.scanner import Code
from uncompyle6.parsers.astnode import AST
from uncompyle6 import PYTHON3
from uncompyle6.semantics.parser_error import ParserError
from uncompyle6.semantics.helper import print_docstring
if PYTHON3:
from itertools import zip_longest
else:
from itertools import izip_longest as zip_longest
from uncompyle6.show import maybe_show_ast_param_default
def find_all_globals(node, globs):
"""Find globals in this statement."""
for n in node:
if isinstance(n, AST):
globs = find_all_globals(n, globs)
elif n.type in ('STORE_GLOBAL', 'DELETE_GLOBAL', 'LOAD_GLOBAL'):
globs.add(n.pattr)
return globs
def find_globals(node, globs):
"""Find globals in this statement."""
for n in node:
if isinstance(n, AST):
globs = find_globals(n, globs)
elif n.type in ('STORE_GLOBAL', 'DELETE_GLOBAL'):
globs.add(n.pattr)
return globs
def find_none(node):
for n in node:
if isinstance(n, AST):
if n not in ('return_stmt', 'return_if_stmt'):
if find_none(n):
return True
elif n.type == 'LOAD_CONST' and n.pattr is None:
return True
return False
# FIXME: DRY the below code...
def make_function3_annotate(self, node, isLambda, nested=1,
codeNode=None, annotate_last=-1):
"""
Dump function defintion, doc string, and function
body. This code is specialized for Python 3"""
def build_param(ast, name, default):
"""build parameters:
- handle defaults
- handle format tuple parameters
"""
if default:
value = self.traverse(default, indent='')
maybe_show_ast_param_default(self.showast, name, value)
result = '%s=%s' % (name, value)
if result[-2:] == '= ': # default was 'LOAD_CONST None'
result += 'None'
return result
else:
return name
# MAKE_FUNCTION_... or MAKE_CLOSURE_...
assert node[-1].type.startswith('MAKE_')
annotate_tuple = None
for annotate_last in range(len(node)-1, -1, -1):
if node[annotate_last] == 'annotate_tuple':
annotate_tuple = node[annotate_last]
break
annotate_args = {}
if (annotate_tuple == 'annotate_tuple'
and annotate_tuple[0] in ('LOAD_CONST', 'LOAD_NAME')
and isinstance(annotate_tuple[0].attr, tuple)):
annotate_tup = annotate_tuple[0].attr
i = -1
j = annotate_last-1
l = -len(node)
while j >= l and node[j].type in ('annotate_arg' 'annotate_tuple'):
annotate_args[annotate_tup[i]] = (node[j][0].attr,
node[j][0] == 'LOAD_CONST')
i -= 1
j -= 1
args_node = node[-1]
if isinstance(args_node.attr, tuple):
# positional args are before kwargs
defparams = node[:args_node.attr[0]]
pos_args, kw_args, annotate_argc = args_node.attr
else:
defparams = node[:args_node.attr]
kw_args = 0
pass
if 3.0 <= self.version <= 3.2:
lambda_index = -2
elif 3.03 <= self.version:
lambda_index = -3
else:
lambda_index = None
if lambda_index and isLambda and iscode(node[lambda_index].attr):
assert node[lambda_index].type == 'LOAD_LAMBDA'
code = node[lambda_index].attr
else:
code = codeNode.attr
assert iscode(code)
code = Code(code, self.scanner, self.currentclass)
# add defaults values to parameter names
argc = code.co_argcount
paramnames = list(code.co_varnames[:argc])
try:
ast = self.build_ast(code._tokens,
code._customize,
isLambda = isLambda,
noneInNames = ('None' in code.co_names))
except ParserError as p:
self.write(str(p))
self.ERROR = p
return
kw_pairs = args_node.attr[1]
indent = self.indent
if isLambda:
self.write("lambda ")
else:
self.write("(")
last_line = self.f.getvalue().split("\n")[-1]
l = len(last_line)
indent = ' ' * l
line_number = self.line_number
if 4 & code.co_flags: # flag 2 -> variable number of args
self.write('*%s' % code.co_varnames[argc + kw_pairs])
argc += 1
i = len(paramnames) - len(defparams)
suffix = ''
for param in paramnames[:i]:
self.write(suffix, param)
suffix = ', '
if param in annotate_tuple[0].attr:
p = annotate_tuple[0].attr.index(param)
self.write(': ')
self.preorder(node[p])
if (line_number != self.line_number):
suffix = ",\n" + indent
line_number = self.line_number
# value, string = annotate_args[param]
# if string:
# self.write(': "%s"' % value)
# else:
# self.write(': %s' % value)
suffix = ', ' if i > 0 else ''
for n in node:
if n == 'pos_arg':
self.write(suffix)
param = paramnames[i]
self.write(param)
if param in annotate_args:
aa = annotate_args[param]
if isinstance(aa, tuple):
aa = aa[0]
self.write(': "%s"' % aa)
self.write('=')
i += 1
self.preorder(n)
if (line_number != self.line_number):
suffix = ",\n" + indent
line_number = self.line_number
else:
suffix = ', '
# self.println(indent, '#flags:\t', int(code.co_flags))
if kw_args > 0:
if not (4 & code.co_flags):
if argc > 0:
self.write(", *, ")
else:
self.write("*, ")
pass
else:
self.write(", ")
kwargs = node[0]
last = len(kwargs)-1
i = 0
for n in node[0]:
if n == 'kwarg':
if (line_number != self.line_number):
self.write("\n" + indent)
line_number = self.line_number
self.write('%s=' % n[0].pattr)
self.preorder(n[1])
if i < last:
self.write(', ')
i += 1
pass
pass
pass
if 8 & code.co_flags: # flag 3 -> keyword args
if argc > 0:
self.write(', ')
self.write('**%s' % code.co_varnames[argc + kw_pairs])
if isLambda:
self.write(": ")
else:
self.write(')')
if 'return' in annotate_tuple[0].attr:
if (line_number != self.line_number):
self.write("\n" + indent)
line_number = self.line_number
self.write(' -> ')
# value, string = annotate_args['return']
# if string:
# self.write(' -> "%s"' % value)
# else:
# self.write(' -> %s' % value)
self.preorder(node[annotate_last-1])
self.println(":")
if (len(code.co_consts) > 0 and
code.co_consts[0] is not None and not isLambda): # ugly
# docstring exists, dump it
print_docstring(self, self.indent, code.co_consts[0])
code._tokens = None # save memory
assert ast == 'stmts'
all_globals = find_all_globals(ast, set())
for g in ((all_globals & self.mod_globs) | find_globals(ast, set())):
self.println(self.indent, 'global ', g)
self.mod_globs -= all_globals
has_none = 'None' in code.co_names
rn = has_none and not find_none(ast)
self.gen_source(ast, code.co_name, code._customize, isLambda=isLambda,
returnNone=rn)
code._tokens = code._customize = None # save memory
def make_function2(self, node, isLambda, nested=1, codeNode=None):
"""
Dump function defintion, doc string, and function body.
This code is specialied for Python 2.
"""
# FIXME: call make_function3 if we are self.version >= 3.0
# and then simplify the below.
def build_param(ast, name, default):
"""build parameters:
- handle defaults
- handle format tuple parameters
"""
# if formal parameter is a tuple, the paramater name
# starts with a dot (eg. '.1', '.2')
if name.startswith('.'):
# replace the name with the tuple-string
name = self.get_tuple_parameter(ast, name)
pass
if default:
value = self.traverse(default, indent='')
maybe_show_ast_param_default(self.showast, name, value)
result = '%s=%s' % (name, value)
if result[-2:] == '= ': # default was 'LOAD_CONST None'
result += 'None'
return result
else:
return name
# MAKE_FUNCTION_... or MAKE_CLOSURE_...
assert node[-1].type.startswith('MAKE_')
args_node = node[-1]
if isinstance(args_node.attr, tuple):
# positional args are after kwargs
defparams = node[1:args_node.attr[0]+1]
pos_args, kw_args, annotate_argc = args_node.attr
else:
defparams = node[:args_node.attr]
kw_args = 0
pass
lambda_index = None
if lambda_index and isLambda and iscode(node[lambda_index].attr):
assert node[lambda_index].type == 'LOAD_LAMBDA'
code = node[lambda_index].attr
else:
code = codeNode.attr
assert iscode(code)
code = Code(code, self.scanner, self.currentclass)
# add defaults values to parameter names
argc = code.co_argcount
paramnames = list(code.co_varnames[:argc])
# defaults are for last n parameters, thus reverse
paramnames.reverse(); defparams.reverse()
try:
ast = self.build_ast(code._tokens,
code._customize,
isLambda = isLambda,
noneInNames = ('None' in code.co_names))
except ParserError as p:
self.write(str(p))
self.ERROR = p
return
kw_pairs = args_node.attr[1] if self.version >= 3.0 else 0
indent = self.indent
# build parameters
params = [build_param(ast, name, default) for
name, default in zip_longest(paramnames, defparams, fillvalue=None)]
params.reverse() # back to correct order
if 4 & code.co_flags: # flag 2 -> variable number of args
params.append('*%s' % code.co_varnames[argc])
argc += 1
# dump parameter list (with default values)
if isLambda:
self.write("lambda ", ", ".join(params))
else:
self.write("(", ", ".join(params))
if kw_args > 0:
if not (4 & code.co_flags):
if argc > 0:
self.write(", *, ")
else:
self.write("*, ")
pass
else:
self.write(", ")
for n in node:
if n == 'pos_arg':
continue
else:
self.preorder(n)
break
pass
if 8 & code.co_flags: # flag 3 -> keyword args
if argc > 0:
self.write(', ')
self.write('**%s' % code.co_varnames[argc + kw_pairs])
if isLambda:
self.write(": ")
else:
self.println("):")
if len(code.co_consts) > 0 and code.co_consts[0] is not None and not isLambda: # ugly
# docstring exists, dump it
print_docstring(self, indent, code.co_consts[0])
code._tokens = None # save memory
assert ast == 'stmts'
all_globals = find_all_globals(ast, set())
for g in ((all_globals & self.mod_globs) | find_globals(ast, set())):
self.println(self.indent, 'global ', g)
self.mod_globs -= all_globals
has_none = 'None' in code.co_names
rn = has_none and not find_none(ast)
self.gen_source(ast, code.co_name, code._customize, isLambda=isLambda,
returnNone=rn)
code._tokens = None; code._customize = None # save memory
def make_function3(self, node, isLambda, nested=1, codeNode=None):
"""Dump function definition, doc string, and function body."""
# FIXME: call make_function3 if we are self.version >= 3.0
# and then simplify the below.
def build_param(ast, name, default):
"""build parameters:
- handle defaults
- handle format tuple parameters
"""
if default:
value = self.traverse(default, indent='')
maybe_show_ast_param_default(self.showast, name, value)
result = '%s=%s' % (name, value)
if result[-2:] == '= ': # default was 'LOAD_CONST None'
result += 'None'
return result
else:
return name
# MAKE_FUNCTION_... or MAKE_CLOSURE_...
assert node[-1].type.startswith('MAKE_')
args_node = node[-1]
if isinstance(args_node.attr, tuple):
if self.version <= 3.3 and len(node) > 2 and node[-3] != 'LOAD_LAMBDA':
# positional args are after kwargs
defparams = node[1:args_node.attr[0]+1]
else:
# positional args are before kwargs
defparams = node[:args_node.attr[0]]
pos_args, kw_args, annotate_argc = args_node.attr
else:
defparams = node[:args_node.attr]
kw_args = 0
pass
if 3.0 <= self.version <= 3.2:
lambda_index = -2
elif 3.03 <= self.version:
lambda_index = -3
else:
lambda_index = None
if lambda_index and isLambda and iscode(node[lambda_index].attr):
assert node[lambda_index].type == 'LOAD_LAMBDA'
code = node[lambda_index].attr
else:
code = codeNode.attr
assert iscode(code)
code = Code(code, self.scanner, self.currentclass)
# add defaults values to parameter names
argc = code.co_argcount
paramnames = list(code.co_varnames[:argc])
# defaults are for last n parameters, thus reverse
if not 3.0 <= self.version <= 3.2:
paramnames.reverse(); defparams.reverse()
try:
ast = self.build_ast(code._tokens,
code._customize,
isLambda = isLambda,
noneInNames = ('None' in code.co_names))
except ParserError as p:
self.write(str(p))
self.ERROR = p
return
kw_pairs = args_node.attr[1] if self.version >= 3.0 else 0
indent = self.indent
# build parameters
if self.version != 3.2:
params = [build_param(ast, name, default) for
name, default in zip_longest(paramnames, defparams, fillvalue=None)]
params.reverse() # back to correct order
if 4 & code.co_flags: # flag 2 -> variable number of args
if self.version > 3.0:
params.append('*%s' % code.co_varnames[argc + kw_pairs])
else:
params.append('*%s' % code.co_varnames[argc])
argc += 1
# dump parameter list (with default values)
if isLambda:
self.write("lambda ", ", ".join(params))
else:
self.write("(", ", ".join(params))
# self.println(indent, '#flags:\t', int(code.co_flags))
else:
if isLambda:
self.write("lambda ")
else:
self.write("(")
pass
last_line = self.f.getvalue().split("\n")[-1]
l = len(last_line)
indent = ' ' * l
line_number = self.line_number
if 4 & code.co_flags: # flag 2 -> variable number of args
self.write('*%s' % code.co_varnames[argc + kw_pairs])
argc += 1
i = len(paramnames) - len(defparams)
self.write(", ".join(paramnames[:i]))
suffix = ', ' if i > 0 else ''
for n in node:
if n == 'pos_arg':
self.write(suffix)
self.write(paramnames[i] + '=')
i += 1
self.preorder(n)
if (line_number != self.line_number):
suffix = ",\n" + indent
line_number = self.line_number
else:
suffix = ', '
if kw_args > 0:
if not (4 & code.co_flags):
if argc > 0:
self.write(", *, ")
else:
self.write("*, ")
pass
else:
self.write(", ")
if not 3.0 <= self.version <= 3.2:
for n in node:
if n == 'pos_arg':
continue
elif self.version >= 3.4 and n.type != 'kwargs':
continue
else:
self.preorder(n)
break
else:
kwargs = node[0]
last = len(kwargs)-1
i = 0
for n in node[0]:
if n == 'kwarg':
self.write('%s=' % n[0].pattr)
self.preorder(n[1])
if i < last:
self.write(', ')
i += 1
pass
pass
pass
pass
if 8 & code.co_flags: # flag 3 -> keyword args
if argc > 0:
self.write(', ')
self.write('**%s' % code.co_varnames[argc + kw_pairs])
if isLambda:
self.write(": ")
else:
self.println("):")
if len(code.co_consts) > 0 and code.co_consts[0] is not None and not isLambda: # ugly
# docstring exists, dump it
print_docstring(self, self.indent, code.co_consts[0])
code._tokens = None # save memory
assert ast == 'stmts'
all_globals = find_all_globals(ast, set())
for g in ((all_globals & self.mod_globs) | find_globals(ast, set())):
self.println(self.indent, 'global ', g)
self.mod_globs -= all_globals
has_none = 'None' in code.co_names
rn = has_none and not find_none(ast)
self.gen_source(ast, code.co_name, code._customize, isLambda=isLambda,
returnNone=rn)
code._tokens = None; code._customize = None # save memory