forked from rocky/python-uncompyle6
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathparser.py
More file actions
753 lines (638 loc) · 24.2 KB
/
parser.py
File metadata and controls
753 lines (638 loc) · 24.2 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
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
# Copyright (c) 2015-2016 Rocky Bernstein
# Copyright (c) 2005 by Dan Pascu <dan@windowmaker.org>
# Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
# Copyright (c) 1999 John Aycock
"""
Common uncompyle parser routines.
"""
import sys
from xdis.code import iscode
from spark_parser import GenericASTBuilder, DEFAULT_DEBUG as PARSER_DEFAULT_DEBUG
from uncompyle6.show import maybe_show_asm
class ParserError(Exception):
def __init__(self, token, offset):
self.token = token
self.offset = offset
def __str__(self):
return "Parse error at or near `%r' instruction at offset %s\n" % \
(self.token, self.offset)
nop_func = lambda self, args: None
class PythonParser(GenericASTBuilder):
def add_unique_rule(self, rule, opname, count, customize):
"""Add rule to grammar, but only if it hasn't been added previously
opname and count are used in the customize() semantic the actions
to add the semantic action rule. Often, count is not used.
"""
if rule not in self.new_rules:
# print("XXX ", rule) # debug
self.new_rules.add(rule)
self.addRule(rule, nop_func)
customize[opname] = count
pass
return
def add_unique_rules(self, rules, customize):
"""Add rules (a list of string) to grammar
"""
for rule in rules:
if len(rule) == 0:
continue
opname = rule.split('::=')[0].strip()
self.add_unique_rule(rule, opname, 0, customize)
return
def add_unique_doc_rules(self, rules_str, customize):
"""Add rules (a docstring-like list of rules) to grammar
"""
rules = [r.strip() for r in rules_str.split("\n")]
self.add_unique_rules(rules, customize)
return
def cleanup(self):
"""
Remove recursive references to allow garbage
collector to collect this object.
"""
for dict in (self.rule2func, self.rules, self.rule2name):
for i in list(dict.keys()):
dict[i] = None
for i in dir(self):
setattr(self, i, None)
def debug_reduce(self, rule, tokens, parent, i):
"""Customized format and print for our kind of tokens
which gets called in debugging grammar reduce rules
"""
def fix(c):
s = str(c)
i = s.find('_')
if i == -1:
return s
else:
return s[:i]
prefix = ''
if parent and tokens:
p_token = tokens[parent]
if hasattr(p_token, 'linestart') and p_token.linestart:
prefix = 'L.%3d: ' % p_token.linestart
else:
prefix = ' '
if hasattr(p_token, 'offset'):
prefix += "%3s" % fix(p_token.offset)
if len(rule[1]) > 1:
prefix += '-%-3s ' % fix(tokens[i-1].offset)
else:
prefix += ' '
else:
prefix = ' '
print("%s%s ::= %s" % (prefix, rule[0], ' '.join(rule[1])))
def error(self, instructions, index):
# Find the last line boundary
for start in range(index, -1, -1):
if instructions[start].linestart: break
pass
for finish in range(index+1, len(instructions)):
if instructions[finish].linestart: break
pass
err_token = instructions[index]
print("Instruction context:")
for i in range(start, finish):
if i != index:
indent = ' '
else:
indent = '-> '
print("%s%s" % (indent, instructions[i]))
raise ParserError(err_token, err_token.offset)
def typestring(self, token):
return token.type
def nonterminal(self, nt, args):
collect = ('stmts', 'exprlist', 'kvlist', '_stmts', 'print_items', 'kwargs',
# PYPY:
'kvlist_n')
if nt in collect and len(args) > 1:
#
# Collect iterated thingies together. That is rather than
# stmts -> stmts stmt -> stmts stmt -> ...
# stmms -> stmt stmt ...
#
rv = args[0]
rv.append(args[1])
else:
rv = GenericASTBuilder.nonterminal(self, nt, args)
return rv
def __ambiguity(self, children):
# only for debugging! to be removed hG/2000-10-15
print(children)
return GenericASTBuilder.ambiguity(self, children)
def resolve(self, list):
if len(list) == 2 and 'funcdef' in list and 'assign' in list:
return 'funcdef'
if 'grammar' in list and 'expr' in list:
return 'expr'
# print >> sys.stderr, 'resolve', str(list)
return GenericASTBuilder.resolve(self, list)
###############################################
# Common Python 2 and Python 3 grammar rules #
###############################################
def p_start(self, args):
'''
# The start or goal symbol
stmts ::= stmts sstmt
stmts ::= sstmt
'''
def p_call_stmt(self, args):
'''
# eval-mode compilation. Single-mode interactive compilation
# adds another rule.
call_stmt ::= expr POP_TOP
'''
def p_stmt(self, args):
"""
passstmt ::=
_stmts ::= stmt+
# statements with continue
c_stmts ::= _stmts
c_stmts ::= _stmts lastc_stmt
c_stmts ::= lastc_stmt
c_stmts ::= continue_stmts
lastc_stmt ::= iflaststmt
lastc_stmt ::= whileelselaststmt
lastc_stmt ::= forelselaststmt
lastc_stmt ::= ifelsestmtr
lastc_stmt ::= ifelsestmtc
lastc_stmt ::= tryelsestmtc
c_stmts_opt ::= c_stmts
c_stmts_opt ::= passstmt
l_stmts ::= _stmts
l_stmts ::= return_stmts
l_stmts ::= continue_stmts
l_stmts ::= _stmts lastl_stmt
l_stmts ::= lastl_stmt
lastl_stmt ::= iflaststmtl
lastl_stmt ::= ifelsestmtl
lastl_stmt ::= forelselaststmtl
lastl_stmt ::= tryelsestmtl
l_stmts_opt ::= l_stmts
l_stmts_opt ::= passstmt
suite_stmts ::= _stmts
suite_stmts ::= return_stmts
suite_stmts ::= continue_stmts
suite_stmts_opt ::= suite_stmts
suite_stmts_opt ::= passstmt
else_suite ::= suite_stmts
else_suitel ::= l_stmts
else_suitec ::= c_stmts
else_suitec ::= return_stmts
stmt ::= assert
stmt ::= assert2
stmt ::= classdef
stmt ::= call_stmt
stmt ::= ifstmt
stmt ::= ifelsestmt
stmt ::= whilestmt
stmt ::= while1stmt
stmt ::= whileelsestmt
stmt ::= while1elsestmt
stmt ::= forstmt
stmt ::= forelsestmt
stmt ::= trystmt
stmt ::= tryelsestmt
stmt ::= tryfinallystmt
stmt ::= withstmt
stmt ::= withasstmt
stmt ::= del_stmt
del_stmt ::= DELETE_FAST
del_stmt ::= DELETE_NAME
del_stmt ::= DELETE_GLOBAL
stmt ::= return_stmt
return_stmt ::= ret_expr RETURN_VALUE
return_stmts ::= return_stmt
return_stmts ::= _stmts return_stmt
"""
pass
def p_funcdef(self, args):
'''
stmt ::= funcdef
funcdef ::= mkfunc designator
stmt ::= funcdefdeco
funcdefdeco ::= mkfuncdeco designator
mkfuncdeco ::= expr mkfuncdeco CALL_FUNCTION_1
mkfuncdeco ::= expr mkfuncdeco0 CALL_FUNCTION_1
mkfuncdeco0 ::= mkfunc
load_closure ::= load_closure LOAD_CLOSURE
load_closure ::= LOAD_CLOSURE
'''
def p_genexpr(self, args):
'''
expr ::= genexpr
stmt ::= genexpr_func
genexpr_func ::= LOAD_FAST FOR_ITER designator comp_iter JUMP_BACK
'''
def p_jump(self, args):
"""
_jump ::= JUMP_ABSOLUTE
_jump ::= JUMP_FORWARD
_jump ::= JUMP_BACK
# Zero or more COME_FROMs
# loops can have this
_come_from ::= COME_FROM*
# Zero or one COME_FROM
# And/or expressions have this
come_from_opt ::= COME_FROM?
"""
def p_dictcomp(self, args):
'''
expr ::= dictcomp
stmt ::= dictcomp_func
dictcomp_func ::= BUILD_MAP_0 LOAD_FAST FOR_ITER designator
comp_iter JUMP_BACK RETURN_VALUE RETURN_LAST
'''
def p_augmented_assign(self, args):
'''
stmt ::= augassign1
stmt ::= augassign2
# This is odd in that other augassign1's have only 3 slots
# The designator isn't used as that's supposed to be also
# indicated in the first expr
augassign1 ::= expr expr inplace_op designator
augassign1 ::= expr expr inplace_op ROT_THREE STORE_SUBSCR
augassign2 ::= expr DUP_TOP LOAD_ATTR expr
inplace_op ROT_TWO STORE_ATTR
inplace_op ::= INPLACE_ADD
inplace_op ::= INPLACE_SUBTRACT
inplace_op ::= INPLACE_MULTIPLY
inplace_op ::= INPLACE_TRUE_DIVIDE
inplace_op ::= INPLACE_FLOOR_DIVIDE
inplace_op ::= INPLACE_MODULO
inplace_op ::= INPLACE_POWER
inplace_op ::= INPLACE_LSHIFT
inplace_op ::= INPLACE_RSHIFT
inplace_op ::= INPLACE_AND
inplace_op ::= INPLACE_XOR
inplace_op ::= INPLACE_OR
'''
def p_assign(self, args):
'''
stmt ::= assign
assign ::= expr DUP_TOP designList
assign ::= expr designator
stmt ::= assign2
stmt ::= assign3
assign2 ::= expr expr ROT_TWO designator designator
assign3 ::= expr expr expr ROT_THREE ROT_TWO designator designator designator
'''
def p_forstmt(self, args):
"""
_for ::= GET_ITER FOR_ITER
for_block ::= l_stmts_opt _come_from JUMP_BACK
for_block ::= return_stmts _come_from
forstmt ::= SETUP_LOOP expr _for designator
for_block POP_BLOCK _come_from
forelsestmt ::= SETUP_LOOP expr _for designator
for_block POP_BLOCK else_suite _come_from
forelselaststmt ::= SETUP_LOOP expr _for designator
for_block POP_BLOCK else_suitec _come_from
forelselaststmtl ::= SETUP_LOOP expr _for designator
for_block POP_BLOCK else_suitel _come_from
"""
def p_whilestmt(self, args):
"""
whilestmt ::= SETUP_LOOP testexpr l_stmts_opt JUMP_BACK
POP_BLOCK _come_from
whilestmt ::= SETUP_LOOP testexpr return_stmts
POP_BLOCK COME_FROM
whileelsestmt ::= SETUP_LOOP testexpr
l_stmts_opt JUMP_BACK
POP_BLOCK
else_suite COME_FROM
whileelselaststmt ::= SETUP_LOOP testexpr
l_stmts_opt JUMP_BACK
POP_BLOCK
else_suitec COME_FROM
"""
def p_import20(self, args):
"""
stmt ::= importstmt
stmt ::= importfrom
stmt ::= importstar
stmt ::= importmultiple
importlist2 ::= importlist2 import_as
importlist2 ::= import_as
import_as ::= IMPORT_NAME designator
import_as ::= IMPORT_NAME load_attrs designator
import_as ::= IMPORT_FROM designator
importstmt ::= LOAD_CONST LOAD_CONST import_as
importstar ::= LOAD_CONST LOAD_CONST IMPORT_NAME IMPORT_STAR
importfrom ::= LOAD_CONST LOAD_CONST IMPORT_NAME importlist2 POP_TOP
importmultiple ::= LOAD_CONST LOAD_CONST import_as imports_cont
imports_cont ::= imports_cont import_cont
imports_cont ::= import_cont
import_cont ::= LOAD_CONST LOAD_CONST import_as_cont
import_as_cont ::= IMPORT_FROM designator
load_attrs ::= LOAD_ATTR
load_attrs ::= load_attrs LOAD_ATTR
"""
def p_list_comprehension(self, args):
"""
expr ::= list_compr
list_compr ::= BUILD_LIST_0 list_iter
list_iter ::= list_for
list_iter ::= list_if
list_iter ::= list_if_not
list_iter ::= lc_body
list_if ::= expr jmp_false list_iter
list_if_not ::= expr jmp_true list_iter
lc_body ::= expr LIST_APPEND
"""
def p_setcomp(self, args):
"""
expr ::= setcomp
setcomp ::= LOAD_SETCOMP MAKE_FUNCTION_0 expr GET_ITER CALL_FUNCTION_1
comp_iter ::= comp_if
comp_iter ::= comp_ifnot
comp_iter ::= comp_for
comp_iter ::= comp_body
comp_body ::= gen_comp_body
gen_comp_body ::= expr YIELD_VALUE POP_TOP
comp_if ::= expr jmp_false comp_iter
comp_ifnot ::= expr jmp_true comp_iter
comp_for ::= expr _for designator comp_iter JUMP_BACK
"""
def p_expr(self, args):
'''
expr ::= _mklambda
expr ::= LOAD_FAST
expr ::= LOAD_NAME
expr ::= LOAD_CONST
expr ::= LOAD_GLOBAL
expr ::= LOAD_DEREF
expr ::= load_attr
expr ::= binary_expr
expr ::= build_list
expr ::= cmp
expr ::= mapexpr
expr ::= and
expr ::= and2
expr ::= or
expr ::= unary_expr
expr ::= call_function
expr ::= unary_not
expr ::= binary_subscr
expr ::= binary_subscr2
expr ::= get_iter
expr ::= buildslice2
expr ::= buildslice3
expr ::= yield
# Possibly Python < 2.3
# expr ::= SET_LINENO
binary_expr ::= expr expr binary_op
binary_op ::= BINARY_ADD
binary_op ::= BINARY_MULTIPLY
binary_op ::= BINARY_AND
binary_op ::= BINARY_OR
binary_op ::= BINARY_XOR
binary_op ::= BINARY_SUBTRACT
binary_op ::= BINARY_TRUE_DIVIDE
binary_op ::= BINARY_FLOOR_DIVIDE
binary_op ::= BINARY_MODULO
binary_op ::= BINARY_LSHIFT
binary_op ::= BINARY_RSHIFT
binary_op ::= BINARY_POWER
unary_expr ::= expr unary_op
unary_op ::= UNARY_POSITIVE
unary_op ::= UNARY_NEGATIVE
unary_op ::= UNARY_INVERT
unary_not ::= expr UNARY_NOT
binary_subscr ::= expr expr BINARY_SUBSCR
load_attr ::= expr LOAD_ATTR
get_iter ::= expr GET_ITER
buildslice3 ::= expr expr expr BUILD_SLICE_3
buildslice2 ::= expr expr BUILD_SLICE_2
yield ::= expr YIELD_VALUE
_mklambda ::= load_closure mklambda
_mklambda ::= mklambda
# "and" where the first part of the and is true,
# so there is only the 2nd part to evaluate
and2 ::= _jump jmp_false COME_FROM expr COME_FROM
expr ::= conditional
conditional ::= expr jmp_false expr JUMP_FORWARD expr COME_FROM
conditional ::= expr jmp_false expr JUMP_ABSOLUTE expr
expr ::= conditionalnot
conditionalnot ::= expr jmp_true expr _jump expr COME_FROM
ret_expr ::= expr
ret_expr ::= ret_and
ret_expr ::= ret_or
ret_expr_or_cond ::= ret_expr
ret_expr_or_cond ::= ret_cond
ret_expr_or_cond ::= ret_cond_not
stmt ::= return_lambda
stmt ::= conditional_lambda
return_lambda ::= ret_expr RETURN_VALUE LAMBDA_MARKER
conditional_lambda ::= expr jmp_false return_if_stmt return_stmt LAMBDA_MARKER
cmp ::= cmp_list
cmp ::= compare
compare ::= expr expr COMPARE_OP
cmp_list ::= expr cmp_list1 ROT_TWO POP_TOP
_come_from
cmp_list1 ::= expr DUP_TOP ROT_THREE
COMPARE_OP jmp_false
cmp_list1 _come_from
cmp_list1 ::= expr DUP_TOP ROT_THREE
COMPARE_OP jmp_false
cmp_list2 _come_from
cmp_list2 ::= expr COMPARE_OP JUMP_FORWARD
cmp_list2 ::= expr COMPARE_OP RETURN_VALUE
mapexpr ::= BUILD_MAP kvlist
kvlist ::= kvlist kv
kvlist ::= kvlist kv2
kvlist ::= kvlist kv3
kvlist ::=
kv ::= DUP_TOP expr ROT_TWO expr STORE_SUBSCR
kv2 ::= DUP_TOP expr expr ROT_THREE STORE_SUBSCR
kv3 ::= expr expr STORE_MAP
exprlist ::= exprlist expr
exprlist ::= expr
# Positional arguments in make_function
pos_arg ::= expr
expr32 ::= expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr expr
expr1024 ::= expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32 expr32
'''
def p_designator(self, args):
'''
# Note. The below is right-recursive:
designList ::= designator designator
designList ::= designator DUP_TOP designList
## Can we replace with left-recursive, and redo with:
##
## designList ::= designLists designator designator
## designLists ::= designLists designator DUP_TOP
## designLists ::=
## Will need to redo semantic actiion
designator ::= STORE_FAST
designator ::= STORE_NAME
designator ::= STORE_GLOBAL
designator ::= STORE_DEREF
designator ::= expr STORE_ATTR
designator ::= store_subscr
store_subscr ::= expr expr STORE_SUBSCR
designator ::= unpack
designator ::= unpack_list
'''
def parse(p, tokens, customize):
p.add_custom_rules(tokens, customize)
ast = p.parse(tokens)
# p.cleanup()
return ast
def get_python_parser(
version, debug_parser=PARSER_DEFAULT_DEBUG, compile_mode='exec',
is_pypy = False):
"""Returns parser object for Python version 2 or 3, 3.2, 3.5on,
etc., depending on the parameters passed. *compile_mode* is either
'exec', 'eval', or 'single'. See
https://docs.python.org/3.6/library/functions.html#compile for an
explanation of the different modes.
"""
# FIXME: there has to be a better way...
if version < 3.0:
if version == 1.5:
import uncompyle6.parsers.parse15 as parse15
if compile_mode == 'exec':
p = parse15.Python15Parser(debug_parser)
else:
p = parse15.Python15ParserSingle(debug_parser)
elif version == 2.1:
import uncompyle6.parsers.parse21 as parse21
if compile_mode == 'exec':
p = parse21.Python21Parser(debug_parser)
else:
p = parse21.Python21ParserSingle(debug_parser)
elif version == 2.2:
import uncompyle6.parsers.parse22 as parse22
if compile_mode == 'exec':
p = parse22.Python22Parser(debug_parser)
else:
p = parse22.Python22ParserSingle(debug_parser)
elif version == 2.3:
import uncompyle6.parsers.parse23 as parse23
if compile_mode == 'exec':
p = parse23.Python23Parser(debug_parser)
else:
p = parse23.Python23ParserSingle(debug_parser)
elif version == 2.4:
import uncompyle6.parsers.parse24 as parse24
if compile_mode == 'exec':
p = parse24.Python24Parser(debug_parser)
else:
p = parse24.Python24ParserSingle(debug_parser)
elif version == 2.5:
import uncompyle6.parsers.parse25 as parse25
if compile_mode == 'exec':
p = parse25.Python25Parser(debug_parser)
else:
p = parse25.Python25ParserSingle(debug_parser)
elif version == 2.6:
import uncompyle6.parsers.parse26 as parse26
if compile_mode == 'exec':
p = parse26.Python26Parser(debug_parser)
else:
p = parse26.Python26ParserSingle(debug_parser)
elif version == 2.7:
import uncompyle6.parsers.parse27 as parse27
if compile_mode == 'exec':
p = parse27.Python27Parser(debug_parser)
else:
p = parse27.Python27ParserSingle(debug_parser)
else:
import uncompyle6.parsers.parse2 as parse2
if compile_mode == 'exec':
p = parse2.Python2Parser(debug_parser)
else:
p = parse2.Python2ParserSingle(debug_parser)
pass
pass
pass
else:
import uncompyle6.parsers.parse3 as parse3
if version == 3.0:
import uncompyle6.parsers.parse30 as parse30
if compile_mode == 'exec':
p = parse30.Python30Parser(debug_parser)
else:
p = parse30.Python30ParserSingle(debug_parser)
elif version == 3.1:
import uncompyle6.parsers.parse31 as parse31
if compile_mode == 'exec':
p = parse31.Python31Parser(debug_parser)
else:
p = parse31.Python31ParserSingle(debug_parser)
elif version == 3.2:
import uncompyle6.parsers.parse32 as parse32
if compile_mode == 'exec':
p = parse32.Python32Parser(debug_parser)
else:
p = parse32.Python32ParserSingle(debug_parser)
elif version == 3.3:
import uncompyle6.parsers.parse33 as parse33
if compile_mode == 'exec':
p = parse33.Python33Parser(debug_parser)
else:
p = parse33.Python33ParserSingle(debug_parser)
elif version == 3.4:
import uncompyle6.parsers.parse34 as parse34
if compile_mode == 'exec':
p = parse34.Python34Parser(debug_parser)
else:
p = parse34.Python34ParserSingle(debug_parser)
elif version == 3.5:
import uncompyle6.parsers.parse35 as parse35
if compile_mode == 'exec':
p = parse35.Python35Parser(debug_parser)
else:
p = parse35.Python35ParserSingle(debug_parser)
elif version == 3.6:
import uncompyle6.parsers.parse36 as parse36
if compile_mode == 'exec':
p = parse36.Python36Parser(debug_parser)
else:
p = parse36.Python36ParserSingle(debug_parser)
else:
if compile_mode == 'exec':
p = parse3.Python3Parser(debug_parser)
else:
p = parse3.Python3ParserSingle(debug_parser)
p.version = version
# p.dumpGrammar() # debug
return p
class PythonParserSingle(PythonParser):
def p_call_stmt_single(self, args):
'''
# single-mode compilation. Eval-mode interactive compilation
# drops the last rule.
call_stmt ::= expr PRINT_EXPR
'''
def python_parser(version, co, out=sys.stdout, showasm=False,
parser_debug=PARSER_DEFAULT_DEBUG, is_pypy=False):
"""
Parse a code object to an abstract syntax tree representation.
:param version: The python version this code is from as a float, for
example 2.6, 2.7, 3.2, 3.3, 3.4, 3.5 etc.
:param co: The code object to parse.
:param out: File like object to write the output to.
:param showasm: Flag which determines whether the disassembled and
ingested code is written to sys.stdout or not.
:param parser_debug: dict containing debug flags for the spark parser.
:return: Abstract syntax tree representation of the code object.
"""
assert iscode(co)
from uncompyle6.scanner import get_scanner
scanner = get_scanner(version, is_pypy)
tokens, customize = scanner.ingest(co)
maybe_show_asm(showasm, tokens)
# For heavy grammar debugging
# parser_debug = {'rules': True, 'transition': True, 'reduce' : True,
# 'showstack': 'full'}
p = get_python_parser(version, parser_debug)
return parse(p, tokens, customize)
if __name__ == '__main__':
def parse_test(co):
from uncompyle6 import PYTHON_VERSION, IS_PYPY
ast = python_parser(PYTHON_VERSION, co, showasm=True, is_pypy=IS_PYPY)
print(ast)
return
parse_test(parse_test.__code__)