Repository navigation
Expand file tree
/
Copy pathwhats_left.py
More file actions
executable file
·509 lines (431 loc) · 15.2 KB
/
Copy pathwhats_left.py
File metadata and controls
executable file
·509 lines (431 loc) · 15.2 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
#!/usr/bin/env -S python3 -I
# This script generates Lib/snippets/whats_left_data.py with these variables defined:
# expected_methods - a dictionary mapping builtin objects to their methods
# cpymods - a dictionary mapping module names to their contents
# libdir - the location of RustPython's Lib/ directory.
#
# TODO: include this:
# which finds all modules it has available and
# creates a Python dictionary mapping module names to their contents, which is
# in turn used to generate a second Python script that also finds which modules
# it has available and compares that against the first dictionary we generated.
# We then run this second generated script with RustPython.
import argparse
import re
import os
import re
import sys
import json
import warnings
import inspect
import subprocess
import platform
from pydoc import ModuleScanner
if not sys.flags.isolated:
print("running without -I option.")
print("python -I whats_left.py")
exit(1)
GENERATED_FILE = "extra_tests/not_impl.py"
implementation = platform.python_implementation()
if implementation != "CPython":
sys.exit(f"whats_left.py must be run under CPython, got {implementation} instead")
if sys.version_info[:2] < (3, 11):
sys.exit(f"whats_left.py must be run under CPython 3.11 or newer, got {implementation} {sys.version} instead")
def parse_args():
parser = argparse.ArgumentParser(description="Process some integers.")
parser.add_argument(
"--signature",
action="store_true",
help="print functions whose signatures don't match CPython's",
)
parser.add_argument(
"--doc",
action="store_true",
help="print elements whose __doc__ don't match CPython's",
)
parser.add_argument(
"--json",
action="store_true",
help="print output as JSON (instead of line by line)",
)
args = parser.parse_args()
return args
args = parse_args()
# modules suggested for deprecation by PEP 594 (www.python.org/dev/peps/pep-0594/)
# some of these might be implemented, but they are not a priority
PEP_594_MODULES = {
"aifc",
"asynchat",
"asyncore",
"audioop",
"binhex",
"cgi",
"cgitb",
"chunk",
"crypt",
"formatter",
"fpectl",
"imghdr",
"imp",
"macpath",
"msilib",
"nntplib",
"nis",
"ossaudiodev",
"parser",
"pipes",
"smtpd",
"sndhdr",
"spwd",
"sunau",
"telnetlib",
"uu",
"xdrlib",
}
# CPython specific modules (mostly consisting of templates/tests)
CPYTHON_SPECIFIC_MODS = {
'xxmodule', 'xxsubtype', 'xxlimited', '_xxtestfuzz'
'_testbuffer', '_testcapi', '_testimportmultiple', '_testinternalcapi', '_testmultiphase',
}
IGNORED_MODULES = {"this", "antigravity"} | PEP_594_MODULES | CPYTHON_SPECIFIC_MODS
sys.path = [
path
for path in sys.path
if ("site-packages" not in path and "dist-packages" not in path)
]
def attr_is_not_inherited(type_, attr):
"""
returns True if type_'s attr is not inherited from any of its base classes
"""
bases = type_.__mro__[1:]
return getattr(type_, attr) not in (getattr(base, attr, None) for base in bases)
def extra_info(obj):
if callable(obj) and not inspect._signature_is_builtin(obj):
doc = inspect.getdoc(obj)
try:
sig = str(inspect.signature(obj))
# remove function memory addresses
return {
"sig": re.sub(" at 0x[0-9A-Fa-f]+", " at 0xdeadbeef", sig),
"doc": doc,
}
except Exception as e:
exception = repr(e)
# CPython uses ' RustPython uses "
if exception.replace('"', "'").startswith("ValueError('no signature found"):
return {
"sig": "ValueError('no signature found')",
"doc": doc,
}
return {
"sig": exception,
"doc": doc,
}
return {
"sig": None,
"doc": None,
}
def name_sort_key(name):
if name == "builtins":
return ""
if name[0] == "_":
return name[1:] + "1"
return name + "2"
def gen_methods():
types = [
bool,
bytearray,
bytes,
complex,
dict,
enumerate,
filter,
float,
frozenset,
int,
list,
map,
memoryview,
range,
set,
slice,
str,
super,
tuple,
object,
zip,
classmethod,
staticmethod,
property,
Exception,
BaseException,
]
objects = [t.__name__ for t in types]
objects.append("type(None)")
iters = [
"type(bytearray().__iter__())",
"type(bytes().__iter__())",
"type(dict().__iter__())",
"type(dict().values().__iter__())",
"type(dict().items().__iter__())",
"type(dict().values())",
"type(dict().items())",
"type(set().__iter__())",
"type(list().__iter__())",
"type(range(0).__iter__())",
"type(str().__iter__())",
"type(tuple().__iter__())",
"type(memoryview(bytearray(b'0')).__iter__())",
]
methods = {}
for typ_code in objects + iters:
typ = eval(typ_code)
attrs = []
for attr in dir(typ):
if attr_is_not_inherited(typ, attr):
attrs.append((attr, extra_info(getattr(typ, attr))))
methods[typ.__name__] = (typ_code, extra_info(typ), attrs)
output = "expected_methods = {\n"
for name in sorted(methods.keys(), key=name_sort_key):
typ_code, extra, attrs = methods[name]
output += f" '{name}': ({typ_code}, {extra!r}, [\n"
for attr, attr_extra in attrs:
output += f" ({attr!r}, {attr_extra!r}),\n"
output += " ]),\n"
if typ_code != objects[-1]:
output += "\n"
output += "}\n\n"
return output
def scan_modules():
"""taken from the source code of help('modules')
https://github.com/python/cpython/blob/63298930fb531ba2bb4f23bc3b915dbf1e17e9e1/Lib/pydoc.py#L2178"""
modules = {}
def callback(path, modname, desc, modules=modules):
if modname and modname[-9:] == ".__init__":
modname = modname[:-9] + " (package)"
if modname.find(".") < 0:
modules[modname] = 1
def onerror(modname):
callback(None, modname, None)
with warnings.catch_warnings():
# ignore warnings from importing deprecated modules
warnings.simplefilter("ignore")
ModuleScanner().run(callback, onerror=onerror)
return list(modules.keys())
def import_module(module_name):
import io
from contextlib import redirect_stdout
# Importing modules causes ('Constant String', 2, None, 4) and
# "Hello world!" to be printed to stdout.
f = io.StringIO()
with warnings.catch_warnings(), redirect_stdout(f):
# ignore warnings caused by importing deprecated modules
warnings.filterwarnings("ignore", category=DeprecationWarning)
try:
module = __import__(module_name)
except Exception as e:
return e
return module
def is_child(module, item):
import inspect
item_mod = inspect.getmodule(item)
return item_mod is module
def dir_of_mod_or_error(module_name, keep_other=True):
module = import_module(module_name)
item_names = sorted(set(dir(module)))
result = {}
for item_name in item_names:
item = getattr(module, item_name)
# don't repeat items imported from other modules
if keep_other or is_child(module, item) or inspect.getmodule(item) is None:
result[item_name] = extra_info(item)
return result
def gen_modules():
# check name because modules listed have side effects on import,
# e.g. printing something or opening a webpage
modules = {}
for mod_name in sorted(scan_modules(), key=name_sort_key):
if mod_name in IGNORED_MODULES:
continue
# when generating CPython list, ignore items defined by other modules
dir_result = dir_of_mod_or_error(mod_name, keep_other=False)
if isinstance(dir_result, Exception):
print(
f"!!! {mod_name} skipped because {type(dir_result).__name__}: {str(dir_result)}",
file=sys.stderr,
)
continue
modules[mod_name] = dir_result
return modules
output = """\
# WARNING: THIS IS AN AUTOMATICALLY GENERATED FILE
# EDIT extra_tests/not_impl_gen.sh, NOT THIS FILE.
# RESULTS OF THIS TEST DEPEND ON THE CPYTHON
# VERSION AND PYTHON ENVIRONMENT USED
# TO RUN not_impl_mods_gen.py
"""
output += gen_methods()
output += f"""
cpymods = {gen_modules()!r}
libdir = {os.path.abspath("Lib/").encode('utf8')!r}
"""
# Copy the source code of functions we will reuse in the generated script
REUSED = [
attr_is_not_inherited,
extra_info,
dir_of_mod_or_error,
import_module,
is_child,
]
for fn in REUSED:
output += "".join(inspect.getsourcelines(fn)[0]) + "\n\n"
# Prevent missing variable linter errors from compare()
expected_methods = {}
cpymods = {}
libdir = ""
# This function holds the source code that will be run under RustPython
def compare():
import inspect
import io
import os
import re
import sys
import warnings
from contextlib import redirect_stdout
import json
import platform
def method_incompatibility_reason(typ, method_name, real_method_value):
has_method = hasattr(typ, method_name)
if not has_method:
return ""
is_inherited = not attr_is_not_inherited(typ, method_name)
if is_inherited:
return "(inherited)"
value = extra_info(getattr(typ, method_name))
if value != real_method_value:
return f"{value} != {real_method_value}"
return None
not_implementeds = {}
for name, (typ, real_value, methods) in expected_methods.items():
missing_methods = {}
for method, real_method_value in methods:
reason = method_incompatibility_reason(typ, method, real_method_value)
if reason is not None:
missing_methods[method] = reason
if missing_methods:
not_implementeds[name] = missing_methods
if platform.python_implementation() == "CPython":
if not_implementeds:
sys.exit("ERROR: CPython should have all the methods")
mod_names = [
name.decode()
for name, ext in map(os.path.splitext, os.listdir(libdir))
if ext == b".py" or os.path.isdir(os.path.join(libdir, name))
]
mod_names += list(sys.builtin_module_names)
# Remove easter egg modules
mod_names = sorted(set(mod_names) - {"this", "antigravity"})
rustpymods = {mod: dir_of_mod_or_error(mod) for mod in mod_names}
result = {
"cpython_modules": {},
"implemented": {},
"not_implemented": {},
"failed_to_import": {},
"missing_items": {},
"mismatched_items": {},
"mismatched_doc_items": {},
}
for modname, cpymod in cpymods.items():
rustpymod = rustpymods.get(modname)
if rustpymod is None:
result["not_implemented"][modname] = None
elif isinstance(rustpymod, Exception):
result["failed_to_import"][modname] = rustpymod.__class__.__name__ + str(rustpymod)
else:
implemented_items = sorted(set(cpymod) & set(rustpymod))
mod_missing_items = set(cpymod) - set(rustpymod)
mod_missing_items = sorted(
f"{modname}.{item}" for item in mod_missing_items
)
mod_mismatched_items = [
(f"{modname}.{item}", rustpymod[item]["sig"], cpymod[item]["sig"])
for item in implemented_items
if rustpymod[item]["sig"] != cpymod[item]["sig"]
and not isinstance(cpymod[item]["sig"], Exception)
]
mod_mismatched_doc_items = [
(f"{modname}.{item}", rustpymod[item]["doc"], cpymod[item]["doc"])
for item in implemented_items
if rustpymod[item]["doc"] != cpymod[item]["doc"]
]
if mod_missing_items or mod_mismatched_items:
if mod_missing_items:
result["missing_items"][modname] = mod_missing_items
if mod_mismatched_items:
result["mismatched_items"][modname] = mod_mismatched_items
if mod_mismatched_doc_items:
result["mismatched_doc_items"][modname] = mod_mismatched_doc_items
else:
result["implemented"][modname] = None
result["cpython_modules"] = cpymods
result["not_implementeds"] = not_implementeds
print(json.dumps(result))
def remove_one_indent(s):
indent = " "
return s[len(indent) :] if s.startswith(indent) else s
compare_src = inspect.getsourcelines(compare)[0][1:]
output += "".join(remove_one_indent(line) for line in compare_src)
with open(GENERATED_FILE, "w", encoding='utf-8') as f:
f.write(output + "\n")
subprocess.run(["cargo", "build", "--release", "--features=ssl"], check=True)
result = subprocess.run(
["cargo", "run", "--release", "--features=ssl", "-q", "--", GENERATED_FILE],
env={**os.environ.copy(), "RUSTPYTHONPATH": "Lib"},
text=True,
capture_output=True,
)
# The last line should be json output, the rest of the lines can contain noise
# because importing certain modules can print stuff to stdout/stderr
result = json.loads(result.stdout.splitlines()[-1])
if args.json:
print(json.dumps(result))
sys.exit()
# missing entire modules
print("# modules")
for modname in result["not_implemented"]:
print(modname, "(entire module)")
for modname, exception in result["failed_to_import"].items():
print(f"{modname} (exists but not importable: {exception})")
# missing from builtins
print("\n# builtin items")
for module, missing_methods in result["not_implementeds"].items():
for method, reason in missing_methods.items():
print(f"{module}.{method}" + (f" {reason}" if reason else ""))
# missing from modules
print("\n# stdlib items")
for modname, missing in result["missing_items"].items():
for item in missing:
print(item)
if args.signature:
print("\n# mismatching signatures (warnings)")
for modname, mismatched in result["mismatched_items"].items():
for i, (item, rustpy_value, cpython_value) in enumerate(mismatched):
if cpython_value and cpython_value.startswith("ValueError("):
continue # these items will never match
if rustpy_value is None or rustpy_value.startswith("ValueError("):
rustpy_value = f" {rustpy_value}"
print(f"{item}{rustpy_value}")
if cpython_value is None:
cpython_value = f" {cpython_value}"
print(f"{' ' * len(item)}{cpython_value}")
if i < len(mismatched) - 1:
print()
if args.doc:
print("\n# mismatching `__doc__`s (warnings)")
for modname, mismatched in result["mismatched_doc_items"].items():
for (item, rustpy_doc, cpython_doc) in mismatched:
print(f"{item} {repr(rustpy_doc)} != {repr(cpython_doc)}")
print()
print("# summary")
for error_type, modules in result.items():
print("# ", error_type, len(modules))