Sandbox::https://github.com/Techcable/RustPython/blob/main/whats

Repository navigation

History

executable file

502 lines (422 loc) · 14.7 KB

Raw

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

#!/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("whats_left.py must be run under CPython, got {implementation} 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") 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 (item, rustpy_value, cpython_value) in mismatched:

if cpython_value == "ValueError('no signature found')":

continue # these items will never match

print(f"{item} {rustpy_value} != {cpython_value}")

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))

FilesExpand file tree

whats_left.py

Latest commit

History

whats_left.py

File metadata and controls