You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1332 lines
44 KiB
1332 lines
44 KiB
3 years ago
|
import dis
|
||
|
|
import math
|
||
|
|
import os
|
||
|
|
import unittest
|
||
|
|
import sys
|
||
|
|
import _ast
|
||
|
|
import tempfile
|
||
|
|
import types
|
||
|
|
from test import support
|
||
|
|
from test.support import script_helper
|
||
|
|
from test.support.os_helper import FakePath
|
||
|
|
|
||
|
|
|
||
|
|
class TestSpecifics(unittest.TestCase):
|
||
|
|
|
||
|
|
def compile_single(self, source):
|
||
|
|
compile(source, "<single>", "single")
|
||
|
|
|
||
|
|
def assertInvalidSingle(self, source):
|
||
|
|
self.assertRaises(SyntaxError, self.compile_single, source)
|
||
|
|
|
||
|
|
def test_no_ending_newline(self):
|
||
|
|
compile("hi", "<test>", "exec")
|
||
|
|
compile("hi\r", "<test>", "exec")
|
||
|
|
|
||
|
|
def test_empty(self):
|
||
|
|
compile("", "<test>", "exec")
|
||
|
|
|
||
|
|
def test_other_newlines(self):
|
||
|
|
compile("\r\n", "<test>", "exec")
|
||
|
|
compile("\r", "<test>", "exec")
|
||
|
|
compile("hi\r\nstuff\r\ndef f():\n pass\r", "<test>", "exec")
|
||
|
|
compile("this_is\rreally_old_mac\rdef f():\n pass", "<test>", "exec")
|
||
|
|
|
||
|
|
def test_debug_assignment(self):
|
||
|
|
# catch assignments to __debug__
|
||
|
|
self.assertRaises(SyntaxError, compile, '__debug__ = 1', '?', 'single')
|
||
|
|
import builtins
|
||
|
|
prev = builtins.__debug__
|
||
|
|
setattr(builtins, '__debug__', 'sure')
|
||
|
|
self.assertEqual(__debug__, prev)
|
||
|
|
setattr(builtins, '__debug__', prev)
|
||
|
|
|
||
|
|
def test_argument_handling(self):
|
||
|
|
# detect duplicate positional and keyword arguments
|
||
|
|
self.assertRaises(SyntaxError, eval, 'lambda a,a:0')
|
||
|
|
self.assertRaises(SyntaxError, eval, 'lambda a,a=1:0')
|
||
|
|
self.assertRaises(SyntaxError, eval, 'lambda a=1,a=1:0')
|
||
|
|
self.assertRaises(SyntaxError, exec, 'def f(a, a): pass')
|
||
|
|
self.assertRaises(SyntaxError, exec, 'def f(a = 0, a = 1): pass')
|
||
|
|
self.assertRaises(SyntaxError, exec, 'def f(a): global a; a = 1')
|
||
|
|
|
||
|
|
def test_syntax_error(self):
|
||
|
|
self.assertRaises(SyntaxError, compile, "1+*3", "filename", "exec")
|
||
|
|
|
||
|
|
def test_none_keyword_arg(self):
|
||
|
|
self.assertRaises(SyntaxError, compile, "f(None=1)", "<string>", "exec")
|
||
|
|
|
||
|
|
def test_duplicate_global_local(self):
|
||
|
|
self.assertRaises(SyntaxError, exec, 'def f(a): global a; a = 1')
|
||
|
|
|
||
|
|
def test_exec_with_general_mapping_for_locals(self):
|
||
|
|
|
||
|
|
class M:
|
||
|
|
"Test mapping interface versus possible calls from eval()."
|
||
|
|
def __getitem__(self, key):
|
||
|
|
if key == 'a':
|
||
|
|
return 12
|
||
|
|
raise KeyError
|
||
|
|
def __setitem__(self, key, value):
|
||
|
|
self.results = (key, value)
|
||
|
|
def keys(self):
|
||
|
|
return list('xyz')
|
||
|
|
|
||
|
|
m = M()
|
||
|
|
g = globals()
|
||
|
|
exec('z = a', g, m)
|
||
|
|
self.assertEqual(m.results, ('z', 12))
|
||
|
|
try:
|
||
|
|
exec('z = b', g, m)
|
||
|
|
except NameError:
|
||
|
|
pass
|
||
|
|
else:
|
||
|
|
self.fail('Did not detect a KeyError')
|
||
|
|
exec('z = dir()', g, m)
|
||
|
|
self.assertEqual(m.results, ('z', list('xyz')))
|
||
|
|
exec('z = globals()', g, m)
|
||
|
|
self.assertEqual(m.results, ('z', g))
|
||
|
|
exec('z = locals()', g, m)
|
||
|
|
self.assertEqual(m.results, ('z', m))
|
||
|
|
self.assertRaises(TypeError, exec, 'z = b', m)
|
||
|
|
|
||
|
|
class A:
|
||
|
|
"Non-mapping"
|
||
|
|
pass
|
||
|
|
m = A()
|
||
|
|
self.assertRaises(TypeError, exec, 'z = a', g, m)
|
||
|
|
|
||
|
|
# Verify that dict subclasses work as well
|
||
|
|
class D(dict):
|
||
|
|
def __getitem__(self, key):
|
||
|
|
if key == 'a':
|
||
|
|
return 12
|
||
|
|
return dict.__getitem__(self, key)
|
||
|
|
d = D()
|
||
|
|
exec('z = a', g, d)
|
||
|
|
self.assertEqual(d['z'], 12)
|
||
|
|
|
||
|
|
def test_extended_arg(self):
|
||
|
|
longexpr = 'x = x or ' + '-x' * 2500
|
||
|
|
g = {}
|
||
|
|
code = '''
|
||
|
|
def f(x):
|
||
|
|
%s
|
||
|
|
%s
|
||
|
|
%s
|
||
|
|
%s
|
||
|
|
%s
|
||
|
|
%s
|
||
|
|
%s
|
||
|
|
%s
|
||
|
|
%s
|
||
|
|
%s
|
||
|
|
# the expressions above have no effect, x == argument
|
||
|
|
while x:
|
||
|
|
x -= 1
|
||
|
|
# EXTENDED_ARG/JUMP_ABSOLUTE here
|
||
|
|
return x
|
||
|
|
''' % ((longexpr,)*10)
|
||
|
|
exec(code, g)
|
||
|
|
self.assertEqual(g['f'](5), 0)
|
||
|
|
|
||
|
|
def test_argument_order(self):
|
||
|
|
self.assertRaises(SyntaxError, exec, 'def f(a=1, b): pass')
|
||
|
|
|
||
|
|
def test_float_literals(self):
|
||
|
|
# testing bad float literals
|
||
|
|
self.assertRaises(SyntaxError, eval, "2e")
|
||
|
|
self.assertRaises(SyntaxError, eval, "2.0e+")
|
||
|
|
self.assertRaises(SyntaxError, eval, "1e-")
|
||
|
|
self.assertRaises(SyntaxError, eval, "3-4e/21")
|
||
|
|
|
||
|
|
def test_indentation(self):
|
||
|
|
# testing compile() of indented block w/o trailing newline"
|
||
|
|
s = """
|
||
|
|
if 1:
|
||
|
|
if 2:
|
||
|
|
pass"""
|
||
|
|
compile(s, "<string>", "exec")
|
||
|
|
|
||
|
|
# This test is probably specific to CPython and may not generalize
|
||
|
|
# to other implementations. We are trying to ensure that when
|
||
|
|
# the first line of code starts after 256, correct line numbers
|
||
|
|
# in tracebacks are still produced.
|
||
|
|
def test_leading_newlines(self):
|
||
|
|
s256 = "".join(["\n"] * 256 + ["spam"])
|
||
|
|
co = compile(s256, 'fn', 'exec')
|
||
|
|
self.assertEqual(co.co_firstlineno, 1)
|
||
|
|
self.assertEqual(list(co.co_lines()), [(0, 8, 257)])
|
||
|
|
|
||
|
|
def test_literals_with_leading_zeroes(self):
|
||
|
|
for arg in ["077787", "0xj", "0x.", "0e", "090000000000000",
|
||
|
|
"080000000000000", "000000000000009", "000000000000008",
|
||
|
|
"0b42", "0BADCAFE", "0o123456789", "0b1.1", "0o4.2",
|
||
|
|
"0b101j", "0o153j", "0b100e1", "0o777e1", "0777",
|
||
|
|
"000777", "000000000000007"]:
|
||
|
|
self.assertRaises(SyntaxError, eval, arg)
|
||
|
|
|
||
|
|
self.assertEqual(eval("0xff"), 255)
|
||
|
|
self.assertEqual(eval("0777."), 777)
|
||
|
|
self.assertEqual(eval("0777.0"), 777)
|
||
|
|
self.assertEqual(eval("000000000000000000000000000000000000000000000000000777e0"), 777)
|
||
|
|
self.assertEqual(eval("0777e1"), 7770)
|
||
|
|
self.assertEqual(eval("0e0"), 0)
|
||
|
|
self.assertEqual(eval("0000e-012"), 0)
|
||
|
|
self.assertEqual(eval("09.5"), 9.5)
|
||
|
|
self.assertEqual(eval("0777j"), 777j)
|
||
|
|
self.assertEqual(eval("000"), 0)
|
||
|
|
self.assertEqual(eval("00j"), 0j)
|
||
|
|
self.assertEqual(eval("00.0"), 0)
|
||
|
|
self.assertEqual(eval("0e3"), 0)
|
||
|
|
self.assertEqual(eval("090000000000000."), 90000000000000.)
|
||
|
|
self.assertEqual(eval("090000000000000.0000000000000000000000"), 90000000000000.)
|
||
|
|
self.assertEqual(eval("090000000000000e0"), 90000000000000.)
|
||
|
|
self.assertEqual(eval("090000000000000e-0"), 90000000000000.)
|
||
|
|
self.assertEqual(eval("090000000000000j"), 90000000000000j)
|
||
|
|
self.assertEqual(eval("000000000000008."), 8.)
|
||
|
|
self.assertEqual(eval("000000000000009."), 9.)
|
||
|
|
self.assertEqual(eval("0b101010"), 42)
|
||
|
|
self.assertEqual(eval("-0b000000000010"), -2)
|
||
|
|
self.assertEqual(eval("0o777"), 511)
|
||
|
|
self.assertEqual(eval("-0o0000010"), -8)
|
||
|
|
|
||
|
|
def test_unary_minus(self):
|
||
|
|
# Verify treatment of unary minus on negative numbers SF bug #660455
|
||
|
|
if sys.maxsize == 2147483647:
|
||
|
|
# 32-bit machine
|
||
|
|
all_one_bits = '0xffffffff'
|
||
|
|
self.assertEqual(eval(all_one_bits), 4294967295)
|
||
|
|
self.assertEqual(eval("-" + all_one_bits), -4294967295)
|
||
|
|
elif sys.maxsize == 9223372036854775807:
|
||
|
|
# 64-bit machine
|
||
|
|
all_one_bits = '0xffffffffffffffff'
|
||
|
|
self.assertEqual(eval(all_one_bits), 18446744073709551615)
|
||
|
|
self.assertEqual(eval("-" + all_one_bits), -18446744073709551615)
|
||
|
|
else:
|
||
|
|
self.fail("How many bits *does* this machine have???")
|
||
|
|
# Verify treatment of constant folding on -(sys.maxsize+1)
|
||
|
|
# i.e. -2147483648 on 32 bit platforms. Should return int.
|
||
|
|
self.assertIsInstance(eval("%s" % (-sys.maxsize - 1)), int)
|
||
|
|
self.assertIsInstance(eval("%s" % (-sys.maxsize - 2)), int)
|
||
|
|
|
||
|
|
if sys.maxsize == 9223372036854775807:
|
||
|
|
def test_32_63_bit_values(self):
|
||
|
|
a = +4294967296 # 1 << 32
|
||
|
|
b = -4294967296 # 1 << 32
|
||
|
|
c = +281474976710656 # 1 << 48
|
||
|
|
d = -281474976710656 # 1 << 48
|
||
|
|
e = +4611686018427387904 # 1 << 62
|
||
|
|
f = -4611686018427387904 # 1 << 62
|
||
|
|
g = +9223372036854775807 # 1 << 63 - 1
|
||
|
|
h = -9223372036854775807 # 1 << 63 - 1
|
||
|
|
|
||
|
|
for variable in self.test_32_63_bit_values.__code__.co_consts:
|
||
|
|
if variable is not None:
|
||
|
|
self.assertIsInstance(variable, int)
|
||
|
|
|
||
|
|
def test_sequence_unpacking_error(self):
|
||
|
|
# Verify sequence packing/unpacking with "or". SF bug #757818
|
||
|
|
i,j = (1, -1) or (-1, 1)
|
||
|
|
self.assertEqual(i, 1)
|
||
|
|
self.assertEqual(j, -1)
|
||
|
|
|
||
|
|
def test_none_assignment(self):
|
||
|
|
stmts = [
|
||
|
|
'None = 0',
|
||
|
|
'None += 0',
|
||
|
|
'__builtins__.None = 0',
|
||
|
|
'def None(): pass',
|
||
|
|
'class None: pass',
|
||
|
|
'(a, None) = 0, 0',
|
||
|
|
'for None in range(10): pass',
|
||
|
|
'def f(None): pass',
|
||
|
|
'import None',
|
||
|
|
'import x as None',
|
||
|
|
'from x import None',
|
||
|
|
'from x import y as None'
|
||
|
|
]
|
||
|
|
for stmt in stmts:
|
||
|
|
stmt += "\n"
|
||
|
|
self.assertRaises(SyntaxError, compile, stmt, 'tmp', 'single')
|
||
|
|
self.assertRaises(SyntaxError, compile, stmt, 'tmp', 'exec')
|
||
|
|
|
||
|
|
def test_import(self):
|
||
|
|
succeed = [
|
||
|
|
'import sys',
|
||
|
|
'import os, sys',
|
||
|
|
'import os as bar',
|
||
|
|
'import os.path as bar',
|
||
|
|
'from __future__ import nested_scopes, generators',
|
||
|
|
'from __future__ import (nested_scopes,\ngenerators)',
|
||
|
|
'from __future__ import (nested_scopes,\ngenerators,)',
|
||
|
|
'from sys import stdin, stderr, stdout',
|
||
|
|
'from sys import (stdin, stderr,\nstdout)',
|
||
|
|
'from sys import (stdin, stderr,\nstdout,)',
|
||
|
|
'from sys import (stdin\n, stderr, stdout)',
|
||
|
|
'from sys import (stdin\n, stderr, stdout,)',
|
||
|
|
'from sys import stdin as si, stdout as so, stderr as se',
|
||
|
|
'from sys import (stdin as si, stdout as so, stderr as se)',
|
||
|
|
'from sys import (stdin as si, stdout as so, stderr as se,)',
|
||
|
|
]
|
||
|
|
fail = [
|
||
|
|
'import (os, sys)',
|
||
|
|
'import (os), (sys)',
|
||
|
|
'import ((os), (sys))',
|
||
|
|
'import (sys',
|
||
|
|
'import sys)',
|
||
|
|
'import (os,)',
|
||
|
|
'import os As bar',
|
||
|
|
'import os.path a bar',
|
||
|
|
'from sys import stdin As stdout',
|
||
|
|
'from sys import stdin a stdout',
|
||
|
|
'from (sys) import stdin',
|
||
|
|
'from __future__ import (nested_scopes',
|
||
|
|
'from __future__ import nested_scopes)',
|
||
|
|
'from __future__ import nested_scopes,\ngenerators',
|
||
|
|
'from sys import (stdin',
|
||
|
|
'from sys import stdin)',
|
||
|
|
'from sys import stdin, stdout,\nstderr',
|
||
|
|
'from sys import stdin si',
|
||
|
|
'from sys import stdin,',
|
||
|
|
'from sys import (*)',
|
||
|
|
'from sys import (stdin,, stdout, stderr)',
|
||
|
|
'from sys import (stdin, stdout),',
|
||
|
|
]
|
||
|
|
for stmt in succeed:
|
||
|
|
compile(stmt, 'tmp', 'exec')
|
||
|
|
for stmt in fail:
|
||
|
|
self.assertRaises(SyntaxError, compile, stmt, 'tmp', 'exec')
|
||
|
|
|
||
|
|
def test_for_distinct_code_objects(self):
|
||
|
|
# SF bug 1048870
|
||
|
|
def f():
|
||
|
|
f1 = lambda x=1: x
|
||
|
|
f2 = lambda x=2: x
|
||
|
|
return f1, f2
|
||
|
|
f1, f2 = f()
|
||
|
|
self.assertNotEqual(id(f1.__code__), id(f2.__code__))
|
||
|
|
|
||
|
|
def test_lambda_doc(self):
|
||
|
|
l = lambda: "foo"
|
||
|
|
self.assertIsNone(l.__doc__)
|
||
|
|
|
||
|
|
def test_encoding(self):
|
||
|
|
code = b'# -*- coding: badencoding -*-\npass\n'
|
||
|
|
self.assertRaises(SyntaxError, compile, code, 'tmp', 'exec')
|
||
|
|
code = '# -*- coding: badencoding -*-\n"\xc2\xa4"\n'
|
||
|
|
compile(code, 'tmp', 'exec')
|
||
|
|
self.assertEqual(eval(code), '\xc2\xa4')
|
||
|
|
code = '"\xc2\xa4"\n'
|
||
|
|
self.assertEqual(eval(code), '\xc2\xa4')
|
||
|
|
code = b'"\xc2\xa4"\n'
|
||
|
|
self.assertEqual(eval(code), '\xa4')
|
||
|
|
code = b'# -*- coding: latin1 -*-\n"\xc2\xa4"\n'
|
||
|
|
self.assertEqual(eval(code), '\xc2\xa4')
|
||
|
|
code = b'# -*- coding: utf-8 -*-\n"\xc2\xa4"\n'
|
||
|
|
self.assertEqual(eval(code), '\xa4')
|
||
|
|
code = b'# -*- coding: iso8859-15 -*-\n"\xc2\xa4"\n'
|
||
|
|
self.assertEqual(eval(code), '\xc2\u20ac')
|
||
|
|
code = '"""\\\n# -*- coding: iso8859-15 -*-\n\xc2\xa4"""\n'
|
||
|
|
self.assertEqual(eval(code), '# -*- coding: iso8859-15 -*-\n\xc2\xa4')
|
||
|
|
code = b'"""\\\n# -*- coding: iso8859-15 -*-\n\xc2\xa4"""\n'
|
||
|
|
self.assertEqual(eval(code), '# -*- coding: iso8859-15 -*-\n\xa4')
|
||
|
|
|
||
|
|
def test_subscripts(self):
|
||
|
|
# SF bug 1448804
|
||
|
|
# Class to make testing subscript results easy
|
||
|
|
class str_map(object):
|
||
|
|
def __init__(self):
|
||
|
|
self.data = {}
|
||
|
|
def __getitem__(self, key):
|
||
|
|
return self.data[str(key)]
|
||
|
|
def __setitem__(self, key, value):
|
||
|
|
self.data[str(key)] = value
|
||
|
|
def __delitem__(self, key):
|
||
|
|
del self.data[str(key)]
|
||
|
|
def __contains__(self, key):
|
||
|
|
return str(key) in self.data
|
||
|
|
d = str_map()
|
||
|
|
# Index
|
||
|
|
d[1] = 1
|
||
|
|
self.assertEqual(d[1], 1)
|
||
|
|
d[1] += 1
|
||
|
|
self.assertEqual(d[1], 2)
|
||
|
|
del d[1]
|
||
|
|
self.assertNotIn(1, d)
|
||
|
|
# Tuple of indices
|
||
|
|
d[1, 1] = 1
|
||
|
|
self.assertEqual(d[1, 1], 1)
|
||
|
|
d[1, 1] += 1
|
||
|
|
self.assertEqual(d[1, 1], 2)
|
||
|
|
del d[1, 1]
|
||
|
|
self.assertNotIn((1, 1), d)
|
||
|
|
# Simple slice
|
||
|
|
d[1:2] = 1
|
||
|
|
self.assertEqual(d[1:2], 1)
|
||
|
|
d[1:2] += 1
|
||
|
|
self.assertEqual(d[1:2], 2)
|
||
|
|
del d[1:2]
|
||
|
|
self.assertNotIn(slice(1, 2), d)
|
||
|
|
# Tuple of simple slices
|
||
|
|
d[1:2, 1:2] = 1
|
||
|
|
self.assertEqual(d[1:2, 1:2], 1)
|
||
|
|
d[1:2, 1:2] += 1
|
||
|
|
self.assertEqual(d[1:2, 1:2], 2)
|
||
|
|
del d[1:2, 1:2]
|
||
|
|
self.assertNotIn((slice(1, 2), slice(1, 2)), d)
|
||
|
|
# Extended slice
|
||
|
|
d[1:2:3] = 1
|
||
|
|
self.assertEqual(d[1:2:3], 1)
|
||
|
|
d[1:2:3] += 1
|
||
|
|
self.assertEqual(d[1:2:3], 2)
|
||
|
|
del d[1:2:3]
|
||
|
|
self.assertNotIn(slice(1, 2, 3), d)
|
||
|
|
# Tuple of extended slices
|
||
|
|
d[1:2:3, 1:2:3] = 1
|
||
|
|
self.assertEqual(d[1:2:3, 1:2:3], 1)
|
||
|
|
d[1:2:3, 1:2:3] += 1
|
||
|
|
self.assertEqual(d[1:2:3, 1:2:3], 2)
|
||
|
|
del d[1:2:3, 1:2:3]
|
||
|
|
self.assertNotIn((slice(1, 2, 3), slice(1, 2, 3)), d)
|
||
|
|
# Ellipsis
|
||
|
|
d[...] = 1
|
||
|
|
self.assertEqual(d[...], 1)
|
||
|
|
d[...] += 1
|
||
|
|
self.assertEqual(d[...], 2)
|
||
|
|
del d[...]
|
||
|
|
self.assertNotIn(Ellipsis, d)
|
||
|
|
# Tuple of Ellipses
|
||
|
|
d[..., ...] = 1
|
||
|
|
self.assertEqual(d[..., ...], 1)
|
||
|
|
d[..., ...] += 1
|
||
|
|
self.assertEqual(d[..., ...], 2)
|
||
|
|
del d[..., ...]
|
||
|
|
self.assertNotIn((Ellipsis, Ellipsis), d)
|
||
|
|
|
||
|
|
def test_annotation_limit(self):
|
||
|
|
# more than 255 annotations, should compile ok
|
||
|
|
s = "def f(%s): pass"
|
||
|
|
s %= ', '.join('a%d:%d' % (i,i) for i in range(300))
|
||
|
|
compile(s, '?', 'exec')
|
||
|
|
|
||
|
|
def test_mangling(self):
|
||
|
|
class A:
|
||
|
|
def f():
|
||
|
|
__mangled = 1
|
||
|
|
__not_mangled__ = 2
|
||
|
|
import __mangled_mod
|
||
|
|
import __package__.module
|
||
|
|
|
||
|
|
self.assertIn("_A__mangled", A.f.__code__.co_varnames)
|
||
|
|
self.assertIn("__not_mangled__", A.f.__code__.co_varnames)
|
||
|
|
self.assertIn("_A__mangled_mod", A.f.__code__.co_varnames)
|
||
|
|
self.assertIn("__package__", A.f.__code__.co_varnames)
|
||
|
|
|
||
|
|
def test_compile_ast(self):
|
||
|
|
fname = __file__
|
||
|
|
if fname.lower().endswith('pyc'):
|
||
|
|
fname = fname[:-1]
|
||
|
|
with open(fname, encoding='utf-8') as f:
|
||
|
|
fcontents = f.read()
|
||
|
|
sample_code = [
|
||
|
|
['<assign>', 'x = 5'],
|
||
|
|
['<ifblock>', """if True:\n pass\n"""],
|
||
|
|
['<forblock>', """for n in [1, 2, 3]:\n print(n)\n"""],
|
||
|
|
['<deffunc>', """def foo():\n pass\nfoo()\n"""],
|
||
|
|
[fname, fcontents],
|
||
|
|
]
|
||
|
|
|
||
|
|
for fname, code in sample_code:
|
||
|
|
co1 = compile(code, '%s1' % fname, 'exec')
|
||
|
|
ast = compile(code, '%s2' % fname, 'exec', _ast.PyCF_ONLY_AST)
|
||
|
|
self.assertTrue(type(ast) == _ast.Module)
|
||
|
|
co2 = compile(ast, '%s3' % fname, 'exec')
|
||
|
|
self.assertEqual(co1, co2)
|
||
|
|
# the code object's filename comes from the second compilation step
|
||
|
|
self.assertEqual(co2.co_filename, '%s3' % fname)
|
||
|
|
|
||
|
|
# raise exception when node type doesn't match with compile mode
|
||
|
|
co1 = compile('print(1)', '<string>', 'exec', _ast.PyCF_ONLY_AST)
|
||
|
|
self.assertRaises(TypeError, compile, co1, '<ast>', 'eval')
|
||
|
|
|
||
|
|
# raise exception when node type is no start node
|
||
|
|
self.assertRaises(TypeError, compile, _ast.If(), '<ast>', 'exec')
|
||
|
|
|
||
|
|
# raise exception when node has invalid children
|
||
|
|
ast = _ast.Module()
|
||
|
|
ast.body = [_ast.BoolOp()]
|
||
|
|
self.assertRaises(TypeError, compile, ast, '<ast>', 'exec')
|
||
|
|
|
||
|
|
def test_dict_evaluation_order(self):
|
||
|
|
i = 0
|
||
|
|
|
||
|
|
def f():
|
||
|
|
nonlocal i
|
||
|
|
i += 1
|
||
|
|
return i
|
||
|
|
|
||
|
|
d = {f(): f(), f(): f()}
|
||
|
|
self.assertEqual(d, {1: 2, 3: 4})
|
||
|
|
|
||
|
|
def test_compile_filename(self):
|
||
|
|
for filename in 'file.py', b'file.py':
|
||
|
|
code = compile('pass', filename, 'exec')
|
||
|
|
self.assertEqual(code.co_filename, 'file.py')
|
||
|
|
for filename in bytearray(b'file.py'), memoryview(b'file.py'):
|
||
|
|
with self.assertWarns(DeprecationWarning):
|
||
|
|
code = compile('pass', filename, 'exec')
|
||
|
|
self.assertEqual(code.co_filename, 'file.py')
|
||
|
|
self.assertRaises(TypeError, compile, 'pass', list(b'file.py'), 'exec')
|
||
|
|
|
||
|
|
@support.cpython_only
|
||
|
|
def test_same_filename_used(self):
|
||
|
|
s = """def f(): pass\ndef g(): pass"""
|
||
|
|
c = compile(s, "myfile", "exec")
|
||
|
|
for obj in c.co_consts:
|
||
|
|
if isinstance(obj, types.CodeType):
|
||
|
|
self.assertIs(obj.co_filename, c.co_filename)
|
||
|
|
|
||
|
|
def test_single_statement(self):
|
||
|
|
self.compile_single("1 + 2")
|
||
|
|
self.compile_single("\n1 + 2")
|
||
|
|
self.compile_single("1 + 2\n")
|
||
|
|
self.compile_single("1 + 2\n\n")
|
||
|
|
self.compile_single("1 + 2\t\t\n")
|
||
|
|
self.compile_single("1 + 2\t\t\n ")
|
||
|
|
self.compile_single("1 + 2 # one plus two")
|
||
|
|
self.compile_single("1; 2")
|
||
|
|
self.compile_single("import sys; sys")
|
||
|
|
self.compile_single("def f():\n pass")
|
||
|
|
self.compile_single("while False:\n pass")
|
||
|
|
self.compile_single("if x:\n f(x)")
|
||
|
|
self.compile_single("if x:\n f(x)\nelse:\n g(x)")
|
||
|
|
self.compile_single("class T:\n pass")
|
||
|
|
self.compile_single("c = '''\na=1\nb=2\nc=3\n'''")
|
||
|
|
|
||
|
|
def test_bad_single_statement(self):
|
||
|
|
self.assertInvalidSingle('1\n2')
|
||
|
|
self.assertInvalidSingle('def f(): pass')
|
||
|
|
self.assertInvalidSingle('a = 13\nb = 187')
|
||
|
|
self.assertInvalidSingle('del x\ndel y')
|
||
|
|
self.assertInvalidSingle('f()\ng()')
|
||
|
|
self.assertInvalidSingle('f()\n# blah\nblah()')
|
||
|
|
self.assertInvalidSingle('f()\nxy # blah\nblah()')
|
||
|
|
self.assertInvalidSingle('x = 5 # comment\nx = 6\n')
|
||
|
|
self.assertInvalidSingle("c = '''\nd=1\n'''\na = 1\n\nb = 2\n")
|
||
|
|
|
||
|
|
def test_particularly_evil_undecodable(self):
|
||
|
|
# Issue 24022
|
||
|
|
src = b'0000\x00\n00000000000\n\x00\n\x9e\n'
|
||
|
|
with tempfile.TemporaryDirectory() as tmpd:
|
||
|
|
fn = os.path.join(tmpd, "bad.py")
|
||
|
|
with open(fn, "wb") as fp:
|
||
|
|
fp.write(src)
|
||
|
|
res = script_helper.run_python_until_end(fn)[0]
|
||
|
|
self.assertIn(b"Non-UTF-8", res.err)
|
||
|
|
|
||
|
|
def test_yet_more_evil_still_undecodable(self):
|
||
|
|
# Issue #25388
|
||
|
|
src = b"#\x00\n#\xfd\n"
|
||
|
|
with tempfile.TemporaryDirectory() as tmpd:
|
||
|
|
fn = os.path.join(tmpd, "bad.py")
|
||
|
|
with open(fn, "wb") as fp:
|
||
|
|
fp.write(src)
|
||
|
|
res = script_helper.run_python_until_end(fn)[0]
|
||
|
|
self.assertIn(b"Non-UTF-8", res.err)
|
||
|
|
|
||
|
|
@support.cpython_only
|
||
|
|
def test_compiler_recursion_limit(self):
|
||
|
|
# Expected limit is sys.getrecursionlimit() * the scaling factor
|
||
|
|
# in symtable.c (currently 3)
|
||
|
|
# We expect to fail *at* that limit, because we use up some of
|
||
|
|
# the stack depth limit in the test suite code
|
||
|
|
# So we check the expected limit and 75% of that
|
||
|
|
# XXX (ncoghlan): duplicating the scaling factor here is a little
|
||
|
|
# ugly. Perhaps it should be exposed somewhere...
|
||
|
|
fail_depth = sys.getrecursionlimit() * 3
|
||
|
|
crash_depth = sys.getrecursionlimit() * 300
|
||
|
|
success_depth = int(fail_depth * 0.75)
|
||
|
|
|
||
|
|
def check_limit(prefix, repeated, mode="single"):
|
||
|
|
expect_ok = prefix + repeated * success_depth
|
||
|
|
compile(expect_ok, '<test>', mode)
|
||
|
|
for depth in (fail_depth, crash_depth):
|
||
|
|
broken = prefix + repeated * depth
|
||
|
|
details = "Compiling ({!r} + {!r} * {})".format(
|
||
|
|
prefix, repeated, depth)
|
||
|
|
with self.assertRaises(RecursionError, msg=details):
|
||
|
|
compile(broken, '<test>', mode)
|
||
|
|
|
||
|
|
check_limit("a", "()")
|
||
|
|
check_limit("a", ".b")
|
||
|
|
check_limit("a", "[0]")
|
||
|
|
check_limit("a", "*a")
|
||
|
|
# XXX Crashes in the parser.
|
||
|
|
# check_limit("a", " if a else a")
|
||
|
|
# check_limit("if a: pass", "\nelif a: pass", mode="exec")
|
||
|
|
|
||
|
|
def test_null_terminated(self):
|
||
|
|
# The source code is null-terminated internally, but bytes-like
|
||
|
|
# objects are accepted, which could be not terminated.
|
||
|
|
with self.assertRaisesRegex(ValueError, "cannot contain null"):
|
||
|
|
compile("123\x00", "<dummy>", "eval")
|
||
|
|
with self.assertRaisesRegex(ValueError, "cannot contain null"):
|
||
|
|
compile(memoryview(b"123\x00"), "<dummy>", "eval")
|
||
|
|
code = compile(memoryview(b"123\x00")[1:-1], "<dummy>", "eval")
|
||
|
|
self.assertEqual(eval(code), 23)
|
||
|
|
code = compile(memoryview(b"1234")[1:-1], "<dummy>", "eval")
|
||
|
|
self.assertEqual(eval(code), 23)
|
||
|
|
code = compile(memoryview(b"$23$")[1:-1], "<dummy>", "eval")
|
||
|
|
self.assertEqual(eval(code), 23)
|
||
|
|
|
||
|
|
# Also test when eval() and exec() do the compilation step
|
||
|
|
self.assertEqual(eval(memoryview(b"1234")[1:-1]), 23)
|
||
|
|
namespace = dict()
|
||
|
|
exec(memoryview(b"ax = 123")[1:-1], namespace)
|
||
|
|
self.assertEqual(namespace['x'], 12)
|
||
|
|
|
||
|
|
def check_constant(self, func, expected):
|
||
|
|
for const in func.__code__.co_consts:
|
||
|
|
if repr(const) == repr(expected):
|
||
|
|
break
|
||
|
|
else:
|
||
|
|
self.fail("unable to find constant %r in %r"
|
||
|
|
% (expected, func.__code__.co_consts))
|
||
|
|
|
||
|
|
# Merging equal constants is not a strict requirement for the Python
|
||
|
|
# semantics, it's a more an implementation detail.
|
||
|
|
@support.cpython_only
|
||
|
|
def test_merge_constants(self):
|
||
|
|
# Issue #25843: compile() must merge constants which are equal
|
||
|
|
# and have the same type.
|
||
|
|
|
||
|
|
def check_same_constant(const):
|
||
|
|
ns = {}
|
||
|
|
code = "f1, f2 = lambda: %r, lambda: %r" % (const, const)
|
||
|
|
exec(code, ns)
|
||
|
|
f1 = ns['f1']
|
||
|
|
f2 = ns['f2']
|
||
|
|
self.assertIs(f1.__code__, f2.__code__)
|
||
|
|
self.check_constant(f1, const)
|
||
|
|
self.assertEqual(repr(f1()), repr(const))
|
||
|
|
|
||
|
|
check_same_constant(None)
|
||
|
|
check_same_constant(0)
|
||
|
|
check_same_constant(0.0)
|
||
|
|
check_same_constant(b'abc')
|
||
|
|
check_same_constant('abc')
|
||
|
|
|
||
|
|
# Note: "lambda: ..." emits "LOAD_CONST Ellipsis",
|
||
|
|
# whereas "lambda: Ellipsis" emits "LOAD_GLOBAL Ellipsis"
|
||
|
|
f1, f2 = lambda: ..., lambda: ...
|
||
|
|
self.assertIs(f1.__code__, f2.__code__)
|
||
|
|
self.check_constant(f1, Ellipsis)
|
||
|
|
self.assertEqual(repr(f1()), repr(Ellipsis))
|
||
|
|
|
||
|
|
# Merge constants in tuple or frozenset
|
||
|
|
f1, f2 = lambda: "not a name", lambda: ("not a name",)
|
||
|
|
f3 = lambda x: x in {("not a name",)}
|
||
|
|
self.assertIs(f1.__code__.co_consts[1],
|
||
|
|
f2.__code__.co_consts[1][0])
|
||
|
|
self.assertIs(next(iter(f3.__code__.co_consts[1])),
|
||
|
|
f2.__code__.co_consts[1])
|
||
|
|
|
||
|
|
# {0} is converted to a constant frozenset({0}) by the peephole
|
||
|
|
# optimizer
|
||
|
|
f1, f2 = lambda x: x in {0}, lambda x: x in {0}
|
||
|
|
self.assertIs(f1.__code__, f2.__code__)
|
||
|
|
self.check_constant(f1, frozenset({0}))
|
||
|
|
self.assertTrue(f1(0))
|
||
|
|
|
||
|
|
# Merging equal co_linetable and co_code is not a strict requirement
|
||
|
|
# for the Python semantics, it's a more an implementation detail.
|
||
|
|
@support.cpython_only
|
||
|
|
def test_merge_code_attrs(self):
|
||
|
|
# See https://bugs.python.org/issue42217
|
||
|
|
f1 = lambda x: x.y.z
|
||
|
|
f2 = lambda a: a.b.c
|
||
|
|
|
||
|
|
self.assertIs(f1.__code__.co_linetable, f2.__code__.co_linetable)
|
||
|
|
self.assertIs(f1.__code__.co_code, f2.__code__.co_code)
|
||
|
|
|
||
|
|
# Stripping unused constants is not a strict requirement for the
|
||
|
|
# Python semantics, it's a more an implementation detail.
|
||
|
|
@support.cpython_only
|
||
|
|
def test_strip_unused_consts(self):
|
||
|
|
# Python 3.10rc1 appended None to co_consts when None is not used
|
||
|
|
# at all. See bpo-45056.
|
||
|
|
def f1():
|
||
|
|
"docstring"
|
||
|
|
return 42
|
||
|
|
self.assertEqual(f1.__code__.co_consts, ("docstring", 42))
|
||
|
|
|
||
|
|
# This is a regression test for a CPython specific peephole optimizer
|
||
|
|
# implementation bug present in a few releases. It's assertion verifies
|
||
|
|
# that peephole optimization was actually done though that isn't an
|
||
|
|
# indication of the bugs presence or not (crashing is).
|
||
|
|
@support.cpython_only
|
||
|
|
def test_peephole_opt_unreachable_code_array_access_in_bounds(self):
|
||
|
|
"""Regression test for issue35193 when run under clang msan."""
|
||
|
|
def unused_code_at_end():
|
||
|
|
return 3
|
||
|
|
raise RuntimeError("unreachable")
|
||
|
|
# The above function definition will trigger the out of bounds
|
||
|
|
# bug in the peephole optimizer as it scans opcodes past the
|
||
|
|
# RETURN_VALUE opcode. This does not always crash an interpreter.
|
||
|
|
# When you build with the clang memory sanitizer it reliably aborts.
|
||
|
|
self.assertEqual(
|
||
|
|
'RETURN_VALUE',
|
||
|
|
list(dis.get_instructions(unused_code_at_end))[-1].opname)
|
||
|
|
|
||
|
|
def test_dont_merge_constants(self):
|
||
|
|
# Issue #25843: compile() must not merge constants which are equal
|
||
|
|
# but have a different type.
|
||
|
|
|
||
|
|
def check_different_constants(const1, const2):
|
||
|
|
ns = {}
|
||
|
|
exec("f1, f2 = lambda: %r, lambda: %r" % (const1, const2), ns)
|
||
|
|
f1 = ns['f1']
|
||
|
|
f2 = ns['f2']
|
||
|
|
self.assertIsNot(f1.__code__, f2.__code__)
|
||
|
|
self.assertNotEqual(f1.__code__, f2.__code__)
|
||
|
|
self.check_constant(f1, const1)
|
||
|
|
self.check_constant(f2, const2)
|
||
|
|
self.assertEqual(repr(f1()), repr(const1))
|
||
|
|
self.assertEqual(repr(f2()), repr(const2))
|
||
|
|
|
||
|
|
check_different_constants(0, 0.0)
|
||
|
|
check_different_constants(+0.0, -0.0)
|
||
|
|
check_different_constants((0,), (0.0,))
|
||
|
|
check_different_constants('a', b'a')
|
||
|
|
check_different_constants(('a',), (b'a',))
|
||
|
|
|
||
|
|
# check_different_constants() cannot be used because repr(-0j) is
|
||
|
|
# '(-0-0j)', but when '(-0-0j)' is evaluated to 0j: we loose the sign.
|
||
|
|
f1, f2 = lambda: +0.0j, lambda: -0.0j
|
||
|
|
self.assertIsNot(f1.__code__, f2.__code__)
|
||
|
|
self.check_constant(f1, +0.0j)
|
||
|
|
self.check_constant(f2, -0.0j)
|
||
|
|
self.assertEqual(repr(f1()), repr(+0.0j))
|
||
|
|
self.assertEqual(repr(f2()), repr(-0.0j))
|
||
|
|
|
||
|
|
# {0} is converted to a constant frozenset({0}) by the peephole
|
||
|
|
# optimizer
|
||
|
|
f1, f2 = lambda x: x in {0}, lambda x: x in {0.0}
|
||
|
|
self.assertIsNot(f1.__code__, f2.__code__)
|
||
|
|
self.check_constant(f1, frozenset({0}))
|
||
|
|
self.check_constant(f2, frozenset({0.0}))
|
||
|
|
self.assertTrue(f1(0))
|
||
|
|
self.assertTrue(f2(0.0))
|
||
|
|
|
||
|
|
def test_path_like_objects(self):
|
||
|
|
# An implicit test for PyUnicode_FSDecoder().
|
||
|
|
compile("42", FakePath("test_compile_pathlike"), "single")
|
||
|
|
|
||
|
|
def test_stack_overflow(self):
|
||
|
|
# bpo-31113: Stack overflow when compile a long sequence of
|
||
|
|
# complex statements.
|
||
|
|
compile("if a: b\n" * 200000, "<dummy>", "exec")
|
||
|
|
|
||
|
|
# Multiple users rely on the fact that CPython does not generate
|
||
|
|
# bytecode for dead code blocks. See bpo-37500 for more context.
|
||
|
|
@support.cpython_only
|
||
|
|
def test_dead_blocks_do_not_generate_bytecode(self):
|
||
|
|
def unused_block_if():
|
||
|
|
if 0:
|
||
|
|
return 42
|
||
|
|
|
||
|
|
def unused_block_while():
|
||
|
|
while 0:
|
||
|
|
return 42
|
||
|
|
|
||
|
|
def unused_block_if_else():
|
||
|
|
if 1:
|
||
|
|
return None
|
||
|
|
else:
|
||
|
|
return 42
|
||
|
|
|
||
|
|
def unused_block_while_else():
|
||
|
|
while 1:
|
||
|
|
return None
|
||
|
|
else:
|
||
|
|
return 42
|
||
|
|
|
||
|
|
funcs = [unused_block_if, unused_block_while,
|
||
|
|
unused_block_if_else, unused_block_while_else]
|
||
|
|
|
||
|
|
for func in funcs:
|
||
|
|
opcodes = list(dis.get_instructions(func))
|
||
|
|
self.assertLessEqual(len(opcodes), 3)
|
||
|
|
self.assertEqual('LOAD_CONST', opcodes[-2].opname)
|
||
|
|
self.assertEqual(None, opcodes[-2].argval)
|
||
|
|
self.assertEqual('RETURN_VALUE', opcodes[-1].opname)
|
||
|
|
|
||
|
|
def test_false_while_loop(self):
|
||
|
|
def break_in_while():
|
||
|
|
while False:
|
||
|
|
break
|
||
|
|
|
||
|
|
def continue_in_while():
|
||
|
|
while False:
|
||
|
|
continue
|
||
|
|
|
||
|
|
funcs = [break_in_while, continue_in_while]
|
||
|
|
|
||
|
|
# Check that we did not raise but we also don't generate bytecode
|
||
|
|
for func in funcs:
|
||
|
|
opcodes = list(dis.get_instructions(func))
|
||
|
|
self.assertEqual(2, len(opcodes))
|
||
|
|
self.assertEqual('LOAD_CONST', opcodes[0].opname)
|
||
|
|
self.assertEqual(None, opcodes[0].argval)
|
||
|
|
self.assertEqual('RETURN_VALUE', opcodes[1].opname)
|
||
|
|
|
||
|
|
def test_consts_in_conditionals(self):
|
||
|
|
def and_true(x):
|
||
|
|
return True and x
|
||
|
|
|
||
|
|
def and_false(x):
|
||
|
|
return False and x
|
||
|
|
|
||
|
|
def or_true(x):
|
||
|
|
return True or x
|
||
|
|
|
||
|
|
def or_false(x):
|
||
|
|
return False or x
|
||
|
|
|
||
|
|
funcs = [and_true, and_false, or_true, or_false]
|
||
|
|
|
||
|
|
# Check that condition is removed.
|
||
|
|
for func in funcs:
|
||
|
|
with self.subTest(func=func):
|
||
|
|
opcodes = list(dis.get_instructions(func))
|
||
|
|
self.assertEqual(2, len(opcodes))
|
||
|
|
self.assertIn('LOAD_', opcodes[0].opname)
|
||
|
|
self.assertEqual('RETURN_VALUE', opcodes[1].opname)
|
||
|
|
|
||
|
|
def test_lineno_procedure_call(self):
|
||
|
|
def call():
|
||
|
|
(
|
||
|
|
print()
|
||
|
|
)
|
||
|
|
line1 = call.__code__.co_firstlineno + 1
|
||
|
|
assert line1 not in [line for (_, _, line) in call.__code__.co_lines()]
|
||
|
|
|
||
|
|
def test_lineno_after_implicit_return(self):
|
||
|
|
TRUE = True
|
||
|
|
# Don't use constant True or False, as compiler will remove test
|
||
|
|
def if1(x):
|
||
|
|
x()
|
||
|
|
if TRUE:
|
||
|
|
pass
|
||
|
|
def if2(x):
|
||
|
|
x()
|
||
|
|
if TRUE:
|
||
|
|
pass
|
||
|
|
else:
|
||
|
|
pass
|
||
|
|
def if3(x):
|
||
|
|
x()
|
||
|
|
if TRUE:
|
||
|
|
pass
|
||
|
|
else:
|
||
|
|
return None
|
||
|
|
def if4(x):
|
||
|
|
x()
|
||
|
|
if not TRUE:
|
||
|
|
pass
|
||
|
|
funcs = [ if1, if2, if3, if4]
|
||
|
|
lastlines = [ 3, 3, 3, 2]
|
||
|
|
frame = None
|
||
|
|
def save_caller_frame():
|
||
|
|
nonlocal frame
|
||
|
|
frame = sys._getframe(1)
|
||
|
|
for func, lastline in zip(funcs, lastlines, strict=True):
|
||
|
|
with self.subTest(func=func):
|
||
|
|
func(save_caller_frame)
|
||
|
|
self.assertEqual(frame.f_lineno-frame.f_code.co_firstlineno, lastline)
|
||
|
|
|
||
|
|
def test_lineno_after_no_code(self):
|
||
|
|
def no_code1():
|
||
|
|
"doc string"
|
||
|
|
|
||
|
|
def no_code2():
|
||
|
|
a: int
|
||
|
|
|
||
|
|
for func in (no_code1, no_code2):
|
||
|
|
with self.subTest(func=func):
|
||
|
|
code = func.__code__
|
||
|
|
lines = list(code.co_lines())
|
||
|
|
self.assertEqual(len(lines), 1)
|
||
|
|
start, end, line = lines[0]
|
||
|
|
self.assertEqual(start, 0)
|
||
|
|
self.assertEqual(end, len(code.co_code))
|
||
|
|
self.assertEqual(line, code.co_firstlineno)
|
||
|
|
|
||
|
|
def test_lineno_attribute(self):
|
||
|
|
def load_attr():
|
||
|
|
return (
|
||
|
|
o.
|
||
|
|
a
|
||
|
|
)
|
||
|
|
load_attr_lines = [ 2, 3, 1 ]
|
||
|
|
|
||
|
|
def load_method():
|
||
|
|
return (
|
||
|
|
o.
|
||
|
|
m(
|
||
|
|
0
|
||
|
|
)
|
||
|
|
)
|
||
|
|
load_method_lines = [ 2, 3, 4, 3, 1 ]
|
||
|
|
|
||
|
|
def store_attr():
|
||
|
|
(
|
||
|
|
o.
|
||
|
|
a
|
||
|
|
) = (
|
||
|
|
v
|
||
|
|
)
|
||
|
|
store_attr_lines = [ 5, 2, 3 ]
|
||
|
|
|
||
|
|
def aug_store_attr():
|
||
|
|
(
|
||
|
|
o.
|
||
|
|
a
|
||
|
|
) += (
|
||
|
|
v
|
||
|
|
)
|
||
|
|
aug_store_attr_lines = [ 2, 3, 5, 1, 3 ]
|
||
|
|
|
||
|
|
funcs = [ load_attr, load_method, store_attr, aug_store_attr]
|
||
|
|
func_lines = [ load_attr_lines, load_method_lines,
|
||
|
|
store_attr_lines, aug_store_attr_lines]
|
||
|
|
|
||
|
|
for func, lines in zip(funcs, func_lines, strict=True):
|
||
|
|
with self.subTest(func=func):
|
||
|
|
code_lines = [ line-func.__code__.co_firstlineno
|
||
|
|
for (_, _, line) in func.__code__.co_lines() ]
|
||
|
|
self.assertEqual(lines, code_lines)
|
||
|
|
|
||
|
|
def test_line_number_genexp(self):
|
||
|
|
|
||
|
|
def return_genexp():
|
||
|
|
return (1
|
||
|
|
for
|
||
|
|
x
|
||
|
|
in
|
||
|
|
y)
|
||
|
|
genexp_lines = [None, 1, 3, 1]
|
||
|
|
|
||
|
|
genexp_code = return_genexp.__code__.co_consts[1]
|
||
|
|
code_lines = [ None if line is None else line-return_genexp.__code__.co_firstlineno
|
||
|
|
for (_, _, line) in genexp_code.co_lines() ]
|
||
|
|
self.assertEqual(genexp_lines, code_lines)
|
||
|
|
|
||
|
|
def test_line_number_implicit_return_after_async_for(self):
|
||
|
|
|
||
|
|
async def test(aseq):
|
||
|
|
async for i in aseq:
|
||
|
|
body
|
||
|
|
|
||
|
|
expected_lines = [None, 1, 2, 1]
|
||
|
|
code_lines = [ None if line is None else line-test.__code__.co_firstlineno
|
||
|
|
for (_, _, line) in test.__code__.co_lines() ]
|
||
|
|
self.assertEqual(expected_lines, code_lines)
|
||
|
|
|
||
|
|
def test_big_dict_literal(self):
|
||
|
|
# The compiler has a flushing point in "compiler_dict" that calls compiles
|
||
|
|
# a portion of the dictionary literal when the loop that iterates over the items
|
||
|
|
# reaches 0xFFFF elements but the code was not including the boundary element,
|
||
|
|
# dropping the key at position 0xFFFF. See bpo-41531 for more information
|
||
|
|
|
||
|
|
dict_size = 0xFFFF + 1
|
||
|
|
the_dict = "{" + ",".join(f"{x}:{x}" for x in range(dict_size)) + "}"
|
||
|
|
self.assertEqual(len(eval(the_dict)), dict_size)
|
||
|
|
|
||
|
|
def test_redundant_jump_in_if_else_break(self):
|
||
|
|
# Check if bytecode containing jumps that simply point to the next line
|
||
|
|
# is generated around if-else-break style structures. See bpo-42615.
|
||
|
|
|
||
|
|
def if_else_break():
|
||
|
|
val = 1
|
||
|
|
while True:
|
||
|
|
if val > 0:
|
||
|
|
val -= 1
|
||
|
|
else:
|
||
|
|
break
|
||
|
|
val = -1
|
||
|
|
|
||
|
|
INSTR_SIZE = 2
|
||
|
|
HANDLED_JUMPS = (
|
||
|
|
'POP_JUMP_IF_FALSE',
|
||
|
|
'POP_JUMP_IF_TRUE',
|
||
|
|
'JUMP_ABSOLUTE',
|
||
|
|
'JUMP_FORWARD',
|
||
|
|
)
|
||
|
|
|
||
|
|
for line, instr in enumerate(dis.Bytecode(if_else_break)):
|
||
|
|
if instr.opname == 'JUMP_FORWARD':
|
||
|
|
self.assertNotEqual(instr.arg, 0)
|
||
|
|
elif instr.opname in HANDLED_JUMPS:
|
||
|
|
self.assertNotEqual(instr.arg, (line + 1)*INSTR_SIZE)
|
||
|
|
|
||
|
|
|
||
|
|
class TestExpressionStackSize(unittest.TestCase):
|
||
|
|
# These tests check that the computed stack size for a code object
|
||
|
|
# stays within reasonable bounds (see issue #21523 for an example
|
||
|
|
# dysfunction).
|
||
|
|
N = 100
|
||
|
|
|
||
|
|
def check_stack_size(self, code):
|
||
|
|
# To assert that the alleged stack size is not O(N), we
|
||
|
|
# check that it is smaller than log(N).
|
||
|
|
if isinstance(code, str):
|
||
|
|
code = compile(code, "<foo>", "single")
|
||
|
|
max_size = math.ceil(math.log(len(code.co_code)))
|
||
|
|
self.assertLessEqual(code.co_stacksize, max_size)
|
||
|
|
|
||
|
|
def test_and(self):
|
||
|
|
self.check_stack_size("x and " * self.N + "x")
|
||
|
|
|
||
|
|
def test_or(self):
|
||
|
|
self.check_stack_size("x or " * self.N + "x")
|
||
|
|
|
||
|
|
def test_and_or(self):
|
||
|
|
self.check_stack_size("x and x or " * self.N + "x")
|
||
|
|
|
||
|
|
def test_chained_comparison(self):
|
||
|
|
self.check_stack_size("x < " * self.N + "x")
|
||
|
|
|
||
|
|
def test_if_else(self):
|
||
|
|
self.check_stack_size("x if x else " * self.N + "x")
|
||
|
|
|
||
|
|
def test_binop(self):
|
||
|
|
self.check_stack_size("x + " * self.N + "x")
|
||
|
|
|
||
|
|
def test_list(self):
|
||
|
|
self.check_stack_size("[" + "x, " * self.N + "x]")
|
||
|
|
|
||
|
|
def test_tuple(self):
|
||
|
|
self.check_stack_size("(" + "x, " * self.N + "x)")
|
||
|
|
|
||
|
|
def test_set(self):
|
||
|
|
self.check_stack_size("{" + "x, " * self.N + "x}")
|
||
|
|
|
||
|
|
def test_dict(self):
|
||
|
|
self.check_stack_size("{" + "x:x, " * self.N + "x:x}")
|
||
|
|
|
||
|
|
def test_func_args(self):
|
||
|
|
self.check_stack_size("f(" + "x, " * self.N + ")")
|
||
|
|
|
||
|
|
def test_func_kwargs(self):
|
||
|
|
kwargs = (f'a{i}=x' for i in range(self.N))
|
||
|
|
self.check_stack_size("f(" + ", ".join(kwargs) + ")")
|
||
|
|
|
||
|
|
def test_meth_args(self):
|
||
|
|
self.check_stack_size("o.m(" + "x, " * self.N + ")")
|
||
|
|
|
||
|
|
def test_meth_kwargs(self):
|
||
|
|
kwargs = (f'a{i}=x' for i in range(self.N))
|
||
|
|
self.check_stack_size("o.m(" + ", ".join(kwargs) + ")")
|
||
|
|
|
||
|
|
def test_func_and(self):
|
||
|
|
code = "def f(x):\n"
|
||
|
|
code += " x and x\n" * self.N
|
||
|
|
self.check_stack_size(code)
|
||
|
|
|
||
|
|
|
||
|
|
class TestStackSizeStability(unittest.TestCase):
|
||
|
|
# Check that repeating certain snippets doesn't increase the stack size
|
||
|
|
# beyond what a single snippet requires.
|
||
|
|
|
||
|
|
def check_stack_size(self, snippet, async_=False):
|
||
|
|
def compile_snippet(i):
|
||
|
|
ns = {}
|
||
|
|
script = """def func():\n""" + i * snippet
|
||
|
|
if async_:
|
||
|
|
script = "async " + script
|
||
|
|
code = compile(script, "<script>", "exec")
|
||
|
|
exec(code, ns, ns)
|
||
|
|
return ns['func'].__code__
|
||
|
|
|
||
|
|
sizes = [compile_snippet(i).co_stacksize for i in range(2, 5)]
|
||
|
|
if len(set(sizes)) != 1:
|
||
|
|
import dis, io
|
||
|
|
out = io.StringIO()
|
||
|
|
dis.dis(compile_snippet(1), file=out)
|
||
|
|
self.fail("stack sizes diverge with # of consecutive snippets: "
|
||
|
|
"%s\n%s\n%s" % (sizes, snippet, out.getvalue()))
|
||
|
|
|
||
|
|
def test_if(self):
|
||
|
|
snippet = """
|
||
|
|
if x:
|
||
|
|
a
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_if_else(self):
|
||
|
|
snippet = """
|
||
|
|
if x:
|
||
|
|
a
|
||
|
|
elif y:
|
||
|
|
b
|
||
|
|
else:
|
||
|
|
c
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_try_except_bare(self):
|
||
|
|
snippet = """
|
||
|
|
try:
|
||
|
|
a
|
||
|
|
except:
|
||
|
|
b
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_try_except_qualified(self):
|
||
|
|
snippet = """
|
||
|
|
try:
|
||
|
|
a
|
||
|
|
except ImportError:
|
||
|
|
b
|
||
|
|
except:
|
||
|
|
c
|
||
|
|
else:
|
||
|
|
d
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_try_except_as(self):
|
||
|
|
snippet = """
|
||
|
|
try:
|
||
|
|
a
|
||
|
|
except ImportError as e:
|
||
|
|
b
|
||
|
|
except:
|
||
|
|
c
|
||
|
|
else:
|
||
|
|
d
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_try_finally(self):
|
||
|
|
snippet = """
|
||
|
|
try:
|
||
|
|
a
|
||
|
|
finally:
|
||
|
|
b
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_with(self):
|
||
|
|
snippet = """
|
||
|
|
with x as y:
|
||
|
|
a
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_while_else(self):
|
||
|
|
snippet = """
|
||
|
|
while x:
|
||
|
|
a
|
||
|
|
else:
|
||
|
|
b
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_for(self):
|
||
|
|
snippet = """
|
||
|
|
for x in y:
|
||
|
|
a
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_for_else(self):
|
||
|
|
snippet = """
|
||
|
|
for x in y:
|
||
|
|
a
|
||
|
|
else:
|
||
|
|
b
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_for_break_continue(self):
|
||
|
|
snippet = """
|
||
|
|
for x in y:
|
||
|
|
if z:
|
||
|
|
break
|
||
|
|
elif u:
|
||
|
|
continue
|
||
|
|
else:
|
||
|
|
a
|
||
|
|
else:
|
||
|
|
b
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_for_break_continue_inside_try_finally_block(self):
|
||
|
|
snippet = """
|
||
|
|
for x in y:
|
||
|
|
try:
|
||
|
|
if z:
|
||
|
|
break
|
||
|
|
elif u:
|
||
|
|
continue
|
||
|
|
else:
|
||
|
|
a
|
||
|
|
finally:
|
||
|
|
f
|
||
|
|
else:
|
||
|
|
b
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_for_break_continue_inside_finally_block(self):
|
||
|
|
snippet = """
|
||
|
|
for x in y:
|
||
|
|
try:
|
||
|
|
t
|
||
|
|
finally:
|
||
|
|
if z:
|
||
|
|
break
|
||
|
|
elif u:
|
||
|
|
continue
|
||
|
|
else:
|
||
|
|
a
|
||
|
|
else:
|
||
|
|
b
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_for_break_continue_inside_except_block(self):
|
||
|
|
snippet = """
|
||
|
|
for x in y:
|
||
|
|
try:
|
||
|
|
t
|
||
|
|
except:
|
||
|
|
if z:
|
||
|
|
break
|
||
|
|
elif u:
|
||
|
|
continue
|
||
|
|
else:
|
||
|
|
a
|
||
|
|
else:
|
||
|
|
b
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_for_break_continue_inside_with_block(self):
|
||
|
|
snippet = """
|
||
|
|
for x in y:
|
||
|
|
with c:
|
||
|
|
if z:
|
||
|
|
break
|
||
|
|
elif u:
|
||
|
|
continue
|
||
|
|
else:
|
||
|
|
a
|
||
|
|
else:
|
||
|
|
b
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_return_inside_try_finally_block(self):
|
||
|
|
snippet = """
|
||
|
|
try:
|
||
|
|
if z:
|
||
|
|
return
|
||
|
|
else:
|
||
|
|
a
|
||
|
|
finally:
|
||
|
|
f
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_return_inside_finally_block(self):
|
||
|
|
snippet = """
|
||
|
|
try:
|
||
|
|
t
|
||
|
|
finally:
|
||
|
|
if z:
|
||
|
|
return
|
||
|
|
else:
|
||
|
|
a
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_return_inside_except_block(self):
|
||
|
|
snippet = """
|
||
|
|
try:
|
||
|
|
t
|
||
|
|
except:
|
||
|
|
if z:
|
||
|
|
return
|
||
|
|
else:
|
||
|
|
a
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_return_inside_with_block(self):
|
||
|
|
snippet = """
|
||
|
|
with c:
|
||
|
|
if z:
|
||
|
|
return
|
||
|
|
else:
|
||
|
|
a
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet)
|
||
|
|
|
||
|
|
def test_async_with(self):
|
||
|
|
snippet = """
|
||
|
|
async with x as y:
|
||
|
|
a
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet, async_=True)
|
||
|
|
|
||
|
|
def test_async_for(self):
|
||
|
|
snippet = """
|
||
|
|
async for x in y:
|
||
|
|
a
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet, async_=True)
|
||
|
|
|
||
|
|
def test_async_for_else(self):
|
||
|
|
snippet = """
|
||
|
|
async for x in y:
|
||
|
|
a
|
||
|
|
else:
|
||
|
|
b
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet, async_=True)
|
||
|
|
|
||
|
|
def test_for_break_continue_inside_async_with_block(self):
|
||
|
|
snippet = """
|
||
|
|
for x in y:
|
||
|
|
async with c:
|
||
|
|
if z:
|
||
|
|
break
|
||
|
|
elif u:
|
||
|
|
continue
|
||
|
|
else:
|
||
|
|
a
|
||
|
|
else:
|
||
|
|
b
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet, async_=True)
|
||
|
|
|
||
|
|
def test_return_inside_async_with_block(self):
|
||
|
|
snippet = """
|
||
|
|
async with c:
|
||
|
|
if z:
|
||
|
|
return
|
||
|
|
else:
|
||
|
|
a
|
||
|
|
"""
|
||
|
|
self.check_stack_size(snippet, async_=True)
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
unittest.main()
|