jsi = JSInterpreter('function x(){return 1236566549 << 5}')
self.assertEqual(jsi.call_function('x'), 915423904)
+ def test_bitwise_operators_typecast(self):
+ jsi = JSInterpreter('function x(){return null << 5}')
+ self.assertEqual(jsi.call_function('x'), 0)
+
+ jsi = JSInterpreter('function x(){return undefined >> 5}')
+ self.assertEqual(jsi.call_function('x'), 0)
+
+ jsi = JSInterpreter('function x(){return 42 << NaN}')
+ self.assertEqual(jsi.call_function('x'), 42)
+
def test_negative(self):
jsi = JSInterpreter("function f(){return 2 * -2.0;}")
self.assertEqual(jsi.call_function('f'), -4)
'https://www.youtube.com/s/player/6f20102c/player_ias.vflset/en_US/base.js',
'lE8DhoDmKqnmJJ', 'pJTTX6XyJP2BYw',
),
+ (
+ 'https://www.youtube.com/s/player/cfa9e7cb/player_ias.vflset/en_US/base.js',
+ 'aCi3iElgd2kq0bxVbQ', 'QX1y8jGb2IbZ0w',
+ ),
]
def _js_bit_op(op):
def zeroise(x):
- return 0 if x in (None, JS_Undefined) else x
+ if x in (None, JS_Undefined):
+ return 0
+ with contextlib.suppress(TypeError):
+ if math.isnan(x): # NB: NaN cannot be checked by membership
+ return 0
+ return x
def wrapped(a, b):
return op(zeroise(a), zeroise(b)) & 0xffffffff