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[JSInterp] Reorganise some declarations to align better with yt-dlp

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This commit is contained in:
dirkf 2025-04-04 12:15:38 +01:00
parent 1b8fbad7c5
commit a12bb9d4bd
2 changed files with 31 additions and 30 deletions
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39
test/test_jsinterp.py
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@ -7,6 +7,7 @@ from __future__ import unicode_literals
import os
import sys
import unittest
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
import math
@ -146,6 +147,25 @@ class TestJSInterpreter(unittest.TestCase):
# https://github.com/ytdl-org/youtube-dl/issues/32815
self._test('function f(){return 0 - 7 * - 6;}', 42)
def test_bitwise_operators_typecast(self):
# madness
self._test('function f(){return null << 5}', 0)
self._test('function f(){return undefined >> 5}', 0)
self._test('function f(){return 42 << NaN}', 42)
self._test('function f(){return 42 << Infinity}', 42)
self._test('function f(){return 0.0 << null}', 0)
self._test('function f(){return NaN << 42}', 0)
self._test('function f(){return "21.9" << 1}', 42)
self._test('function f(){return true << "5";}', 32)
self._test('function f(){return true << true;}', 2)
self._test('function f(){return "19" & "21.9";}', 17)
self._test('function f(){return "19" & false;}', 0)
self._test('function f(){return "11.0" >> "2.1";}', 2)
self._test('function f(){return 5 ^ 9;}', 12)
self._test('function f(){return 0.0 << NaN}', 0)
self._test('function f(){return null << undefined}', 0)
self._test('function f(){return 21 << 4294967297}', 42)
def test_array_access(self):
self._test('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2.0] = 7; return x;}', [5, 2, 7])
@ -482,25 +502,6 @@ class TestJSInterpreter(unittest.TestCase):
self._test('function f(){return -524999584 << 5}', 379882496)
self._test('function f(){return 1236566549 << 5}', 915423904)
def test_bitwise_operators_typecast(self):
# madness
self._test('function f(){return null << 5}', 0)
self._test('function f(){return undefined >> 5}', 0)
self._test('function f(){return 42 << NaN}', 42)
self._test('function f(){return 42 << Infinity}', 42)
self._test('function f(){return 0.0 << null}', 0)
self._test('function f(){return NaN << 42}', 0)
self._test('function f(){return "21.9" << 1}', 42)
self._test('function f(){return 21 << 4294967297}', 42)
self._test('function f(){return true << "5";}', 32)
self._test('function f(){return true << true;}', 2)
self._test('function f(){return "19" & "21.9";}', 17)
self._test('function f(){return "19" & false;}', 0)
self._test('function f(){return "11.0" >> "2.1";}', 2)
self._test('function f(){return 5 ^ 9;}', 12)
self._test('function f(){return 0.0 << NaN}', 0)
self._test('function f(){return null << undefined}', 0)
def test_negative(self):
self._test('function f(){return 2 * -2.0 ;}', -4)
self._test('function f(){return 2 - - -2 ;}', 0)

22
youtube_dl/jsinterp.py
View File

@ -283,17 +283,6 @@ _OPERATORS = (
('**', _js_exp),
)
_COMP_OPERATORS = (
('===', _js_id_op(operator.is_)),
('!==', _js_id_op(operator.is_not)),
('==', _js_eq),
('!=', _js_neq),
('<=', _js_comp_op(operator.le)),
('>=', _js_comp_op(operator.ge)),
('<', _js_comp_op(operator.lt)),
('>', _js_comp_op(operator.gt)),
)
_LOG_OPERATORS = (
('|', _js_bit_op(operator.or_)),
('^', _js_bit_op(operator.xor)),
@ -314,6 +303,17 @@ _UNARY_OPERATORS_X = (
_OPERATOR_RE = '|'.join(map(lambda x: re.escape(x[0]), _OPERATORS + _LOG_OPERATORS))
_COMP_OPERATORS = (
('===', _js_id_op(operator.is_)),
('!==', _js_id_op(operator.is_not)),
('==', _js_eq),
('!=', _js_neq),
('<=', _js_comp_op(operator.le)),
('>=', _js_comp_op(operator.ge)),
('<', _js_comp_op(operator.lt)),
('>', _js_comp_op(operator.gt)),
)
_NAME_RE = r'[a-zA-Z_$][\w$]*'
_MATCHING_PARENS = dict(zip(*zip('()', '{}', '[]')))
_QUOTES = '\'"/'