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[jsinterp] Small updates for a85a875

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* update signature tests
* clarify NaN handling
This commit is contained in:
dirkf 2023-05-19 13:09:18 +01:00
commit d89c2137ba
3 changed files with 16 additions and 7 deletions
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12
youtube_dl/jsinterp.py
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@ -2,7 +2,6 @@ from __future__ import unicode_literals
import itertools
import json
import math
import operator
import re
@ -52,6 +51,10 @@ def wraps_op(op):
return update_and_rename_wrapper
# NB In principle NaN cannot be checked by membership.
# Here all NaN values are actually this one, so _NaN is _NaN,
# although _NaN != _NaN.
_NaN = float('nan')
@ -126,13 +129,8 @@ def _js_comp_op(op):
def _js_ternary(cndn, if_true=True, if_false=False):
"""Simulate JS's ternary operator (cndn?if_true:if_false)"""
if cndn in (False, None, 0, '', JS_Undefined):
if cndn in (False, None, 0, '', JS_Undefined, _NaN):
return if_false
try:
if math.isnan(cndn): # NB: NaN cannot be checked by membership
return if_false
except TypeError:
pass
return if_true