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bazarr/libs/js2py/constructors/jsuint16array.py

88 lines
2.7 KiB

# this is based on jsarray.py
from ..base import *
try:
import numpy
except:
pass
@Js
def Uint16Array():
TypedArray = (PyJsInt8Array, PyJsUint8Array, PyJsUint8ClampedArray,
PyJsInt16Array, PyJsUint16Array, PyJsInt32Array,
PyJsUint32Array, PyJsFloat32Array, PyJsFloat64Array)
a = arguments[0]
if isinstance(a, PyJsNumber): # length
length = a.to_uint32()
if length != a.value:
raise MakeError('RangeError', 'Invalid array length')
temp = Js(numpy.full(length, 0, dtype=numpy.uint16))
temp.put('length', a)
return temp
elif isinstance(a, PyJsString): # object (string)
temp = Js(numpy.array(list(a.value), dtype=numpy.uint16))
temp.put('length', Js(len(list(a.value))))
return temp
elif isinstance(a, PyJsArray) or isinstance(a, TypedArray) or isinstance(
a, PyJsArrayBuffer): # object (Array, TypedArray)
array = a.to_list()
array = [(int(item.value) if item.value != None else 0)
for item in array]
temp = Js(numpy.array(array, dtype=numpy.uint16))
temp.put('length', Js(len(array)))
return temp
elif isinstance(a, PyObjectWrapper): # object (ArrayBuffer, etc)
if len(a.obj) % 2 != 0:
raise MakeError(
'RangeError',
'Byte length of Uint16Array should be a multiple of 2')
if len(arguments) > 1:
offset = int(arguments[1].value)
if offset % 2 != 0:
raise MakeError(
'RangeError',
'Start offset of Uint16Array should be a multiple of 2')
else:
offset = 0
if len(arguments) > 2:
length = int(arguments[2].value)
else:
length = int((len(a.obj) - offset) / 2)
array = numpy.frombuffer(
a.obj, dtype=numpy.uint16, count=length, offset=offset)
temp = Js(array)
temp.put('length', Js(length))
temp.buff = array
return temp
temp = Js(numpy.full(0, 0, dtype=numpy.uint16))
temp.put('length', Js(0))
return temp
Uint16Array.create = Uint16Array
Uint16Array.own['length']['value'] = Js(3)
Uint16Array.define_own_property(
'prototype', {
'value': Uint16ArrayPrototype,
'enumerable': False,
'writable': False,
'configurable': False
})
Uint16ArrayPrototype.define_own_property(
'constructor', {
'value': Uint16Array,
'enumerable': False,
'writable': True,
'configurable': True
})
Uint16ArrayPrototype.define_own_property('BYTES_PER_ELEMENT', {
'value': Js(2),
'enumerable': False,
'writable': False,
'configurable': False
})