SickGear/lib/js2py/constructors/jsint32array.py

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# this is based on jsarray.py
from ..base import *
try:
import numpy
except:
pass
@Js
def Int32Array():
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.int32))
temp.put('length', a)
return temp
elif isinstance(a, PyJsString): # object (string)
temp = Js(numpy.array(list(a.value), dtype=numpy.int32))
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.int32))
temp.put('length', Js(len(array)))
return temp
elif isinstance(a,PyObjectWrapper): # object (ArrayBuffer, etc)
if len(a.obj) % 4 != 0:
raise MakeError('RangeError', 'Byte length of Int32Array should be a multiple of 4')
if len(arguments) > 1:
offset = int(arguments[1].value)
if offset % 4 != 0:
raise MakeError('RangeError', 'Start offset of Int32Array should be a multiple of 4')
else:
offset = 0
if len(arguments) > 2:
length = int(arguments[2].value)
else:
length = int((len(a.obj)-offset)/4)
array = numpy.frombuffer(a.obj, dtype=numpy.int32, 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.int32))
temp.put('length', Js(0))
return temp
Int32Array.create = Int32Array
Int32Array.own['length']['value'] = Js(3)
Int32Array.define_own_property('prototype', {'value': Int32ArrayPrototype,
'enumerable': False,
'writable': False,
'configurable': False})
Int32ArrayPrototype.define_own_property('constructor', {'value': Int32Array,
'enumerable': False,
'writable': True,
'configurable': True})
Int32ArrayPrototype.define_own_property('BYTES_PER_ELEMENT', {'value': Js(4),
'enumerable': False,
'writable': False,
'configurable': False})