private DUint16Array createArrayFromObject(mdr.DObject array, int byteoffset = 0, int bytelength = 0)
{
var buffer = array as DArrayBuffer;
if (buffer != null)
{
bytelength = (bytelength > 0) ? bytelength : buffer.ByteLength - byteoffset;
checkOffsetCompatibility(byteoffset, bytelength);
return(new DUint16Array(TargetPrototype, buffer, byteoffset, bytelength, TypeSize));
}
var darray = array as DTypedArray;
if (darray != null)
{
bytelength = (bytelength > 0) ? bytelength : darray.ByteLength / darray.TypeSize * TypeSize;
checkOffsetCompatibility(byteoffset, bytelength);
DUint16Array tarray = new DUint16Array(TargetPrototype, bytelength, TypeSize);
fillArray(tarray, darray);
return(tarray);
}
Trace.Fail("invalid Arguments");
return(null);
}
private void fillArray(DUint16Array dst, mdr.DArrayBase src)
{
for (int i = 0; i < dst.ByteLength / dst.TypeSize; ++i)
{
UInt16 value = src.GetPropertyDescriptor(i).Get(src).AsUInt16();
dst.AddPropertyDescriptor(i).Set(dst, value);
}
}
public JSUint16Array()
: base(new mdr.DObject(), "Uint16Array", TypeSize)
{
JittedCode = (ref mdr.CallFrame callFrame) =>
{
DUint16Array uint16array = new DUint16Array(TargetPrototype, 0, TypeSize);
var argsCount = callFrame.PassedArgsCount;
if (argsCount == 1)
{
switch (callFrame.Arg0.ValueType)
{
case mdr.ValueTypes.Int32:
uint16array = new DUint16Array(TargetPrototype, callFrame.Arg0.AsInt32() * TypeSize, TypeSize);
break;
case mdr.ValueTypes.Object:
uint16array = createArrayFromObject(callFrame.Arg0.AsDObject());
break;
case mdr.ValueTypes.Array:
mdr.DArray array = callFrame.Arg0.AsDArray();
uint16array = new DUint16Array(TargetPrototype, array.Length * TypeSize, TypeSize);
fillArray(uint16array, array);
break;
default:
Trace.Fail("invalid Arguments");
break;
}
}
if (argsCount == 2)
{
int byteoffset = callFrame.Arg1.AsInt32();
uint16array = createArrayFromObject(callFrame.Arg0.AsDObject(), byteoffset);
}
if (argsCount == 3)
{
var byteoffset = callFrame.Arg1.AsInt32();
var length = callFrame.Arg2.AsInt32();
checkOffsetMemBoundary(byteoffset);
uint16array = createArrayFromObject(callFrame.Arg0.AsDObject(), byteoffset, length * TypeSize);
}
if (IsConstrutor)
{
callFrame.This = (uint16array);
}
else
{
callFrame.Return.Set(uint16array);
}
};
TargetPrototype.DefineOwnProperty("subarray", new mdr.DFunction((ref mdr.CallFrame callFrame) =>
{
DUint16Array array = (callFrame.This as DUint16Array);
var argsCount = callFrame.PassedArgsCount;
var begin = (argsCount >= 1) ? callFrame.Arg0.AsInt32() : 0;
var end = array.ByteLength / array.TypeSize;
end = (argsCount >= 2) ? callFrame.Arg1.AsInt32() : end;
begin = begin < 0 ? begin += array.ByteLength / array.TypeSize : begin;
end = end < 0 ? end += array.ByteLength / array.TypeSize : end;
var bytelength = Math.Max(0, (end - begin)) * array.TypeSize;
end = Math.Max(array.ByteLength, bytelength);
var uint16array = new DUint16Array(TargetPrototype, bytelength, array.TypeSize);
int offset = (begin <= 0) ? 0 : begin * array.TypeSize;
for (int i = 0; i < uint16array.ByteLength; ++i)
{
uint16array.Elements_[i] = array.Elements_[i + offset];
}
callFrame.Return.Set(uint16array);
}), mdr.PropertyDescriptor.Attributes.NotEnumerable | mdr.PropertyDescriptor.Attributes.Data);
}