public static JavaScriptValue CreateTypedArray(this IJSValueService valueService, JSTypedArray source, JavaScriptValue?arrayBufferSource)
{
IContextSwitchService switchService = valueService.CurrentNode.GetService <IRuntimeService>().InternalContextSwitchService;
if (source.JSSource.IsValid)
{
return(source.JSSource);
}
switch (source.BufferSource)
{
case SharedBufferSourceEnum.CreateByDotnet:
return(switchService.With <JavaScriptValue>(
() =>
{
if (arrayBufferSource == null)
{
throw new ArgumentNullException(nameof(arrayBufferSource));
}
var result = JavaScriptValue.CreateTypedArray(source.ArrayType, arrayBufferSource.Value, source.Position, source.UnitCount);
source.SetJSSource(result, switchService);
return result;
}
));
case SharedBufferSourceEnum.CreateByJavascript:
throw new InvalidOperationException("invalid source typed array"); //create by javascript should already have JavaScriptValue assigned
case SharedBufferSourceEnum.CreateInJavascript:
return(switchService.With <JavaScriptValue>(
() =>
{
var result = JavaScriptValue.CreateTypedArray(source.ArrayType, JavaScriptValue.Invalid, source.Position, source.UnitCount);
source.SetJSSource(result, switchService); //hold the objec
//get the internal storage
JavaScriptValue.GetTypedArrayStorage(result, out IntPtr data, out uint bufferLength, out JavaScriptTypedArrayType type, out int elementSize);
source.InitWindow(data, false);
source.InitBeforeConvert(source.Buffer);
return result;
}
));
case SharedBufferSourceEnum.CreateByExternal:
throw new ArgumentException("TypedArray does not support create from external");
default:
throw new ArgumentOutOfRangeException("Invalid BufferSource property in JSTypedArray object");
}
}
