public JsValueHolder(IContextSwitchService contextSwitch, JavaScriptValue value)
{
this.contextSwitch = contextSwitch;
contextSwitch.With(() =>
{
value.AddRef();
});
}
internal void SetJSSource(JavaScriptValue value, IContextSwitchService context)
{
if (JSSource.IsValid)
{
throw new InvalidOperationException("cannot set jsvalue twice");
}
if (!value.IsValid)
{
throw new ArgumentException("not a valid javascriptvalue", nameof(value));
}
value.AddRef();
JSSource = value;
releaseJSValue = new Action(() => { context.With(() => value.Release()); });
}
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");
}
}
/// <summary>
/// Create DataView in javascript
/// this method requires a sourceArrayBuffer which make sure the arraybuffer is initialized before transfer to javascript
/// </summary>
/// <param name="sourceArrayBuffer">ArrayBuffer object</param>
/// <param name="source"></param>
/// <returns></returns>
public static JavaScriptValue CreateDataView(this IJSValueService valueService, JavaScriptValue sourceArrayBuffer, JSDataView source)
{
IContextSwitchService switchService = valueService.CurrentNode.GetService <IRuntimeService>().InternalContextSwitchService;
if (source.JSSource.IsValid)
{
return(source.JSSource);
}
switch (source.BufferSource)
{
case SharedBufferSourceEnum.CreateByDotnet:
return(switchService.With <JavaScriptValue>(
() =>
{
var result = JavaScriptValue.CreateDataView(sourceArrayBuffer, source.Position, (uint)source.Size);
source.SetJSSource(result, switchService);
source.InitBeforeConvert(source.Buffer);
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.CreateDataView(sourceArrayBuffer, source.Position, (uint)source.Size);
source.SetJSSource(result, switchService);
JavaScriptValue.GetDataViewStorage(result, out IntPtr data, out uint bufferLength);
source.InitWindow(data, false);
source.InitBeforeConvert(source.Buffer);
return result;
}
));
case SharedBufferSourceEnum.CreateByExternal:
throw new ArgumentException("DataView does not support create from external");
default:
throw new ArgumentOutOfRangeException("Invalid BufferSource property in JSDataView object");
}
}
public static JavaScriptValue CreateArrayBuffer(this IJSValueService valueService, JSArrayBuffer source)
{
IContextSwitchService switchService = valueService.CurrentNode.GetService <IRuntimeService>().InternalContextSwitchService;
return(switchService.With <JavaScriptValue>(() =>
{
if (source.JSSource.IsValid)
{
return source.JSSource;
}
switch (source.BufferSource)
{
case SharedBufferSourceEnum.CreateByJavascript:
throw new InvalidOperationException("invalid source array buffer"); //create by javascript should already have JavaScriptValue assigned
case SharedBufferSourceEnum.CreateInJavascript:
{
JavaScriptValue result = JavaScriptValue.CreateArrayBuffer((uint)source.Size);
source.SetJSSource(result, switchService); //hold the varient
var data = JavaScriptValue.GetArrayBufferStorage(result, out uint bufferSize);
source.InitWindow(data, false);
source.InitBeforeConvert(source.Buffer);
return result;
}
case SharedBufferSourceEnum.CreateByDotnet:
case SharedBufferSourceEnum.CreateByExternal:
{
var result = JavaScriptValue.CreateExternalArrayBuffer(source.Buffer.Handle, (uint)source.Buffer.ByteLength, null, IntPtr.Zero); //do not handle GC callback, user should control the varient life cycle
source.SetJSSource(result, switchService); //hold the varient
return result;
}
default:
throw new ArgumentOutOfRangeException("Invalid BufferSource property in JSArryBuffer object");
}
}
));
}
internal static JSArrayBuffer CreateFromJS(IntPtr handle, uint size, JavaScriptValue value, IContextSwitchService context)
{
var result = new JSArrayBuffer(SharedBufferSourceEnum.CreateByJavascript, (ulong)size);
result.SetJSSource(value, context);
result.InitWindow(handle, false); //memory owned by js, do not release when object is disposed
return(result);
}
internal static JSDataView CreateFromJS(JavaScriptValue value, IntPtr handle, uint size, IContextSwitchService context)
{
JSDataView result = new JSDataView(SharedBufferSourceEnum.CreateByJavascript, null, 0, size);
result.SetJSSource(value, context);
result.InitWindow(handle, false);
return(result);
}
internal static JSTypedArray CreateFromJS(JavaScriptTypedArrayType type, IntPtr data, uint unitCount, JavaScriptValue source, IContextSwitchService context)
{
JSTypedArray result = new JSTypedArray(type, 0, unitCount);
result.SetJSSource(source, context);
result.InitWindow(data, false);
return(result);
}
public RuntimeService(JavaScriptRuntime runtime)
{
this.runtime = runtime;
context = runtime.CreateContext();
InternalContextSwitchService = new RuntimeInternalContextSwitcher(context);
}
