public void JsSerializedScriptCanBeRun()
{
var script = "(()=>{return 6*7;})()";
string sourceUrl = "[eval code]";
using (var runtimeHandle = Engine.JsCreateRuntime(JavaScriptRuntimeAttributes.None, null))
{
using (var contextHandle = Engine.JsCreateContext(runtimeHandle))
{
Engine.JsSetCurrentContext(contextHandle);
JavaScriptSerializedLoadScriptCallback callback = (JavaScriptSourceContext sourceContext, out IntPtr value, out JavaScriptParseScriptAttributes parseAttributes) =>
{
value = Engine.JsCreateString(script, (ulong)script.Length).DangerousGetHandle();
parseAttributes = JavaScriptParseScriptAttributes.None;
return(true);
};
IntPtr ptrScript = Marshal.StringToHGlobalAnsi(script);
try
{
var scriptHandle = Engine.JsCreateExternalArrayBuffer(ptrScript, (uint)script.Length, null, IntPtr.Zero);
var bufferHandle = Engine.JsSerialize(scriptHandle, JavaScriptParseScriptAttributes.None);
var sourceUrlHandle = Engine.JsCreateString(sourceUrl, (ulong)sourceUrl.Length);
var resultHandle = Engine.JsRunSerialized(bufferHandle, callback, JavaScriptSourceContext.None, sourceUrlHandle);
Assert.True(resultHandle != JavaScriptValueSafeHandle.Invalid);
var handleType = Engine.JsGetValueType(resultHandle);
Assert.True(handleType == JsValueType.Number);
var resultValue = Engine.JsNumberToInt(resultHandle);
Assert.True(resultValue == 42);
sourceUrlHandle.Dispose();
resultHandle.Dispose();
scriptHandle.Dispose();
}
finally
{
Marshal.FreeHGlobal(ptrScript);
}
}
}
}
/// <summary>
/// Returns a function representing the specified, previously-serialized, script.
/// </summary>
/// <param name="serializedScript"></param>
/// <param name="sourceUrl"></param>
/// <returns></returns>
public JsFunction ParseSerializedScript(byte[] serializedScript, Func <string> scriptLoadCallback, string sourceUrl = "[eval code]")
{
var buffer = ValueFactory.CreateArrayBuffer(serializedScript);
var jsSourceUrl = ValueFactory.CreateString(sourceUrl);
var callback = new JavaScriptSerializedLoadScriptCallback((JavaScriptSourceContext sourceContext, out IntPtr value, out JavaScriptParseScriptAttributes parseAttributes) =>
{
var script = scriptLoadCallback();
value = Engine.JsCreateString(script, (ulong)script.Length).DangerousGetHandle();
parseAttributes = JavaScriptParseScriptAttributes.None;
return(true);
});
var fnScript = Engine.JsParseSerialized(buffer.Handle, callback, JavaScriptSourceContext.None, jsSourceUrl.Handle);
return(ValueFactory.CreateValue <JsFunction>(fnScript));
}
