/// <summary>
/// Returns the exception that caused the runtime of the current context to be in the
/// exception state and resets the exception state for that runtime.
/// </summary>
/// <remarks>
/// <para>
/// If the runtime of the current context is not in an exception state, this API will throw
/// <c>JsErrorInvalidArgument</c>. If the runtime is disabled, this will return an exception
/// indicating that the script was terminated, but it will not clear the exception (the
/// exception will be cleared if the runtime is re-enabled using
/// <c>EnableRuntimeExecution</c>).
/// </para>
/// <para>
/// Requires an active script context.
/// </para>
/// </remarks>
/// <returns>The exception for the runtime of the current context.</returns>
public static JavaScriptValue GetAndClearException()
{
JavaScriptValue reference;
Native.ThrowIfError(Native.JsGetAndClearException(out reference));
return(reference);
}
private static string GetErrorMessage()
{
// Get error message and clear exception
JavaScriptValue exception;
if (Native.JsGetAndClearException(out exception) != JavaScriptErrorCode.NoError)
{
return("failed to get and clear exception");
}
JavaScriptPropertyId messageName;
if (Native.JsGetPropertyIdFromName("message",
out messageName) != JavaScriptErrorCode.NoError)
{
return("failed to get error message id");
}
JavaScriptValue messageValue;
if (Native.JsGetProperty(exception, messageName, out messageValue)
!= JavaScriptErrorCode.NoError)
{
return("failed to get error message");
}
IntPtr message;
UIntPtr length;
if (Native.JsStringToPointer(messageValue, out message, out length) != JavaScriptErrorCode.NoError)
{
return("failed to convert error message");
}
return(Marshal.PtrToStringUni(message));
}
