private static void Wrapper(Action worker, ErrorContainer errors)
{
try
{
worker();
}
catch (Exception e)
{
if (!errors.HasErrors)
{
// Internal error - something was thrown without adding to the error container.
// Add at least one error
errors.InternalError(e);
}
}
}
// Wrapper to ensure consistent invariants between loading a document, exception handling, and returning errors.
private static CanvasDocument Wrapper(Func<CanvasDocument> worker, ErrorContainer errors)
{
CanvasDocument document = null;
try
{
document = worker();
if (errors.HasErrors)
{
return null;
}
return document;
}
catch (Exception e)
{
if (!errors.HasErrors)
{
// Internal error - something was thrown without adding to the error container.
// Add at least one error
errors.InternalError(e);
}
return null;
}
}