internal static Rhino.Context Enter(Rhino.Context cx, ContextFactory factory)
{
object helper = VMBridge.instance.GetThreadContextHelper();
Rhino.Context old = VMBridge.instance.GetContext(helper);
if (old != null)
{
cx = old;
}
else
{
if (cx == null)
{
cx = factory.MakeContext();
if (cx.enterCount != 0)
{
throw new InvalidOperationException("factory.makeContext() returned Context instance already associated with some thread");
}
factory.OnContextCreated(cx);
if (factory.IsSealed() && !cx.IsSealed())
{
cx.Seal(null);
}
}
else
{
if (cx.enterCount != 0)
{
throw new InvalidOperationException("can not use Context instance already associated with some thread");
}
}
VMBridge.instance.SetContext(helper, cx);
}
++cx.enterCount;
return cx;
}