private void CloseOuters(OuterValue[] openOuters, uint newTop)
{
for (int i = openOuters.Length; --i >= newTop;)
if (openOuters[i] != null)
{
openOuters[i].Close();
openOuters[i] = null;
}
}
internal LayeClosure BuildClosure(FunctionPrototype proto, OuterValue[] openOuters, LayeTypeDef definedType, LayeObject[] defaults)
{
var top = stack.Top;
var closure = new LayeClosure(top.closure.kit, proto, definedType, defaults);
var protoOuters = proto.outers;
for (var i = 0; i < protoOuters.Length; i++)
if (protoOuters[i].type == OuterValueType.LOCAL)
closure.outers[i] = FindOuterValue(top.Locals, protoOuters[i].location, openOuters);
else closure.outers[i] = top.closure.outers[protoOuters[i].location];
return closure;
}
private void EndCall(StackFrame frame, OuterValue[] openOuters)
{
// If we return early, make sure all things are gone plz
// (this is me being lazy, we don't pop them automatically in the compiler)
while (frame.activeExceptionHandlers > 0)
{
frame.activeExceptionHandlers--;
exceptionHandlers.Pop();
}
if (openOuters != null)
CloseOuters(openOuters, 0);
}
private static OuterValue FindOuterValue(LayeObject[] locals, uint idx, OuterValue[] openOuters)
{
int n = openOuters.Length;
for (int i = 0; i < n; i++)
if (openOuters[i] != null && openOuters[i].Index == idx)
return openOuters[i];
for (int i = 0; i < n; i++)
if (openOuters[i] == null)
return openOuters[i] = new OuterValue(locals, idx);
throw new ArgumentException("no space for new outer value.");
}