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App/v8world/IPipelined.cpp

@@ -0,0 +1,80 @@
+/* Copyright 2003-2005 ROBLOX Corporation, All Rights Reserved */
+#include "stdafx.h"
+
+#include "V8World/IPipelined.h"
+#include "V8Kernel/Kernel.h"
+
+namespace RBX {
+
+
+Kernel* IPipelined::getKernel() const				
+{
+	RBXASSERT(this->inKernel());
+	IStage* answer = getStage(IStage::KERNEL_STAGE);
+	return rbx_static_cast<Kernel*>(answer);
+}
+
+void IPipelined::putInKernel(Kernel* kernel)
+{
+	putInStage(kernel);
+}
+
+void IPipelined::removeFromKernel()
+{
+	RBXASSERT(currentStage);
+	RBXASSERT(currentStage->getStageType() == IStage::KERNEL_STAGE);
+	removeFromStage(currentStage);
+}
+
+
+
+IStage* IPipelined::getStage(IStage::StageType stageType) const
+{
+	RBXASSERT(currentStage);
+	IStage* tryStage = currentStage;
+	do {
+		if (tryStage->getStageType() == stageType) {
+			return tryStage;
+		}
+		tryStage = (tryStage->getStageType() > stageType)
+						?	tryStage->getUpstream()
+						:	tryStage->getDownstream();
+	}
+	while (1);
+}
+
+void IPipelined::putInPipeline(IStage* stage)
+{
+	RBXASSERT(stage);
+	RBXASSERT(!currentStage);
+	currentStage = stage;
+}
+
+void IPipelined::removeFromPipeline(IStage* stage)
+{
+	RBXASSERT(stage);
+	RBXASSERT(currentStage);
+	RBXASSERT(currentStage == stage);
+	currentStage = NULL;
+}
+
+
+void IPipelined::putInStage(IStage* stage)
+{
+	RBXASSERT(stage);
+	RBXASSERT(currentStage);
+	RBXASSERT(stage->getUpstream() == currentStage);
+	RBXASSERT(currentStage->getDownstream() == stage);
+	currentStage = stage;
+}
+
+void IPipelined::removeFromStage(IStage* stage)
+{
+	RBXASSERT(currentStage);
+	RBXASSERT(stage);
+	RBXASSERT(stage == currentStage);
+	RBXASSERT(stage->getUpstream());
+	currentStage = currentStage->getUpstream();
+}
+
+} // namespace