@SuppressWarnings("unchecked")
@Override
public Loop caseBlockWhile(BlockWhile blockWhile) {
// Initialize members
Map<Var, Port> inputs = new HashMap<Var, Port>();
Map<Var, Bus> outputs = new HashMap<Var, Bus>();
Map<Bus, Var> feedbackBusVar = new HashMap<Bus, Var>();
Map<Bus, Var> completeBusVar = new HashMap<Bus, Var>();
// -- Decision
// Construct decision from the block while condition
Block decisionBlock = null;
Component valueComponent = new ExprToComponent().doSwitch(blockWhile.getCondition());
Map<Var, Port> dBlockDataPorts = null;
if (!(valueComponent instanceof Block)) {
dBlockDataPorts = new HashMap<Var, Port>();
Map<Var, Port> valueDataPorts =
(Map<Var, Port>) blockWhile.getCondition().getAttribute("inputs").getObjectValue();
decisionBlock = new Block(Arrays.asList(valueComponent));
// Propagate DataPorts
ComponentUtil.propagateDataPorts(decisionBlock, dBlockDataPorts, valueDataPorts);
// Propagate DataBuses
for (Bus dataBus : valueComponent.getExit(Exit.DONE).getDataBuses()) {
Bus blockDataBus = decisionBlock.getExit(Exit.DONE).makeDataBus();
Port blockDataBuspeer = blockDataBus.getPeer();
ComponentUtil.connectDataDependency(dataBus, blockDataBuspeer, 0);
}
} else {
decisionBlock = (Block) valueComponent;
dBlockDataPorts =
(Map<Var, Port>) blockWhile.getCondition().getAttribute("inputs").getObjectValue();
}
Component decisionComponent = ComponentUtil.decisionFindConditionComponent(decisionBlock);
// Create decision
Decision decision = new Decision(decisionBlock, decisionComponent);
Debug.depGraphTo(decision, "deicions", "/tmp/decision1.dot", 1);
// Propagate decisionBlockInputs to the decision one
Map<Var, Port> dDataPorts = new HashMap<Var, Port>();
ComponentUtil.propagateDataPorts(decision, dDataPorts, dBlockDataPorts);
// -- Loop Body
// Construct Loop Body Block from the block while blocks
Map<Var, Port> blockDataPorts = new HashMap<Var, Port>();
Map<Var, Bus> blockDataBuses = new HashMap<Var, Bus>();
Module body =
(Module)
new BlocksToBlock(blockDataPorts, blockDataBuses, false)
.doSwitch(blockWhile.getBlocks());
// Loop body (While Body) inputs and outputs
Map<Var, Port> lbDataPorts = new HashMap<Var, Port>();
LoopBody loopBody = new WhileBody(decision, body);
Debug.depGraphTo(loopBody, "loopBody", "/tmp/loopBody.dot", 1);
// Propagate decision and body inputs to the loopBody
// -- Propagate Decision data ports
ComponentUtil.propagateDataPorts(loopBody, lbDataPorts, dDataPorts);
// -- Propagate Body Blocks data ports
ComponentUtil.propagateDataPorts(loopBody, lbDataPorts, blockDataPorts);
// -- Complete Exit
for (Var var : blockDataBuses.keySet()) {
Type type = var.getType();
Bus bus = blockDataBuses.get(var);
// -- Make an complete exit data bus
Bus cBus =
loopBody
.getLoopCompleteExit()
.makeDataBus(var.getName() + "_fb", type.getSizeInBits(), type.isInt());
// -- Connect
Port cBusPeer = cBus.getPeer();
ComponentUtil.connectDataDependency(bus, cBusPeer);
// -- Save it to the feedbackBusVar
completeBusVar.put(cBus, var);
}
// -- FeedBack Exit
for (Var var : blockDataBuses.keySet()) {
Type type = var.getType();
// -- If the input does not exist create one because this is a
// feedback
if (!lbDataPorts.containsKey(var)) {
Port lbPort =
loopBody.makeDataPort(var.getName() + "_fb", type.getSizeInBits(), type.isInt());
lbDataPorts.put(var, lbPort);
}
Bus bus = blockDataBuses.get(var);
// -- Make an feedback exit data bus
Bus fbBus =
loopBody
.getFeedbackExit()
.makeDataBus(var.getName() + "_fb", type.getSizeInBits(), type.isInt());
// -- Connect
Port fbBusPeer = fbBus.getPeer();
ComponentUtil.connectDataDependency(bus, fbBusPeer);
// -- Save it to the feedbackBusVar
feedbackBusVar.put(fbBus, var);
}
// -- From input to Complete Exit dependency
for (Bus bus : completeBusVar.keySet()) {
Var var = completeBusVar.get(bus);
Port port = lbDataPorts.get(var);
// -- Connect it
Port busPeer = bus.getPeer();
Bus portpeer = port.getPeer();
ComponentUtil.connectDataDependency(portpeer, busPeer);
}
// Create Loop
Loop loop = new Loop(loopBody);
// -- Loop inputs comes from decision and body
Set<Var> inVars = new HashSet<Var>();
inVars.addAll(dDataPorts.keySet());
inVars.addAll(lbDataPorts.keySet());
for (Var var : inVars) {
Type type = var.getType();
Port dataPort = loop.makeDataPort(var.getName(), type.getSizeInBits(), type.isInt());
inputs.put(var, dataPort);
}
// -- Init Dependencies
Entry initEntry = loop.getBodyInitEntry();
for (Var var : inputs.keySet()) {
if (feedbackBusVar.containsValue(var)) {
Port lPort = inputs.get(var);
Port lbPort = lbDataPorts.get(var);
Bus lPortPeer = lPort.getPeer();
Dependency dep =
(lbPort == lbPort.getOwner().getGoPort())
? new ControlDependency(lPortPeer)
: new DataDependency(lPortPeer);
initEntry.addDependency(lbPort, dep);
}
}
// -- Feedback Dependencies
Entry fbEntry = loop.getBodyFeedbackEntry();
for (Bus bus : feedbackBusVar.keySet()) {
Var var = feedbackBusVar.get(bus);
Exit lfbExit = loop.getBody().getFeedbackExit();
Port lbPort = lbDataPorts.get(var);
// -- Create a feedback register
Reg fbReg = loop.createDataRegister();
fbReg.setIDLogical("fbReg_" + var.getName());
// fbReg.getDataPort().setIDLogical(var.getName());
// fbReg.getResultBus().setIDLogical(var.getName());
// -- Dependencies
Entry entry = fbReg.makeEntry(lfbExit);
entry.addDependency(fbReg.getDataPort(), new DataDependency(bus));
fbEntry.addDependency(lbPort, new DataDependency(fbReg.getResultBus()));
}
// -- Latch Dependencies
Collection<Dependency> goInitDeps = initEntry.getDependencies(loop.getBody().getGoPort());
Bus initDoneBus = goInitDeps.iterator().next().getLogicalBus();
for (Var var : inVars) {
if (!feedbackBusVar.containsValue(var)) {
Port lPort = inputs.get(var);
Bus lPortPeer = lPort.getPeer();
// -- Create a latch
Latch latch = loop.createDataLatch();
latch.setIDLogical("latched_" + var.getName());
// -- Dependencies
Entry latchEntry = latch.makeEntry(initDoneBus.getOwner());
latch.getDataPort().setIDLogical(var.getName());
// -- Control dependency
latchEntry.addDependency(latch.getEnablePort(), new ControlDependency(initDoneBus));
// -- Data dependency in latch
latchEntry.addDependency(latch.getDataPort(), new DataDependency(lPortPeer));
// -- Data dependency out latch
Bus latchResultBus = latch.getResultBus();
latchResultBus.setIDLogical(var.getName() + "_result");
Port lbPort = lbDataPorts.get(var);
fbEntry.addDependency(lbPort, new DataDependency(latchResultBus));
}
}
// -- Done Dependencies
Entry outbufEntry = loop.getExit(Exit.DONE).getPeer().getEntries().get(0);
for (Bus bus : loopBody.getLoopCompleteExit().getDataBuses()) {
Var var = completeBusVar.get(bus);
Type type = var.getType();
Bus dataBus =
loop.getExit(Exit.DONE).makeDataBus(var.getName(), type.getSizeInBits(), type.isInt());
Port dataBusPeer = dataBus.getPeer();
Dependency dep = new DataDependency(bus);
outbufEntry.addDependency(dataBusPeer, dep);
outputs.put(var, dataBus);
}
// -- Set control dependency
Port lbDonePort = loopBody.getLoopCompleteExit().getDoneBus().getPeer();
Bus lDoneBus = loop.getExit(Exit.DONE).getDoneBus();
Dependency dep = new ControlDependency(lDoneBus);
outbufEntry.addDependency(lbDonePort, dep);
// -- IDSourceInfo
Procedure procedure = EcoreHelper.getContainerOfType(blockWhile, Procedure.class);
IDSourceInfo sinfo = new IDSourceInfo(procedure.getName(), blockWhile.getLineNumber());
loop.setIDSourceInfo(sinfo);
Debug.depGraphTo(loop, "loopBody", "/tmp/loop_new.dot", 1);
// -- Set attributes
blockWhile.setAttribute("inputs", inputs);
blockWhile.setAttribute("outputs", outputs);
return loop;
}
@Override
protected void traverse(Block block) {
block.getInBuf().accept(this);
traverse(block.getSequence());
traverse(block.getOutBufs());
}