// -------------------------------------------------------------------
/// Resolves code dependencies.
public override void ResolveDependencies()
{
// -- Ask our children to resolve their dependencies. --
base.ResolveDependencies();
// -- Don't generate code if all enables are false. --
if (ControlFlow.IsAllEnablesAlwaysFalse(myEnablePorts))
{
Parent.Remove(this);
return;
}
// -- Merge with parent if one of the enables is always true. --
if (ControlFlow.IsAtLeastOneEnableAlwaysTrue(myEnablePorts))
{
(Parent as ExecutionBlockDefinition).Replace(this, myExecutionList);
return;
}
// -- Determine if enable producers where optimized out. --
var enableLen = myEnablePorts.Length;
bool hasProducer = false;
for (int i = 0; i < enableLen; ++i)
{
var enable = myEnablePorts[i];
var producerPort = GraphInfo.GetProducerPort(enable);
if (FindCodeBase(producerPort) != null || producerPort.ParentNode.IsConstructor)
{
hasProducer = true;
break;
}
}
if (!hasProducer)
{
(Parent as ExecutionBlockDefinition).Replace(this, myExecutionList);
return;
}
// -- Reposition code for simple trigger->enable --
CodeBase commonParent = null;
if (AreAllInSameExecutionContext(out commonParent))
{
var parentAsExecBlock = commonParent as ExecutionBlockDefinition;
if (AreAllProducersTriggers())
{
if (parentAsExecBlock != null)
{
Debug.Log("Removing enable for=> " + myEnablePorts[0].FullName);
parentAsExecBlock.Replace(this, myExecutionList);
return;
}
}
else if (parentAsExecBlock != null)
{
if (Parent != parentAsExecBlock)
{
Parent.Remove(this);
parentAsExecBlock.AddExecutable(this);
}
}
}
// -- Determine best enable order for code optimization. --
if (enableLen > 1)
{
for (int i = 0; i < enableLen; ++i)
{
var enable = myEnablePorts[i];
if (enable.IsTheOnlyConsumer && !enable.SegmentProducerPort.IsTriggerPort)
{
if (i != 0)
{
var t = myEnablePorts[0];
myEnablePorts[0] = enable;
myEnablePorts[i] = t;
}
break;
}
}
}
// -- Verify if we can optimize parameter ports. --
myEnableCode[0] = Context.GetCodeFor(GraphInfo.GetProducerPort(myEnablePorts[0]));
if (myEnableCode[0] != null)
{
myEnableCode[0] = OptimizeInputParameter(myEnableCode[0], myParent);
if (myEnableCode[0] != null)
{
myEnableCode[0].Parent = this;
}
}
}
