private ReachingSet AnalyzeNode(TaggedEdge <CFGBlock, EdgeTag> edge)
{
if (ReachingSetDictionary[edge.Source] == null)
{
ReachingSetDictionary = ReachingSetDictionary.SetItem(edge.Source, new ReachingSet());
}
if (ReachingSetDictionary[edge.Target] == null)
{
ReachingSetDictionary = ReachingSetDictionary.SetItem(edge.Target, new ReachingSet());
}
var node = edge.Target;
// IN:
// U RD_OUT(l')
// (l'~>l)
ReachingSetDictionary = ReachingSetDictionary.SetItem(node,
ReachingSetDictionary[node].AddInVarRange(ReachingSetDictionary[edge.Source].DefinedOutVars, true));
// OUT:
// (RD_IN(l) \ kill(l)) U gen(l)
var Out = ReachingSetDictionary[node];
Out = Out.AddOutVarRange(ReachingSetDictionary[node].DefinedInVars);
XmlTraverser xmlTraverser = new XmlTraverser();
CFGASTNodeVisitor nodeVisitor = new CFGASTNodeVisitor();
xmlTraverser.AddVisitor(nodeVisitor);
if (node.AstEntryNode != null)
{
var nodeToTraverse = Conditional.HasConditionNode(node.AstEntryNode) ? Conditional.GetCondNode(node.AstEntryNode)
: node.AstEntryNode;
xmlTraverser.Traverse(nodeToTraverse);
foreach (var currNode in nodeVisitor.NodesOfInterest)
{
var varNode = AstNodeInfo.GetVarNameXmlNode(currNode);
ValueInfo varInfo = new ValueInfo()
{
Block = node
};
varInfo = VariableInfoComposer.AnalyzeBlock(varInfo);
var gs = new Variable(AstNodeInfo.GetVarNameXmlNode(currNode).Name, VariableScope.Unknown);
gs = gs.AddVarInfo(varInfo);
Out = Out.AddOutVar(varNode.InnerText, gs);
}
}
ReachingSetDictionary = ReachingSetDictionary.SetItem(node, ReachingSetDictionary[node].AddOutVarRange(Out.DefinedOutVars));
return(ReachingSetDictionary[node]);
}
