public void visitStatementList(StatementList sl)
{
if (sl.Count() > 0)
{
// use this to determine if we need to link the node succeeding
// this statement list to be linked to it
bool link = true;
Node linkNode;
// the basic block representing the current point in the statement list
CFGBasicBlock slbb = new CFGBasicBlock();
linkNode = slbb;
// add this basic block as the child to the current node
// and then set it as the current node
this.currentNode.add(slbb);
this.currentNode = slbb;
for (int i = 0; i < sl.Count(); i++)
{
// if this statement list has been broken
// create a new basic block and link it
if (this.currentNode != slbb)
{
// do not link this block to the successer of the statement list
link = false;
// if there are more statements to come
CFGBasicBlock bb = new CFGBasicBlock();
// we've just exited out of some kind of branch, make this new block a child of it
this.currentNode.add(bb);
// now make this new block a child of the original statement list
slbb.add(bb);
// now the new block becomes the representative statement list
slbb = bb;
this.currentNode = bb;
// why does this work?????
clearLinkNodes();
}
// handle the next statement
Node nextStatement = sl.get(i);
if (nextStatement.GetType() == typeof(While))
{
// a while statement needs a basic block of its own
CFGBasicBlock bb = new CFGBasicBlock();
this.currentNode.add(bb);
slbb = bb;
this.currentNode = slbb;
}
sl.get(i).accept(this);
}
if (link == true)
{
linkNodes.Add(linkNode);
}
}
}