@Override
public void see(Implementation implementation, Signature sig, Body body, Declaration tail) {
// initialize graph
currentFlowGraph = new SimpleGraph<Block>();
flowGraphs.put(implementation, currentFlowGraph);
// get blocks by name
blocksByName = new HashMap<String, Block>();
Block b = body.getBlocks();
while (b != null) {
blocksByName.put(b.getName(), b);
currentFlowGraph.node(b);
b = b.getTail();
}
// build graph
body.eval(this);
// check for reachability
seenBlocks = new HashSet<Block>();
b = body.getBlocks();
if (b == null) return;
dfs(b);
while (b != null) {
if (!seenBlocks.contains(b))
Err.warning("" + b.loc() + ": Block " + b.getName() + " is unreachable.");
b = b.getTail();
}
if (tail != null) tail.eval(this);
}
@Override
public void see(AtomId atomId, String id) {
if (currentBlock == null) return;
Block target = blocksByName.get(id);
if (target == null) {
Err.error("" + atomId.loc() + ": Inexistent block " + id + ".");
errors = true;
} else currentFlowGraph.edge(currentBlock, target);
}