private static void matchNodeSubgraph(Node node1, Node node2, Map<Node, Node> map) {
if (map.containsKey(node1)) {
assert (node2 == map.get(node1));
return;
}
map.put(node1, node2);
if (secondary_index[4]) {
for (Field f : node1.outfields.keySet()) {
FieldEdge fe1 = node1.outfields.get(f);
assert (fe1.src.getRep() == node1);
FieldEdge fe2 = node2.outfields.get(f);
assert (fe2 != null);
assert (fe2.src.getRep() == node2);
matchNodeSubgraph(fe1.dst.getRep(), fe2.dst.getRep(), map);
}
} else {
for (Field f : node1.graph.fedges.keySet())
for (FieldEdge fe1 : node1.graph.fedges.get(f)) {
if (fe1.src.getRep() != node1) continue;
boolean found = false;
assert (node2.graph.fedges.get(f) != null);
for (FieldEdge fe2 : node2.graph.fedges.get(f)) {
if (fe2.src.getRep() != node2) continue;
if (!fe1.field.equals(fe2.field)) continue;
matchNodeSubgraph(fe1.dst.getRep(), fe2.dst.getRep(), map);
found = true;
break;
}
assert (found);
}
}
}
/* Matches the subgraphs rooted at two nodes and records the
* isomorphism into a map. */
private static void matchSubgraph(Node node1, Node node2, Map<RegionVar, RegionVar> map) {
RegionVar r1 = node1.getRep().getRegion();
RegionVar r2 = node2.getRep().getRegion();
if (map.containsKey(r1)) {
assert (r2 == map.get(r1))
: "at call: "
+ node2.graph.method
+ " to "
+ node1.graph.method
+ "\n"
+ r2
+ "("
+ node2
+ ") vs "
+ map.get(r1)
+ " corresponding to "
+ r1
+ "("
+ node1
+ ")";
return;
}
map.put(r1, r2);
if (secondary_index[3]) {
node1 = node1.getRep();
node2 = node2.getRep();
for (Field f : node1.outfields.keySet()) {
FieldEdge fe1 = node1.outfields.get(f);
assert (fe1.src == node1);
FieldEdge fe2 = node2.outfields.get(f);
assert (fe2 != null);
matchSubgraph(fe1.dst, fe2.dst, map);
}
} else {
for (Field f : node1.graph.fedges.keySet())
for (FieldEdge fe1 : node1.graph.fedges.get(f)) {
if (fe1.src != node1) continue;
boolean found = false;
assert (node2.graph.fedges.get(f) != null);
for (FieldEdge fe2 : node2.graph.fedges.get(f)) {
if (fe2.src != node2) continue;
if (!fe1.field.equals(fe2.field)) continue;
matchSubgraph(fe1.dst, fe2.dst, map);
found = true;
break;
}
assert (found);
}
}
}