protected Expression deepCopy(IdentityHashTable identityhashtable) {
Expression expression = deepCopy(result, identityhashtable);
if (expression == null && result != null) {
return null;
}
identityhashtable = ((IdentityHashTable) (identityhashtable.get(block)));
if (identityhashtable == null) {
identityhashtable = block;
} else {
identityhashtable = (BlockExp) identityhashtable;
}
identityhashtable = new ExitExp(expression, identityhashtable);
identityhashtable.flags = getFlags();
return identityhashtable;
}
