@Override
public boolean visit(final CFGNode node, final Element element) {
final LinkedList<Pair<XMLPattern, SimpleAutomatonID>> matchings =
new LinkedList<Pair<XMLPattern, SimpleAutomatonID>>();
for (XMLPattern pattern : getXMLAutomatonDefinition().getXMLpatterns()) {
final Pair<Boolean, XMLPatternVariablesAssignment> matchResult =
pattern.matchesNode(node, aliasResolver);
if (matchResult.getFirst()) {
final XMLPatternVariablesAssignment assign = matchResult.getSecond();
final boolean isGlobal = isGlobalAssignement(assign);
matchings.add(Pair.make(pattern, new SimpleAutomatonID(assign, isGlobal)));
}
}
if (matchings.size() > 1) checkMatchingConflict(element, matchings);
if (!matchings.isEmpty()) {
final PatternLocation newLocation = createCommonPatternLocation(node, matchings);
getNodeLocationDictionary().put(node, Pair.make(newLocation, newLocation));
if (matchings.getFirst().getFirst().isConstructive())
getAutomataIDs().add(matchings.getFirst().getSecond());
} else if (getNavigator().isCallNode(node)) {
final PatternLocation callLocation = createRuleLessPatternLocation(node);
final PatternLocation returnLocation = createRuleLessPatternLocation(node);
getNodeLocationDictionary().put(node, Pair.make(callLocation, returnLocation));
callLocation.setLocationForCallNotPassedStates(returnLocation);
}
return true;
}
private void checkMatchingConflict(
final Element element, final LinkedList<Pair<XMLPattern, SimpleAutomatonID>> matchings) {
if (!logger.isDebugEnabled()) return;
boolean same = true;
final Set<String> names = new HashSet<String>();
names.add(matchings.getFirst().getFirst().getName());
for (final Pair<XMLPattern, SimpleAutomatonID> match : matchings)
if (names.add(match.getFirst().getName())) {
same = false;
break;
}
if (!same) {
logger.debug("This code:");
logger.debug(element.asXML());
logger.debug("can be matched by more than one " + "distinct rule:");
for (final Pair<XMLPattern, SimpleAutomatonID> match : matchings) {
final XMLPattern pat = match.getFirst();
logger.debug(pat.getName() + ": " + pat.getPatternXMLelement().asXML());
}
}
}
