/**
* Creates a list of detectors applicable to the given cope, and with the given configuration.
*
* @param client the client to report errors to
* @param configuration the configuration to look up which issues are enabled etc from
* @param scope the scope for the analysis, to filter out detectors that require wider analysis
* than is currently being performed
* @param scopeToDetectors an optional map which (if not null) will be filled by this method to
* contain mappings from each scope to the applicable detectors for that scope
* @return a list of new detector instances
*/
@NonNull
final List<? extends Detector> createDetectors(
@NonNull LintClient client,
@NonNull Configuration configuration,
@NonNull EnumSet<Scope> scope,
@Nullable Map<Scope, List<Detector>> scopeToDetectors) {
List<Issue> issues = getIssues();
Set<Class<? extends Detector>> detectorClasses = new HashSet<Class<? extends Detector>>();
Map<Class<? extends Detector>, EnumSet<Scope>> detectorToScope =
new HashMap<Class<? extends Detector>, EnumSet<Scope>>();
for (Issue issue : issues) {
Class<? extends Detector> detectorClass = issue.getDetectorClass();
EnumSet<Scope> issueScope = issue.getScope();
if (!detectorClasses.contains(detectorClass)) {
// Determine if the issue is enabled
if (!configuration.isEnabled(issue)) {
continue;
}
// Determine if the scope matches
if (!issue.isAdequate(scope)) {
continue;
}
detectorClass = client.replaceDetector(detectorClass);
assert detectorClass != null : issue.getId();
detectorClasses.add(detectorClass);
}
if (scopeToDetectors != null) {
EnumSet<Scope> s = detectorToScope.get(detectorClass);
if (s == null) {
detectorToScope.put(detectorClass, issueScope);
} else if (!s.containsAll(issueScope)) {
EnumSet<Scope> union = EnumSet.copyOf(s);
union.addAll(issueScope);
detectorToScope.put(detectorClass, union);
}
}
}
List<Detector> detectors = new ArrayList<Detector>(detectorClasses.size());
for (Class<? extends Detector> clz : detectorClasses) {
try {
Detector detector = clz.newInstance();
detectors.add(detector);
if (scopeToDetectors != null) {
EnumSet<Scope> union = detectorToScope.get(clz);
for (Scope s : union) {
List<Detector> list = scopeToDetectors.get(s);
if (list == null) {
list = new ArrayList<Detector>();
scopeToDetectors.put(s, list);
}
list.add(detector);
}
}
} catch (Throwable t) {
client.log(t, "Can't initialize detector %1$s", clz.getName()); // $NON-NLS-1$
}
}
return detectors;
}
