public static @CheckForNull LocalVariableAnnotation findUniqueBestMatchingParameter(
ClassContext classContext, Method method, String name, String signature) {
LocalVariableAnnotation match = null;
int localsThatAreParameters = PreorderVisitor.getNumberArguments(method.getSignature());
int startIndex = 0;
if (!method.isStatic()) startIndex = 1;
SignatureParser parser = new SignatureParser(method.getSignature());
Iterator<String> signatureIterator = parser.parameterSignatureIterator();
int lowestCost = Integer.MAX_VALUE;
for (int i = startIndex; i < localsThatAreParameters + startIndex; i++) {
String sig = signatureIterator.next();
if (signature.equals(sig)) {
LocalVariableAnnotation potentialMatch =
LocalVariableAnnotation.getLocalVariableAnnotation(method, i, 0, 0);
if (!potentialMatch.isNamed()) continue;
int distance = EditDistance.editDistance(name, potentialMatch.getName());
if (distance < lowestCost) {
match = potentialMatch;
match.setDescription(DID_YOU_MEAN_ROLE);
lowestCost = distance;
} else if (distance == lowestCost) {
// not unique best match
match = null;
}
// signatures match
}
}
if (lowestCost < 5) return match;
return null;
}
public static @CheckForNull LocalVariableAnnotation findMatchingIgnoredParameter(
ClassContext classContext, Method method, String name, String signature) {
try {
Dataflow<BitSet, LiveLocalStoreAnalysis> llsaDataflow =
classContext.getLiveLocalStoreDataflow(method);
CFG cfg;
cfg = classContext.getCFG(method);
LocalVariableAnnotation match = null;
int lowestCost = Integer.MAX_VALUE;
BitSet liveStoreSetAtEntry = llsaDataflow.getAnalysis().getResultFact(cfg.getEntry());
int localsThatAreParameters = PreorderVisitor.getNumberArguments(method.getSignature());
int startIndex = 0;
if (!method.isStatic()) startIndex = 1;
SignatureParser parser = new SignatureParser(method.getSignature());
Iterator<String> signatureIterator = parser.parameterSignatureIterator();
for (int i = startIndex; i < localsThatAreParameters + startIndex; i++) {
String sig = signatureIterator.next();
if (!liveStoreSetAtEntry.get(i) && signature.equals(sig)) {
// parameter isn't live and signatures match
LocalVariableAnnotation potentialMatch =
LocalVariableAnnotation.getLocalVariableAnnotation(method, i, 0, 0);
potentialMatch.setDescription(DID_YOU_MEAN_ROLE);
if (!potentialMatch.isNamed()) return potentialMatch;
int distance = EditDistance.editDistance(name, potentialMatch.getName());
if (distance < lowestCost) {
match = potentialMatch;
match.setDescription(DID_YOU_MEAN_ROLE);
lowestCost = distance;
} else if (distance == lowestCost) {
// not unique best match
match = null;
}
}
}
return match;
} catch (DataflowAnalysisException e) {
AnalysisContext.logError("", e);
} catch (CFGBuilderException e) {
AnalysisContext.logError("", e);
}
return null;
}