/**
* Find a matching method in a type.
*
* @param type JDT method
* @param jMethod TypeOracle method object to find
* @return method declaration or null if not found
*/
private static AbstractMethodDeclaration findMethod(
TypeDeclaration type, JAbstractMethod jMethod) {
List<AbstractMethodDeclaration> candidates = findNamedMethods(type, jMethod.getName());
if (candidates.size() == 0) {
return null;
}
if (candidates.size() == 1) {
return candidates.get(0);
}
nextCandidate:
for (AbstractMethodDeclaration candidate : candidates) {
int n = candidate.arguments == null ? 0 : candidate.arguments.length;
JParameter[] params = jMethod.getParameters();
if (n != params.length) {
continue;
}
for (int i = 0; i < n; ++i) {
if (!typeMatches(candidate.arguments[i].type, params[i].getType())) {
continue nextCandidate;
}
}
return candidate;
}
return null;
}
/**
* Return the real argument names for a given method from the source.
*
* @param method method to lookup parameter names for
* @return array of argument names or null if no source is available
*/
public synchronized String[] getArguments(JAbstractMethod method) {
JClassType type = method.getEnclosingType();
JClassType topType = getTopmostType(type);
CompilationUnitDeclaration cud = getCudForTopLevelType(topType);
if (cud == null) {
return null;
}
TypeDeclaration jdtType = findType(cud, type.getQualifiedBinaryName());
if (jdtType == null) {
// TODO(jat): any thing else to do here?
return null;
}
AbstractMethodDeclaration jdtMethod = findMethod(jdtType, method);
if (jdtMethod == null) {
// TODO(jat): any thing else to do here?
return null;
}
int n = jdtMethod.arguments.length;
String[] argNames = new String[n];
for (int i = 0; i < n; ++i) {
argNames[i] = String.valueOf(jdtMethod.arguments[i].name);
}
return argNames;
}