public static boolean assertsFirstParameterIsNonnull(XMethod m) {
return (m.getName().equalsIgnoreCase("checkNonNull")
|| m.getName().equalsIgnoreCase("checkNotNull")
// JDK 7 java.util.Objects.requireNonNull(Object)
|| m.getName().equals("requireNonNull")
// org.eclipse.core.runtime.Assert(Object)
|| m.getName().equalsIgnoreCase("isNotNull")
|| m.getName().equalsIgnoreCase("assertNotNull"))
&& m.getSignature().startsWith("(Ljava/lang/Object;");
}
@CheckForNull
@Override
public NullnessAnnotation getResolvedAnnotation(final Object o, boolean getMinimal) {
Profiler profiler = Global.getAnalysisCache().getProfiler();
profiler.start(this.getClass());
try {
if (o instanceof XMethodParameter) {
XMethodParameter mp = (XMethodParameter) o;
XMethod m = mp.getMethod();
// TODO: Handle argument to equals specially: generate special
// bug code for it
int parameterNumber = mp.getParameterNumber();
if (parameterNumber == 0) {
if (m.getName().equals("equals")
&& m.getSignature().equals("(Ljava/lang/Object;)Z")
&& !m.isStatic()) return NullnessAnnotation.CHECK_FOR_NULL;
else if (m.getName().equals("main")
&& m.getSignature().equals("([Ljava/lang/String;)V")
&& m.isStatic()
&& m.isPublic()) return NullnessAnnotation.NONNULL;
else if (assertsFirstParameterIsNonnull(m)) return NullnessAnnotation.NONNULL;
else if (m.getName().equals("compareTo")
&& m.getSignature().endsWith(";)Z")
&& !m.isStatic()) return NullnessAnnotation.NONNULL;
}
} else if (o instanceof XMethod) {
XMethod m = (XMethod) o;
String name = m.getName();
String signature = m.getSignature();
if (!m.isStatic()
&& (name.equals("clone") && signature.equals("()Ljava/lang/Object;")
|| name.equals("toString") && signature.equals("()Ljava/lang/String;")
|| m.isPrivate()
&& name.equals("readResolve")
&& signature.equals("()Ljava/lang/Object;"))) {
NullnessAnnotation result = super.getDirectAnnotation(m);
if (result != null) return result;
return NullnessAnnotation.NONNULL;
}
} else if (o instanceof XField) {
XField f = (XField) o;
if (f.getName().startsWith("this$")) return NullnessAnnotation.NONNULL;
}
NullnessAnnotation result = super.getResolvedAnnotation(o, getMinimal);
return result;
} finally {
profiler.end(this.getClass());
}
}
public boolean parameterMustBeNonNull(XMethod m, int param) {
if (param == 0) {
if (m.getName().equals("equals")
&& m.getSignature().equals("(Ljava/lang/Object;)Z")
&& !m.isStatic()) return false;
else if (m.getName().equals("main")
&& m.getSignature().equals("([Ljava/lang/String;)V")
&& m.isStatic()
&& m.isPublic()) return true;
else if (assertsFirstParameterIsNonnull(m)) return true;
else if (m.getName().equals("compareTo") && m.getSignature().endsWith(";)Z") && !m.isStatic())
return true;
}
if (!anyAnnotations(NullnessAnnotation.NONNULL)) return false;
XMethodParameter xmp = new XMethodParameter(m, param);
NullnessAnnotation resolvedAnnotation = getResolvedAnnotation(xmp, true);
return resolvedAnnotation == NullnessAnnotation.NONNULL;
}
/**
* Constructor.
*
* @param method an XMethod specifying a specific method in a specific class
* @throws ClassNotFoundException
*/
public JavaClassAndMethod(XMethod method) throws ClassNotFoundException {
this.javaClass = Repository.lookupClass(method.getClassName());
for (Method m : javaClass.getMethods())
if (m.getName().equals(method.getName())
&& m.getSignature().equals(method.getSignature())
&& m.isStatic() == method.isStatic()) {
this.method = m;
return;
}
throw new IllegalArgumentException("Can't find " + method);
}