/**
* Determines whether a symbol has an annotation of the given type. This includes annotations
* inherited from superclasses due to @Inherited.
*
* @param annotationType The type of the annotation to look for (e.g, "javax.annotation.Nullable")
*/
public static boolean hasAnnotation(Symbol sym, String annotationType, VisitorState state) {
Symbol annotationSym = state.getSymbolFromString(annotationType);
Symbol inheritedSym = state.getSymtab().inheritedType.tsym;
if ((sym == null) || (annotationSym == null)) {
return false;
}
if ((sym instanceof ClassSymbol) && (annotationSym.attribute(inheritedSym) != null)) {
while (sym != null) {
if (sym.attribute(annotationSym) != null) {
return true;
}
sym = ((ClassSymbol) sym).getSuperclass().tsym;
}
return false;
} else {
return sym.attribute(annotationSym) != null;
}
}
