/**
* Find a method in the enclosing class's superclass that this method overrides.
*
* @return A superclass method that is overridden by {@code method}
*/
public static MethodSymbol findSuperMethod(MethodSymbol method, Types types) {
TypeSymbol superClass = method.enclClass().getSuperclass().tsym;
if (superClass == null) {
return null;
}
for (Symbol sym : superClass.members().getSymbols()) {
if (sym.name.contentEquals(method.name) && method.overrides(sym, superClass, types, true)) {
return (MethodSymbol) sym;
}
}
return null;
}
/** @return all values of the given enum type, in declaration order. */
public static LinkedHashSet<String> enumValues(TypeSymbol enumType) {
if (enumType.getKind() != ElementKind.ENUM) {
throw new IllegalStateException();
}
Scope scope = enumType.members();
Deque<String> values = new ArrayDeque<>();
for (Symbol sym : scope.getSymbols()) {
if (sym instanceof VarSymbol) {
VarSymbol var = (VarSymbol) sym;
if ((var.flags() & Flags.ENUM) != 0) {
/**
* Javac gives us the members backwards, apparently. It's worth making an effort to
* preserve declaration order because it's useful for diagnostics (e.g. in {@link
* MissingCasesInEnumSwitch}).
*/
values.push(sym.name.toString());
}
}
}
return new LinkedHashSet<>(values);
}