[news.eclipse.tools.jdt] Re: Getting superclass/superinterfaces from an

[exquisitus <no.spam@xxxxxxxxxxxxxxx>]

exquisitus schrieb:
> Daniel Megert schrieb:
> > exquisitus wrote:
> > > Hi,
> > >
> > > Sorry if the question has been already answered, but I didn't found 
> > > the (entry) point... :-(
> > >
> > > How may I determine the superclass(es) from a given source IType. I'm 
> > > finally interested in deciding, if a IMethod overrides a derived one 
> > > and/or implements an interface method.
> > For a pointer take a look at the methods in 
> > org.eclipse.jdt.internal.corext.util.JavaModelUtil.
> >
> > Dani
> > > Thanks in advance,
> > > Sven
>
> Got it. Just for Thread completion:
>
> IMethod method = ...
> IType type = method.getDeclaringType();
> ITypeHierarchy typeHierarchy = type.newSupertypeHierarchy(null);
> IType superclass = typeHierarchy.getSuperclass(type);
> while(superclass != null) {
>     IMethod[] methods = superclass.getMethods();
>                   for (IMethod superMethod : methods) {
>                      if (equals(method, superMethod)) {
>                         // is derived method
>                      }
>                   }
superclass = typeHierarchy.getSuperclass(superclass); // of curse
> }
>
>    static boolean equals(IMethod m1, IMethod m2) throws 
> JavaModelException {
>       if (m1 == m2) return true;
>       if (m1 == null || m2 == null) return false;
>
>       boolean b = m1.getElementName().equals(m2.getElementName());
>
>       String r1 = m1.getReturnType();
>       String r2 = m2.getReturnType();
>
>       b = b && equals(r1, r2); // null safe equals
>
>       String[] p1 = m1.getParameterTypes();
>       String[] p2 = m2.getParameterTypes();
>
>       b = b && Arrays.deepEquals(p1, p2);
>
>       String[] e1 = m1.getExceptionTypes();
>       String[] e2 = m2.getExceptionTypes();
>
>       b = b && Arrays.deepEquals(e1, e2);
>
>       return b;
>    }
>
>    static boolean equals(String s1, String s2) {
>       if (s1 == s2) return true;
>       if (s1 == null || s2 == null) return false;
>       return s1.equals(s2);
>    }