/** Random reflection-related utilities */
public final class Reflection {
-
- private static Object rebuild(Object o, Class c) {
+
+ public static Object rebuild(Object o, Class c) {
//System.out.println("rebuild " + o + " (a " + (o==null?null:o.getClass().getName()) + ") " + c);
if (o==null || c.isAssignableFrom(o.getClass())) return o;
if ((c == Character.class || c == Character.TYPE) && o instanceof String && ((String)o).length()==1) return new Character(((String)o).charAt(0));
Object[] ret = (Object[])Array.newInstance(c.getComponentType(), 1);
ret[0] = o;
return ret;
+ } else if (c==int.class && o instanceof Number) { return o;
} else {
throw new Error("unable to cast " + o + " from " + o.getClass().getName() + " to " + c.getName());
}
return (Object[])Array.newInstance(c, i);
}
+ public static String show(Object o) {
+ if (o==null) return "null";
+ if (o instanceof Show) {
+ StringBuffer ret = new StringBuffer();
+ for(Field f : o.getClass().getFields()) {
+ ret.append("\n" + f.getName() + " = ");
+ try {
+ ret.append(show(f.get(o)));
+ } catch (Exception e) {
+ ret.append("**"+e+"**");
+ throw new RuntimeException(e);
+ }
+ }
+ return o.getClass().getName() + " {" + StringUtil.indent(ret.toString(), 4) + "\n}";
+ }
+ if (! (o instanceof Object[])) return o.toString() + " : " + o.getClass().getName();
+ Object[] arr = (Object[])o;
+ StringBuffer ret = new StringBuffer();
+ ret.append(o.getClass().getComponentType().getName());
+ ret.append("["+arr.length+"]:");
+ for(int i=0; i<arr.length; i++)
+ ret.append(StringUtil.indent("\n"+show(arr[i]), 4));
+ return ret.toString();
+ }
+
public static Object lub(Object argo) {
if (argo instanceof Object[]) return lub((Object[])argo);
return argo;
return o+"";
}
+ public static boolean isConcrete(Class c) {
+ if ((c.getModifiers() & Modifier.ABSTRACT) != 0) return false;
+ if ((c.getModifiers() & Modifier.INTERFACE) != 0) return false;
+ return true;
+ }
+ public static boolean isStatic(Field f) {
+ if ((f.getModifiers() & Modifier.STATIC) != 0) return true;
+ return false;
+ }
+
+ public static Field getField(Class c, String s) {
+ try {
+ for(Field f : c.getDeclaredFields())
+ if (f.getName().equals(s))
+ return f;
+ } catch (Exception e) { }
+ if (c.getSuperclass()==null || c.getSuperclass()==c) return null;
+ return getField(c.getSuperclass(), s);
+ }
+ public static Field getField(Class c, int i) {
+ try {
+ for(Field f : c.getDeclaredFields()) {
+ if (isStatic(f)) continue;
+ return f;
+ }
+ if (c.getSuperclass()==null || c.getSuperclass()==c) return null;
+ return getField(c.getSuperclass(), i);
+ } catch (Exception e) { }
+ return null;
+ }
+
+ public static interface Show { }
}