// returns null, if not resolved.
public Field getFieldRefAt(int which) {
InstanceKlass klass = getFieldOrMethodKlassRefAt(which);
if (klass == null) return null;
Symbol name = getNameRefAt(which);
Symbol sig = getSignatureRefAt(which);
return klass.findField(name, sig);
}
/**
* Return a List of SA Fields for all the java fields in this class, including all inherited
* fields. This includes hidden fields. Thus the returned list can contain fields with the same
* name. Return an empty list if there are no fields. Only designed for use in a debugging system.
*/
public List getAllFields() {
// Contains a Field for each field in this class, including immediate
// fields and inherited fields.
List allFields = getImmediateFields();
// transitiveInterfaces contains all interfaces implemented
// by this class and its superclass chain with no duplicates.
ObjArray interfaces = getTransitiveInterfaces();
int n = (int) interfaces.getLength();
for (int i = 0; i < n; i++) {
InstanceKlass intf1 = (InstanceKlass) interfaces.getObjAt(i);
if (Assert.ASSERTS_ENABLED) {
Assert.that(intf1.isInterface(), "just checking type");
}
allFields.addAll(intf1.getImmediateFields());
}
// Get all fields in the superclass, recursively. But, don't
// include fields in interfaces implemented by superclasses;
// we already have all those.
if (!isInterface()) {
InstanceKlass supr;
if ((supr = (InstanceKlass) getSuper()) != null) {
allFields.addAll(supr.getImmediateFields());
}
}
return allFields;
}
/** Find field according to JVM spec 5.4.3.2, returns the klass in which the field is defined. */
public Field findField(Symbol name, Symbol sig) {
// search order according to newest JVM spec (5.4.3.2, p.167).
// 1) search for field in current klass
Field f = findLocalField(name, sig);
if (f != null) return f;
// 2) search for field recursively in direct superinterfaces
f = findInterfaceField(name, sig);
if (f != null) return f;
// 3) apply field lookup recursively if superclass exists
InstanceKlass supr = (InstanceKlass) getSuper();
if (supr != null) return supr.findField(name, sig);
// 4) otherwise field lookup fails
return null;
}
/** Find field in direct superinterfaces. */
public Field findInterfaceField(Symbol name, Symbol sig) {
ObjArray interfaces = getLocalInterfaces();
int n = (int) interfaces.getLength();
for (int i = 0; i < n; i++) {
InstanceKlass intf1 = (InstanceKlass) interfaces.getObjAt(i);
if (Assert.ASSERTS_ENABLED) {
Assert.that(intf1.isInterface(), "just checking type");
}
// search for field in current interface
Field f = intf1.findLocalField(name, sig);
if (f != null) {
if (Assert.ASSERTS_ENABLED) {
Assert.that(f.getAccessFlagsObj().isStatic(), "interface field must be static");
}
return f;
}
// search for field in direct superinterfaces
f = intf1.findInterfaceField(name, sig);
if (f != null) return f;
}
// otherwise field lookup fails
return null;
}
public long getObjectSize() {
return alignObjectSize(InstanceKlass.getHeaderSize() + getVtableLen() * getHeap().getOopSize());
}