re PR libgcj/12416 (java.lang.Class.getFields returns duplicate entries.)

	PR libgcj/12416:
	* java/lang/Class.h: Updated.
	* java/lang/natClass.cc (_getFields): Removed.
	(getFields): Likewise.
	(getDeclaredFields): Added `public_only' parameter.
	* java/lang/Class.java (getFields): Now implemented in java; from
	Classpath.
	(getDeclaredFields): Likewise.
	(getDeclaredFields(boolean)): Declare.
	(_getFields): Removed.
	(internalGetFields): New method, from Classpath.

From-SVN: r72818

libjava/ChangeLog

 2003-10-22  Tom Tromey  <tromey@redhat.com>
 
+	PR libgcj/12416:
+	* java/lang/Class.h: Updated.
+	* java/lang/natClass.cc (_getFields): Removed.
+	(getFields): Likewise.
+	(getDeclaredFields): Added `public_only' parameter.
+	* java/lang/Class.java (getFields): Now implemented in java; from
+	Classpath.
+	(getDeclaredFields): Likewise.
+	(getDeclaredFields(boolean)): Declare.
+	(_getFields): Removed.
+	(internalGetFields): New method, from Classpath.
+
 	PR libgcj/12656:
 	* gnu/gcj/runtime/natFirstThread.cc (call_main): Use
 	_Jv_LookupDeclaredMethod, not _Jv_GetMethodLocal.

libjava/java/lang/Class.h

@@ -157,7 +157,8 @@ public:
   java::lang::reflect::Constructor *getDeclaredConstructor (JArray<jclass> *);
   JArray<java::lang::reflect::Constructor *> *getDeclaredConstructors (void);
   java::lang::reflect::Field *getDeclaredField (jstring);
-  JArray<java::lang::reflect::Field *> *getDeclaredFields (void);
+  JArray<java::lang::reflect::Field *> *getDeclaredFields ();
+  JArray<java::lang::reflect::Field *> *getDeclaredFields (jboolean);
   java::lang::reflect::Method *getDeclaredMethod (jstring, JArray<jclass> *);
   JArray<java::lang::reflect::Method *> *getDeclaredMethods (void);
 
@@ -166,7 +167,7 @@ public:
 
   java::lang::reflect::Field *getField (jstring);
 private:
-  jint _getFields (JArray<java::lang::reflect::Field *> *result, jint offset);
+  JArray<java::lang::reflect::Field *> internalGetFields ();
   JArray<java::lang::reflect::Constructor *> *_getConstructors (jboolean);
   java::lang::reflect::Field *getField (jstring, jint);
   jint _getMethods (JArray<java::lang::reflect::Method *> *result,

libjava/java/lang/Class.java

@@ -13,6 +13,8 @@ import java.io.Serializable;
 import java.io.InputStream;
 import java.lang.reflect.*;
 import java.security.*;
+import java.util.Arrays;
+import java.util.HashSet;
 
 /**
  * @author Tom Tromey <tromey@cygnus.com>
@@ -64,7 +66,26 @@ public final class Class implements Serializable
 
   public native Field getDeclaredField (String fieldName)
     throws NoSuchFieldException, SecurityException;
-  public native Field[] getDeclaredFields () throws SecurityException;
+
+  /**
+   * Get all the declared fields in this class, but not those inherited from
+   * superclasses. This returns an array of length 0 if there are no fields,
+   * including for primitive types. This does not return the implicit length
+   * field of arrays. A security check may be performed, with
+   * <code>checkMemberAccess(this, Member.DECLARED)</code> as well as
+   * <code>checkPackageAccess</code> both having to succeed.
+   *
+   * @return all declared fields in this class
+   * @throws SecurityException if the security check fails
+   * @since 1.1
+   */
+  public Field[] getDeclaredFields()
+  {
+    memberAccessCheck(Member.DECLARED);
+    return getDeclaredFields(false);
+  }
+
+  native Field[] getDeclaredFields (boolean publicOnly);
 
   private native Method _getDeclaredMethod (String methodName,
 					    Class[] parameterTypes);
@@ -101,8 +122,39 @@ public final class Class implements Serializable
     return fld;
   }
 
-  private native Field[] _getFields (Field[] result, int offset);
-  public native Field[] getFields () throws SecurityException;
+  /**
+   * Get all the public fields declared in this class or inherited from
+   * superclasses. This returns an array of length 0 if there are no fields,
+   * including for primitive types. This does not return the implicit length
+   * field of arrays. A security check may be performed, with
+   * <code>checkMemberAccess(this, Member.PUBLIC)</code> as well as
+   * <code>checkPackageAccess</code> both having to succeed.
+   *
+   * @return all public fields in this class
+   * @throws SecurityException if the security check fails
+   * @since 1.1
+   */
+  public Field[] getFields()
+  {
+    memberAccessCheck(Member.PUBLIC);
+    return internalGetFields();
+  }
+
+  /**
+   * Like <code>getFields()</code> but without the security checks.
+   */
+  private Field[] internalGetFields()
+  {
+    HashSet set = new HashSet();
+    set.addAll(Arrays.asList(getDeclaredFields(true)));
+    Class[] interfaces = getInterfaces();
+    for (int i = 0; i < interfaces.length; i++)
+      set.addAll(Arrays.asList(interfaces[i].internalGetFields()));
+    Class superClass = getSuperclass();
+    if (superClass != null)
+      set.addAll(Arrays.asList(superClass.internalGetFields()));
+    return (Field[])set.toArray(new Field[set.size()]);
+  }
 
   /**
    * Returns the <code>Package</code> in which this class is defined

libjava/java/lang/natClass.cc

@@ -295,16 +295,32 @@ java::lang::Class::getDeclaredField (jstring name)
 }
 
 JArray<java::lang::reflect::Field *> *
-java::lang::Class::getDeclaredFields (void)
+java::lang::Class::getDeclaredFields (jboolean public_only)
 {
-  memberAccessCheck(java::lang::reflect::Member::DECLARED);
+  int size;
+  if (public_only)
+    {
+      size = 0;
+      for (int i = 0; i < field_count; ++i)
+	{
+	  _Jv_Field *field = &fields[i];
+	  if ((field->flags & java::lang::reflect::Modifier::PUBLIC))
+	    ++size;
+	}
+    }
+  else
+    size = field_count;
+
   JArray<java::lang::reflect::Field *> *result
     = (JArray<java::lang::reflect::Field *> *)
-    JvNewObjectArray (field_count, &java::lang::reflect::Field::class$, NULL);
+    JvNewObjectArray (size, &java::lang::reflect::Field::class$, NULL);
   java::lang::reflect::Field** fptr = elements (result);
   for (int i = 0;  i < field_count;  i++)
     {
       _Jv_Field *field = &fields[i];
+      if (public_only
+	  && ! (field->flags & java::lang::reflect::Modifier::PUBLIC))
+	continue;
       java::lang::reflect::Field* rfield = new java::lang::reflect::Field ();
       rfield->offset = (char*) field - (char*) fields;
       rfield->declaringClass = this;
@@ -461,60 +477,6 @@ java::lang::Class::getDeclaringClass (void)
   return NULL;
 }
 
-jint
-java::lang::Class::_getFields (JArray<java::lang::reflect::Field *> *result,
-			       jint offset)
-{
-  int count = 0;
-  for (int i = 0;  i < field_count;  i++)
-    {
-      _Jv_Field *field = &fields[i];
-      if (! (field->getModifiers() & java::lang::reflect::Modifier::PUBLIC))
-	continue;
-      ++count;
-
-      if (result != NULL)
-	{
-	  java::lang::reflect::Field *rfield
-	    = new java::lang::reflect::Field ();
-	  rfield->offset = (char *) field - (char *) fields;
-	  rfield->declaringClass = this;
-	  rfield->name = _Jv_NewStringUtf8Const (field->name);
-	  (elements (result))[offset++] = rfield;
-	}
-    }
-  jclass superclass = getSuperclass();
-  if (superclass != NULL)
-    {
-      int s_count = superclass->_getFields (result, offset);
-      count += s_count;
-      offset += s_count;
-    }
-  for (int i = 0; i < interface_count; ++i)
-    {
-      int f_count = interfaces[i]->_getFields (result, offset);
-      count += f_count;
-      offset += f_count;
-    }
-  return count;
-}
-
-JArray<java::lang::reflect::Field *> *
-java::lang::Class::getFields (void)
-{
-  memberAccessCheck(java::lang::reflect::Member::PUBLIC);
-
-  int count = _getFields (NULL, 0);
-
-  JArray<java::lang::reflect::Field *> *result
-    = ((JArray<java::lang::reflect::Field *> *)
-       JvNewObjectArray (count, &java::lang::reflect::Field::class$, NULL));
-
-  _getFields (result, 0);
-
-  return result;
-}
-
 JArray<jclass> *
 java::lang::Class::getInterfaces (void)
 {