Adding upstream version 6.1.22-dfsg.upstream/6.1.22-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 267 insertions, 0 deletions

diff --git a/src/libs/xpcom18a4/xpcom/ds/nsCOMArray.h b/src/libs/xpcom18a4/xpcom/ds/nsCOMArray.h
new file mode 100644
index 00000000..cbb728c0
--- /dev/null
+++ b/src/libs/xpcom18a4/xpcom/ds/nsCOMArray.h
@@ -0,0 +1,267 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is a COM aware array class.
+ *
+ * The Initial Developer of the Original Code
+ * Netscape Communications Corp.
+ * Portions created by the Initial Developer are Copyright (C) 2002
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Alec Flett <alecf@netscape.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef nsCOMArray_h__
+#define nsCOMArray_h__
+
+#include "nsVoidArray.h"
+#include "nsISupports.h"
+
+// See below for the definition of nsCOMArray<T>
+
+// a class that's nsISupports-specific, so that we can contain the
+// work of this class in the XPCOM dll
+class NS_COM nsCOMArray_base
+{
+    friend class nsArray;
+protected:
+    nsCOMArray_base() {}
+    nsCOMArray_base(PRInt32 aCount) : mArray(aCount) {}
+    nsCOMArray_base(const nsCOMArray_base& other);
+    ~nsCOMArray_base();
+
+    PRInt32 IndexOf(nsISupports* aObject) const {
+        return mArray.IndexOf(aObject);
+    }
+
+    PRInt32 IndexOfObject(nsISupports* aObject) const;
+
+    PRBool EnumerateForwards(nsVoidArrayEnumFunc aFunc, void* aData) {
+        return mArray.EnumerateForwards(aFunc, aData);
+    }
+    
+    PRBool EnumerateBackwards(nsVoidArrayEnumFunc aFunc, void* aData) {
+        return mArray.EnumerateBackwards(aFunc, aData);
+    }
+    
+    void Sort(nsVoidArrayComparatorFunc aFunc, void* aData) {
+        mArray.Sort(aFunc, aData);
+    }
+    
+    // any method which is not a direct forward to mArray should
+    // avoid inline bodies, so that the compiler doesn't inline them
+    // all over the place
+    void Clear();
+    PRBool InsertObjectAt(nsISupports* aObject, PRInt32 aIndex);
+    PRBool InsertObjectsAt(const nsCOMArray_base& aObjects, PRInt32 aIndex);
+    PRBool ReplaceObjectAt(nsISupports* aObject, PRInt32 aIndex);
+    PRBool AppendObject(nsISupports *aObject) {
+        return InsertObjectAt(aObject, Count());
+    }
+    PRBool AppendObjects(const nsCOMArray_base& aObjects) {
+        return InsertObjectsAt(aObjects, Count());
+    }
+    PRBool RemoveObject(nsISupports *aObject);
+    PRBool RemoveObjectAt(PRInt32 aIndex);
+
+public:
+    // override nsVoidArray stuff so that they can be accessed by
+    // consumers of nsCOMArray
+    PRInt32 Count() const {
+        return mArray.Count();
+    }
+
+    nsISupports* ObjectAt(PRInt32 aIndex) const {
+        return NS_STATIC_CAST(nsISupports*, mArray.FastElementAt(aIndex));
+    }
+    
+    nsISupports* SafeObjectAt(PRInt32 aIndex) const {
+        return NS_STATIC_CAST(nsISupports*, mArray.SafeElementAt(aIndex));
+    }
+
+    nsISupports* operator[](PRInt32 aIndex) const {
+        return ObjectAt(aIndex);
+    }
+
+private:
+    
+    // the actual storage
+    nsVoidArray mArray;
+
+    // don't implement these, defaults will muck with refcounts!
+    nsCOMArray_base& operator=(const nsCOMArray_base& other);
+};
+
+// a non-XPCOM, refcounting array of XPCOM objects
+// used as a member variable or stack variable - this object is NOT
+// refcounted, but the objects that it holds are
+//
+// most of the read-only accessors like ObjectAt()/etc do NOT refcount
+// on the way out. This means that you can do one of two things:
+//
+// * does an addref, but holds onto a reference
+// nsCOMPtr<T> foo = array[i];
+//
+// * avoids the refcount, but foo might go stale if array[i] is ever
+// * modified/removed. Be careful not to NS_RELEASE(foo)!
+// T* foo = array[i];
+//
+// This array will accept null as an argument for any object, and will
+// store null in the array, just like nsVoidArray. But that also means
+// that methods like ObjectAt() may return null when referring to an
+// existing, but null entry in the array.
+template <class T>
+class nsCOMArray : public nsCOMArray_base
+{
+ public:
+    nsCOMArray() {}
+    nsCOMArray(PRInt32 aCount) : nsCOMArray_base(aCount) {}
+    
+    // only to be used by trusted classes who are going to pass us the
+    // right type!
+    nsCOMArray(const nsCOMArray<T>& aOther) : nsCOMArray_base(aOther) { }
+
+    ~nsCOMArray() {}
+
+    // these do NOT refcount on the way out, for speed
+    T* ObjectAt(PRInt32 aIndex) const {
+        return NS_STATIC_CAST(T*,nsCOMArray_base::ObjectAt(aIndex));
+    }
+
+    // these do NOT refcount on the way out, for speed
+    T* SafeObjectAt(PRInt32 aIndex) const {
+        return NS_STATIC_CAST(T*,nsCOMArray_base::SafeObjectAt(aIndex));
+    }
+
+    // indexing operator for syntactic sugar
+    T* operator[](PRInt32 aIndex) const {
+        return ObjectAt(aIndex);
+    }
+
+    // index of the element in question.. does NOT refcount
+    // note: this does not check COM object identity. Use
+    // IndexOfObject() for that purpose
+    PRInt32 IndexOf(T* aObject) const {
+        return nsCOMArray_base::IndexOf(NS_STATIC_CAST(nsISupports*, aObject));
+    }
+
+    // index of the element in question.. be careful!
+    // this is much slower than IndexOf() because it uses
+    // QueryInterface to determine actual COM identity of the object
+    // if you need to do this frequently then consider enforcing
+    // COM object identity before adding/comparing elements
+    PRInt32 IndexOfObject(T* aObject) const {
+        return nsCOMArray_base::IndexOfObject(NS_STATIC_CAST(nsISupports*, aObject));
+    }
+
+    // inserts aObject at aIndex, shifting the objects at aIndex and
+    // later to make space
+    PRBool InsertObjectAt(T* aObject, PRInt32 aIndex) {
+        return nsCOMArray_base::InsertObjectAt(NS_STATIC_CAST(nsISupports*, aObject), aIndex);
+    }
+
+    // inserts the objects from aObject at aIndex, shifting the
+    // objects at aIndex and later to make space
+    PRBool InsertObjectsAt(const nsCOMArray<T>& aObjects, PRInt32 aIndex) {
+        return nsCOMArray_base::InsertObjectsAt(aObjects, aIndex);
+    }
+
+    // replaces an existing element. Warning: if the array grows,
+    // the newly created entries will all be null
+    PRBool ReplaceObjectAt(T* aObject, PRInt32 aIndex) {
+        return nsCOMArray_base::ReplaceObjectAt(NS_STATIC_CAST(nsISupports*, aObject), aIndex);
+    }
+
+    // override nsVoidArray stuff so that they can be accessed by
+    // other methods
+
+    // elements in the array (including null elements!)
+    PRInt32 Count() const {
+        return nsCOMArray_base::Count();
+    }
+
+    // remove all elements in the array, and call NS_RELEASE on each one
+    void Clear() {
+        nsCOMArray_base::Clear();
+    }
+
+    // Enumerator callback function. Return PR_FALSE to stop
+    // Here's a more readable form:
+    // PRBool PR_CALLBACK enumerate(T* aElement, void* aData)
+    typedef PRBool (* PR_CALLBACK nsCOMArrayEnumFunc)
+        (T* aElement, void *aData);
+    
+    // enumerate through the array with a callback. 
+    PRBool EnumerateForwards(nsCOMArrayEnumFunc aFunc, void* aData) {
+        return nsCOMArray_base::EnumerateForwards(nsVoidArrayEnumFunc(aFunc),
+                                                  aData);
+    }
+
+    PRBool EnumerateBackwards(nsCOMArrayEnumFunc aFunc, void* aData) {
+        return nsCOMArray_base::EnumerateBackwards(nsVoidArrayEnumFunc(aFunc),
+                                                  aData);
+    }
+    
+    typedef int (* PR_CALLBACK nsCOMArrayComparatorFunc)
+        (T* aElement1, T* aElement2, void* aData);
+        
+    void Sort(nsCOMArrayComparatorFunc aFunc, void* aData) {
+        nsCOMArray_base::Sort(nsVoidArrayComparatorFunc(aFunc), aData);
+    }
+
+    // append an object, growing the array as necessary
+    PRBool AppendObject(T *aObject) {
+        return nsCOMArray_base::AppendObject(NS_STATIC_CAST(nsISupports*, aObject));
+    }
+
+    // append objects, growing the array as necessary
+    PRBool AppendObjects(const nsCOMArray<T>& aObjects) {
+        return nsCOMArray_base::AppendObjects(aObjects);
+    }
+    
+    // remove the first instance of the given object and shrink the
+    // array as necessary
+    // Warning: if you pass null here, it will remove the first null element
+    PRBool RemoveObject(T *aObject) {
+        return nsCOMArray_base::RemoveObject(NS_STATIC_CAST(nsISupports*, aObject));
+    }
+
+    // remove an element at a specific position, shrinking the array
+    // as necessary
+    PRBool RemoveObjectAt(PRInt32 aIndex) {
+        return nsCOMArray_base::RemoveObjectAt(aIndex);
+    }
+
+private:
+
+    // don't implement these!
+    nsCOMArray<T>& operator=(const nsCOMArray<T>& other);
+};
+
+
+#endif