From 165de1002719175c75df61913d36c2189538a84b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tor=20Arne=20Vestb=C3=B8?= <tor.arne.vestbo@qt.io>
Date: Tue, 2 May 2017 19:23:13 +0200
Subject: Introduce helper class QTaggedPointer

Useful for attaching small bits of information in the alignment bits of
a naked pointer. For use in the new property system as well as in
qtdeclarative (where currently a similar class exists as private API).

Change-Id: Idf9b93e714e15129f302e16425dbeda94bcd207b
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
---
 src/corelib/io/qdebug.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/corelib/io/qdebug.h')

diff --git a/src/corelib/io/qdebug.h b/src/corelib/io/qdebug.h
index e14d31f38a..aa69a1ae23 100644
--- a/src/corelib/io/qdebug.h
+++ b/src/corelib/io/qdebug.h
@@ -356,6 +356,16 @@ inline QDebug operator<<(QDebug debug, const QSharedPointer<T> &ptr)
     return debug;
 }
 
+template <typename T, typename Tag> class QTaggedPointer;
+
+template <typename T, typename Tag>
+inline QDebug operator<<(QDebug debug, const QTaggedPointer<T, Tag> &ptr)
+{
+    QDebugStateSaver saver(debug);
+    debug.nospace() << "QTaggedPointer(" << ptr.pointer() << ", " << ptr.tag() << ")";
+    return debug;
+}
+
 Q_CORE_EXPORT void qt_QMetaEnum_flagDebugOperator(QDebug &debug, size_t sizeofT, int value);
 
 template <typename Int>
-- 
cgit v1.2.3