QDebug: refactor streaming of sequential containers and add suppoprt for STL types

What triggered this change was the use of QVector::toList() in
op<<(QDebug, QVector).

Only added support for STL types of which we already include the
headers.

[ChangeLog][QtCore][QDebug] Can now output std::vector, std::list,
std::map, and std::multimap.

Change-Id: I49581e3038daa7626b00169430b72d3d5175eae7
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/src/corelib/io/qdebug.cpp b/src/corelib/io/qdebug.cpp
index 81af96b96b..002c9bcda2 100644
--- a/src/corelib/io/qdebug.cpp
+++ b/src/corelib/io/qdebug.cpp
@@ -704,6 +704,15 @@ QDebug &QDebug::resetFormat()
 */
 
 /*!
+    \fn QDebug operator<<(QDebug stream, const std::list<T, Alloc> &list)
+    \relates QDebug
+    \since 5.7
+
+    Writes the contents of \a list to \a stream. \c T needs to
+    support streaming into QDebug.
+*/
+
+/*!
     \fn QDebug operator<<(QDebug stream, const QVector<T> &vector)
     \relates QDebug
 
@@ -712,6 +721,15 @@ QDebug &QDebug::resetFormat()
 */
 
 /*!
+    \fn QDebug operator<<(QDebug stream, const std::vector<T, Alloc> &vector)
+    \relates QDebug
+    \since 5.7
+
+    Writes the contents of \a vector to \a stream. \c T needs to
+    support streaming into QDebug.
+*/
+
+/*!
     \fn QDebug operator<<(QDebug stream, const QSet<T> &set)
     \relates QDebug
 
@@ -728,6 +746,24 @@ QDebug &QDebug::resetFormat()
 */
 
 /*!
+    \fn QDebug operator<<(QDebug stream, const std::map<Key, T, Compare, Alloc> &map)
+    \relates QDebug
+    \since 5.7
+
+    Writes the contents of \a map to \a stream. Both \c Key and
+    \c T need to support streaming into QDebug.
+*/
+
+/*!
+    \fn QDebug operator<<(QDebug stream, const std::multimap<Key, T, Compare, Alloc> &map)
+    \relates QDebug
+    \since 5.7
+
+    Writes the contents of \a map to \a stream. Both \c Key and
+    \c T need to support streaming into QDebug.
+*/
+
+/*!
     \fn QDebug operator<<(QDebug stream, const QHash<Key, T> &hash)
     \relates QDebug