Doc: Fix documentation for deprecated QSet functions

QDoc has trouble applying the \obsolete command for multiple
topic (\fn) commands in one go. Separate them out and expand
the reasoning for deprecation.

Mark the rest of the deprecated functions and typedefs related
to reverse iterators as \obsolete.

Change-Id: I09858efd7e1e5fc890d4f3f063f00c8812fc0b52
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 80 insertions, 6 deletions

diff --git a/src/corelib/tools/qset.qdoc b/src/corelib/tools/qset.qdoc
index 33a0697e12..42dd1288ac 100644
--- a/src/corelib/tools/qset.qdoc
+++ b/src/corelib/tools/qset.qdoc
@@ -399,6 +399,7 @@
 */
 
 /*! \fn template <class T> QSet<T>::reverse_iterator QSet<T>::rbegin()
+    \obsolete Deprecated in order to align with std::unordered_set functionality.
     \since 5.6
 
     Returns a \l{STL-style iterators}{STL-style} reverse iterator pointing to the first
@@ -408,11 +409,13 @@
 */
 
 /*! \fn template <class T> QSet<T>::const_reverse_iterator QSet<T>::rbegin() const
+    \obsolete Deprecated in order to align with std::unordered_set functionality.
     \since 5.6
     \overload
 */
 
 /*! \fn template <class T> QSet<T>::const_reverse_iterator QSet<T>::crbegin() const
+    \obsolete Deprecated in order to align with std::unordered_set functionality.
     \since 5.6
 
     Returns a const \l{STL-style iterators}{STL-style} reverse iterator pointing to the first
@@ -422,6 +425,7 @@
 */
 
 /*! \fn template <class T> QSet<T>::reverse_iterator QSet<T>::rend()
+    \obsolete Deprecated in order to align with std::unordered_set functionality.
     \since 5.6
 
     Returns a \l{STL-style iterators}{STL-style} reverse iterator pointing to one past
@@ -431,11 +435,13 @@
 */
 
 /*! \fn template <class T> QSet<T>::const_reverse_iterator QSet<T>::rend() const
+    \obsolete Deprecated in order to align with std::unordered_set functionality.
     \since 5.6
     \overload
 */
 
 /*! \fn template <class T> QSet<T>::const_reverse_iterator QSet<T>::crend() const
+    \obsolete Deprecated in order to align with std::unordered_set functionality.
     \since 5.6
 
     Returns a const \l{STL-style iterators}{STL-style} reverse iterator pointing to one
@@ -507,6 +513,7 @@
 
 /*! \typedef QSet::reverse_iterator
     \since 5.6
+    \obsolete Deprecated in order to align with std::unordered_set functionality.
 
     The QSet::reverse_iterator typedef provides an STL-style non-const
     reverse iterator for QSet.
@@ -523,6 +530,7 @@
 
 /*! \typedef QSet::const_reverse_iterator
     \since 5.6
+    \obsolete Deprecated in order to align with std::unordered_set functionality.
 
     The QSet::const_reverse_iterator typedef provides an STL-style const
     reverse iterator for QSet.
@@ -921,8 +929,20 @@
 
 /*!
     \fn template <class T> QSet<T>::iterator &QSet<T>::iterator::operator--()
+    \obsolete This operator is deprecated in order to align with std::unordered_set functionality.
+
+    The prefix -- operator (\c{--it}) makes the preceding item
+    current and returns an iterator to the new current item.
+
+    Calling this function on QSet::begin() leads to undefined
+    results.
+
+    \sa operator++()
+*/
+
+/*!
     \fn template <class T> QSet<T>::const_iterator &QSet<T>::const_iterator::operator--()
-    \obsolete
+    \obsolete This operator is deprecated in order to align with std::unordered_set functionality.
 
     The prefix -- operator (\c{--it}) makes the preceding item
     current and returns an iterator to the new current item.
@@ -935,8 +955,17 @@
 
 /*!
     \fn template <class T> QSet<T>::iterator QSet<T>::iterator::operator--(int)
+    \obsolete This operator is deprecated in order to align with std::unordered_set functionality.
+
+    \overload
+
+    The postfix -- operator (\c{it--}) makes the preceding item
+    current and returns an iterator to the previously current item.
+*/
+
+/*!
     \fn template <class T> QSet<T>::const_iterator QSet<T>::const_iterator::operator--(int)
-    \obsolete
+    \obsolete This operator is deprecated in order to align with std::unordered_set functionality.
 
     \overload
 
@@ -946,8 +975,19 @@
 
 /*!
     \fn template <class T> QSet<T>::iterator QSet<T>::iterator::operator+(int j) const
+    \obsolete This operator is deprecated in order to align with std::unordered_set functionality.
+
+    Returns an iterator to the item at \a j positions forward from
+    this iterator. (If \a j is negative, the iterator goes backward.)
+
+    This operation can be slow for large \a j values.
+
+    \sa operator-()
+*/
+
+/*!
     \fn template <class T> QSet<T>::const_iterator QSet<T>::const_iterator::operator+(int j) const
-    \obsolete
+    \obsolete This operator is deprecated in order to align with std::unordered_set functionality.
 
     Returns an iterator to the item at \a j positions forward from
     this iterator. (If \a j is negative, the iterator goes backward.)
@@ -959,8 +999,19 @@
 
 /*!
     \fn template <class T> QSet<T>::iterator QSet<T>::iterator::operator-(int j) const
+    \obsolete This operator is deprecated in order to align with std::unordered_set functionality.
+
+    Returns an iterator to the item at \a j positions backward from
+    this iterator. (If \a j is negative, the iterator goes forward.)
+
+    This operation can be slow for large \a j values.
+
+    \sa operator+()
+*/
+
+/*!
     \fn template <class T> QSet<T>::const_iterator QSet<T>::const_iterator::operator-(int j) const
-    \obsolete
+    \obsolete This operator is deprecated in order to align with std::unordered_set functionality.
 
     Returns an iterator to the item at \a j positions backward from
     this iterator. (If \a j is negative, the iterator goes forward.)
@@ -972,8 +1023,20 @@
 
 /*!
     \fn template <class T> QSet<T>::iterator &QSet<T>::iterator::operator+=(int j)
+    \obsolete This operator is deprecated in order to align with std::unordered_set functionality.
+
+    Advances the iterator by \a j items. (If \a j is negative, the
+    iterator goes backward.)
+
+    This operation can be slow for large \a j values.
+
+    \sa operator-=(), operator+()
+
+*/
+
+/*!
     \fn template <class T> QSet<T>::const_iterator &QSet<T>::const_iterator::operator+=(int j)
-    \obsolete
+    \obsolete This operator is deprecated in order to align with std::unordered_set functionality.
 
     Advances the iterator by \a j items. (If \a j is negative, the
     iterator goes backward.)
@@ -985,8 +1048,19 @@
 
 /*!
     \fn template <class T> QSet<T>::iterator &QSet<T>::iterator::operator-=(int j)
+    \obsolete This operator is deprecated in order to align with std::unordered_set functionality.
+
+    Makes the iterator go back by \a j items. (If \a j is negative,
+    the iterator goes forward.)
+
+    This operation can be slow for large \a j values.
+
+    \sa operator+=(), operator-()
+*/
+
+/*!
     \fn template <class T> QSet<T>::const_iterator &QSet<T>::const_iterator::operator-=(int j)
-    \obsolete
+    \obsolete This operator is deprecated in order to align with std::unordered_set functionality.
 
     Makes the iterator go back by \a j items. (If \a j is negative,
     the iterator goes forward.)