Make findAmPm actually return the relevant enum, instead of int.

The enum needed a name to make that possible, of course.
The one overt int return -1 needed to be made explicitly Neither, too.

Change-Id: I3930bf03a7ee5e1619a1c74f9ca54faf6a6c5b2f
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@theqtcompany.com>

src/corelib/tools/qdatetimeparser.cpp

@@ -1355,22 +1355,20 @@ int QDateTimeParser::findDay(const QString &str1, int startDay, int sectionIndex
 /*!
   \internal
 
-  returns
-  0 if str == tr("AM")
-  1 if str == tr("PM")
-  2 if str can become tr("AM")
-  3 if str can become tr("PM")
-  4 if str can become tr("PM") and can become tr("AM")
-  -1 can't become anything sensible
-
+  Returns
+  AM if str == tr("AM")
+  PM if str == tr("PM")
+  PossibleAM if str can become tr("AM")
+  PossiblePM if str can become tr("PM")
+  PossibleBoth if str can become tr("PM") and can become tr("AM")
+  Neither if str can't become anything sensible
 */
-
-int QDateTimeParser::findAmPm(QString &str, int sectionIndex, int *used) const
+QDateTimeParser::AmPmFinder QDateTimeParser::findAmPm(QString &str, int sectionIndex, int *used) const
 {
     const SectionNode &s = sectionNode(sectionIndex);
     if (s.type != AmPmSection) {
         qWarning("QDateTimeParser::findAmPm Internal error");
-        return -1;
+        return Neither;
     }
     if (used)
         *used = str.size();

src/corelib/tools/qdatetimeparser_p.h

@@ -97,7 +97,7 @@ public:
         none.zeroesAdded = 0;
     }
     virtual ~QDateTimeParser() {}
-    enum {
+    enum AmPmFinder {
         Neither = -1,
         AM = 0,
         PM = 1,
@@ -201,7 +201,7 @@ public:
     int findDay(const QString &str1, int intDaystart, int sectionIndex,
                 QString *dayName = 0, int *used = 0) const;
 #endif
-    int findAmPm(QString &str1, int index, int *used = 0) const;
+    AmPmFinder findAmPm(QString &str, int index, int *used = 0) const;
     bool potentialValue(const QString &str, int min, int max, int index,
                         const QDateTime &currentValue, int insert) const;
     bool skipToNextSection(int section, const QDateTime &current, const QString &sectionText) const;