QREMatchIterator: add support for range-based for

Add begin()/end() on QRegularExpressionMatchIterator, making
iterators over an iterator (like directory_iterator).

[ChangeLog][QtCore][QRegularExpression] The iterator object
(QRegularExpressionMatchIterator) returned by a global match
is now usable in a range-based for loop.

Change-Id: If3d31bd2e84e7d1fb626a0b3d2745914dff03e39
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/tests/auto/corelib/text/qregularexpression/tst_qregularexpression.cpp b/tests/auto/corelib/text/qregularexpression/tst_qregularexpression.cpp
index a986223a87..dd96b158f4 100644
--- a/tests/auto/corelib/text/qregularexpression/tst_qregularexpression.cpp
+++ b/tests/auto/corelib/text/qregularexpression/tst_qregularexpression.cpp
@@ -184,6 +184,27 @@ bool operator==(const QRegularExpressionMatchIterator &iterator, const QList<Mat
     if (i.hasNext())
         return false;
 
+    i = iterator;
+
+    int index = 0;
+    for (const QRegularExpressionMatch &match : i) {
+        if (match != expectedMatchList[index++])
+            return false;
+    }
+
+    if (index != expectedMatchList.size())
+        return false;
+
+    // do it again
+    index = 0;
+    for (const QRegularExpressionMatch &match : i) {
+        if (match != expectedMatchList[index++])
+            return false;
+    }
+
+    if (index != expectedMatchList.size())
+        return false;
+
     return true;
 }