JSON: add some QStringView overloads

[ChangeLog][QtCore][JSON] Added overloads of functions taking key
strings as QStringView; in QJsonObject, QJsonValue and QJsonDocument.

Change-Id: I78b40aba8200003acfae257ff06f5f15737005e7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>

1 files changed, 22 insertions, 6 deletions

diff --git a/src/corelib/serialization/qjsonobject.h b/src/corelib/serialization/qjsonobject.h
index b12769d3d3..bdaf85b460 100644
--- a/src/corelib/serialization/qjsonobject.h
+++ b/src/corelib/serialization/qjsonobject.h
@@ -100,16 +100,26 @@ public:
     inline int length() const { return size(); }
     bool isEmpty() const;
 
+#if QT_STRINGVIEW_LEVEL < 2
     QJsonValue value(const QString &key) const;
-    QJsonValue value(QLatin1String key) const;
     QJsonValue operator[] (const QString &key) const;
-    QJsonValue operator[] (QLatin1String key) const { return value(key); }
     QJsonValueRef operator[] (const QString &key);
+#endif
+    QJsonValue value(QStringView key) const;
+    QJsonValue value(QLatin1String key) const;
+    QJsonValue operator[] (QStringView key) const { return value(key); }
+    QJsonValue operator[] (QLatin1String key) const { return value(key); }
+    QJsonValueRef operator[] (QStringView key);
     QJsonValueRef operator[] (QLatin1String key);
 
+#if QT_STRINGVIEW_LEVEL < 2
     void remove(const QString &key);
     QJsonValue take(const QString &key);
     bool contains(const QString &key) const;
+#endif
+    void remove(QStringView key);
+    QJsonValue take(QStringView key);
+    bool contains(QStringView key) const;
     bool contains(QLatin1String key) const;
 
     bool operator==(const QJsonObject &other) const;
@@ -218,13 +228,19 @@ public:
     // more Qt
     typedef iterator Iterator;
     typedef const_iterator ConstIterator;
+#if QT_STRINGVIEW_LEVEL < 2
     iterator find(const QString &key);
-    iterator find(QLatin1String key);
     const_iterator find(const QString &key) const { return constFind(key); }
-    const_iterator find(QLatin1String key) const { return constFind(key); }
     const_iterator constFind(const QString &key) const;
-    const_iterator constFind(QLatin1String key) const;
     iterator insert(const QString &key, const QJsonValue &value);
+#endif
+    iterator find(QStringView key);
+    iterator find(QLatin1String key);
+    const_iterator find(QStringView key) const { return constFind(key); }
+    const_iterator find(QLatin1String key) const { return constFind(key); }
+    const_iterator constFind(QStringView key) const;
+    const_iterator constFind(QLatin1String key) const;
+    iterator insert(QStringView key, const QJsonValue &value);
 
     // STL compatibility
     typedef QJsonValue mapped_type;
@@ -253,7 +269,7 @@ private:
     QJsonValue valueAt(int i) const;
     void setValueAt(int i, const QJsonValue &val);
     void removeAt(int i);
-    iterator insertAt(int i, const QString &key, const QJsonValue &val, bool exists);
+    iterator insertAt(int i, QStringView key, const QJsonValue &val, bool exists);
 
     QJsonPrivate::Data *d;
     QJsonPrivate::Object *o;