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cppjansson/jansson_handle.hpp

@@ -0,0 +1,68 @@
+#pragma once
+
+#include <algorithm>
+
+struct json_t;
+
+namespace base
+{
+class JsonHandle
+{
+  void IncRef();
+  void DecRef();
+
+public:
+  JsonHandle(json_t * pJson = 0) : m_pJson(pJson)
+  {
+    IncRef();
+  }
+
+  JsonHandle(JsonHandle const & json) : m_pJson(json.m_pJson)
+  {
+    IncRef();
+  }
+
+  ~JsonHandle()
+  {
+    DecRef();
+  }
+
+  JsonHandle & operator = (JsonHandle const & json)
+  {
+    JsonHandle tmp(json);
+    tmp.swap(*this);
+    return *this;
+  }
+
+  void swap(JsonHandle & json)
+  {
+    std::swap(m_pJson, json.m_pJson);
+  }
+
+  json_t * get() const
+  {
+    return m_pJson;
+  }
+
+  json_t * operator -> () const
+  {
+    return m_pJson;
+  }
+
+  operator bool () const
+  {
+    return m_pJson != 0;
+  }
+
+  /// Attach newly created object without incrementing ref count (it's already == 1).
+  void AttachNew(json_t * pJson)
+  {
+    DecRef();
+
+    m_pJson = pJson;
+  }
+
+private:
+  json_t * m_pJson;
+};
+}  // namespace base