From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 2 Nov 2017 23:11:29 +0300
Subject: Add implementation

---
 mysql/extra/yassl/include/factory.hpp | 101 ++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 mysql/extra/yassl/include/factory.hpp

(limited to 'mysql/extra/yassl/include/factory.hpp')

diff --git a/mysql/extra/yassl/include/factory.hpp b/mysql/extra/yassl/include/factory.hpp
new file mode 100644
index 0000000..dd6532f
--- /dev/null
+++ b/mysql/extra/yassl/include/factory.hpp
@@ -0,0 +1,101 @@
+/*
+   Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; see the file COPYING. If not, write to the
+   Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+   MA  02110-1301  USA.
+*/
+
+/*  The factory header defines an Object Factory, used by SSL message and
+ *  handshake types.
+ *
+ *  See Desgin Pattern in GoF and Alexandrescu's chapter in Modern C++ Design,
+ *  page 208
+ */
+
+
+
+#ifndef yaSSL_FACTORY_HPP
+#define yaSSL_FACTORY_HPP
+
+#include STL_VECTOR_FILE
+#include STL_PAIR_FILE
+
+
+namespace STL = STL_NAMESPACE;
+
+
+
+
+
+namespace yaSSL {
+
+
+// Factory uses its callback map to create objects by id,
+// returning an abstract base pointer
+template<class    AbstractProduct, 
+         typename IdentifierType = int, 
+         typename ProductCreator = AbstractProduct* (*)()
+        >
+class Factory {                                             
+    typedef STL::pair<IdentifierType, ProductCreator> CallBack;
+    typedef STL::vector<CallBack> CallBackVector;
+
+    CallBackVector callbacks_;
+public:
+    // pass function pointer to register all callbacks upon creation
+    explicit Factory(void (*init)(Factory<AbstractProduct, IdentifierType,
+                                  ProductCreator>&))
+    { 
+        init(*this); 
+    }
+
+    // reserve place in vector before registering, used by init funcion
+    void Reserve(size_t sz)
+    {
+        callbacks_.reserve(sz);
+    }
+
+    // register callback
+    void Register(const IdentifierType& id, ProductCreator pc)
+    {
+        callbacks_.push_back(STL::make_pair(id, pc));
+    }
+
+    // THE Creator, returns a new object of the proper type or 0
+    AbstractProduct* CreateObject(const IdentifierType& id) const
+    {
+        typedef typename STL::vector<CallBack>::const_iterator cIter;
+        
+        cIter first = callbacks_.begin();
+        cIter last  = callbacks_.end();
+
+        while (first != last) {
+            if (first->first == id)
+                break;
+            ++first;
+        }
+
+        if (first == callbacks_.end())
+            return 0;
+        return (first->second)();
+    }
+private:
+    Factory(const Factory&);            // hide copy
+    Factory& operator=(const Factory&); // and assign
+};
+
+
+} // naemspace
+
+#endif // yaSSL_FACTORY_HPP
-- 
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