From e645fc2693acc796304498909786b7b47005b429 Mon Sep 17 00:00:00 2001
From: Martin Lucina <martin@lucina.net>
Date: Mon, 23 Jan 2012 08:53:35 +0100
Subject: Imported Upstream version 2.1.3

---
 src/array.hpp | 147 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 src/array.hpp

(limited to 'src/array.hpp')

diff --git a/src/array.hpp b/src/array.hpp
new file mode 100644
index 0000000..b9f7f78
--- /dev/null
+++ b/src/array.hpp
@@ -0,0 +1,147 @@
+/*
+    Copyright (c) 2007-2011 iMatix Corporation
+    Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ 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 Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __ZMQ_ARRAY_INCLUDED__
+#define __ZMQ_ARRAY_INCLUDED__
+
+#include <vector>
+#include <algorithm>
+
+namespace zmq
+{
+
+    //  Base class for objects stored in the array. Note that each object can
+    //  be stored in at most one array.
+
+    class array_item_t
+    {
+    public:
+
+        inline array_item_t () :
+            array_index (-1)
+        {
+        }
+
+        //  The destructor doesn't have to be virtual. It is mad virtual
+        //  just to keep ICC and code checking tools from complaining.
+        inline virtual ~array_item_t ()
+        {
+        }
+
+        inline void set_array_index (int index_)
+        {
+            array_index = index_;
+        }
+
+        inline int get_array_index ()
+        {
+            return array_index;
+        }
+
+    private:
+
+        int array_index;
+
+        array_item_t (const array_item_t&);
+        const array_item_t &operator = (const array_item_t&);
+    };
+
+    //  Fast array implementation with O(1) access to item, insertion and
+    //  removal. Array stores pointers rather than objects. The objects have
+    //  to be derived from array_item_t class.
+
+    template <typename T> class array_t
+    {
+    public:
+
+        typedef typename std::vector <T*>::size_type size_type;
+
+        inline array_t ()
+        {
+        }
+
+        inline ~array_t ()
+        {
+        }
+
+        inline size_type size ()
+        {
+            return items.size ();
+        }
+
+        inline bool empty ()
+        {
+            return items.empty ();
+        }
+
+        inline T *&operator [] (size_type index_)
+        {
+            return items [index_];
+        }
+
+        inline void push_back (T *item_)
+        {
+            if (item_)
+                item_->set_array_index (items.size ());
+            items.push_back (item_);
+        }
+
+        inline void erase (T *item_) {
+            erase (item_->get_array_index ());
+        }
+
+        inline void erase (size_type index_) {
+            if (items.back ())
+                items.back ()->set_array_index (index_);
+            items [index_] = items.back ();
+            items.pop_back ();
+        }
+
+        inline void swap (size_type index1_, size_type index2_)
+        {
+            if (items [index1_])
+                items [index1_]->set_array_index (index2_);
+            if (items [index2_])
+                items [index2_]->set_array_index (index1_);
+            std::swap (items [index1_], items [index2_]);
+        }
+
+        inline void clear ()
+        {
+            items.clear ();
+        }
+
+        inline size_type index (T *item_)
+        {
+            return (size_type) item_->get_array_index ();
+        }
+
+    private:
+
+        typedef std::vector <T*> items_t;
+        items_t items;
+
+        array_t (const array_t&);
+        const array_t &operator = (const array_t&);
+    };
+
+}
+
+#endif
-- 
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