From 917c4dc9dd89eb578c8029da054fb8105602b4fd Mon Sep 17 00:00:00 2001
From: Pavel Krajcevski <pavel@cs.unc.edu>
Date: Thu, 23 Jan 2014 14:38:02 -0500
Subject: [PATCH] Add a scoped allocator in order to deal with errors cleaner

---
 Base/CMakeLists.txt            |  1 +
 Base/include/ScopedAllocator.h | 94 ++++++++++++++++++++++++++++++++++
 2 files changed, 95 insertions(+)
 create mode 100644 Base/include/ScopedAllocator.h

diff --git a/Base/CMakeLists.txt b/Base/CMakeLists.txt
index bee31e9..69ea8d3 100644
--- a/Base/CMakeLists.txt
+++ b/Base/CMakeLists.txt
@@ -64,6 +64,7 @@ SET( HEADERS
   "include/CompressionJob.h"
   "include/Pixel.h"
   "include/IPixel.h"
+  "include/ScopedAllocator.h"
   "include/VectorBase.h"
   "include/Vector2.h"
   "include/Vector3.h"
diff --git a/Base/include/ScopedAllocator.h b/Base/include/ScopedAllocator.h
new file mode 100644
index 0000000..1696b02
--- /dev/null
+++ b/Base/include/ScopedAllocator.h
@@ -0,0 +1,94 @@
+/* FasTC
+ * Copyright (c) 2014 University of North Carolina at Chapel Hill.
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for educational, research, and non-profit purposes, without
+ * fee, and without a written agreement is hereby granted, provided that the
+ * above copyright notice, this paragraph, and the following four paragraphs
+ * appear in all copies.
+ *
+ * Permission to incorporate this software into commercial products may be
+ * obtained by contacting the authors or the Office of Technology Development
+ * at the University of North Carolina at Chapel Hill <otd@unc.edu>.
+ *
+ * This software program and documentation are copyrighted by the University of
+ * North Carolina at Chapel Hill. The software program and documentation are
+ * supplied "as is," without any accompanying services from the University of
+ * North Carolina at Chapel Hill or the authors. The University of North
+ * Carolina at Chapel Hill and the authors do not warrant that the operation of
+ * the program will be uninterrupted or error-free. The end-user understands
+ * that the program was developed for research purposes and is advised not to
+ * rely exclusively on the program for any reason.
+ *
+ * IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
+ * AUTHORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
+ * OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF
+ * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA
+ * AT CHAPEL HILL OR THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY
+ * DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY 
+ * STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON
+ * AN "AS IS" BASIS, AND THE UNIVERSITY  OF NORTH CAROLINA AT CHAPEL HILL AND
+ * THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, 
+ * ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Please send all BUG REPORTS to <pavel@cs.unc.edu>.
+ *
+ * The authors may be contacted via:
+ *
+ * Pavel Krajcevski
+ * Dept of Computer Science
+ * 201 S Columbia St
+ * Frederick P. Brooks, Jr. Computer Science Bldg
+ * Chapel Hill, NC 27599-3175
+ * USA
+ * 
+ * <http://gamma.cs.unc.edu/FasTC/>
+ */
+
+#ifndef BASE_INCLUDE_SCOPEDALLOCATOR_H_
+#define BASE_INCLUDE_SCOPEDALLOCATOR_H_
+
+#include "TexCompTypes.h"
+
+namespace FasTC {
+
+  template<typename T>
+  class ScopedAllocator {
+   private:
+    T *m_Ptr;
+    ScopedAllocator() : m_Ptr(NULL) { }
+   public:
+    static ScopedAllocator<T> Create(uint32 nBytes) {
+      ScopedAllocator<T> actr;
+      actr.m_Ptr = new T[nBytes];
+      return actr;
+    }
+
+    ~ScopedAllocator() {
+      if(m_Ptr) {
+        delete m_Ptr;
+        m_Ptr = NULL;
+      }
+    }
+
+    T &operator[](uint32 idx) {
+      return m_Ptr[idx];
+    }
+
+    operator T *() {
+      return m_Ptr;
+    }
+
+    operator bool() {
+      return m_Ptr != NULL;
+    }
+  };
+
+}  // namespace FasTC
+
+#endif  // BASE_INCLUDE_SCOPEDALLOCATOR_H_