ENH: Adding auto_ptr to KWSys to provide a conforming version everywhere.

Source/kwsys/CMakeLists.txt

@@ -412,7 +412,10 @@ ENDFOREACH(header)
 # selected components.  Initialize with required components.
 SET(KWSYS_CLASSES)
 SET(KWSYS_H_FILES Configure SharedForward)
-SET(KWSYS_HXX_FILES Configure String hashtable hash_fun hash_map hash_set)
+SET(KWSYS_HXX_FILES Configure String
+  hashtable hash_fun hash_map hash_set
+  auto_ptr
+  )
 
 # Enforce component dependencies.
 IF(KWSYS_USE_SystemTools)

Source/kwsys/auto_ptr.hxx.in

@@ -0,0 +1,78 @@
+/*=========================================================================
+
+  Program:   KWSys - Kitware System Library
+  Module:    $RCSfile$
+
+  Copyright (c) Kitware, Inc., Insight Consortium.  All rights reserved.
+  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+#ifndef @KWSYS_NAMESPACE@_auto_ptr_hxx
+#define @KWSYS_NAMESPACE@_auto_ptr_hxx
+
+#if !((defined(_MSC_VER) && _MSC_VER < 1300) || defined(__BORLANDC__))
+
+// Use the conforming implementation provided by the compiler.
+
+#include <@KWSYS_NAMESPACE@/stl/memory>
+
+namespace @KWSYS_NAMESPACE@
+{
+
+using @KWSYS_NAMESPACE@_stl::auto_ptr;
+
+}
+
+#else
+
+// This compiler does not have a conforming implementation.  Use our
+// own.
+
+namespace @KWSYS_NAMESPACE@
+{
+
+// C++98 Standard Section 20.4.5 - Template class auto_ptr.
+template <class X>
+class auto_ptr
+{
+  template <class Y> struct auto_ptr_ref
+  {
+    auto_ptr<Y>& p_;
+    explicit auto_ptr_ref(auto_ptr<Y>& p): p_(p) {}
+  };
+  X* x_;
+public:
+  typedef X element_type;
+
+  template <class Y>
+  auto_ptr(auto_ptr<Y>& a) throw(): x_(a.release()) {}
+  template <class Y>
+  auto_ptr& operator=(auto_ptr<Y>& a) throw()
+    { reset(a.release()); return *this; }
+
+  explicit auto_ptr(X* p=0) throw(): x_(p) {}
+  auto_ptr(auto_ptr& a) throw(): x_(a.release()) {}
+  auto_ptr& operator=(auto_ptr& a) throw() { reset(a.release()); return *this; }
+  ~auto_ptr() throw() { delete get(); }
+
+  X& operator*() const throw() { return *get(); }
+  X* operator->() const throw() { return get(); }
+  X* get() const throw() { return x_; }
+  X* release() throw() { X* x = x_; x_ = 0; return x; }
+  void reset(X* p=0) throw() { if(get() != p) { delete get(); x_ = p; } }
+
+  auto_ptr(auto_ptr_ref<X> r) throw(): x_(r.p_.release()) {}
+  template <class Y> operator auto_ptr_ref<Y>() throw() { return *this; }
+  template <class Y> operator auto_ptr<Y>() throw() { return release(); }
+  auto_ptr& operator=(auto_ptr_ref<X> r) throw() { x_ = r.p_.release(); return *this; }
+};
+
+} // namespace @KWSYS_NAMESPACE@
+
+#endif
+
+#endif