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kdl_install/include/kdl/utilities/scoped_ptr.hpp

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+/***************************************************************************
+    scoped_ptr - a not too smart pointer for exception safe heap objects
+                       -------------------------
+    begin                : May 2019
+    copyright            : (C) 2019 Intermodalics
+ 
+ ***************************************************************************
+ *   This library 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 2.1 of the License, or (at your option) any later version.    *
+ *                                                                         *
+ *   This library 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 library; if not, write to the Free Software   *
+ *   Foundation, Inc., 59 Temple Place,                                    *
+ *   Suite 330, Boston, MA  02111-1307  USA                                *
+ *                                                                         *
+ ***************************************************************************/
+
+#if (__cplusplus > 199711L)
+#include <utility>
+#else
+#include <algorithm>
+#endif
+
+namespace KDL {
+
+template<typename T> class scoped_ptr;
+
+template<typename T> void swap(scoped_ptr<T>&, scoped_ptr<T>&);
+
+template<typename T>
+class scoped_ptr {
+ public:
+  scoped_ptr() : ptr_(0) { }
+  explicit scoped_ptr(T* p) : ptr_(p) { }
+
+  ~scoped_ptr() { delete ptr_; }
+
+  T* operator->() { return ptr_; }
+  const T* operator->() const { return ptr_; }
+
+  T* get() const { return ptr_; }
+
+  void reset(T* p = 0) {
+    T* old = ptr_;
+    ptr_ = p;
+    delete old;
+  }
+
+  T* release() {
+    T* old = ptr_;
+    ptr_ = 0;
+    return old;
+  }
+
+  friend void swap<>(scoped_ptr<T>& a, scoped_ptr<T>& b);
+
+ private:
+  scoped_ptr(const scoped_ptr&);  // not-copyable
+  scoped_ptr& operator=(const scoped_ptr&); // not-copyable
+
+  T* ptr_;
+};
+
+template<typename T>
+void swap(scoped_ptr<T>& a, scoped_ptr<T>& b) {
+  using std::swap;
+  swap(a.ptr_, b.ptr_);
+}
+
+
+} // namespace KDL