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+// Copyright 2010 The Kyua Authors.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+//   notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above copyright
+//   notice, this list of conditions and the following disclaimer in the
+//   documentation and/or other materials provided with the distribution.
+// * Neither the name of Google Inc. nor the names of its contributors
+//   may be used to endorse or promote products derived from this software
+//   without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+/// \file utils/auto_array.hpp
+/// Provides the utils::auto_array class.
+///
+/// The class is provided as a separate module on its own to minimize
+/// header-inclusion side-effects.
+
+#if !defined(UTILS_AUTO_ARRAY_HPP)
+#define UTILS_AUTO_ARRAY_HPP
+
+#include "utils/auto_array_fwd.hpp"
+
+#include <cstddef>
+
+namespace utils {
+
+
+namespace detail {
+
+
+/// Wrapper class to provide reference semantics for utils::auto_array.
+///
+/// This class is internally used, for example, to allow returning a
+/// utils::auto_array from a function.
+template< class T >
+class auto_array_ref {
+    /// Internal pointer to the dynamically-allocated array.
+    T* _ptr;
+
+    template< class > friend class utils::auto_array;
+
+public:
+    explicit auto_array_ref(T*);
+};
+
+
+}  // namespace detail
+
+
+/// A simple smart pointer for arrays providing strict ownership semantics.
+///
+/// This class is the counterpart of std::auto_ptr for arrays.  The semantics of
+/// the API of this class are the same as those of std::auto_ptr.
+///
+/// The wrapped pointer must be NULL or must have been allocated using operator
+/// new[].
+template< class T >
+class auto_array {
+    /// Internal pointer to the dynamically-allocated array.
+    T* _ptr;
+
+public:
+    auto_array(T* = NULL) throw();
+    auto_array(auto_array< T >&) throw();
+    auto_array(detail::auto_array_ref< T >) throw();
+    ~auto_array(void) throw();
+
+    T* get(void) throw();
+    const T* get(void) const throw();
+
+    T* release(void) throw();
+    void reset(T* = NULL) throw();
+
+    auto_array< T >& operator=(auto_array< T >&) throw();
+    auto_array< T >& operator=(detail::auto_array_ref< T >) throw();
+    T& operator[](int) throw();
+    const T& operator[](int) const throw();
+    operator detail::auto_array_ref< T >(void) throw();
+};
+
+
+}  // namespace utils
+
+
+#endif  // !defined(UTILS_AUTO_ARRAY_HPP)