minix/external/bsd/kyua-cli/dist/utils/auto_array.hpp

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// Copyright 2010 Google Inc.
// 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
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/// \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 <cstddef>
namespace utils {
template< class > class auto_array;
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)