1 #ifndef BOOST_SCOPED_ARRAY_HPP_INCLUDED
2 #define BOOST_SCOPED_ARRAY_HPP_INCLUDED
4 // (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
5 // Copyright (c) 2001, 2002 Peter Dimov
7 // Distributed under the Boost Software License, Version 1.0. (See
8 // accompanying file LICENSE_1_0.txt or copy at
9 // http://www.boost.org/LICENSE_1_0.txt)
11 // http://www.boost.org/libs/smart_ptr/scoped_array.htm
14 #include <boost/assert.hpp>
15 #include <boost/checked_delete.hpp>
16 #include <boost/config.hpp> // in case ptrdiff_t not in std
18 #include <boost/detail/workaround.hpp>
20 #include <cstddef> // for std::ptrdiff_t
27 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
29 void sp_array_constructor_hook(void * p);
30 void sp_array_destructor_hook(void * p);
34 // scoped_array extends scoped_ptr to arrays. Deletion of the array pointed to
35 // is guaranteed, either on destruction of the scoped_array or via an explicit
36 // reset(). Use shared_array or std::vector if your needs are more complex.
38 template<class T> class scoped_array // noncopyable
44 scoped_array(scoped_array const &);
45 scoped_array & operator=(scoped_array const &);
47 typedef scoped_array<T> this_type;
49 void operator==( scoped_array const& ) const;
50 void operator!=( scoped_array const& ) const;
54 typedef T element_type;
56 explicit scoped_array(T * p = 0) : ptr(p) // never throws
58 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
59 boost::sp_array_constructor_hook(ptr);
63 ~scoped_array() // never throws
65 #if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
66 boost::sp_array_destructor_hook(ptr);
68 boost::checked_array_delete(ptr);
71 void reset(T * p = 0) // never throws
73 BOOST_ASSERT(p == 0 || p != ptr); // catch self-reset errors
74 this_type(p).swap(*this);
77 T & operator[](std::ptrdiff_t i) const // never throws
79 BOOST_ASSERT(ptr != 0);
84 T * get() const // never throws
89 // implicit conversion to "bool"
91 #if defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x530)
93 operator bool () const
98 #elif defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
99 typedef T * (this_type::*unspecified_bool_type)() const;
101 operator unspecified_bool_type() const // never throws
103 return ptr == 0? 0: &this_type::get;
108 typedef T * this_type::*unspecified_bool_type;
110 operator unspecified_bool_type() const // never throws
112 return ptr == 0? 0: &this_type::ptr;
117 bool operator! () const // never throws
122 void swap(scoped_array & b) // never throws
131 template<class T> inline void swap(scoped_array<T> & a, scoped_array<T> & b) // never throws
138 #endif // #ifndef BOOST_SCOPED_ARRAY_HPP_INCLUDED