1#ifndef BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED
2#define BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED
3
4// (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
5// Copyright (c) 2001, 2002 Peter Dimov
6//
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)
10//
11// See http://www.boost.org/libs/smart_ptr/ for documentation.
12
13#include <boost/config.hpp>
14#include <boost/assert.hpp>
15#include <boost/checked_delete.hpp>
16#include <boost/smart_ptr/detail/sp_nullptr_t.hpp>
17#include <boost/smart_ptr/detail/sp_noexcept.hpp>
18
19#include <boost/config/workaround.hpp>
20
21#include <cstddef> // for std::ptrdiff_t
22
23namespace boost
24{
25
26// Debug hooks
27
28#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
29
30void sp_array_constructor_hook(void * p);
31void sp_array_destructor_hook(void * p);
32
33#endif
34
35// scoped_array extends scoped_ptr to arrays. Deletion of the array pointed to
36// is guaranteed, either on destruction of the scoped_array or via an explicit
37// reset(). Use shared_array or std::vector if your needs are more complex.
38
39template<class T> class scoped_array // noncopyable
40{
41private:
42
43 T * px;
44
45 scoped_array(scoped_array const &);
46 scoped_array & operator=(scoped_array const &);
47
48 typedef scoped_array<T> this_type;
49
50 void operator==( scoped_array const& ) const;
51 void operator!=( scoped_array const& ) const;
52
53public:
54
55 typedef T element_type;
56
57 explicit scoped_array( T * p = 0 ) BOOST_SP_NOEXCEPT : px( p )
58 {
59#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
60 boost::sp_array_constructor_hook( px );
61#endif
62 }
63
64 ~scoped_array() BOOST_SP_NOEXCEPT
65 {
66#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
67 boost::sp_array_destructor_hook( px );
68#endif
69 boost::checked_array_delete( px );
70 }
71
72 void reset(T * p = 0) BOOST_SP_NOEXCEPT_WITH_ASSERT
73 {
74 BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors
75 this_type(p).swap(*this);
76 }
77
78 T & operator[](std::ptrdiff_t i) const BOOST_SP_NOEXCEPT_WITH_ASSERT
79 {
80 BOOST_ASSERT( px != 0 );
81 BOOST_ASSERT( i >= 0 );
82 return px[i];
83 }
84
85 T * get() const BOOST_SP_NOEXCEPT
86 {
87 return px;
88 }
89
90// implicit conversion to "bool"
91#include <boost/smart_ptr/detail/operator_bool.hpp>
92
93 void swap(scoped_array & b) BOOST_SP_NOEXCEPT
94 {
95 T * tmp = b.px;
96 b.px = px;
97 px = tmp;
98 }
99};
100
101#if !defined( BOOST_NO_CXX11_NULLPTR )
102
103template<class T> inline bool operator==( scoped_array<T> const & p, boost::detail::sp_nullptr_t ) BOOST_SP_NOEXCEPT
104{
105 return p.get() == 0;
106}
107
108template<class T> inline bool operator==( boost::detail::sp_nullptr_t, scoped_array<T> const & p ) BOOST_SP_NOEXCEPT
109{
110 return p.get() == 0;
111}
112
113template<class T> inline bool operator!=( scoped_array<T> const & p, boost::detail::sp_nullptr_t ) BOOST_SP_NOEXCEPT
114{
115 return p.get() != 0;
116}
117
118template<class T> inline bool operator!=( boost::detail::sp_nullptr_t, scoped_array<T> const & p ) BOOST_SP_NOEXCEPT
119{
120 return p.get() != 0;
121}
122
123#endif
124
125template<class T> inline void swap(scoped_array<T> & a, scoped_array<T> & b) BOOST_SP_NOEXCEPT
126{
127 a.swap(b);
128}
129
130} // namespace boost
131
132#endif // #ifndef BOOST_SMART_PTR_SCOPED_ARRAY_HPP_INCLUDED
133

source code of include/boost/smart_ptr/scoped_array.hpp