libstdc++-v3/include/bits/stl_construct.h

   1 /*
   2  *
   3  * Copyright (c) 1994
   4  * Hewlett-Packard Company
   5  *
   6  * Permission to use, copy, modify, distribute and sell this software
   7  * and its documentation for any purpose is hereby granted without fee,
   8  * provided that the above copyright notice appear in all copies and
   9  * that both that copyright notice and this permission notice appear
  10  * in supporting documentation.  Hewlett-Packard Company makes no
  11  * representations about the suitability of this software for any
  12  * purpose.  It is provided "as is" without express or implied warranty.
  13  *
  14  *
  15  * Copyright (c) 1996,1997
  16  * Silicon Graphics Computer Systems, Inc.
  17  *
  18  * Permission to use, copy, modify, distribute and sell this software
  19  * and its documentation for any purpose is hereby granted without fee,
  20  * provided that the above copyright notice appear in all copies and
  21  * that both that copyright notice and this permission notice appear
  22  * in supporting documentation.  Silicon Graphics makes no
  23  * representations about the suitability of this software for any
  24  * purpose.  It is provided "as is" without express or implied warranty.
  25  */
  26
  27 /* NOTE: This is an internal header file, included by other STL headers.
  28  *   You should not attempt to use it directly.
  29  */
  30
  31 #ifndef _CPP_BITS_STL_CONSTRUCT_H
  32 #define _CPP_BITS_STL_CONSTRUCT_H 1
  33
  34 #include <new>
  35
  36 namespace std
  37 {
  38
  39 // construct and destroy.  These functions are not part of the C++ standard,
  40 // and are provided for backward compatibility with the HP STL. We also
  41 // provide internal names _Construct and _Destroy that can be used within
  42 // the library, so that standard-conforming pieces don't have to rely on
  43 // non-standard extensions.
  44
  45 // Internal names
  46
  47 template <class _T1, class _T2>
  48 inline void _Construct(_T1* __p, const _T2& __value) {
  49 new ((void*) __p) _T1(__value);
  50 }
  51
  52 template <class _T1>
  53 inline void _Construct(_T1* __p) {
  54   new ((void*) __p) _T1();
  55 }
  56
  57 template <class _Tp>
  58 inline void _Destroy(_Tp* __pointer) {
  59   __pointer->~_Tp();
  60 }
  61
  62 template <class _ForwardIterator>
  63 void
  64 __destroy_aux(_ForwardIterator __first, _ForwardIterator __last, __false_type)
  65 {
  66   for ( ; __first != __last; ++__first)
  67     destroy(&*__first);
  68 }
  69
  70 template <class _ForwardIterator>
  71 inline void __destroy_aux(_ForwardIterator, _ForwardIterator, __true_type) {}
  72
  73 template <class _ForwardIterator, class _Tp>
  74 inline void
  75 __destroy(_ForwardIterator __first, _ForwardIterator __last, _Tp*)
  76 {
  77   typedef typename __type_traits<_Tp>::has_trivial_destructor
  78           _Trivial_destructor;
  79   __destroy_aux(__first, __last, _Trivial_destructor());
  80 }
  81
  82 template <class _ForwardIterator>
  83 inline void _Destroy(_ForwardIterator __first, _ForwardIterator __last) {
  84   __destroy(__first, __last, __value_type(__first));
  85 }
  86
  87 inline void _Destroy(char*, char*) {}
  88 inline void _Destroy(int*, int*) {}
  89 inline void _Destroy(long*, long*) {}
  90 inline void _Destroy(float*, float*) {}
  91 inline void _Destroy(double*, double*) {}
  92 inline void _Destroy(wchar_t*, wchar_t*) {}
  93
  94 // --------------------------------------------------
  95 // Old names from the HP STL.
  96
  97 template <class _T1, class _T2>
  98 inline void construct(_T1* __p, const _T2& __value) {
  99   _Construct(__p, __value);
 100 }
 101
 102 template <class _T1>
 103 inline void construct(_T1* __p) {
 104   _Construct(__p);
 105 }
 106
 107 template <class _Tp>
 108 inline void destroy(_Tp* __pointer) {
 109   _Destroy(__pointer);
 110 }
 111
 112 template <class _ForwardIterator>
 113 inline void destroy(_ForwardIterator __first, _ForwardIterator __last) {
 114   _Destroy(__first, __last);
 115 }
 116
 117 } // namespace std
 118
 119 #endif /* _CPP_BITS_STL_CONSTRUCT_H */
 120
 121 // Local Variables:
 122 // mode:C++
 123 // End: