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_uninitialized.h
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1 /*
2  *
3  * Copyright (c) 1994
4  * Hewlett-Packard Company
5  *
6  * Copyright (c) 1996,1997
7  * Silicon Graphics Computer Systems, Inc.
8  *
9  * Copyright (c) 1997
10  * Moscow Center for SPARC Technology
11  *
12  * Copyright (c) 1999
13  * Boris Fomitchev
14  *
15  * This material is provided "as is", with absolutely no warranty expressed
16  * or implied. Any use is at your own risk.
17  *
18  * Permission to use or copy this software for any purpose is hereby granted
19  * without fee, provided the above notices are retained on all copies.
20  * Permission to modify the code and to distribute modified code is granted,
21  * provided the above notices are retained, and a notice that the code was
22  * modified is included with the above copyright notice.
23  *
24  */
25 
26 /* NOTE: This is an internal header file, included by other STL headers.
27  * You should not attempt to use it directly.
28  */
29 
30 #ifndef _STLP_INTERNAL_UNINITIALIZED_H
31 #define _STLP_INTERNAL_UNINITIALIZED_H
32 
33 #ifndef _STLP_INTERNAL_CSTRING
34 # include <stl/_cstring.h>
35 #endif
36 
37 #ifndef _STLP_INTERNAL_ALGOBASE_H
38 # include <stl/_algobase.h>
39 #endif
40 
41 #ifndef _STLP_INTERNAL_CONSTRUCT_H
42 # include <stl/_construct.h>
43 #endif
44 
46 
48 
49 // uninitialized_copy
50 
51 template <class _InputIter, class _OutputIter, class _Distance>
52 inline _OutputIter __ucopy(_InputIter __first, _InputIter __last,
53  _OutputIter __result, _Distance*) {
54  _OutputIter __cur = __result;
55  _STLP_TRY {
56  for ( ; __first != __last; ++__first, ++__cur)
57  _Param_Construct(&*__cur, *__first);
58  return __cur;
59  }
60  _STLP_UNWIND(_STLP_STD::_Destroy_Range(__result, __cur))
62 }
63 
64 template <class _InputIter, class _OutputIter, class _Distance>
65 inline _OutputIter __ucopy(_InputIter __first, _InputIter __last,
66  _OutputIter __result, const input_iterator_tag &, _Distance* __d)
67 { return __ucopy(__first, __last, __result, __d); }
68 
69 #if defined (_STLP_NONTEMPL_BASE_MATCH_BUG)
70 template <class _InputIter, class _OutputIter, class _Distance>
71 inline _OutputIter __ucopy(_InputIter __first, _InputIter __last,
72  _OutputIter __result, const forward_iterator_tag &, _Distance* __d)
73 { return __ucopy(__first, __last, __result, __d); }
74 
75 template <class _InputIter, class _OutputIter, class _Distance>
76 inline _OutputIter __ucopy(_InputIter __first, _InputIter __last,
77  _OutputIter __result, const bidirectional_iterator_tag &, _Distance* __d)
78 { return __ucopy(__first, __last, __result, __d); }
79 #endif
80 
81 template <class _RandomAccessIter, class _OutputIter, class _Distance>
82 inline _OutputIter __ucopy(_RandomAccessIter __first, _RandomAccessIter __last,
83  _OutputIter __result, const random_access_iterator_tag &, _Distance*) {
84  _OutputIter __cur = __result;
85  _STLP_TRY {
86  for (_Distance __n = __last - __first; __n > 0; --__n) {
87  _Param_Construct(&*__cur, *__first);
88  ++__first;
89  ++__cur;
90  }
91  return __cur;
92  }
93  _STLP_UNWIND(_STLP_STD::_Destroy_Range(__result, __cur))
95 }
96 
97 //Used internaly
98 template <class _RandomAccessIter, class _OutputIter>
99 inline _OutputIter __ucopy(_RandomAccessIter __first, _RandomAccessIter __last, _OutputIter __result)
100 { return __ucopy(__first, __last, __result, random_access_iterator_tag(), (ptrdiff_t*)0); }
101 
102 inline void*
103 __ucopy_trivial(const void* __first, const void* __last, void* __result) {
104  //dums: this version can use memcpy (__copy_trivial can't)
105  return (__last == __first) ? __result :
106  ((char*)memcpy(__result, __first, ((const char*)__last - (const char*)__first))) +
107  ((const char*)__last - (const char*)__first);
108 }
109 
110 template <class _InputIter, class _OutputIter>
111 inline _OutputIter __ucopy_ptrs(_InputIter __first, _InputIter __last, _OutputIter __result,
112  const __false_type& /*TrivialUCopy*/)
113 { return __ucopy(__first, __last, __result, random_access_iterator_tag(), (ptrdiff_t*)0); }
114 
115 template <class _InputIter, class _OutputIter>
116 inline _OutputIter __ucopy_ptrs(_InputIter __first, _InputIter __last, _OutputIter __result,
117  const __true_type& /*TrivialUCopy*/) {
118  // we know they all pointers, so this cast is OK
119  // return (_OutputIter)__copy_trivial(&(*__first), &(*__last), &(*__result));
120  return (_OutputIter)__ucopy_trivial(__first, __last, __result);
121 }
122 
123 template <class _InputIter, class _OutputIter>
124 inline _OutputIter __ucopy_aux(_InputIter __first, _InputIter __last, _OutputIter __result,
125  const __true_type& /*BothPtrType*/) {
126  return __ucopy_ptrs(__first, __last, __result,
127  _UseTrivialUCopy(_STLP_VALUE_TYPE(__first, _InputIter),
128  _STLP_VALUE_TYPE(__result, _OutputIter))._Answer());
129 }
130 
131 template <class _InputIter, class _OutputIter>
132 inline _OutputIter __ucopy_aux(_InputIter __first, _InputIter __last, _OutputIter __result,
133  const __false_type& /*BothPtrType*/) {
134  return __ucopy(__first, __last, __result,
135  _STLP_ITERATOR_CATEGORY(__first, _InputIter),
136  _STLP_DISTANCE_TYPE(__first, _InputIter));
137 }
138 
140 
141 template <class _InputIter, class _ForwardIter>
142 inline _ForwardIter
143 uninitialized_copy(_InputIter __first, _InputIter __last, _ForwardIter __result)
145 
146 inline char*
147 uninitialized_copy(const char* __first, const char* __last, char* __result)
148 { return (char*)_STLP_PRIV __ucopy_trivial(__first, __last, __result); }
149 
150 # if defined (_STLP_HAS_WCHAR_T) // dwa 8/15/97
151 inline wchar_t*
152 uninitialized_copy(const wchar_t* __first, const wchar_t* __last, wchar_t* __result)
153 { return (wchar_t*)_STLP_PRIV __ucopy_trivial (__first, __last, __result); }
154 # endif
155 
156 // uninitialized_copy_n (not part of the C++ standard)
158 
159 template <class _InputIter, class _Size, class _ForwardIter>
162 __ucopy_n(_InputIter __first, _Size __count, _ForwardIter __result,
163  const input_iterator_tag &) {
164  _ForwardIter __cur = __result;
165  _STLP_TRY {
166  for ( ; __count > 0 ; --__count, ++__first, ++__cur)
167  _Param_Construct(&*__cur, *__first);
168  return pair<_InputIter, _ForwardIter>(__first, __cur);
169  }
170  _STLP_UNWIND(_STLP_STD::_Destroy_Range(__result, __cur))
172 }
173 
174 # if defined (_STLP_NONTEMPL_BASE_MATCH_BUG)
175 template <class _InputIter, class _Size, class _ForwardIterator>
177 __ucopy_n(_InputIter __first, _Size __count,
178  _ForwardIterator __result,
179  const forward_iterator_tag &)
180 { return __ucopy_n(__first, __count, __result, input_iterator_tag()); }
181 
182 template <class _InputIter, class _Size, class _ForwardIterator>
184 __ucopy_n(_InputIter __first, _Size __count,
185  _ForwardIterator __result,
187 { return __ucopy_n(__first, __count, __result, input_iterator_tag()); }
188 # endif
189 
190 template <class _RandomAccessIter, class _Size, class _ForwardIter>
192 __ucopy_n(_RandomAccessIter __first, _Size __count, _ForwardIter __result,
193  const random_access_iterator_tag &) {
194  _RandomAccessIter __last = __first + __count;
196 }
197 
198 // This is used internally in <rope> , which is extension itself.
199 template <class _InputIter, class _Size, class _ForwardIter>
201 __ucopy_n(_InputIter __first, _Size __count, _ForwardIter __result)
202 { return _STLP_PRIV __ucopy_n(__first, __count, __result, _STLP_ITERATOR_CATEGORY(__first, _InputIter)); }
203 
204 #if !defined (_STLP_NO_EXTENSIONS)
205 
207 
208 template <class _InputIter, class _Size, class _ForwardIter>
210 uninitialized_copy_n(_InputIter __first, _Size __count, _ForwardIter __result)
211 { return _STLP_PRIV __ucopy_n(__first, __count, __result); }
212 
214 
215 #endif
216 
217 template <class _ForwardIter, class _Tp, class _Distance>
218 inline void __ufill(_ForwardIter __first, _ForwardIter __last, const _Tp& __x, _Distance*) {
219  _ForwardIter __cur = __first;
220  _STLP_TRY {
221  for ( ; __cur != __last; ++__cur)
222  _Param_Construct(&*__cur, __x);
223  }
224  _STLP_UNWIND(_STLP_STD::_Destroy_Range(__first, __cur))
225 }
226 
227 template <class _ForwardIter, class _Tp, class _Distance>
228 inline void __ufill(_ForwardIter __first, _ForwardIter __last,
229  const _Tp& __x, const input_iterator_tag &, _Distance* __d)
230 { __ufill(__first, __last, __x, __d); }
231 
232 #if defined (_STLP_NONTEMPL_BASE_MATCH_BUG)
233 template <class _ForwardIter, class _Tp, class _Distance>
234 inline void __ufill(_ForwardIter __first, _ForwardIter __last,
235  const _Tp& __x, const forward_iterator_tag &, _Distance* __d)
236 { __ufill(__first, __last, __x, __d); }
237 
238 template <class _ForwardIter, class _Tp, class _Distance>
239 inline void __ufill(_ForwardIter __first, _ForwardIter __last,
240  const _Tp& __x, const bidirectional_iterator_tag &, _Distance* __d)
241 { __ufill(__first, __last, __x, __d); }
242 #endif
243 
244 template <class _ForwardIter, class _Tp, class _Distance>
245 inline void __ufill(_ForwardIter __first, _ForwardIter __last,
246  const _Tp& __x, const random_access_iterator_tag &, _Distance*) {
247  _ForwardIter __cur = __first;
248  _STLP_TRY {
249  for (_Distance __n = __last - __first; __n > 0; --__n, ++__cur)
250  _Param_Construct(&*__cur, __x);
251  }
252  _STLP_UNWIND(_STLP_STD::_Destroy_Range(__first, __cur))
253 }
254 
256 
257 template <class _ForwardIter, class _Tp>
258 inline void uninitialized_fill(_ForwardIter __first, _ForwardIter __last, const _Tp& __x) {
259  _STLP_PRIV __ufill(__first, __last, __x,
260  _STLP_ITERATOR_CATEGORY(__first, _ForwardIter),
261  _STLP_DISTANCE_TYPE(__first, _ForwardIter));
262 }
263 
264 // Specialization: for one-byte types we can use memset.
265 inline void uninitialized_fill(unsigned char* __first, unsigned char* __last,
266  const unsigned char& __val) {
267  unsigned char __tmp = __val;
268  memset(__first, __tmp, __last - __first);
269 }
270 #if !defined (_STLP_NO_SIGNED_BUILTINS)
271 inline void uninitialized_fill(signed char* __first, signed char* __last,
272  const signed char& __val) {
273  signed char __tmp = __val;
274  memset(__first, __STATIC_CAST(unsigned char,__tmp), __last - __first);
275 }
276 #endif
277 inline void uninitialized_fill(char* __first, char* __last, const char& __val) {
278  char __tmp = __val;
279  memset(__first, __STATIC_CAST(unsigned char,__tmp), __last - __first);
280 }
281 
283 
284 template <class _ForwardIter, class _Size, class _Tp>
285 inline _ForwardIter __ufill_n(_ForwardIter __first, _Size __n, const _Tp& __x) {
286  _ForwardIter __cur = __first;
287  _STLP_TRY {
288  for ( ; __n > 0; --__n, ++__cur)
289  _Param_Construct(&*__cur, __x);
290  }
291  _STLP_UNWIND(_STLP_STD::_Destroy_Range(__first, __cur))
292  return __cur;
293 }
294 
295 template <class _ForwardIter, class _Size, class _Tp>
296 inline _ForwardIter __ufill_n(_ForwardIter __first, _Size __n, const _Tp& __x,
297  const input_iterator_tag &)
298 { return __ufill_n(__first, __n, __x); }
299 
300 #if defined (_STLP_NONTEMPL_BASE_MATCH_BUG)
301 template <class _ForwardIter, class _Size, class _Tp>
302 inline _ForwardIter __ufill_n(_ForwardIter __first, _Size __n, const _Tp& __x,
303  const forward_iterator_tag &)
304 { return __ufill_n(__first, __n, __x); }
305 
306 template <class _ForwardIter, class _Size, class _Tp>
307 inline _ForwardIter __ufill_n(_ForwardIter __first, _Size __n, const _Tp& __x,
309 { return __ufill_n(__first, __n, __x); }
310 #endif
311 
312 template <class _ForwardIter, class _Size, class _Tp>
313 inline _ForwardIter __uninitialized_fill_n(_ForwardIter __first, _Size __n, const _Tp& __x) {
314  _ForwardIter __last = __first + __n;
315  __ufill(__first, __last, __x, random_access_iterator_tag(), (ptrdiff_t*)0);
316  return __last;
317 }
318 
319 template <class _ForwardIter, class _Size, class _Tp>
320 inline _ForwardIter __ufill_n(_ForwardIter __first, _Size __n, const _Tp& __x,
322 { return __uninitialized_fill_n(__first, __n, __x); }
323 
324 /* __uninitialized_init is an internal algo to init a range with a value
325  * built using default constructor. It is only called with pointer as
326  * iterator.
327  */
328 template <class _ForwardIter, class _Size, class _Tp>
329 inline _ForwardIter __uinit_aux_aux(_ForwardIter __first, _Size __n, const _Tp& __val,
330  const __false_type& /*_HasDefaultZero*/)
331 { return __uninitialized_fill_n(__first, __n, __val); }
332 
333 template <class _ForwardIter, class _Size, class _Tp>
334 inline _ForwardIter __uinit_aux_aux(_ForwardIter __first, _Size __n, const _Tp& /* __val */,
335  const __true_type& /*_HasDefaultZero*/) {
336  memset((unsigned char*)__first, 0, __n * sizeof(_Tp));
337  return __first + __n;
338 }
339 
340 template <class _ForwardIter, class _Size, class _Tp>
341 inline _ForwardIter __uinit_aux(_ForwardIter __first, _Size __n, const _Tp&,
342  const __true_type& /*_TrivialInit*/)
343 { return __first + __n; }
344 
345 template <class _ForwardIter, class _Size, class _Tp>
346 inline _ForwardIter __uinit_aux(_ForwardIter __first, _Size __n, const _Tp& __val,
347  const __false_type& /*_TrivialInit*/)
348 { return __uinit_aux_aux(__first, __n, __val, _HasDefaultZeroValue(__first)._Answer()); }
349 
350 template <class _ForwardIter, class _Size, class _Tp>
351 inline _ForwardIter __uninitialized_init(_ForwardIter __first, _Size __n, const _Tp& __val)
352 { return __uinit_aux(__first, __n, __val, _UseTrivialInit(__first)._Answer()); }
353 
355 
356 template <class _ForwardIter, class _Size, class _Tp>
357 inline void
358 uninitialized_fill_n(_ForwardIter __first, _Size __n, const _Tp& __x)
359 { _STLP_PRIV __ufill_n(__first, __n, __x, _STLP_ITERATOR_CATEGORY(__first, _ForwardIter)); }
360 
361 // Extensions: __uninitialized_copy_copy, __uninitialized_copy_fill,
362 // __uninitialized_fill_copy.
363 
364 // __uninitialized_copy_copy
365 // Copies [first1, last1) into [result, result + (last1 - first1)), and
366 // copies [first2, last2) into
367 // [result + (last1 - first1), result + (last1 - first1) + (last2 - first2)).
368 
370 
371 template <class _InputIter1, class _InputIter2, class _ForwardIter>
372 inline _ForwardIter
373 __uninitialized_copy_copy(_InputIter1 __first1, _InputIter1 __last1,
374  _InputIter2 __first2, _InputIter2 __last2,
375  _ForwardIter __result) {
376  _ForwardIter __new_result = uninitialized_copy(__first1, __last1, __result);
377  _STLP_TRY {
378  return uninitialized_copy(__first2, __last2, __new_result);
379  }
380  _STLP_UNWIND(_STLP_STD::_Destroy_Range(__result, __new_result))
381  _STLP_RET_AFTER_THROW(__result)
382 }
383 
384 // __uninitialized_fill_copy
385 // Fills [result, mid) with x, and copies [first, last) into
386 // [mid, mid + (last - first)).
387 template <class _ForwardIter, class _Tp, class _InputIter>
388 inline _ForwardIter
389 __uninitialized_fill_copy(_ForwardIter __result, _ForwardIter __mid, const _Tp& __x,
390  _InputIter __first, _InputIter __last) {
391  uninitialized_fill(__result, __mid, __x);
392  _STLP_TRY {
393  return uninitialized_copy(__first, __last, __mid);
394  }
395  _STLP_UNWIND(_STLP_STD::_Destroy_Range(__result, __mid))
396  _STLP_RET_AFTER_THROW(__result)
397 }
398 
399 // __uninitialized_copy_fill
400 // Copies [first1, last1) into [first2, first2 + (last1 - first1)), and
401 // fills [first2 + (last1 - first1), last2) with x.
402 template <class _Iter, class _Tp>
403 inline void
404 __uninitialized_copy_fill(_Iter __first1, _Iter __last1, _Iter __first2, _Iter __last2,
405  const _Tp& __x) {
406  _Iter __mid2 = uninitialized_copy(__first1, __last1, __first2);
407  _STLP_TRY {
408  uninitialized_fill(__mid2, __last2, __x);
409  }
410  _STLP_UNWIND(_STLP_STD::_Destroy_Range(__first2, __mid2))
411 }
412 
413 /* __uninitialized_move:
414  * This function is used internaly and only with pointers as iterators.
415  */
416 template <class _InputIter, class _ForwardIter, class _TrivialUCpy>
417 inline _ForwardIter
418 __uninitialized_move(_InputIter __first, _InputIter __last, _ForwardIter __result,
419  _TrivialUCpy __trivial_ucpy, const __false_type& /*_Movable*/)
420 { return __ucopy_ptrs(__first, __last, __result, __trivial_ucpy); }
421 
422 template <class _InputIter, class _ForwardIter, class _TrivialUCpy>
424 _ForwardIter
425 __uninitialized_move(_InputIter __first, _InputIter __last, _ForwardIter __result,
426  _TrivialUCpy , const __true_type& /*_Movable*/) {
427  //Move constructor should not throw so we do not need to take care of exceptions here.
428  for (ptrdiff_t __n = __last - __first ; __n > 0; --__n) {
429  _Move_Construct(&*__result, *__first);
430  ++__first; ++__result;
431  }
432  return __result;
433 }
434 
436 
438 
439 #endif /* _STLP_INTERNAL_UNINITIALIZED_H */
440 
441 // Local Variables:
442 // mode:C++
443 // End:
_ForwardIter __uinit_aux_aux(_ForwardIter __first, _Size __n, const _Tp &__val, const __false_type &)
return __n
Definition: _algo.h:75
#define random_access_iterator_tag
Definition: _abbrevs.h:28
#define __STATIC_CAST(__x, __y)
Definition: features.h:585
_DefaultZeroValueQuestion< _Tp > _HasDefaultZeroValue(_Tp *)
Definition: type_traits.h:561
_STLP_MOVE_TO_PRIV_NAMESPACE void __ufill(_ForwardIter __first, _ForwardIter __last, const _Tp &__x, _Distance *)
#define input_iterator_tag
Definition: _abbrevs.h:25
_STLP_MOVE_TO_STD_NAMESPACE pair< _InputIter, _ForwardIter > uninitialized_copy_n(_InputIter __first, _Size __count, _ForwardIter __result)
#define _STLP_ITERATOR_CATEGORY(_It, _Tp)
_ForwardIter __uninitialized_move(_InputIter __first, _InputIter __last, _ForwardIter __result, _TrivialUCpy __trivial_ucpy, const __false_type &)
#define _STLP_RET_AFTER_THROW(data)
Definition: features.h:829
#define _STLP_MOVE_TO_PRIV_NAMESPACE
Definition: features.h:524
void __uninitialized_copy_fill(_Iter __first1, _Iter __last1, _Iter __first2, _Iter __last2, const _Tp &__x)
_TrivialUCopy< _Src, _Dst > _UseTrivialUCopy(_Src *, _Dst *)
Definition: type_traits.h:505
_OutputIter __ucopy_aux(_InputIter __first, _InputIter __last, _OutputIter __result, const __true_type &)
#define _STLP_UNWIND(action)
Definition: features.h:824
_ForwardIter __uninitialized_fill_copy(_ForwardIter __result, _ForwardIter __mid, const _Tp &__x, _InputIter __first, _InputIter __last)
_STLP_MOVE_TO_PRIV_NAMESPACE _STLP_INLINE_LOOP pair< _InputIter, _ForwardIter > __ucopy_n(_InputIter __first, _Size __count, _ForwardIter __result, const input_iterator_tag &)
_STLP_INLINE_LOOP _InputIter __last
Definition: _algo.h:68
_STLP_MOVE_TO_STD_NAMESPACE _ForwardIter uninitialized_copy(_InputIter __first, _InputIter __last, _ForwardIter __result)
#define _STLP_MOVE_TO_STD_NAMESPACE
Definition: features.h:525
_STLP_INLINE_LOOP _InputIter const _Tp & __val
Definition: _algobase.h:656
#define _STLP_INLINE_LOOP
Definition: features.h:648
#define _STLP_VALUE_TYPE(_It, _Tp)
_STLP_BEGIN_NAMESPACE _STLP_MOVE_TO_PRIV_NAMESPACE _OutputIter __ucopy(_InputIter __first, _InputIter __last, _OutputIter __result, _Distance *)
#define _STLP_PRIV
Definition: _dm.h:70
#define memcpy(s1, s2, n)
Definition: mkisofs.h:878
_STLP_MOVE_TO_STD_NAMESPACE void uninitialized_fill_n(_ForwardIter __first, _Size __n, const _Tp &__x)
_STLP_MOVE_TO_PRIV_NAMESPACE _ForwardIter __ufill_n(_ForwardIter __first, _Size __n, const _Tp &__x)
void _Destroy_Range(_ForwardIterator __first, _ForwardIterator __last)
Definition: _construct.h:219
_TrivialInit< _Tp > _UseTrivialInit(_Tp *)
Definition: type_traits.h:541
#define _STLP_END_NAMESPACE
Definition: features.h:503
#define _STLP_TRY
Definition: features.h:817
_ForwardIter __uninitialized_init(_ForwardIter __first, _Size __n, const _Tp &__val)
Definition: _pair.h:47
__kernel_ptrdiff_t ptrdiff_t
Definition: linux.h:247
_STLP_MOVE_TO_PRIV_NAMESPACE _ForwardIter __uninitialized_copy_copy(_InputIter1 __first1, _InputIter1 __last1, _InputIter2 __first2, _InputIter2 __last2, _ForwardIter __result)
_ForwardIter __uinit_aux(_ForwardIter __first, _Size __n, const _Tp &, const __true_type &)
_STLP_MOVE_TO_STD_NAMESPACE void uninitialized_fill(_ForwardIter __first, _ForwardIter __last, const _Tp &__x)
_Check_return_ _Ret_maybenull_ _In_ size_t _In_ size_t _Size
Definition: malloc.h:112
void * __ucopy_trivial(const void *__first, const void *__last, void *__result)
#define _STLP_BEGIN_NAMESPACE
Definition: features.h:501
_ForwardIter __uninitialized_fill_n(_ForwardIter __first, _Size __n, const _Tp &__x)
#define _STLP_DISTANCE_TYPE(_It, _Tp)
_OutputIter __ucopy_ptrs(_InputIter __first, _InputIter __last, _OutputIter __result, const __false_type &)
#define memset(x, y, z)
Definition: compat.h:39
void _Move_Construct(_T1 *__p, _T2 &__val)
Definition: _construct.h:174
void _Param_Construct(_T1 *__p, const _T2 &__val)
Definition: _construct.h:150