1 | #ifndef ESTL_H |
1 | #ifndef ESTL_H_ |
2 | #define ESTL_H |
2 | #define ESTL_H_ |
3 | |
3 | |
4 | #include <stdlib.h> |
4 | #include <stdlib.h> |
5 | #include <string.h> |
5 | #include <string.h> |
6 | |
6 | |
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7 | #include "ecb.h" |
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8 | |
7 | template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; } |
9 | template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; } |
8 | template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } |
10 | template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } |
9 | |
11 | |
10 | template<typename T, typename U> static inline void swap (T& a, U& b) { T t = a; a = (T)b; b = (U)t; } |
12 | template<typename T, typename U> static inline void swap (T& a, U& b) { T t = a; a = (T)b; b = (U)t; } |
11 | |
13 | |
12 | template <typename I, typename T> |
14 | template <typename I, typename T> |
13 | I find (I first, I last, const T& value) |
15 | I find (I first, I last, const T& value) |
… | |
… | |
16 | ++first; |
18 | ++first; |
17 | |
19 | |
18 | return first; |
20 | return first; |
19 | } |
21 | } |
20 | |
22 | |
21 | /* simplevec taken (and heavily modified), from: |
23 | #include <new> |
22 | * |
24 | |
23 | * MICO --- a free CORBA implementation |
25 | #if __cplusplus >= 201103L |
24 | * Copyright (C) 1997-98 Kay Roemer & Arno Puder |
26 | #include <type_traits> |
25 | * originally GPLv2 or any later |
27 | #endif |
26 | */ |
28 | |
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29 | // original version taken from MICO, but this has been completely rewritten |
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30 | // known limitations w.r.t. std::vector |
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31 | // - many methods missing |
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32 | // - no error checking, no exceptions thrown (e.g. at()) |
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33 | // - size_type is 32bit even on 64 bit hosts, so limited to 2**31 elements |
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34 | // - no allocator support |
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35 | // - we don't really care about const correctness, but we try |
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36 | // - we don't care about namespaces and stupid macros the user might define |
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37 | // - no bool specialisation |
27 | template<class T> |
38 | template<class T> |
28 | struct simplevec |
39 | struct simplevec |
29 | { |
40 | { |
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41 | #if ESTL_BIG_VECTOR |
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42 | // shoudl use size_t/ssize_t, but that's not portable enough for us |
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43 | typedef unsigned long size_type; |
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44 | typedef long difference_type; |
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45 | #else |
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46 | typedef uint32_t size_type; |
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47 | typedef int32_t difference_type; |
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48 | #endif |
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49 | |
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50 | typedef T value_type; |
30 | typedef T *iterator; |
51 | typedef T *iterator; |
31 | typedef const T *const_iterator; |
52 | typedef const T *const_iterator; |
32 | typedef unsigned long size_type; |
53 | typedef T *pointer; |
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54 | typedef const T *const_pointer; |
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55 | typedef T &reference; |
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56 | typedef const T &const_reference; |
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57 | // missing: allocator_type |
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58 | // missing: reverse iterator |
33 | |
59 | |
34 | private: |
60 | private: |
35 | size_type _last, _size; |
61 | size_type sze, res; |
36 | T *_buf; |
62 | T *buf; |
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63 | |
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64 | // we shamelessly optimise for "simple" types. everything |
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65 | // "not simple enough" will use the slow path. |
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66 | static bool is_simple_enough () |
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67 | { |
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68 | #if __cplusplus >= 201103L |
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69 | return std::is_trivially_assignable<T, T>::value |
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70 | && std::is_trivially_constructable<T>::value |
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71 | && std::is_trivially_copyable<T>::value |
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72 | && std::is_trivially_destructible<T>::value; |
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73 | #elif ECB_GCC_VERSION(4,4) |
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74 | return __has_trivial_assign (T) |
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75 | && __has_trivial_constructor (T) |
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76 | && __has_trivial_copy (T) |
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77 | && __has_trivial_destructor (T); |
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78 | #else |
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79 | return 0; |
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80 | #endif |
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81 | } |
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82 | |
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83 | static void construct (iterator a, size_type n = 1) |
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84 | { |
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85 | if (!is_simple_enough ()) |
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86 | while (n--) |
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87 | new (a++) T (); |
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88 | } |
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89 | |
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90 | static void destruct (iterator a, size_type n = 1) |
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91 | { |
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92 | if (!is_simple_enough ()) |
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93 | while (n--) |
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94 | (*a++).~T (); |
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95 | } |
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96 | |
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97 | template<class I> |
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98 | static void cop_new (iterator a, I b) { new (a) T (*b); } |
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99 | template<class I> |
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100 | static void cop_set (iterator a, I b) { *a = *b ; } |
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101 | |
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102 | // MUST copy forwards |
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103 | template<class I> |
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104 | static void copy (iterator dst, I src, size_type n, void (*op)(iterator, I)) |
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105 | { |
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106 | while (n--) |
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107 | op (dst++, src++); |
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108 | } |
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109 | |
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110 | static void copy (iterator dst, iterator src, size_type n, void (*op)(iterator, iterator)) |
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111 | { |
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112 | if (is_simple_enough ()) |
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113 | memcpy (dst, src, sizeof (T) * n); |
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114 | else |
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115 | copy<iterator> (dst, src, n, op); |
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116 | } |
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117 | |
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118 | static T *alloc (size_type n) ecb_cold |
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119 | { |
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120 | return (T *)::operator new ((size_t) (sizeof (T) * n)); |
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121 | } |
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122 | |
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123 | void dealloc () ecb_cold |
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124 | { |
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125 | destruct (buf, sze); |
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126 | ::operator delete (buf); |
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127 | } |
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128 | |
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129 | size_type good_size (size_type n) ecb_cold |
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130 | { |
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131 | return n ? 2UL << ecb_ld32 (n) : 5; |
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132 | } |
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133 | |
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134 | void ins (iterator where, size_type n) |
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135 | { |
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136 | size_type pos = where - begin (); |
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137 | |
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138 | if (ecb_expect_false (sze + n > res)) |
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139 | { |
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140 | res = good_size (sze + n); |
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141 | |
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142 | T *nbuf = alloc (res); |
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143 | copy (nbuf, buf, sze, cop_new); |
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144 | dealloc (); |
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145 | buf = nbuf; |
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146 | } |
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147 | |
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148 | construct (buf + sze, n); |
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149 | |
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150 | sze += n; |
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151 | |
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152 | iterator src = buf + pos; |
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153 | if (is_simple_enough ()) |
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154 | memmove (src + n, src, sizeof (T) * n); |
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155 | else |
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156 | for (size_type i = n; i--; ) |
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157 | cop_set (src + n + i, src + i); |
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158 | } |
37 | |
159 | |
38 | public: |
160 | public: |
39 | const_iterator begin () const { return &_buf[0]; } |
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40 | iterator begin () { return &_buf[0]; } |
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41 | |
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42 | const_iterator end () const { return &_buf[_last]; } |
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43 | iterator end () { return &_buf[_last]; } |
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44 | |
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45 | size_type capacity () const { return _size; } |
161 | size_type capacity () const { return res; } |
46 | size_type size () const { return _last; } |
162 | size_type size () const { return sze; } |
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163 | bool empty () const { return size () == 0; } |
47 | |
164 | |
48 | private: |
165 | size_t max_size () const |
49 | static T *alloc (size_type n) |
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50 | { |
166 | { |
51 | return (T *)::operator new ((size_t) (n * sizeof (T))); |
167 | return (~(size_type)0) >> 1; |
52 | } |
168 | } |
53 | |
169 | |
54 | static void dealloc (T *buf) |
170 | const_iterator begin () const { return &buf [ 0]; } |
55 | { |
171 | iterator begin () { return &buf [ 0]; } |
56 | if (buf) |
172 | const_iterator end () const { return &buf [sze ]; } |
57 | ::operator delete (buf); |
173 | iterator end () { return &buf [sze ]; } |
58 | } |
174 | const_reference front () const { return buf [ 0]; } |
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175 | reference front () { return buf [ 0]; } |
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176 | const_reference back () const { return buf [sze - 1]; } |
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177 | reference back () { return buf [sze - 1]; } |
59 | |
178 | |
60 | size_type good_size (size_type n) |
179 | void reserve (size_type sz) |
61 | { |
180 | { |
62 | return max (n, _size ? _size * 2 : 5); |
181 | if (ecb_expect_true (sz <= res)) |
63 | } |
182 | return; |
64 | |
183 | |
65 | void reserve (iterator where, size_type n) |
184 | sz = good_size (sz); |
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185 | T *nbuf = alloc (sz); |
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186 | |
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187 | copy (nbuf, begin (), sze, cop_new); |
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188 | dealloc (); |
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189 | |
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190 | buf = nbuf; |
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191 | res = sz; |
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192 | } |
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193 | |
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194 | void resize (size_type sz) |
66 | { |
195 | { |
67 | if (_last + n <= _size) |
196 | reserve (sz); |
68 | memmove (where + n, where, (end () - where) * sizeof (T)); |
197 | |
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198 | if (is_simple_enough ()) |
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199 | sze = sz; |
69 | else |
200 | else |
70 | { |
201 | { |
71 | size_type sz = _last + n; |
202 | while (sze < sz) construct (buf + sze++); |
72 | sz = good_size (sz); |
203 | while (sze > sz) destruct (buf + --sze); |
73 | T *nbuf = alloc (sz); |
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74 | |
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75 | if (_buf) |
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76 | { |
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77 | memcpy (nbuf, begin (), (where - begin ()) * sizeof (T)); |
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78 | memcpy (nbuf + (where - begin ()) + n, where, (end () - where) * sizeof (T)); |
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79 | dealloc (_buf); |
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80 | } |
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81 | |
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82 | _buf = nbuf; |
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83 | _size = sz; |
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84 | } |
204 | } |
85 | } |
205 | } |
86 | |
206 | |
87 | public: |
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88 | void reserve (size_type sz) |
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89 | { |
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90 | if (_size < sz) |
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91 | { |
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92 | sz = good_size (sz); |
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93 | T *nbuf = alloc (sz); |
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94 | |
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95 | if (_buf) |
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96 | { |
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97 | memcpy (nbuf, begin (), size () * sizeof (T)); |
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98 | dealloc (_buf); |
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99 | } |
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100 | |
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101 | _buf = nbuf; |
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102 | _size = sz; |
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103 | } |
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104 | } |
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105 | |
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106 | simplevec () |
207 | simplevec () |
107 | : _last(0), _size(0), _buf(0) |
208 | : sze(0), res(0), buf(0) |
108 | { |
209 | { |
109 | } |
210 | } |
110 | |
211 | |
111 | simplevec (size_type n, const T& t = T ()) |
212 | simplevec (size_type n, const T &t = T ()) |
112 | : _last(0), _size(0), _buf(0) |
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113 | { |
213 | { |
114 | insert (begin (), n, t); |
214 | sze = res = n; |
115 | } |
215 | buf = alloc (sze); |
116 | |
216 | |
117 | simplevec (const_iterator first, const_iterator last) |
217 | while (n--) |
118 | : _last(0), _size(0), _buf(0) |
218 | new (buf + n) T (t); |
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219 | } |
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220 | |
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221 | template<class I> |
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222 | simplevec (I first, I last) |
119 | { |
223 | { |
120 | insert (begin (), first, last); |
224 | sze = res = last - first; |
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225 | buf = alloc (sze); |
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226 | copy (buf, first, sze, cop_new); |
121 | } |
227 | } |
122 | |
228 | |
123 | simplevec (const simplevec<T> &v) |
229 | simplevec (const simplevec<T> &v) |
124 | : _last(0), _size(0), _buf(0) |
230 | : sze(0), res(0), buf(0) |
125 | { |
231 | { |
126 | reserve (v._last); |
232 | sze = res = v.size (); |
127 | memcpy (_buf, v.begin (), v.size () * sizeof (T)); |
233 | buf = alloc (sze); |
128 | _last = v._last; |
234 | copy (buf, v.begin (), sze, cop_new); |
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235 | } |
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236 | |
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237 | ~simplevec () |
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238 | { |
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239 | dealloc (); |
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240 | } |
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241 | |
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242 | void swap (simplevec<T> &t) |
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243 | { |
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244 | ::swap (sze, t.sze); |
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245 | ::swap (res, t.res); |
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246 | ::swap (buf, t.buf); |
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247 | } |
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248 | |
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249 | void clear () |
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250 | { |
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251 | destruct (buf, sze); |
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252 | sze = 0; |
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253 | } |
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254 | |
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255 | void push_back (const T &t) |
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256 | { |
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257 | reserve (sze + 1); |
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258 | new (buf + sze++) T (t); |
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259 | } |
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260 | |
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261 | void pop_back () |
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262 | { |
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263 | destruct (buf + --sze); |
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264 | } |
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265 | |
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266 | const_reference operator [](size_type idx) const { return buf[idx]; } |
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267 | reference operator [](size_type idx) { return buf[idx]; } |
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268 | |
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269 | const_reference at (size_type idx) const { return buf [idx]; } |
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270 | reference at (size_type idx) { return buf [idx]; } |
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271 | |
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272 | template<class I> |
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273 | void assign (I first, I last) |
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274 | { |
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275 | swap (simplevec<T> (first, last)); |
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276 | } |
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277 | |
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278 | void assign (size_type n, const T &t) |
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279 | { |
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280 | swap (simplevec<T> (n, t)); |
129 | } |
281 | } |
130 | |
282 | |
131 | simplevec<T> &operator= (const simplevec<T> &v) |
283 | simplevec<T> &operator= (const simplevec<T> &v) |
132 | { |
284 | { |
133 | if (this != &v) |
285 | assign (v.begin (), v.end ()); |
134 | { |
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135 | _last = 0; |
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136 | reserve (v._last); |
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137 | memcpy (_buf, v.begin (), v.size () * sizeof (T)); |
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138 | _last = v._last; |
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139 | } |
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140 | |
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141 | return *this; |
286 | return *this; |
142 | } |
287 | } |
143 | |
288 | |
144 | ~simplevec () |
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145 | { |
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146 | dealloc (_buf); |
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147 | } |
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148 | |
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149 | const T &front () const { return _buf[ 0]; } |
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150 | T &front () { return _buf[ 0]; } |
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151 | const T &back () const { return _buf[_last-1]; } |
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152 | T &back () { return _buf[_last-1]; } |
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153 | |
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154 | bool empty () const |
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155 | { |
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156 | return _last == 0; |
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157 | } |
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158 | |
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159 | void clear () |
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160 | { |
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161 | _last = 0; |
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162 | } |
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163 | |
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164 | void push_back (const T &t) |
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165 | { |
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166 | reserve (_last+1); |
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167 | *end () = t; |
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168 | ++_last; |
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169 | } |
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170 | |
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171 | void push_back (T &t) |
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172 | { |
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173 | reserve (_last+1); |
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174 | *end () = t; |
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175 | ++_last; |
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176 | } |
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177 | |
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178 | void pop_back () |
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179 | { |
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180 | --_last; |
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181 | } |
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182 | |
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183 | const T &operator [](size_type idx) const { return _buf[idx]; } |
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184 | T &operator [](size_type idx) { return _buf[idx]; } |
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185 | |
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186 | iterator insert (iterator pos, const T &t) |
289 | iterator insert (iterator pos, const T &t) |
187 | { |
290 | { |
188 | long at = pos - begin (); |
291 | size_type at = pos - begin (); |
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292 | |
189 | reserve (pos, 1); |
293 | ins (pos, 1); |
190 | pos = begin () + at; |
294 | buf [at] = t; |
191 | *pos = t; |
295 | |
192 | ++_last; |
296 | return buf + at; |
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297 | } |
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298 | |
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299 | template<class I> |
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300 | iterator insert (iterator pos, I first, I last) |
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301 | { |
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302 | size_type n = last - first; |
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303 | size_type at = pos - begin (); |
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304 | |
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305 | ins (pos, n); |
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306 | copy (buf + at, first, n, cop_set); |
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307 | |
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308 | return buf + at; |
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309 | } |
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310 | |
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311 | iterator insert (iterator pos, size_type n, const T &t) |
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312 | { |
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313 | size_type at = pos - begin (); |
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314 | |
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315 | ins (pos, n); |
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316 | |
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317 | for (iterator i = buf + at; n--; ) |
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318 | *i++ = t; |
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319 | |
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320 | return buf + at; |
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321 | } |
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322 | |
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323 | iterator erase (iterator first, iterator last) |
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324 | { |
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325 | size_type n = last - first; |
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326 | size_type c = end () - last; |
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327 | |
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328 | if (is_simple_enough ()) |
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329 | memmove (first, last, sizeof (T) * c); |
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330 | else |
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331 | copy<iterator> (first, last, c, cop_set); |
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332 | |
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333 | sze -= n; |
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334 | destruct (buf + sze, n); |
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335 | |
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336 | return first; |
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337 | } |
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338 | |
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339 | iterator erase (iterator pos) |
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340 | { |
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341 | if (pos != end ()) |
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342 | erase (pos, pos + 1); |
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343 | |
193 | return pos; |
344 | return pos; |
194 | } |
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195 | |
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196 | iterator insert (iterator pos, const_iterator first, const_iterator last) |
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197 | { |
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198 | long n = last - first; |
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199 | long at = pos - begin (); |
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200 | |
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201 | if (n > 0) |
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202 | { |
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203 | reserve (pos, n); |
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204 | pos = begin ()+at; |
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205 | memcpy (pos, first, (last - first) * sizeof (T)); |
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206 | _last += n; |
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207 | } |
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208 | |
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209 | return pos; |
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210 | } |
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211 | |
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212 | iterator insert (iterator pos, size_type n, const T &t) |
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213 | { |
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214 | long at = pos - begin (); |
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215 | |
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216 | if (n > 0) |
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217 | { |
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218 | reserve (pos, n); |
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219 | pos = begin () + at; |
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220 | for (int i = 0; i < n; ++i) |
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221 | pos[i] = t; |
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222 | _last += n; |
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223 | } |
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224 | |
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225 | return pos; |
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226 | } |
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227 | |
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228 | void erase (iterator first, iterator last) |
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229 | { |
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230 | if (last != first) |
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231 | { |
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232 | memmove (first, last, (end () - last) * sizeof (T)); |
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233 | _last -= last - first; |
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234 | } |
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235 | } |
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236 | |
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237 | void erase (iterator pos) |
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238 | { |
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239 | if (pos != end ()) |
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240 | { |
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241 | memmove (pos, pos + 1, (end () - (pos + 1)) * sizeof (T)); |
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242 | --_last; |
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243 | } |
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244 | } |
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245 | |
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246 | void swap (simplevec<T> &t) |
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247 | { |
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248 | ::swap(_last, t._last); |
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249 | ::swap(_size, t._size); |
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250 | ::swap(_buf, t._buf); |
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251 | } |
345 | } |
252 | }; |
346 | }; |
253 | |
347 | |
254 | template<class T> |
348 | template<class T> |
255 | bool operator ==(const simplevec<T> &v1, const simplevec<T> &v2) |
349 | bool operator ==(const simplevec<T> &v1, const simplevec<T> &v2) |