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) |
14 | { |
16 | { |
15 | while (first != last && *first != value) |
17 | while (first != last && *first != 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 ECB_CPP11 |
24 | * Copyright (C) 1997-98 Kay Roemer & Arno Puder |
26 | #include <type_traits> |
25 | */ |
27 | #endif |
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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 |
26 | template<class T> |
38 | template<class T> |
27 | struct simplevec |
39 | struct simplevec |
28 | { |
40 | { |
29 | typedef T* iterator; |
41 | #if ESTL_BIG_VECTOR |
30 | typedef const T* const_iterator; |
42 | // shoudl use size_t/ssize_t, but that's not portable enough for us |
31 | typedef unsigned long size_type; |
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; |
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51 | typedef T *iterator; |
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52 | typedef const T *const_iterator; |
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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 |
32 | |
59 | |
33 | private: |
60 | private: |
34 | size_type _last, _size; |
61 | size_type sze, res; |
35 | 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 ECB_CPP11 |
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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 | } |
36 | |
159 | |
37 | public: |
160 | public: |
38 | const_iterator begin () const |
161 | size_type capacity () const { return res; } |
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162 | size_type size () const { return sze; } |
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163 | bool empty () const { return size () == 0; } |
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164 | |
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165 | size_t max_size () const |
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166 | { |
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167 | return (~(size_type)0) >> 1; |
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168 | } |
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169 | |
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170 | const_iterator begin () const { return &buf [ 0]; } |
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171 | iterator begin () { return &buf [ 0]; } |
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172 | const_iterator end () const { return &buf [sze ]; } |
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173 | iterator end () { return &buf [sze ]; } |
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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]; } |
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178 | |
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179 | void reserve (size_type sz) |
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180 | { |
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181 | if (ecb_expect_true (sz <= res)) |
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182 | return; |
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183 | |
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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) |
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195 | { |
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196 | reserve (sz); |
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197 | |
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198 | if (is_simple_enough ()) |
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199 | sze = sz; |
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200 | else |
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201 | { |
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202 | while (sze < sz) construct (buf + sze++); |
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203 | while (sze > sz) destruct (buf + --sze); |
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204 | } |
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205 | } |
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206 | |
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207 | simplevec () |
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208 | : sze(0), res(0), buf(0) |
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209 | { |
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210 | } |
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211 | |
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212 | simplevec (size_type n, const T &t = T ()) |
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213 | { |
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214 | sze = res = n; |
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215 | buf = alloc (sze); |
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216 | |
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217 | while (n--) |
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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) |
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223 | { |
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224 | sze = res = last - first; |
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225 | buf = alloc (sze); |
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226 | copy (buf, first, sze, cop_new); |
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227 | } |
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228 | |
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229 | simplevec (const simplevec<T> &v) |
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230 | : sze(0), res(0), buf(0) |
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231 | { |
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232 | sze = res = v.size (); |
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233 | buf = alloc (sze); |
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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)); |
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281 | } |
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282 | |
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283 | simplevec<T> &operator= (const simplevec<T> &v) |
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284 | { |
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285 | assign (v.begin (), v.end ()); |
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286 | return *this; |
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287 | } |
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288 | |
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289 | iterator insert (iterator pos, const T &t) |
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290 | { |
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291 | size_type at = pos - begin (); |
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292 | |
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293 | ins (pos, 1); |
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294 | buf [at] = t; |
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295 | |
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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 | |
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344 | return pos; |
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345 | } |
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346 | }; |
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347 | |
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348 | template<class T> |
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349 | bool operator ==(const simplevec<T> &v1, const simplevec<T> &v2) |
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350 | { |
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351 | if (v1.size () != v2.size ()) return false; |
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352 | |
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353 | return !v1.size () || !memcmp (&v1[0], &v2[0], v1.size () * sizeof (T)); |
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354 | } |
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355 | |
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356 | template<class T> |
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357 | bool operator <(const simplevec<T> &v1, const simplevec<T> &v2) |
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358 | { |
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359 | unsigned long minlast = min (v1.size (), v2.size ()); |
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360 | |
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361 | for (unsigned long i = 0; i < minlast; ++i) |
39 | { |
362 | { |
40 | return &_buf[0]; |
363 | if (v1[i] < v2[i]) return true; |
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364 | if (v2[i] < v1[i]) return false; |
41 | } |
365 | } |
42 | iterator begin () |
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43 | { |
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44 | return &_buf[0]; |
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45 | } |
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46 | const_iterator end () const |
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47 | { |
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48 | return &_buf[_last]; |
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49 | } |
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50 | iterator end () |
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51 | { |
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52 | return &_buf[_last]; |
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53 | } |
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54 | size_type capacity () const |
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55 | { |
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56 | return _size; |
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57 | } |
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58 | size_type size () const |
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59 | { |
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60 | return _last; |
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61 | } |
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62 | |
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63 | private: |
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64 | static T *alloc (size_type n) |
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65 | { |
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66 | return (T *)::operator new ((size_t) (n * sizeof (T))); |
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67 | } |
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68 | static void dealloc (T *buf) |
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69 | { |
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70 | if (buf) |
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71 | ::operator delete (buf); |
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72 | } |
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73 | |
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74 | void reserve (iterator where, size_type n) |
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75 | { |
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76 | if (_last + n <= _size) { |
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77 | memmove (where+n, where, (end ()-where)*sizeof (T)); |
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78 | } else { |
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79 | size_type sz = _last+n; |
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80 | sz = (_size == 0) ? max (sz, 5) : max (sz, 2*_size); |
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81 | T *nbuf = alloc (sz); |
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82 | if (_buf) { |
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83 | memcpy (nbuf, begin (), (where-begin ())*sizeof (T)); |
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84 | memcpy (nbuf + (where-begin ()) + n, where, |
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85 | (end ()-where)*sizeof (T)); |
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86 | dealloc (_buf); |
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87 | } |
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88 | _buf = nbuf; |
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89 | _size = sz; |
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90 | } |
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91 | } |
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92 | |
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93 | public: |
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94 | void reserve (size_type sz) |
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95 | { |
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96 | if (_size < sz) { |
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97 | sz = (_size == 0) ? max (sz, 5) : max (sz, 2*_size); |
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98 | T *nbuf = alloc (sz); |
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99 | if (_buf) { |
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100 | memcpy (nbuf, begin (), size ()*sizeof (T)); |
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101 | dealloc (_buf); |
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102 | } |
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103 | _buf = nbuf; |
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104 | _size = sz; |
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105 | } |
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106 | } |
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107 | simplevec () |
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108 | : _last(0), _size(0), _buf(0) |
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109 | { |
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110 | } |
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111 | simplevec (size_type n, const T& t = T ()) |
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112 | : _last(0), _size(0), _buf(0) |
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113 | { |
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114 | insert (begin (), n, t); |
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115 | } |
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116 | simplevec (const_iterator first, const_iterator last) |
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117 | : _last(0), _size(0), _buf(0) |
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118 | { |
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119 | insert (begin (), first, last); |
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120 | } |
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121 | simplevec (const simplevec<T> &v) |
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122 | : _last(0), _size(0), _buf(0) |
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123 | { |
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124 | reserve (v._last); |
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125 | memcpy (_buf, v.begin (), v.size ()*sizeof (T)); |
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126 | _last = v._last; |
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127 | } |
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128 | simplevec<T> &operator= (const simplevec<T> &v) |
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129 | { |
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130 | if (this != &v) { |
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131 | _last = 0; |
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132 | reserve (v._last); |
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133 | memcpy (_buf, v.begin (), v.size ()*sizeof (T)); |
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134 | _last = v._last; |
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135 | } |
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136 | return *this; |
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137 | } |
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138 | ~simplevec () |
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139 | { |
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140 | dealloc (_buf); |
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141 | } |
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142 | const T &front () const |
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143 | { |
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144 | //ministl_assert (size () > 0); |
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145 | return _buf[0]; |
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146 | } |
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147 | T &front () |
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148 | { |
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149 | //ministl_assert (size () > 0); |
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150 | return _buf[0]; |
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151 | } |
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152 | const T &back () const |
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153 | { |
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154 | //ministl_assert (size () > 0); |
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155 | return _buf[_last-1]; |
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156 | } |
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157 | T &back () |
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158 | { |
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159 | //ministl_assert (size () > 0); |
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160 | return _buf[_last-1]; |
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161 | } |
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162 | bool empty () const |
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163 | { |
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164 | return _last == 0; |
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165 | } |
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166 | void clear () |
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167 | { |
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168 | _last = 0; |
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169 | } |
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170 | void push_back (const T &t) |
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171 | { |
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172 | reserve (_last+1); |
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173 | *end () = t; |
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174 | ++_last; |
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175 | } |
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176 | void push_back (T &t) |
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177 | { |
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178 | reserve (_last+1); |
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179 | *end () = t; |
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180 | ++_last; |
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181 | } |
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182 | void pop_back () |
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183 | { |
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184 | //ministl_assert (size () > 0); |
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185 | --_last; |
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186 | } |
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187 | const T &operator[] (size_type idx) const |
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188 | { |
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189 | //ministl_assert (idx < size ()); |
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190 | return _buf[idx]; |
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191 | } |
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192 | T &operator[] (size_type idx) |
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193 | { |
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194 | //ministl_assert (idx < size ()); |
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195 | return _buf[idx]; |
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196 | } |
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197 | iterator insert (iterator pos, const T &t) |
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198 | { |
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199 | //ministl_assert (pos <= end ()); |
|
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200 | long at = pos - begin (); |
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201 | reserve (pos, 1); |
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202 | pos = begin ()+at; |
|
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203 | *pos = t; |
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204 | ++_last; |
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205 | return pos; |
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206 | } |
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207 | iterator insert (iterator pos, const_iterator first, const_iterator last) |
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208 | { |
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|
209 | //ministl_assert (pos <= end ()); |
|
|
210 | long n = last - first; |
|
|
211 | long at = pos - begin (); |
|
|
212 | if (n > 0) { |
|
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213 | reserve (pos, n); |
|
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214 | pos = begin ()+at; |
|
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215 | memcpy (pos, first, (last-first)*sizeof (T)); |
|
|
216 | _last += n; |
|
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217 | } |
|
|
218 | return pos; |
|
|
219 | } |
|
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220 | iterator insert (iterator pos, size_type n, const T &t) |
|
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221 | { |
|
|
222 | //ministl_assert (pos <= end ()); |
|
|
223 | long at = pos - begin (); |
|
|
224 | if (n > 0) { |
|
|
225 | reserve (pos, n); |
|
|
226 | pos = begin ()+at; |
|
|
227 | for (int i = 0; i < n; ++i) |
|
|
228 | pos[i] = t; |
|
|
229 | _last += n; |
|
|
230 | } |
|
|
231 | return pos; |
|
|
232 | } |
|
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233 | void erase (iterator first, iterator last) |
|
|
234 | { |
|
|
235 | if (last != first) { |
|
|
236 | memmove (first, last, (end () - last) * sizeof (T)); |
|
|
237 | _last -= last - first; |
|
|
238 | } |
|
|
239 | } |
|
|
240 | void erase (iterator pos) |
|
|
241 | { |
|
|
242 | if (pos != end ()) { |
|
|
243 | memmove (pos, pos+1, (end () - (pos+1)) * sizeof (T)); |
|
|
244 | --_last; |
|
|
245 | } |
|
|
246 | } |
|
|
247 | void swap (simplevec<T> &t) |
|
|
248 | { |
|
|
249 | ::swap(_last, t._last); |
|
|
250 | ::swap(_size, t._size); |
|
|
251 | ::swap(_buf, t._buf); |
|
|
252 | } |
|
|
253 | }; |
|
|
254 | |
|
|
255 | template<class T> |
|
|
256 | bool operator== (const simplevec<T> &v1, const simplevec<T> &v2) |
|
|
257 | { |
|
|
258 | if (v1.size () != v2.size ()) |
|
|
259 | return false; |
|
|
260 | return !v1.size () || !memcmp (&v1[0], &v2[0], v1.size ()*sizeof (T)); |
|
|
261 | } |
|
|
262 | |
|
|
263 | template<class T> |
|
|
264 | bool operator< (const simplevec<T> &v1, const simplevec<T> &v2) |
|
|
265 | { |
|
|
266 | unsigned long minlast = min (v1.size (), v2.size ()); |
|
|
267 | for (unsigned long i = 0; i < minlast; ++i) { |
|
|
268 | if (v1[i] < v2[i]) |
|
|
269 | return true; |
|
|
270 | if (v2[i] < v1[i]) |
|
|
271 | return false; |
|
|
272 | } |
|
|
273 | return v1.size () < v2.size (); |
366 | return v1.size () < v2.size (); |
274 | } |
367 | } |
275 | |
368 | |
276 | template<typename T> |
369 | template<typename T> |
277 | struct vector : simplevec<T> |
370 | struct vector : simplevec<T> |
278 | { |
371 | { |
279 | }; |
372 | }; |
280 | |
373 | |
281 | #endif |
374 | #endif |
|
|
375 | |