1 | // file : xsd/cxx/tree/buffer.txx |
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2 | // author : Boris Kolpackov <boris@codesynthesis.com> |
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3 | // copyright : Copyright (c) 2005-2008 Code Synthesis Tools CC |
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4 | // license : GNU GPL v2 + exceptions; see accompanying LICENSE file |
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5 | |
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6 | namespace xsd |
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7 | { |
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8 | namespace cxx |
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9 | { |
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10 | namespace tree |
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11 | { |
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12 | template <typename C> |
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13 | buffer<C>:: |
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14 | buffer (size_t size) |
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15 | { |
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16 | capacity (size); |
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17 | size_ = size; |
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18 | } |
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19 | |
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20 | template <typename C> |
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21 | buffer<C>:: |
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22 | buffer (size_t size, size_t capacity) |
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23 | { |
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24 | if (size > capacity) |
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25 | throw bounds<C> (); |
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26 | |
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27 | this->capacity (capacity); |
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28 | size_ = size; |
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29 | } |
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30 | |
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31 | template <typename C> |
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32 | buffer<C>:: |
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33 | buffer (const void* data, size_t size) |
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34 | { |
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35 | capacity (size); |
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36 | size_ = size; |
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37 | |
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38 | if (size_) |
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39 | std::memcpy (data_, data, size_); |
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40 | } |
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41 | |
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42 | template <typename C> |
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43 | buffer<C>:: |
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44 | buffer (const void* data, size_t size, size_t capacity) |
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45 | { |
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46 | if (size > capacity) |
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47 | throw bounds<C> (); |
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48 | |
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49 | this->capacity (capacity); |
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50 | size_ = size; |
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51 | |
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52 | if (size_) |
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53 | std::memcpy (data_, data, size_); |
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54 | } |
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55 | |
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56 | template <typename C> |
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57 | buffer<C>:: |
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58 | buffer (void* data, size_t size, size_t capacity, bool own) |
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59 | { |
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60 | if (size > capacity) |
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61 | throw bounds<C> (); |
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62 | |
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63 | if (own) |
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64 | { |
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65 | data_ = reinterpret_cast<char*> (data); |
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66 | size_ = size; |
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67 | capacity_ = capacity; |
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68 | } |
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69 | else |
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70 | { |
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71 | this->capacity (capacity); |
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72 | size_ = size; |
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73 | |
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74 | if (size_) |
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75 | std::memcpy (data_, data, size_); |
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76 | } |
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77 | } |
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78 | |
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79 | template <typename C> |
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80 | buffer<C>:: |
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81 | buffer (const buffer& other) |
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82 | : buffer_base () |
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83 | { |
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84 | capacity (other.capacity_); |
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85 | size_ = other.size_; |
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86 | |
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87 | if (size_) |
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88 | std::memcpy (data_, other.data_, size_); |
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89 | } |
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90 | |
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91 | template <typename C> |
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92 | buffer<C>& buffer<C>:: |
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93 | operator= (const buffer& other) |
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94 | { |
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95 | if (this != &other) |
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96 | { |
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97 | capacity (other.capacity_, false); |
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98 | size_ = other.size_; |
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99 | |
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100 | if (size_) |
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101 | std::memcpy (data_, other.data_, size_); |
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102 | } |
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103 | |
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104 | return *this; |
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105 | } |
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106 | |
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107 | template <typename C> |
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108 | void buffer<C>:: |
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109 | swap (buffer& other) |
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110 | { |
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111 | char* tmp_data (data_); |
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112 | size_t tmp_size (size_); |
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113 | size_t tmp_capacity (capacity_); |
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114 | |
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115 | data_ = other.data_; |
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116 | size_ = other.size_; |
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117 | capacity_ = other.capacity_; |
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118 | |
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119 | other.data_ = tmp_data; |
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120 | other.size_ = tmp_size; |
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121 | other.capacity_ = tmp_capacity; |
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122 | } |
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123 | |
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124 | template <typename C> |
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125 | bool buffer<C>:: |
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126 | capacity (size_t capacity, bool copy) |
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127 | { |
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128 | if (size_ > capacity) |
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129 | throw bounds<C> (); |
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130 | |
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131 | if (capacity <= capacity_) |
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132 | { |
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133 | return false; // Do nothing if shrinking is requested. |
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134 | } |
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135 | else |
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136 | { |
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137 | char* data (reinterpret_cast<char*> (operator new (capacity))); |
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138 | |
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139 | if (copy && size_ > 0) |
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140 | std::memcpy (data, data_, size_); |
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141 | |
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142 | char* tmp (data_); |
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143 | data_ = data; |
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144 | capacity_ = capacity; |
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145 | |
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146 | operator delete (tmp); |
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147 | |
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148 | return true; |
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149 | } |
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150 | } |
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151 | } |
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152 | } |
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153 | } |
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