Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/harfbuzz/src/hb-set.hh @ 32:72c1b70d4f5c

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author Franz Glasner <fzglas.hg@dom66.de>
date Sun, 21 Sep 2025 15:10:12 +0200
parents b50eed0cc0ef
children
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1 /*
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2 * Copyright © 2012,2017 Google, Inc.
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3 * Copyright © 2021 Behdad Esfahbod
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4 *
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5 * This is part of HarfBuzz, a text shaping library.
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6 *
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7 * Permission is hereby granted, without written agreement and without
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8 * license or royalty fees, to use, copy, modify, and distribute this
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9 * software and its documentation for any purpose, provided that the
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10 * above copyright notice and the following two paragraphs appear in
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11 * all copies of this software.
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12 *
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13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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17 * DAMAGE.
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18 *
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19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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24 *
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25 * Google Author(s): Behdad Esfahbod
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26 */
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28 #ifndef HB_SET_HH
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29 #define HB_SET_HH
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31 #include "hb.hh"
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32 #include "hb-bit-set-invertible.hh"
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35 template <typename impl_t>
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36 struct hb_sparseset_t
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37 {
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38 hb_object_header_t header;
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39 impl_t s;
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41 hb_sparseset_t () { init (); }
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42 ~hb_sparseset_t () { fini (); }
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43
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44 hb_sparseset_t (const hb_sparseset_t& other) : hb_sparseset_t () { set (other); }
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45 hb_sparseset_t (hb_sparseset_t&& other) : hb_sparseset_t () { s = std::move (other.s); }
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46 hb_sparseset_t& operator = (const hb_sparseset_t& other) { set (other); return *this; }
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47 hb_sparseset_t& operator = (hb_sparseset_t&& other) { s = std::move (other.s); return *this; }
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48 friend void swap (hb_sparseset_t& a, hb_sparseset_t& b) { hb_swap (a.s, b.s); }
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49
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50 hb_sparseset_t (std::initializer_list<hb_codepoint_t> lst) : hb_sparseset_t ()
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51 {
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52 for (auto&& item : lst)
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53 add (item);
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54 }
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55 template <typename Iterable,
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56 hb_requires (hb_is_iterable (Iterable))>
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57 hb_sparseset_t (const Iterable &o) : hb_sparseset_t ()
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58 {
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59 hb_copy (o, *this);
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60 }
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61
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62 void init ()
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63 {
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64 hb_object_init (this);
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65 s.init ();
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66 }
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67 void fini ()
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68 {
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69 hb_object_fini (this);
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70 s.fini ();
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71 }
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72
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73 explicit operator bool () const { return !is_empty (); }
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74
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75 void err () { s.err (); }
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76 bool in_error () const { return s.in_error (); }
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78 void alloc (unsigned sz) { s.alloc (sz); }
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79 void reset () { s.reset (); }
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80 void clear () { s.clear (); }
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81 void invert () { s.invert (); }
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82 bool is_empty () const { return s.is_empty (); }
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83 uint32_t hash () const { return s.hash (); }
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85 void add (hb_codepoint_t g) { s.add (g); }
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86 bool add_range (hb_codepoint_t a, hb_codepoint_t b) { return s.add_range (a, b); }
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88 template <typename T>
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89 void add_array (const T *array, unsigned int count, unsigned int stride=sizeof(T))
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90 { s.add_array (array, count, stride); }
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91 template <typename T>
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92 void add_array (const hb_array_t<const T>& arr) { add_array (&arr, arr.len ()); }
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94 /* Might return false if array looks unsorted.
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95 * Used for faster rejection of corrupt data. */
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96 template <typename T>
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97 bool add_sorted_array (const T *array, unsigned int count, unsigned int stride=sizeof(T))
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98 { return s.add_sorted_array (array, count, stride); }
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99 template <typename T>
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100 bool add_sorted_array (const hb_sorted_array_t<const T>& arr) { return add_sorted_array (&arr, arr.len ()); }
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101
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102 void del (hb_codepoint_t g) { s.del (g); }
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103 void del_range (hb_codepoint_t a, hb_codepoint_t b) { s.del_range (a, b); }
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104
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105 bool get (hb_codepoint_t g) const { return s.get (g); }
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106
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107 /* Has interface. */
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108 bool operator [] (hb_codepoint_t k) const { return get (k); }
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109 bool has (hb_codepoint_t k) const { return (*this)[k]; }
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110
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111 /* Predicate. */
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112 bool operator () (hb_codepoint_t k) const { return has (k); }
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113
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114 /* Sink interface. */
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115 hb_sparseset_t& operator << (hb_codepoint_t v)
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116 { add (v); return *this; }
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117 hb_sparseset_t& operator << (const hb_pair_t<hb_codepoint_t, hb_codepoint_t>& range)
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118 { add_range (range.first, range.second); return *this; }
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119
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120 bool intersects (hb_codepoint_t first, hb_codepoint_t last) const
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121 { return s.intersects (first, last); }
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122
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123 void set (const hb_sparseset_t &other) { s.set (other.s); }
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124
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125 bool is_equal (const hb_sparseset_t &other) const { return s.is_equal (other.s); }
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126 bool operator == (const hb_set_t &other) const { return is_equal (other); }
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127 bool operator != (const hb_set_t &other) const { return !is_equal (other); }
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128
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129 bool is_subset (const hb_sparseset_t &larger_set) const { return s.is_subset (larger_set.s); }
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130
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131 void union_ (const hb_sparseset_t &other) { s.union_ (other.s); }
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132 void intersect (const hb_sparseset_t &other) { s.intersect (other.s); }
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133 void subtract (const hb_sparseset_t &other) { s.subtract (other.s); }
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134 void symmetric_difference (const hb_sparseset_t &other) { s.symmetric_difference (other.s); }
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135
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136 bool next (hb_codepoint_t *codepoint) const { return s.next (codepoint); }
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137 bool previous (hb_codepoint_t *codepoint) const { return s.previous (codepoint); }
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138 bool next_range (hb_codepoint_t *first, hb_codepoint_t *last) const
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139 { return s.next_range (first, last); }
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140 bool previous_range (hb_codepoint_t *first, hb_codepoint_t *last) const
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141 { return s.previous_range (first, last); }
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142 unsigned int next_many (hb_codepoint_t codepoint, hb_codepoint_t *out, unsigned int size) const
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143 { return s.next_many (codepoint, out, size); }
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144
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145 unsigned int get_population () const { return s.get_population (); }
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146 hb_codepoint_t get_min () const { return s.get_min (); }
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147 hb_codepoint_t get_max () const { return s.get_max (); }
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148
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149 static constexpr hb_codepoint_t INVALID = impl_t::INVALID;
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150
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151 /*
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152 * Iterator implementation.
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153 */
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154 using iter_t = typename impl_t::iter_t;
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155 iter_t iter () const { return iter_t (this->s); }
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156 operator iter_t () const { return iter (); }
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157 };
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158
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159 struct hb_set_t : hb_sparseset_t<hb_bit_set_invertible_t>
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160 {
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161 using sparseset = hb_sparseset_t<hb_bit_set_invertible_t>;
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162
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163 ~hb_set_t () = default;
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164 hb_set_t () : sparseset () {};
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165 hb_set_t (const hb_set_t &o) : sparseset ((sparseset &) o) {};
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166 hb_set_t (hb_set_t&& o) : sparseset (std::move ((sparseset &) o)) {}
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167 hb_set_t& operator = (const hb_set_t&) = default;
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168 hb_set_t& operator = (hb_set_t&&) = default;
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169 hb_set_t (std::initializer_list<hb_codepoint_t> lst) : sparseset (lst) {}
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170 template <typename Iterable,
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171 hb_requires (hb_is_iterable (Iterable))>
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172 hb_set_t (const Iterable &o) : sparseset (o) {}
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173 };
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174
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175 static_assert (hb_set_t::INVALID == HB_SET_VALUE_INVALID, "");
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176
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177
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178 #endif /* HB_SET_HH */