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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* bptr.h --</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"></span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> This file is part of the UPX executable compressor.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"></span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> Copyright (C) 1996-2016 Markus Franz Xaver Johannes Oberhumer</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> Copyright (C) 1996-2016 Laszlo Molnar</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> All Rights Reserved.</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"></span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> UPX and the UCL library are free software; you can redistribute them</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> and/or modify them under the terms of the GNU General Public License as</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> published by the Free Software Foundation; either version 2 of</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> the License, or (at your option) any later version.</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"></span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> This program is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> GNU General Public License for more details.</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"></span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> You should have received a copy of the GNU General Public License</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> along with this program; see the file COPYING.</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> If not, write to the Free Software Foundation, Inc.,</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> Markus F.X.J. Oberhumer Laszlo Molnar</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> <markus@oberhumer.com> <ezerotven+github@gmail.com></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> */</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#ifndef __UPX_BPTR_H</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#define __UPX_BPTR_H 1</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">/*************************************************************************</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// BoundedPtr</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">**************************************************************************/</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">template</span> <<span class="keyword">class</span> T></div><div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="class_bounded_ptr.html"> 38</a></span> <span class="keyword">class </span><a class="code" href="class_bounded_ptr.html">BoundedPtr</a></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> {</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="comment">//typedef T* StoredType;</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="comment">//typedef T* PointerType;</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">//typedef T& ReferenceType;</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  ~<a class="code" href="class_bounded_ptr.html">BoundedPtr</a>() { }</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">explicit</span> <a class="code" href="class_bounded_ptr.html">BoundedPtr</a>(<span class="keywordtype">void</span>* base, <span class="keywordtype">size_t</span> size_in_bytes, T* ptr=0)</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  : ptr_(ptr), base_(base), size_in_bytes_(0)</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  {</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  assert(base_ != NULL);</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  size_in_bytes_ = mem_size(1, size_in_bytes);</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  check();</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  }</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="comment">// assignment</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="class_bounded_ptr.html">BoundedPtr</a>& operator= (<span class="keyword">const</span> <a class="code" href="class_bounded_ptr.html">BoundedPtr</a>& other) {</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  assert(base_ == other.base_);</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  assert(size_in_bytes_ == other.size_in_bytes_);</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  ptr_ = other.ptr_; check(); <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  }</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <a class="code" href="class_bounded_ptr.html">BoundedPtr</a>& operator= (T* other) {</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  ptr_ = other; check(); <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">operator</span> T* () { <span class="keywordflow">return</span> ptr_; }</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">operator</span> <span class="keyword">const</span> T* () <span class="keyword">const</span> { <span class="keywordflow">return</span> ptr_; }</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <a class="code" href="class_bounded_ptr.html">BoundedPtr</a>& operator += (<span class="keywordtype">size_t</span> n) {</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  checkNULL(); ptr_ += n; checkRange(); <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  }</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="class_bounded_ptr.html">BoundedPtr</a>& operator -= (<span class="keywordtype">size_t</span> n) {</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  checkNULL(); ptr_ -= n; checkRange(); <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <a class="code" href="class_bounded_ptr.html">BoundedPtr</a>& operator ++ (<span class="keywordtype">void</span>) {</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  checkNULL(); ptr_ += 1; checkRange(); <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordtype">void</span> checkNULL()<span class="keyword"> const </span>{</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">if</span> __acc_very_unlikely(!ptr_)</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  throwCantUnpack(<span class="stringliteral">"unexpected NULL pointer; take care!"</span>);</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  }</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordtype">void</span> checkRange()<span class="keyword"> const </span>{</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">size_t</span> off = (<span class="keyword">const</span> <span class="keywordtype">char</span> *) ptr_ - (<span class="keyword">const</span> <span class="keywordtype">char</span> *) base_;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">if</span> __acc_very_unlikely(off > size_in_bytes_)</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  throwCantUnpack(<span class="stringliteral">"pointer out of range; take care!"</span>);</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  }</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordtype">void</span> check()<span class="keyword"> const </span>{ <span class="comment">// check ptr_ invariant: either NULL or valid checkRange()</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">if</span> (ptr_ != NULL)</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  checkRange();</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  T* ptr_;</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordtype">void</span>* base_;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordtype">size_t</span> size_in_bytes_;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// disable copy</span></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <a class="code" href="class_bounded_ptr.html">BoundedPtr</a>(<span class="keyword">const</span> <a class="code" href="class_bounded_ptr.html">BoundedPtr</a>&); <span class="comment">// {}</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// disable dynamic allocation</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  DISABLE_NEW_DELETE</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> };</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor">#endif </span><span class="comment">/* already included */</span><span class="preprocessor"></span></div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment">/* vim:set ts=4 sw=4 et: */</span></div><div class="ttc" id="class_bounded_ptr_html"><div class="ttname"><a href="class_bounded_ptr.html">BoundedPtr</a></div><div class="ttdef"><b>Definition:</b> bptr.h:38</div></div>
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