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nbougalis
2020-12-05 06:17:37 +00:00
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@@ -91,90 +91,89 @@ $(function() {
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#ifndef RIPPLE_BASICS_SAFE_CAST_H_INCLUDED</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#define RIPPLE_BASICS_SAFE_CAST_H_INCLUDED</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &lt;ripple/beast/cxx17/type_traits.h&gt;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/type_traits.html">type_traits</a>&gt;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment">// safe_cast adds compile-time checks to a static_cast to ensure that</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment">// the destination can hold all values of the source. This is particularly</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="comment">// handy when the source or destination is an enumeration type.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="namespaceripple.html#a5adbc123c2d72443b7efd2ab8df961b1"> 33</a></span>&#160;<span class="keyword">static</span> constexpr <span class="keywordtype">bool</span> <a class="code" href="namespaceripple.html#a5adbc123c2d72443b7efd2ab8df961b1">is_safetocasttovalue_v</a> =</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; (std::is_integral_v&lt;Src&gt; &amp;&amp; std::is_integral_v&lt;Dest&gt;)&amp;&amp;(</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_signed.html">std::is_signed&lt;Src&gt;::value</a> || <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_unsigned.html">std::is_unsigned&lt;Dest&gt;::value</a>) &amp;&amp;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; (<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_signed.html">std::is_signed&lt;Src&gt;::value</a> != <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_signed.html">std::is_signed&lt;Dest&gt;::value</a></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; ? <span class="keyword">sizeof</span>(Dest) &gt; <span class="keyword">sizeof</span>(Src)</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; : sizeof(Dest) &gt;= sizeof(Src));</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="keyword">inline</span> constexpr std::</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; enable_if_t&lt;std::is_integral_v&lt;Dest&gt; &amp;&amp; std::is_integral_v&lt;Src&gt;, Dest&gt;</div>
<div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="namespaceripple.html#a7890a68e8c69029083b8ac82cf219140"> 43</a></span>&#160; <a class="code" href="namespaceripple.html#a6f30ee31f9359c69a5294921d5c10d0b">safe_cast</a>(Src s) noexcept</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;{</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; static_assert(</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; std::is_signed_v&lt;Dest&gt; || std::is_unsigned_v&lt;Src&gt;,</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="stringliteral">&quot;Cannot cast signed to unsigned&quot;</span>);</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; constexpr <span class="keywordtype">unsigned</span> not_same =</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; std::is_signed_v&lt;Dest&gt; != std::is_signed_v&lt;Src&gt;;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; static_assert(</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keyword">sizeof</span>(Dest) &gt;= <span class="keyword">sizeof</span>(Src) + not_same,</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="stringliteral">&quot;Destination is too small to hold all values of source&quot;</span>);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>Dest<span class="keyword">&gt;</span>(s);</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;}</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="keyword">inline</span> constexpr std::</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; enable_if_t&lt;std::is_enum_v&lt;Dest&gt; &amp;&amp; std::is_integral_v&lt;Src&gt;, Dest&gt;</div>
<div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="namespaceripple.html#a804950522c4aed0eaeecf72d626a839b"> 59</a></span>&#160; <a class="code" href="namespaceripple.html#a6f30ee31f9359c69a5294921d5c10d0b">safe_cast</a>(Src s) noexcept</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;{</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>Dest<span class="keyword">&gt;</span>(safe_cast&lt;std::underlying_type_t&lt;Dest&gt;&gt;(s));</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;}</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="keyword">inline</span> constexpr std::</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; enable_if_t&lt;std::is_integral_v&lt;Dest&gt; &amp;&amp; std::is_enum_v&lt;Src&gt;, Dest&gt;</div>
<div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="namespaceripple.html#a028005f6656f5f2b8ee1e3e17d5e0af8"> 67</a></span>&#160; <a class="code" href="namespaceripple.html#a6f30ee31f9359c69a5294921d5c10d0b">safe_cast</a>(Src s) noexcept</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;{</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keywordflow">return</span> safe_cast&lt;Dest&gt;(<span class="keyword">static_cast&lt;</span><a class="codeRef" href="http://en.cppreference.com/w/cpp/types/underlying_type.html">std::underlying_type_t&lt;Src&gt;</a><span class="keyword">&gt;</span>(s));</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;}</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment">// unsafe_cast explicitly flags a static_cast as not necessarily able to hold</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment">// all values of the source. It includes a compile-time check so that if</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="comment">// underlying types become safe, it can be converted to a safe_cast.</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;<span class="keyword">inline</span> constexpr std::</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; enable_if_t&lt;std::is_integral_v&lt;Dest&gt; &amp;&amp; std::is_integral_v&lt;Src&gt;, Dest&gt;</div>
<div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="namespaceripple.html#ab4905950415a3a4bd7e2c9094adcf30f"> 79</a></span>&#160; <a class="code" href="namespaceripple.html#a488ed8c31419d36c6f9af5e9eef703a4">unsafe_cast</a>(Src s) noexcept</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;{</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; static_assert(</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; !is_safetocasttovalue_v&lt;Dest, Src&gt;,</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="stringliteral">&quot;Only unsafe if casting signed to unsigned or &quot;</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="stringliteral">&quot;destination is too small&quot;</span>);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>Dest<span class="keyword">&gt;</span>(s);</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;}</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="keyword">inline</span> constexpr std::</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; enable_if_t&lt;std::is_enum_v&lt;Dest&gt; &amp;&amp; std::is_integral_v&lt;Src&gt;, Dest&gt;</div>
<div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="namespaceripple.html#a51f247f0d49bb4b1750b71d873c1a194"> 91</a></span>&#160; <a class="code" href="namespaceripple.html#a488ed8c31419d36c6f9af5e9eef703a4">unsafe_cast</a>(Src s) noexcept</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;{</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>Dest<span class="keyword">&gt;</span>(unsafe_cast&lt;std::underlying_type_t&lt;Dest&gt;&gt;(s));</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;}</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;<span class="keyword">inline</span> constexpr std::</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; enable_if_t&lt;std::is_integral_v&lt;Dest&gt; &amp;&amp; std::is_enum_v&lt;Src&gt;, Dest&gt;</div>
<div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="namespaceripple.html#afadd26fe6df3774c0b409a88e271a990"> 99</a></span>&#160; <a class="code" href="namespaceripple.html#a488ed8c31419d36c6f9af5e9eef703a4">unsafe_cast</a>(Src s) noexcept</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;{</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keywordflow">return</span> unsafe_cast&lt;Dest&gt;(<span class="keyword">static_cast&lt;</span><a class="codeRef" href="http://en.cppreference.com/w/cpp/types/underlying_type.html">std::underlying_type_t&lt;Src&gt;</a><span class="keyword">&gt;</span>(s));</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;}</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;} <span class="comment">// namespace ripple</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/type_traits.html">type_traits</a>&gt;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceripple.html">ripple</a> {</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="comment">// safe_cast adds compile-time checks to a static_cast to ensure that</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment">// the destination can hold all values of the source. This is particularly</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment">// handy when the source or destination is an enumeration type.</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="namespaceripple.html#a5adbc123c2d72443b7efd2ab8df961b1"> 32</a></span>&#160;<span class="keyword">static</span> constexpr <span class="keywordtype">bool</span> <a class="code" href="namespaceripple.html#a5adbc123c2d72443b7efd2ab8df961b1">is_safetocasttovalue_v</a> =</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; (std::is_integral_v&lt;Src&gt; &amp;&amp; std::is_integral_v&lt;Dest&gt;)&amp;&amp;(</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_signed.html">std::is_signed&lt;Src&gt;::value</a> || <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_unsigned.html">std::is_unsigned&lt;Dest&gt;::value</a>) &amp;&amp;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; (<a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_signed.html">std::is_signed&lt;Src&gt;::value</a> != <a class="codeRef" href="http://en.cppreference.com/w/cpp/types/is_signed.html">std::is_signed&lt;Dest&gt;::value</a></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; ? <span class="keyword">sizeof</span>(Dest) &gt; <span class="keyword">sizeof</span>(Src)</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; : sizeof(Dest) &gt;= sizeof(Src));</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="keyword">inline</span> constexpr std::</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; enable_if_t&lt;std::is_integral_v&lt;Dest&gt; &amp;&amp; std::is_integral_v&lt;Src&gt;, Dest&gt;</div>
<div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="namespaceripple.html#a7890a68e8c69029083b8ac82cf219140"> 42</a></span>&#160; <a class="code" href="namespaceripple.html#a6f30ee31f9359c69a5294921d5c10d0b">safe_cast</a>(Src s) noexcept</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;{</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; static_assert(</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; std::is_signed_v&lt;Dest&gt; || std::is_unsigned_v&lt;Src&gt;,</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="stringliteral">&quot;Cannot cast signed to unsigned&quot;</span>);</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; constexpr <span class="keywordtype">unsigned</span> not_same =</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; std::is_signed_v&lt;Dest&gt; != std::is_signed_v&lt;Src&gt;;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; static_assert(</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keyword">sizeof</span>(Dest) &gt;= <span class="keyword">sizeof</span>(Src) + not_same,</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="stringliteral">&quot;Destination is too small to hold all values of source&quot;</span>);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>Dest<span class="keyword">&gt;</span>(s);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;}</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="keyword">inline</span> constexpr std::</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; enable_if_t&lt;std::is_enum_v&lt;Dest&gt; &amp;&amp; std::is_integral_v&lt;Src&gt;, Dest&gt;</div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="namespaceripple.html#a804950522c4aed0eaeecf72d626a839b"> 58</a></span>&#160; <a class="code" href="namespaceripple.html#a6f30ee31f9359c69a5294921d5c10d0b">safe_cast</a>(Src s) noexcept</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;{</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>Dest<span class="keyword">&gt;</span>(safe_cast&lt;std::underlying_type_t&lt;Dest&gt;&gt;(s));</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;}</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="keyword">inline</span> constexpr std::</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; enable_if_t&lt;std::is_integral_v&lt;Dest&gt; &amp;&amp; std::is_enum_v&lt;Src&gt;, Dest&gt;</div>
<div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="namespaceripple.html#a028005f6656f5f2b8ee1e3e17d5e0af8"> 66</a></span>&#160; <a class="code" href="namespaceripple.html#a6f30ee31f9359c69a5294921d5c10d0b">safe_cast</a>(Src s) noexcept</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;{</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordflow">return</span> safe_cast&lt;Dest&gt;(<span class="keyword">static_cast&lt;</span><a class="codeRef" href="http://en.cppreference.com/w/cpp/types/underlying_type.html">std::underlying_type_t&lt;Src&gt;</a><span class="keyword">&gt;</span>(s));</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;}</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="comment">// unsafe_cast explicitly flags a static_cast as not necessarily able to hold</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment">// all values of the source. It includes a compile-time check so that if</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment">// underlying types become safe, it can be converted to a safe_cast.</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="keyword">inline</span> constexpr std::</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; enable_if_t&lt;std::is_integral_v&lt;Dest&gt; &amp;&amp; std::is_integral_v&lt;Src&gt;, Dest&gt;</div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="namespaceripple.html#ab4905950415a3a4bd7e2c9094adcf30f"> 78</a></span>&#160; <a class="code" href="namespaceripple.html#a488ed8c31419d36c6f9af5e9eef703a4">unsafe_cast</a>(Src s) noexcept</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;{</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; static_assert(</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; !is_safetocasttovalue_v&lt;Dest, Src&gt;,</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="stringliteral">&quot;Only unsafe if casting signed to unsigned or &quot;</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="stringliteral">&quot;destination is too small&quot;</span>);</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>Dest<span class="keyword">&gt;</span>(s);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;}</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="keyword">inline</span> constexpr std::</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; enable_if_t&lt;std::is_enum_v&lt;Dest&gt; &amp;&amp; std::is_integral_v&lt;Src&gt;, Dest&gt;</div>
<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="namespaceripple.html#a51f247f0d49bb4b1750b71d873c1a194"> 90</a></span>&#160; <a class="code" href="namespaceripple.html#a488ed8c31419d36c6f9af5e9eef703a4">unsafe_cast</a>(Src s) noexcept</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;{</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span>Dest<span class="keyword">&gt;</span>(unsafe_cast&lt;std::underlying_type_t&lt;Dest&gt;&gt;(s));</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;}</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> Dest, <span class="keyword">class</span> Src&gt;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="keyword">inline</span> constexpr std::</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; enable_if_t&lt;std::is_integral_v&lt;Dest&gt; &amp;&amp; std::is_enum_v&lt;Src&gt;, Dest&gt;</div>
<div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="namespaceripple.html#afadd26fe6df3774c0b409a88e271a990"> 98</a></span>&#160; <a class="code" href="namespaceripple.html#a488ed8c31419d36c6f9af5e9eef703a4">unsafe_cast</a>(Src s) noexcept</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;{</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordflow">return</span> unsafe_cast&lt;Dest&gt;(<span class="keyword">static_cast&lt;</span><a class="codeRef" href="http://en.cppreference.com/w/cpp/types/underlying_type.html">std::underlying_type_t&lt;Src&gt;</a><span class="keyword">&gt;</span>(s));</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;}</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; </div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;} <span class="comment">// namespace ripple</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="preprocessor">#endif</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="ais_signed_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/is_signed.html">std::is_signed</a></div></div>
<div class="ttc" id="ais_unsigned_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/is_unsigned.html">std::is_unsigned</a></div></div>
@@ -182,7 +181,7 @@ $(function() {
<div class="ttc" id="aunderlying_type_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/types/underlying_type.html">std::underlying_type_t</a></div></div>
<div class="ttc" id="anamespaceripple_html_a6f30ee31f9359c69a5294921d5c10d0b"><div class="ttname"><a href="namespaceripple.html#a6f30ee31f9359c69a5294921d5c10d0b">ripple::safe_cast</a></div><div class="ttdeci">constexpr std::enable_if_t&lt; std::is_same_v&lt; typename Dest::unit_type, typename Src::unit_type &gt; &amp;&amp;std::is_integral_v&lt; typename Dest::value_type &gt; &amp;&amp;std::is_integral_v&lt; typename Src::value_type &gt;, Dest &gt; safe_cast(Src s) noexcept</div><div class="ttdef"><b>Definition:</b> <a href="FeeUnits_8h_source.html#l00537">FeeUnits.h:537</a></div></div>
<div class="ttc" id="anamespaceripple_html"><div class="ttname"><a href="namespaceripple.html">ripple</a></div><div class="ttdoc">Use hash_* containers for keys that do not need a cryptographically secure hashing algorithm.</div><div class="ttdef"><b>Definition:</b> <a href="RCLCensorshipDetector_8h_source.html#l00029">RCLCensorshipDetector.h:29</a></div></div>
<div class="ttc" id="anamespaceripple_html_a5adbc123c2d72443b7efd2ab8df961b1"><div class="ttname"><a href="namespaceripple.html#a5adbc123c2d72443b7efd2ab8df961b1">ripple::is_safetocasttovalue_v</a></div><div class="ttdeci">static constexpr bool is_safetocasttovalue_v</div><div class="ttdef"><b>Definition:</b> <a href="safe__cast_8h_source.html#l00033">safe_cast.h:33</a></div></div>
<div class="ttc" id="anamespaceripple_html_a5adbc123c2d72443b7efd2ab8df961b1"><div class="ttname"><a href="namespaceripple.html#a5adbc123c2d72443b7efd2ab8df961b1">ripple::is_safetocasttovalue_v</a></div><div class="ttdeci">static constexpr bool is_safetocasttovalue_v</div><div class="ttdef"><b>Definition:</b> <a href="safe__cast_8h_source.html#l00032">safe_cast.h:32</a></div></div>
<div class="ttc" id="atype_traits_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/type_traits.html">type_traits</a></div></div>
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