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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="preprocessor">#ifndef ROSE_Affirm_H</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="preprocessor">#define ROSE_Affirm_H</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include <Rose/Exception.h></span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span> </div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceRose.html">Rose</a> {</div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span> </div>
<div class="foldopen" id="foldopen00009" data-start="{" data-end="};">
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"><a class="line" href="classRose_1_1AffirmationError.html"> 9</a></span><span class="keyword">class </span><a class="code hl_class" href="classRose_1_1AffirmationError.html">AffirmationError</a>: <span class="keyword">public</span> <a class="code hl_class" href="classRose_1_1Exception.html">Exception</a> {</div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="keyword">public</span>:</div>
<div class="foldopen" id="foldopen00012" data-start="{" data-end="}">
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"><a class="line" href="classRose_1_1AffirmationError.html#af31805852b17138e50b8b55da668d790"> 12</a></span> <span class="keyword">explicit</span> <a class="code hl_function" href="classRose_1_1AffirmationError.html#af31805852b17138e50b8b55da668d790">AffirmationError</a>(<span class="keyword">const</span> std::string &mesg)</div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> : <a class="code hl_class" href="classRose_1_1Exception.html">Exception</a>(mesg) {}</div>
</div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> <a class="code hl_class" href="classRose_1_1AffirmationError.html">~AffirmationError</a>() throw() {}</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span>};</div>
</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment">// std::is_invocable backported for C++14</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="keyword">template</span><<span class="keyword">class </span>F, <span class="keyword">class</span>... Args></div>
<div class="foldopen" id="foldopen00020" data-start="{" data-end="};">
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"><a class="line" href="structRose_1_1is__invocable.html"> 20</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structRose_1_1is__invocable.html">is_invocable</a> {</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">template</span><<span class="keyword">class</span> U></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">static</span> <span class="keyword">auto</span> test(U *p) -> <span class="keyword">decltype</span>((*p)(std::declval<Args>()...), void(), std::true_type());</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">template</span><<span class="keyword">class</span> U></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">static</span> <span class="keyword">auto</span> test(...) -> <span class="keyword">decltype</span>(std::false_type());</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> value = <span class="keyword">decltype</span>(test<F>(0))::value;</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span>};</div>
</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span><span class="keyword">template</span><<span class="keyword">class</span> Value, <span class="keyword">class</span> Predicate></div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span><span class="keyword">typename</span> std::enable_if<is_invocable<Predicate, Value>::value, Value&>::type</div>
<div class="foldopen" id="foldopen00080" data-start="{" data-end="}">
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"><a class="line" href="namespaceRose.html#aa1eb31bee221dd14aa552a171fcff7e4"> 80</a></span><a class="code hl_function" href="namespaceRose.html#aa1eb31bee221dd14aa552a171fcff7e4">affirm</a>(Value&& value, Predicate predicate) {</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keywordflow">if</span> (predicate(value))</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="keywordflow">return</span> value;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classRose_1_1AffirmationError.html">AffirmationError</a>(<span class="stringliteral">"predicate failed for value"</span>);</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span>}</div>
</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span><span class="keyword">template</span><<span class="keyword">class</span> Value, <span class="keyword">class</span> Predicate></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span><span class="keyword">typename</span> std::enable_if<is_invocable<Predicate, Value>::value, Value&>::type</div>
<div class="foldopen" id="foldopen00088" data-start="{" data-end="}">
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"><a class="line" href="namespaceRose.html#adf94d8d1bd43a96f1d1e78ea14607977"> 88</a></span><a class="code hl_function" href="namespaceRose.html#aa1eb31bee221dd14aa552a171fcff7e4">affirm</a>(Value& value, Predicate predicate) {</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keywordflow">if</span> (predicate(value))</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="keywordflow">return</span> value;</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classRose_1_1AffirmationError.html">AffirmationError</a>(<span class="stringliteral">"predicate failed for value"</span>);</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span>}</div>
</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> </div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span><span class="keyword">template</span><<span class="keyword">class</span> Value, <span class="keyword">class</span> Predicate></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span><span class="keyword">typename</span> std::enable_if<is_invocable<Predicate, Value>::value, Value&>::type</div>
<div class="foldopen" id="foldopen00096" data-start="{" data-end="}">
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"><a class="line" href="namespaceRose.html#a0458af84e503ad523720a41cb67e330f"> 96</a></span><a class="code hl_function" href="namespaceRose.html#aa1eb31bee221dd14aa552a171fcff7e4">affirm</a>(Value&& value, Predicate predicate, std::string <span class="keyword">const</span>& message) {</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keywordflow">if</span> (predicate(value))</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keywordflow">return</span> value;</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classRose_1_1AffirmationError.html">AffirmationError</a>(message);</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span>}</div>
</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span><span class="keyword">template</span><<span class="keyword">class</span> Value, <span class="keyword">class</span> Predicate></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span><span class="keyword">typename</span> std::enable_if<is_invocable<Predicate, Value>::value, Value&>::type</div>
<div class="foldopen" id="foldopen00104" data-start="{" data-end="}">
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"><a class="line" href="namespaceRose.html#aea87bdbcfc735ed9c9746b831bb1b7ee"> 104</a></span><a class="code hl_function" href="namespaceRose.html#aa1eb31bee221dd14aa552a171fcff7e4">affirm</a>(Value& value, Predicate predicate, std::string <span class="keyword">const</span>& message) {</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="keywordflow">if</span> (predicate(value))</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="keywordflow">return</span> value;</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classRose_1_1AffirmationError.html">AffirmationError</a>(message);</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span>}</div>
</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span><span class="keyword">template</span><<span class="keyword">class</span> Value></div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span>Value&</div>
<div class="foldopen" id="foldopen00139" data-start="{" data-end="}">
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"><a class="line" href="namespaceRose.html#ad49bfbec140bb021daf23598ce157c3e"> 139</a></span><a class="code hl_function" href="namespaceRose.html#aa1eb31bee221dd14aa552a171fcff7e4">affirm</a>(Value&& value) {</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <span class="keywordflow">if</span> (value)</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keywordflow">return</span> value;</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classRose_1_1AffirmationError.html">AffirmationError</a>(<span class="stringliteral">"value does not evaluate to true in Boolean context"</span>);</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span>}</div>
</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span><span class="keyword">template</span><<span class="keyword">class</span> Value></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span>Value&</div>
<div class="foldopen" id="foldopen00147" data-start="{" data-end="}">
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"><a class="line" href="namespaceRose.html#af806ecd92952bab7b8208866d7cf63eb"> 147</a></span><a class="code hl_function" href="namespaceRose.html#aa1eb31bee221dd14aa552a171fcff7e4">affirm</a>(Value& value) {</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> <span class="keywordflow">if</span> (value)</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <span class="keywordflow">return</span> value;</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classRose_1_1AffirmationError.html">AffirmationError</a>(<span class="stringliteral">"value does not evaluate to true in Boolean context"</span>);</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span>}</div>
</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> </div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span><span class="keyword">template</span><<span class="keyword">class</span> Value></div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span>Value&</div>
<div class="foldopen" id="foldopen00155" data-start="{" data-end="}">
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"><a class="line" href="namespaceRose.html#ac6b430f6afc456201ee8d4b341c0f807"> 155</a></span><a class="code hl_function" href="namespaceRose.html#aa1eb31bee221dd14aa552a171fcff7e4">affirm</a>(Value&& value, std::string <span class="keyword">const</span>& message) {</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <span class="keywordflow">if</span> (value)</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keywordflow">return</span> value;</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classRose_1_1AffirmationError.html">AffirmationError</a>(message);</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span>}</div>
</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> </div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span><span class="keyword">template</span><<span class="keyword">class</span> Value></div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span>Value&</div>
<div class="foldopen" id="foldopen00163" data-start="{" data-end="}">
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"><a class="line" href="namespaceRose.html#a8f680627c6cf1723a39dca5e1bcdbde0"> 163</a></span><a class="code hl_function" href="namespaceRose.html#aa1eb31bee221dd14aa552a171fcff7e4">affirm</a>(Value& value, std::string <span class="keyword">const</span>& message) {</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> <span class="keywordflow">if</span> (value)</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keywordflow">return</span> value;</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classRose_1_1AffirmationError.html">AffirmationError</a>(message);</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span>}</div>
</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span><span class="keyword">template</span><<span class="keyword">class</span> Po<span class="keywordtype">int</span>er></div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span>Pointer&</div>
<div class="foldopen" id="foldopen00195" data-start="{" data-end="}">
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"><a class="line" href="namespaceRose.html#aa9277534b19b6341fc3d55db97f5f333"> 195</a></span><a class="code hl_function" href="namespaceRose.html#aa9277534b19b6341fc3d55db97f5f333">notnull</a>(Pointer&& pointer) {</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> <span class="keywordflow">if</span> (pointer)</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> <span class="keywordflow">return</span> pointer;</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classRose_1_1AffirmationError.html">AffirmationError</a>(<span class="stringliteral">"null pointer"</span>);</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span>}</div>
</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> </div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span><span class="keyword">template</span><<span class="keyword">class</span> Po<span class="keywordtype">int</span>er></div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span>Pointer&</div>
<div class="foldopen" id="foldopen00203" data-start="{" data-end="}">
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"><a class="line" href="namespaceRose.html#afb68b0c358994b5453371b6b3309ee52"> 203</a></span><a class="code hl_function" href="namespaceRose.html#aa9277534b19b6341fc3d55db97f5f333">notnull</a>(Pointer& pointer) {</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> <span class="keywordflow">if</span> (pointer)</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> <span class="keywordflow">return</span> pointer;</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> <span class="keywordflow">throw</span> <a class="code hl_class" href="classRose_1_1AffirmationError.html">AffirmationError</a>(<span class="stringliteral">"null pointer"</span>);</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span>}</div>
</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span>} <span class="comment">// namespace</span></div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> </div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span><span class="comment">// Convenience macro. The predicate should be a C++ Boolean expression in terms of a variable `x`. For example:</span></div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span><span class="comment">//</span></div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span><span class="comment">// const int n = ROSE_AFFIRM(foo(a, b), x < 100); // will throw if foo(a,b) returns a value >= 100</span></div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span><span class="comment">//</span></div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span><span class="preprocessor">#define ROSE_AFFIRM(VALUE, PREDICATE) ::Rose::affirm((VALUE), [](auto x) -> bool { return PREDICATE; })</span></div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> </div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclassRose_1_1AffirmationError_html"><div class="ttname"><a href="classRose_1_1AffirmationError.html">Rose::AffirmationError</a></div><div class="ttdoc">Exceptions for value assertions.</div><div class="ttdef"><b>Definition</b> <a href="Affirm_8h_source.html#l00009">Affirm.h:9</a></div></div>
<div class="ttc" id="aclassRose_1_1AffirmationError_html_af31805852b17138e50b8b55da668d790"><div class="ttname"><a href="classRose_1_1AffirmationError.html#af31805852b17138e50b8b55da668d790">Rose::AffirmationError::AffirmationError</a></div><div class="ttdeci">AffirmationError(const std::string &mesg)</div><div class="ttdoc">Construct error with message.</div><div class="ttdef"><b>Definition</b> <a href="Affirm_8h_source.html#l00012">Affirm.h:12</a></div></div>
<div class="ttc" id="aclassRose_1_1Exception_html"><div class="ttname"><a href="classRose_1_1Exception.html">Rose::Exception</a></div><div class="ttdoc">Base class for all ROSE exceptions.</div><div class="ttdef"><b>Definition</b> <a href="Rose_2Exception_8h_source.html#l00010">Rose/Exception.h:10</a></div></div>
<div class="ttc" id="anamespaceRose_html"><div class="ttname"><a href="namespaceRose.html">Rose</a></div><div class="ttdoc">The ROSE library.</div><div class="ttdef"><b>Definition</b> <a href="BinaryTutorial_8dox_source.html#l00003">BinaryTutorial.dox:3</a></div></div>
<div class="ttc" id="anamespaceRose_html_aa1eb31bee221dd14aa552a171fcff7e4"><div class="ttname"><a href="namespaceRose.html#aa1eb31bee221dd14aa552a171fcff7e4">Rose::affirm</a></div><div class="ttdeci">std::enable_if< is_invocable< Predicate, Value >::value, Value & >::type affirm(Value &&value, Predicate predicate)</div><div class="ttdoc">Test something about a value and then return it.</div><div class="ttdef"><b>Definition</b> <a href="Affirm_8h_source.html#l00080">Affirm.h:80</a></div></div>
<div class="ttc" id="anamespaceRose_html_aa9277534b19b6341fc3d55db97f5f333"><div class="ttname"><a href="namespaceRose.html#aa9277534b19b6341fc3d55db97f5f333">Rose::notnull</a></div><div class="ttdeci">Pointer & notnull(Pointer &&pointer)</div><div class="ttdoc">Check for non-null pointer.</div><div class="ttdef"><b>Definition</b> <a href="Affirm_8h_source.html#l00195">Affirm.h:195</a></div></div>
<div class="ttc" id="astructRose_1_1is__invocable_html"><div class="ttname"><a href="structRose_1_1is__invocable.html">Rose::is_invocable</a></div><div class="ttdef"><b>Definition</b> <a href="Affirm_8h_source.html#l00020">Affirm.h:20</a></div></div>
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