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<div class="title">cdflags.cpp</div> </div>
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<a href="cdflags_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*****************************************************************************/</span><span class="comment"></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"> *\file cdflags.cpp</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *\brief Implementation for CDFlags class</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Author: Clark Barrett</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * Created: Thu Jan 26 16:53:28 2006</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * <hr></span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * License to use, copy, modify, sell and/or distribute this software</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * and its documentation for any purpose is hereby granted without</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * royalty, subject to the terms and conditions defined in the \ref</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * LICENSE file provided with this distribution.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * <hr></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"> */</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">/*****************************************************************************/</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "<a class="code" href="cdflags_8h.html" title="Context Dependent Vector of Flags.">cdflags.h</a>"</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="memory__manager__context_8h.html" title="Stack-based memory manager.">memory_manager_context.h</a>"</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">using namespace </span>CVC3;</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">using namespace </span>std;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a name="l00031"></a><span class="lineno"><a class="code" href="classCVC3_1_1CDFlags.html#abb050623665ab804a001e2167d72f2e0"> 31</a></span> <span class="keywordtype">void</span> <a class="code" href="classCVC3_1_1CDFlags.html#abb050623665ab804a001e2167d72f2e0">CDFlags::update</a>(<span class="keywordtype">unsigned</span> mask, <span class="keywordtype">int</span> scope, <span class="keywordtype">bool</span> setMask)</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>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(mask && (mask & (mask-1)) == 0, <span class="stringliteral">"Expected single bit mask"</span>);</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordflow">if</span> (scope < 0 || d_scope->level() <= scope) {</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  makeCurrent(scope);</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordflow">if</span> (setMask) d_flags = d_flags | mask;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordflow">else</span> d_flags = d_flags & ~mask;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  }</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">// Kind of ugly: have to "change the past", but that's the price we pay for</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="comment">// keeping all the flags in one word for efficiency.</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="code" href="debug_8h.html#a600cb2d68efe7cc413cccbb5714c7016">IF_DEBUG</a>(<span class="keywordtype">bool</span> on = (d_flags & mask) != 0;)</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// Update current object</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">if</span> (setMask) d_flags = d_flags | mask;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">else</span> d_flags = d_flags & ~mask;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="classCVC3_1_1ContextObjChain.html">ContextObjChain</a>** lastPtr = &d_restore;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <a class="code" href="classCVC3_1_1CDFlags.html">CDFlags</a>* pastFlags;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <a class="code" href="classCVC3_1_1Scope.html">Scope</a>* lastScope = d_scope;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">bool</span> done = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// Update past objects</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  pastFlags = (<a class="code" href="classCVC3_1_1CDFlags.html">CDFlags</a>*)((*lastPtr)->d_data);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(pastFlags != NULL, <span class="stringliteral">"expected non-NULL data"</span>);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">if</span> (pastFlags->d_scope-><a class="code" href="classCVC3_1_1ContextObj.html#abf9828c2d05c7d48a55827ae4c117b91">level</a>() >= scope) {</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>((on && (pastFlags-><a class="code" href="classCVC3_1_1CDFlags.html#a8d203d30ebfb2164c0172a5f9ba6acba">d_flags</a> & mask))</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  || (!on && !(pastFlags-><a class="code" href="classCVC3_1_1CDFlags.html#a8d203d30ebfb2164c0172a5f9ba6acba">d_flags</a> & mask)),</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="stringliteral">"Expected no change in flag since scope"</span>);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">if</span> (setMask) {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  pastFlags-><a class="code" href="classCVC3_1_1CDFlags.html#a8d203d30ebfb2164c0172a5f9ba6acba">d_flags</a> = pastFlags-><a class="code" href="classCVC3_1_1CDFlags.html#a8d203d30ebfb2164c0172a5f9ba6acba">d_flags</a> | mask;</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>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  pastFlags-><a class="code" href="classCVC3_1_1CDFlags.html#a8d203d30ebfb2164c0172a5f9ba6acba">d_flags</a> = pastFlags-><a class="code" href="classCVC3_1_1CDFlags.html#a8d203d30ebfb2164c0172a5f9ba6acba">d_flags</a> & ~mask;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">if</span> (pastFlags->d_scope-><a class="code" href="classCVC3_1_1ContextObj.html#abf9828c2d05c7d48a55827ae4c117b91">level</a>() == scope) {</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  done = <span class="keyword">true</span>; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  }</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  lastScope = pastFlags->d_scope;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  } <span class="keywordflow">else</span> <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  lastPtr = &((*lastPtr)->d_restore);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(*lastPtr != NULL, <span class="stringliteral">"Should always be object at scope 0"</span>);</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  }</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">if</span> (done) <span class="keywordflow">return</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>  <span class="comment">// No past object exists at the target scope: create one</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(lastScope != NULL &&</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  lastScope-><a class="code" href="classCVC3_1_1Scope.html#ad5c67e42cab76cf985c2aff1fab5f16e">level</a>() > scope,</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="stringliteral">"Expected lastScope to be above target scope"</span>);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">while</span> (lastScope-><a class="code" href="classCVC3_1_1Scope.html#ad5c67e42cab76cf985c2aff1fab5f16e">level</a>() > scope) lastScope = lastScope-><a class="code" href="classCVC3_1_1Scope.html#aaf14b7225ee54df52812aaa7f6d08a30" title="Access functions.">prevScope</a>();</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>  <a class="code" href="classCVC3_1_1ContextObj.html">ContextObj</a>* data = pastFlags-><a class="code" href="classCVC3_1_1CDFlags.html#a33acad825f9e9bd5953483a948da241d" title="Make a copy of the current object so it can be restored to its current state.">makeCopy</a>(lastScope-><a class="code" href="classCVC3_1_1Scope.html#a95900e8234970f533045827446e05e64">getCMM</a>());</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  pastFlags->d_scope = lastScope;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="classCVC3_1_1ContextObjChain.html">ContextObjChain</a>* obj = <span class="keyword">new</span>(lastScope-><a class="code" href="classCVC3_1_1Scope.html#a95900e8234970f533045827446e05e64">getCMM</a>())</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <a class="code" href="classCVC3_1_1ContextObjChain.html">ContextObjChain</a>(data, <span class="keyword">this</span>, (*lastPtr)-><a class="code" href="classCVC3_1_1ContextObj.html#a60c1d2e2b5f4b8055a2a6619ce173bdc" title="The list of values on previous scopes; our destructor should clean up those.">d_restore</a>);</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  (*lastPtr)-><a class="code" href="classCVC3_1_1ContextObjChain.html#a64049e510cf64e4a96d6e1134479f467" title="Pointer to the previous copy which belongs to the same master.">d_restore</a> = obj;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  lastScope-><a class="code" href="group__Context.html#ga3fcf473cd27da6c7498f462650f75ac8" title="Called by ContextObj when created.">addToChain</a>(obj);</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>  <span class="comment">// Update newly created past object</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">if</span> (setMask) {</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  pastFlags-><a class="code" href="classCVC3_1_1CDFlags.html#a8d203d30ebfb2164c0172a5f9ba6acba">d_flags</a> = pastFlags-><a class="code" href="classCVC3_1_1CDFlags.html#a8d203d30ebfb2164c0172a5f9ba6acba">d_flags</a> | mask;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  }</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  pastFlags-><a class="code" href="classCVC3_1_1CDFlags.html#a8d203d30ebfb2164c0172a5f9ba6acba">d_flags</a> = pastFlags-><a class="code" href="classCVC3_1_1CDFlags.html#a8d203d30ebfb2164c0172a5f9ba6acba">d_flags</a> & ~mask;</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> }</div>
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