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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"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*****************************************************************************/</span><span class="comment"></span>
<a name="l00002"></a>00002 <span class="comment">/*!</span>
<a name="l00003"></a>00003 <span class="comment"> *\file cdflags.cpp</span>
<a name="l00004"></a>00004 <span class="comment"> *\brief Implementation for CDFlags class</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * Author: Clark Barrett</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> * Created: Thu Jan 26 16:53:28 2006</span>
<a name="l00009"></a>00009 <span class="comment"> *</span>
<a name="l00010"></a>00010 <span class="comment"> * <hr></span>
<a name="l00011"></a>00011 <span class="comment"> *</span>
<a name="l00012"></a>00012 <span class="comment"> * License to use, copy, modify, sell and/or distribute this software</span>
<a name="l00013"></a>00013 <span class="comment"> * and its documentation for any purpose is hereby granted without</span>
<a name="l00014"></a>00014 <span class="comment"> * royalty, subject to the terms and conditions defined in the \ref</span>
<a name="l00015"></a>00015 <span class="comment"> * LICENSE file provided with this distribution.</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> * <hr></span>
<a name="l00018"></a>00018 <span class="comment"> *</span>
<a name="l00019"></a>00019 <span class="comment"> */</span>
<a name="l00020"></a>00020 <span class="comment">/*****************************************************************************/</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="cdflags_8h.html" title="Context Dependent Vector of Flags.">cdflags.h</a>"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="memory__manager__context_8h.html" title="Stack-based memory manager.">memory_manager_context.h</a>"</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="keyword">using namespace </span>CVC3;
<a name="l00028"></a>00028 <span class="keyword">using namespace </span>std;
<a name="l00029"></a>00029
<a name="l00030"></a>00030
<a name="l00031"></a><a class="code" href="classCVC3_1_1CDFlags.html#abb050623665ab804a001e2167d72f2e0">00031</a> <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)
<a name="l00032"></a>00032 {
<a name="l00033"></a>00033 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(mask && (mask & (mask-1)) == 0, <span class="stringliteral">"Expected single bit mask"</span>);
<a name="l00034"></a>00034 <span class="keywordflow">if</span> (scope < 0 || d_scope->level() <= scope) {
<a name="l00035"></a>00035 makeCurrent(scope);
<a name="l00036"></a>00036 <span class="keywordflow">if</span> (setMask) d_flags = d_flags | mask;
<a name="l00037"></a>00037 <span class="keywordflow">else</span> d_flags = d_flags & ~mask;
<a name="l00038"></a>00038 }
<a name="l00039"></a>00039 <span class="keywordflow">else</span> {
<a name="l00040"></a>00040 <span class="comment">// Kind of ugly: have to "change the past", but that's the price we pay for</span>
<a name="l00041"></a>00041 <span class="comment">// keeping all the flags in one word for efficiency.</span>
<a name="l00042"></a>00042 <a class="code" href="debug_8h.html#a600cb2d68efe7cc413cccbb5714c7016">IF_DEBUG</a>(<span class="keywordtype">bool</span> on = (d_flags & mask) != 0;)
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="comment">// Update current object</span>
<a name="l00045"></a>00045 <span class="keywordflow">if</span> (setMask) d_flags = d_flags | mask;
<a name="l00046"></a>00046 <span class="keywordflow">else</span> d_flags = d_flags & ~mask;
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <a class="code" href="classCVC3_1_1ContextObjChain.html">ContextObjChain</a>** lastPtr = &d_restore;
<a name="l00049"></a>00049 <a class="code" href="classCVC3_1_1CDFlags.html">CDFlags</a>* pastFlags;
<a name="l00050"></a>00050 <a class="code" href="classCVC3_1_1Scope.html">Scope</a>* lastScope = d_scope;
<a name="l00051"></a>00051 <span class="keywordtype">bool</span> done = <span class="keyword">false</span>;
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="comment">// Update past objects</span>
<a name="l00054"></a>00054 <span class="keywordflow">while</span> (<span class="keyword">true</span>) {
<a name="l00055"></a>00055 pastFlags = (<a class="code" href="classCVC3_1_1CDFlags.html">CDFlags</a>*)((*lastPtr)->d_data);
<a name="l00056"></a>00056 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(pastFlags != NULL, <span class="stringliteral">"expected non-NULL data"</span>);
<a name="l00057"></a>00057 <span class="keywordflow">if</span> (pastFlags->d_scope-><a class="code" href="classCVC3_1_1ContextObj.html#abf9828c2d05c7d48a55827ae4c117b91">level</a>() >= scope) {
<a name="l00058"></a>00058 <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))
<a name="l00059"></a>00059 || (!on && !(pastFlags-><a class="code" href="classCVC3_1_1CDFlags.html#a8d203d30ebfb2164c0172a5f9ba6acba">d_flags</a> & mask)),
<a name="l00060"></a>00060 <span class="stringliteral">"Expected no change in flag since scope"</span>);
<a name="l00061"></a>00061 <span class="keywordflow">if</span> (setMask) {
<a name="l00062"></a>00062 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;
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064 <span class="keywordflow">else</span> {
<a name="l00065"></a>00065 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;
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067 <span class="keywordflow">if</span> (pastFlags->d_scope-><a class="code" href="classCVC3_1_1ContextObj.html#abf9828c2d05c7d48a55827ae4c117b91">level</a>() == scope) {
<a name="l00068"></a>00068 done = <span class="keyword">true</span>; <span class="keywordflow">break</span>;
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070 lastScope = pastFlags->d_scope;
<a name="l00071"></a>00071 } <span class="keywordflow">else</span> <span class="keywordflow">break</span>;
<a name="l00072"></a>00072 lastPtr = &((*lastPtr)->d_restore);
<a name="l00073"></a>00073 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(*lastPtr != NULL, <span class="stringliteral">"Should always be object at scope 0"</span>);
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075 <span class="keywordflow">if</span> (done) <span class="keywordflow">return</span>;
<a name="l00076"></a>00076
<a name="l00077"></a>00077 <span class="comment">// No past object exists at the target scope: create one</span>
<a name="l00078"></a>00078 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(lastScope != NULL &&
<a name="l00079"></a>00079 lastScope-><a class="code" href="classCVC3_1_1Scope.html#ad5c67e42cab76cf985c2aff1fab5f16e">level</a>() > scope,
<a name="l00080"></a>00080 <span class="stringliteral">"Expected lastScope to be above target scope"</span>);
<a name="l00081"></a>00081 <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>();
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <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>());
<a name="l00084"></a>00084
<a name="l00085"></a>00085 pastFlags->d_scope = lastScope;
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <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>())
<a name="l00088"></a>00088 <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>);
<a name="l00089"></a>00089 (*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;
<a name="l00090"></a>00090 lastScope-><a class="code" href="group__Context.html#ga3fcf473cd27da6c7498f462650f75ac8" title="Called by ContextObj when created.">addToChain</a>(obj);
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="comment">// Update newly created past object</span>
<a name="l00093"></a>00093 <span class="keywordflow">if</span> (setMask) {
<a name="l00094"></a>00094 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;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096 <span class="keywordflow">else</span> {
<a name="l00097"></a>00097 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;
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100 }
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