<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Nov 11, 2013 at 2:04 AM, Pedro Delgado Perez <span dir="ltr"><<a href="mailto:pedro.delgado@uca.es" target="_blank" class="cremed">pedro.delgado@uca.es</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<p>Well, using as reference what you named of <span style="font-family:Arial,sans-serif"><span style="white-space:nowrap"><span style="font-family:Arial,sans-serif"><span style="white-space:nowrap">Sema::</span></span>CheckUsingDeclQualifier, </span></span>I tried the following;</p>
<p>DeclarationMatcher I_Matcher = recordDecl().bind("var");</p>
<p>class HVD : public MatchFinder::MatchCallback {<br>public :<br><br> llvm::SmallPtrSet<const CXXRecordDecl*, 4> Bases;<br> <br>
static bool collect(const CXXRecordDecl *Base, void *OpaqueData) {<br> HVD *Data = reinterpret_cast<HVD*>(OpaqueData);<br> Data->Bases.insert(Base);<br> return true;<br> }<br>
<br> virtual void run(const MatchFinder::MatchResult &Result) {<br>
... ....<br>
if (const CXXRecordDecl *FS = Result.Nodes.getNodeAs<clang::CXXRecordDecl>("var")){<br>
if(FS->forallBases(collect, this)){<br>
for(llvm::SmallPtrSet<const CXXRecordDecl*, 4>::const_iterator i = Bases.begin(); i != Bases.end(); i++){<br>
... ... <br>
}<br>
}<br>
}<br>
}<br>
};</p>
<p>1 - To tell you the truth, I have no idea what I have to do with OpaqueData. Is what I put above correct?<br></p></div></blockquote><div>The OpaqueData part seems correct. <br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><p>
2 - I got an error doing this and I can't understand the problem.</p>
<p>IHD_operator: /home/pedro/clang-llvm/llvm/tools/clang/include/clang/AST/DeclCXX.h:558: const clang::CXXRecordDecl::DefinitionData& clang::CXXRecordDecl::data() const: Assertion `DefinitionData && "queried property of class with no definition"' failed.<br>
Stack dump:<br>0. <eof> parser at end of file</p></div></blockquote><div>As per its comment, forallBases needs to be called on a CXXRecordDecl that is a definition (not e.g. a forward declaration or an injected class name). Thus, you will need to ensure that FS->getDefinition() is not NULL and then call it on that.<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>
<p>3. Once inside the for loop, how can I get each object CXXRecordDecl through <a href="http://llvm.org/docs/doxygen/html/classllvm_1_1SmallPtrSetIterator.html#ac931fc62430140f2cce08d72e5f27c82" target="_blank" class="cremed">SmallPtrSetIterator.</a></p>
</div></blockquote><div>I think you just need to dereference it:<br></div><div><br></div><div>const CXXRecordDecl *Base = *i;</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<p>Thanks for your time,</p>
<p>Pedro.</p></div></blockquote><div>No problem, I hope this helps,</div><div>Daniel</div><div> <br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>
<div><em>El día 08 nov 2013 18:30, Daniel Jasper <<a href="mailto:djasper@google.com" target="_blank" class="cremed">djasper@google.com</a>> escribió:</em></div><div><div class="h5"><blockquote style="border-left:2px solid #000083;margin:0pt 0pt 0pt 0.8ex;padding-left:1ex">
<div dir="ltr">Yes, sorry, lookupInBases() is what I meant. You'll need forAllBases(). You can pass in a ForallBasesCallback, which is basically a callback function executed for each base class.<div>I have not used this myself, but for an example, look at:</div>
<div>CXXRecordDecl::isProvablyNotDerivedFrom defined in <span style="white-space:nowrap;font-family:Arial,sans-serif">lib/AST/CXXInheritance.cpp.</span></div><div><span style="white-space:nowrap;font-family:Arial,sans-serif"><br>
</span></div><div><span style="white-space:nowrap;font-family:Arial,sans-serif">Also </span><span style="font-family:Arial,sans-serif"><span style="white-space:nowrap">lib/Sema/SemaDeclCXX.cpp has an example close to the bottom of Sema::CheckUsingDeclQualifier()</span></span></div>
<div><span style="font-family:Arial,sans-serif"><span style="white-space:nowrap">that collects all of the bases into a SmallPtrSet.</span></span></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Nov 8, 2013 at 9:16 AM, Pedro Delgado Perez <span dir="ltr"><<a href="mailto:pedro.delgado@uca.es" target="_blank" class="cremed">pedro.delgado@uca.es</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><p>Hi,</p>
<p>Thanks Daniel, I suppose you mean CXXRecordDecl::lookupInBases() instead CXXRecordDecl::findInBases().</p>
<p>Have you ever used one of these methods? I don't understand quite well how can I use them for my purpose. What I need is that, given an object CXXRecordDecl, I can analyze something in particular in each one of its base classes (direct or indirect). Thus, I need to get each one of these classes to process them, but the methods you refer only return a <em>bool</em>.</p>
<p>Could you please show me an example using these methods? Mainly, with respect the arguments passed to these methdos.</p>
<p>Thanks,</p>
<p>Pedro.</p>
<div><em>El día 08 nov 2013 15:32, Daniel Jasper <<a href="mailto:djasper@google.com" target="_blank" class="cremed">djasper@google.com</a>> escribió:</em></div><div><div><blockquote style="border-left:2px solid #000083;margin:0pt 0pt 0pt 0.8ex;padding-left:1ex">
<div dir="ltr">Take a look at CXXRecordDecl::forallBases() and CXXRecordDecl::findInBases(). Dependent on what you want to do, one of them might do what you need.<div>Cheers,<br>Daniel</div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Fri, Nov 8, 2013 at 2:39 AM, Pedro Delgado Perez <span dir="ltr"><<a href="mailto:pedro.delgado@uca.es" target="_blank" class="cremed">pedro.delgado@uca.es</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><p>Hello,</p>
<p>Please, I need some help with an issue I noticed a few days ago and I am not able to solve.</p>
<p>To illustrate my problem, I show this piece of code:</p>
<p>class A{<br> public:<br> A(): a(1) {};<br> int a;<br>};<br><br>class B: public A{<br> public:<br> B(): b(2){};<br> int b;<br>};<br><br>class C: public B{<br> public:<br> C(): c(3){};<br>
int b;<br> int a;<br>};</p>
<p>We have three classes, where:<br>B inherits directly from A<br>C inherits directly from B and INDIRECTLY from A</p>
<p>Using CXXRecordDecl::base_class_iterator, the classes indirectly inherited are not visited. Please, can someone explain me how to take into account these indirectly inherited base classes? I've been thinking on recursion (use base_class_iterator on each class directly inherited), but I'm sure there should be another simpler way to do this.</p>
<p>Thanks in advance,</p>
<p>Pedro.</p>
</div><br>
<p>_______________________________________________<br>cfe-dev mailing list<br><a href="mailto:cfe-dev@cs.uiuc.edu" target="_blank" class="cremed">cfe-dev@cs.uiuc.edu</a></p>
</blockquote></div></div><p><a href="http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev" target="_blank" class="cremed">http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev</a></p>
</blockquote></div></div></div></blockquote></div><br>
</div></blockquote>
</div></div></div>
</blockquote></div><br></div></div>