Thanks a lot!<br>Here is what I came up with (I didn't make getInstantiatedFrom a member yet):<br><br>/// getInstantiatedFrom - if the parent of this (FieldDecl* d) is an                                                                    <br>

/// instanciation of a template class, return the corresponding FieldDecl* of this                                                      <br>/// template class.                                                                                                                     <br>

FieldDecl* getInstantiatedFrom(FieldDecl const * const d)                                                                               <br>{                                                                                                                                       <br>

    ClassTemplateSpecializationDecl const * const parent =                                                                              <br>        dyn_cast<ClassTemplateSpecializationDecl>(d->getParent());                                                                      <br>

                                                                                                                                        <br>    // check the parent of this field is an instanciation of a class template                                                           <br>

    if (!parent || parent->getTemplateSpecializationKind() != TSK_ImplicitInstantiation)                                                <br>        return 0;                                                                                                                       <br>

                                                                                                                                        <br>    CXXRecordDecl const * const generic_parent =                                                                                        <br>

        parent->getSpecializedTemplate()->getTemplatedDecl();                                                                           <br>    assert(generic_parent);                                                                                                             <br>

                                                                                                                                        <br>    for(CXXRecordDecl::field_iterator f=generic_parent->field_begin(), e=generic_parent->field_end(); f != e; ++f)                      <br>

    {                                                                                                                                   <br>        if ((*f)->getNameAsString() == d->getNameAsString())                                                                            <br>

            return *f;                                                                                                                  <br>    }                                                                                                                                   <br>

                                                                                                                                        <br>    // should never get here                                                                                                            <br>

    return 0;                                                                                                                           <br>}<br><br><br>Is it what you had in mind? I would be glad to make it a patch and add some tests it it seems ok.<br>

<br>Adrien      <br><br><div class="gmail_quote">On Fri, May 27, 2011 at 23:34, Douglas Gregor <span dir="ltr"><<a href="mailto:dgregor@apple.com">dgregor@apple.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">

<div><div></div><div class="h5"><br>
On May 27, 2011, at 2:32 PM, Johannes Schaub (litb) wrote:<br>
<br>
> Douglas Gregor wrote:<br>
><br>
>><br>
>> On May 27, 2011, at 10:02 AM, Adrien Chauve wrote:<br>
>><br>
>>> Hi,<br>
>>><br>
>>> Using a RecursiveASTVisitor, I've been trying to rename field names<br>
>>> against some conventions.<br>
>>><br>
>>> Let's say I would like to rename Foo::bar into Foo::m_bar in the<br>
>>> following code:<br>
>>><br>
>>> template<typename T><br>
>>> struct Foo<br>
>>> {<br>
>>>    int bar;<br>
>>> };<br>
>>><br>
>>> int main()<br>
>>> {<br>
>>>    Foo<double> foo;<br>
>>>    foo.bar = 2;<br>
>>><br>
>>>    return 1;<br>
>>> }<br>
>>><br>
>>><br>
>>> In my custom visitor, I implement the following method:<br>
>>><br>
>>> bool VisitMemberExpr(MemberExpr* member)<br>
>>> {<br>
>>>    ValueDecl* v = member->getMemberDecl(); // FieldDecl or CXXMethodDecl<br>
>>>    ...<br>
>>> }<br>
>>><br>
>>> But the FieldDecl I get when visiting the statement corresponding to<br>
>>> "foo.bar=2;" is Foo<double>::bar, but not Foo::bar.<br>
>>><br>
>>> So my question is: is it possible to get the FieldDecl of Foo<T>::bar<br>
>>> from the FieldDecl of Foo<double>::bar ? at least when the struct is not<br>
>>> specialized? What happens when the struct is specialized?<br>
>><br>
>> For fields, this is a pain. You'll actually have to look at the type that<br>
>> owns the field (a ClassTemplateSpecializationDecl), check whether it was<br>
>> instantiated vs. specialized (using getSpecializationKind()) and, if it<br>
>> was instantiated, retrieve the class template from which is was<br>
>> instantiated (getSpecializedTemplate()).<br>
>><br>
><br>
> I was looking into the doxygen documentations, and I couldn't find how to<br>
> proceed from that.<br>
><br>
> How to get the correct field decl of the class template that correspond to<br>
> the field decl of the instantiated specialization? Can one just take the<br>
> std::distance of the field decl iterator for the specialization, and with<br>
> that, index into the field decl iterator of the class template?<br>
<br>
</div></div>That works, or you can use name lookup.<br>
<br>
        - Doug<br>
<div><div></div><div class="h5"><br>
_______________________________________________<br>
cfe-dev mailing list<br>
<a href="mailto:cfe-dev@cs.uiuc.edu">cfe-dev@cs.uiuc.edu</a><br>
<a href="http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev" target="_blank">http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev</a><br>
</div></div></blockquote></div><br>