[cfe-dev] RecursiveASTVisitor: How to traverse all FieldDecl in a CXXRecordDecl?

[Yafei Liu via cfe-dev]

Maybe you can try `CXXRecordDecl::fields()`?

On Tue, Dec 1, 2020 at 10:59 PM Adam McLaughlin via cfe-dev <
cfe-dev at lists.llvm.org> wrote:

> Depending on the context of your program you can either try to 1) traverse
> the fields within VisitCXXRecordDecl() or 2) use the FieldDecl::getParent()
> method within VisitFieldDecl() to figure out which CXXRecordDecl the
> FieldDecl belongs to (if any).
>
> -Adam
>
> On Mon, Nov 30, 2020 at 5:18 PM Robinson, Paul via cfe-dev <
> cfe-dev at lists.llvm.org> wrote:
>
>>
>>
>> > -----Original Message-----
>> > From: cfe-dev <cfe-dev-bounces at lists.llvm.org> On Behalf Of Marcel
>> > Schaible via cfe-dev
>> > Sent: Monday, November 30, 2020 11:49 AM
>> > To: cfe-dev at lists.llvm.org
>> > Subject: [cfe-dev] RecursiveASTVisitor: How to traverse all FieldDecl
>> in a
>> > CXXRecordDecl?
>> >
>> > Hi,
>> >
>> > I have  simple RecursiveASTVisitor, which should handle definition of
>> > structs and their fields.
>> >
>> >
>> > How can I traverse over all FieldDecl in a given CXXRecordDecl?
>> >
>> > Because of the sequence the AST is traversed, I don't know in a
>> > VisitFieldDecl approach to which CXXRecordDecl it belongs to.
>>
>> I don't know anything about RecursiveASTVisitor so there might be
>> a way to do what you want there.  If you need to traverse the AST
>> "manually" there's code in clang/lib/CodeGen/CGDebugInfo.cpp (look
>> for CGDebugInfo::CollectRecordFields) that could be instructive.
>> Note that a VarDecl describes a static data member, while a
>> FieldDecl describes a normal data member.
>>
>> --paulr
>>
>> >
>> > I hope I have stated my problem understandable..-
>> >
>> >
>> > Thanks
>> >
>> > Marcel
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