[cfe-dev] IdentifierResolver::IdDeclInfo and IdentifierResolver::iterator relations

[Vladimir Voskresensky via cfe-dev]

Could some one advise, please.

Thanks!
Vladimir.

On 16.03.2017 08:54, Vladimir Voskresensky via cfe-dev wrote:
> Dear Clang Developers,
>
> clang::IdentifierResolver::iterator has a field 'Ptr' with a comment
>     /// Ptr - There are 3 forms that 'Ptr' represents:
>     /// 1) A single NamedDecl. (Ptr & 0x1 == 0)
>     /// 2) A IdDeclInfo::DeclsTy::iterator that traverses only the 
> decls of the
>     ///    same declaration context. (Ptr & 0x3 == 0x1)
>     /// 3) A IdDeclInfo::DeclsTy::iterator that traverses the decls of 
> parent
>     ///    declaration contexts too. (Ptr & 0x3 == 0x3)
>     uintptr_t Ptr;
>
> But I could not figure out where 3rd representation is used in Clang 
> codebase.
>
> clang::IdentifierResolver::toIdDeclInfo method unmask only the last bit.
>
> So, where can I find the usage of (Ptr & 0x3 == 0x3)?
>
> Thanks!
> Vladimir.
>
>
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