[cfe-dev] Headers from C++ standard

[Eric Liu via cfe-dev]

Hi Ben, thanks for the reply! We'd like to keep the symbol information
synchronized with the standard, so synopses from standard would be
preferred.

On Mon, May 9, 2016 at 3:34 PM Craig, Ben via cfe-dev <
cfe-dev at lists.llvm.org> wrote:

> I don't know if this is 'correct' enough, but the libcxx headers that
> correspond to standards defined headers usually (maybe always?) have a
> comment at the top that is basically the standard synopsis.  There are some
> things in the header comment that aren't in the standard synopsis, such as
> '// C++14' and '// C++17' comments.  But maybe it's good enough for what
> you are looking for?
>
> On 5/9/2016 8:30 AM, Eric Liu via cfe-dev wrote:
>
> Hi Richard,
>
> *Background*: I am writing a tool to retrieve all symbols and its
> information from C++ standard library for #include_fixer (a tool that can
> automatically find the right #include headers for unidentified symbols in
> C++ code). My current solution is running FindAllSymbol
> <http://reviews.llvm.org/D19482> tool across all C++ standard headers in
> the system include path, e.g. header files under */usr/include/c++/4.8.4/*
> directory in my own machine. However, this solution can be problematic
> since there can be multiple headers that export the same symbol. For
> example, "vector" can be #include'd via either <algorithm> or <queue>
> besides <vector> itself.
>
> As an alternative, we are thinking about parsing header synopses from C++
> standard. So, we are wondering if there are existing syntax-correct header
> synopses in the form of C++ header files somewhere that we can use. If not,
> Manual(@klimek) suggests that maybe we could have the header synopses as
> C++ header files and have the standard draft includes them so that syntax
> can be easily checked, and we can conveniently parse the synopses too.
>
> Regards,
> Eric
>
>
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