[cfe-dev] bool type is represented as "_Bool" in the AST

[Pradeep Kumar via cfe-dev]

Dear Aaron,
   For the sake of clarity, I have detailed about the case in here
<https://gist.github.com/schwarzschild-radius/8986bd5dc734183727291b3f3aae4c53>.
I just want to know is this the expected behavior from the tool.

Regards,
Pradeep


Gist link:
https://gist.github.com/schwarzschild-radius/8986bd5dc734183727291b3f3aae4c53

On Tue, Jul 23, 2019 at 10:01 PM Aaron Ballman <aaron at aaronballman.com>
wrote:

> On Tue, Jul 23, 2019 at 12:24 PM Pradeep Kumar <pradeepisro49 at gmail.com>
> wrote:
> >
> > Dear Aaron,
> >    How do I set it from command line? I am remeber setting the language
> standard as -std=c++17 in the clangTool.
>
> You don't change it via the command line. If you set the language mode
> to C++ in Clang, it should always print as bool automatically. See
> CompilerInvocation::setLangDefaults(), where it sets the values for
> the LangOptions object used to make printing policies. If you're not
> executing Clang, we need more information about how you are setting up
> the tool to be able to help.
>
> ~Aaron
>
> >
> > Regards,
> > Pradeep
> >
> > On Tue, Jul 23, 2019 at 8:48 PM Aaron Ballman <aaron at aaronballman.com>
> wrote:
> >>
> >> On Tue, Jul 23, 2019 at 11:12 AM Pradeep Kumar <pradeepisro49 at gmail.com>
> wrote:
> >> >
> >> > Dear Aaron,
> >> >     Why is it set to "_Bool" by default?
> >>
> >> It seems to get its default value from LangOptions::Bool, which I
> >> believe is set automatically by the language standard mode.
> >>
> >> > How do I change it?
> >>
> >> Usually you do this by making a copy of an existing PrintingPolicy
> >> object and modifying it.
> >>
> >> PrintingPolicy PP(WhateverPrintingPolicyYouWereUsing);
> >> PP.Bool = 1;
> >>
> >> Then pass PP into the call to getAsString().
> >>
> >> ~Aaron
> >>
> >> >
> >> > Regards,
> >> > Pradeep
> >> >
> >> > On Tue, Jul 23, 2019 at 8:32 PM Aaron Ballman <aaron at aaronballman.com>
> wrote:
> >> >>
> >> >> On Tue, Jul 23, 2019 at 10:47 AM Pradeep Kumar via cfe-dev
> >> >> <cfe-dev at lists.llvm.org> wrote:
> >> >> >
> >> >> > Dear Clang-developer community,
> >> >> >     I am using libTooling to query information about the source.
> While querying the string representation of the bool type, I get "_Bool"
> string. I got the string from QualType::getAsString(). Should I be using
> another function to query the actual type or is it an expected behavior?
> >> >> >
> >> >> >     I don't get _Bool when dumping the ast except when I dump the
> QualType Node.
> >> >>
> >> >> The PrintingPolicy::Bool member dictates this behavior.
> >> >>
> >> >> ~Aaron
> >> >>
> >> >> >
> >> >> > clang Version: 9.0
> >> >> > LLVM Version: 9.0
> >> >> >
> >> >> > Regards,
> >> >> > Pradeep
> >> >> > _______________________________________________
> >> >> > cfe-dev mailing list
> >> >> > cfe-dev at lists.llvm.org
> >> >> > https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev
>
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