[cfe-dev] better way to test for explicit C++ constructor?

[Kim Gräsman]

Hi Peeter,

Glad it worked, but I wonder if you could get away with just
hasUserDeclaredConstructor?
As far as I understand it, that should be the same as what you're doing
below, if you're only interested in existence.

I would trust Eli more than I trust myself, though, so take this with a
grain of salt.

- Kim

On Tuesday, December 11, 2012, Peeter Joot wrote:

> Thanks Kim, that worked nicely:
>
>          for ( CXXRecordDecl::ctor_iterator b = r->ctor_begin(), e =
> r->ctor_end() ;
>                b != e ; ++b )
>          {
>             if ( !b->isImplicitlyDefined() )
>             {
>                cout << r->getName().str() << " : CONSTRUCTOR" << endl ;
>
>                break ;
>             }
>          }
>
> and is much cleaner.
>
> Peeter
>
> CXXRecordDecl has a ctor_begin/ctor_end pair, which return iterators
>> over all constructors.
>>
>> They are of type CXXConstructorDecl, and that class in turn has an
>> isImplicitlyDefined method you can use to check whether it's
>> user-written or not.
>>
>> You should be able to loop over the RecordDecl's constructors and
>> count the ones not implicitly defined.
>>
>>
>
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