Automatic using ::rtl::OUString etc.
bjoern.michaelsen at canonical.com
Fri Apr 13 01:13:43 PDT 2012
On Fri, Apr 13, 2012 at 08:21:35AM +0200, Stephan Bergmann wrote:
> On 04/12/2012 03:59 PM, Lubos Lunak wrote:
> > would somebody see a problem with this?
> >sal/inc/rtl/ustring.hxx :
> >+#ifdef RTL_AUTOMATIC_USING
> >+using ::rtl::OUString;
> >+using ::rtl::OStringToOUString;
> >+using ::rtl::OUStringToOString;
> I am not too excited about this.
> For one, we need to ensure that none of the URE published interface
> implicitly relies on -DRTL_AUTOMATIC_USING. (And it is not clear to
> me that compiling the sal library with -URTL_AUTOMATIC_USING could
> even catch all problems in sal headers.)
> For another, it increases accidental complexity (an ifdef block; yet
> another -D always passed in) for IMO little gain.
> And for a third, it introduces a magic special case (certain names
> from the rtl namespace can be used without qualification; without
> this being evident from the C++ source code itself, as it relies on
> .mk file behavior; but there is an exception, that this special case
> must not be used in certain headers).
I tend to agree on all points. If something like that is essential, we could
have something like a:
and allow that to be used in .cxx only but not in .hxx. Then again the gain is
limited by that and its not automatically checkable without some ugly extra
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