Re: [sigc] ANNOUNCE: libsigc++ 1.9.12 (aka libsigc++ 2.0 beta 1)

[Roel Vanhout <roel riks nl>]

Ok I'm back from my week training so I had a chance to check 1.9.12 with 
Visual Studio.

First off, I could see in the changelog that the Visual Studio project 
files should be in 1.9.12 but they were not in the tarball that I 
downloaded. So I just copied over the old files that I had.

8 of the test succeed, 10 still fail. One of the problems is that in 
adaptor_trait.h it says

#ifdef MSVC
#define LIBSIGC_TEMPLATE_PREFIX
#else
#define LIBSIGC_TEMPLATE_PREFIX template
#endif

But 'MSVC' isn't necessarily defined on the vc compiler; I changed the 
first line to

#ifdef _MSC_VER

and then 14 tests succeeded and only 4 still failed. Those 4 all use 
bind.h (test_size, test_functor_trait, test_compatibility and test_bind) 
so I think it is safe to assume that this error is the last one left.

The problem is still in

template <int I_location, class T_bound1, class T_bound2, class T_functor>
inline bind_functor<I_location, typename unwrap_reference<T_bound1>::type,
       bind_functor<I_location?I_location+1:0, typename 
unwrap_reference<T_bound2>::type, T_functor> >
bind(const T_functor& _A_functor, T_bound1 _A_b1, T_bound2 _A_b2)
{
  return bind_functor<I_location, typename 
unwrap_reference<T_bound1>::type,
         bind_functor<I_location?I_location+1:0, typename 
unwrap_reference<T_bound2>::type, T_functor> >
           (bind<I_location?I_location+1:0>(_A_functor, _A_b2), _A_b1);
}

The error is

c:\test\libsigc++-1.9.12\sigc++\adaptors\bind.h(507) : error C2143: 
syntax error : missing ',' before '<end Parse>'

(documentation for this error says:
syntax error : missing 'token1' before 'token2'

The compiler expected a specific token (a language element other than 
white space) and found another token instead.)

That's all for now.


cheers,

roel



Martin Schulze wrote:

> *** libsigc++ 2.0 (beta)
>
> libsigc++ implements a typesafe callback system for standard C++. It
> allows you to define signals and to connect those signals to any
> callback function, either global or a member function, regardless of
> whether it is static or virtual.
>
> libsigc++ is used by gtkmm to wrap the GTK+ signal system. It does not
> depend on GTK or gtkmm.
>
> libsigc++ 2.0 uses modern C++ mechanisms to achieve a highly flexible,
> yet typesafe callback system. It supports all features of libsigc++ 1.2
> and improves upon it with a simpler and more powerful API. The old API
> is preserved by means of a deprecated compatibility module.
>
> In particular the API improvements from libsigc++ 1.2 to 2.0 include:
> * Provides unnumbered signal and slot templates.
> * Supports arbitrary functor types.
> * Supports implicit argument type conversions on signal emission.
> * Adds support for overloaded functions.
> * Borrows powerful accumulator interface from boost::signal.
> * Simplifies use of adaptors: argument types need not be specified any
>   more (except for sigc::retype_return()).
> * More powerful adaptors: position of arguments to hide or bind can
>   be chosen freely.
> * Adds two useful adaptors: sigc::compose(), sigc::exception_catch().
> * Adds all-in-one operator sigc::group() with support for lambdas
>   featuring a complete set of lambda selectors and lambda operators.
> * Highly optimizable: performs only one indirect function call during
>   slot invokation independant of the number of adaptors used.
> * Conforms to the STL naming scheme: only uses small letters.
>
>
> *** Prerequisits
>
> Compatible compilers must supports the following recent c++ techniques:
> * Partial template (function) specialization.
> * Arithmetics in template arguments.
> * Explicit template (member) function instantiation.
> * Treat void return as normal return.
>
>
> *** Changes:
>
> 1.9.12:
>
> This is the first beta release of libsigc++ 2.0. No more API additions
> should be made. Future work concentrates on supporting more compilers,
> bug hunting and finishing the documentation. Changes in this release:
> * Added adaptor retype(). With this final API addition all adaptors
>   are in place that are available in libsigc++-1.2.
> * Added negation lambda operator. Use STL names for lambda actions.
> * Remove formerly disabled support for gcc extension typeof().
> * Added project files for MS Visual Studio .Net 2003. (Roel Vanhout)
> * Make libsigc++2 compile with .Net 2003. (Roel Vanhout,Martin Schulze)
> * Build shared version of libsigc++2 by default. (Cedric Gustin)
> * Add support for win32 platform. (Cedric Gustin)
> * Install .m4 files. (requested by Ron Steinke)
> * Cleaned up functors .m4 files for ptr_fun() and mem_fun().
> * Restructured and completed documentation of the core library parts.
>
>
> *** Download:
>
> libsigc++ is available for download here:
> http://libsigc.sourceforge.net/
>
> A reference documentation for libsigc++ 2.0 can be found here:
> http://libsigc.sourceforge.net/libsigc2/docs/
>
>
> *** Known issues:
>
> * This release has only been tested with gcc-3.2. It should also
>   compile with:
>   - gcc-3.3, gcc-3.3.x
>   - cygwin (gcc >= 3.2)
>   - mingw32
>   - Microsoft Visual Studio .Net 2003
>   - Sun Forte C++ compiler
>   Please report any troubles you encounter with these compilers!
>   You are also invited to try a different compiler.
>
> * When the compatibility module is used with "using namespace SigC",
>   gcc-3.2 reports conflicts of SigC::slot() with struct sigc::slot.
>   A hackish work-around has been disabled to support the .Net compiler.
>
> * Adaptors are not documented, yet.
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