[pclasses-devel] Initial Factory impl in CVS

[stephan b. <st...@s1...>]

include/pclasses/Factory.h

i haven't tested it, nor fully instantiated all of the template code yet 
(my build tree only halfway works), but it is syntactically okay and 
almost fully documented.

The P-side interface is essentially 3 functions:

  template <class Base>
  void P::CL::registerBase( string [, factory_func] );

  template <class Base, class SubT>
  void P::CL::registerSubtype( string [, factory_func] );

  template <class Base>
  Base * P::CL::classload( string );

Those funcs use a Factory<>::instance(). The factory uses 
P::Hook::FactoryInstanceHook<FactoryT> to provide a shared object. This 
allows clients to specialize that type to customize the object returned 
by Factory::instance(). e.g., they can add DLL support to the core API 
without the core knowing it. Clients can also specialize 
P::Hook::FactoryCreateHook<Base,Sub> to completely override the default 
new-object implementations. This is necessary when, e.g, Base is 
abstract (and therefor 'new Base' won't work). See the docs for full 
details.

i don't like the CL namespace, and may rename registerXXX() to 
P::cl_registerXXX(). Opinions?

i did a complete re-think of the s11n CL layer in this port, so there 
may be several bugs laying around.

-- 
----- st...@s1...   http://s11n.net
"...pleasure is a grace and is not obedient to the commands
of the will." -- Alan W. Watts