Unable to create bindings to SDL Events

Issue #23 resolved
Leonard Ritter
created an issue

CFFI's current limitation of not being able to pass unions as arguments to functions makes it impossible to create bindings for SDL. A core aspect of the library is event handling, and its absence renders SDL worthless.

See here for the offending headers: http://www.libsdl.org/tmp/SDL-1.3-docs/SDL__events_8h-source.html

the union in question is SDL_Event, which is passed to a handful of core functions, of which SDL_PollEvent() is the most important one, because it is needed to write message loops (see http://www.cs.clemson.edu/~malloy/courses/3dgames-2007/tutor/web/sdl_setup/sdl_setup.html for an example).

the exception is raised during verify(), and reads as such:


File "/home/lritter/devel/pypy/site-packages/cffi-0.3-py2.7.egg/cffi/api.py", line 269, in verify return self.verifier.load_library() File "/home/lritter/devel/pypy/site-packages/cffi-0.3-py2.7.egg/cffi/verifier.py", line 55, in load_library self.compile_module() File "/home/lritter/devel/pypy/site-packages/cffi-0.3-py2.7.egg/cffi/verifier.py", line 42, in compile_module self._write_source() File "/home/lritter/devel/pypy/site-packages/cffi-0.3-py2.7.egg/cffi/verifier.py", line 95, in _write_source self._vengine.write_source_to_f() File "/home/lritter/devel/pypy/site-packages/cffi-0.3-py2.7.egg/cffi/vengine_gen.py", line 35, in write_source_to_f self._generate('decl') File "/home/lritter/devel/pypy/site-packages/cffi-0.3-py2.7.egg/cffi/vengine_gen.py", line 70, in _generate "not implemented in verify(): %r" % name) VerificationError: not implemented in verify(): 'union SDL_Event' }}}

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