I know it is very much OT (sorry :) ), but I could not pass the chance for some self-promotion :) :)
Check this out: http://defenum.sourceforge.net Cheers — MA > On Jan 13, 2016, at 22:26 , Attila Lendvai <att...@lendvai.name> wrote: > > on my quest to implement an automatic generator for CFFI bindings > (using c2ffi), i've recorded some patches that change the semantics of > enums and bitfields. > > automatically generated bindings (should) live in an empty lisp > package, and to avoid surprises it's also desirable to bring the CFFI > behavior (regarding e.g. C namespaces) as close to C as possible. > > the code is available in this PR: https://github.com/cffi/cffi/pull/84 > > the following are controversial and i'd welcome some input on them > from CFFI gurus, especially regarding what should/could get into > master eventually: > > - enums don't demand member names to be CL:KEYWORDP anymore > > - DEFCENUM and DEFBITFIELD now expand a toplevel DEFCONSTANT for > each member. the rationale is to bring it closer to the C enum > semantics where they are in the main namespace. > > - BITFIELD now inherit from ENUM, and adds extra semantics for values > that are the power of two. but should 0 be treated as a bitfield > bitmask? IOW, should (FOREIGN-BITFIELD-SYMBOLS 'FOO 0) return NIL > or '(ZERO-MEMBER-NAME)? the code currently does not treat 0 as a > bitmask (which is an incompatible change). > > - the accessor names are rather inconsistent: > FOREIGN-ENUM-VALUE FOREIGN-BITFIELD-VALUE > FOREIGN-ENUM-KEYWORD FOREIGN-BITFIELD-SYMBOLS > FOREIGN-ENUM-KEYWORD-LIST FOREIGN-BITFIELD-SYMBOL-LIST > i'd like to rename the last four of them to (not done yet): > FOREIGN-ENUM-KEY FOREIGN-BITFIELD-KEYS > FOREIGN-ENUM-KEY-LIST FOREIGN-BITFIELD-KEY-LIST > and leave some aliases and deprecation warnings behind. but are the > names ok? or any better ideas? > > - another minor issue is that 'bitfield' is a confusing name, because > the C standard calls the 'int:3' kind of types as bitfields. i > suggest to rename them to 'bitmask' in CFFI. maybe incompatibly? or > only in a new major version? > > it'd be nice if this could be merged before the next quicklisp > release, because there are some projects that depend on them that i'd > like to get into ql the sooner the better. > > thanks, and happy hacking, > > -- > • attila lendvai > • PGP: 963F 5D5F 45C7 DFCD 0A39 > -- > “The cost of sanity in this society, is a certain level of alienation.” > — Terence McKenna (1946–2000) -- Marco Antoniotti
