What are the ramifications of the anonymous type stuff? In particular, does this mean that defctype behaves more like C's "typedef" (in that the source type doesn't yet need to be defined)? Could any of the new type system changes achieve that result? The dependence of defctype on having its source type already defined makes handling automatic declaration generation quite complicated in a lot of idiomatic C code. Since the dependence graph of C type definitions might have cycles, it becomes impossible to impose a total ordering on definitions. This isn't a problem when typedefs are fully resolved to their target types (as Verrazano does currently), but is a problem if you want the C-FFI binding to more closely resemble the C header file with regards to type naming.

On 8/26/05, Luis Oliveira <luismbo@gmail.com> wrote:
Hello,

Here's the Changelog for the new changes to my branch since my last
update:

Fri Aug 26 15:47:08 WEST 2005  Luis Oliveira <loliveira@common-lisp.net >
   * Type system improvements and more.

   - New tests: tests/enums.lisp (4 tests) and tests/misc-types.lisp (3
tests).
   - New file: objects.lisp, skeleton of the safe typed pointer
interface. I
     also added a :boolean type here, it's looking for a better home
still.
   - (early-types.lisp): type parsers, DEFINE-TYPE-SPEC-PARSER and
PARSE-TYPE.
     Added abbility to have anonymous types (ie. a name is no longer
required
     for FOREIGN-TYPE). Moved DEFCTYPE to types.lisp.
   - (enum.lisp): improved DEFCENUM, the values for each keyword are now
     optional, like in C. Added the anonymous type (:enum ...)
   - ( types.lisp):
       - Renamed :TO-C-ARG to :TO-C-DYNAMIC.
       - Renamed FOREIGN-AREF to MEM-AREF and implemented compiler macros
         for it.
       - New exported macro: DEFINE-FOREIGN-TYPE for parameterized types.
       - Change DEFINE-TYPE-TRANSLATOR back to the previous interface,
         translators take aow and we have translators
         available at runtime now too.
       - FOREIGN-TYPEDEF's now inherit their parent type's translators.
       - New :wrapper type, for anonymous typedefs with translators.
   - (strings.lisp): Renamed string to :string. Added new type,
:string+ptr.
   - (utils.lisp): renamed let-if to bif.
   - (tests/callbacks.lisp): two tests were not being run for SBCL
     because I thought it triggered a bug but it's actually only one that
     triggers the bug. Fixed that.
   - Updated examples and tests to use :string instead of string.

Sun Aug 21 14:35:13 WEST 2005  Luis Oliveira < loliveira@common-lisp.net>
   * A couple of minor changes.

   - Move #-cffi/no-foreign-funcall from cffi-tests.asd to
     tests/funcall.lisp and have the lisps that don't support this
     push the feature in cffi-<lisp>.lisp instead of defpackage.
   - New file: utils.lisp
   - Make Allegro, CMUCL, Corman and OpenMCL use callback-symbol-name
     (from cffi-utils) to safely intern callback symbol.
   - Clisp: consider (pointerp NIL) => T

Thu Aug 11 05:43:53 WEST 2005  Luis Oliveira <loliveira@common-lisp.net>
   * Clisp: use FOREIGN-ADDRESS-NULL in NULL-PTR-P

Wed Aug 10 02:00:07 WEST 2005  Luis Oliveira <loliveira@common-lisp.net>
   * Lispworks: use :byte for cffi's :char types

--
Luís Oliveira
http://student.dei.uc.pt/~lmoliv/
Equipa Portuguesa do Translation Project
http://www2.iro.umontreal.ca/~pinard/po/registry.cgi?team=pt
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