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60 lines
2.0 KiB
Common Lisp
60 lines
2.0 KiB
Common Lisp
;; Copyright (c) 2009 Vitaly Mayatskikh <v.mayatskih@gmail.com>
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;;
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;; This file is part of 0MQ.
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;;
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;; 0MQ is free software; you can redistribute it and/or modify it under
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;; the terms of the Lesser GNU General Public License as published by
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;; the Free Software Foundation; either version 3 of the License, or
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;; (at your option) any later version.
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;;
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;; 0MQ is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; Lesser GNU General Public License for more details.
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;;
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;; You should have received a copy of the Lesser GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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(in-package :zeromq)
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(define-condition error-again (error)
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((argument :reader error-again :initarg :argument))
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(:report (lambda (condition stream)
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(write-string (convert-from-foreign
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(%strerror (error-again condition))
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:string)
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stream))))
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(defmacro defcfun* (name-and-options return-type &body args)
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(let* ((c-name (car name-and-options))
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(l-name (cadr name-and-options))
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(n-name (cffi::format-symbol t "%~A" l-name))
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(name (list c-name n-name))
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(docstring (when (stringp (car args)) (pop args)))
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(ret (gensym)))
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(loop with opt
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for i in args
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unless (consp i) do (setq opt t)
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else
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collect i into args*
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and if (not opt) collect (car i) into names
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else collect (car i) into opts
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and collect (list (car i) 0) into opts-init
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end
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finally (return
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`(progn
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(defcfun ,name ,return-type
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,@args*)
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(defun ,l-name (,@names &optional ,@opts-init)
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,docstring
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(let ((,ret (,n-name ,@names ,@opts)))
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(if ,(if (eq return-type :pointer)
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`(zerop (pointer-address ,ret))
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`(not (zerop ,ret)))
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(cond
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((eq *errno* isys:eagain) (error 'error-again :argument *errno*))
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(t (error (convert-from-foreign (%strerror *errno*) :string))))
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,ret))))))))
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