+;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name: kmr-mop.lisp
+;;;; Purpose: MOP support for multiple-implementions
+;;;; Programmer: Kevin M. Rosenberg
+;;;; Date Started: Apr 2003
+;;;;
+;;;; $Id: mop.lisp 8573 2004-01-29 23:30:50Z kevin $
+;;;;
+;;;; This file was extracted from the KMRCL utilities
+;;;; *************************************************************************
+
+;;; This file imports MOP symbols into the USQL-MOP package and then
+;;; re-exports into CLSQL-USQL-SYS them to hide differences in
+;;; MOP implementations.
+
+(in-package #:clsql-usql-sys)
+
+#+lispworks
+(defun intern-eql-specializer (slot)
+ `(eql ,slot))
+
+(defmacro process-class-option (metaclass slot-name &optional required)
+ #+lispworks
+ `(defmethod clos:process-a-class-option ((class ,metaclass)
+ (name (eql ,slot-name))
+ value)
+ (when (and ,required (null value))
+ (error "metaclass ~A class slot ~A must have a value" (quote ,metaclass) name))
+ (list name `',value))
+ #-lispworks
+ (declare (ignore metaclass slot-name required))
+ )
+
+(defmacro process-slot-option (metaclass slot-name)
+ #+lispworks
+ `(defmethod clos:process-a-slot-option ((class ,metaclass)
+ (option (eql ,slot-name))
+ value
+ already-processed-options
+ slot)
+ (list* option `',value already-processed-options))
+ #-lispworks
+ (declare (ignore metaclass slot-name))
+ )
+