sql/kmr-mop.lisp

   1 ;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10 -*-
   2 ;;;; *************************************************************************
   3 ;;;; FILE IDENTIFICATION
   4 ;;;;
   5 ;;;; Name:          kmr-mop.lisp
   6 ;;;; Purpose:       MOP support for multiple-implementions
   7 ;;;; Programmer:    Kevin M. Rosenberg
   8 ;;;; Date Started:  Apr 2003
   9 ;;;;
  10 ;;;; $Id$
  11 ;;;;
  12 ;;;; This file imports MOP symbols into the CLSQL-MOP package and then
  13 ;;;; re-exports into CLSQL-SYS them to hide differences in
  14 ;;;; MOP implementations.
  15 ;;;;
  16 ;;;; This file was extracted from the KMRCL utilities
  17 ;;;; *************************************************************************
  18
  19 (in-package #:clsql-sys)
  20
  21 #+lispworks
  22 (defun intern-eql-specializer (slot)
  23   `(eql ,slot))
  24
  25 (defmacro process-class-option (metaclass slot-name &optional required)
  26   #+lispworks
  27   `(defmethod clos:process-a-class-option ((class ,metaclass)
  28                                            (name (eql ,slot-name))
  29                                            value)
  30     (when (and ,required (null value))
  31       (error "metaclass ~A class slot ~A must have a value" (quote ,metaclass) name))
  32     (list name `',value))
  33   #-lispworks
  34     (declare (ignore metaclass slot-name required))
  35     )
  36
  37 (defmacro process-slot-option (metaclass slot-name)
  38   #+lispworks
  39   `(defmethod clos:process-a-slot-option ((class ,metaclass)
  40                                           (option (eql ,slot-name))
  41                                           value
  42                                           already-processed-options
  43                                           slot)
  44     (list* option `',value already-processed-options))
  45   #-lispworks
  46   (declare (ignore metaclass slot-name))
  47   )
  48
  49 (eval-when (:compile-toplevel :load-toplevel :execute)
  50   (defclass %slot-order-test-class ()
  51     ((a)
  52      (b)))
  53   (finalize-inheritance (find-class '%slot-order-test-class))
  54   (let ((slots (class-slots (find-class '%slot-order-test-class))))
  55     (ecase (slot-definition-name (first slots))
  56       (a)
  57       (b (pushnew :mop-slot-order-reversed cl:*features*)))))
  58
  59 (defun ordered-class-slots (class)
  60   #+mop-slot-order-reversed (reverse (class-slots class))
  61   #-mop-slot-order-reversed (class-slots class))
  62
  63 ;; Lispworks has symbol for slot rather than the slot instance
  64 (defun %svuc-slot-name (slot)
  65   #+lispworks slot
  66   #-lispworks (slot-definition-name slot))
  67
  68 (defun %svuc-slot-object (slot class)
  69   (declare (ignorable class))
  70   #+lispworks (clos:find-slot-definition slot class)
  71   #-lispworks slot)
  72