1 ;;;; pcl-patch.lisp --- Hot-patch for SBCL's PCL variant.
3 ;;;; Copyright (C) 2014 Jan Moringen
5 ;;;; Author: Jan Moringen <jmoringe@techfak.uni-bielefeld.de>
7 (cl:in-package #:sb-pcl)
9 ;;; `make-method-lambda-using-specializers'
11 (export '(make-method-lambda-using-specializers))
13 (defgeneric make-method-lambda-using-specializers (gf method qualifiers specializers method-lambda env)
14 (:method ((gf standard-generic-function) (method standard-method) qualifiers specializers method-lambda env)
15 (declare (type (cons (eql lambda) (cons list)) method-lambda))
16 ;; Default behavior: delegate to MAKE-METHOD-LAMBDA.
17 (let* ((lambda-list (second method-lambda))
18 (*method-lambda-list* (append
19 (mapcar #'list (subseq lambda-list 0 (length specializers)) specializers)
20 (subseq lambda-list (length specializers)))))
21 (make-method-lambda gf method method-lambda env)))
27 2. initargs for the method instance
28 3. a (possibly modified) method lambda-list or nil"))
30 (defun expand-defmethod (name
37 (multiple-value-bind (parameters unspecialized-lambda-list specializers)
38 (parse-specialized-lambda-list lambda-list)
39 (declare (ignore parameters))
40 (let ((*method-name* `(,name ,@qualifiers ,specializers))
41 (method-lambda `(lambda ,unspecialized-lambda-list ,@body)))
42 (multiple-value-bind (method-function-lambda initargs new-lambda-list)
43 (make-method-lambda-using-specializers
44 proto-gf proto-method qualifiers specializers method-lambda env)
45 (let ((initargs-form (make-method-initargs-form
46 proto-gf proto-method method-function-lambda
48 (specializers-form (make-method-specializers-form
49 proto-gf proto-method specializers env)))
51 ;; Note: We could DECLAIM the ftype of the generic function
52 ;; here, since ANSI specifies that we create it if it does
53 ;; not exist. However, I chose not to, because I think it's
54 ;; more useful to support a style of programming where every
55 ;; generic function has an explicit DEFGENERIC and any typos
56 ;; in DEFMETHODs are warned about. Otherwise
58 ;; (DEFGENERIC FOO-BAR-BLETCH (X))
59 ;; (DEFMETHOD FOO-BAR-BLETCH ((X HASH-TABLE)) ..)
60 ;; (DEFMETHOD FOO-BRA-BLETCH ((X SIMPLE-VECTOR)) ..)
61 ;; (DEFMETHOD FOO-BAR-BLETCH ((X VECTOR)) ..)
62 ;; (DEFMETHOD FOO-BAR-BLETCH ((X ARRAY)) ..)
63 ;; (DEFMETHOD FOO-BAR-BLETCH ((X LIST)) ..)
65 ;; compiles without raising an error and runs without
66 ;; raising an error (since SIMPLE-VECTOR cases fall through
67 ;; to VECTOR) but still doesn't do what was intended. I hate
68 ;; that kind of bug (code which silently gives the wrong
69 ;; answer), so we don't do a DECLAIM here. -- WHN 20000229
70 ,(make-defmethod-form name qualifiers specializers-form
71 (or new-lambda-list unspecialized-lambda-list)
73 (class-name (class-of proto-method))