1 ;;;; macros, global variable definitions, and other miscellaneous support stuff
2 ;;;; used by the rest of the PCL subsystem
4 ;;;; This software is part of the SBCL system. See the README file for
7 ;;;; This software is derived from software originally released by Xerox
8 ;;;; Corporation. Copyright and release statements follow. Later modifications
9 ;;;; to the software are in the public domain and are provided with
10 ;;;; absolutely no warranty. See the COPYING and CREDITS files for more
13 ;;;; copyright information from original PCL sources:
15 ;;;; Copyright (c) 1985, 1986, 1987, 1988, 1989, 1990 Xerox Corporation.
16 ;;;; All rights reserved.
18 ;;;; Use and copying of this software and preparation of derivative works based
19 ;;;; upon this software are permitted. Any distribution of this software or
20 ;;;; derivative works must comply with all applicable United States export
23 ;;;; This software is made available AS IS, and Xerox Corporation makes no
24 ;;;; warranty about the software, its performance or its conformity to any
29 (/show "starting pcl/macros.lisp")
32 ;; These nonstandard declarations seem to be used privately
33 ;; within PCL itself to pass information around, so we can't
36 ;; This declaration may also be used within PCL to pass
37 ;; information around, I'm not sure. -- WHN 2000-12-30
40 (/show "done with DECLAIM DECLARATION")
42 (defun get-declaration (name declarations &optional default)
43 (dolist (d declarations default)
44 (dolist (form (cdr d))
45 (when (and (consp form) (eq (car form) name))
46 (return-from get-declaration (cdr form))))))
48 (/show "pcl/macros.lisp 85")
50 (defmacro doplist ((key val) plist &body body)
51 `(let ((.plist-tail. ,plist) ,key ,val)
52 (loop (when (null .plist-tail.) (return nil))
53 (setq ,key (pop .plist-tail.))
54 (when (null .plist-tail.)
55 (error "malformed plist, odd number of elements"))
56 (setq ,val (pop .plist-tail.))
59 (/show "pcl/macros.lisp 101")
61 (defmacro dolist-carefully ((var list improper-list-handler) &body body)
63 (.dolist-carefully. ,list))
64 (loop (when (null .dolist-carefully.) (return nil))
65 (if (consp .dolist-carefully.)
67 (setq ,var (pop .dolist-carefully.))
69 (,improper-list-handler)))))
73 ;;;; This is documented in the CLOS specification.
75 (/show "pcl/macros.lisp 119")
77 (declaim (inline legal-class-name-p))
78 (defun legal-class-name-p (x)
81 (defvar *create-classes-from-internal-structure-definitions-p* t)
83 (defun find-class-from-cell (symbol cell &optional (errorp t))
85 (or (classoid-cell-pcl-class cell)
86 (when *create-classes-from-internal-structure-definitions-p*
87 (let ((classoid (classoid-cell-classoid cell)))
89 (or (condition-classoid-p classoid)
90 (defstruct-classoid-p classoid)))
91 (ensure-non-standard-class symbol classoid))))))
92 (cond ((null errorp) nil)
93 ((legal-class-name-p symbol)
94 (error "There is no class named ~
95 ~/sb-impl::print-symbol-with-prefix/." symbol))
97 (error "~S is not a legal class name." symbol)))))
99 (defun find-class (symbol &optional (errorp t) environment)
100 (declare (ignore environment))
101 (find-class-from-cell symbol
102 (find-classoid-cell symbol)
106 ;;; This DEFVAR was originally in defs.lisp, now moved here.
108 ;;; Possible values are NIL, EARLY, BRAID, or COMPLETE.
109 (declaim (type (member nil early braid complete) **boot-state**))
110 (defglobal **boot-state** nil)
112 (/show "pcl/macros.lisp 187")
114 (define-compiler-macro find-class (&whole form
115 symbol &optional (errorp t) environment)
116 (declare (ignore environment))
117 (if (and (constantp symbol)
118 (legal-class-name-p (setf symbol (constant-form-value symbol)))
120 (member **boot-state** '(braid complete)))
121 (let ((errorp (not (null (constant-form-value errorp))))
122 (cell (make-symbol "CLASSOID-CELL")))
123 `(let ((,cell (load-time-value (find-classoid-cell ',symbol :create t))))
124 (or (classoid-cell-pcl-class ,cell)
126 `(find-class-from-cell ',symbol ,cell t)
127 `(when (classoid-cell-classoid ,cell)
128 (find-class-from-cell ',symbol ,cell nil))))))
131 (declaim (inline class-classoid))
132 (defun class-classoid (class)
133 (layout-classoid (class-wrapper class)))
135 (defun (setf find-class) (new-value name &optional errorp environment)
136 (declare (ignore errorp environment))
137 (cond ((legal-class-name-p name)
138 (with-single-package-locked-error
139 (:symbol name "Using ~A as the class-name argument in ~
142 (let ((cell (find-classoid-cell name :create new-value)))
144 (setf (classoid-cell-pcl-class cell) new-value)
145 (when (eq **boot-state** 'complete)
146 (let ((classoid (class-classoid new-value)))
147 (setf (find-classoid name) classoid)
148 (%set-class-type-translation new-value classoid))))
150 (%clear-classoid name cell)))
151 (when (or (eq **boot-state** 'complete)
152 (eq **boot-state** 'braid))
153 (update-ctors 'setf-find-class :class new-value :name name))
156 (error "~S is not a legal class name." name))))
158 (/show "pcl/macros.lisp 241")
160 (defmacro function-funcall (form &rest args)
161 `(funcall (the function ,form) ,@args))
163 (defmacro function-apply (form &rest args)
164 `(apply (the function ,form) ,@args))
166 (/show "pcl/macros.lisp 249")
168 (defun get-setf-fun-name (name)
171 (defsetf slot-value set-slot-value)
173 (/show "finished with pcl/macros.lisp")