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 (/show
"pcl/macros.lisp 101")
52 (defmacro dolist-carefully
((var list improper-list-handler
) &body body
)
54 (.dolist-carefully.
,list
))
55 (loop (when (null .dolist-carefully.
) (return nil
))
56 (if (consp .dolist-carefully.
)
58 (setq ,var
(pop .dolist-carefully.
))
60 (,improper-list-handler
)))))
64 ;;;; This is documented in the CLOS specification.
66 (/show
"pcl/macros.lisp 119")
68 (declaim (inline legal-class-name-p
))
69 (defun legal-class-name-p (x)
72 (defvar *create-classes-from-internal-structure-definitions-p
* t
)
74 (declaim (ftype function ensure-non-standard-class
))
75 (defun find-class-from-cell (symbol cell
&optional
(errorp t
))
77 (or (classoid-cell-pcl-class cell
)
78 (when *create-classes-from-internal-structure-definitions-p
*
79 (let ((classoid (classoid-cell-classoid cell
)))
81 (or (condition-classoid-p classoid
)
82 (defstruct-classoid-p classoid
)))
83 (ensure-non-standard-class symbol classoid
))))))
84 (cond ((null errorp
) nil
)
85 ((legal-class-name-p symbol
)
86 (error "There is no class named ~
87 ~/sb-impl::print-symbol-with-prefix/." symbol
))
89 (error "~S is not a legal class name." symbol
)))))
91 (defun find-class (symbol &optional
(errorp t
) environment
)
92 (declare (ignore environment
))
93 (find-class-from-cell symbol
94 (find-classoid-cell symbol
)
98 ;;; This DEFVAR was originally in defs.lisp, now moved here.
100 ;;; Possible values are NIL, EARLY, BRAID, or COMPLETE.
101 (declaim (type (member nil early braid complete
) **boot-state
**))
102 (defglobal **boot-state
** nil
)
104 (/show
"pcl/macros.lisp 187")
106 (define-compiler-macro find-class
(&whole form
107 symbol
&optional
(errorp t
) environment
)
108 (declare (ignore environment
))
109 (if (and (constantp symbol
)
110 (legal-class-name-p (setf symbol
(constant-form-value symbol
)))
112 (member **boot-state
** '(braid complete
)))
113 (let ((errorp (not (null (constant-form-value errorp
))))
114 (cell (make-symbol "CLASSOID-CELL")))
115 `(let ((,cell
(load-time-value (find-classoid-cell ',symbol
:create t
))))
116 (or (classoid-cell-pcl-class ,cell
)
118 `(find-class-from-cell ',symbol
,cell t
)
119 `(when (classoid-cell-classoid ,cell
)
120 (find-class-from-cell ',symbol
,cell nil
))))))
123 (declaim (ftype function class-wrapper
))
124 (declaim (inline class-classoid
))
125 (defun class-classoid (class)
126 (layout-classoid (class-wrapper class
)))
128 (declaim (ftype function %set-class-type-translation update-ctors
))
129 (defun (setf find-class
) (new-value name
&optional errorp environment
)
130 (declare (ignore errorp environment
))
131 (cond ((legal-class-name-p name
)
132 (with-single-package-locked-error
133 (:symbol name
"Using ~A as the class-name argument in ~
136 (let ((cell (find-classoid-cell name
:create new-value
)))
138 (setf (classoid-cell-pcl-class cell
) new-value
)
139 (when (eq **boot-state
** 'complete
)
140 (let ((classoid (class-classoid new-value
)))
141 (setf (find-classoid name
) classoid
)
142 (%set-class-type-translation new-value classoid
))))
144 (%clear-classoid name cell
)))
145 (when (or (eq **boot-state
** 'complete
)
146 (eq **boot-state
** 'braid
))
147 (update-ctors 'setf-find-class
:class new-value
:name name
))
150 (error "~S is not a legal class name." name
))))
152 (/show
"pcl/macros.lisp 241")
154 (defmacro function-funcall
(form &rest args
)
155 `(funcall (the function
,form
) ,@args
))
157 (defmacro function-apply
(form &rest args
)
158 `(apply (the function
,form
) ,@args
))
160 (/show
"pcl/macros.lisp 249")
162 (defun get-setf-fun-name (name)
165 (defsetf slot-value set-slot-value
)
167 (/show
"finished with pcl/macros.lisp")