1 ;;;; some basic PRINT-OBJECT functionality
3 ;;;; This software is part of the SBCL system. See the README file for
6 ;;;; This software is derived from software originally released by Xerox
7 ;;;; Corporation. Copyright and release statements follow. Later modifications
8 ;;;; to the software are in the public domain and are provided with
9 ;;;; absolutely no warranty. See the COPYING and CREDITS files for more
12 ;;;; Some of the text in this file was originally taken from various files of
13 ;;;; the PCL system from Xerox Corporation, which carried the following
14 ;;;; copyright information:
16 ;;;; Copyright (c) 1985, 1986, 1987, 1988, 1989, 1990 Xerox Corporation.
17 ;;;; All rights reserved.
19 ;;;; Use and copying of this software and preparation of derivative works based
20 ;;;; upon this software are permitted. Any distribution of this software or
21 ;;;; derivative works must comply with all applicable United States export
24 ;;;; This software is made available AS IS, and Xerox Corporation makes no
25 ;;;; warranty about the software, its performance or its conformity to any
33 ;;;; the PRINT-OBJECT generic function
35 ;;; Blow away the old non-generic function placeholder which was used by the
36 ;;; printer doing bootstrapping, and immediately replace it with some new
37 ;;; printing logic, so that the Lisp printer stays crippled only for the
38 ;;; shortest necessary time.
39 (let (;; (If we don't suppress /SHOW printing while the printer is
40 ;; crippled here, it becomes really easy to crash the bootstrap
41 ;; sequence by adding /SHOW statements e.g. to the compiler,
42 ;; which kinda defeats the purpose of /SHOW being a harmless
43 ;; tracing-style statement.)
44 #+sb-show (sb-int:*/show* nil))
45 (fmakunbound 'print-object)
46 (defgeneric print-object (object stream))
47 (defmethod print-object ((x t) stream)
48 (print-unreadable-object (x stream :type t :identity t))))
50 ;;;; a hook called by the printer to take care of dispatching to PRINT-OBJECT
51 ;;;; for appropriate FUNCALLABLE-INSTANCE objects
53 ;;; Now that CLOS is working, we can replace our old temporary placeholder code
54 ;;; for writing funcallable instances with permanent code:
55 (defun sb-impl::printed-as-funcallable-standard-class (object stream)
56 (when (funcallable-standard-class-p (class-of object))
57 (print-object object stream)
60 ;;;; PRINT-OBJECT methods for objects from PCL classes
62 ;;;; FIXME: Perhaps these should be moved back alongside the definitions of
63 ;;;; the classes they print. (Bootstrapping problems could be avoided by
64 ;;;; using DEF!METHOD to do this.)
66 (defmethod print-object ((method standard-method) stream)
67 (print-unreadable-object (method stream :type t :identity t)
68 (if (slot-boundp method 'generic-function)
69 (let ((generic-function (method-generic-function method)))
70 (format stream "~S ~{~S ~}~:S"
72 (generic-function-name generic-function))
73 (method-qualifiers method)
74 (unparse-specializers method)))
75 ;; FIXME: Why do we do CALL-NEXT-METHOD in this method (and
76 ;; in the PRINT-OBJECT STANDARD-ACCESSOR-METHOD method too)?
79 (defmethod print-object ((method standard-accessor-method) stream)
80 (print-unreadable-object (method stream :type t :identity t)
81 (if (slot-boundp method 'generic-function)
82 (let ((generic-function (method-generic-function method)))
83 (format stream "~S, slot:~S, ~:S"
85 (generic-function-name generic-function))
86 (accessor-method-slot-name method)
87 (unparse-specializers method)))
90 (defmethod print-object ((mc standard-method-combination) stream)
91 (print-unreadable-object (mc stream :type t :identity t)
94 (slot-value-or-default mc 'type)
95 (slot-value-or-default mc 'options))))
97 (defun named-object-print-function (instance stream
98 &optional (extra nil extra-p))
99 (print-unreadable-object (instance stream :type t)
103 (slot-value-or-default instance 'name)
107 (slot-value-or-default instance 'name)))))
109 (defmethod print-object ((class class) stream)
110 (named-object-print-function class stream))
112 (defmethod print-object ((slotd slot-definition) stream)
113 (named-object-print-function slotd stream))
115 (defmethod print-object ((generic-function generic-function) stream)
116 (named-object-print-function
119 (if (slot-boundp generic-function 'methods)
120 (list (length (generic-function-methods generic-function)))
123 (defmethod print-object ((constructor constructor) stream)
124 (print-unreadable-object (constructor stream :type t :identity t)
127 (slot-value-or-default constructor 'name)
128 (slot-value-or-default constructor 'code-type))))
130 (defmethod print-object ((cache cache) stream)
131 (print-unreadable-object (cache stream :type t :identity t)
136 (cache-nlines cache))))
138 (defmethod print-object ((wrapper wrapper) stream)
139 (print-unreadable-object (wrapper stream :type t :identity t)
140 (prin1 (wrapper-class wrapper) stream)))
142 (defmethod print-object ((dfun-info dfun-info) stream)
143 (declare (type stream stream))
144 (print-unreadable-object (dfun-info stream :type t :identity t)))