1 ;;;; definitions of types for the target (output of the compiler)
3 ;;;; This software is part of the SBCL system. See the README file for
6 ;;;; This software is derived from the CMU CL system, which was
7 ;;;; written at Carnegie Mellon University and released into the
8 ;;;; public domain. The software is in the public domain and is
9 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
10 ;;;; files for more information.
12 (in-package "SB!KERNEL")
14 (/show0 "deftypes-for-target.lisp 14")
16 ;;;; Now that DEFTYPE is set up, any pending requests for it can
21 (/show "about to force delayed DEF!TYPEs")
22 (force-delayed-def!types)
23 (/show "done forcing delayed DEF!TYPEs"))
27 (sb!xc:deftype boolean () '(member t nil))
29 (sb!xc:deftype mod (n)
30 (unless (and (integerp n) (> n 0))
31 (error "bad modulus specified for MOD type specifier: ~S" n))
34 (sb!xc:deftype signed-byte (&optional s)
35 (cond ((eq s '*) 'integer)
36 ((and (integerp s) (> s 1))
37 (let ((bound (ash 1 (1- s))))
38 `(integer ,(- bound) ,(1- bound))))
40 (error "bad size specified for SIGNED-BYTE type specifier: ~S" s))))
42 (sb!xc:deftype unsigned-byte (&optional s)
43 (cond ((eq s '*) '(integer 0))
44 ((and (integerp s) (> s 0))
45 `(integer 0 ,(1- (ash 1 s))))
47 (error "bad size specified for UNSIGNED-BYTE type specifier: ~S" s))))
49 (sb!xc:deftype bit () '(integer 0 1))
51 (sb!xc:deftype compiled-function () 'function)
53 (sb!xc:deftype atom () '(not cons))
55 (sb!xc:deftype extended-char ()
57 "Type of characters that aren't base-char's. None in CMU CL."
58 '(and character (not base-char)))
60 (sb!xc:deftype standard-char ()
62 "Type corresponding to the characters required by the standard."
64 #\NEWLINE #\SPACE #\! #\" #\# #\$ #\% #\& #\' #\( #\) #\* #\+ #\,
65 #\- #\. #\/ #\0 #\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9 #\: #\; #\< #\=
66 #\> #\? #\@ #\A #\B #\C #\D #\E #\F #\G #\H #\I #\J #\K #\L #\M
67 #\N #\O #\P #\Q #\R #\S #\T #\U #\V #\W #\X #\Y #\Z #\[ #\\ #\]
68 #\^ #\_ #\` #\a #\b #\c #\d #\e #\f #\g #\h #\i #\j #\k #\l #\m
69 #\n #\o #\p #\q #\r #\s #\t #\u #\v #\w #\x #\y #\z #\{
72 (sb!xc:deftype keyword ()
73 ;; Defining this as (AND SYMBOL ..) lets (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T.
74 '(and symbol (satisfies keywordp)))
76 (sb!xc:deftype eql (n) `(member ,n))
78 (sb!xc:deftype vector (&optional element-type size)
79 `(array ,element-type (,size)))
81 (sb!xc:deftype simple-vector (&optional size)
82 `(simple-array t (,size)))
84 (sb!xc:deftype base-string (&optional size)
85 `(array base-char (,size)))
86 (sb!xc:deftype simple-base-string (&optional size)
87 `(simple-array base-char (,size)))
88 (sb!xc:deftype string (&optional size)
89 `(or (array character (,size))
91 (sb!xc:deftype simple-string (&optional size)
92 `(or (simple-array character (,size))
93 (simple-base-string ,size)))
95 (sb!xc:deftype bit-vector (&optional size)
98 (sb!xc:deftype simple-bit-vector (&optional size)
99 `(simple-array bit (,size)))
101 ;;;; some private types that we use in defining the standard functions,
102 ;;;; or implementing declarations in standard compiler transforms
104 ;;; semistandard types
105 (sb!xc:deftype generalized-boolean () t)
107 (sb!xc:deftype format-control ()
108 '(or string function))
110 (sb!xc:deftype restart-designator ()
111 '(or (and symbol (not null)) restart))
115 ;;; FIXME: The SB!KERNEL:INSTANCE here really means CL:CLASS.
116 ;;; However, the CL:CLASS type is only defined once PCL is loaded,
117 ;;; which is before this is evaluated. Once PCL is moved into cold
118 ;;; init, this might be fixable.
119 (sb!xc:deftype type-specifier () '(or list symbol sb!kernel:instance))
121 ;;; array rank, total size...
122 (sb!xc:deftype array-rank () `(integer 0 (,sb!xc:array-rank-limit)))
123 (sb!xc:deftype array-total-size ()
124 `(integer 0 (,sb!xc:array-total-size-limit)))
126 ;;; something legal in an evaluated context
127 ;;; FIXME: could probably go away
128 (sb!xc:deftype form () t)
130 ;;; Maclisp compatibility...
131 ;;; FIXME: should be STRING-DESIGNATOR (the term used in the ANSI spec)
132 (sb!xc:deftype stringable () '(or string symbol character))
134 ;;; a thing legal in places where we want the name of a file
135 (sb!xc:deftype filename () '(or string pathname))
137 ;;; legal args to pathname functions
138 (sb!xc:deftype pathname-designator ()
139 '(or string pathname #+sb-xc-host stream #-sb-xc-host file-stream))
140 (sb!xc:deftype logical-host-designator ()
143 ;;; a thing returned by the irrational functions. We assume that they
144 ;;; never compute a rational result.
145 (sb!xc:deftype irrational ()
146 '(or float (complex float)))
148 ;;; character components
149 (sb!xc:deftype char-code () `(integer 0 (,sb!xc:char-code-limit)))
151 ;;; a consed sequence result. If a vector, is a simple array.
152 (sb!xc:deftype consed-sequence () '(or list (simple-array * (*))))
154 ;;; the :END arg to a sequence
155 (sb!xc:deftype sequence-end () '(or null index))
157 ;;; the :COUNT arg to a sequence
158 (sb!xc:deftype sequence-count ()
161 ;;; a valid argument to a stream function
163 ;;; FIXME: should probably be STREAM-DESIGNATOR, after the term
164 ;;; used in the ANSI spec (if this is in fact exactly the same thing)
165 (sb!xc:deftype streamlike () '(or stream (member nil t)))
167 ;;; an object suitable for input to standard functions that accept
168 ;;; "environment objects" (of the ANSI glossary)
169 (sb!xc:deftype lexenv-designator () '(or lexenv null))
171 ;;; a thing that can be passed to FUNCALL & friends
173 ;;; FIXME: should be FUNCTION-DESIGNATOR?
174 (sb!xc:deftype callable () '(or function symbol))
176 ;;; decomposing floats into integers
177 (sb!xc:deftype single-float-exponent ()
178 `(integer ,(- sb!vm:single-float-normal-exponent-min
179 sb!vm:single-float-bias
180 sb!vm:single-float-digits)
181 ,(- sb!vm:single-float-normal-exponent-max
182 sb!vm:single-float-bias)))
183 (sb!xc:deftype double-float-exponent ()
184 `(integer ,(- sb!vm:double-float-normal-exponent-min
185 sb!vm:double-float-bias
186 sb!vm:double-float-digits)
187 ,(- sb!vm:double-float-normal-exponent-max
188 sb!vm:double-float-bias)))
189 (sb!xc:deftype single-float-int-exponent ()
190 `(integer ,(- sb!vm:single-float-normal-exponent-min
191 sb!vm:single-float-bias
192 (* sb!vm:single-float-digits 2))
193 ,(- sb!vm:single-float-normal-exponent-max
194 sb!vm:single-float-bias
195 sb!vm:single-float-digits)))
196 (sb!xc:deftype double-float-int-exponent ()
197 `(integer ,(- sb!vm:double-float-normal-exponent-min sb!vm:double-float-bias
198 (* sb!vm:double-float-digits 2))
199 ,(- sb!vm:double-float-normal-exponent-max sb!vm:double-float-bias
200 sb!vm:double-float-digits)))
201 (sb!xc:deftype single-float-significand ()
202 `(integer 0 (,(ash 1 sb!vm:single-float-digits))))
203 (sb!xc:deftype double-float-significand ()
204 `(integer 0 (,(ash 1 sb!vm:double-float-digits))))
206 (/show0 "deftypes-for-target.lisp end of file")