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 0))
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 ;;; ANSI got UNSIGNED-BYTE wrong, prohibiting (UNSIGNED-BYTE 0).
50 ;;; Since this is actually a substantial impediment to clarity...
51 (sb!xc:deftype unsigned-byte* (&optional s)
53 ((eq s '*) '(integer 0))
54 ((zerop s) '(integer 0 0))
55 (t `(unsigned-byte ,s))))
57 (sb!xc:deftype bit () '(integer 0 1))
59 (sb!xc:deftype compiled-function () 'function)
61 (sb!xc:deftype atom () '(not cons))
63 (sb!xc:deftype base-char () 'character)
65 (sb!xc:deftype extended-char ()
67 "Type of CHARACTERs that aren't BASE-CHARs."
68 '(and character (not base-char)))
70 (sb!xc:deftype standard-char ()
72 "Type corresponding to the characters required by the standard."
74 #\Newline #\Space #\! #\" #\# #\$ #\% #\& #\' #\( #\) #\* #\+ #\,
75 #\- #\. #\/ #\0 #\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9 #\: #\; #\< #\=
76 #\> #\? #\@ #\A #\B #\C #\D #\E #\F #\G #\H #\I #\J #\K #\L #\M
77 #\N #\O #\P #\Q #\R #\S #\T #\U #\V #\W #\X #\Y #\Z #\[ #\\ #\]
78 #\^ #\_ #\` #\a #\b #\c #\d #\e #\f #\g #\h #\i #\j #\k #\l #\m
79 #\n #\o #\p #\q #\r #\s #\t #\u #\v #\w #\x #\y #\z #\{
82 (sb!xc:deftype keyword ()
83 ;; Defining this as (AND SYMBOL ..) lets (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T.
84 '(and symbol (satisfies keywordp)))
86 (sb!xc:deftype eql (n) `(member ,n))
88 (sb!xc:deftype vector (&optional element-type size)
89 `(array ,element-type (,size)))
91 (sb!xc:deftype simple-vector (&optional size)
92 `(simple-array t (,size)))
94 (sb!xc:deftype base-string (&optional size)
95 `(array base-char (,size)))
96 (sb!xc:deftype simple-base-string (&optional size)
97 `(simple-array base-char (,size)))
98 (sb!xc:deftype string (&optional size)
99 `(or (array character (,size))
101 (base-string ,size)))
102 (sb!xc:deftype simple-string (&optional size)
103 `(or (simple-array character (,size))
104 (simple-array nil (,size))
105 (simple-base-string ,size)))
107 (sb!xc:deftype bit-vector (&optional size)
108 `(array bit (,size)))
110 (sb!xc:deftype simple-bit-vector (&optional size)
111 `(simple-array bit (,size)))
113 ;;;; some private types that we use in defining the standard functions,
114 ;;;; or implementing declarations in standard compiler transforms
116 ;;; semistandard types
117 (sb!xc:deftype generalized-boolean () t)
119 (sb!xc:deftype format-control ()
120 '(or string function))
122 (sb!xc:deftype restart-designator ()
123 '(or (and symbol (not null)) restart))
125 ;;; array rank, total size...
126 (sb!xc:deftype array-rank () `(integer 0 (,sb!xc:array-rank-limit)))
127 (sb!xc:deftype array-total-size ()
128 `(integer 0 (,sb!xc:array-total-size-limit)))
130 ;;; something legal in an evaluated context
131 ;;; FIXME: could probably go away
132 (sb!xc:deftype form () t)
134 (sb!xc:deftype string-designator () '(or string symbol character))
136 ;;; a thing legal in places where we want the name of a file
137 (sb!xc:deftype filename () '(or string pathname))
139 ;;; legal args to pathname functions
140 (sb!xc:deftype pathname-designator ()
141 '(or string pathname #+sb-xc-host stream #-sb-xc-host file-stream))
142 (sb!xc:deftype logical-host-designator ()
145 (sb!xc:deftype package-designator () '(or string-designator sb!xc:package))
146 ;;; a designator for a list of symbols
147 (sb!xc:deftype symbols-designator () '(or list symbol))
149 ;;; a thing returned by the irrational functions. We assume that they
150 ;;; never compute a rational result.
151 (sb!xc:deftype irrational ()
152 '(or float (complex float)))
154 ;;; character components
155 (sb!xc:deftype char-code () `(integer 0 (,sb!xc:char-code-limit)))
157 ;;; a consed sequence result. If a vector, is a simple array.
158 (sb!xc:deftype consed-sequence () '(or list (simple-array * (*))))
160 ;;; the :END arg to a sequence
161 (sb!xc:deftype sequence-end () '(or null index))
163 ;;; the :COUNT arg to a sequence
164 (sb!xc:deftype sequence-count ()
167 ;;; a valid argument to a stream function
168 (sb!xc:deftype stream-designator () '(or stream (member nil t)))
170 ;;; an object suitable for input to standard functions that accept
171 ;;; "environment objects" (of the ANSI glossary)
172 (sb!xc:deftype lexenv-designator () '(or lexenv null))
174 ;;; a thing that can be passed to FUNCALL & friends
176 ;;; FIXME: should be FUNCTION-DESIGNATOR?
177 (sb!xc:deftype callable () '(or function symbol))
179 ;;; decomposing floats into integers
180 (sb!xc:deftype single-float-exponent ()
181 `(integer ,(- sb!vm:single-float-normal-exponent-min
182 sb!vm:single-float-bias
183 sb!vm:single-float-digits)
184 ,(- sb!vm:single-float-normal-exponent-max
185 sb!vm:single-float-bias)))
186 (sb!xc:deftype double-float-exponent ()
187 `(integer ,(- sb!vm:double-float-normal-exponent-min
188 sb!vm:double-float-bias
189 sb!vm:double-float-digits)
190 ,(- sb!vm:double-float-normal-exponent-max
191 sb!vm:double-float-bias)))
192 (sb!xc:deftype single-float-int-exponent ()
193 `(integer ,(- sb!vm:single-float-normal-exponent-min
194 sb!vm:single-float-bias
195 (* sb!vm:single-float-digits 2))
196 ,(- sb!vm:single-float-normal-exponent-max
197 sb!vm:single-float-bias
198 sb!vm:single-float-digits)))
199 (sb!xc:deftype double-float-int-exponent ()
200 `(integer ,(- sb!vm:double-float-normal-exponent-min sb!vm:double-float-bias
201 (* sb!vm:double-float-digits 2))
202 ,(- sb!vm:double-float-normal-exponent-max sb!vm:double-float-bias
203 sb!vm:double-float-digits)))
204 (sb!xc:deftype single-float-significand ()
205 `(integer 0 (,(ash 1 sb!vm:single-float-digits))))
206 (sb!xc:deftype double-float-significand ()
207 `(integer 0 (,(ash 1 sb!vm:double-float-digits))))
209 (/show0 "deftypes-for-target.lisp end of file")