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 ()
64 '(character-set ((0 . #.(1- base-char-code-limit)))))
66 (sb!xc:deftype extended-char ()
68 "Type of CHARACTERs that aren't BASE-CHARs."
69 '(and character (not base-char)))
71 (sb!xc:deftype standard-char ()
73 "Type corresponding to the characters required by the standard."
75 #\Newline #\Space #\! #\" #\# #\$ #\% #\& #\' #\( #\) #\* #\+ #\,
76 #\- #\. #\/ #\0 #\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9 #\: #\; #\< #\=
77 #\> #\? #\@ #\A #\B #\C #\D #\E #\F #\G #\H #\I #\J #\K #\L #\M
78 #\N #\O #\P #\Q #\R #\S #\T #\U #\V #\W #\X #\Y #\Z #\[ #\\ #\]
79 #\^ #\_ #\` #\a #\b #\c #\d #\e #\f #\g #\h #\i #\j #\k #\l #\m
80 #\n #\o #\p #\q #\r #\s #\t #\u #\v #\w #\x #\y #\z #\{
83 (sb!xc:deftype keyword ()
84 ;; Defining this as (AND SYMBOL ..) lets (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T.
85 '(and symbol (satisfies keywordp)))
87 (sb!xc:deftype eql (n) `(member ,n))
89 (sb!xc:deftype vector (&optional element-type size)
90 `(array ,element-type (,size)))
92 (sb!xc:deftype simple-vector (&optional size)
93 `(simple-array t (,size)))
95 (sb!xc:deftype base-string (&optional size)
96 `(array base-char (,size)))
97 (sb!xc:deftype simple-base-string (&optional size)
98 `(simple-array base-char (,size)))
99 (sb!xc:deftype string (&optional size)
100 `(or (array character (,size))
102 (base-string ,size)))
103 (sb!xc:deftype simple-string (&optional size)
104 `(or (simple-array character (,size))
105 (simple-array nil (,size))
106 (simple-base-string ,size)))
108 (sb!xc:deftype bit-vector (&optional size)
109 `(array bit (,size)))
111 (sb!xc:deftype simple-bit-vector (&optional size)
112 `(simple-array bit (,size)))
114 ;;;; some private types that we use in defining the standard functions,
115 ;;;; or implementing declarations in standard compiler transforms
117 ;;; semistandard types
118 (sb!xc:deftype generalized-boolean () t)
120 (sb!xc:deftype format-control ()
121 '(or string function))
123 (sb!xc:deftype restart-designator ()
124 '(or (and symbol (not null)) restart))
126 ;;; array rank, total size...
127 (sb!xc:deftype array-rank () `(integer 0 (,sb!xc:array-rank-limit)))
128 (sb!xc:deftype array-total-size ()
129 `(integer 0 (,sb!xc:array-total-size-limit)))
131 ;;; something legal in an evaluated context
132 ;;; FIXME: could probably go away
133 (sb!xc:deftype form () t)
135 (sb!xc:deftype string-designator () '(or string symbol character))
137 ;;; a thing legal in places where we want the name of a file
138 (sb!xc:deftype filename () '(or string pathname))
140 ;;; legal args to pathname functions
141 (sb!xc:deftype pathname-designator ()
142 '(or string pathname #+sb-xc-host stream #-sb-xc-host file-stream))
143 (sb!xc:deftype logical-host-designator ()
146 (sb!xc:deftype package-designator () '(or string-designator sb!xc:package))
147 ;;; a designator for a list of symbols
148 (sb!xc:deftype symbols-designator () '(or list symbol))
150 ;;; a thing returned by the irrational functions. We assume that they
151 ;;; never compute a rational result.
152 (sb!xc:deftype irrational ()
153 '(or float (complex float)))
155 ;;; character components
156 (sb!xc:deftype char-code () `(integer 0 (,sb!xc:char-code-limit)))
158 ;;; a consed sequence result. If a vector, is a simple array.
159 (sb!xc:deftype consed-sequence () '(or list (simple-array * (*))))
161 ;;; the :END arg to a sequence
162 (sb!xc:deftype sequence-end () '(or null index))
164 ;;; the :COUNT arg to a sequence
165 (sb!xc:deftype sequence-count ()
168 ;;; a valid argument to a stream function
169 (sb!xc:deftype stream-designator () '(or stream (member nil t)))
171 ;;; an object suitable for input to standard functions that accept
172 ;;; "environment objects" (of the ANSI glossary)
173 (sb!xc:deftype lexenv-designator () '(or lexenv null))
175 ;;; a thing that can be passed to FUNCALL & friends
177 ;;; FIXME: should be FUNCTION-DESIGNATOR?
178 (sb!xc:deftype callable () '(or function symbol))
180 ;;; decomposing floats into integers
181 (sb!xc:deftype single-float-exponent ()
182 `(integer ,(- sb!vm:single-float-normal-exponent-min
183 sb!vm:single-float-bias
184 sb!vm:single-float-digits)
185 ,(- sb!vm:single-float-normal-exponent-max
186 sb!vm:single-float-bias)))
187 (sb!xc:deftype double-float-exponent ()
188 `(integer ,(- sb!vm:double-float-normal-exponent-min
189 sb!vm:double-float-bias
190 sb!vm:double-float-digits)
191 ,(- sb!vm:double-float-normal-exponent-max
192 sb!vm:double-float-bias)))
193 (sb!xc:deftype single-float-int-exponent ()
194 `(integer ,(- sb!vm:single-float-normal-exponent-min
195 sb!vm:single-float-bias
196 (* sb!vm:single-float-digits 2))
197 ,(- sb!vm:single-float-normal-exponent-max
198 sb!vm:single-float-bias
199 sb!vm:single-float-digits)))
200 (sb!xc:deftype double-float-int-exponent ()
201 `(integer ,(- sb!vm:double-float-normal-exponent-min sb!vm:double-float-bias
202 (* sb!vm:double-float-digits 2))
203 ,(- sb!vm:double-float-normal-exponent-max sb!vm:double-float-bias
204 sb!vm:double-float-digits)))
205 (sb!xc:deftype single-float-significand ()
206 `(integer 0 (,(ash 1 sb!vm:single-float-digits))))
207 (sb!xc:deftype double-float-significand ()
208 `(integer 0 (,(ash 1 sb!vm:double-float-digits))))
210 (/show0 "deftypes-for-target.lisp end of file")