1 ! Copyright (C) 2004, 2008 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: bit-arrays byte-arrays float-arrays arrays
4 assocs kernel kernel.private libc math
5 namespaces parser sequences strings words assocs splitting
6 math.parser cpu.architecture alien alien.accessors quotations
7 layouts system compiler.units io.files io.encodings.binary
8 accessors combinators effects ;
14 : little-endian? ( -- ? ) 1 <int> *char 1 = ; foldable
17 boxer boxer-quot unboxer unboxer-quot
19 reg-class size align stack-align? ;
21 : new-c-type ( class -- type )
23 int-regs >>reg-class ;
25 : <c-type> ( -- type )
31 c-types [ H{ } assoc-like ] change
34 ERROR: no-c-type name ;
36 : (c-type) ( name -- type/f )
37 c-types get-global at dup [
38 dup string? [ (c-type) ] when
41 GENERIC: c-type ( name -- type ) foldable
43 : resolve-pointer-type ( name -- name )
44 c-types get at dup string?
45 [ "*" append ] [ drop "void*" ] if
48 : resolve-typedef ( name -- type )
49 dup string? [ c-type ] when ;
51 : parse-array-type ( name -- array )
53 >r [ "]" ?tail drop string>number ] map r> prefix ;
55 M: string c-type ( name -- type )
56 CHAR: ] over member? [
62 "*" ?tail [ resolve-pointer-type ] [ no-c-type ] if
66 : c-type-box ( n type -- )
68 swap c-type-boxer [ "No boxer" throw ] unless*
71 : c-type-unbox ( n ctype -- )
73 swap c-type-unboxer [ "No unboxer" throw ] unless*
76 M: string c-type-align c-type c-type-align ;
78 M: string c-type-stack-align? c-type c-type-stack-align? ;
80 GENERIC: box-parameter ( n ctype -- )
82 M: c-type box-parameter c-type-box ;
84 M: string box-parameter c-type box-parameter ;
86 GENERIC: box-return ( ctype -- )
88 M: c-type box-return f swap c-type-box ;
90 M: string box-return c-type box-return ;
92 GENERIC: unbox-parameter ( n ctype -- )
94 M: c-type unbox-parameter c-type-unbox ;
96 M: string unbox-parameter c-type unbox-parameter ;
98 GENERIC: unbox-return ( ctype -- )
100 M: c-type unbox-return f swap c-type-unbox ;
102 M: string unbox-return c-type unbox-return ;
104 ! These words being foldable means that words need to be
105 ! recompiled if a C type is redefined. Even so, folding the
106 ! size facilitates some optimizations.
107 GENERIC: heap-size ( type -- size ) foldable
109 M: string heap-size c-type heap-size ;
111 M: c-type heap-size c-type-size ;
113 GENERIC: stack-size ( type -- size ) foldable
115 M: string stack-size c-type stack-size ;
117 M: c-type stack-size c-type-size ;
119 GENERIC: byte-length ( seq -- n ) flushable
121 M: bit-array byte-length length 7 + -3 shift ;
123 M: byte-array byte-length length ;
125 M: float-array byte-length length "double" heap-size * ;
127 : c-getter ( name -- quot )
128 c-type c-type-getter [
129 [ "Cannot read struct fields with type" throw ]
132 : c-setter ( name -- quot )
133 c-type c-type-setter [
134 [ "Cannot write struct fields with type" throw ]
137 : <c-array> ( n type -- array )
138 heap-size * <byte-array> ; inline
140 : <c-object> ( type -- array )
141 1 swap <c-array> ; inline
143 : malloc-array ( n type -- alien )
144 heap-size calloc ; inline
146 : malloc-object ( type -- alien )
147 1 swap malloc-array ; inline
149 : malloc-byte-array ( byte-array -- alien )
150 dup length dup malloc [ -rot memcpy ] keep ;
152 : memory>byte-array ( alien len -- byte-array )
153 dup <byte-array> [ -rot memcpy ] keep ;
155 : byte-array>memory ( byte-array base -- )
156 swap dup length memcpy ;
158 : (define-nth) ( word type quot -- )
159 >r heap-size [ rot * ] swap prefix r> append define-inline ;
161 : nth-word ( name vocab -- word )
162 >r "-nth" append r> create ;
164 : define-nth ( name vocab -- )
165 dupd nth-word swap dup c-getter (define-nth) ;
167 : set-nth-word ( name vocab -- word )
168 >r "set-" swap "-nth" 3append r> create ;
170 : define-set-nth ( name vocab -- )
171 dupd set-nth-word swap dup c-setter (define-nth) ;
173 : typedef ( old new -- ) c-types get set-at ;
175 : define-c-type ( type name vocab -- )
176 >r tuck typedef r> [ define-nth ] 2keep define-set-nth ;
178 TUPLE: long-long-type < c-type ;
180 : <long-long-type> ( -- type )
181 long-long-type new-c-type ;
183 M: long-long-type unbox-parameter ( n type -- )
184 c-type-unboxer %unbox-long-long ;
186 M: long-long-type unbox-return ( type -- )
187 f swap unbox-parameter ;
189 M: long-long-type box-parameter ( n type -- )
190 c-type-boxer %box-long-long ;
192 M: long-long-type box-return ( type -- )
193 f swap box-parameter ;
195 : define-deref ( name vocab -- )
196 >r dup CHAR: * prefix r> create
197 swap c-getter 0 prefix define-inline ;
199 : define-out ( name vocab -- )
200 over [ <c-object> tuck 0 ] over c-setter append swap
201 >r >r constructor-word r> r> prefix define-inline ;
203 : c-bool> ( int -- ? )
206 : >c-array ( seq type word -- )
207 >r >r dup length dup r> <c-array> dup -roll r>
208 [ execute ] 2curry 2each ; inline
210 : >c-array-quot ( type vocab -- quot )
211 dupd set-nth-word [ >c-array ] 2curry ;
213 : to-array-word ( name vocab -- word )
214 >r ">c-" swap "-array" 3append r> create ;
216 : define-to-array ( type vocab -- )
217 [ to-array-word ] 2keep >c-array-quot
218 (( array -- byte-array )) define-declared ;
220 : c-array>quot ( type vocab -- quot )
223 nth-word 1quotation ,
227 : from-array-word ( name vocab -- word )
228 >r "c-" swap "-array>" 3append r> create ;
230 : define-from-array ( type vocab -- )
231 [ from-array-word ] 2keep c-array>quot
232 (( c-ptr n -- array )) define-declared ;
234 : define-primitive-type ( type name -- )
240 [ define-from-array ]
244 : expand-constants ( c-type -- c-type' )
245 #! We use word-def call instead of execute to get around
246 #! staging violations
248 unclip >r [ dup word? [ word-def call ] when ] map
252 : malloc-file-contents ( path -- alien len )
253 binary file-contents dup malloc-byte-array swap length ;
257 [ alien-cell ] >>getter
258 [ set-alien-cell ] >>setter
259 bootstrap-cell >>size
260 bootstrap-cell >>align
262 "alien_offset" >>unboxer
263 "void*" define-primitive-type
266 [ alien-signed-8 ] >>getter
267 [ set-alien-signed-8 ] >>setter
270 "box_signed_8" >>boxer
271 "to_signed_8" >>unboxer
272 "longlong" define-primitive-type
275 [ alien-unsigned-8 ] >>getter
276 [ set-alien-unsigned-8 ] >>setter
279 "box_unsigned_8" >>boxer
280 "to_unsigned_8" >>unboxer
281 "ulonglong" define-primitive-type
284 [ alien-signed-cell ] >>getter
285 [ set-alien-signed-cell ] >>setter
286 bootstrap-cell >>size
287 bootstrap-cell >>align
288 "box_signed_cell" >>boxer
289 "to_fixnum" >>unboxer
290 "long" define-primitive-type
293 [ alien-unsigned-cell ] >>getter
294 [ set-alien-unsigned-cell ] >>setter
295 bootstrap-cell >>size
296 bootstrap-cell >>align
297 "box_unsigned_cell" >>boxer
299 "ulong" define-primitive-type
302 [ alien-signed-4 ] >>getter
303 [ set-alien-signed-4 ] >>setter
306 "box_signed_4" >>boxer
307 "to_fixnum" >>unboxer
308 "int" define-primitive-type
311 [ alien-unsigned-4 ] >>getter
312 [ set-alien-unsigned-4 ] >>setter
315 "box_unsigned_4" >>boxer
317 "uint" define-primitive-type
320 [ alien-signed-2 ] >>getter
321 [ set-alien-signed-2 ] >>setter
324 "box_signed_2" >>boxer
325 "to_fixnum" >>unboxer
326 "short" define-primitive-type
329 [ alien-unsigned-2 ] >>getter
330 [ set-alien-unsigned-2 ] >>setter
333 "box_unsigned_2" >>boxer
335 "ushort" define-primitive-type
338 [ alien-signed-1 ] >>getter
339 [ set-alien-signed-1 ] >>setter
342 "box_signed_1" >>boxer
343 "to_fixnum" >>unboxer
344 "char" define-primitive-type
347 [ alien-unsigned-1 ] >>getter
348 [ set-alien-unsigned-1 ] >>setter
351 "box_unsigned_1" >>boxer
353 "uchar" define-primitive-type
356 [ alien-unsigned-4 zero? not ] >>getter
357 [ 1 0 ? set-alien-unsigned-4 ] >>setter
360 "box_boolean" >>boxer
361 "to_boolean" >>unboxer
362 "bool" define-primitive-type
365 [ alien-float ] >>getter
366 [ >r >r >float r> r> set-alien-float ] >>setter
371 single-float-regs >>reg-class
372 [ >float ] >>unboxer-quot
373 "float" define-primitive-type
376 [ alien-double ] >>getter
377 [ >r >r >float r> r> set-alien-double ] >>setter
381 "to_double" >>unboxer
382 double-float-regs >>reg-class
383 [ >float ] >>unboxer-quot
384 "double" define-primitive-type
386 os winnt? cpu x86.64? and "longlong" "long" ? "ptrdiff_t" typedef
388 "ulong" "size_t" typedef
389 ] with-compilation-unit