1 ! Copyright (C) 2004, 2009 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: byte-arrays arrays assocs kernel kernel.private libc math
4 namespaces make parser sequences strings words splitting math.parser
5 cpu.architecture alien alien.accessors alien.strings quotations
6 layouts system compiler.units io io.files io.encodings.binary
7 io.streams.memory accessors combinators effects continuations fry
14 : little-endian? ( -- ? ) 1 <int> *char 1 = ; foldable
16 TUPLE: abstract-c-type
17 { class class initial: object }
18 { boxed-class class initial: object }
19 { boxer-quot callable }
20 { unboxer-quot callable }
26 TUPLE: c-type < abstract-c-type
29 { rep initial: int-rep }
32 : <c-type> ( -- type )
38 c-types [ H{ } assoc-like ] change
41 ERROR: no-c-type name ;
43 : (c-type) ( name -- type/f )
44 c-types get-global at dup [
45 dup string? [ (c-type) ] when
49 GENERIC: c-type ( name -- type ) foldable
51 : resolve-pointer-type ( name -- name )
52 c-types get at dup string?
53 [ "*" append ] [ drop "void*" ] if
56 : resolve-typedef ( name -- type )
57 dup string? [ c-type ] when ;
59 : parse-array-type ( name -- array )
61 [ [ "]" ?tail drop string>number ] map ] dip prefix ;
63 M: string c-type ( name -- type )
64 CHAR: ] over member? [
70 "*" ?tail [ resolve-pointer-type ] [ no-c-type ] if
74 GENERIC: c-type-class ( name -- class )
76 M: abstract-c-type c-type-class class>> ;
78 M: string c-type-class c-type c-type-class ;
80 GENERIC: c-type-boxed-class ( name -- class )
82 M: abstract-c-type c-type-boxed-class boxed-class>> ;
84 M: string c-type-boxed-class c-type c-type-boxed-class ;
86 GENERIC: c-type-boxer ( name -- boxer )
88 M: c-type c-type-boxer boxer>> ;
90 M: string c-type-boxer c-type c-type-boxer ;
92 GENERIC: c-type-boxer-quot ( name -- quot )
94 M: abstract-c-type c-type-boxer-quot boxer-quot>> ;
96 M: string c-type-boxer-quot c-type c-type-boxer-quot ;
98 GENERIC: c-type-unboxer ( name -- boxer )
100 M: c-type c-type-unboxer unboxer>> ;
102 M: string c-type-unboxer c-type c-type-unboxer ;
104 GENERIC: c-type-unboxer-quot ( name -- quot )
106 M: abstract-c-type c-type-unboxer-quot unboxer-quot>> ;
108 M: string c-type-unboxer-quot c-type c-type-unboxer-quot ;
110 GENERIC: c-type-rep ( name -- rep )
112 M: c-type c-type-rep rep>> ;
114 M: string c-type-rep c-type c-type-rep ;
116 GENERIC: c-type-getter ( name -- quot )
118 M: c-type c-type-getter getter>> ;
120 M: string c-type-getter c-type c-type-getter ;
122 GENERIC: c-type-setter ( name -- quot )
124 M: c-type c-type-setter setter>> ;
126 M: string c-type-setter c-type c-type-setter ;
128 GENERIC: c-type-align ( name -- n )
130 M: abstract-c-type c-type-align align>> ;
132 M: string c-type-align c-type c-type-align ;
134 GENERIC: c-type-stack-align? ( name -- ? )
136 M: c-type c-type-stack-align? stack-align?>> ;
138 M: string c-type-stack-align? c-type c-type-stack-align? ;
140 : c-type-box ( n type -- )
141 [ c-type-rep ] [ c-type-boxer [ "No boxer" throw ] unless* ] bi
144 : c-type-unbox ( n ctype -- )
145 [ c-type-rep ] [ c-type-unboxer [ "No unboxer" throw ] unless* ] bi
148 GENERIC: box-parameter ( n ctype -- )
150 M: c-type box-parameter c-type-box ;
152 M: string box-parameter c-type box-parameter ;
154 GENERIC: box-return ( ctype -- )
156 M: c-type box-return f swap c-type-box ;
158 M: string box-return c-type box-return ;
160 GENERIC: unbox-parameter ( n ctype -- )
162 M: c-type unbox-parameter c-type-unbox ;
164 M: string unbox-parameter c-type unbox-parameter ;
166 GENERIC: unbox-return ( ctype -- )
168 M: c-type unbox-return f swap c-type-unbox ;
170 M: string unbox-return c-type unbox-return ;
172 ! These words being foldable means that words need to be
173 ! recompiled if a C type is redefined. Even so, folding the
174 ! size facilitates some optimizations.
175 GENERIC: heap-size ( type -- size ) foldable
177 M: string heap-size c-type heap-size ;
179 M: abstract-c-type heap-size size>> ;
181 GENERIC: stack-size ( type -- size ) foldable
183 M: string stack-size c-type stack-size ;
185 M: c-type stack-size size>> cell align ;
187 GENERIC: byte-length ( seq -- n ) flushable
189 M: byte-array byte-length length ;
191 M: f byte-length drop 0 ;
193 : c-getter ( name -- quot )
195 [ "Cannot read struct fields with this type" throw ]
198 : c-type-getter-boxer ( name -- quot )
199 [ c-getter ] [ c-type-boxer-quot ] bi append ;
201 : c-setter ( name -- quot )
203 [ "Cannot write struct fields with this type" throw ]
206 : <c-array> ( n type -- array )
207 heap-size * <byte-array> ; inline
209 : <c-object> ( type -- array )
210 1 swap <c-array> ; inline
212 : malloc-array ( n type -- alien )
213 heap-size calloc ; inline
215 : malloc-object ( type -- alien )
216 1 swap malloc-array ; inline
218 : malloc-byte-array ( byte-array -- alien )
219 dup byte-length [ nip malloc dup ] 2keep memcpy ;
221 : memory>byte-array ( alien len -- byte-array )
222 [ nip (byte-array) dup ] 2keep memcpy ;
224 : malloc-string ( string encoding -- alien )
225 string>alien malloc-byte-array ;
227 M: memory-stream stream-read
229 [ index>> ] [ alien>> ] bi <displaced-alien>
230 swap memory>byte-array
231 ] [ [ + ] change-index drop ] 2bi ;
233 : byte-array>memory ( byte-array base -- )
234 swap dup byte-length memcpy ;
236 : array-accessor ( type quot -- def )
238 \ swap , [ heap-size , [ * >fixnum ] % ] [ % ] bi*
241 : typedef ( old new -- ) c-types get set-at ;
243 TUPLE: long-long-type < c-type ;
245 : <long-long-type> ( -- type )
248 M: long-long-type unbox-parameter ( n type -- )
249 c-type-unboxer %unbox-long-long ;
251 M: long-long-type unbox-return ( type -- )
252 f swap unbox-parameter ;
254 M: long-long-type box-parameter ( n type -- )
255 c-type-boxer %box-long-long ;
257 M: long-long-type box-return ( type -- )
258 f swap box-parameter ;
260 : define-deref ( name -- )
261 [ CHAR: * prefix "alien.c-types" create ] [ c-getter 0 prefix ] bi
262 (( c-ptr -- value )) define-inline ;
264 : define-out ( name -- )
265 [ "alien.c-types" constructor-word ]
266 [ dup c-setter '[ _ <c-object> [ 0 @ ] keep ] ] bi
267 (( value -- c-ptr )) define-inline ;
269 : >c-bool ( ? -- int ) 1 0 ? ; inline
271 : c-bool> ( int -- ? ) 0 = not ; inline
273 : define-primitive-type ( type name -- )
279 : expand-constants ( c-type -- c-type' )
284 def>> call( -- object )
290 : malloc-file-contents ( path -- alien len )
291 binary file-contents [ malloc-byte-array ] [ length ] bi ;
293 : if-void ( type true false -- )
294 pick "void" = [ drop nip call ] [ nip call ] if ; inline
296 CONSTANT: primitive-types
302 "longlong" "ulonglong"
311 [ alien-cell ] >>getter
312 [ [ >c-ptr ] 2dip set-alien-cell ] >>setter
313 bootstrap-cell >>size
314 bootstrap-cell >>align
315 [ >c-ptr ] >>unboxer-quot
317 "alien_offset" >>unboxer
318 "void*" define-primitive-type
322 integer >>boxed-class
323 [ alien-signed-8 ] >>getter
324 [ set-alien-signed-8 ] >>setter
327 "box_signed_8" >>boxer
328 "to_signed_8" >>unboxer
329 "longlong" define-primitive-type
333 integer >>boxed-class
334 [ alien-unsigned-8 ] >>getter
335 [ set-alien-unsigned-8 ] >>setter
338 "box_unsigned_8" >>boxer
339 "to_unsigned_8" >>unboxer
340 "ulonglong" define-primitive-type
344 integer >>boxed-class
345 [ alien-signed-cell ] >>getter
346 [ set-alien-signed-cell ] >>setter
347 bootstrap-cell >>size
348 bootstrap-cell >>align
349 "box_signed_cell" >>boxer
350 "to_fixnum" >>unboxer
351 "long" define-primitive-type
355 integer >>boxed-class
356 [ alien-unsigned-cell ] >>getter
357 [ set-alien-unsigned-cell ] >>setter
358 bootstrap-cell >>size
359 bootstrap-cell >>align
360 "box_unsigned_cell" >>boxer
362 "ulong" define-primitive-type
366 integer >>boxed-class
367 [ alien-signed-4 ] >>getter
368 [ set-alien-signed-4 ] >>setter
371 "box_signed_4" >>boxer
372 "to_fixnum" >>unboxer
373 "int" define-primitive-type
377 integer >>boxed-class
378 [ alien-unsigned-4 ] >>getter
379 [ set-alien-unsigned-4 ] >>setter
382 "box_unsigned_4" >>boxer
384 "uint" define-primitive-type
389 [ alien-signed-2 ] >>getter
390 [ set-alien-signed-2 ] >>setter
393 "box_signed_2" >>boxer
394 "to_fixnum" >>unboxer
395 "short" define-primitive-type
400 [ alien-unsigned-2 ] >>getter
401 [ set-alien-unsigned-2 ] >>setter
404 "box_unsigned_2" >>boxer
406 "ushort" define-primitive-type
411 [ alien-signed-1 ] >>getter
412 [ set-alien-signed-1 ] >>setter
415 "box_signed_1" >>boxer
416 "to_fixnum" >>unboxer
417 "char" define-primitive-type
422 [ alien-unsigned-1 ] >>getter
423 [ set-alien-unsigned-1 ] >>setter
426 "box_unsigned_1" >>boxer
428 "uchar" define-primitive-type
431 [ alien-unsigned-1 c-bool> ] >>getter
432 [ [ >c-bool ] 2dip set-alien-unsigned-1 ] >>setter
435 "box_boolean" >>boxer
436 "to_boolean" >>unboxer
437 "bool" define-primitive-type
442 [ alien-float ] >>getter
443 [ [ >float ] 2dip set-alien-float ] >>setter
448 single-float-rep >>rep
449 [ >float ] >>unboxer-quot
450 "float" define-primitive-type
455 [ alien-double ] >>getter
456 [ [ >float ] 2dip set-alien-double ] >>setter
460 "to_double" >>unboxer
461 double-float-rep >>rep
462 [ >float ] >>unboxer-quot
463 "double" define-primitive-type
465 "long" "ptrdiff_t" typedef
466 "long" "intptr_t" typedef
467 "ulong" "size_t" typedef
468 ] with-compilation-unit