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 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
8 classes vocabs vocabs.loader words.symbol ;
25 TUPLE: abstract-c-type
26 { class class initial: object }
27 { boxed-class class initial: object }
28 { boxer-quot callable }
29 { unboxer-quot callable }
35 TUPLE: c-type < abstract-c-type
38 { rep initial: int-rep }
41 : <c-type> ( -- type )
47 c-types [ H{ } assoc-like ] change
50 ERROR: no-c-type name ;
52 PREDICATE: c-type-word < word
55 UNION: c-type-name string c-type-word ;
58 GENERIC: c-type ( name -- type ) foldable
60 GENERIC: resolve-pointer-type ( name -- c-type )
62 M: word resolve-pointer-type
63 dup "pointer-c-type" word-prop
64 [ ] [ drop void* ] ?if ;
65 M: string resolve-pointer-type
66 dup "*" append dup c-types get at
69 c-types get at dup c-type-name?
70 [ resolve-pointer-type ] [ drop void* ] if
73 : resolve-typedef ( name -- type )
74 dup c-type-name? [ c-type ] when ;
76 : parse-array-type ( name -- dims type )
78 [ [ "]" ?tail drop string>number ] map ] dip ;
80 M: string c-type ( name -- type )
81 CHAR: ] over member? [
82 parse-array-type prefix
84 dup c-types get at [ ] [
85 "*" ?tail [ resolve-pointer-type ] [ no-c-type ] if
90 "c-type" word-prop resolve-typedef ;
92 : void? ( c-type -- ? )
93 { void "void" } member? ;
95 GENERIC: c-struct? ( type -- ? )
99 M: c-type-name c-struct?
100 dup void? [ drop f ] [ c-type c-struct? ] if ;
102 ! These words being foldable means that words need to be
103 ! recompiled if a C type is redefined. Even so, folding the
104 ! size facilitates some optimizations.
105 GENERIC: c-type-class ( name -- class )
107 M: abstract-c-type c-type-class class>> ;
109 M: c-type-name c-type-class c-type c-type-class ;
111 GENERIC: c-type-boxed-class ( name -- class )
113 M: abstract-c-type c-type-boxed-class boxed-class>> ;
115 M: c-type-name c-type-boxed-class c-type c-type-boxed-class ;
117 GENERIC: c-type-boxer ( name -- boxer )
119 M: c-type c-type-boxer boxer>> ;
121 M: c-type-name c-type-boxer c-type c-type-boxer ;
123 GENERIC: c-type-boxer-quot ( name -- quot )
125 M: abstract-c-type c-type-boxer-quot boxer-quot>> ;
127 M: c-type-name c-type-boxer-quot c-type c-type-boxer-quot ;
129 GENERIC: c-type-unboxer ( name -- boxer )
131 M: c-type c-type-unboxer unboxer>> ;
133 M: c-type-name c-type-unboxer c-type c-type-unboxer ;
135 GENERIC: c-type-unboxer-quot ( name -- quot )
137 M: abstract-c-type c-type-unboxer-quot unboxer-quot>> ;
139 M: c-type-name c-type-unboxer-quot c-type c-type-unboxer-quot ;
141 GENERIC: c-type-rep ( name -- rep )
143 M: c-type c-type-rep rep>> ;
145 M: c-type-name c-type-rep c-type c-type-rep ;
147 GENERIC: c-type-getter ( name -- quot )
149 M: c-type c-type-getter getter>> ;
151 M: c-type-name c-type-getter c-type c-type-getter ;
153 GENERIC: c-type-setter ( name -- quot )
155 M: c-type c-type-setter setter>> ;
157 M: c-type-name c-type-setter c-type c-type-setter ;
159 GENERIC: c-type-align ( name -- n )
161 M: abstract-c-type c-type-align align>> ;
163 M: c-type-name c-type-align c-type c-type-align ;
165 GENERIC: c-type-stack-align? ( name -- ? )
167 M: c-type c-type-stack-align? stack-align?>> ;
169 M: c-type-name c-type-stack-align? c-type c-type-stack-align? ;
171 : c-type-box ( n type -- )
172 [ c-type-rep ] [ c-type-boxer [ "No boxer" throw ] unless* ] bi
175 : c-type-unbox ( n ctype -- )
176 [ c-type-rep ] [ c-type-unboxer [ "No unboxer" throw ] unless* ] bi
179 GENERIC: box-parameter ( n ctype -- )
181 M: c-type box-parameter c-type-box ;
183 M: c-type-name box-parameter c-type box-parameter ;
185 GENERIC: box-return ( ctype -- )
187 M: c-type box-return f swap c-type-box ;
189 M: c-type-name box-return c-type box-return ;
191 GENERIC: unbox-parameter ( n ctype -- )
193 M: c-type unbox-parameter c-type-unbox ;
195 M: c-type-name unbox-parameter c-type unbox-parameter ;
197 GENERIC: unbox-return ( ctype -- )
199 M: c-type unbox-return f swap c-type-unbox ;
201 M: c-type-name unbox-return c-type unbox-return ;
203 : little-endian? ( -- ? ) 1 <int> *char 1 = ; foldable
205 GENERIC: heap-size ( type -- size ) foldable
207 M: c-type-name heap-size c-type heap-size ;
209 M: abstract-c-type heap-size size>> ;
211 GENERIC: stack-size ( type -- size ) foldable
213 M: c-type-name stack-size c-type stack-size ;
215 M: c-type stack-size size>> cell align ;
217 GENERIC: byte-length ( seq -- n ) flushable
219 M: byte-array byte-length length ; inline
221 M: f byte-length drop 0 ; inline
225 : c-getter ( name -- quot )
227 [ "Cannot read struct fields with this type" throw ]
230 : c-type-getter-boxer ( name -- quot )
231 [ c-getter ] [ c-type-boxer-quot ] bi append ;
233 : c-setter ( name -- quot )
235 [ "Cannot write struct fields with this type" throw ]
238 : array-accessor ( type quot -- def )
240 \ swap , [ heap-size , [ * >fixnum ] % ] [ % ] bi*
243 GENERIC: typedef ( old new -- )
245 PREDICATE: typedef-word < c-type-word
246 "c-type" word-prop c-type-name? ;
248 M: string typedef ( old new -- ) c-types get set-at ;
249 M: word typedef ( old new -- )
251 [ nip define-symbol ]
253 [ swap "c-type" set-word-prop ]
255 swap dup c-type-name? [
257 "pointer-c-type" set-word-prop
262 TUPLE: long-long-type < c-type ;
264 : <long-long-type> ( -- type )
267 M: long-long-type unbox-parameter ( n type -- )
268 c-type-unboxer %unbox-long-long ;
270 M: long-long-type unbox-return ( type -- )
271 f swap unbox-parameter ;
273 M: long-long-type box-parameter ( n type -- )
274 c-type-boxer %box-long-long ;
276 M: long-long-type box-return ( type -- )
277 f swap box-parameter ;
279 : define-deref ( name -- )
280 [ CHAR: * prefix "alien.c-types" create ] [ c-getter 0 prefix ] bi
281 (( c-ptr -- value )) define-inline ;
283 : define-out ( name -- )
284 [ "alien.c-types" constructor-word ]
285 [ dup c-setter '[ _ heap-size <byte-array> [ 0 @ ] keep ] ] bi
286 (( value -- c-ptr )) define-inline ;
288 : define-primitive-type ( type name -- )
290 [ name>> define-deref ]
291 [ name>> define-out ]
294 : if-void ( type true false -- )
295 pick void? [ drop nip call ] [ nip call ] if ; inline
297 CONSTANT: primitive-types
309 ptrdiff_t intptr_t size_t
316 [ alien-cell ] >>getter
317 [ [ >c-ptr ] 2dip set-alien-cell ] >>setter
318 bootstrap-cell >>size
319 bootstrap-cell >>align
320 [ >c-ptr ] >>unboxer-quot
322 "alien_offset" >>unboxer
323 \ void* define-primitive-type
327 integer >>boxed-class
328 [ alien-signed-8 ] >>getter
329 [ set-alien-signed-8 ] >>setter
332 "box_signed_8" >>boxer
333 "to_signed_8" >>unboxer
334 \ longlong define-primitive-type
338 integer >>boxed-class
339 [ alien-unsigned-8 ] >>getter
340 [ set-alien-unsigned-8 ] >>setter
343 "box_unsigned_8" >>boxer
344 "to_unsigned_8" >>unboxer
345 \ ulonglong define-primitive-type
349 integer >>boxed-class
350 [ alien-signed-cell ] >>getter
351 [ set-alien-signed-cell ] >>setter
352 bootstrap-cell >>size
353 bootstrap-cell >>align
354 "box_signed_cell" >>boxer
355 "to_fixnum" >>unboxer
356 \ long define-primitive-type
360 integer >>boxed-class
361 [ alien-unsigned-cell ] >>getter
362 [ set-alien-unsigned-cell ] >>setter
363 bootstrap-cell >>size
364 bootstrap-cell >>align
365 "box_unsigned_cell" >>boxer
367 \ ulong define-primitive-type
371 integer >>boxed-class
372 [ alien-signed-4 ] >>getter
373 [ set-alien-signed-4 ] >>setter
376 "box_signed_4" >>boxer
377 "to_fixnum" >>unboxer
378 \ int define-primitive-type
382 integer >>boxed-class
383 [ alien-unsigned-4 ] >>getter
384 [ set-alien-unsigned-4 ] >>setter
387 "box_unsigned_4" >>boxer
389 \ uint define-primitive-type
394 [ alien-signed-2 ] >>getter
395 [ set-alien-signed-2 ] >>setter
398 "box_signed_2" >>boxer
399 "to_fixnum" >>unboxer
400 \ short define-primitive-type
405 [ alien-unsigned-2 ] >>getter
406 [ set-alien-unsigned-2 ] >>setter
409 "box_unsigned_2" >>boxer
411 \ ushort define-primitive-type
416 [ alien-signed-1 ] >>getter
417 [ set-alien-signed-1 ] >>setter
420 "box_signed_1" >>boxer
421 "to_fixnum" >>unboxer
422 \ char define-primitive-type
427 [ alien-unsigned-1 ] >>getter
428 [ set-alien-unsigned-1 ] >>setter
431 "box_unsigned_1" >>boxer
433 \ uchar define-primitive-type
436 [ alien-unsigned-1 0 = not ] >>getter
437 [ [ 1 0 ? ] 2dip set-alien-unsigned-1 ] >>setter
440 "box_boolean" >>boxer
441 "to_boolean" >>unboxer
442 \ bool define-primitive-type
446 math:float >>boxed-class
447 [ alien-float ] >>getter
448 [ [ >float ] 2dip set-alien-float ] >>setter
454 [ >float ] >>unboxer-quot
455 \ float define-primitive-type
459 math:float >>boxed-class
460 [ alien-double ] >>getter
461 [ [ >float ] 2dip set-alien-double ] >>setter
465 "to_double" >>unboxer
467 [ >float ] >>unboxer-quot
468 \ double define-primitive-type
470 \ long \ ptrdiff_t typedef
471 \ long \ intptr_t typedef
472 \ ulong \ size_t typedef
473 ] with-compilation-unit