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 math.order math.parser namespaces make parser sequences strings
5 words splitting cpu.architecture alien alien.accessors
6 alien.strings quotations layouts system compiler.units io
7 io.files io.encodings.binary io.streams.memory accessors
8 combinators effects continuations fry classes vocabs
9 vocabs.loader words.symbol ;
26 TUPLE: abstract-c-type
27 { class class initial: object }
28 { boxed-class class initial: object }
29 { boxer-quot callable }
30 { unboxer-quot callable }
36 TUPLE: c-type < abstract-c-type
39 { rep initial: int-rep }
42 : <c-type> ( -- type )
48 c-types [ H{ } assoc-like ] change
51 ERROR: no-c-type name ;
53 PREDICATE: c-type-word < word
56 UNION: c-type-name string c-type-word ;
59 GENERIC: c-type ( name -- type ) foldable
61 GENERIC: resolve-pointer-type ( name -- c-type )
63 M: word resolve-pointer-type
64 dup "pointer-c-type" word-prop
65 [ ] [ drop void* ] ?if ;
66 M: string resolve-pointer-type
67 dup "*" append dup c-types get at
70 c-types get at dup c-type-name?
71 [ resolve-pointer-type ] [ drop void* ] if
74 : resolve-typedef ( name -- type )
75 dup c-type-name? [ c-type ] when ;
77 : parse-array-type ( name -- dims type )
79 [ [ "]" ?tail drop string>number ] map ] dip ;
81 M: string c-type ( name -- type )
82 CHAR: ] over member? [
83 parse-array-type prefix
85 dup c-types get at [ ] [
86 "*" ?tail [ resolve-pointer-type ] [ no-c-type ] if
91 "c-type" word-prop resolve-typedef ;
93 : void? ( c-type -- ? )
94 { void "void" } member? ;
96 GENERIC: c-struct? ( type -- ? )
100 M: c-type-name c-struct?
101 dup void? [ drop f ] [ c-type c-struct? ] if ;
103 ! These words being foldable means that words need to be
104 ! recompiled if a C type is redefined. Even so, folding the
105 ! size facilitates some optimizations.
106 GENERIC: c-type-class ( name -- class )
108 M: abstract-c-type c-type-class class>> ;
110 M: c-type-name c-type-class c-type c-type-class ;
112 GENERIC: c-type-boxed-class ( name -- class )
114 M: abstract-c-type c-type-boxed-class boxed-class>> ;
116 M: c-type-name c-type-boxed-class c-type c-type-boxed-class ;
118 GENERIC: c-type-boxer ( name -- boxer )
120 M: c-type c-type-boxer boxer>> ;
122 M: c-type-name c-type-boxer c-type c-type-boxer ;
124 GENERIC: c-type-boxer-quot ( name -- quot )
126 M: abstract-c-type c-type-boxer-quot boxer-quot>> ;
128 M: c-type-name c-type-boxer-quot c-type c-type-boxer-quot ;
130 GENERIC: c-type-unboxer ( name -- boxer )
132 M: c-type c-type-unboxer unboxer>> ;
134 M: c-type-name c-type-unboxer c-type c-type-unboxer ;
136 GENERIC: c-type-unboxer-quot ( name -- quot )
138 M: abstract-c-type c-type-unboxer-quot unboxer-quot>> ;
140 M: c-type-name c-type-unboxer-quot c-type c-type-unboxer-quot ;
142 GENERIC: c-type-rep ( name -- rep )
144 M: c-type c-type-rep rep>> ;
146 M: c-type-name c-type-rep c-type c-type-rep ;
148 GENERIC: c-type-getter ( name -- quot )
150 M: c-type c-type-getter getter>> ;
152 M: c-type-name c-type-getter c-type c-type-getter ;
154 GENERIC: c-type-setter ( name -- quot )
156 M: c-type c-type-setter setter>> ;
158 M: c-type-name c-type-setter c-type c-type-setter ;
160 GENERIC: c-type-align ( name -- n )
162 M: abstract-c-type c-type-align align>> ;
164 M: c-type-name c-type-align c-type c-type-align ;
166 GENERIC: c-type-stack-align? ( name -- ? )
168 M: c-type c-type-stack-align? stack-align?>> ;
170 M: c-type-name c-type-stack-align? c-type c-type-stack-align? ;
172 : c-type-box ( n type -- )
173 [ c-type-rep ] [ c-type-boxer [ "No boxer" throw ] unless* ] bi
176 : c-type-unbox ( n ctype -- )
177 [ c-type-rep ] [ c-type-unboxer [ "No unboxer" throw ] unless* ] bi
180 GENERIC: box-parameter ( n ctype -- )
182 M: c-type box-parameter c-type-box ;
184 M: c-type-name box-parameter c-type box-parameter ;
186 GENERIC: box-return ( ctype -- )
188 M: c-type box-return f swap c-type-box ;
190 M: c-type-name box-return c-type box-return ;
192 GENERIC: unbox-parameter ( n ctype -- )
194 M: c-type unbox-parameter c-type-unbox ;
196 M: c-type-name unbox-parameter c-type unbox-parameter ;
198 GENERIC: unbox-return ( ctype -- )
200 M: c-type unbox-return f swap c-type-unbox ;
202 M: c-type-name unbox-return c-type unbox-return ;
204 : little-endian? ( -- ? ) 1 <int> *char 1 = ; foldable
206 GENERIC: heap-size ( type -- size ) foldable
208 M: c-type-name heap-size c-type heap-size ;
210 M: abstract-c-type heap-size size>> ;
212 GENERIC: stack-size ( type -- size ) foldable
214 M: c-type-name stack-size c-type stack-size ;
216 M: c-type stack-size size>> cell align ;
218 GENERIC: byte-length ( seq -- n ) flushable
220 M: byte-array byte-length length ; inline
222 M: f byte-length drop 0 ; inline
226 : c-getter ( name -- quot )
228 [ "Cannot read struct fields with this type" throw ]
231 : c-type-getter-boxer ( name -- quot )
232 [ c-getter ] [ c-type-boxer-quot ] bi append ;
234 : c-setter ( name -- quot )
236 [ "Cannot write struct fields with this type" throw ]
239 : array-accessor ( type quot -- def )
241 \ swap , [ heap-size , [ * >fixnum ] % ] [ % ] bi*
244 GENERIC: typedef ( old new -- )
246 PREDICATE: typedef-word < c-type-word
247 "c-type" word-prop c-type-name? ;
249 M: string typedef ( old new -- ) c-types get set-at ;
250 M: word typedef ( old new -- )
252 [ nip define-symbol ]
254 [ swap "c-type" set-word-prop ]
256 swap dup c-type-name? [
258 "pointer-c-type" set-word-prop
263 TUPLE: long-long-type < c-type ;
265 : <long-long-type> ( -- type )
268 M: long-long-type unbox-parameter ( n type -- )
269 c-type-unboxer %unbox-long-long ;
271 M: long-long-type unbox-return ( type -- )
272 f swap unbox-parameter ;
274 M: long-long-type box-parameter ( n type -- )
275 c-type-boxer %box-long-long ;
277 M: long-long-type box-return ( type -- )
278 f swap box-parameter ;
280 : define-deref ( name -- )
281 [ CHAR: * prefix "alien.c-types" create ] [ c-getter 0 prefix ] bi
282 (( c-ptr -- value )) define-inline ;
284 : define-out ( name -- )
285 [ "alien.c-types" constructor-word ]
286 [ dup c-setter '[ _ heap-size <byte-array> [ 0 @ ] keep ] ] bi
287 (( value -- c-ptr )) define-inline ;
289 : define-primitive-type ( type name -- )
291 [ name>> define-deref ]
292 [ name>> define-out ]
295 : if-void ( type true false -- )
296 pick void? [ drop nip call ] [ nip call ] if ; inline
298 CONSTANT: primitive-types
310 ptrdiff_t intptr_t size_t
317 [ alien-cell ] >>getter
318 [ [ >c-ptr ] 2dip set-alien-cell ] >>setter
319 bootstrap-cell >>size
320 bootstrap-cell >>align
321 [ >c-ptr ] >>unboxer-quot
323 "alien_offset" >>unboxer
324 \ void* define-primitive-type
328 integer >>boxed-class
329 [ alien-signed-8 ] >>getter
330 [ set-alien-signed-8 ] >>setter
333 "box_signed_8" >>boxer
334 "to_signed_8" >>unboxer
335 \ longlong define-primitive-type
339 integer >>boxed-class
340 [ alien-unsigned-8 ] >>getter
341 [ set-alien-unsigned-8 ] >>setter
344 "box_unsigned_8" >>boxer
345 "to_unsigned_8" >>unboxer
346 \ ulonglong define-primitive-type
350 integer >>boxed-class
351 [ alien-signed-cell ] >>getter
352 [ set-alien-signed-cell ] >>setter
353 bootstrap-cell >>size
354 bootstrap-cell >>align
355 "box_signed_cell" >>boxer
356 "to_fixnum" >>unboxer
357 \ long define-primitive-type
361 integer >>boxed-class
362 [ alien-unsigned-cell ] >>getter
363 [ set-alien-unsigned-cell ] >>setter
364 bootstrap-cell >>size
365 bootstrap-cell >>align
366 "box_unsigned_cell" >>boxer
368 \ ulong define-primitive-type
372 integer >>boxed-class
373 [ alien-signed-4 ] >>getter
374 [ set-alien-signed-4 ] >>setter
377 "box_signed_4" >>boxer
378 "to_fixnum" >>unboxer
379 \ int define-primitive-type
383 integer >>boxed-class
384 [ alien-unsigned-4 ] >>getter
385 [ set-alien-unsigned-4 ] >>setter
388 "box_unsigned_4" >>boxer
390 \ uint define-primitive-type
395 [ alien-signed-2 ] >>getter
396 [ set-alien-signed-2 ] >>setter
399 "box_signed_2" >>boxer
400 "to_fixnum" >>unboxer
401 \ short define-primitive-type
406 [ alien-unsigned-2 ] >>getter
407 [ set-alien-unsigned-2 ] >>setter
410 "box_unsigned_2" >>boxer
412 \ ushort define-primitive-type
417 [ alien-signed-1 ] >>getter
418 [ set-alien-signed-1 ] >>setter
421 "box_signed_1" >>boxer
422 "to_fixnum" >>unboxer
423 \ char define-primitive-type
428 [ alien-unsigned-1 ] >>getter
429 [ set-alien-unsigned-1 ] >>setter
432 "box_unsigned_1" >>boxer
434 \ uchar define-primitive-type
437 [ alien-unsigned-1 0 = not ] >>getter
438 [ [ 1 0 ? ] 2dip set-alien-unsigned-1 ] >>setter
441 "box_boolean" >>boxer
442 "to_boolean" >>unboxer
443 \ bool define-primitive-type
447 math:float >>boxed-class
448 [ alien-float ] >>getter
449 [ [ >float ] 2dip set-alien-float ] >>setter
455 [ >float ] >>unboxer-quot
456 \ float define-primitive-type
460 math:float >>boxed-class
461 [ alien-double ] >>getter
462 [ [ >float ] 2dip set-alien-double ] >>setter
466 "to_double" >>unboxer
468 [ >float ] >>unboxer-quot
469 \ double define-primitive-type
471 \ long \ ptrdiff_t typedef
472 \ long \ intptr_t typedef
473 \ ulong \ size_t typedef
474 ] with-compilation-unit
476 M: char-16-rep rep-component-type drop char ;
477 M: uchar-16-rep rep-component-type drop uchar ;
478 M: short-8-rep rep-component-type drop short ;
479 M: ushort-8-rep rep-component-type drop ushort ;
480 M: int-4-rep rep-component-type drop int ;
481 M: uint-4-rep rep-component-type drop uint ;
482 M: longlong-2-rep rep-component-type drop longlong ;
483 M: ulonglong-2-rep rep-component-type drop ulonglong ;
484 M: float-4-rep rep-component-type drop float ;
485 M: double-2-rep rep-component-type drop double ;
487 : (unsigned-interval) ( bytes -- from to ) [ 0 ] dip 8 * 2^ 1 - ; foldable
488 : unsigned-interval ( c-type -- from to ) heap-size (unsigned-interval) ; foldable
489 : (signed-interval) ( bytes -- from to ) 8 * 1 - 2^ [ neg ] [ 1 - ] bi ; foldable
490 : signed-interval ( c-type -- from to ) heap-size (signed-interval) ; foldable
492 : c-type-interval ( c-type -- from to )
494 { [ dup { float double } memq? ] [ drop -1/0. 1/0. ] }
495 { [ dup { char short int long longlong } memq? ] [ signed-interval ] }
496 { [ dup { uchar ushort uint ulong ulonglong } memq? ] [ unsigned-interval ] }
499 : c-type-clamp ( value c-type -- value' ) c-type-interval clamp ; inline