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
17 { class class initial: object }
19 { boxer-quot callable }
21 { unboxer-quot callable }
24 { rep initial: int-rep }
29 : <c-type> ( -- type )
35 c-types [ H{ } assoc-like ] change
38 ERROR: no-c-type name ;
40 : (c-type) ( name -- type/f )
41 c-types get-global at dup [
42 dup string? [ (c-type) ] when
46 GENERIC: c-type ( name -- type ) foldable
48 : resolve-pointer-type ( name -- name )
49 c-types get at dup string?
50 [ "*" append ] [ drop "void*" ] if
53 : resolve-typedef ( name -- type )
54 dup string? [ c-type ] when ;
56 : parse-array-type ( name -- array )
58 [ [ "]" ?tail drop string>number ] map ] dip prefix ;
60 M: string c-type ( name -- type )
61 CHAR: ] over member? [
67 "*" ?tail [ resolve-pointer-type ] [ no-c-type ] if
71 GENERIC: c-type-class ( name -- class )
73 M: c-type c-type-class class>> ;
75 M: string c-type-class c-type c-type-class ;
77 GENERIC: c-type-boxer ( name -- boxer )
79 M: c-type c-type-boxer boxer>> ;
81 M: string c-type-boxer c-type c-type-boxer ;
83 GENERIC: c-type-boxer-quot ( name -- quot )
85 M: c-type c-type-boxer-quot boxer-quot>> ;
87 M: string c-type-boxer-quot c-type c-type-boxer-quot ;
89 GENERIC: c-type-unboxer ( name -- boxer )
91 M: c-type c-type-unboxer unboxer>> ;
93 M: string c-type-unboxer c-type c-type-unboxer ;
95 GENERIC: c-type-unboxer-quot ( name -- quot )
97 M: c-type c-type-unboxer-quot unboxer-quot>> ;
99 M: string c-type-unboxer-quot c-type c-type-unboxer-quot ;
101 GENERIC: c-type-rep ( name -- rep )
103 M: c-type c-type-rep rep>> ;
105 M: string c-type-rep c-type c-type-rep ;
107 GENERIC: c-type-getter ( name -- quot )
109 M: c-type c-type-getter getter>> ;
111 M: string c-type-getter c-type c-type-getter ;
113 GENERIC: c-type-setter ( name -- quot )
115 M: c-type c-type-setter setter>> ;
117 M: string c-type-setter c-type c-type-setter ;
119 GENERIC: c-type-align ( name -- n )
121 M: c-type c-type-align align>> ;
123 M: string c-type-align c-type c-type-align ;
125 GENERIC: c-type-stack-align? ( name -- ? )
127 M: c-type c-type-stack-align? stack-align?>> ;
129 M: string c-type-stack-align? c-type c-type-stack-align? ;
131 : c-type-box ( n type -- )
132 [ c-type-rep ] [ c-type-boxer [ "No boxer" throw ] unless* ] bi
135 : c-type-unbox ( n ctype -- )
136 [ c-type-rep ] [ c-type-unboxer [ "No unboxer" throw ] unless* ] bi
139 GENERIC: box-parameter ( n ctype -- )
141 M: c-type box-parameter c-type-box ;
143 M: string box-parameter c-type box-parameter ;
145 GENERIC: box-return ( ctype -- )
147 M: c-type box-return f swap c-type-box ;
149 M: string box-return c-type box-return ;
151 GENERIC: unbox-parameter ( n ctype -- )
153 M: c-type unbox-parameter c-type-unbox ;
155 M: string unbox-parameter c-type unbox-parameter ;
157 GENERIC: unbox-return ( ctype -- )
159 M: c-type unbox-return f swap c-type-unbox ;
161 M: string unbox-return c-type unbox-return ;
163 ! These words being foldable means that words need to be
164 ! recompiled if a C type is redefined. Even so, folding the
165 ! size facilitates some optimizations.
166 GENERIC: heap-size ( type -- size ) foldable
168 M: string heap-size c-type heap-size ;
170 M: c-type heap-size size>> ;
172 GENERIC: stack-size ( type -- size ) foldable
174 M: string stack-size c-type stack-size ;
176 M: c-type stack-size size>> cell align ;
178 GENERIC: byte-length ( seq -- n ) flushable
180 M: byte-array byte-length length ;
182 M: f byte-length drop 0 ;
184 : c-getter ( name -- quot )
186 [ "Cannot read struct fields with this type" throw ]
189 : c-type-getter-boxer ( name -- quot )
190 [ c-getter ] [ c-type-boxer-quot ] bi append ;
192 : c-setter ( name -- quot )
194 [ "Cannot write struct fields with this type" throw ]
197 : <c-array> ( n type -- array )
198 heap-size * <byte-array> ; inline
200 : <c-object> ( type -- array )
201 1 swap <c-array> ; inline
203 : malloc-array ( n type -- alien )
204 heap-size calloc ; inline
206 : malloc-object ( type -- alien )
207 1 swap malloc-array ; inline
209 : malloc-byte-array ( byte-array -- alien )
210 dup byte-length [ nip malloc dup ] 2keep memcpy ;
212 : memory>byte-array ( alien len -- byte-array )
213 [ nip (byte-array) dup ] 2keep memcpy ;
215 : malloc-string ( string encoding -- alien )
216 string>alien malloc-byte-array ;
218 M: memory-stream stream-read
220 [ index>> ] [ alien>> ] bi <displaced-alien>
221 swap memory>byte-array
222 ] [ [ + ] change-index drop ] 2bi ;
224 : byte-array>memory ( byte-array base -- )
225 swap dup byte-length memcpy ;
227 : array-accessor ( type quot -- def )
229 \ swap , [ heap-size , [ * >fixnum ] % ] [ % ] bi*
232 : typedef ( old new -- ) c-types get set-at ;
234 TUPLE: long-long-type < c-type ;
236 : <long-long-type> ( -- type )
239 M: long-long-type unbox-parameter ( n type -- )
240 c-type-unboxer %unbox-long-long ;
242 M: long-long-type unbox-return ( type -- )
243 f swap unbox-parameter ;
245 M: long-long-type box-parameter ( n type -- )
246 c-type-boxer %box-long-long ;
248 M: long-long-type box-return ( type -- )
249 f swap box-parameter ;
251 : define-deref ( name -- )
252 [ CHAR: * prefix "alien.c-types" create ] [ c-getter 0 prefix ] bi
253 (( c-ptr -- value )) define-inline ;
255 : define-out ( name -- )
256 [ "alien.c-types" constructor-word ]
257 [ dup c-setter '[ _ <c-object> [ 0 @ ] keep ] ] bi
258 (( value -- c-ptr )) define-inline ;
260 : >c-bool ( ? -- int ) 1 0 ? ; inline
262 : c-bool> ( int -- ? ) 0 = not ; inline
264 : define-primitive-type ( type name -- )
270 : expand-constants ( c-type -- c-type' )
275 def>> call( -- object )
281 : malloc-file-contents ( path -- alien len )
282 binary file-contents [ malloc-byte-array ] [ length ] bi ;
284 : if-void ( type true false -- )
285 pick "void" = [ drop nip call ] [ nip call ] if ; inline
287 CONSTANT: primitive-types
293 "longlong" "ulonglong"
301 [ alien-cell ] >>getter
302 [ [ >c-ptr ] 2dip set-alien-cell ] >>setter
303 bootstrap-cell >>size
304 bootstrap-cell >>align
305 [ >c-ptr ] >>unboxer-quot
307 "alien_offset" >>unboxer
308 "void*" define-primitive-type
312 [ alien-signed-8 ] >>getter
313 [ set-alien-signed-8 ] >>setter
316 "box_signed_8" >>boxer
317 "to_signed_8" >>unboxer
318 "longlong" define-primitive-type
322 [ alien-unsigned-8 ] >>getter
323 [ set-alien-unsigned-8 ] >>setter
326 "box_unsigned_8" >>boxer
327 "to_unsigned_8" >>unboxer
328 "ulonglong" define-primitive-type
332 [ alien-signed-cell ] >>getter
333 [ set-alien-signed-cell ] >>setter
334 bootstrap-cell >>size
335 bootstrap-cell >>align
336 "box_signed_cell" >>boxer
337 "to_fixnum" >>unboxer
338 "long" define-primitive-type
342 [ alien-unsigned-cell ] >>getter
343 [ set-alien-unsigned-cell ] >>setter
344 bootstrap-cell >>size
345 bootstrap-cell >>align
346 "box_unsigned_cell" >>boxer
348 "ulong" define-primitive-type
352 [ alien-signed-4 ] >>getter
353 [ set-alien-signed-4 ] >>setter
356 "box_signed_4" >>boxer
357 "to_fixnum" >>unboxer
358 "int" define-primitive-type
362 [ alien-unsigned-4 ] >>getter
363 [ set-alien-unsigned-4 ] >>setter
366 "box_unsigned_4" >>boxer
368 "uint" define-primitive-type
372 [ alien-signed-2 ] >>getter
373 [ set-alien-signed-2 ] >>setter
376 "box_signed_2" >>boxer
377 "to_fixnum" >>unboxer
378 "short" define-primitive-type
382 [ alien-unsigned-2 ] >>getter
383 [ set-alien-unsigned-2 ] >>setter
386 "box_unsigned_2" >>boxer
388 "ushort" define-primitive-type
392 [ alien-signed-1 ] >>getter
393 [ set-alien-signed-1 ] >>setter
396 "box_signed_1" >>boxer
397 "to_fixnum" >>unboxer
398 "char" define-primitive-type
402 [ alien-unsigned-1 ] >>getter
403 [ set-alien-unsigned-1 ] >>setter
406 "box_unsigned_1" >>boxer
408 "uchar" define-primitive-type
411 [ alien-unsigned-1 c-bool> ] >>getter
412 [ [ >c-bool ] 2dip set-alien-unsigned-1 ] >>setter
415 "box_boolean" >>boxer
416 "to_boolean" >>unboxer
417 "bool" define-primitive-type
421 [ alien-float ] >>getter
422 [ [ >float ] 2dip set-alien-float ] >>setter
427 single-float-rep >>rep
428 [ >float ] >>unboxer-quot
429 "float" define-primitive-type
433 [ alien-double ] >>getter
434 [ [ >float ] 2dip set-alien-double ] >>setter
438 "to_double" >>unboxer
439 double-float-rep >>rep
440 [ >float ] >>unboxer-quot
441 "double" define-primitive-type
443 "long" "ptrdiff_t" typedef
444 "long" "intptr_t" typedef
445 "ulong" "size_t" typedef
446 ] with-compilation-unit