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 { reg-class initial: int-regs }
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-reg-class ( name -- reg-class )
103 M: c-type c-type-reg-class reg-class>> ;
105 M: string c-type-reg-class c-type c-type-reg-class ;
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 -- )
133 swap c-type-boxer [ "No boxer" throw ] unless*
136 : c-type-unbox ( n ctype -- )
138 swap c-type-unboxer [ "No unboxer" throw ] unless*
141 GENERIC: box-parameter ( n ctype -- )
143 M: c-type box-parameter c-type-box ;
145 M: string box-parameter c-type box-parameter ;
147 GENERIC: box-return ( ctype -- )
149 M: c-type box-return f swap c-type-box ;
151 M: string box-return c-type box-return ;
153 GENERIC: unbox-parameter ( n ctype -- )
155 M: c-type unbox-parameter c-type-unbox ;
157 M: string unbox-parameter c-type unbox-parameter ;
159 GENERIC: unbox-return ( ctype -- )
161 M: c-type unbox-return f swap c-type-unbox ;
163 M: string unbox-return c-type unbox-return ;
165 ! These words being foldable means that words need to be
166 ! recompiled if a C type is redefined. Even so, folding the
167 ! size facilitates some optimizations.
168 GENERIC: heap-size ( type -- size ) foldable
170 M: string heap-size c-type heap-size ;
172 M: c-type heap-size size>> ;
174 GENERIC: stack-size ( type -- size ) foldable
176 M: string stack-size c-type stack-size ;
178 M: c-type stack-size size>> cell align ;
180 GENERIC: byte-length ( seq -- n ) flushable
182 M: byte-array byte-length length ;
184 M: f byte-length drop 0 ;
186 : c-getter ( name -- quot )
188 [ "Cannot read struct fields with this type" throw ]
191 : c-type-getter-boxer ( name -- quot )
192 [ c-getter ] [ c-type-boxer-quot ] bi append ;
194 : c-setter ( name -- quot )
196 [ "Cannot write struct fields with this type" throw ]
199 : <c-array> ( n type -- array )
200 heap-size * <byte-array> ; inline
202 : <c-object> ( type -- array )
203 1 swap <c-array> ; inline
205 : malloc-array ( n type -- alien )
206 heap-size calloc ; inline
208 : malloc-object ( type -- alien )
209 1 swap malloc-array ; inline
211 : malloc-byte-array ( byte-array -- alien )
212 dup byte-length [ nip malloc dup ] 2keep memcpy ;
214 : memory>byte-array ( alien len -- byte-array )
215 [ nip (byte-array) dup ] 2keep memcpy ;
217 : malloc-string ( string encoding -- alien )
218 string>alien malloc-byte-array ;
220 M: memory-stream stream-read
222 [ index>> ] [ alien>> ] bi <displaced-alien>
223 swap memory>byte-array
224 ] [ [ + ] change-index drop ] 2bi ;
226 : byte-array>memory ( byte-array base -- )
227 swap dup byte-length memcpy ;
229 : array-accessor ( type quot -- def )
231 \ swap , [ heap-size , [ * >fixnum ] % ] [ % ] bi*
234 : typedef ( old new -- ) c-types get set-at ;
236 TUPLE: long-long-type < c-type ;
238 : <long-long-type> ( -- type )
241 M: long-long-type unbox-parameter ( n type -- )
242 c-type-unboxer %unbox-long-long ;
244 M: long-long-type unbox-return ( type -- )
245 f swap unbox-parameter ;
247 M: long-long-type box-parameter ( n type -- )
248 c-type-boxer %box-long-long ;
250 M: long-long-type box-return ( type -- )
251 f swap box-parameter ;
253 : define-deref ( name -- )
254 [ CHAR: * prefix "alien.c-types" create ] [ c-getter 0 prefix ] bi
255 (( c-ptr -- value )) define-inline ;
257 : define-out ( name -- )
258 [ "alien.c-types" constructor-word ]
259 [ dup c-setter '[ _ <c-object> [ 0 @ ] keep ] ] bi
260 (( value -- c-ptr )) define-inline ;
262 : >c-bool ( ? -- int ) 1 0 ? ; inline
264 : c-bool> ( int -- ? ) 0 = not ; inline
266 : define-primitive-type ( type name -- )
272 : expand-constants ( c-type -- c-type' )
277 def>> call( -- object )
283 : malloc-file-contents ( path -- alien len )
284 binary file-contents [ malloc-byte-array ] [ length ] bi ;
286 : if-void ( type true false -- )
287 pick "void" = [ drop nip call ] [ nip call ] if ; inline
289 CONSTANT: primitive-types
295 "longlong" "ulonglong"
303 [ alien-cell ] >>getter
304 [ [ >c-ptr ] 2dip set-alien-cell ] >>setter
305 bootstrap-cell >>size
306 bootstrap-cell >>align
307 [ >c-ptr ] >>unboxer-quot
309 "alien_offset" >>unboxer
310 "void*" define-primitive-type
314 [ alien-signed-8 ] >>getter
315 [ set-alien-signed-8 ] >>setter
318 "box_signed_8" >>boxer
319 "to_signed_8" >>unboxer
320 "longlong" define-primitive-type
324 [ alien-unsigned-8 ] >>getter
325 [ set-alien-unsigned-8 ] >>setter
328 "box_unsigned_8" >>boxer
329 "to_unsigned_8" >>unboxer
330 "ulonglong" define-primitive-type
334 [ alien-signed-cell ] >>getter
335 [ set-alien-signed-cell ] >>setter
336 bootstrap-cell >>size
337 bootstrap-cell >>align
338 "box_signed_cell" >>boxer
339 "to_fixnum" >>unboxer
340 "long" define-primitive-type
344 [ alien-unsigned-cell ] >>getter
345 [ set-alien-unsigned-cell ] >>setter
346 bootstrap-cell >>size
347 bootstrap-cell >>align
348 "box_unsigned_cell" >>boxer
350 "ulong" define-primitive-type
354 [ alien-signed-4 ] >>getter
355 [ set-alien-signed-4 ] >>setter
358 "box_signed_4" >>boxer
359 "to_fixnum" >>unboxer
360 "int" define-primitive-type
364 [ alien-unsigned-4 ] >>getter
365 [ set-alien-unsigned-4 ] >>setter
368 "box_unsigned_4" >>boxer
370 "uint" define-primitive-type
374 [ alien-signed-2 ] >>getter
375 [ set-alien-signed-2 ] >>setter
378 "box_signed_2" >>boxer
379 "to_fixnum" >>unboxer
380 "short" define-primitive-type
384 [ alien-unsigned-2 ] >>getter
385 [ set-alien-unsigned-2 ] >>setter
388 "box_unsigned_2" >>boxer
390 "ushort" define-primitive-type
394 [ alien-signed-1 ] >>getter
395 [ set-alien-signed-1 ] >>setter
398 "box_signed_1" >>boxer
399 "to_fixnum" >>unboxer
400 "char" define-primitive-type
404 [ alien-unsigned-1 ] >>getter
405 [ set-alien-unsigned-1 ] >>setter
408 "box_unsigned_1" >>boxer
410 "uchar" define-primitive-type
413 [ alien-unsigned-1 c-bool> ] >>getter
414 [ [ >c-bool ] 2dip set-alien-unsigned-1 ] >>setter
417 "box_boolean" >>boxer
418 "to_boolean" >>unboxer
419 "bool" define-primitive-type
423 [ alien-float ] >>getter
424 [ [ >float ] 2dip set-alien-float ] >>setter
429 single-float-regs >>reg-class
430 [ >float ] >>unboxer-quot
431 "float" define-primitive-type
435 [ alien-double ] >>getter
436 [ [ >float ] 2dip set-alien-double ] >>setter
440 "to_double" >>unboxer
441 double-float-regs >>reg-class
442 [ >float ] >>unboxer-quot
443 "double" define-primitive-type
445 "long" "ptrdiff_t" typedef
446 "long" "intptr_t" typedef
447 "ulong" "size_t" typedef
448 ] with-compilation-unit