1 ! Copyright (C) 2008, 2010 Slava Pestov, Doug Coleman, Joe Groff.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors alien alien.c-types alien.libraries arrays
4 assocs classes combinators combinators.short-circuit
5 compiler.units effects grouping kernel parser sequences
6 splitting words fry locals lexer namespaces summary math
7 vocabs.parser words.constant classes.parser alien.enums ;
10 SYMBOL: current-library
14 ERROR: bad-array-type ;
16 : parse-array-type ( name -- c-type )
18 [ [ "]" ?tail [ bad-array-type ] unless parse-datum ] map ]
22 : (parse-c-type) ( string -- type )
24 { [ "*" ?tail ] [ (parse-c-type) <pointer> ] }
25 { [ CHAR: ] over member? ] [ parse-array-type ] }
26 { [ dup search ] [ parse-word ] }
30 : c-array? ( c-type -- ? )
31 { [ array? ] [ first { [ c-type-word? ] [ pointer? ] } 1|| ] } 1&& ;
33 : valid-c-type? ( c-type -- ? )
34 { [ c-array? ] [ c-type-word? ] [ pointer? ] [ void? ] } 1|| ;
36 : parse-c-type ( string -- type )
37 (parse-c-type) dup valid-c-type? [ no-c-type ] unless ;
39 : scan-c-type ( -- c-type )
41 { [ dup "{" = ] [ drop \ } parse-until >array ] }
42 { [ dup "pointer:" = ] [ drop scan-c-type <pointer> ] }
46 : reset-c-type ( word -- )
47 dup "struct-size" word-prop
48 [ dup [ forget-class ] [ { "struct-size" } reset-props ] bi ] when
55 ERROR: *-in-c-type-name name ;
57 : validate-c-type-name ( name -- name )
59 [ *-in-c-type-name ] when ;
61 : (CREATE-C-TYPE) ( word -- word )
62 validate-c-type-name current-vocab create {
69 : CREATE-C-TYPE ( -- word )
70 scan-token (CREATE-C-TYPE) ;
73 GENERIC: return-type-name ( type -- name )
75 M: object return-type-name drop "void" ;
76 M: word return-type-name name>> ;
77 M: pointer return-type-name to>> return-type-name CHAR: * suffix ;
79 : parse-pointers ( type name -- type' name' )
81 [ [ <pointer> ] dip parse-pointers ] when ;
83 : next-enum-member ( members name value -- members value' )
85 [ [ 2array suffix! ] [ enum>number 1 + ] bi ] 2bi ;
87 : parse-enum-name ( -- name )
88 CREATE-C-TYPE dup save-location ;
90 : parse-enum-base-type ( -- base-type token )
92 [ drop scan-object scan-token ]
95 : parse-enum-member ( members name value -- members value' )
97 [ 2drop scan-token create-class-in scan-object next-enum-member "}" expect ]
98 [ [ create-class-in ] dip next-enum-member ] if ;
100 : parse-enum-members ( members counter token -- members )
102 [ swap parse-enum-member scan-token parse-enum-members ] [ 2drop ] if ;
106 : parse-enum ( -- name base-type members )
109 [ V{ } clone 0 ] dip parse-enum-members ;
111 : scan-function-name ( -- return function )
112 scan-c-type scan-token parse-pointers ;
114 :: (scan-c-args) ( end-marker types names -- )
115 scan-token :> type-str
116 type-str end-marker = [
117 type-str { "(" ")" } member? [
118 type-str parse-c-type :> type
119 scan-token "," ?tail drop :> name
120 type name parse-pointers :> ( type' name' )
121 type' types push name' names push
123 end-marker types names (scan-c-args)
126 : scan-c-args ( end-marker -- types names )
127 V{ } clone V{ } clone [ (scan-c-args) ] 2keep [ >array ] bi@ ;
129 : function-quot ( return library function types -- quot )
130 '[ _ _ _ _ alien-invoke ] ;
132 : function-effect ( names return -- effect )
133 [ { } ] [ return-type-name 1array ] if-void <effect> ;
135 : create-function ( name -- word )
136 create-in dup reset-generic ;
138 :: (make-function) ( return function library types names -- quot effect )
139 return library function types function-quot
140 names return function-effect ;
142 :: make-function ( return function library types names -- word quot effect )
143 function create-function
144 return function library types names (make-function) ;
146 : (FUNCTION:) ( -- return function library types names )
147 scan-function-name current-library get ";" scan-c-args ;
149 : callback-quot ( return types abi -- quot )
150 '[ [ _ _ _ ] dip alien-callback ] ;
152 :: make-callback-type ( lib return type-name types names -- word quot effect )
153 type-name current-vocab create :> type-word
154 type-word [ reset-generic ] [ reset-c-type ] bi
155 void* type-word typedef
156 type-word names return function-effect "callback-effect" set-word-prop
157 type-word lib "callback-library" set-word-prop
158 type-word return types lib library-abi callback-quot ( quot -- alien ) ;
160 : (CALLBACK:) ( -- word quot effect )
162 scan-function-name ";" scan-c-args make-callback-type ;
164 PREDICATE: alien-function-alias-word < word
167 [ last \ alien-invoke eq? ]
170 PREDICATE: alien-function-word < alien-function-alias-word
171 [ def>> third ] [ name>> ] bi = ;
173 PREDICATE: alien-callback-type-word < typedef-word
174 "callback-effect" word-prop ;
176 : global-quot ( type word -- quot )
177 swap [ name>> current-library get ] dip
178 '[ _ _ address-of 0 _ alien-value ] ;
180 : set-global-quot ( type word -- quot )
181 swap [ name>> current-library get ] dip
182 '[ _ _ address-of 0 _ set-alien-value ] ;
184 : define-global-getter ( type word -- )
185 [ nip ] [ global-quot ] 2bi ( -- value ) define-declared ;
187 : define-global-setter ( type word -- )
188 [ nip name>> "set-" prepend create-in ]
189 [ set-global-quot ] 2bi ( obj -- ) define-declared ;
191 : define-global ( type word -- )
192 [ define-global-getter ] [ define-global-setter ] 2bi ;