1 USING: alien alien.c-types alien.accessors windows.com.syntax
2 init windows.com.syntax.private windows.com continuations kernel
3 namespaces windows.ole32 libc vocabs assocs accessors arrays
4 sequences quotations combinators math words compiler.units
5 destructors fry math.parser generalizations sets
6 specialized-arrays.alien specialized-arrays.direct.alien ;
7 IN: windows.com.wrapper
9 TUPLE: com-wrapper callbacks vtbls disposed ;
13 SYMBOL: +wrapped-objects+
14 +wrapped-objects+ get-global
15 [ H{ } +wrapped-objects+ set-global ]
18 SYMBOL: +live-wrappers+
19 +live-wrappers+ get-global
20 [ V{ } +live-wrappers+ set-global ]
23 SYMBOL: +vtbl-counter+
24 +vtbl-counter+ get-global
25 [ 0 +vtbl-counter+ set-global ]
28 "windows.com.wrapper.callbacks" create-vocab drop
30 : (next-vtbl-counter) ( -- n )
31 +vtbl-counter+ [ 1+ dup ] change ;
33 : com-unwrap ( wrapped -- object )
34 +wrapped-objects+ get-global at*
35 [ "invalid COM wrapping pointer" throw ] unless ;
37 : (free-wrapped-object) ( wrapped -- )
38 [ +wrapped-objects+ get-global delete-at ] keep
41 : (query-interface-cases) ( interfaces -- cases )
43 [ find-com-interface-definition family-tree [ iid>> ] map ] dip
44 1quotation [ 2array ] curry map
48 : (make-query-interface) ( interfaces -- quot )
49 (query-interface-cases)
51 swap 16 memory>byte-array
54 "void*" heap-size * rot <displaced-alien> com-add-ref
55 swap 0 set-alien-cell S_OK
56 ] [ nip f swap 0 set-alien-cell E_NOINTERFACE ] if*
59 : (make-add-ref) ( interfaces -- quot )
60 length "void*" heap-size * '[
62 [ alien-unsigned-4 1+ dup ]
63 [ set-alien-unsigned-4 ]
67 : (make-release) ( interfaces -- quot )
68 length "void*" heap-size * '[
71 [ alien-unsigned-4 1- dup ]
72 [ set-alien-unsigned-4 ]
74 dup 0 = [ swap (free-wrapped-object) ] [ nip ] if
77 : (make-iunknown-methods) ( interfaces -- quots )
78 [ (make-query-interface) ]
80 [ (make-release) ] tri
83 : (thunk) ( n -- quot )
86 [ "void*" heap-size neg * '[ _ swap <displaced-alien> ] ]
89 : (thunked-quots) ( quots iunknown-methods thunk -- {thunk,quot}s )
90 [ '[ _ '[ @ com-unwrap ] [ swap 2array ] curry map ] ]
91 [ '[ _ [ swap 2array ] curry map ] ] bi bi*
94 : compile-alien-callback ( word return parameters abi quot -- word )
95 '[ _ _ _ _ alien-callback ]
96 [ [ (( -- alien )) define-declared ] pick slip ]
97 with-compilation-unit ;
99 : (callback-word) ( function-name interface-name counter -- word )
100 [ "::" rot 3append "-callback-" ] dip number>string 3append
101 "windows.com.wrapper.callbacks" create ;
103 : (finish-thunk) ( param-count thunk quot -- thunked-quot )
104 [ [ drop [ ] ] [ swap 1- '[ _ _ ndip ] ] if-empty ]
107 : (make-interface-callbacks) ( interface-name quots iunknown-methods n -- words )
108 (thunk) (thunked-quots)
109 swap [ find-com-interface-definition family-tree-functions ]
110 keep (next-vtbl-counter) '[
112 [ name>> _ _ (callback-word) ]
119 first2 (finish-thunk)
121 "stdcall" swap compile-alien-callback
124 : (make-callbacks) ( implementations -- sequence )
125 dup [ first ] map (make-iunknown-methods)
126 [ [ first2 ] 2dip swap (make-interface-callbacks) ]
129 : (malloc-wrapped-object) ( wrapper -- wrapped-object )
130 vtbls>> length "void*" heap-size *
131 [ "ulong" heap-size + malloc ] keep
132 [ [ 1 ] 2dip set-alien-unsigned-4 ] [ drop ] 2bi ;
134 : (callbacks>vtbl) ( callbacks -- vtbl )
135 [ execute ] void*-array{ } map-as malloc-byte-array ;
136 : (callbacks>vtbls) ( callbacks -- vtbls )
137 [ (callbacks>vtbl) ] map ;
139 : (allocate-wrapper) ( wrapper -- )
140 dup callbacks>> (callbacks>vtbls) >>vtbls
144 +live-wrappers+ get-global [ (allocate-wrapper) ] each
145 H{ } +wrapped-objects+ set-global ;
147 [ (init-hook) ] "windows.com.wrapper" add-init-hook
151 : allocate-wrapper ( wrapper -- )
152 [ (allocate-wrapper) ]
153 [ +live-wrappers+ get adjoin ] bi ;
155 : <com-wrapper> ( implementations -- wrapper )
156 (make-callbacks) f f com-wrapper boa
157 dup allocate-wrapper ;
159 M: com-wrapper dispose*
160 [ [ free ] each f ] change-vtbls
161 +live-wrappers+ get-global delete ;
163 : com-wrap ( object wrapper -- wrapped-object )
164 [ vtbls>> ] [ (malloc-wrapped-object) ] bi
165 [ over length <direct-void*-array> 0 swap copy ] keep
166 [ +wrapped-objects+ get-global set-at ] keep ;