97 lines
2.3 KiB
Factor
Executable File
97 lines
2.3 KiB
Factor
Executable File
! Copyright (C) 2004, 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: assocs kernel math namespaces sequences system
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kernel.private tuples ;
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IN: alien
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! Some predicate classes used by the compiler for optimization
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! purposes
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PREDICATE: alien simple-alien
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underlying-alien not ;
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! These mixins are not intended to be extended by user code.
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! They are not unions, because if they were we'd have a circular
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! dependency between alien and {byte,bit,float}-arrays.
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MIXIN: simple-c-ptr
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INSTANCE: simple-alien simple-c-ptr
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INSTANCE: f simple-c-ptr
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MIXIN: c-ptr
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INSTANCE: alien c-ptr
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INSTANCE: f c-ptr
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DEFER: pinned-c-ptr?
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PREDICATE: alien pinned-alien
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underlying-alien pinned-c-ptr? ;
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UNION: pinned-c-ptr
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pinned-alien POSTPONE: f ;
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M: f expired? drop t ;
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: <alien> ( address -- alien )
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f <displaced-alien> { simple-c-ptr } declare ; inline
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: alien>native-string ( alien -- string )
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windows? [ alien>u16-string ] [ alien>char-string ] if ;
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: dll-path ( dll -- string )
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(dll-path) alien>native-string ;
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M: alien equal?
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over alien? [
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2dup [ expired? ] either? [
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[ expired? ] both?
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] [
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[ alien-address ] 2apply =
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] if
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] [
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2drop f
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] if ;
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SYMBOL: libraries
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libraries global [ H{ } assoc-like ] change-at
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TUPLE: library path abi dll ;
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: library ( name -- library ) libraries get at ;
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: <library> ( path abi -- library ) f \ library construct-boa ;
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: load-library ( name -- dll )
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library dup [
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dup library-dll [ ] [
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dup library-path dup [
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dlopen dup rot set-library-dll
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] [
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2drop f
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] if
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] ?if
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] when ;
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: add-library ( name path abi -- )
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<library> swap libraries get set-at ;
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TUPLE: alien-callback return parameters abi quot xt ;
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TUPLE: alien-callback-error ;
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: alien-callback ( return parameters abi quot -- alien )
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\ alien-callback-error construct-empty throw ;
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TUPLE: alien-indirect return parameters abi ;
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TUPLE: alien-indirect-error ;
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: alien-indirect ( ... funcptr return parameters abi -- )
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\ alien-indirect-error construct-empty throw ;
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TUPLE: alien-invoke library function return parameters ;
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TUPLE: alien-invoke-error library symbol ;
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: alien-invoke ( ... return library function parameters -- ... )
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2over \ alien-invoke-error construct-boa throw ;
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