63 lines
1.7 KiB
Factor
63 lines
1.7 KiB
Factor
! Copyright (C) 2006 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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IN: alien
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USING: compiler errors generic hashtables inference inspector
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kernel namespaces sequences strings words parser ;
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TUPLE: alien-callback return parameters quot xt ;
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C: alien-callback make-node ;
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TUPLE: alien-callback-error ;
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: alien-callback ( return parameters quot -- address )
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<alien-callback-error> throw ;
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: callback-bottom ( node -- )
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alien-callback-xt [ word-xt <alien> ] curry infer-quot ;
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\ alien-callback [ string object quotation ] [ alien ] <effect>
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"infer-effect" set-word-prop
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\ alien-callback [
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empty-node <alien-callback>
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pop-literal nip over set-alien-callback-quot
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pop-literal nip over set-alien-callback-parameters
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pop-literal nip over set-alien-callback-return
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gensym over set-alien-callback-xt
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dup node,
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callback-bottom
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] "infer" set-word-prop
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: box-parameters ( parameters -- )
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[ box-parameter ] each-parameter ;
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: registers>objects ( parameters -- )
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dup \ %freg>stack move-parameters
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"nest_stacks" f %alien-invoke box-parameters ;
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: unbox-return ( node -- )
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alien-callback-return [
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"unnest_stacks" f %alien-invoke
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] [
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c-type [
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"reg-class" get
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"unboxer-function" get
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%callback-value
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] bind
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] if-void ;
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: generate-callback ( node -- )
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[ alien-callback-xt ] keep [
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dup alien-callback-parameters registers>objects
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dup alien-callback-quot \ init-error-handler add*
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%alien-callback
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unbox-return
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%return
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] generate-1 ;
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M: alien-callback generate-node
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end-basic-block compile-gc generate-callback iterate-next ;
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M: alien-callback stack-reserve*
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alien-callback-parameters stack-space ;
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