! Copyright (C) 2009 Daniel Ehrenberg
! See http://factorcode.org/license.txt for BSD license.
USING: words kernel locals accessors compiler.tree.propagation.info
sequences kernel.private assocs fry parser math quotations
effects arrays definitions compiler.units namespaces ;
IN: specialized

: in-compilation-unit? ( -- ? )
    changed-definitions get >boolean ;
    
: evil-define-temp ( quot effect -- word )
    in-compilation-unit?
    [ define-temp ]
    [ [ define-temp ] with-compilation-unit ]
    if ;
        
:: lookup-specialized ( #call word n -- special-word/f )
    #call in-d>> n tail* >array [ value-info class>> ] map
    dup [ object = ] all? [ drop f ] [
        word "specialized-defs" word-prop [
            [ declare ] curry word def>> compose
            word stack-effect evil-define-temp 1quotation
        ] cache
    ] if ;

: specialized-quot ( word n -- quot )
    '[ _ _ lookup-specialized ] ;
    
: define-specialized ( word n -- )
    [ drop H{ } clone "specialized-defs" set-word-prop ]
    [ dupd specialized-quot "custom-inlining" set-word-prop ] 2bi ;
        
ERROR: bad-specialized ; 
    
SYNTAX: SPECIALIZED:
    scan-word scan-object
    dup integer? [ bad-specialized ] unless
    define-specialized ;