! :folding=indent:collapseFolds=1:

! $Id$
!
! Copyright (C) 2004 Slava Pestov.
! 
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! modification, are permitted provided that the following conditions are met:
! 
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!    this list of conditions and the following disclaimer.
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IN: lists USE: kernel USE: stack

: array>list ( array -- list )
    #! Convert an array into a proper list.
    [ [ "java.lang.Object" ] ] "factor.Cons" "fromArray"
    jinvoke-static ;

: car ( [ car | cdr ] -- car )
    #! Push the head of a list.
    "factor.Cons" "car" jvar-get ; inline

: cdr ( [ car | cdr ] -- cdr )
    #! Push the tail of a list. In a proper list, the tail is
    #! always a cons cell or f; in an improper list, the tail
    #! can be anything.
    "factor.Cons" "cdr" jvar-get ; inline

: cons ( car cdr -- [ car , cdr ] )
    #! Push a new cons cell. If the cdr is f or a proper list,
    #! has the effect of prepending the car to the cdr.
    [ "java.lang.Object" "java.lang.Object" ] "factor.Cons" jnew
    ; inline

: cons? ( list -- boolean )
    #! Test for cons cell type.
    "factor.Cons" is ; inline

: deep-clone ( cons -- cons )
    [ "factor.Cons" ] "factor.Cons" "deepClone" jinvoke-static ;

: set-car ( A [ B | C ] -- )
    #! DESTRUCTIVE. Replace the head of a list.
    "factor.Cons" "car" jvar-set ; inline

: set-cdr ( A [ B | C ] -- )
    #! DESTRUCTIVE. Replace the tail of a list.
    "factor.Cons" "cdr" jvar-set ; inline