factor/library/collections/vectors.factor

! Copyright (C) 2004, 2005 Slava Pestov.
! See http://factor.sf.net/license.txt for BSD license.
IN: vectors
USING: arrays errors generic kernel kernel-internals lists math
math-internals sequences sequences-internals ;

M: vector set-length ( len vec -- ) grow-length ;

M: vector nth-unsafe ( n vec -- obj ) underlying array-nth ;

M: vector nth ( n vec -- obj ) bounds-check nth-unsafe ;

M: vector set-nth-unsafe ( obj n vec -- )
    underlying set-array-nth ;

M: vector set-nth ( obj n vec -- )
    growable-check 2dup ensure set-nth-unsafe ;

: >vector ( list -- vector )
    dup length <vector> [ swap nappend ] keep ; inline

M: object thaw >vector ;

M: vector clone ( vector -- vector ) clone-growable ;

M: general-list like drop >list ;

M: vector like
    drop dup vector? [
        dup array? [ array>vector ] [ >vector ] ifte
    ] unless ;