76 lines
2.0 KiB
Factor
76 lines
2.0 KiB
Factor
! Copyright (C) 2005, 2009 Daniel Ehrenberg
|
|
! See http://factorcode.org/license.txt for BSD license.
|
|
USING: accessors arrays assocs combinators
|
|
combinators.short-circuit fry generalizations inverse kernel
|
|
namespaces sequences sorting strings unicode.categories
|
|
xml.data xml.syntax xml.syntax.private ;
|
|
IN: xml.syntax.inverse
|
|
|
|
: remove-blanks ( seq -- newseq )
|
|
[ { [ string? not ] [ [ blank? ] all? not ] } 1|| ] filter ;
|
|
|
|
GENERIC: >xml ( xml -- tag )
|
|
M: xml >xml body>> ;
|
|
M: tag >xml ;
|
|
M: xml-chunk >xml
|
|
remove-blanks
|
|
[ length 1 =/fail ]
|
|
[ first dup tag? [ fail ] unless ] bi ;
|
|
M: object >xml fail ;
|
|
|
|
: 1chunk ( object -- xml-chunk )
|
|
1array <xml-chunk> ;
|
|
|
|
GENERIC: >xml-chunk ( xml -- chunk )
|
|
M: xml >xml-chunk body>> 1chunk ;
|
|
M: xml-chunk >xml-chunk ;
|
|
M: object >xml-chunk 1chunk ;
|
|
|
|
GENERIC: [undo-xml] ( xml -- quot )
|
|
|
|
M: xml [undo-xml]
|
|
body>> [undo-xml] '[ >xml @ ] ;
|
|
|
|
M: xml-chunk [undo-xml]
|
|
seq>> [undo-xml] '[ >xml-chunk @ ] ;
|
|
|
|
: undo-attrs ( attrs -- quot: ( attrs -- ) )
|
|
[
|
|
[ main>> ] dip dup interpolated?
|
|
[ var>> '[ _ attr _ set ] ]
|
|
[ '[ _ attr _ =/fail ] ] if
|
|
] { } assoc>map '[ _ cleave ] ;
|
|
|
|
M: tag [undo-xml] ( tag -- quot: ( tag -- ) )
|
|
{
|
|
[ name>> main>> '[ name>> main>> _ =/fail ] ]
|
|
[ attrs>> undo-attrs ]
|
|
[ children>> [undo-xml] '[ children>> @ ] ]
|
|
} cleave '[ _ _ _ tri ] ;
|
|
|
|
: firstn-strong ( seq n -- ... )
|
|
[ swap length =/fail ]
|
|
[ firstn ] 2bi ; inline
|
|
|
|
M: sequence [undo-xml] ( sequence -- quot: ( seq -- ) )
|
|
remove-blanks [ length ] [ [ [undo-xml] ] { } map-as ] bi
|
|
'[ remove-blanks _ firstn-strong _ spread ] ;
|
|
|
|
M: string [undo-xml] ( string -- quot: ( string -- ) )
|
|
'[ _ =/fail ] ;
|
|
|
|
M: xml-data [undo-xml] ( datum -- quot: ( datum -- ) )
|
|
'[ _ =/fail ] ;
|
|
|
|
M: interpolated [undo-xml]
|
|
var>> '[ _ set ] ;
|
|
|
|
: >enum ( assoc -- enum )
|
|
! Assumes keys are 0..n
|
|
>alist sort-keys values <enum> ;
|
|
|
|
: undo-xml ( xml -- quot )
|
|
[undo-xml] '[ H{ } clone [ _ bind ] keep >enum ] ;
|
|
|
|
\ interpolate-xml 1 [ undo-xml ] define-pop-inverse
|