! Copyright (C) 2008 Daniel Ehrenberg.
! See http://factorcode.org/license.txt for BSD license.
-USING: combinators.short-circuit unicode.categories kernel math
-combinators splitting sequences math.parser io.files io assocs
-arrays namespaces make math.ranges unicode.normalize
-unicode.normalize.private values io.encodings.ascii
-unicode.data compiler.units fry unicode.categories.syntax
-alien.syntax sets accessors interval-maps memoize locals words
-simple-flat-file ;
+USING: accessors alien.syntax arrays assocs combinators
+combinators.short-circuit compiler.units fry interval-maps io
+io.encodings.ascii io.files kernel literals locals make math
+math.parser math.ranges memoize namespaces sequences
+sequences.private sets simple-flat-file splitting
+unicode.categories unicode.categories.syntax unicode.data
+unicode.normalize unicode.normalize.private values words ;
FROM: sequences => change-nth ;
IN: unicode.breaks
[ f ] if*
] [ t ] if ;
+: (format/extended?) ( class -- ? )
+ ${ wExtend wFormat } member? ; inline
+
: format/extended? ( ch -- ? )
- word-break-prop { 4 5 } member? ;
+ word-break-prop (format/extended?) ;
: (walk-up) ( str i -- j )
swap [ format/extended? not ] find-from drop ;
} case ;
:: word-break-next ( old-class new-char i str -- next-class ? )
- new-char format/extended?
- [ old-class dup { 1 2 3 } member? ] [
- new-char word-break-prop old-class over word-table-nth
+ new-char word-break-prop :> new-class
+ new-class (format/extended?)
+ [ old-class dup ${ wCR wLF wNewline } member? ] [
+ new-class old-class over word-table-nth
[ str i ] dip word-break?
] if ;
+: (find-index) ( seq quot quot' -- i elt )
+ pick [ [ (each-index) ] dip call ] dip finish-find ; inline
+
+: find-index ( ... seq quot: ( ... elt i -- ... ? ) -- ... i elt )
+ [ find-integer ] (find-index) ; inline
+
PRIVATE>
: first-word ( str -- i )
- [ unclip-slice word-break-prop over <enum> ] keep
- '[ swap _ word-break-next ] assoc-find 2drop
+ [ unclip-slice word-break-prop over ] keep
+ '[ _ word-break-next ] find-index drop
nip swap length or 1 + ;
: >words ( str -- words )