! Copyright (C) 2009 Daniel Ehrenberg
! See http://factorcode.org/license.txt for BSD license.
USING: accessors arrays combinators combinators.short-circuit
-fry kernel lists locals math sequences typed ;
+fry kernel kernel.private lists locals math sequences typed ;
IN: wrap
! black is the text length, white is the whitespace length
<PRIVATE
-TYPED: element-length ( element: element -- n )
- [ black>> ] [ white>> ] bi + ;
+: element-length ( element -- n )
+ [ black>> ] [ white>> ] bi + ; inline
TUPLE: paragraph line-max line-ideal lines head-width tail-cost ;
C: <paragraph> paragraph
TYPED: top-fits? ( paragraph: paragraph -- ? )
[ head-width>> ]
- [ dup lines>> 1list? [ line-ideal>> ] [ line-max>> ] if ] bi <= ;
+ [ dup lines>> 1list? [ line-ideal>> ] [ line-max>> ] if ] bi <= ; inline
TYPED: fits? ( paragraph: paragraph -- ? )
! Make this not count spaces at end
- { [ lines>> car 1list? ] [ top-fits? ] } 1|| ;
+ { [ lines>> car 1list? ] [ top-fits? ] } 1|| ; inline
:: min-by ( seq quot -- elt )
f 1/0. seq [| key value newkey |
dup lines>> 1list? [ drop 0 ] [
[ [ head-width>> ] [ line-ideal>> ] bi - sq ]
[ tail-cost>> ] bi +
- ] if ;
+ ] if ; inline
: min-cost ( paragraphs -- paragraph )
- [ paragraph-cost ] min-by ;
+ [ paragraph-cost ] min-by ; inline
-: new-line ( paragraph element -- paragraph )
+TYPED: new-line ( paragraph: paragraph element: element -- paragraph )
{
[ drop [ line-max>> ] [ line-ideal>> ] bi ]
[ [ lines>> ] [ 1list ] bi* swons ]
[ nip black>> ]
[ drop paragraph-cost ]
- } 2cleave <paragraph> ;
+ } 2cleave <paragraph> ; inline
TYPED: add-element ( paragraph: paragraph element: element -- )
[ element-length [ + ] curry change-head-width ]
[ [ [ unswons ] dip swons swons ] curry change-lines ]
- bi drop ;
+ bi drop ; inline
-: wrap-step ( paragraphs element -- paragraphs )
+TYPED: wrap-step ( paragraphs: array element: element -- paragraphs )
[ [ min-cost ] dip new-line ]
[ dupd '[ _ add-element ] each ]
- 2bi swap prefix
+ 2bi swap prefix { array } declare
[ fits? ] filter ;
: 1paragraph ( line-max line-ideal element -- paragraph )