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wrap: more speedups.
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mrjbq7 committed Sep 20, 2012
1 parent 22675a9 commit 70484f6
Showing 1 changed file with 12 additions and 12 deletions.
24 changes: 12 additions & 12 deletions basis/wrap/wrap.factor
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
! 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
Expand All @@ -10,19 +10,19 @@ C: <element> element

<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 |
Expand All @@ -34,28 +34,28 @@ TYPED: paragraph-cost ( paragraph: paragraph -- cost )
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 )
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