text: // Copyright 2015 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  // +build ignore
  
  package main
  
  import (
  	"unicode"
  
  	"golang.org/x/text/internal/gen"
  	"golang.org/x/text/internal/ucd"
  	"golang.org/x/text/unicode/rangetable"
  )
  
  // These tables are hand-extracted from:
  // http://www.unicode.org/Public/8.0.0/ucd/extracted/DerivedBidiClass.txt
  func visitDefaults(fn func(r rune, c Class)) {
  	// first write default values for ranges listed above.
  	visitRunes(fn, AL, []rune{
  		0x0600, 0x07BF, // Arabic
  		0x08A0, 0x08FF, // Arabic Extended-A
  		0xFB50, 0xFDCF, // Arabic Presentation Forms
  		0xFDF0, 0xFDFF,
  		0xFE70, 0xFEFF,
  		0x0001EE00, 0x0001EEFF, // Arabic Mathematical Alpha Symbols
  	})
  	visitRunes(fn, R, []rune{
  		0x0590, 0x05FF, // Hebrew
  		0x07C0, 0x089F, // Nko et al.
  		0xFB1D, 0xFB4F,
  		0x00010800, 0x00010FFF, // Cypriot Syllabary et. al.
  		0x0001E800, 0x0001EDFF,
  		0x0001EF00, 0x0001EFFF,
  	})
  	visitRunes(fn, ET, []rune{ // European Terminator
  		0x20A0, 0x20Cf, // Currency symbols
  	})
  	rangetable.Visit(unicode.Noncharacter_Code_Point, func(r rune) {
  		fn(r, BN) // Boundary Neutral
  	})
  	ucd.Parse(gen.OpenUCDFile("DerivedCoreProperties.txt"), func(p *ucd.Parser) {
  		if p.String(1) == "Default_Ignorable_Code_Point" {
  			fn(p.Rune(0), BN) // Boundary Neutral
  		}
  	})
  }
  
  func visitRunes(fn func(r rune, c Class), c Class, runes []rune) {
  	for i := 0; i < len(runes); i += 2 {
  		lo, hi := runes[i], runes[i+1]
  		for j := lo; j <= hi; j++ {
  			fn(j, c)
  		}
  	}
  }
  