The Tor Browser: js/src/devtools/jint/sunspider/string-fasta.js@129ffea94266 (annotated)

js/src/devtools/jint/sunspider/string-fasta.js@129ffea94266 (annotated)

js/src/devtools/jint/sunspider/string-fasta.js

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 // The Great Computer Language Shootout
 //  http://shootout.alioth.debian.org
 //
 //  Contributed by Ian Osgood
 var last = 42, A = 3877, C = 29573, M = 139968;
 function rand(max) {
   last = (last * A + C) % M;
   return max * last / M;
 }
 var ALU =
   "GGCCGGGCGCGGTGGCTCACGCCTGTAATCCCAGCACTTTGG" +
   "GAGGCCGAGGCGGGCGGATCACCTGAGGTCAGGAGTTCGAGA" +
   "CCAGCCTGGCCAACATGGTGAAACCCCGTCTCTACTAAAAAT" +
   "ACAAAAATTAGCCGGGCGTGGTGGCGCGCGCCTGTAATCCCA" +
   "GCTACTCGGGAGGCTGAGGCAGGAGAATCGCTTGAACCCGGG" +
   "AGGCGGAGGTTGCAGTGAGCCGAGATCGCGCCACTGCACTCC" +
   "AGCCTGGGCGACAGAGCGAGACTCCGTCTCAAAAA";
 var IUB = {
   a:0.27, c:0.12, g:0.12, t:0.27,
   B:0.02, D:0.02, H:0.02, K:0.02,
   M:0.02, N:0.02, R:0.02, S:0.02,
   V:0.02, W:0.02, Y:0.02
 }
 var HomoSap = {
   a: 0.3029549426680,
   c: 0.1979883004921,
   g: 0.1975473066391,
   t: 0.3015094502008
 }
 function makeCumulative(table) {
   var last = null;
   /* BEGIN LOOP */
   for (var c in table) {
     if (last) table[c] += table[last];
     last = c;
   }
   /* END LOOP */
 }
 function fastaRepeat(n, seq) {
   var seqi = 0, lenOut = 60;
   /* BEGIN LOOP */
   while (n>0) {
     if (n<lenOut) lenOut = n;
     if (seqi + lenOut < seq.length) {
       ret = seq.substring(seqi, seqi+lenOut);
       seqi += lenOut;
     } else {
       var s = seq.substring(seqi);
       seqi = lenOut - s.length;
       ret = s + seq.substring(0, seqi);
     }
     n -= lenOut;
   }
   /* END LOOP */
 }
 function fastaRandom(n, table) {
   var line = new Array(60);
   makeCumulative(table);
   /* BEGIN LOOP */
   while (n>0) {
     if (n<line.length) line = new Array(n);
   /* BEGIN LOOP */
     for (var i=0; i<line.length; i++) {
       var r = rand(1);
   /* BEGIN LOOP */
       for (var c in table) {
         if (r < table[c]) {
           line[i] = c;
           break;
         }
       }
   /* END LOOP */
     }
   /* END LOOP */
     ret = line.join('');
     n -= line.length;
   }
   /* END LOOP */
 }
 var ret;
 var count = 7;
 ret = fastaRepeat(2*count*100000, ALU);
 ret = fastaRandom(3*count*1000, IUB);
 ret = fastaRandom(5*count*1000, HomoSap);