diff -r 000000000000 -r 6474c204b198 gfx/thebes/nsUnicodeRange.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/thebes/nsUnicodeRange.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,91 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <stdint.h>
+
+class nsIAtom;
+
+// The following constants define unicode subranges
+// values below kRangeNum must be continuous so that we can map to 
+// lang group directly.
+// all ranges we care about should be defined under 32, that allows 
+// us to store range using bits of a uint32_t
+
+// frequently used range definitions
+const uint8_t   kRangeCyrillic =    0;
+const uint8_t   kRangeGreek    =    1;
+const uint8_t   kRangeTurkish  =    2;
+const uint8_t   kRangeHebrew   =    3;
+const uint8_t   kRangeArabic   =    4;
+const uint8_t   kRangeBaltic   =    5;
+const uint8_t   kRangeThai     =    6;
+const uint8_t   kRangeKorean   =    7;
+const uint8_t   kRangeJapanese =    8;
+const uint8_t   kRangeSChinese =    9;
+const uint8_t   kRangeTChinese =   10;
+const uint8_t   kRangeDevanagari = 11;
+const uint8_t   kRangeTamil    =   12;
+const uint8_t   kRangeArmenian =   13;
+const uint8_t   kRangeBengali  =   14;
+const uint8_t   kRangeCanadian =   15;
+const uint8_t   kRangeEthiopic =   16;
+const uint8_t   kRangeGeorgian =   17;
+const uint8_t   kRangeGujarati =   18;
+const uint8_t   kRangeGurmukhi =   19;
+const uint8_t   kRangeKhmer    =   20;
+const uint8_t   kRangeMalayalam =  21;
+const uint8_t   kRangeOriya     =  22;
+const uint8_t   kRangeTelugu    =  23;
+const uint8_t   kRangeKannada   =  24;
+const uint8_t   kRangeSinhala   =  25;
+const uint8_t   kRangeTibetan   =  26;
+
+const uint8_t   kRangeSpecificItemNum = 27;
+
+//range/rangeSet grow to this place 27-29
+
+const uint8_t   kRangeSetStart  =  30;   // range set definition starts from here
+const uint8_t   kRangeSetLatin  =  30;
+const uint8_t   kRangeSetCJK    =  31;
+const uint8_t   kRangeSetEnd    =  31;   // range set definition ends here, this
+                                         // and smaller ranges are used as bit
+                                         // mask, don't increase this value.
+
+// less frequently used range definition
+const uint8_t   kRangeSurrogate            = 32;
+const uint8_t   kRangePrivate              = 33;
+const uint8_t   kRangeMisc                 = 34;
+const uint8_t   kRangeUnassigned           = 35;
+const uint8_t   kRangeSyriac               = 36;
+const uint8_t   kRangeThaana               = 37;
+const uint8_t   kRangeLao                  = 38;
+const uint8_t   kRangeMyanmar              = 39;
+const uint8_t   kRangeCherokee             = 40;
+const uint8_t   kRangeOghamRunic           = 41;
+const uint8_t   kRangeMongolian            = 42;
+const uint8_t   kRangeMathOperators        = 43;
+const uint8_t   kRangeMiscTechnical        = 44;
+const uint8_t   kRangeControlOpticalEnclose = 45;
+const uint8_t   kRangeBoxBlockGeometrics   = 46;
+const uint8_t   kRangeMiscSymbols          = 47;
+const uint8_t   kRangeDingbats             = 48;
+const uint8_t   kRangeBraillePattern       = 49;
+const uint8_t   kRangeYi                   = 50;
+const uint8_t   kRangeCombiningDiacriticalMarks = 51;
+const uint8_t   kRangeSpecials             = 52;
+
+// aggregate ranges for non-BMP codepoints (u+2xxxx are all CJK)
+const uint8_t   kRangeSMP                  = 53;  // u+1xxxx
+const uint8_t   kRangeHigherPlanes         = 54;  // u+3xxxx and above
+
+const uint8_t   kRangeTableBase   = 128;    //values over 127 are reserved for internal use only
+const uint8_t   kRangeTertiaryTable  = 145; // leave room for 16 subtable 
+                                            // indices (kRangeTableBase + 1 ..
+                                            // kRangeTableBase + 16)
+
+
+
+uint32_t FindCharUnicodeRange(uint32_t ch);
+nsIAtom* LangGroupFromUnicodeRange(uint8_t unicodeRange);