parser/html/nsHtml5NamedCharacters.cpp

   1 /*
   2  * Copyright (c) 2008-2010 Mozilla Foundation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20  * DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #define nsHtml5NamedCharacters_cpp_
  24 #include "jArray.h"
  25 #include "mozilla/ArrayUtils.h"
  26 #include "mozilla/Logging.h"
  27 #include "nsDebug.h"
  28 #include "nscore.h"
  29
  30 #include "nsHtml5NamedCharacters.h"
  31
  32 const char16_t nsHtml5NamedCharacters::VALUES[][2] = {
  33 #define NAMED_CHARACTER_REFERENCE(N, CHARS, LEN, FLAG, VALUE) {VALUE},
  34 #include "nsHtml5NamedCharactersInclude.h"
  35 #undef NAMED_CHARACTER_REFERENCE
  36     {0, 0}};
  37
  38 char16_t** nsHtml5NamedCharacters::WINDOWS_1252;
  39 static char16_t const WINDOWS_1252_DATA[] = {
  40     0x20AC, 0x0081, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021,
  41     0x02C6, 0x2030, 0x0160, 0x2039, 0x0152, 0x008D, 0x017D, 0x008F,
  42     0x0090, 0x2018, 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014,
  43     0x02DC, 0x2122, 0x0161, 0x203A, 0x0153, 0x009D, 0x017E, 0x0178};
  44
  45 /**
  46  * To avoid having lots of pointers in the |charData| array, below,
  47  * which would cause us to have to do lots of relocations at library
  48  * load time, store all the string data for the names in one big array.
  49  * Then use tricks with enums to help us build an array that contains
  50  * the positions of each within the big arrays.
  51  */
  52
  53 static const int8_t ALL_NAMES[] = {
  54 #define NAMED_CHARACTER_REFERENCE(N, CHARS, LEN, FLAG, VALUE) CHARS,
  55 #include "nsHtml5NamedCharactersInclude.h"
  56 #undef NAMED_CHARACTER_REFERENCE
  57 };
  58
  59 enum NamePositions {
  60   DUMMY_INITIAL_NAME_POSITION = 0,
  61 /* enums don't take up space, so generate _START and _END */
  62 #define NAMED_CHARACTER_REFERENCE(N, CHARS, LEN, FLAG, VALUE)    \
  63   NAME_##N##_DUMMY, /* automatically one higher than previous */ \
  64       NAME_##N##_START = NAME_##N##_DUMMY - 1,                   \
  65       NAME_##N##_END = NAME_##N##_START + LEN + FLAG,
  66 #include "nsHtml5NamedCharactersInclude.h"
  67 #undef NAMED_CHARACTER_REFERENCE
  68   DUMMY_FINAL_NAME_VALUE
  69 };
  70
  71 static_assert(std::size(ALL_NAMES) < 0x10000,
  72               "Start positions should fit in 16 bits");
  73
  74 const nsHtml5CharacterName nsHtml5NamedCharacters::NAMES[] = {
  75 #ifdef DEBUG
  76 #  define NAMED_CHARACTER_REFERENCE(N, CHARS, LEN, FLAG, VALUE) \
  77     {NAME_##N##_START, LEN, N},
  78 #else
  79 #  define NAMED_CHARACTER_REFERENCE(N, CHARS, LEN, FLAG, VALUE) \
  80     {                                                           \
  81         NAME_##N##_START,                                       \
  82         LEN,                                                    \
  83     },
  84 #endif
  85 #include "nsHtml5NamedCharactersInclude.h"
  86 #undef NAMED_CHARACTER_REFERENCE
  87 };
  88
  89 int32_t nsHtml5CharacterName::length() const { return nameLen; }
  90
  91 char16_t nsHtml5CharacterName::charAt(int32_t index) const {
  92   return static_cast<char16_t>(ALL_NAMES[nameStart + index]);
  93 }
  94
  95 void nsHtml5NamedCharacters::initializeStatics() {
  96   WINDOWS_1252 = new char16_t*[32];
  97   for (int32_t i = 0; i < 32; ++i) {
  98     WINDOWS_1252[i] = (char16_t*)&(WINDOWS_1252_DATA[i]);
  99   }
 100 }
 101
 102 void nsHtml5NamedCharacters::releaseStatics() { delete[] WINDOWS_1252; }