ext/scintilla/src/CharacterSet.h

   1 // Scintilla source code edit control\r
   2 /** @file CharacterSet.h\r
   3  ** Encapsulates a set of characters. Used to test if a character is within a set.\r
   4  **/\r
   5 // Copyright 2007 by Neil Hodgson <neilh@scintilla.org>\r
   6 // The License.txt file describes the conditions under which this software may be distributed.\r
   7 \r
   8 class CharacterSet {\r
   9         int size;\r
  10         bool valueAfter;\r
  11         bool *bset;\r
  12 public:\r
  13         enum setBase {\r
  14                 setNone=0,\r
  15                 setLower=1,\r
  16                 setUpper=2,\r
  17                 setDigits=4,\r
  18                 setAlpha=setLower|setUpper,\r
  19                 setAlphaNum=setAlpha|setDigits\r
  20         };\r
  21         CharacterSet(setBase base=setNone, const char *initialSet="", int size_=0x80, bool valueAfter_=false) {\r
  22                 size = size_;\r
  23                 valueAfter = valueAfter_;\r
  24                 bset = new bool[size];\r
  25                 for (int i=0; i < size; i++) {\r
  26                         bset[i] = false;\r
  27                 }\r
  28                 AddString(initialSet);\r
  29                 if (base & setLower)\r
  30                         AddString("abcdefghijklmnopqrstuvwxyz");\r
  31                 if (base & setUpper)\r
  32                         AddString("ABCDEFGHIJKLMNOPQRSTUVWXYZ");\r
  33                 if (base & setDigits)\r
  34                         AddString("0123456789");\r
  35         }\r
  36         ~CharacterSet() {\r
  37                 delete []bset;\r
  38                 bset = 0;\r
  39                 size = 0;\r
  40         }\r
  41         void Add(int val) {\r
  42                 PLATFORM_ASSERT(val >= 0);\r
  43                 PLATFORM_ASSERT(val < size);\r
  44                 bset[val] = true;\r
  45         }\r
  46         void AddString(const char *CharacterSet) {\r
  47                 for (const char *cp=CharacterSet; *cp; cp++) {\r
  48                         int val = static_cast<unsigned char>(*cp);\r
  49                         PLATFORM_ASSERT(val >= 0);\r
  50                         PLATFORM_ASSERT(val < size);\r
  51                         bset[val] = true;\r
  52                 }\r
  53         }\r
  54         bool Contains(int val) const {\r
  55                 PLATFORM_ASSERT(val >= 0);\r
  56                 return (val < size) ? bset[val] : valueAfter;\r
  57         }\r
  58 };\r