scintilla/lexlib/StyleContext.cxx

   1 // Scintilla source code edit control
   2 /** @file StyleContext.cxx
   3  ** Lexer infrastructure.
   4  **/
   5 // Copyright 1998-2004 by Neil Hodgson <neilh@scintilla.org>
   6 // This file is in the public domain.
   7
   8 #include <cstdlib>
   9 #include <cassert>
  10
  11 #include "ILexer.h"
  12
  13 #include "LexAccessor.h"
  14 #include "Accessor.h"
  15 #include "StyleContext.h"
  16 #include "CharacterSet.h"
  17
  18 using namespace Scintilla;
  19
  20 bool StyleContext::MatchIgnoreCase(const char *s) {
  21         if (MakeLowerCase(ch) != static_cast<unsigned char>(*s))
  22                 return false;
  23         s++;
  24         if (MakeLowerCase(chNext) != static_cast<unsigned char>(*s))
  25                 return false;
  26         s++;
  27         for (int n = 2; *s; n++) {
  28                 if (*s !=
  29                         MakeLowerCase(styler.SafeGetCharAt(currentPos + n, 0)))
  30                         return false;
  31                 s++;
  32         }
  33         return true;
  34 }
  35
  36 static void getRange(Sci_PositionU start,
  37                 Sci_PositionU end,
  38                 LexAccessor &styler,
  39                 char *s,
  40                 Sci_PositionU len) {
  41         Sci_PositionU i = 0;
  42         while ((i < end - start + 1) && (i < len-1)) {
  43                 s[i] = styler[start + i];
  44                 i++;
  45         }
  46         s[i] = '\0';
  47 }
  48
  49 void StyleContext::GetCurrent(char *s, Sci_PositionU len) {
  50         getRange(styler.GetStartSegment(), currentPos - 1, styler, s, len);
  51 }
  52
  53 static void getRangeLowered(Sci_PositionU start,
  54                 Sci_PositionU end,
  55                 LexAccessor &styler,
  56                 char *s,
  57                 Sci_PositionU len) {
  58         Sci_PositionU i = 0;
  59         while ((i < end - start + 1) && (i < len-1)) {
  60                 s[i] = MakeLowerCase(styler[start + i]);
  61                 i++;
  62         }
  63         s[i] = '\0';
  64 }
  65
  66 void StyleContext::GetCurrentLowered(char *s, Sci_PositionU len) {
  67         getRangeLowered(styler.GetStartSegment(), currentPos - 1, styler, s, len);
  68 }