ext/scintilla/src/LexBullant.cxx

   1 // SciTE - Scintilla based Text Editor
   2 // LexBullant.cxx - lexer for Bullant
   3
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <ctype.h>
   7 #include <stdio.h>
   8 #include <stdarg.h>
   9
  10 #include "Platform.h"
  11
  12 #include "PropSet.h"
  13 #include "Accessor.h"
  14 #include "KeyWords.h"
  15 #include "Scintilla.h"
  16 #include "SciLexer.h"
  17
  18 #ifdef SCI_NAMESPACE
  19 using namespace Scintilla;
  20 #endif
  21
  22 static int classifyWordBullant(unsigned int start, unsigned int end, WordList &keywords, Accessor &styler) {
  23         char s[100];
  24         for (unsigned int i = 0; i < end - start + 1 && i < 30; i++) {
  25                 s[i] = static_cast<char>(tolower(styler[start + i]));
  26                 s[i + 1] = '\0';
  27         }
  28         int lev= 0;
  29         char chAttr = SCE_C_IDENTIFIER;
  30         if (isdigit(s[0]) || (s[0] == '.')){
  31                 chAttr = SCE_C_NUMBER;
  32         }
  33         else {
  34                 if (keywords.InList(s)) {
  35                         chAttr = SCE_C_WORD;
  36                         if (strcmp(s, "end") == 0)
  37                                 lev = -1;
  38                         else if (strcmp(s, "method") == 0 ||
  39                                 strcmp(s, "case") == 0 ||
  40                                 strcmp(s, "class") == 0 ||
  41                                 strcmp(s, "debug") == 0 ||
  42                                 strcmp(s, "test") == 0 ||
  43                                 strcmp(s, "if") == 0 ||
  44                                 strcmp(s, "lock") == 0 ||
  45                                 strcmp(s, "transaction") == 0 ||
  46                                 strcmp(s, "trap") == 0 ||
  47                                 strcmp(s, "until") == 0 ||
  48                                 strcmp(s, "while") == 0)
  49                                 lev = 1;
  50                 }
  51         }
  52         styler.ColourTo(end, chAttr);
  53         return lev;
  54 }
  55
  56 static void ColouriseBullantDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
  57         Accessor &styler) {
  58         WordList &keywords = *keywordlists[0];
  59
  60         styler.StartAt(startPos);
  61
  62         bool fold = styler.GetPropertyInt("fold") != 0;
  63         int lineCurrent = styler.GetLine(startPos);
  64         int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
  65         int levelCurrent = levelPrev;
  66
  67         int state = initStyle;
  68         if (state == SCE_C_STRINGEOL)   // Does not leak onto next line
  69                 state = SCE_C_DEFAULT;
  70         char chPrev = ' ';
  71         char chNext = styler[startPos];
  72         unsigned int lengthDoc = startPos + length;
  73         int visibleChars = 0;
  74         styler.StartSegment(startPos);
  75         int endFoundThisLine = 0;
  76         for (unsigned int i = startPos; i < lengthDoc; i++) {
  77                 char ch = chNext;
  78                 chNext = styler.SafeGetCharAt(i + 1);
  79
  80                 if ((ch == '\r' && chNext != '\n') || (ch == '\n')) {
  81                         // Trigger on CR only (Mac style) or either on LF from CR+LF (Dos/Win) or on LF alone (Unix)
  82                         // Avoid triggering two times on Dos/Win
  83                         // End of line
  84                         endFoundThisLine = 0;
  85                         if (state == SCE_C_STRINGEOL) {
  86                                 styler.ColourTo(i, state);
  87                                 state = SCE_C_DEFAULT;
  88                         }
  89                         if (fold) {
  90                                 int lev = levelPrev;
  91                                 if (visibleChars == 0)
  92                                         lev |= SC_FOLDLEVELWHITEFLAG;
  93                                 if ((levelCurrent > levelPrev) && (visibleChars > 0))
  94                                         lev |= SC_FOLDLEVELHEADERFLAG;
  95                                 styler.SetLevel(lineCurrent, lev);
  96                                 lineCurrent++;
  97                                 levelPrev = levelCurrent;
  98                         }
  99                         visibleChars = 0;
 100
 101 /*                      int indentBlock = GetLineIndentation(lineCurrent);
 102                         if (blockChange==1){
 103                                 lineCurrent++;
 104                                 int pos=SetLineIndentation(lineCurrent, indentBlock + indentSize);
 105                         } else if (blockChange==-1) {
 106                                 indentBlock -= indentSize;
 107                                 if (indentBlock < 0)
 108                                         indentBlock = 0;
 109                                 SetLineIndentation(lineCurrent, indentBlock);
 110                                 lineCurrent++;
 111                         }
 112                         blockChange=0;
 113 */              }
 114                 if (!isspace(ch))
 115                         visibleChars++;
 116
 117                 if (styler.IsLeadByte(ch)) {
 118                         chNext = styler.SafeGetCharAt(i + 2);
 119                         chPrev = ' ';
 120                         i += 1;
 121                         continue;
 122                 }
 123
 124                 if (state == SCE_C_DEFAULT) {
 125                         if (iswordstart(ch)) {
 126                                 styler.ColourTo(i-1, state);
 127                                         state = SCE_C_IDENTIFIER;
 128                         } else if (ch == '@' && chNext == 'o') {
 129                                 if ((styler.SafeGetCharAt(i+2) =='f') && (styler.SafeGetCharAt(i+3) == 'f')) {
 130                                         styler.ColourTo(i-1, state);
 131                                         state = SCE_C_COMMENT;
 132                                 }
 133                         } else if (ch == '#') {
 134                                 styler.ColourTo(i-1, state);
 135                                 state = SCE_C_COMMENTLINE;
 136                         } else if (ch == '\"') {
 137                                 styler.ColourTo(i-1, state);
 138                                 state = SCE_C_STRING;
 139                         } else if (ch == '\'') {
 140                                 styler.ColourTo(i-1, state);
 141                                 state = SCE_C_CHARACTER;
 142                         } else if (isoperator(ch)) {
 143                                 styler.ColourTo(i-1, state);
 144                                 styler.ColourTo(i, SCE_C_OPERATOR);
 145                         }
 146                 } else if (state == SCE_C_IDENTIFIER) {
 147                         if (!iswordchar(ch)) {
 148                                 int levelChange = classifyWordBullant(styler.GetStartSegment(), i - 1, keywords, styler);
 149                                 state = SCE_C_DEFAULT;
 150                                 chNext = styler.SafeGetCharAt(i + 1);
 151                                 if (ch == '#') {
 152                                         state = SCE_C_COMMENTLINE;
 153                                 } else if (ch == '\"') {
 154                                         state = SCE_C_STRING;
 155                                 } else if (ch == '\'') {
 156                                         state = SCE_C_CHARACTER;
 157                                 } else if (isoperator(ch)) {
 158                                         styler.ColourTo(i, SCE_C_OPERATOR);
 159                                 }
 160                                 if (endFoundThisLine == 0)
 161                                         levelCurrent+=levelChange;
 162                                 if (levelChange == -1)
 163                                         endFoundThisLine=1;
 164                         }
 165                 } else if (state == SCE_C_COMMENT) {
 166                         if (ch == '@' && chNext == 'o') {
 167                                 if (styler.SafeGetCharAt(i+2) == 'n') {
 168                                         styler.ColourTo(i+2, state);
 169                                         state = SCE_C_DEFAULT;
 170                                         i+=2;
 171                                 }
 172                         }
 173                 } else if (state == SCE_C_COMMENTLINE) {
 174                         if (ch == '\r' || ch == '\n') {
 175                                 endFoundThisLine = 0;
 176                                 styler.ColourTo(i-1, state);
 177                                 state = SCE_C_DEFAULT;
 178                         }
 179                 } else if (state == SCE_C_STRING) {
 180                         if (ch == '\\') {
 181                                 if (chNext == '\"' || chNext == '\'' || chNext == '\\') {
 182                                         i++;
 183                                         ch = chNext;
 184                                         chNext = styler.SafeGetCharAt(i + 1);
 185                                 }
 186                         } else if (ch == '\"') {
 187                                 styler.ColourTo(i, state);
 188                                 state = SCE_C_DEFAULT;
 189                         } else if (chNext == '\r' || chNext == '\n') {
 190                                 endFoundThisLine = 0;
 191                                 styler.ColourTo(i-1, SCE_C_STRINGEOL);
 192                                 state = SCE_C_STRINGEOL;
 193                         }
 194                 } else if (state == SCE_C_CHARACTER) {
 195                         if ((ch == '\r' || ch == '\n') && (chPrev != '\\')) {
 196                                 endFoundThisLine = 0;
 197                                 styler.ColourTo(i-1, SCE_C_STRINGEOL);
 198                                 state = SCE_C_STRINGEOL;
 199                         } else if (ch == '\\') {
 200                                 if (chNext == '\"' || chNext == '\'' || chNext == '\\') {
 201                                         i++;
 202                                         ch = chNext;
 203                                         chNext = styler.SafeGetCharAt(i + 1);
 204                                 }
 205                         } else if (ch == '\'') {
 206                                 styler.ColourTo(i, state);
 207                                 state = SCE_C_DEFAULT;
 208                         }
 209                 }
 210                 chPrev = ch;
 211         }
 212         styler.ColourTo(lengthDoc - 1, state);
 213
 214         // Fill in the real level of the next line, keeping the current flags as they will be filled in later
 215         if (fold) {
 216                 int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
 217                 //styler.SetLevel(lineCurrent, levelCurrent | flagsNext);
 218                 styler.SetLevel(lineCurrent, levelPrev | flagsNext);
 219
 220         }
 221 }
 222
 223 static const char * const bullantWordListDesc[] = {
 224         "Keywords",
 225         0
 226 };
 227
 228 LexerModule lmBullant(SCLEX_BULLANT, ColouriseBullantDoc, "bullant", 0, bullantWordListDesc);