scintilla/LexGui4Cli.cxx

   1 // Scintilla source code edit control
   2 // Copyright 1998-2002 by Neil Hodgson <neilh@scintilla.org>
   3 /*
   4 This is the Lexer for Gui4Cli, included in SciLexer.dll
   5 - by d. Keletsekis, 2/10/2003
   6
   7 To add to SciLexer.dll:
   8 1. Add the values below to INCLUDE\Scintilla.iface
   9 2. Run the include/HFacer.py script
  10 3. Run the src/lexGen.py script
  11
  12 val SCE_GC_DEFAULT=0
  13 val SCE_GC_COMMENTLINE=1
  14 val SCE_GC_COMMENTBLOCK=2
  15 val SCE_GC_GLOBAL=3
  16 val SCE_GC_EVENT=4
  17 val SCE_GC_ATTRIBUTE=5
  18 val SCE_GC_CONTROL=6
  19 val SCE_GC_COMMAND=7
  20 val SCE_GC_STRING=8
  21 val SCE_GC_OPERATOR=9
  22 */
  23
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <ctype.h>
  27 #include <stdio.h>
  28 #include <stdarg.h>
  29
  30 #include "Platform.h"
  31
  32 #include "PropSet.h"
  33 #include "Accessor.h"
  34 #include "StyleContext.h"
  35 #include "KeyWords.h"
  36 #include "Scintilla.h"
  37 #include "SciLexer.h"
  38
  39 #define debug Platform::DebugPrintf
  40
  41 static inline bool IsAWordChar(const int ch) {
  42         return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_' || ch =='\\');
  43 }
  44
  45 static inline bool IsAWordStart(const int ch) {
  46         return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '.');
  47 }
  48
  49 inline bool isGCOperator(int ch)
  50 {       if (isalnum(ch))
  51                 return false;
  52         // '.' left out as it is used to make up numbers
  53         if (ch == '*' || ch == '/' || ch == '-' || ch == '+' ||
  54                  ch == '(' || ch == ')' || ch == '=' || ch == '%' ||
  55                  ch == '[' || ch == ']' || ch == '<' || ch == '>' ||
  56                  ch == ',' || ch == ';' || ch == ':')
  57                 return true;
  58         return false;
  59 }
  60
  61 #define isSpace(x)              ((x)==' ' || (x)=='\t')
  62 #define isNL(x)                 ((x)=='\n' || (x)=='\r')
  63 #define isSpaceOrNL(x)  (isSpace(x) || isNL(x))
  64 #define BUFFSIZE 500
  65 #define isFoldPoint(x)  ((styler.LevelAt(x) & SC_FOLDLEVELNUMBERMASK) == 1024)
  66
  67 static void colorFirstWord(WordList *keywordlists[], Accessor &styler,
  68                                                                         StyleContext *sc, char *buff, int length, int)
  69 {
  70         int c = 0;
  71         while (sc->More() && isSpaceOrNL(sc->ch))
  72         {       sc->Forward();
  73         }
  74         styler.ColourTo(sc->currentPos - 1, sc->state);
  75
  76         if (!IsAWordChar(sc->ch)) // comment, marker, etc..
  77                 return;
  78
  79         while (sc->More() && !isSpaceOrNL(sc->ch) && (c < length-1) && !isGCOperator(sc->ch))
  80         {       buff[c] = static_cast<char>(sc->ch);
  81                 ++c; sc->Forward();
  82         }
  83         buff[c] = '\0';
  84         char *p = buff;
  85         while (*p)      // capitalize..
  86         {       if (islower(*p)) *p = static_cast<char>(toupper(*p));
  87                 ++p;
  88         }
  89
  90         WordList &kGlobal               = *keywordlists[0];     // keyword lists set by the user
  91         WordList &kEvent                = *keywordlists[1];
  92         WordList &kAttribute    = *keywordlists[2];
  93         WordList &kControl      = *keywordlists[3];
  94         WordList &kCommand      = *keywordlists[4];
  95
  96         int state = 0;
  97         // int level = styler.LevelAt(line) & SC_FOLDLEVELNUMBERMASK;
  98         // debug ("line = %d, level = %d", line, level);
  99
 100         if           (kGlobal.InList(buff))             state = SCE_GC_GLOBAL;
 101         else if (kAttribute.InList(buff))       state = SCE_GC_ATTRIBUTE;
 102         else if (kControl.InList(buff))         state = SCE_GC_CONTROL;
 103         else if (kCommand.InList(buff))         state = SCE_GC_COMMAND;
 104         else if (kEvent.InList(buff))                   state = SCE_GC_EVENT;
 105
 106         if (state)
 107         {       sc->ChangeState(state);
 108                 styler.ColourTo(sc->currentPos - 1, sc->state);
 109                 sc->ChangeState(SCE_GC_DEFAULT);
 110         }
 111         else
 112         {       sc->ChangeState(SCE_GC_DEFAULT);
 113                 styler.ColourTo(sc->currentPos - 1, sc->state);
 114         }
 115 }
 116
 117 // Main colorizing function called by Scintilla
 118 static void
 119 ColouriseGui4CliDoc(unsigned int startPos, int length, int initStyle,
 120                     WordList *keywordlists[], Accessor &styler)
 121 {
 122         styler.StartAt(startPos);
 123
 124         int quotestart = 0, oldstate, currentline = styler.GetLine(startPos);
 125         styler.StartSegment(startPos);
 126         bool noforward;
 127         char buff[BUFFSIZE+1];  // buffer for command name
 128
 129         StyleContext sc(startPos, length, initStyle, styler);
 130         buff[0] = '\0'; // cbuff = 0;
 131
 132         if (sc.state != SCE_GC_COMMENTBLOCK) // colorize 1st word..
 133                 colorFirstWord(keywordlists, styler, &sc, buff, BUFFSIZE, currentline);
 134
 135         while (sc.More())
 136         {       noforward = 0;
 137
 138                 switch (sc.ch)
 139                 {
 140                         case '/':
 141                                 if (sc.state == SCE_GC_COMMENTBLOCK || sc.state == SCE_GC_STRING)
 142                                         break;
 143                                 if (sc.chNext == '/')   // line comment
 144                                 {       sc.SetState (SCE_GC_COMMENTLINE);
 145                                         sc.Forward();
 146                                         styler.ColourTo(sc.currentPos, sc.state);
 147                                 }
 148                                 else if (sc.chNext == '*')      // block comment
 149                                 {       sc.SetState(SCE_GC_COMMENTBLOCK);
 150                                         sc.Forward();
 151                                         styler.ColourTo(sc.currentPos, sc.state);
 152                                 }
 153                                 else
 154                                         styler.ColourTo(sc.currentPos, sc.state);
 155                                 break;
 156
 157                         case '*':       // end of comment block, or operator..
 158                                 if (sc.state == SCE_GC_STRING)
 159                                         break;
 160                                 if (sc.state == SCE_GC_COMMENTBLOCK && sc.chNext == '/')
 161                                 {       sc.Forward();
 162                                         styler.ColourTo(sc.currentPos, sc.state);
 163                                         sc.ChangeState (SCE_GC_DEFAULT);
 164                                 }
 165                                 else
 166                                         styler.ColourTo(sc.currentPos, sc.state);
 167                                 break;
 168
 169                         case '\'':      case '\"': // strings..
 170                                 if (sc.state == SCE_GC_COMMENTBLOCK || sc.state == SCE_GC_COMMENTLINE)
 171                                         break;
 172                                 if (sc.state == SCE_GC_STRING)
 173                                 {       if (sc.ch == quotestart)        // match same quote char..
 174                                         {       styler.ColourTo(sc.currentPos, sc.state);
 175                                                 sc.ChangeState(SCE_GC_DEFAULT);
 176                                                 quotestart = 0;
 177                                 }       }
 178                                 else
 179                                 {       styler.ColourTo(sc.currentPos - 1, sc.state);
 180                                         sc.ChangeState(SCE_GC_STRING);
 181                                         quotestart = sc.ch;
 182                                 }
 183                                 break;
 184
 185                         case ';':       // end of commandline character
 186                                 if (sc.state != SCE_GC_COMMENTBLOCK && sc.state != SCE_GC_COMMENTLINE &&
 187                                          sc.state != SCE_GC_STRING)
 188                                 {
 189                                         styler.ColourTo(sc.currentPos - 1, sc.state);
 190                                         styler.ColourTo(sc.currentPos, SCE_GC_OPERATOR);
 191                                         sc.ChangeState(SCE_GC_DEFAULT);
 192                                         sc.Forward();
 193                                         colorFirstWord(keywordlists, styler, &sc, buff, BUFFSIZE, currentline);
 194                                         noforward = 1; // don't move forward - already positioned at next char..
 195                                 }
 196                                 break;
 197
 198                         case '+': case '-': case '=':   case '!':       // operators..
 199                         case '<': case '>': case '&': case '|': case '$':
 200                                 if (sc.state != SCE_GC_COMMENTBLOCK && sc.state != SCE_GC_COMMENTLINE &&
 201                                          sc.state != SCE_GC_STRING)
 202                                 {
 203                                         styler.ColourTo(sc.currentPos - 1, sc.state);
 204                                         styler.ColourTo(sc.currentPos, SCE_GC_OPERATOR);
 205                                         sc.ChangeState(SCE_GC_DEFAULT);
 206                                 }
 207                                 break;
 208
 209                         case '\\':      // escape - same as operator, but also mark in strings..
 210                                 if (sc.state != SCE_GC_COMMENTBLOCK && sc.state != SCE_GC_COMMENTLINE)
 211                                 {
 212                                         oldstate = sc.state;
 213                                         styler.ColourTo(sc.currentPos - 1, sc.state);
 214                                         sc.Forward(); // mark also the next char..
 215                                         styler.ColourTo(sc.currentPos, SCE_GC_OPERATOR);
 216                                         sc.ChangeState(oldstate);
 217                                 }
 218                                 break;
 219
 220                         case '\n': case '\r':
 221                                 ++currentline;
 222                                 if (sc.state == SCE_GC_COMMENTLINE)
 223                                 {       styler.ColourTo(sc.currentPos, sc.state);
 224                                         sc.ChangeState (SCE_GC_DEFAULT);
 225                                 }
 226                                 else if (sc.state != SCE_GC_COMMENTBLOCK)
 227                                 {       colorFirstWord(keywordlists, styler, &sc, buff, BUFFSIZE, currentline);
 228                                         noforward = 1; // don't move forward - already positioned at next char..
 229                                 }
 230                                 break;
 231
 232 //                      case ' ': case '\t':
 233 //                      default :
 234                 }
 235
 236                 if (!noforward) sc.Forward();
 237
 238         }
 239         styler.ColourTo(sc.currentPos, sc.state);
 240 }
 241
 242 // Main folding function called by Scintilla - (based on props (.ini) files function)
 243 static void FoldGui4Cli(unsigned int startPos, int length, int,
 244                                                                 WordList *[], Accessor &styler)
 245 {
 246         bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
 247
 248         unsigned int endPos = startPos + length;
 249         int visibleChars = 0;
 250         int lineCurrent = styler.GetLine(startPos);
 251
 252         char chNext = styler[startPos];
 253         int styleNext = styler.StyleAt(startPos);
 254         bool headerPoint = false;
 255
 256         for (unsigned int i = startPos; i < endPos; i++)
 257         {
 258                 char ch = chNext;
 259                 chNext = styler[i+1];
 260
 261                 int style = styleNext;
 262                 styleNext = styler.StyleAt(i + 1);
 263                 bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
 264
 265                 if (style == SCE_GC_EVENT || style == SCE_GC_GLOBAL)
 266                 {       headerPoint = true; // fold at events and globals
 267                 }
 268
 269                 if (atEOL)
 270                 {       int lev = SC_FOLDLEVELBASE+1;
 271
 272                         if (headerPoint)
 273                                 lev = SC_FOLDLEVELBASE;
 274
 275                         if (visibleChars == 0 && foldCompact)
 276                                 lev |= SC_FOLDLEVELWHITEFLAG;
 277
 278                         if (headerPoint)
 279                                 lev |= SC_FOLDLEVELHEADERFLAG;
 280
 281                         if (lev != styler.LevelAt(lineCurrent)) // set level, if not already correct
 282                         {       styler.SetLevel(lineCurrent, lev);
 283                         }
 284
 285                         lineCurrent++;          // re-initialize our flags
 286                         visibleChars = 0;
 287                         headerPoint = false;
 288                 }
 289
 290                 if (!(isspacechar(ch))) // || (style == SCE_GC_COMMENTLINE) || (style != SCE_GC_COMMENTBLOCK)))
 291                         visibleChars++;
 292         }
 293
 294         int lev = headerPoint ? SC_FOLDLEVELBASE : SC_FOLDLEVELBASE+1;
 295         int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
 296         styler.SetLevel(lineCurrent, lev | flagsNext);
 297 }
 298
 299 // I have no idea what these are for.. probably accessible by some message.
 300 static const char * const gui4cliWordListDesc[] = {
 301         "Globals", "Events", "Attributes", "Control", "Commands",
 302         0
 303 };
 304
 305 // Declare language & pass our function pointers to Scintilla
 306 LexerModule lmGui4Cli(SCLEX_GUI4CLI, ColouriseGui4CliDoc, "gui4cli", FoldGui4Cli, gui4cliWordListDesc);
 307
 308 #undef debug
 309