ext/scintilla/lexers/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 scripts/HFacer.py script
  10 3. Run the scripts/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 <stdio.h>
  27 #include <stdarg.h>
  28 #include <assert.h>
  29 #include <ctype.h>
  30
  31 #include "ILexer.h"
  32 #include "Scintilla.h"
  33 #include "SciLexer.h"
  34
  35 #include "WordList.h"
  36 #include "LexAccessor.h"
  37 #include "Accessor.h"
  38 #include "StyleContext.h"
  39 #include "CharacterSet.h"
  40 #include "LexerModule.h"
  41
  42 #ifdef SCI_NAMESPACE
  43 using namespace Scintilla;
  44 #endif
  45
  46 #define debug Platform::DebugPrintf
  47
  48 static inline bool IsAWordChar(const int ch) {
  49         return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_' || ch =='\\');
  50 }
  51
  52 inline bool isGCOperator(int ch)
  53 {       if (isalnum(ch))
  54                 return false;
  55         // '.' left out as it is used to make up numbers
  56         if (ch == '*' || ch == '/' || ch == '-' || ch == '+' ||
  57                  ch == '(' || ch == ')' || ch == '=' || ch == '%' ||
  58                  ch == '[' || ch == ']' || ch == '<' || ch == '>' ||
  59                  ch == ',' || ch == ';' || ch == ':')
  60                 return true;
  61         return false;
  62 }
  63
  64 #define isSpace(x)              ((x)==' ' || (x)=='\t')
  65 #define isNL(x)                 ((x)=='\n' || (x)=='\r')
  66 #define isSpaceOrNL(x)  (isSpace(x) || isNL(x))
  67 #define BUFFSIZE 500
  68 #define isFoldPoint(x)  ((styler.LevelAt(x) & SC_FOLDLEVELNUMBERMASK) == 1024)
  69
  70 static void colorFirstWord(WordList *keywordlists[], Accessor &styler,
  71                                                                         StyleContext *sc, char *buff, int length, int)
  72 {
  73         int c = 0;
  74         while (sc->More() && isSpaceOrNL(sc->ch))
  75         {       sc->Forward();
  76         }
  77         styler.ColourTo(sc->currentPos - 1, sc->state);
  78
  79         if (!IsAWordChar(sc->ch)) // comment, marker, etc..
  80                 return;
  81
  82         while (sc->More() && !isSpaceOrNL(sc->ch) && (c < length-1) && !isGCOperator(sc->ch))
  83         {       buff[c] = static_cast<char>(sc->ch);
  84                 ++c; sc->Forward();
  85         }
  86         buff[c] = '\0';
  87         char *p = buff;
  88         while (*p)      // capitalize..
  89         {       if (islower(*p)) *p = static_cast<char>(toupper(*p));
  90                 ++p;
  91         }
  92
  93         WordList &kGlobal               = *keywordlists[0];     // keyword lists set by the user
  94         WordList &kEvent                = *keywordlists[1];
  95         WordList &kAttribute    = *keywordlists[2];
  96         WordList &kControl      = *keywordlists[3];
  97         WordList &kCommand      = *keywordlists[4];
  98
  99         int state = 0;
 100         // int level = styler.LevelAt(line) & SC_FOLDLEVELNUMBERMASK;
 101         // debug ("line = %d, level = %d", line, level);
 102
 103         if           (kGlobal.InList(buff))             state = SCE_GC_GLOBAL;
 104         else if (kAttribute.InList(buff))       state = SCE_GC_ATTRIBUTE;
 105         else if (kControl.InList(buff))         state = SCE_GC_CONTROL;
 106         else if (kCommand.InList(buff))         state = SCE_GC_COMMAND;
 107         else if (kEvent.InList(buff))                   state = SCE_GC_EVENT;
 108
 109         if (state)
 110         {       sc->ChangeState(state);
 111                 styler.ColourTo(sc->currentPos - 1, sc->state);
 112                 sc->ChangeState(SCE_GC_DEFAULT);
 113         }
 114         else
 115         {       sc->ChangeState(SCE_GC_DEFAULT);
 116                 styler.ColourTo(sc->currentPos - 1, sc->state);
 117         }
 118 }
 119
 120 // Main colorizing function called by Scintilla
 121 static void
 122 ColouriseGui4CliDoc(unsigned int startPos, int length, int initStyle,
 123                     WordList *keywordlists[], Accessor &styler)
 124 {
 125         styler.StartAt(startPos);
 126
 127         int quotestart = 0, oldstate, currentline = styler.GetLine(startPos);
 128         styler.StartSegment(startPos);
 129         bool noforward;
 130         char buff[BUFFSIZE+1];  // buffer for command name
 131
 132         StyleContext sc(startPos, length, initStyle, styler);
 133         buff[0] = '\0'; // cbuff = 0;
 134
 135         if (sc.state != SCE_GC_COMMENTBLOCK) // colorize 1st word..
 136                 colorFirstWord(keywordlists, styler, &sc, buff, BUFFSIZE, currentline);
 137
 138         while (sc.More())
 139         {       noforward = 0;
 140
 141                 switch (sc.ch)
 142                 {
 143                         case '/':
 144                                 if (sc.state == SCE_GC_COMMENTBLOCK || sc.state == SCE_GC_STRING)
 145                                         break;
 146                                 if (sc.chNext == '/')   // line comment
 147                                 {       sc.SetState (SCE_GC_COMMENTLINE);
 148                                         sc.Forward();
 149                                         styler.ColourTo(sc.currentPos, sc.state);
 150                                 }
 151                                 else if (sc.chNext == '*')      // block comment
 152                                 {       sc.SetState(SCE_GC_COMMENTBLOCK);
 153                                         sc.Forward();
 154                                         styler.ColourTo(sc.currentPos, sc.state);
 155                                 }
 156                                 else
 157                                         styler.ColourTo(sc.currentPos, sc.state);
 158                                 break;
 159
 160                         case '*':       // end of comment block, or operator..
 161                                 if (sc.state == SCE_GC_STRING)
 162                                         break;
 163                                 if (sc.state == SCE_GC_COMMENTBLOCK && sc.chNext == '/')
 164                                 {       sc.Forward();
 165                                         styler.ColourTo(sc.currentPos, sc.state);
 166                                         sc.ChangeState (SCE_GC_DEFAULT);
 167                                 }
 168                                 else
 169                                         styler.ColourTo(sc.currentPos, sc.state);
 170                                 break;
 171
 172                         case '\'':      case '\"': // strings..
 173                                 if (sc.state == SCE_GC_COMMENTBLOCK || sc.state == SCE_GC_COMMENTLINE)
 174                                         break;
 175                                 if (sc.state == SCE_GC_STRING)
 176                                 {       if (sc.ch == quotestart)        // match same quote char..
 177                                         {       styler.ColourTo(sc.currentPos, sc.state);
 178                                                 sc.ChangeState(SCE_GC_DEFAULT);
 179                                                 quotestart = 0;
 180                                 }       }
 181                                 else
 182                                 {       styler.ColourTo(sc.currentPos - 1, sc.state);
 183                                         sc.ChangeState(SCE_GC_STRING);
 184                                         quotestart = sc.ch;
 185                                 }
 186                                 break;
 187
 188                         case ';':       // end of commandline character
 189                                 if (sc.state != SCE_GC_COMMENTBLOCK && sc.state != SCE_GC_COMMENTLINE &&
 190                                          sc.state != SCE_GC_STRING)
 191                                 {
 192                                         styler.ColourTo(sc.currentPos - 1, sc.state);
 193                                         styler.ColourTo(sc.currentPos, SCE_GC_OPERATOR);
 194                                         sc.ChangeState(SCE_GC_DEFAULT);
 195                                         sc.Forward();
 196                                         colorFirstWord(keywordlists, styler, &sc, buff, BUFFSIZE, currentline);
 197                                         noforward = 1; // don't move forward - already positioned at next char..
 198                                 }
 199                                 break;
 200
 201                         case '+': case '-': case '=':   case '!':       // operators..
 202                         case '<': case '>': case '&': case '|': case '$':
 203                                 if (sc.state != SCE_GC_COMMENTBLOCK && sc.state != SCE_GC_COMMENTLINE &&
 204                                          sc.state != SCE_GC_STRING)
 205                                 {
 206                                         styler.ColourTo(sc.currentPos - 1, sc.state);
 207                                         styler.ColourTo(sc.currentPos, SCE_GC_OPERATOR);
 208                                         sc.ChangeState(SCE_GC_DEFAULT);
 209                                 }
 210                                 break;
 211
 212                         case '\\':      // escape - same as operator, but also mark in strings..
 213                                 if (sc.state != SCE_GC_COMMENTBLOCK && sc.state != SCE_GC_COMMENTLINE)
 214                                 {
 215                                         oldstate = sc.state;
 216                                         styler.ColourTo(sc.currentPos - 1, sc.state);
 217                                         sc.Forward(); // mark also the next char..
 218                                         styler.ColourTo(sc.currentPos, SCE_GC_OPERATOR);
 219                                         sc.ChangeState(oldstate);
 220                                 }
 221                                 break;
 222
 223                         case '\n': case '\r':
 224                                 ++currentline;
 225                                 if (sc.state == SCE_GC_COMMENTLINE)
 226                                 {       styler.ColourTo(sc.currentPos, sc.state);
 227                                         sc.ChangeState (SCE_GC_DEFAULT);
 228                                 }
 229                                 else if (sc.state != SCE_GC_COMMENTBLOCK)
 230                                 {       colorFirstWord(keywordlists, styler, &sc, buff, BUFFSIZE, currentline);
 231                                         noforward = 1; // don't move forward - already positioned at next char..
 232                                 }
 233                                 break;
 234
 235 //                      case ' ': case '\t':
 236 //                      default :
 237                 }
 238
 239                 if (!noforward) sc.Forward();
 240
 241         }
 242         sc.Complete();
 243 }
 244
 245 // Main folding function called by Scintilla - (based on props (.ini) files function)
 246 static void FoldGui4Cli(unsigned int startPos, int length, int,
 247                                                                 WordList *[], Accessor &styler)
 248 {
 249         bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
 250
 251         unsigned int endPos = startPos + length;
 252         int visibleChars = 0;
 253         int lineCurrent = styler.GetLine(startPos);
 254
 255         char chNext = styler[startPos];
 256         int styleNext = styler.StyleAt(startPos);
 257         bool headerPoint = false;
 258
 259         for (unsigned int i = startPos; i < endPos; i++)
 260         {
 261                 char ch = chNext;
 262                 chNext = styler[i+1];
 263
 264                 int style = styleNext;
 265                 styleNext = styler.StyleAt(i + 1);
 266                 bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
 267
 268                 if (style == SCE_GC_EVENT || style == SCE_GC_GLOBAL)
 269                 {       headerPoint = true; // fold at events and globals
 270                 }
 271
 272                 if (atEOL)
 273                 {       int lev = SC_FOLDLEVELBASE+1;
 274
 275                         if (headerPoint)
 276                                 lev = SC_FOLDLEVELBASE;
 277
 278                         if (visibleChars == 0 && foldCompact)
 279                                 lev |= SC_FOLDLEVELWHITEFLAG;
 280
 281                         if (headerPoint)
 282                                 lev |= SC_FOLDLEVELHEADERFLAG;
 283
 284                         if (lev != styler.LevelAt(lineCurrent)) // set level, if not already correct
 285                         {       styler.SetLevel(lineCurrent, lev);
 286                         }
 287
 288                         lineCurrent++;          // re-initialize our flags
 289                         visibleChars = 0;
 290                         headerPoint = false;
 291                 }
 292
 293                 if (!(isspacechar(ch))) // || (style == SCE_GC_COMMENTLINE) || (style != SCE_GC_COMMENTBLOCK)))
 294                         visibleChars++;
 295         }
 296
 297         int lev = headerPoint ? SC_FOLDLEVELBASE : SC_FOLDLEVELBASE+1;
 298         int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
 299         styler.SetLevel(lineCurrent, lev | flagsNext);
 300 }
 301
 302 // I have no idea what these are for.. probably accessible by some message.
 303 static const char * const gui4cliWordListDesc[] = {
 304         "Globals", "Events", "Attributes", "Control", "Commands",
 305         0
 306 };
 307
 308 // Declare language & pass our function pointers to Scintilla
 309 LexerModule lmGui4Cli(SCLEX_GUI4CLI, ColouriseGui4CliDoc, "gui4cli", FoldGui4Cli, gui4cliWordListDesc);
 310
 311 #undef debug
 312