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