src/stc/scintilla/src/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 #ifdef SCI_NAMESPACE
  40 using namespace Scintilla;
  41 #endif
  42
  43 #define debug Platform::DebugPrintf
  44
  45 static inline bool IsAWordChar(const int ch) {
  46         return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_' || ch =='\\');
  47 }
  48
  49 static inline bool IsAWordStart(const int ch) {
  50         return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '.');
  51 }
  52
  53 inline bool isGCOperator(int ch)
  54 {       if (isalnum(ch))
  55                 return false;
  56         // '.' left out as it is used to make up numbers
  57         if (ch == '*' || ch == '/' || ch == '-' || ch == '+' ||
  58                  ch == '(' || ch == ')' || ch == '=' || ch == '%' ||
  59                  ch == '[' || ch == ']' || ch == '<' || ch == '>' ||
  60                  ch == ',' || ch == ';' || ch == ':')
  61                 return true;
  62         return false;
  63 }
  64
  65 #define isSpace(x)              ((x)==' ' || (x)=='\t')
  66 #define isNL(x)                 ((x)=='\n' || (x)=='\r')
  67 #define isSpaceOrNL(x)  (isSpace(x) || isNL(x))
  68 #define BUFFSIZE 500
  69 #define isFoldPoint(x)  ((styler.LevelAt(x) & SC_FOLDLEVELNUMBERMASK) == 1024)
  70
  71 static void colorFirstWord(WordList *keywordlists[], Accessor &styler,
  72                                                                         StyleContext *sc, char *buff, int length, int)
  73 {
  74         int c = 0;
  75         while (sc->More() && isSpaceOrNL(sc->ch))
  76         {       sc->Forward();
  77         }
  78         styler.ColourTo(sc->currentPos - 1, sc->state);
  79
  80         if (!IsAWordChar(sc->ch)) // comment, marker, etc..
  81                 return;
  82
  83         while (sc->More() && !isSpaceOrNL(sc->ch) && (c < length-1) && !isGCOperator(sc->ch))
  84         {       buff[c] = static_cast<char>(sc->ch);
  85                 ++c; sc->Forward();
  86         }
  87         buff[c] = '\0';
  88         char *p = buff;
  89         while (*p)      // capitalize..
  90         {       if (islower(*p)) *p = static_cast<char>(toupper(*p));
  91                 ++p;
  92         }
  93
  94         WordList &kGlobal               = *keywordlists[0];     // keyword lists set by the user
  95         WordList &kEvent                = *keywordlists[1];
  96         WordList &kAttribute    = *keywordlists[2];
  97         WordList &kControl      = *keywordlists[3];
  98         WordList &kCommand      = *keywordlists[4];
  99
 100         int state = 0;
 101         // int level = styler.LevelAt(line) & SC_FOLDLEVELNUMBERMASK;
 102         // debug ("line = %d, level = %d", line, level);
 103
 104         if           (kGlobal.InList(buff))             state = SCE_GC_GLOBAL;
 105         else if (kAttribute.InList(buff))       state = SCE_GC_ATTRIBUTE;
 106         else if (kControl.InList(buff))         state = SCE_GC_CONTROL;
 107         else if (kCommand.InList(buff))         state = SCE_GC_COMMAND;
 108         else if (kEvent.InList(buff))                   state = SCE_GC_EVENT;
 109
 110         if (state)
 111         {       sc->ChangeState(state);
 112                 styler.ColourTo(sc->currentPos - 1, sc->state);
 113                 sc->ChangeState(SCE_GC_DEFAULT);
 114         }
 115         else
 116         {       sc->ChangeState(SCE_GC_DEFAULT);
 117                 styler.ColourTo(sc->currentPos - 1, sc->state);
 118         }
 119 }
 120
 121 // Main colorizing function called by Scintilla
 122 static void
 123 ColouriseGui4CliDoc(unsigned int startPos, int length, int initStyle,
 124                     WordList *keywordlists[], Accessor &styler)
 125 {
 126         styler.StartAt(startPos);
 127
 128         int quotestart = 0, oldstate, currentline = styler.GetLine(startPos);
 129         styler.StartSegment(startPos);
 130         bool noforward;
 131         char buff[BUFFSIZE+1];  // buffer for command name
 132
 133         StyleContext sc(startPos, length, initStyle, styler);
 134         buff[0] = '\0'; // cbuff = 0;
 135
 136         if (sc.state != SCE_GC_COMMENTBLOCK) // colorize 1st word..
 137                 colorFirstWord(keywordlists, styler, &sc, buff, BUFFSIZE, currentline);
 138
 139         while (sc.More())
 140         {       noforward = 0;
 141
 142                 switch (sc.ch)
 143                 {
 144                         case '/':
 145                                 if (sc.state == SCE_GC_COMMENTBLOCK || sc.state == SCE_GC_STRING)
 146                                         break;
 147                                 if (sc.chNext == '/')   // line comment
 148                                 {       sc.SetState (SCE_GC_COMMENTLINE);
 149                                         sc.Forward();
 150                                         styler.ColourTo(sc.currentPos, sc.state);
 151                                 }
 152                                 else if (sc.chNext == '*')      // block comment
 153                                 {       sc.SetState(SCE_GC_COMMENTBLOCK);
 154                                         sc.Forward();
 155                                         styler.ColourTo(sc.currentPos, sc.state);
 156                                 }
 157                                 else
 158                                         styler.ColourTo(sc.currentPos, sc.state);
 159                                 break;
 160
 161                         case '*':       // end of comment block, or operator..
 162                                 if (sc.state == SCE_GC_STRING)
 163                                         break;
 164                                 if (sc.state == SCE_GC_COMMENTBLOCK && sc.chNext == '/')
 165                                 {       sc.Forward();
 166                                         styler.ColourTo(sc.currentPos, sc.state);
 167                                         sc.ChangeState (SCE_GC_DEFAULT);
 168                                 }
 169                                 else
 170                                         styler.ColourTo(sc.currentPos, sc.state);
 171                                 break;
 172
 173                         case '\'':      case '\"': // strings..
 174                                 if (sc.state == SCE_GC_COMMENTBLOCK || sc.state == SCE_GC_COMMENTLINE)
 175                                         break;
 176                                 if (sc.state == SCE_GC_STRING)
 177                                 {       if (sc.ch == quotestart)        // match same quote char..
 178                                         {       styler.ColourTo(sc.currentPos, sc.state);
 179                                                 sc.ChangeState(SCE_GC_DEFAULT);
 180                                                 quotestart = 0;
 181                                 }       }
 182                                 else
 183                                 {       styler.ColourTo(sc.currentPos - 1, sc.state);
 184                                         sc.ChangeState(SCE_GC_STRING);
 185                                         quotestart = sc.ch;
 186                                 }
 187                                 break;
 188
 189                         case ';':       // end of commandline character
 190                                 if (sc.state != SCE_GC_COMMENTBLOCK && sc.state != SCE_GC_COMMENTLINE &&
 191                                          sc.state != SCE_GC_STRING)
 192                                 {
 193                                         styler.ColourTo(sc.currentPos - 1, sc.state);
 194                                         styler.ColourTo(sc.currentPos, SCE_GC_OPERATOR);
 195                                         sc.ChangeState(SCE_GC_DEFAULT);
 196                                         sc.Forward();
 197                                         colorFirstWord(keywordlists, styler, &sc, buff, BUFFSIZE, currentline);
 198                                         noforward = 1; // don't move forward - already positioned at next char..
 199                                 }
 200                                 break;
 201
 202                         case '+': case '-': case '=':   case '!':       // operators..
 203                         case '<': case '>': case '&': case '|': case '$':
 204                                 if (sc.state != SCE_GC_COMMENTBLOCK && sc.state != SCE_GC_COMMENTLINE &&
 205                                          sc.state != SCE_GC_STRING)
 206                                 {
 207                                         styler.ColourTo(sc.currentPos - 1, sc.state);
 208                                         styler.ColourTo(sc.currentPos, SCE_GC_OPERATOR);
 209                                         sc.ChangeState(SCE_GC_DEFAULT);
 210                                 }
 211                                 break;
 212
 213                         case '\\':      // escape - same as operator, but also mark in strings..
 214                                 if (sc.state != SCE_GC_COMMENTBLOCK && sc.state != SCE_GC_COMMENTLINE)
 215                                 {
 216                                         oldstate = sc.state;
 217                                         styler.ColourTo(sc.currentPos - 1, sc.state);
 218                                         sc.Forward(); // mark also the next char..
 219                                         styler.ColourTo(sc.currentPos, SCE_GC_OPERATOR);
 220                                         sc.ChangeState(oldstate);
 221                                 }
 222                                 break;
 223
 224                         case '\n': case '\r':
 225                                 ++currentline;
 226                                 if (sc.state == SCE_GC_COMMENTLINE)
 227                                 {       styler.ColourTo(sc.currentPos, sc.state);
 228                                         sc.ChangeState (SCE_GC_DEFAULT);
 229                                 }
 230                                 else if (sc.state != SCE_GC_COMMENTBLOCK)
 231                                 {       colorFirstWord(keywordlists, styler, &sc, buff, BUFFSIZE, currentline);
 232                                         noforward = 1; // don't move forward - already positioned at next char..
 233                                 }
 234                                 break;
 235
 236 //                      case ' ': case '\t':
 237 //                      default :
 238                 }
 239
 240                 if (!noforward) sc.Forward();
 241
 242         }
 243         sc.Complete();
 244 }
 245
 246 // Main folding function called by Scintilla - (based on props (.ini) files function)
 247 static void FoldGui4Cli(unsigned int startPos, int length, int,
 248                                                                 WordList *[], Accessor &styler)
 249 {
 250         bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
 251
 252         unsigned int endPos = startPos + length;
 253         int visibleChars = 0;
 254         int lineCurrent = styler.GetLine(startPos);
 255
 256         char chNext = styler[startPos];
 257         int styleNext = styler.StyleAt(startPos);
 258         bool headerPoint = false;
 259
 260         for (unsigned int i = startPos; i < endPos; i++)
 261         {
 262                 char ch = chNext;
 263                 chNext = styler[i+1];
 264
 265                 int style = styleNext;
 266                 styleNext = styler.StyleAt(i + 1);
 267                 bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
 268
 269                 if (style == SCE_GC_EVENT || style == SCE_GC_GLOBAL)
 270                 {       headerPoint = true; // fold at events and globals
 271                 }
 272
 273                 if (atEOL)
 274                 {       int lev = SC_FOLDLEVELBASE+1;
 275
 276                         if (headerPoint)
 277                                 lev = SC_FOLDLEVELBASE;
 278
 279                         if (visibleChars == 0 && foldCompact)
 280                                 lev |= SC_FOLDLEVELWHITEFLAG;
 281
 282                         if (headerPoint)
 283                                 lev |= SC_FOLDLEVELHEADERFLAG;
 284
 285                         if (lev != styler.LevelAt(lineCurrent)) // set level, if not already correct
 286                         {       styler.SetLevel(lineCurrent, lev);
 287                         }
 288
 289                         lineCurrent++;          // re-initialize our flags
 290                         visibleChars = 0;
 291                         headerPoint = false;
 292                 }
 293
 294                 if (!(isspacechar(ch))) // || (style == SCE_GC_COMMENTLINE) || (style != SCE_GC_COMMENTBLOCK)))
 295                         visibleChars++;
 296         }
 297
 298         int lev = headerPoint ? SC_FOLDLEVELBASE : SC_FOLDLEVELBASE+1;
 299         int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
 300         styler.SetLevel(lineCurrent, lev | flagsNext);
 301 }
 302
 303 // I have no idea what these are for.. probably accessible by some message.
 304 static const char * const gui4cliWordListDesc[] = {
 305         "Globals", "Events", "Attributes", "Control", "Commands",
 306         0
 307 };
 308
 309 // Declare language & pass our function pointers to Scintilla
 310 LexerModule lmGui4Cli(SCLEX_GUI4CLI, ColouriseGui4CliDoc, "gui4cli", FoldGui4Cli, gui4cliWordListDesc);
 311
 312 #undef debug
 313