src/stc/scintilla/src/LexPowerPro.cxx

   1 // Scintilla source code edit control
   2 // @file LexPowerPro.cxx
   3 // PowerPro utility, written by Bruce Switzer, is available from http://powerpro.webeddie.com
   4 // PowerPro lexer is written by Christopher Bean (cbean@cb-software.net)
   5 //
   6 // Lexer code heavily borrowed from:
   7 //      LexAU3.cxx by Jos van der Zande
   8 //      LexCPP.cxx by Neil Hodgson
   9 //      LexVB.cxx by Neil Hodgson
  10 //
  11 // Changes:
  12 //      2008-10-25 - Initial release
  13 //      2008-10-26 - Changed how <name> is hilighted in  'function <name>' so that
  14 //                               local isFunction = "" and local functions = "" don't get falsely highlighted
  15 //      2008-12-14 - Added bounds checking for szKeyword and szDo
  16 //                         - Replaced SetOfCharacters with CharacterSet
  17 //                         - Made sure that CharacterSet::Contains is passed only positive values
  18 //                         - Made sure that the return value of Accessor::SafeGetCharAt is positive before
  19 //                               passsing to functions that require positive values like isspacechar()
  20 //                         - Removed unused visibleChars processing from ColourisePowerProDoc()
  21 //                         - Fixed bug with folding logic where line continuations didn't end where
  22 //                               they were supposed to
  23 //                         - Moved all helper functions to the top of the file
  24 //
  25 // Copyright 1998-2005 by Neil Hodgson <neilh@scintilla.org>
  26 // The License.txt file describes the conditions under which this software may be distributed.
  27
  28 #include <ctype.h>
  29 #include <stdarg.h>
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33
  34 #include "Platform.h"
  35 #include "PropSet.h"
  36 #include "Accessor.h"
  37 #include "StyleContext.h"
  38 #include "KeyWords.h"
  39 #include "Scintilla.h"
  40 #include "SciLexer.h"
  41 #include "CharacterSet.h"
  42
  43 #ifdef SCI_NAMESPACE
  44 using namespace Scintilla;
  45 #endif
  46
  47 static inline bool IsStreamCommentStyle(int style) {
  48         return style == SCE_POWERPRO_COMMENTBLOCK;
  49 }
  50
  51 static bool IsContinuationLine(unsigned int szLine, Accessor &styler)
  52 {
  53         int nsPos = styler.LineStart(szLine);
  54         int nePos = styler.LineStart(szLine + 1) - 2;
  55         while (nsPos < nePos)
  56         {
  57                 int stylech = styler.StyleAt(nsPos);
  58                 if (!(stylech == SCE_POWERPRO_COMMENTBLOCK)) {
  59                         char ch = styler.SafeGetCharAt(nePos);
  60                         char chPrev = styler.SafeGetCharAt(nePos-1);
  61                         char chPrevPrev = styler.SafeGetCharAt(nePos-2);
  62                         if (ch > 0 && chPrev > 0 && chPrevPrev > 0 && !isspacechar(ch) && !isspacechar(chPrev) && !isspacechar(chPrevPrev) ) {
  63                                 if (chPrevPrev == ';' && chPrev == ';' && ch == '+')
  64                                         return true;
  65                                 else
  66                                         return false;
  67                         }
  68                 }
  69                 nePos--; // skip to next char
  70         }
  71         return false;
  72 }
  73
  74 // Routine to find first none space on the current line and return its Style
  75 // needed for comment lines not starting on pos 1
  76 static int GetStyleFirstWord(unsigned int szLine, Accessor &styler)
  77 {
  78         int nsPos = styler.LineStart(szLine);
  79         int nePos = styler.LineStart(szLine+1) - 1;
  80         char ch = styler.SafeGetCharAt(nsPos);
  81
  82         while (ch > 0 && isspacechar(ch) && nsPos < nePos)
  83         {
  84                 nsPos++; // skip to next char
  85                 ch = styler.SafeGetCharAt(nsPos);
  86
  87         }
  88         return styler.StyleAt(nsPos);
  89 }
  90
  91 //returns true if there is a function to highlight
  92 //used to highlight <name> in 'function <name>'
  93 static bool HasFunction(Accessor &styler, unsigned int currentPos) {
  94
  95         //check for presence of 'function '
  96         return  (styler.SafeGetCharAt(currentPos) == ' '
  97         && tolower(styler.SafeGetCharAt(currentPos-1)) == 'n'
  98         && tolower(styler.SafeGetCharAt(currentPos-2)) == 'o'
  99         && tolower(styler.SafeGetCharAt(currentPos-3)) == 'i'
 100         && tolower(styler.SafeGetCharAt(currentPos-4)) == 't'
 101         && tolower(styler.SafeGetCharAt(currentPos-5)) == 'c'
 102         && tolower(styler.SafeGetCharAt(currentPos-6)) == 'n'
 103         && tolower(styler.SafeGetCharAt(currentPos-7)) == 'u'
 104         && tolower(styler.SafeGetCharAt(currentPos-8)) == 'f'
 105         //only allow 'function ' to appear at the beginning of a line
 106         && (styler.SafeGetCharAt(currentPos-9) == '\n'
 107                 || styler.SafeGetCharAt(currentPos-9) == '\r'
 108                 || (styler.SafeGetCharAt(currentPos -9, '\0')) == '\0') //is the first line
 109         );
 110 }
 111
 112 static void ColourisePowerProDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
 113                             Accessor &styler, bool caseSensitive) {
 114
 115         WordList &keywords  = *keywordlists[0];
 116         WordList &keywords2 = *keywordlists[1];
 117         WordList &keywords3 = *keywordlists[2];
 118         WordList &keywords4 = *keywordlists[3];
 119
 120         //define the character sets
 121         CharacterSet setWordStart(CharacterSet::setAlpha, "_@", 0x80, true);
 122         CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);
 123
 124         StyleContext sc(startPos, length, initStyle, styler);
 125         char s_save[100]; //for last line highlighting
 126
 127         for (; sc.More(); sc.Forward()) {
 128
 129                 // **********************************************
 130                 // save the total current word for eof processing
 131                 char s[100];
 132                 sc.GetCurrentLowered(s, sizeof(s));
 133
 134                 if ((sc.ch > 0) && setWord.Contains(sc.ch))
 135                 {
 136                         strcpy(s_save,s);
 137                         int tp = strlen(s_save);
 138                         if (tp < 99) {
 139                                 s_save[tp] = static_cast<char>(tolower(sc.ch));
 140                                 s_save[tp+1] = '\0';
 141                         }
 142                 }
 143                 // **********************************************
 144                 //
 145
 146                 if (sc.atLineStart) {
 147                         if (sc.state == SCE_POWERPRO_DOUBLEQUOTEDSTRING) {
 148                                 // Prevent SCE_POWERPRO_STRINGEOL from leaking back to previous line which
 149                                 // ends with a line continuation by locking in the state upto this position.
 150                                 sc.SetState(SCE_POWERPRO_DOUBLEQUOTEDSTRING);
 151                         }
 152                 }
 153
 154                 // Determine if the current state should terminate.
 155                 switch (sc.state) {
 156                         case SCE_POWERPRO_OPERATOR:
 157                                 sc.SetState(SCE_POWERPRO_DEFAULT);
 158                                 break;
 159
 160                         case SCE_POWERPRO_NUMBER:
 161
 162                                 if (!IsADigit(sc.ch))
 163                                         sc.SetState(SCE_POWERPRO_DEFAULT);
 164
 165                                 break;
 166
 167                         case SCE_POWERPRO_IDENTIFIER:
 168                                 //if ((sc.ch > 0) && !setWord.Contains(sc.ch) || (sc.ch == '.')) { // use this line if don't want to match keywords with . in them. ie: win.debug will match both win and debug so win debug will also be colorized
 169                                 if ((sc.ch > 0) && !setWord.Contains(sc.ch)){  // || (sc.ch == '.')) { // use this line if you want to match keywords with a . ie: win.debug will only match win.debug neither win nor debug will be colorized separately
 170                                         char s[1000];
 171                                         if (caseSensitive) {
 172                                                 sc.GetCurrent(s, sizeof(s));
 173                                         } else {
 174                                                 sc.GetCurrentLowered(s, sizeof(s));
 175                                         }
 176                                         if (keywords.InList(s)) {
 177                                                 sc.ChangeState(SCE_POWERPRO_WORD);
 178                                         } else if (keywords2.InList(s)) {
 179                                                 sc.ChangeState(SCE_POWERPRO_WORD2);
 180                                         } else if (keywords3.InList(s)) {
 181                                                 sc.ChangeState(SCE_POWERPRO_WORD3);
 182                                         } else if (keywords4.InList(s)) {
 183                                                 sc.ChangeState(SCE_POWERPRO_WORD4);
 184                                         }
 185                                         sc.SetState(SCE_POWERPRO_DEFAULT);
 186                                 }
 187                                 break;
 188
 189                         case SCE_POWERPRO_LINECONTINUE:
 190                                 if (sc.atLineStart) {
 191                                         sc.SetState(SCE_POWERPRO_DEFAULT);
 192                                 } else if (sc.Match('/', '*') || sc.Match('/', '/')) {
 193                                         sc.SetState(SCE_POWERPRO_DEFAULT);
 194                                 }
 195                                 break;
 196
 197                         case SCE_POWERPRO_COMMENTBLOCK:
 198                                 if (sc.Match('*', '/')) {
 199                                         sc.Forward();
 200                                         sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
 201                                 }
 202                                 break;
 203
 204                         case SCE_POWERPRO_COMMENTLINE:
 205                                 if (sc.atLineStart) {
 206                                         sc.SetState(SCE_POWERPRO_DEFAULT);
 207                                 }
 208                                 break;
 209
 210                         case SCE_POWERPRO_DOUBLEQUOTEDSTRING:
 211                                 if (sc.atLineEnd) {
 212                                         sc.ChangeState(SCE_POWERPRO_STRINGEOL);
 213                                 } else if (sc.ch == '\\') {
 214                                         if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
 215                                                 sc.Forward();
 216                                         }
 217                                 } else if (sc.ch == '\"') {
 218                                         sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
 219                                 }
 220                                 break;
 221
 222                         case SCE_POWERPRO_SINGLEQUOTEDSTRING:
 223                                 if (sc.atLineEnd) {
 224                                         sc.ChangeState(SCE_POWERPRO_STRINGEOL);
 225                                 } else if (sc.ch == '\\') {
 226                                         if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
 227                                                 sc.Forward();
 228                                         }
 229                                 } else if (sc.ch == '\'') {
 230                                         sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
 231                                 }
 232                                 break;
 233
 234                         case SCE_POWERPRO_STRINGEOL:
 235                                 if (sc.atLineStart) {
 236                                         sc.SetState(SCE_POWERPRO_DEFAULT);
 237                                 }
 238                                 break;
 239
 240                         case SCE_POWERPRO_VERBATIM:
 241                                 if (sc.ch == '\"') {
 242                                         if (sc.chNext == '\"') {
 243                                                 sc.Forward();
 244                                         } else {
 245                                                 sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
 246                                         }
 247                                 }
 248                                 break;
 249
 250                         case SCE_POWERPRO_ALTQUOTE:
 251                                 if (sc.ch == '#') {
 252                                         if (sc.chNext == '#') {
 253                                                 sc.Forward();
 254                                         } else {
 255                                                 sc.ForwardSetState(SCE_POWERPRO_DEFAULT);
 256                                         }
 257                                 }
 258                                 break;
 259
 260                         case SCE_POWERPRO_FUNCTION:
 261                                 if (sc.ch == '\r' || sc.ch == '\n' || sc.ch == ' ' || sc.ch == '(') {
 262                                         sc.SetState(SCE_POWERPRO_DEFAULT);
 263                                 }
 264                         break;
 265                 }
 266
 267                 // Determine if a new state should be entered.
 268                 if (sc.state == SCE_POWERPRO_DEFAULT) {
 269                         if (sc.Match('?', '\"')) {
 270                                 sc.SetState(SCE_POWERPRO_VERBATIM);
 271                                 sc.Forward();
 272                         } else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
 273                                 sc.SetState(SCE_POWERPRO_NUMBER);
 274                         }else if (sc.Match('?','#')) {
 275                                 if (sc.ch == '?' && sc.chNext == '#') {
 276                                         sc.SetState(SCE_POWERPRO_ALTQUOTE);
 277                                         sc.Forward();
 278                                 }
 279                         } else if (HasFunction(styler, sc.currentPos)) {        //highlight <name> in 'function <name>'
 280                                 sc.SetState(SCE_POWERPRO_FUNCTION);
 281                         } else if (sc.ch == '@' && sc.atLineStart) {            //alternate function definition [label]
 282                                 sc.SetState(SCE_POWERPRO_FUNCTION);
 283                         } else if ((sc.ch > 0) && (setWordStart.Contains(sc.ch) || (sc.ch == '?'))) {
 284                                 sc.SetState(SCE_POWERPRO_IDENTIFIER);
 285                         } else if (sc.Match(";;+")) {
 286                                 sc.SetState(SCE_POWERPRO_LINECONTINUE);
 287                         } else if (sc.Match('/', '*')) {
 288                                 sc.SetState(SCE_POWERPRO_COMMENTBLOCK);
 289                                 sc.Forward();   // Eat the * so it isn't used for the end of the comment
 290                         } else if (sc.Match('/', '/')) {
 291                                 sc.SetState(SCE_POWERPRO_COMMENTLINE);
 292                         } else if (sc.atLineStart && sc.ch == ';') {            //legacy comment that can only appear at the beginning of a line
 293                                 sc.SetState(SCE_POWERPRO_COMMENTLINE);
 294                         } else if (sc.Match(";;")) {
 295                                 sc.SetState(SCE_POWERPRO_COMMENTLINE);
 296                         } else if (sc.ch == '\"') {
 297                                 sc.SetState(SCE_POWERPRO_DOUBLEQUOTEDSTRING);
 298                         } else if (sc.ch == '\'') {
 299                                 sc.SetState(SCE_POWERPRO_SINGLEQUOTEDSTRING);
 300                         } else if (isoperator(static_cast<char>(sc.ch))) {
 301                                 sc.SetState(SCE_POWERPRO_OPERATOR);
 302                         }
 303                 }
 304         }
 305
 306         //*************************************
 307         // Colourize the last word correctly
 308         //*************************************
 309         if (sc.state == SCE_POWERPRO_IDENTIFIER)
 310         {
 311                 if (keywords.InList(s_save)) {
 312                         sc.ChangeState(SCE_POWERPRO_WORD);
 313                         sc.SetState(SCE_POWERPRO_DEFAULT);
 314                 }
 315                 else if (keywords2.InList(s_save)) {
 316                         sc.ChangeState(SCE_POWERPRO_WORD2);
 317                         sc.SetState(SCE_POWERPRO_DEFAULT);
 318                 }
 319                 else if (keywords3.InList(s_save)) {
 320                         sc.ChangeState(SCE_POWERPRO_WORD3);
 321                         sc.SetState(SCE_POWERPRO_DEFAULT);
 322                 }
 323                 else if (keywords4.InList(s_save)) {
 324                         sc.ChangeState(SCE_POWERPRO_WORD4);
 325                         sc.SetState(SCE_POWERPRO_DEFAULT);
 326                 }
 327                 else {
 328                         sc.SetState(SCE_POWERPRO_DEFAULT);
 329                 }
 330         }
 331         sc.Complete();
 332 }
 333
 334 static void FoldPowerProDoc(unsigned int startPos, int length, int, WordList *[], Accessor &styler)
 335 {
 336         //define the character sets
 337         CharacterSet setWordStart(CharacterSet::setAlpha, "_@", 0x80, true);
 338         CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);
 339
 340         bool isFoldingAll = true; //used to tell if we're recursively folding the whole document, or just a small piece (ie: if statement or 1 function)
 341         int endPos = startPos + length;
 342         int lastLine = styler.GetLine(styler.Length()); //used to help fold the last line correctly
 343
 344         // get settings from the config files for folding comments and preprocessor lines
 345         bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
 346         bool foldInComment = styler.GetPropertyInt("fold.comment") == 2;
 347         bool foldCompact = true;
 348
 349         // Backtrack to previous line in case need to fix its fold status
 350         int lineCurrent = styler.GetLine(startPos);
 351         if (startPos > 0) {
 352                 isFoldingAll = false;
 353                 if (lineCurrent > 0) {
 354                         lineCurrent--;
 355                         startPos = styler.LineStart(lineCurrent);
 356                 }
 357         }
 358         // vars for style of previous/current/next lines
 359         int style = GetStyleFirstWord(lineCurrent,styler);
 360         int stylePrev = 0;
 361
 362         // find the first previous line without continuation character at the end
 363         while ((lineCurrent > 0 && IsContinuationLine(lineCurrent,styler)) ||
 364                (lineCurrent > 1 && IsContinuationLine(lineCurrent-1,styler))) {
 365                 lineCurrent--;
 366                 startPos = styler.LineStart(lineCurrent);
 367         }
 368         if (lineCurrent > 0) {
 369                 stylePrev = GetStyleFirstWord(lineCurrent-1,styler);
 370         }
 371         // vars for getting first word to check for keywords
 372         bool FirstWordStart = false;
 373         bool FirstWordEnd = false;
 374
 375         const unsigned int KEYWORD_MAX = 10;
 376         char szKeyword[KEYWORD_MAX]="";
 377         unsigned int     szKeywordlen = 0;
 378
 379         char szDo[3]="";
 380         int      szDolen = 0;
 381         bool DoFoundLast = false;
 382
 383         // var for indentlevel
 384         int levelCurrent = SC_FOLDLEVELBASE;
 385         if (lineCurrent > 0) {
 386                 levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
 387         }
 388         int levelNext = levelCurrent;
 389
 390         int     visibleChars = 0;
 391         int functionCount = 0;
 392
 393         char chNext = styler.SafeGetCharAt(startPos);
 394         char chPrev = '\0';
 395         char chPrevPrev = '\0';
 396         char chPrevPrevPrev = '\0';
 397
 398         for (int i = startPos; i < endPos; i++) {
 399
 400                 char ch = chNext;
 401                 chNext = styler.SafeGetCharAt(i + 1);
 402
 403                 if ((ch > 0) && setWord.Contains(ch)) {
 404                         visibleChars++;
 405                 }
 406
 407                 // get the syle for the current character neede to check in comment
 408                 int stylech = styler.StyleAt(i);
 409
 410                 // get first word for the line for indent check max 9 characters
 411                 if (FirstWordStart && (!(FirstWordEnd))) {
 412                         if ((ch > 0) && !setWord.Contains(ch)) {
 413                                 FirstWordEnd = true;
 414                         }
 415                         else if (szKeywordlen < KEYWORD_MAX - 1) {
 416                                 szKeyword[szKeywordlen++] = static_cast<char>(tolower(ch));
 417                                 szKeyword[szKeywordlen] = '\0';
 418                         }
 419                 }
 420
 421                 // start the capture of the first word
 422                 if (!(FirstWordStart)) {
 423                         if ((ch > 0) && (setWord.Contains(ch) || setWordStart.Contains(ch) || ch == ';' || ch == '/')) {
 424                                 FirstWordStart = true;
 425                                 if (szKeywordlen < KEYWORD_MAX - 1) {
 426                                         szKeyword[szKeywordlen++] = static_cast<char>(tolower(ch));
 427                                         szKeyword[szKeywordlen] = '\0';
 428                                 }
 429                         }
 430                 }
 431                 // only process this logic when not in comment section
 432                 if (stylech != SCE_POWERPRO_COMMENTLINE) {
 433                         if (DoFoundLast) {
 434                                 if (DoFoundLast && (ch > 0) && setWord.Contains(ch)) {
 435                                         DoFoundLast = false;
 436                                 }
 437                         }
 438                         // find out if the word "do" is the last on a "if" line
 439                         if (FirstWordEnd && strcmp(szKeyword,"if") == 0) {
 440                                 if (szDolen == 2) {
 441                                         szDo[0] = szDo[1];
 442                                         szDo[1] = static_cast<char>(tolower(ch));
 443                                         szDo[2] = '\0';
 444                                         if (strcmp(szDo,"do") == 0 ) {
 445                                                 DoFoundLast = true;
 446                                         }
 447                                 }
 448                                 else if (szDolen < 2) {
 449                                         szDo[szDolen++] = static_cast<char>(tolower(ch));
 450                                         szDo[szDolen] = '\0';
 451                                 }
 452                         }
 453                 }
 454
 455                 // End of Line found so process the information
 456                  if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == endPos)) {
 457
 458                         // **************************
 459                         // Folding logic for Keywords
 460                         // **************************
 461
 462                         // if a keyword is found on the current line and the line doesn't end with ;;+ (continuation)
 463                         //    and we are not inside a commentblock.
 464                         if (szKeywordlen > 0 &&
 465                                 (!(chPrev == '+' && chPrevPrev == ';' && chPrevPrevPrev ==';')) &&
 466                                 ((!(IsStreamCommentStyle(style)) || foldInComment)) ) {
 467
 468                                 // only fold "if" last keyword is "then"  (else its a one line if)
 469                                 if (strcmp(szKeyword,"if") == 0  && DoFoundLast) {
 470                                                 levelNext++;
 471                                 }
 472                                 // create new fold for these words
 473                                 if (strcmp(szKeyword,"for") == 0) {
 474                                         levelNext++;
 475                                 }
 476
 477                                 //handle folding for functions/labels
 478                                 //Note: Functions and labels don't have an explicit end like [end function]
 479                                 //      1. functions/labels end at the start of another function
 480                                 //      2. functions/labels end at the end of the file
 481                                 if ((strcmp(szKeyword,"function") == 0) || (szKeywordlen > 0 && szKeyword[0] == '@')) {
 482                                         if (isFoldingAll) { //if we're folding the whole document (recursivly by lua script)
 483
 484                                                 if (functionCount > 0) {
 485                                                         levelCurrent--;
 486                                                 } else {
 487                                                         levelNext++;
 488                                                 }
 489                                                 functionCount++;
 490
 491                                         } else { //if just folding a small piece (by clicking on the minus sign next to the word)
 492                                                 levelCurrent--;
 493                                         }
 494                                 }
 495
 496                                 // end the fold for these words before the current line
 497                                 if (strcmp(szKeyword,"endif") == 0 || strcmp(szKeyword,"endfor") == 0) {
 498                                                 levelNext--;
 499                                                 levelCurrent--;
 500                                 }
 501                                 // end the fold for these words before the current line and Start new fold
 502                                 if (strcmp(szKeyword,"else") == 0 || strcmp(szKeyword,"elseif") == 0 ) {
 503                                                 levelCurrent--;
 504                                 }
 505                         }
 506                         // Preprocessor and Comment folding
 507                         int styleNext = GetStyleFirstWord(lineCurrent + 1,styler);
 508
 509                         // *********************************
 510                         // Folding logic for Comment blocks
 511                         // *********************************
 512                         if (foldComment && IsStreamCommentStyle(style)) {
 513                                 // Start of a comment block
 514                                 if (!(stylePrev==style) && IsStreamCommentStyle(styleNext) && styleNext==style) {
 515                                     levelNext++;
 516                                 }
 517                                 // fold till the last line for normal comment lines
 518                                 else if (IsStreamCommentStyle(stylePrev)
 519                                                 && !(styleNext == SCE_POWERPRO_COMMENTLINE)
 520                                                 && stylePrev == SCE_POWERPRO_COMMENTLINE
 521                                                 && style == SCE_POWERPRO_COMMENTLINE) {
 522                                         levelNext--;
 523                                 }
 524                                 // fold till the one but last line for Blockcomment lines
 525                                 else if (IsStreamCommentStyle(stylePrev)
 526                                                 && !(styleNext == SCE_POWERPRO_COMMENTBLOCK)
 527                                                 && style == SCE_POWERPRO_COMMENTBLOCK) {
 528                                         levelNext--;
 529                                         levelCurrent--;
 530                                 }
 531                         }
 532
 533                         int levelUse = levelCurrent;
 534                         int lev = levelUse | levelNext << 16;
 535                         if (visibleChars == 0 && foldCompact)
 536                                 lev |= SC_FOLDLEVELWHITEFLAG;
 537                         if (levelUse < levelNext) {
 538                                 lev |= SC_FOLDLEVELHEADERFLAG;
 539                         }
 540                         if (lev != styler.LevelAt(lineCurrent)) {
 541                                 styler.SetLevel(lineCurrent, lev);
 542                         }
 543
 544                         // reset values for the next line
 545                         lineCurrent++;
 546                         stylePrev = style;
 547                         style = styleNext;
 548                         levelCurrent = levelNext;
 549                         visibleChars = 0;
 550
 551                         // if the last characters are ;;+ then don't reset since the line continues on the next line.
 552                         if (chPrev == '+' && chPrevPrev == ';' && chPrevPrevPrev == ';') {
 553                                 //do nothing
 554                         } else {
 555                                 szKeywordlen = 0;
 556                                 szDolen = 0;
 557                                 FirstWordStart = false;
 558                                 FirstWordEnd = false;
 559                                 DoFoundLast = false;
 560                                 //blank out keyword
 561                                 for (unsigned int i = 0; i < KEYWORD_MAX; i++) {
 562                                         szKeyword[i] = '\0';
 563                                 }
 564                         }
 565                 }
 566
 567                 // save the last processed characters
 568                 if ((ch > 0) && !isspacechar(ch)) {
 569                         chPrevPrevPrev = chPrevPrev;
 570                         chPrevPrev = chPrev;
 571                         chPrev = ch;
 572                         visibleChars++;
 573                 }
 574         }
 575
 576         //close folds on the last line - without this a 'phantom'
 577         //fold can appear when an open fold is on the last line
 578         //this can occur because functions and labels don't have an explicit end
 579         if (lineCurrent >= lastLine) {
 580                 int lev = 0;
 581                 lev |= SC_FOLDLEVELWHITEFLAG;
 582                 styler.SetLevel(lineCurrent, lev);
 583         }
 584
 585 }
 586
 587 static const char * const powerProWordLists[] = {
 588             "Keyword list 1",
 589             "Keyword list 2",
 590             "Keyword list 3",
 591             "Keyword list 4",
 592             0,
 593         };
 594
 595 static void ColourisePowerProDocWrapper(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
 596                                        Accessor &styler) {
 597         ColourisePowerProDoc(startPos, length, initStyle, keywordlists, styler, false);
 598 }
 599
 600 LexerModule lmPowerPro(SCLEX_POWERPRO, ColourisePowerProDocWrapper, "powerpro", FoldPowerProDoc, powerProWordLists);