1 // Scintilla source code edit control
2 /** @file LexFortran.cxx
3 ** Lexer for Fortran.
4 ** Written by Chuan-jian Shen, Last changed Sep. 2003
5 **/
6 // Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
7 // The License.txt file describes the conditions under which this software may be distributed.
8 /***************************************/
9 #include <stdlib.h>
10 #include <string.h>
11 #include <stdio.h>
12 #include <stdarg.h>
13 #include <assert.h>
14 #include <ctype.h>
15 /***************************************/
16 #include "ILexer.h"
17 #include "Scintilla.h"
18 #include "SciLexer.h"
19
20 #include "WordList.h"
21 #include "LexAccessor.h"
22 #include "Accessor.h"
23 #include "StyleContext.h"
24 #include "CharacterSet.h"
25 #include "LexerModule.h"
26 /***************************************/
27
28 using namespace Scintilla;
29
30 /***********************************************/
IsAWordChar(const int ch)31 static inline bool IsAWordChar(const int ch) {
32 return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '%');
33 }
34 /**********************************************/
IsAWordStart(const int ch)35 static inline bool IsAWordStart(const int ch) {
36 return (ch < 0x80) && (isalnum(ch));
37 }
38 /***************************************/
IsABlank(unsigned int ch)39 static inline bool IsABlank(unsigned int ch) {
40 return (ch == ' ') || (ch == 0x09) || (ch == 0x0b) ;
41 }
42 /***************************************/
IsALineEnd(char ch)43 static inline bool IsALineEnd(char ch) {
44 return ((ch == '\n') || (ch == '\r')) ;
45 }
46 /***************************************/
GetContinuedPos(Sci_PositionU pos,Accessor & styler)47 static Sci_PositionU GetContinuedPos(Sci_PositionU pos, Accessor &styler) {
48 while (!IsALineEnd(styler.SafeGetCharAt(pos++))) continue;
49 if (styler.SafeGetCharAt(pos) == '\n') pos++;
50 while (IsABlank(styler.SafeGetCharAt(pos++))) continue;
51 char chCur = styler.SafeGetCharAt(pos);
52 if (chCur == '&') {
53 while (IsABlank(styler.SafeGetCharAt(++pos))) continue;
54 return pos;
55 } else {
56 return pos;
57 }
58 }
59 /***************************************/
ColouriseFortranDoc(Sci_PositionU startPos,Sci_Position length,int initStyle,WordList * keywordlists[],Accessor & styler,bool isFixFormat)60 static void ColouriseFortranDoc(Sci_PositionU startPos, Sci_Position length, int initStyle,
61 WordList *keywordlists[], Accessor &styler, bool isFixFormat) {
62 WordList &keywords = *keywordlists[0];
63 WordList &keywords2 = *keywordlists[1];
64 WordList &keywords3 = *keywordlists[2];
65 /***************************************/
66 Sci_Position posLineStart = 0;
67 int numNonBlank = 0, prevState = 0;
68 Sci_Position endPos = startPos + length;
69 /***************************************/
70 // backtrack to the nearest keyword
71 while ((startPos > 1) && (styler.StyleAt(startPos) != SCE_F_WORD)) {
72 startPos--;
73 }
74 startPos = styler.LineStart(styler.GetLine(startPos));
75 initStyle = styler.StyleAt(startPos - 1);
76 StyleContext sc(startPos, endPos-startPos, initStyle, styler);
77 /***************************************/
78 for (; sc.More(); sc.Forward()) {
79 // remember the start position of the line
80 if (sc.atLineStart) {
81 posLineStart = sc.currentPos;
82 numNonBlank = 0;
83 sc.SetState(SCE_F_DEFAULT);
84 }
85 if (!IsASpaceOrTab(sc.ch)) numNonBlank ++;
86 /***********************************************/
87 // Handle the fix format generically
88 Sci_Position toLineStart = sc.currentPos - posLineStart;
89 if (isFixFormat && (toLineStart < 6 || toLineStart >= 72)) {
90 if ((toLineStart == 0 && (tolower(sc.ch) == 'c' || sc.ch == '*')) || sc.ch == '!') {
91 if (sc.MatchIgnoreCase("cdec$") || sc.MatchIgnoreCase("*dec$") || sc.MatchIgnoreCase("!dec$") ||
92 sc.MatchIgnoreCase("cdir$") || sc.MatchIgnoreCase("*dir$") || sc.MatchIgnoreCase("!dir$") ||
93 sc.MatchIgnoreCase("cms$") || sc.MatchIgnoreCase("*ms$") || sc.MatchIgnoreCase("!ms$") ||
94 sc.chNext == '$') {
95 sc.SetState(SCE_F_PREPROCESSOR);
96 } else {
97 sc.SetState(SCE_F_COMMENT);
98 }
99
100 while (!sc.atLineEnd && sc.More()) sc.Forward(); // Until line end
101 } else if (toLineStart >= 72) {
102 sc.SetState(SCE_F_COMMENT);
103 while (!sc.atLineEnd && sc.More()) sc.Forward(); // Until line end
104 } else if (toLineStart < 5) {
105 if (IsADigit(sc.ch))
106 sc.SetState(SCE_F_LABEL);
107 else
108 sc.SetState(SCE_F_DEFAULT);
109 } else if (toLineStart == 5) {
110 //if (!IsASpace(sc.ch) && sc.ch != '0') {
111 if (sc.ch != '\r' && sc.ch != '\n') {
112 sc.SetState(SCE_F_CONTINUATION);
113 if (!IsASpace(sc.ch) && sc.ch != '0')
114 sc.ForwardSetState(prevState);
115 } else
116 sc.SetState(SCE_F_DEFAULT);
117 }
118 continue;
119 }
120 /***************************************/
121 // Handle line continuation generically.
122 if (!isFixFormat && sc.ch == '&' && sc.state != SCE_F_COMMENT) {
123 char chTemp = ' ';
124 Sci_Position j = 1;
125 while (IsABlank(chTemp) && j<132) {
126 chTemp = static_cast<char>(sc.GetRelative(j));
127 j++;
128 }
129 if (chTemp == '!') {
130 sc.SetState(SCE_F_CONTINUATION);
131 if (sc.chNext == '!') sc.ForwardSetState(SCE_F_COMMENT);
132 } else if (chTemp == '\r' || chTemp == '\n') {
133 int currentState = sc.state;
134 sc.SetState(SCE_F_CONTINUATION);
135 sc.ForwardSetState(SCE_F_DEFAULT);
136 while (IsASpace(sc.ch) && sc.More()) {
137 sc.Forward();
138 if (sc.atLineStart) numNonBlank = 0;
139 if (!IsASpaceOrTab(sc.ch)) numNonBlank ++;
140 }
141 if (sc.ch == '&') {
142 sc.SetState(SCE_F_CONTINUATION);
143 sc.Forward();
144 }
145 sc.SetState(currentState);
146 }
147 }
148 /***************************************/
149 // Hanndle preprocessor directives
150 if (sc.ch == '#' && numNonBlank == 1)
151 {
152 sc.SetState(SCE_F_PREPROCESSOR);
153 while (!sc.atLineEnd && sc.More())
154 sc.Forward(); // Until line end
155 }
156 /***************************************/
157 // Determine if the current state should terminate.
158 if (sc.state == SCE_F_OPERATOR) {
159 sc.SetState(SCE_F_DEFAULT);
160 } else if (sc.state == SCE_F_NUMBER) {
161 if (!(IsAWordChar(sc.ch) || sc.ch=='\'' || sc.ch=='\"' || sc.ch=='.')) {
162 sc.SetState(SCE_F_DEFAULT);
163 }
164 } else if (sc.state == SCE_F_IDENTIFIER) {
165 if (!IsAWordChar(sc.ch) || (sc.ch == '%')) {
166 char s[100];
167 sc.GetCurrentLowered(s, sizeof(s));
168 if (keywords.InList(s)) {
169 sc.ChangeState(SCE_F_WORD);
170 } else if (keywords2.InList(s)) {
171 sc.ChangeState(SCE_F_WORD2);
172 } else if (keywords3.InList(s)) {
173 sc.ChangeState(SCE_F_WORD3);
174 }
175 sc.SetState(SCE_F_DEFAULT);
176 }
177 } else if (sc.state == SCE_F_COMMENT || sc.state == SCE_F_PREPROCESSOR) {
178 if (sc.ch == '\r' || sc.ch == '\n') {
179 sc.SetState(SCE_F_DEFAULT);
180 }
181 } else if (sc.state == SCE_F_STRING1) {
182 prevState = sc.state;
183 if (sc.ch == '\'') {
184 if (sc.chNext == '\'') {
185 sc.Forward();
186 } else {
187 sc.ForwardSetState(SCE_F_DEFAULT);
188 prevState = SCE_F_DEFAULT;
189 }
190 } else if (sc.atLineEnd) {
191 sc.ChangeState(SCE_F_STRINGEOL);
192 sc.ForwardSetState(SCE_F_DEFAULT);
193 }
194 } else if (sc.state == SCE_F_STRING2) {
195 prevState = sc.state;
196 if (sc.atLineEnd) {
197 sc.ChangeState(SCE_F_STRINGEOL);
198 sc.ForwardSetState(SCE_F_DEFAULT);
199 } else if (sc.ch == '\"') {
200 if (sc.chNext == '\"') {
201 sc.Forward();
202 } else {
203 sc.ForwardSetState(SCE_F_DEFAULT);
204 prevState = SCE_F_DEFAULT;
205 }
206 }
207 } else if (sc.state == SCE_F_OPERATOR2) {
208 if (sc.ch == '.') {
209 sc.ForwardSetState(SCE_F_DEFAULT);
210 }
211 } else if (sc.state == SCE_F_CONTINUATION) {
212 sc.SetState(SCE_F_DEFAULT);
213 } else if (sc.state == SCE_F_LABEL) {
214 if (!IsADigit(sc.ch)) {
215 sc.SetState(SCE_F_DEFAULT);
216 } else {
217 if (isFixFormat && sc.currentPos-posLineStart > 4)
218 sc.SetState(SCE_F_DEFAULT);
219 else if (numNonBlank > 5)
220 sc.SetState(SCE_F_DEFAULT);
221 }
222 }
223 /***************************************/
224 // Determine if a new state should be entered.
225 if (sc.state == SCE_F_DEFAULT) {
226 if (sc.ch == '!') {
227 if (sc.MatchIgnoreCase("!dec$") || sc.MatchIgnoreCase("!dir$") ||
228 sc.MatchIgnoreCase("!ms$") || sc.chNext == '$') {
229 sc.SetState(SCE_F_PREPROCESSOR);
230 } else {
231 sc.SetState(SCE_F_COMMENT);
232 }
233 } else if ((!isFixFormat) && IsADigit(sc.ch) && numNonBlank == 1) {
234 sc.SetState(SCE_F_LABEL);
235 } else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
236 sc.SetState(SCE_F_NUMBER);
237 } else if ((tolower(sc.ch) == 'b' || tolower(sc.ch) == 'o' ||
238 tolower(sc.ch) == 'z') && (sc.chNext == '\"' || sc.chNext == '\'')) {
239 sc.SetState(SCE_F_NUMBER);
240 sc.Forward();
241 } else if (sc.ch == '.' && isalpha(sc.chNext)) {
242 sc.SetState(SCE_F_OPERATOR2);
243 } else if (IsAWordStart(sc.ch)) {
244 sc.SetState(SCE_F_IDENTIFIER);
245 } else if (sc.ch == '\"') {
246 sc.SetState(SCE_F_STRING2);
247 } else if (sc.ch == '\'') {
248 sc.SetState(SCE_F_STRING1);
249 } else if (isoperator(static_cast<char>(sc.ch))) {
250 sc.SetState(SCE_F_OPERATOR);
251 }
252 }
253 }
254 sc.Complete();
255 }
256 /***************************************/
CheckLevelCommentLine(const unsigned int nComL,Sci_Position nComColB[],Sci_Position nComColF[],Sci_Position & nComCur,bool comLineB[],bool comLineF[],bool & comLineCur,int & levelDeltaNext)257 static void CheckLevelCommentLine(const unsigned int nComL,
258 Sci_Position nComColB[], Sci_Position nComColF[], Sci_Position &nComCur,
259 bool comLineB[], bool comLineF[], bool &comLineCur,
260 int &levelDeltaNext) {
261 levelDeltaNext = 0;
262 if (!comLineCur) {
263 return;
264 }
265
266 if (!comLineF[0] || nComColF[0] != nComCur) {
267 unsigned int i=0;
268 for (; i<nComL; i++) {
269 if (!comLineB[i] || nComColB[i] != nComCur) {
270 break;
271 }
272 }
273 if (i == nComL) {
274 levelDeltaNext = -1;
275 }
276 }
277 else if (!comLineB[0] || nComColB[0] != nComCur) {
278 unsigned int i=0;
279 for (; i<nComL; i++) {
280 if (!comLineF[i] || nComColF[i] != nComCur) {
281 break;
282 }
283 }
284 if (i == nComL) {
285 levelDeltaNext = 1;
286 }
287 }
288 }
289 /***************************************/
GetIfLineComment(Accessor & styler,bool isFixFormat,const Sci_Position line,bool & isComLine,Sci_Position & comCol)290 static void GetIfLineComment(Accessor &styler, bool isFixFormat, const Sci_Position line, bool &isComLine, Sci_Position &comCol) {
291 Sci_Position col = 0;
292 isComLine = false;
293 Sci_Position pos = styler.LineStart(line);
294 Sci_Position len = styler.Length();
295 while(pos<len) {
296 char ch = styler.SafeGetCharAt(pos);
297 if (ch == '!' || (isFixFormat && col == 0 && (tolower(ch) == 'c' || ch == '*'))) {
298 isComLine = true;
299 comCol = col;
300 break;
301 }
302 else if (!IsABlank(ch) || IsALineEnd(ch)) {
303 break;
304 }
305 pos++;
306 col++;
307 }
308 }
309 /***************************************/
StepCommentLine(Accessor & styler,bool isFixFormat,Sci_Position lineCurrent,const unsigned int nComL,Sci_Position nComColB[],Sci_Position nComColF[],Sci_Position & nComCur,bool comLineB[],bool comLineF[],bool & comLineCur)310 static void StepCommentLine(Accessor &styler, bool isFixFormat, Sci_Position lineCurrent, const unsigned int nComL,
311 Sci_Position nComColB[], Sci_Position nComColF[], Sci_Position &nComCur,
312 bool comLineB[], bool comLineF[], bool &comLineCur) {
313 Sci_Position nLineTotal = styler.GetLine(styler.Length()-1) + 1;
314 if (lineCurrent >= nLineTotal) {
315 return;
316 }
317
318 for (int i=nComL-2; i>=0; i--) {
319 nComColB[i+1] = nComColB[i];
320 comLineB[i+1] = comLineB[i];
321 }
322 nComColB[0] = nComCur;
323 comLineB[0] = comLineCur;
324 nComCur = nComColF[0];
325 comLineCur = comLineF[0];
326 for (unsigned int i=0; i+1<nComL; i++) {
327 nComColF[i] = nComColF[i+1];
328 comLineF[i] = comLineF[i+1];
329 }
330 Sci_Position chL = lineCurrent + nComL;
331 if (chL < nLineTotal) {
332 GetIfLineComment(styler, isFixFormat, chL, comLineF[nComL-1], nComColF[nComL-1]);
333 }
334 else {
335 comLineF[nComL-1] = false;
336 }
337 }
338 /***************************************/
CheckBackComLines(Accessor & styler,bool isFixFormat,Sci_Position lineCurrent,const unsigned int nComL,Sci_Position nComColB[],Sci_Position nComColF[],Sci_Position nComCur,bool comLineB[],bool comLineF[],bool & comLineCur)339 static void CheckBackComLines(Accessor &styler, bool isFixFormat, Sci_Position lineCurrent, const unsigned int nComL,
340 Sci_Position nComColB[], Sci_Position nComColF[], Sci_Position nComCur,
341 bool comLineB[], bool comLineF[], bool &comLineCur) {
342 unsigned int nLines = nComL + nComL + 1;
343 bool* comL = new bool[nLines];
344 Sci_Position* nComCol = new Sci_Position[nLines];
345 bool comL0;
346 Sci_Position nComCol0;
347 GetIfLineComment(styler, isFixFormat, lineCurrent-nComL-1, comL0, nComCol0);
348 for (unsigned int i=0; i<nComL; i++) {
349 unsigned copyTo = nComL - i - 1;
350 comL[copyTo] = comLineB[i];
351 nComCol[copyTo] = nComColB[i];
352 }
353 assert(nComL < nLines);
354 comL[nComL] = comLineCur;
355 nComCol[nComL] = nComCur;
356 for (unsigned int i=0; i<nComL; i++) {
357 unsigned copyTo = i + nComL + 1;
358 comL[copyTo] = comLineF[i];
359 nComCol[copyTo] = nComColF[i];
360 }
361
362 Sci_Position lineC = lineCurrent - nComL + 1;
363 Sci_PositionU iStart;
364 if (lineC <= 0) {
365 lineC = 0;
366 iStart = nComL - lineCurrent;
367 }
368 else {
369 iStart = 1;
370 }
371 bool levChanged = false;
372 int lev = styler.LevelAt(lineC) & SC_FOLDLEVELNUMBERMASK;
373
374 for (Sci_PositionU i=iStart; i<=nComL; i++) {
375 if (comL[i] && (!comL[i-1] || nComCol[i] != nComCol[i-1])) {
376 bool increase = true;
377 Sci_PositionU until = i + nComL;
378 for (Sci_PositionU j=i+1; j<=until; j++) {
379 if (!comL[j] || nComCol[j] != nComCol[i]) {
380 increase = false;
381 break;
382 }
383 }
384 lev = styler.LevelAt(lineC) & SC_FOLDLEVELNUMBERMASK;
385 if (increase) {
386 int levH = lev | SC_FOLDLEVELHEADERFLAG;
387 lev += 1;
388 if (levH != styler.LevelAt(lineC)) {
389 styler.SetLevel(lineC, levH);
390 }
391 for (Sci_Position j=lineC+1; j<=lineCurrent; j++) {
392 if (lev != styler.LevelAt(j)) {
393 styler.SetLevel(j, lev);
394 }
395 }
396 break;
397 }
398 else {
399 if (lev != styler.LevelAt(lineC)) {
400 styler.SetLevel(lineC, lev);
401 }
402 }
403 levChanged = true;
404 }
405 else if (levChanged && comL[i]) {
406 if (lev != styler.LevelAt(lineC)) {
407 styler.SetLevel(lineC, lev);
408 }
409 }
410 lineC++;
411 }
412 delete[] comL;
413 delete[] nComCol;
414 }
415 /***************************************/
416 // To determine the folding level depending on keywords
classifyFoldPointFortran(const char * s,const char * prevWord,const char chNextNonBlank)417 static int classifyFoldPointFortran(const char* s, const char* prevWord, const char chNextNonBlank) {
418 int lev = 0;
419
420 if ((strcmp(prevWord, "module") == 0 && strcmp(s, "subroutine") == 0)
421 || (strcmp(prevWord, "module") == 0 && strcmp(s, "function") == 0)) {
422 lev = 0;
423 } else if (strcmp(s, "associate") == 0 || strcmp(s, "block") == 0
424 || strcmp(s, "blockdata") == 0 || strcmp(s, "select") == 0
425 || strcmp(s, "selecttype") == 0 || strcmp(s, "selectcase") == 0
426 || strcmp(s, "do") == 0 || strcmp(s, "enum") ==0
427 || strcmp(s, "function") == 0 || strcmp(s, "interface") == 0
428 || strcmp(s, "module") == 0 || strcmp(s, "program") == 0
429 || strcmp(s, "subroutine") == 0 || strcmp(s, "then") == 0
430 || (strcmp(s, "type") == 0 && chNextNonBlank != '(')
431 || strcmp(s, "critical") == 0 || strcmp(s, "submodule") == 0){
432 if (strcmp(prevWord, "end") == 0)
433 lev = 0;
434 else
435 lev = 1;
436 } else if ((strcmp(s, "end") == 0 && chNextNonBlank != '=')
437 || strcmp(s, "endassociate") == 0 || strcmp(s, "endblock") == 0
438 || strcmp(s, "endblockdata") == 0 || strcmp(s, "endselect") == 0
439 || strcmp(s, "enddo") == 0 || strcmp(s, "endenum") ==0
440 || strcmp(s, "endif") == 0 || strcmp(s, "endforall") == 0
441 || strcmp(s, "endfunction") == 0 || strcmp(s, "endinterface") == 0
442 || strcmp(s, "endmodule") == 0 || strcmp(s, "endprogram") == 0
443 || strcmp(s, "endsubroutine") == 0 || strcmp(s, "endtype") == 0
444 || strcmp(s, "endwhere") == 0 || strcmp(s, "endcritical") == 0
445 || (strcmp(prevWord, "module") == 0 && strcmp(s, "procedure") == 0) // Take care of the "module procedure" statement
446 || strcmp(s, "endsubmodule") == 0 || strcmp(s, "endteam") == 0) {
447 lev = -1;
448 } else if (strcmp(prevWord, "end") == 0 && strcmp(s, "if") == 0){ // end if
449 lev = 0;
450 } else if (strcmp(prevWord, "type") == 0 && strcmp(s, "is") == 0){ // type is
451 lev = -1;
452 } else if ((strcmp(prevWord, "end") == 0 && strcmp(s, "procedure") == 0)
453 || strcmp(s, "endprocedure") == 0) {
454 lev = 1; // level back to 0, because no folding support for "module procedure" in submodule
455 } else if (strcmp(prevWord, "change") == 0 && strcmp(s, "team") == 0){ // change team
456 lev = 1;
457 }
458 return lev;
459 }
460 /***************************************/
461 // Folding the code
FoldFortranDoc(Sci_PositionU startPos,Sci_Position length,int initStyle,Accessor & styler,bool isFixFormat)462 static void FoldFortranDoc(Sci_PositionU startPos, Sci_Position length, int initStyle,
463 Accessor &styler, bool isFixFormat) {
464
465 bool foldComment = styler.GetPropertyInt("fold.comment", 1) != 0;
466 bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
467 Sci_PositionU endPos = startPos + length;
468 int visibleChars = 0;
469 Sci_Position lineCurrent = styler.GetLine(startPos);
470 bool isPrevLine;
471 if (lineCurrent > 0) {
472 lineCurrent--;
473 startPos = styler.LineStart(lineCurrent);
474 isPrevLine = true;
475 } else {
476 isPrevLine = false;
477 }
478 char chNext = styler[startPos];
479 int styleNext = styler.StyleAt(startPos);
480 int style = initStyle;
481 int levelDeltaNext = 0;
482
483 const unsigned int nComL = 3; // defines how many comment lines should be before they are folded
484 Sci_Position nComColB[nComL] = {};
485 Sci_Position nComColF[nComL] = {};
486 Sci_Position nComCur = 0;
487 bool comLineB[nComL] = {};
488 bool comLineF[nComL] = {};
489 bool comLineCur;
490 Sci_Position nLineTotal = styler.GetLine(styler.Length()-1) + 1;
491 if (foldComment) {
492 for (unsigned int i=0; i<nComL; i++) {
493 Sci_Position chL = lineCurrent-(i+1);
494 if (chL < 0) {
495 comLineB[i] = false;
496 break;
497 }
498 GetIfLineComment(styler, isFixFormat, chL, comLineB[i], nComColB[i]);
499 if (!comLineB[i]) {
500 for (unsigned int j=i+1; j<nComL; j++) {
501 comLineB[j] = false;
502 }
503 break;
504 }
505 }
506 for (unsigned int i=0; i<nComL; i++) {
507 Sci_Position chL = lineCurrent+i+1;
508 if (chL >= nLineTotal) {
509 comLineF[i] = false;
510 break;
511 }
512 GetIfLineComment(styler, isFixFormat, chL, comLineF[i], nComColF[i]);
513 }
514 GetIfLineComment(styler, isFixFormat, lineCurrent, comLineCur, nComCur);
515 CheckBackComLines(styler, isFixFormat, lineCurrent, nComL, nComColB, nComColF, nComCur,
516 comLineB, comLineF, comLineCur);
517 }
518 int levelCurrent = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
519
520 /***************************************/
521 Sci_Position lastStart = 0;
522 char prevWord[32] = "";
523 /***************************************/
524 for (Sci_PositionU i = startPos; i < endPos; i++) {
525 char ch = chNext;
526 chNext = styler.SafeGetCharAt(i + 1);
527 char chNextNonBlank = chNext;
528 bool nextEOL = false;
529 if (IsALineEnd(chNextNonBlank)) {
530 nextEOL = true;
531 }
532 Sci_PositionU j=i+1;
533 while(IsABlank(chNextNonBlank) && j<endPos) {
534 j ++ ;
535 chNextNonBlank = styler.SafeGetCharAt(j);
536 if (IsALineEnd(chNextNonBlank)) {
537 nextEOL = true;
538 }
539 }
540 if (!nextEOL && j == endPos) {
541 nextEOL = true;
542 }
543 int stylePrev = style;
544 style = styleNext;
545 styleNext = styler.StyleAt(i + 1);
546 bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
547 //
548 if (((isFixFormat && stylePrev == SCE_F_CONTINUATION) || stylePrev == SCE_F_DEFAULT
549 || stylePrev == SCE_F_OPERATOR) && (style == SCE_F_WORD || style == SCE_F_LABEL)) {
550 // Store last word and label start point.
551 lastStart = i;
552 }
553 /***************************************/
554 if (style == SCE_F_WORD) {
555 if(iswordchar(ch) && !iswordchar(chNext)) {
556 char s[32];
557 Sci_PositionU k;
558 for(k=0; (k<31 ) && (k<i-lastStart+1 ); k++) {
559 s[k] = static_cast<char>(tolower(styler[lastStart+k]));
560 }
561 s[k] = '\0';
562 // Handle the forall and where statement and structure.
563 if (strcmp(s, "forall") == 0 || (strcmp(s, "where") == 0 && strcmp(prevWord, "else") != 0)) {
564 if (strcmp(prevWord, "end") != 0) {
565 j = i + 1;
566 char chBrace = '(', chSeek = ')', ch1 = styler.SafeGetCharAt(j);
567 // Find the position of the first (
568 while (ch1 != chBrace && j<endPos) {
569 j++;
570 ch1 = styler.SafeGetCharAt(j);
571 }
572 char styBrace = styler.StyleAt(j);
573 int depth = 1;
574 char chAtPos;
575 char styAtPos;
576 while (j<endPos) {
577 j++;
578 chAtPos = styler.SafeGetCharAt(j);
579 styAtPos = styler.StyleAt(j);
580 if (styAtPos == styBrace) {
581 if (chAtPos == chBrace) depth++;
582 if (chAtPos == chSeek) depth--;
583 if (depth == 0) break;
584 }
585 }
586 Sci_Position tmpLineCurrent = lineCurrent;
587 while (j<endPos) {
588 j++;
589 chAtPos = styler.SafeGetCharAt(j);
590 styAtPos = styler.StyleAt(j);
591 if (!IsALineEnd(chAtPos) && (styAtPos == SCE_F_COMMENT || IsABlank(chAtPos))) continue;
592 if (isFixFormat) {
593 if (!IsALineEnd(chAtPos)) {
594 break;
595 } else {
596 if (tmpLineCurrent < styler.GetLine(styler.Length()-1)) {
597 tmpLineCurrent++;
598 j = styler.LineStart(tmpLineCurrent);
599 if (styler.StyleAt(j+5) == SCE_F_CONTINUATION
600 && !IsABlank(styler.SafeGetCharAt(j+5)) && styler.SafeGetCharAt(j+5) != '0') {
601 j += 5;
602 continue;
603 } else {
604 levelDeltaNext++;
605 break;
606 }
607 }
608 }
609 } else {
610 if (chAtPos == '&' && styler.StyleAt(j) == SCE_F_CONTINUATION) {
611 j = GetContinuedPos(j+1, styler);
612 continue;
613 } else if (IsALineEnd(chAtPos)) {
614 levelDeltaNext++;
615 break;
616 } else {
617 break;
618 }
619 }
620 }
621 }
622 } else {
623 int wordLevelDelta = classifyFoldPointFortran(s, prevWord, chNextNonBlank);
624 levelDeltaNext += wordLevelDelta;
625 if (((strcmp(s, "else") == 0) && (nextEOL || chNextNonBlank == '!')) ||
626 (strcmp(prevWord, "else") == 0 && strcmp(s, "where") == 0) || strcmp(s, "elsewhere") == 0) {
627 if (!isPrevLine) {
628 levelCurrent--;
629 }
630 levelDeltaNext++;
631 } else if ((strcmp(prevWord, "else") == 0 && strcmp(s, "if") == 0) || strcmp(s, "elseif") == 0) {
632 if (!isPrevLine) {
633 levelCurrent--;
634 }
635 } else if ((strcmp(prevWord, "select") == 0 && strcmp(s, "case") == 0) || strcmp(s, "selectcase") == 0 ||
636 (strcmp(prevWord, "select") == 0 && strcmp(s, "type") == 0) || strcmp(s, "selecttype") == 0) {
637 levelDeltaNext += 2;
638 } else if ((strcmp(s, "case") == 0 && chNextNonBlank == '(') || (strcmp(prevWord, "case") == 0 && strcmp(s, "default") == 0) ||
639 (strcmp(prevWord, "type") == 0 && strcmp(s, "is") == 0) ||
640 (strcmp(prevWord, "class") == 0 && strcmp(s, "is") == 0) ||
641 (strcmp(prevWord, "class") == 0 && strcmp(s, "default") == 0) ) {
642 if (!isPrevLine) {
643 levelCurrent--;
644 }
645 levelDeltaNext++;
646 } else if ((strcmp(prevWord, "end") == 0 && strcmp(s, "select") == 0) || strcmp(s, "endselect") == 0) {
647 levelDeltaNext -= 2;
648 }
649
650 // There are multiple forms of "do" loop. The older form with a label "do 100 i=1,10" would require matching
651 // labels to ensure the folding level does not decrease too far when labels are used for other purposes.
652 // Since this is difficult, do-label constructs are not folded.
653 if (strcmp(s, "do") == 0 && IsADigit(chNextNonBlank)) {
654 // Remove delta for do-label
655 levelDeltaNext -= wordLevelDelta;
656 }
657 }
658 strcpy(prevWord, s);
659 }
660 }
661 if (atEOL) {
662 if (foldComment) {
663 int ldNext;
664 CheckLevelCommentLine(nComL, nComColB, nComColF, nComCur, comLineB, comLineF, comLineCur, ldNext);
665 levelDeltaNext += ldNext;
666 }
667 int lev = levelCurrent;
668 if (visibleChars == 0 && foldCompact)
669 lev |= SC_FOLDLEVELWHITEFLAG;
670 if ((levelDeltaNext > 0) && (visibleChars > 0))
671 lev |= SC_FOLDLEVELHEADERFLAG;
672 if (lev != styler.LevelAt(lineCurrent))
673 styler.SetLevel(lineCurrent, lev);
674
675 lineCurrent++;
676 levelCurrent += levelDeltaNext;
677 levelDeltaNext = 0;
678 visibleChars = 0;
679 strcpy(prevWord, "");
680 isPrevLine = false;
681
682 if (foldComment) {
683 StepCommentLine(styler, isFixFormat, lineCurrent, nComL, nComColB, nComColF, nComCur,
684 comLineB, comLineF, comLineCur);
685 }
686 }
687 /***************************************/
688 if (!isspacechar(ch)) visibleChars++;
689 }
690 /***************************************/
691 }
692 /***************************************/
693 static const char * const FortranWordLists[] = {
694 "Primary keywords and identifiers",
695 "Intrinsic functions",
696 "Extended and user defined functions",
697 0,
698 };
699 /***************************************/
ColouriseFortranDocFreeFormat(Sci_PositionU startPos,Sci_Position length,int initStyle,WordList * keywordlists[],Accessor & styler)700 static void ColouriseFortranDocFreeFormat(Sci_PositionU startPos, Sci_Position length, int initStyle, WordList *keywordlists[],
701 Accessor &styler) {
702 ColouriseFortranDoc(startPos, length, initStyle, keywordlists, styler, false);
703 }
704 /***************************************/
ColouriseFortranDocFixFormat(Sci_PositionU startPos,Sci_Position length,int initStyle,WordList * keywordlists[],Accessor & styler)705 static void ColouriseFortranDocFixFormat(Sci_PositionU startPos, Sci_Position length, int initStyle, WordList *keywordlists[],
706 Accessor &styler) {
707 ColouriseFortranDoc(startPos, length, initStyle, keywordlists, styler, true);
708 }
709 /***************************************/
FoldFortranDocFreeFormat(Sci_PositionU startPos,Sci_Position length,int initStyle,WordList * [],Accessor & styler)710 static void FoldFortranDocFreeFormat(Sci_PositionU startPos, Sci_Position length, int initStyle,
711 WordList *[], Accessor &styler) {
712 FoldFortranDoc(startPos, length, initStyle,styler, false);
713 }
714 /***************************************/
FoldFortranDocFixFormat(Sci_PositionU startPos,Sci_Position length,int initStyle,WordList * [],Accessor & styler)715 static void FoldFortranDocFixFormat(Sci_PositionU startPos, Sci_Position length, int initStyle,
716 WordList *[], Accessor &styler) {
717 FoldFortranDoc(startPos, length, initStyle,styler, true);
718 }
719 /***************************************/
720 LexerModule lmFortran(SCLEX_FORTRAN, ColouriseFortranDocFreeFormat, "fortran", FoldFortranDocFreeFormat, FortranWordLists);
721 LexerModule lmF77(SCLEX_F77, ColouriseFortranDocFixFormat, "f77", FoldFortranDocFixFormat, FortranWordLists);
722