summaryrefslogtreecommitdiffstats
path: root/src/clangparser.cpp
blob: 9913b123b29538ba93fa47ce69fef1b7d62ba857 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
#include "clangparser.h"
#include "settings.h"
#include <stdio.h>

#if USE_LIBCLANG
#include <clang-c/Index.h>
#include <qfileinfo.h>
#include <stdlib.h>
#include "message.h"
#include "sortdict.h"
#include "outputgen.h"
#include "filedef.h"
#include "memberdef.h"
#include "doxygen.h"
#include "util.h"
#include "config.h"
#include "growbuf.h"
#include "membername.h"
#include "filename.h"
#include "tooltip.h"

static Definition *g_currentDefinition=0;
static MemberDef  *g_currentMemberDef=0;
static uint        g_currentLine=0;
static bool        g_searchForBody=FALSE;
static bool        g_insideBody=FALSE;
static uint        g_bracketCount=0;
#endif

ClangParser *ClangParser::instance()
{
  if (!s_instance) s_instance = new ClangParser;
  return s_instance;
}

ClangParser *ClangParser::s_instance = 0;

//--------------------------------------------------------------------------
#if USE_LIBCLANG

class ClangParser::Private
{
  public:
    enum DetectedLang { Detected_Cpp, Detected_ObjC, Detected_ObjCpp };
    Private() : tu(0), tokens(0), numTokens(0), cursors(0), 
                ufs(0), sources(0), numFiles(0), fileMapping(257),
                detectedLang(Detected_Cpp)
    { fileMapping.setAutoDelete(TRUE); }
    int getCurrentTokenLine();
    CXIndex index;
    CXTranslationUnit tu;
    QCString fileName;
    CXToken *tokens;
    uint numTokens;
    CXCursor *cursors;
    uint curLine;
    uint curToken;
    CXUnsavedFile *ufs;
    QCString *sources;
    uint numFiles;
    QDict<uint> fileMapping;
    DetectedLang detectedLang;
};

static QCString detab(const QCString &s)
{
  static int tabSize = Config_getInt("TAB_SIZE");
  GrowBuf out;
  int size = s.length();
  const char *data = s.data();
  int i=0;
  int col=0;
  const int maxIndent=1000000; // value representing infinity
  int minIndent=maxIndent;
  while (i<size)
  {
    char c = data[i++];
    switch(c)
    {
      case '\t': // expand tab
        {
          int stop = tabSize - (col%tabSize);
          //printf("expand at %d stop=%d\n",col,stop);
          col+=stop;
          while (stop--) out.addChar(' '); 
        }
        break;
      case '\n': // reset colomn counter
        out.addChar(c);
        col=0;
        break;
      case ' ': // increment column counter
        out.addChar(c);
        col++;
        break;
      default: // non-whitespace => update minIndent
        out.addChar(c);
        if (c<0 && i<size) // multibyte sequence
        {
          out.addChar(data[i++]); // >= 2 bytes
          if (((uchar)c&0xE0)==0xE0 && i<size)
          {
            out.addChar(data[i++]); // 3 bytes
          }
          if (((uchar)c&0xF0)==0xF0 && i<size)
          {
            out.addChar(data[i++]); // 4 byres
          }
        }
        if (col<minIndent) minIndent=col;
        col++;
    }
  }
  out.addChar(0);
  //printf("detab refIndent=%d\n",refIndent);
  return out.get();
}

/** Callback function called for each include in a translation unit */
static void inclusionVisitor(CXFile includedFile,
                             CXSourceLocation* /*inclusionStack*/,
                             unsigned /*includeLen*/,
                             CXClientData clientData)
{
  QDict<void> *fileDict = (QDict<void> *)clientData;
  CXString incFileName = clang_getFileName(includedFile);
  //printf("--- file %s includes %s\n",fileName,clang_getCString(incFileName));
  fileDict->insert(clang_getCString(incFileName),(void*)0x8);
  clang_disposeString(incFileName);
}

/** filter the \a files and only keep those that are found as include files
 *  within the current translation unit.
 *  @param[in,out] files The list of files to filter.
 */ 
void ClangParser::determineInputFilesInSameTu(QStrList &files)
{
  // put the files in this translation unit in a dictionary
  QDict<void> incFound(257);
  clang_getInclusions(p->tu,
      inclusionVisitor,
      (CXClientData)&incFound
      );
  // create a new filtered file list
  QStrList resultIncludes;
  QStrListIterator it2(files);
  for (it2.toFirst();it2.current();++it2)
  {
    if (incFound.find(it2.current()))
    {
      resultIncludes.append(it2.current());
    }
  }
  // replace the original list
  files=resultIncludes;
}

void ClangParser::start(const char *fileName,QStrList &filesInTranslationUnit)
{
  static bool clangAssistedParsing = Config_getBool("CLANG_ASSISTED_PARSING");
  static QStrList &includePath = Config_getList("INCLUDE_PATH");
  static QStrList clangOptions = Config_getList("CLANG_OPTIONS");
  if (!clangAssistedParsing) return;
  //printf("ClangParser::start(%s)\n",fileName);
  p->fileName = fileName;
  p->index    = clang_createIndex(0, 0);
  p->curLine  = 1;
  p->curToken = 0;
  char **argv = (char**)malloc(sizeof(char*)*(4+Doxygen::inputPaths.count()+includePath.count()+clangOptions.count()));
  QDictIterator<void> di(Doxygen::inputPaths);
  int argc=0;
  // add include paths for input files
  for (di.toFirst();di.current();++di,++argc)
  {
    QCString inc = QCString("-I")+di.currentKey();
    argv[argc]=strdup(inc.data());
    //printf("argv[%d]=%s\n",argc,argv[argc]);
  }
  // add external include paths
  for (uint i=0;i<includePath.count();i++)
  {
    QCString inc = QCString("-I")+includePath.at(i);
    argv[argc++]=strdup(inc.data());
  }
  // user specified options
  for (uint i=0;i<clangOptions.count();i++)
  {
    argv[argc++]=strdup(clangOptions.at(i));
  }
  // extra options
  argv[argc++]=strdup("-ferror-limit=0");
  argv[argc++]=strdup("-x");

  // Since we can be presented with a .h file that can contain C/C++ or
  // Objective C code and we need to configure the parser before knowing this,
  // we use the source file to detected the language. Detection will fail if you
  // pass a bunch of .h files containing ObjC code, and no sources :-(
  SrcLangExt lang = getLanguageFromFileName(fileName);
  if (lang==SrcLangExt_ObjC || p->detectedLang!=ClangParser::Private::Detected_Cpp)
  {
    QCString fn = fileName;
    if (p->detectedLang==ClangParser::Private::Detected_Cpp && 
        (fn.right(4).lower()==".cpp" || fn.right(4).lower()==".cxx" ||
         fn.right(3).lower()==".cc" || fn.right(2).lower()==".c"))
    { // fall back to C/C++ once we see an extension that indicates this
      p->detectedLang = ClangParser::Private::Detected_Cpp;
    }
    else if (fn.right(3).lower()==".mm") // switch to Objective C++
    {
      p->detectedLang = ClangParser::Private::Detected_ObjCpp;
    }
    else if (fn.right(2).lower()==".m") // switch to Objective C
    {
      p->detectedLang = ClangParser::Private::Detected_ObjC;
    }
  }
  switch(p->detectedLang)
  {
    case ClangParser::Private::Detected_Cpp: 
      argv[argc++]=strdup("c++"); 
      break;
    case ClangParser::Private::Detected_ObjC: 
      argv[argc++]=strdup("objective-c"); 
      break;
    case ClangParser::Private::Detected_ObjCpp: 
      argv[argc++]=strdup("objective-c++"); 
      break;
  }

  // provide the input and and its dependencies as unsaved files so we can
  // pass the filtered versions
  argv[argc++]=strdup(fileName);
  static bool filterSourceFiles = Config_getBool("FILTER_SOURCE_FILES");
  //printf("source %s ----------\n%s\n-------------\n\n",
  //    fileName,p->source.data());
  uint numUnsavedFiles = filesInTranslationUnit.count()+1;
  p->numFiles = numUnsavedFiles;
  p->sources = new QCString[numUnsavedFiles];
  p->ufs     = new CXUnsavedFile[numUnsavedFiles];
  p->sources[0]      = detab(fileToString(fileName,filterSourceFiles,TRUE));
  p->ufs[0].Filename = strdup(fileName);
  p->ufs[0].Contents = p->sources[0].data();
  p->ufs[0].Length   = p->sources[0].length();
  QStrListIterator it(filesInTranslationUnit);
  uint i=1;
  for (it.toFirst();it.current() && i<numUnsavedFiles;++it,i++)
  {
    p->fileMapping.insert(it.current(),new uint(i));
    p->sources[i]      = detab(fileToString(it.current(),filterSourceFiles,TRUE));
    p->ufs[i].Filename = strdup(it.current());
    p->ufs[i].Contents = p->sources[i].data();
    p->ufs[i].Length   = p->sources[i].length();
  }

  // let libclang do the actual parsing
  p->tu = clang_parseTranslationUnit(p->index, 0,
                                     argv, argc, p->ufs, numUnsavedFiles, 
                                     CXTranslationUnit_DetailedPreprocessingRecord);
  // free arguments
  for (int i=0;i<argc;++i)
  {
    free(argv[i]);
  }
  free(argv);

  if (p->tu)
  {
    // filter out any includes not found by the clang parser
    determineInputFilesInSameTu(filesInTranslationUnit);

    // show any warnings that the compiler produced
    for (uint i=0, n=clang_getNumDiagnostics(p->tu); i!=n; ++i) 
    {
      CXDiagnostic diag = clang_getDiagnostic(p->tu, i); 
      CXString string = clang_formatDiagnostic(diag,
          clang_defaultDiagnosticDisplayOptions()); 
      err("%s [clang]\n",clang_getCString(string));
      clang_disposeString(string);
      clang_disposeDiagnostic(diag);
    }

    // create a source range for the given file
    QFileInfo fi(fileName);
    CXFile f = clang_getFile(p->tu, fileName);
    CXSourceLocation fileBegin = clang_getLocationForOffset(p->tu, f, 0);
    CXSourceLocation fileEnd   = clang_getLocationForOffset(p->tu, f, p->ufs[0].Length);
    CXSourceRange    fileRange = clang_getRange(fileBegin, fileEnd);

    // produce a token stream for the file
    clang_tokenize(p->tu,fileRange,&p->tokens,&p->numTokens);

    // produce cursors for each token in the stream
    p->cursors=new CXCursor[p->numTokens];
    clang_annotateTokens(p->tu,p->tokens,p->numTokens,p->cursors);
  }
  else
  {
    p->tokens    = 0;
    p->numTokens = 0;
    p->cursors   = 0;
    err("clang: Failed to parse translation unit %s\n",fileName);
  }
}

void ClangParser::switchToFile(const char *fileName)
{
  if (p->tu)
  {
    delete[] p->cursors;
    clang_disposeTokens(p->tu,p->tokens,p->numTokens);
    p->tokens    = 0;
    p->numTokens = 0;
    p->cursors   = 0;

    QFileInfo fi(fileName);
    CXFile f = clang_getFile(p->tu, fileName);
    uint *pIndex=p->fileMapping.find(fileName);
    if (pIndex && *pIndex<p->numFiles)
    {
      uint i=*pIndex;
      //printf("switchToFile %s: len=%ld\n",fileName,p->ufs[i].Length);
      CXSourceLocation fileBegin = clang_getLocationForOffset(p->tu, f, 0);
      CXSourceLocation fileEnd   = clang_getLocationForOffset(p->tu, f, p->ufs[i].Length);
      CXSourceRange    fileRange = clang_getRange(fileBegin, fileEnd);

      clang_tokenize(p->tu,fileRange,&p->tokens,&p->numTokens);
      p->cursors=new CXCursor[p->numTokens];
      clang_annotateTokens(p->tu,p->tokens,p->numTokens,p->cursors);

      p->curLine  = 1;
      p->curToken = 0;
    }
    else
    {
      err("clang: Failed to find input file %s in mapping\n",fileName);
    }
  }
}

void ClangParser::finish()
{
  static bool clangAssistedParsing = Config_getBool("CLANG_ASSISTED_PARSING");
  if (!clangAssistedParsing) return;
  if (p->tu)
  {
    //printf("ClangParser::finish()\n");
    delete[] p->cursors;
    clang_disposeTokens(p->tu,p->tokens,p->numTokens);
    clang_disposeTranslationUnit(p->tu);
    clang_disposeIndex(p->index);
    p->fileMapping.clear();
    p->tokens    = 0;
    p->numTokens = 0;
    p->cursors   = 0;
  }
  for (uint i=0;i<p->numFiles;i++)
  {
    free((void *)p->ufs[i].Filename);
  }
  delete[] p->ufs;
  delete[] p->sources;
  p->ufs       = 0;
  p->sources   = 0;
  p->numFiles  = 0;
  p->tu        = 0;
}

int ClangParser::Private::getCurrentTokenLine()
{
  uint l, c;
  if (numTokens==0) return 1;
  // guard against filters that reduce the number of lines
  if (curToken>=numTokens) curToken=numTokens-1;
  CXSourceLocation start = clang_getTokenLocation(tu,tokens[curToken]);
  clang_getSpellingLocation(start, 0, &l, &c, 0);
  return l;
}

QCString ClangParser::lookup(uint line,const char *symbol)
{
  //printf("ClangParser::lookup(%d,%s)\n",line,symbol);
  QCString result;
  if (symbol==0) return result;
  static bool clangAssistedParsing = Config_getBool("CLANG_ASSISTED_PARSING");
  if (!clangAssistedParsing) return result;

  int sl = strlen(symbol);
  uint l = p->getCurrentTokenLine();
  while (l>=line && p->curToken>0)
  {
    if (l==line) // already at the right line
    {
      p->curToken--; // linear search to start of the line
      l = p->getCurrentTokenLine();
    }
    else 
    {
      p->curToken/=2; // binary search backward
      l = p->getCurrentTokenLine();
    }
  }
  bool found=FALSE;
  while (l<=line && p->curToken<p->numTokens && !found)
  {
    CXString tokenString = clang_getTokenSpelling(p->tu, p->tokens[p->curToken]);
    //if (l==line)
    //{
    //  printf("try to match symbol %s with token %s\n",symbol,clang_getCString(tokenString));
    //}
    const char *ts = clang_getCString(tokenString);
    int tl = strlen(ts);
    int startIndex = p->curToken;
    if (l==line && strncmp(ts,symbol,tl)==0) // found partial match at the correct line
    {
      int offset = tl;
      while (offset<sl) // symbol spans multiple tokens
      {
        //printf("found partial match\n");
        p->curToken++;
        if (p->curToken>=p->numTokens)
        {
          break; // end of token stream
        }
        l = p->getCurrentTokenLine();
        clang_disposeString(tokenString);
        tokenString = clang_getTokenSpelling(p->tu, p->tokens[p->curToken]);
        ts = clang_getCString(tokenString);
        tl = ts ? strlen(ts) : 0;
        // skip over any spaces in the symbol
        char c;
        while (offset<sl && ((c=symbol[offset])==' ' || c=='\t' || c=='\r' || c=='\n'))
        {
          offset++;
        }
        if (strncmp(ts,symbol+offset,tl)!=0) // next token matches?
        {
          //printf("no match '%s'<->'%s'\n",ts,symbol+offset);
          break; // no match
        }
        //printf("partial match '%s'<->'%s'\n",ts,symbol+offset);
        offset+=tl;
      }
      if (offset==sl) // symbol matches the token(s)
      {
        CXCursor c = p->cursors[p->curToken];
        CXString usr = clang_getCursorUSR(c);
        //printf("found full match %s usr='%s'\n",symbol,clang_getCString(usr));
        result = clang_getCString(usr);
        clang_disposeString(usr);
        found=TRUE;
      }
      else // reset token cursor to start of the search
      {
        p->curToken = startIndex;
      }
    }
    clang_disposeString(tokenString);
    p->curToken++;
    if (p->curToken<p->numTokens)
    {
      l = p->getCurrentTokenLine();
    }
  }
  //if (!found)
  //{
  //  printf("Did not find symbol %s at line %d :-(\n",symbol,line);
  //}
  //else
  //{
  //  printf("Found symbol %s usr=%s\n",symbol,result.data());
  //}
  return result;
}

static QCString keywordToType(const char *keyword)
{
  static bool init=TRUE;
  static QDict<void> flowKeywords(47);
  static QDict<void> typeKeywords(47);
  if (init)
  {
    flowKeywords.insert("break",(void*)0x8);
    flowKeywords.insert("case",(void*)0x8);
    flowKeywords.insert("catch",(void*)0x8);
    flowKeywords.insert("continue",(void*)0x8);
    flowKeywords.insert("default",(void*)0x8);
    flowKeywords.insert("do",(void*)0x8);
    flowKeywords.insert("else",(void*)0x8);
    flowKeywords.insert("finally",(void*)0x8);
    flowKeywords.insert("for",(void*)0x8);
    flowKeywords.insert("foreach",(void*)0x8);
    flowKeywords.insert("for each",(void*)0x8);
    flowKeywords.insert("goto",(void*)0x8);
    flowKeywords.insert("if",(void*)0x8);
    flowKeywords.insert("return",(void*)0x8);
    flowKeywords.insert("switch",(void*)0x8);
    flowKeywords.insert("throw",(void*)0x8);
    flowKeywords.insert("throws",(void*)0x8);
    flowKeywords.insert("try",(void*)0x8);
    flowKeywords.insert("while",(void*)0x8);
    flowKeywords.insert("@try",(void*)0x8);
    flowKeywords.insert("@catch",(void*)0x8);
    flowKeywords.insert("@finally",(void*)0x8);

    typeKeywords.insert("bool",(void*)0x8);
    typeKeywords.insert("char",(void*)0x8);
    typeKeywords.insert("double",(void*)0x8);
    typeKeywords.insert("float",(void*)0x8);
    typeKeywords.insert("int",(void*)0x8);
    typeKeywords.insert("long",(void*)0x8);
    typeKeywords.insert("object",(void*)0x8);
    typeKeywords.insert("short",(void*)0x8);
    typeKeywords.insert("signed",(void*)0x8);
    typeKeywords.insert("unsigned",(void*)0x8);
    typeKeywords.insert("void",(void*)0x8);
    typeKeywords.insert("wchar_t",(void*)0x8);
    typeKeywords.insert("size_t",(void*)0x8);
    typeKeywords.insert("boolean",(void*)0x8);
    typeKeywords.insert("id",(void*)0x8);
    typeKeywords.insert("SEL",(void*)0x8);
    typeKeywords.insert("string",(void*)0x8);
    typeKeywords.insert("nullptr",(void*)0x8);
    init=FALSE;
  }
  if (flowKeywords[keyword]) return "keywordflow";
  if (typeKeywords[keyword]) return "keywordtype";
  return "keyword";
}

static void writeLineNumber(CodeOutputInterface &ol,FileDef *fd,uint line)
{
  Definition *d = fd ? fd->getSourceDefinition(line) : 0;
  if (d && d->isLinkable())
  {
    g_currentDefinition=d;
    g_currentLine=line;
    MemberDef *md = fd->getSourceMember(line);
    if (md && md->isLinkable())  // link to member
    {
      if (g_currentMemberDef!=md) // new member, start search for body
      {
        g_searchForBody=TRUE;
        g_insideBody=FALSE;
        g_bracketCount=0;
      }
      g_currentMemberDef=md;
      ol.writeLineNumber(md->getReference(),
                         md->getOutputFileBase(),
                         md->anchor(),
                         line);
    }
    else // link to compound
    {
      g_currentMemberDef=0;
      ol.writeLineNumber(d->getReference(),
                         d->getOutputFileBase(),
                         d->anchor(),
                         line);
    }
  }
  else // no link
  {
    ol.writeLineNumber(0,0,0,line);
  }

  // set search page target
  if (Doxygen::searchIndex)
  {
    QCString lineAnchor;
    lineAnchor.sprintf("l%05d",line);
    ol.setCurrentDoc(fd,lineAnchor,TRUE);
  }

  //printf("writeLineNumber(%d) g_searchForBody=%d\n",line,g_searchForBody);
}

static void codifyLines(CodeOutputInterface &ol,FileDef *fd,const char *text,
                        uint &line,uint &column,const char *fontClass=0)
{
  if (fontClass) ol.startFontClass(fontClass);
  const char *p=text,*sp=p;
  char c;
  bool done=FALSE;
  while (!done)
  {
    sp=p;
    while ((c=*p++) && c!='\n') { column++; }
    if (c=='\n')
    {
      line++;
      int l = (int)(p-sp-1);
      column=l+1;
      char *tmp = (char*)malloc(l+1);
      memcpy(tmp,sp,l);
      tmp[l]='\0';
      ol.codify(tmp);
      free(tmp);
      if (fontClass) ol.endFontClass();
      ol.endCodeLine();
      ol.startCodeLine(TRUE);
      writeLineNumber(ol,fd,line);
      if (fontClass) ol.startFontClass(fontClass);
    }
    else
    {
      ol.codify(sp);
      done=TRUE;
    }
  }
  if (fontClass) ol.endFontClass();
}

static void writeMultiLineCodeLink(CodeOutputInterface &ol,
                  FileDef *fd,uint &line,uint &column,
                  Definition *d,
                  const char *text)
{
  static bool sourceTooltips = Config_getBool("SOURCE_TOOLTIPS");
  TooltipManager::instance()->addTooltip(d);
  QCString ref  = d->getReference();
  QCString file = d->getOutputFileBase();
  QCString anchor = d->anchor();
  QCString tooltip;
  if (!sourceTooltips) // fall back to simple "title" tooltips
  {
   tooltip = d->briefDescriptionAsTooltip();
  }
  bool done=FALSE;
  char *p=(char *)text;
  while (!done)
  {
    char *sp=p;
    char c;
    while ((c=*p++) && c!='\n') { column++; }
    if (c=='\n')
    {
      line++;
      *(p-1)='\0';
      //printf("writeCodeLink(%s,%s,%s,%s)\n",ref,file,anchor,sp);
      ol.writeCodeLink(ref,file,anchor,sp,tooltip);
      ol.endCodeLine();
      ol.startCodeLine(TRUE);
      writeLineNumber(ol,fd,line);
    }
    else
    {
      //printf("writeCodeLink(%s,%s,%s,%s)\n",ref,file,anchor,sp);
      ol.writeCodeLink(ref,file,anchor,sp,tooltip);
      done=TRUE;
    }
  }
}

void ClangParser::linkInclude(CodeOutputInterface &ol,FileDef *fd,
    uint &line,uint &column,const char *text)
{
  QCString incName = text;
  incName = incName.mid(1,incName.length()-2); // strip ".." or  <..>
  FileDef *ifd=0;
  if (!incName.isEmpty())
  {
    FileName *fn = Doxygen::inputNameDict->find(incName);
    if (fn)
    {
      bool found=false;
      FileNameIterator fni(*fn);
      // for each include name
      for (fni.toFirst();!found && (ifd=fni.current());++fni)
      {
        // see if this source file actually includes the file
        found = fd->isIncluded(ifd->absFilePath());
        //printf("      include file %s found=%d\n",ifd->absFilePath().data(),found);
      }
    }
  }
  if (ifd)
  {
    ol.writeCodeLink(ifd->getReference(),ifd->getOutputFileBase(),0,text,ifd->briefDescriptionAsTooltip());
  }
  else
  {
    codifyLines(ol,ifd,text,line,column,"preprocessor");
  }
}

void ClangParser::linkMacro(CodeOutputInterface &ol,FileDef *fd,
    uint &line,uint &column,const char *text)
{
  MemberName *mn=Doxygen::functionNameSDict->find(text);
  if (mn)
  {
    MemberNameIterator mni(*mn);
    MemberDef *md;
    for (mni.toFirst();(md=mni.current());++mni)
    {
      if (md->isDefine())
      {
        writeMultiLineCodeLink(ol,fd,line,column,md,text);
        return;
      }
    }
  }
  codifyLines(ol,fd,text,line,column);
}


void ClangParser::linkIdentifier(CodeOutputInterface &ol,FileDef *fd,
    uint &line,uint &column,const char *text,int tokenIndex)
{
  CXCursor c = p->cursors[tokenIndex];
  CXCursor r = clang_getCursorReferenced(c);
  if (!clang_equalCursors(r, c))
  {
    c=r; // link to referenced location
  }
  CXCursor t = clang_getSpecializedCursorTemplate(c);
  if (!clang_Cursor_isNull(t) && !clang_equalCursors(t,c))
  {
    c=t; // link to template 
  }
  CXString usr = clang_getCursorUSR(c);
  const char *usrStr = clang_getCString(usr);

  Definition *d = usrStr ? Doxygen::clangUsrMap->find(usrStr) : 0;
  //CXCursorKind kind = clang_getCursorKind(c);
  //if (d==0)
  //{
  //  printf("didn't find definition for '%s' usr='%s' kind=%d\n",
  //      text,usrStr,kind);
  //}
  //else
  //{
  //  printf("found definition for '%s' usr='%s' name='%s'\n",
  //      text,usrStr,d->name().data());
  //}
  if (d && d->isLinkable())
  {
    if (g_insideBody &&
        g_currentMemberDef && d->definitionType()==Definition::TypeMember && 
        (g_currentMemberDef!=d || g_currentLine<line)) // avoid self-reference
    {
      addDocCrossReference(g_currentMemberDef,(MemberDef*)d);
    }
    writeMultiLineCodeLink(ol,fd,line,column,d,text);
  }
  else
  {
    codifyLines(ol,fd,text,line,column);
  }
  clang_disposeString(usr);
}

static void detectFunctionBody(const char *s)
{
  //printf("punct=%s g_searchForBody=%d g_insideBody=%d g_bracketCount=%d\n",
  //  s,g_searchForBody,g_insideBody,g_bracketCount);

  if (g_searchForBody && (qstrcmp(s,":")==0 || qstrcmp(s,"{")==0)) // start of 'body' (: is for constructor)
  {
    g_searchForBody=FALSE;
    g_insideBody=TRUE;
  }
  else if (g_searchForBody && qstrcmp(s,";")==0) // declaration only
  {
    g_searchForBody=FALSE;
    g_insideBody=FALSE;
  }
  if (g_insideBody && qstrcmp(s,"{")==0) // increase scoping level
  {
    g_bracketCount++;
  }
  if (g_insideBody && qstrcmp(s,"}")==0) // decrease scoping level
  {
    g_bracketCount--;
    if (g_bracketCount<=0) // got outside of function body
    {
      g_insideBody=FALSE;
      g_bracketCount=0;
    }
  }
}

void ClangParser::writeSources(CodeOutputInterface &ol,FileDef *fd)
{
  TooltipManager::instance()->clearTooltips();
  // (re)set global parser state
  g_currentDefinition=0;
  g_currentMemberDef=0;
  g_currentLine=0;
  g_searchForBody=FALSE;
  g_insideBody=FALSE;
  g_bracketCount=0;

  unsigned int line=1,column=1;
  QCString lineNumber,lineAnchor;
  ol.startCodeLine(TRUE);
  writeLineNumber(ol,fd,line);
  for (unsigned int i=0;i<p->numTokens;i++)
  {
    CXSourceLocation start = clang_getTokenLocation(p->tu, p->tokens[i]);
    unsigned int l, c;
    clang_getSpellingLocation(start, 0, &l, &c, 0);
    if (l > line) column = 1;
    while (line<l) 
    { 
      line++; 
      ol.endCodeLine();
      ol.startCodeLine(TRUE);
      writeLineNumber(ol,fd,line);
    } 
    while (column<c) { ol.codify(" "); column++; }
    CXString tokenString = clang_getTokenSpelling(p->tu, p->tokens[i]);
    char const *s = clang_getCString(tokenString);
    CXCursorKind cursorKind  = clang_getCursorKind(p->cursors[i]);
    CXTokenKind tokenKind = clang_getTokenKind(p->tokens[i]);
    //printf("%d:%d %s cursorKind=%d tokenKind=%d\n",line,column,s,cursorKind,tokenKind);
    switch (tokenKind)
    {
      case CXToken_Keyword: 
        if (strcmp(s,"operator")==0)
        {
          linkIdentifier(ol,fd,line,column,s,i);
        }
        else
        {
          codifyLines(ol,fd,s,line,column,
              cursorKind==CXCursor_PreprocessingDirective ? "preprocessor" :
              keywordToType(s));
        }
        break;
      case CXToken_Literal: 
        if (cursorKind==CXCursor_InclusionDirective)
        {
          linkInclude(ol,fd,line,column,s);
        }
        else if (s[0]=='"' || s[0]=='\'') 
        {
          codifyLines(ol,fd,s,line,column,"stringliteral");
        }
        else 
        {
          codifyLines(ol,fd,s,line,column);
        }
        break;
      case CXToken_Comment: 
        codifyLines(ol,fd,s,line,column,"comment");
        break;
      default:  // CXToken_Punctuation or CXToken_Identifier
        if (tokenKind==CXToken_Punctuation)
        {
          detectFunctionBody(s);
          //printf("punct %s: %d\n",s,cursorKind);
        }
        switch (cursorKind)
        {
          case CXCursor_PreprocessingDirective:
            codifyLines(ol,fd,s,line,column,"preprocessor");
            break;
          case CXCursor_MacroDefinition:
            codifyLines(ol,fd,s,line,column,"preprocessor");
            break;
          case CXCursor_InclusionDirective:
            linkInclude(ol,fd,line,column,s);
            break;
          case CXCursor_MacroExpansion:
            linkMacro(ol,fd,line,column,s);
            break;
          default:
            if (tokenKind==CXToken_Identifier ||
                (tokenKind==CXToken_Punctuation && // for operators
                 (cursorKind==CXCursor_DeclRefExpr ||
                  cursorKind==CXCursor_MemberRefExpr ||
                  cursorKind==CXCursor_CallExpr ||
                  cursorKind==CXCursor_ObjCMessageExpr)
                 )
               )
            {
              linkIdentifier(ol,fd,line,column,s,i);
              if (Doxygen::searchIndex)
              {
                ol.addWord(s,FALSE);
              }
            }
            else
            {
              codifyLines(ol,fd,s,line,column);
            }
            break;
        }
    }
    clang_disposeString(tokenString);
  }
  ol.endCodeLine();
  TooltipManager::instance()->writeTooltips(ol);
}

ClangParser::ClangParser()
{
  p = new Private;
}

ClangParser::~ClangParser()
{
  delete p;
}

//--------------------------------------------------------------------------
#else // use stubbed functionality in case libclang support is disabled.

void ClangParser::start(const char *,QStrList &)
{
}

void ClangParser::switchToFile(const char *)
{
}

void ClangParser::finish()
{
}

QCString ClangParser::lookup(uint,const char *)
{
  return "";
}

void ClangParser::writeSources(CodeOutputInterface &,FileDef *)
{
}

ClangParser::ClangParser()
{
}

ClangParser::~ClangParser()
{
}


#endif
//--------------------------------------------------------------------------