summaryrefslogtreecommitdiffstats
path: root/src/fortrancode.l
blob: 183f4d96709f86e2d4a711526bd0793d99cae701 (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
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
/******************************************************************************
 *
 * Parser for syntax hightlighting and references for Fortran90 F subset
 *
 * Copyright (C) by Anke Visser
 * based on the work of Dimitri van Heesch.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation under the terms of the GNU General Public License is hereby 
 * granted. No representations are made about the suitability of this software 
 * for any purpose. It is provided "as is" without express or implied warranty.
 * See the GNU General Public License for more details.
 *
 * Documents produced by Doxygen are derivative works derived from the
 * input used in their production; they are not affected by this license.
 *
 */

/**
 @todo - continutation lines not always recognized
       - merging of use-statements with same module name and different only-names
       - rename part of use-statement
       - links to interface functions 
       - references to variables
**/

%{

/*
 *	includes
 */
#include "qtbc.h"
#include <stdio.h>
#include <assert.h>
#include <ctype.h>
#include <qregexp.h>
#include <qdir.h>
#include <qstringlist.h>
#include "entry.h"
#include "doxygen.h"
#include "message.h"
#include "outputlist.h"
#include "util.h"
#include "membername.h"
#include "searchindex.h"
#include "defargs.h"

#define YY_NEVER_INTERACTIVE 1
#define YY_NO_TOP_STATE 1
   
//--------------------------------------------------------------------------------

/**
  data of an use-statement
*/
class UseEntry 
{
 public: 
   QCString module; // just for debug
   QStringList onlyNames;   /* entries of the ONLY-part */
};

/**
  module name -> list of ONLY/remote entries
  (module name = name of the module, which can be accessed via use-directive)
*/
class UseSDict : public SDict<UseEntry> 
{
  public:
    UseSDict() : SDict<UseEntry>(17) {}
};

/*===================================================================*/
/* 
 *	statics
 */
  
static QCString  docBlock;                   //!< contents of all lines of a documentation block
static QCString  currentModule=0;            //!< name of the current enclosing module
static UseSDict  *useMembers= new UseSDict;  //!< info about used modules
static UseEntry  *useEntry = 0;              //!< current use statement info
static QStack<QStringList> useStack;         //!< contains names of used modules for current program tree
static QStringList *currentUseNames= new QStringList; //! contains names of used modules of current program unit
static QCString str="";         //!> contents of fortran string

static CodeOutputInterface * g_code;

// TODO: is this still needed? if so, make it work
static QCString      g_parmType;
static QCString      g_parmName;

static const char *  g_inputString;     //!< the code fragment as text
static int	     g_inputPosition;   //!< read offset during parsing 
static int           g_inputLines;      //!< number of line in the code fragment
static int	     g_yyLineNr;        //!< current line number
static bool          g_needsTermination;
static bool          g_isFixedForm;

static bool          g_insideBody;      //!< inside subprog/program body? => create links
static const char *  g_currentFontClass;

static bool          g_exampleBlock;
static QCString      g_exampleName;
static QCString      g_exampleFile;

static FileDef *     g_sourceFileDef;
static Definition *  g_currentDefinition;
static MemberDef *   g_currentMemberDef;
static bool          g_includeCodeFragment;

static char          stringStartSymbol; // single or double quote

// simplified way to know if this is fixed form
// duplicate in fortranscanner.l
static bool recognizeFixedForm(const char* contents)
{
  int column=0;
  bool skipLine=FALSE;

  for(int i=0;;i++) {
    column++;

    switch(contents[i]) {
      case '\n':
        column=0;
        skipLine=FALSE;
        break;
      case ' ':
        break;
      case '\000':
        return FALSE;
      case 'C':
      case 'c':
      case '*':
        if(column==1) return TRUE;
        if(skipLine) break;
        return FALSE;
      case '!':
        if(column>1 && column<7) return FALSE;
        skipLine=TRUE;
        break;
      default:
        if(skipLine) break;
        if(column==7) return TRUE;
        return FALSE;
    }
  }
  return FALSE;
}

static void endFontClass()
{
  if (g_currentFontClass)
  {
    g_code->endFontClass();
    g_currentFontClass=0;
  }
}

static void startFontClass(const char *s)
{
  endFontClass();
  g_code->startFontClass(s);
  g_currentFontClass=s;
}

static void setCurrentDoc(const QCString &name,const QCString &base,const QCString &anchor="")
{
  static bool searchEngineEnabled=Config_getBool("SEARCHENGINE");
  if (searchEngineEnabled)
  {
    Doxygen::searchIndex->setCurrentDoc(name,base,anchor);
  }
}

static void addToSearchIndex(const char *text)
{
  static bool searchEngineEnabled=Config_getBool("SEARCHENGINE");
  if (searchEngineEnabled)
  {
    Doxygen::searchIndex->addWord(text,FALSE);
  }
}

/*! start a new line of code, inserting a line number if g_sourceFileDef
 * is TRUE. If a definition starts at the current line, then the line
 * number is linked to the documentation of that definition.
 */
static void startCodeLine()
{
  if (g_sourceFileDef)
  {
    //QCString lineNumber,lineAnchor;
    //lineNumber.sprintf("%05d",g_yyLineNr);
    //lineAnchor.sprintf("l%05d",g_yyLineNr);
   
    Definition *d   = g_sourceFileDef->getSourceDefinition(g_yyLineNr);
    //printf("startCodeLine %d d=%s\n", g_yyLineNr,d ? d->name().data() : "<null>");
    if (!g_includeCodeFragment && d)
    {
      g_currentDefinition = d;
      g_currentMemberDef = g_sourceFileDef->getSourceMember(g_yyLineNr);
      g_insideBody = FALSE;
      g_parmType.resize(0);
      g_parmName.resize(0);
      QCString lineAnchor;
      lineAnchor.sprintf("l%05d",g_yyLineNr);
      if (g_currentMemberDef)
      {
        g_code->writeLineNumber(g_currentMemberDef->getReference(),
	                        g_currentMemberDef->getOutputFileBase(),
	                        g_currentMemberDef->anchor(),g_yyLineNr);
        setCurrentDoc(
                                g_currentMemberDef->qualifiedName(),
	                        g_sourceFileDef->getSourceFileBase(),
	                        lineAnchor);
      }
      else if (d->isLinkableInProject())
      {
        g_code->writeLineNumber(d->getReference(),
	                        d->getOutputFileBase(),
	                        0,g_yyLineNr);
        setCurrentDoc(
                                d->qualifiedName(),
	                        g_sourceFileDef->getSourceFileBase(),
	                        lineAnchor);
      }
    }
    else
    {
      g_code->writeLineNumber(0,0,0,g_yyLineNr);
    }
  }
  g_code->startCodeLine(); 
  if (g_currentFontClass)
  {
    g_code->startFontClass(g_currentFontClass);
  }
}


static void endFontClass();
static void endCodeLine()
{
  if (g_currentFontClass) { g_code->endFontClass(); }
  g_code->endCodeLine();
}

/*! write a code fragment `text' that may span multiple lines, inserting
 * line numbers for each line.
 */
static void codifyLines(char *text)
{
  //printf("codifyLines(%d,\"%s\")\n",g_yyLineNr,text);
  char *p=text,*sp=p;
  char c;
  bool done=FALSE;
  while (!done)
  {
    sp=p;
    while ((c=*p++) && c!='\n');
    if (c=='\n')
    {
      g_yyLineNr++;
      *(p-1)='\0';
      g_code->codify(sp);
      endCodeLine();
      if (g_yyLineNr<g_inputLines) 
      {
	startCodeLine();
      }
    }
    else
    {
      g_code->codify(sp);
      done=TRUE;
    }
  }
}

static void codifyLines(QCString str)
{
  char *tmp= (char *) malloc(str.length()+1);
  strcpy(tmp, str);
  codifyLines(tmp);
  free(tmp);
}

/*! writes a link to a fragment \a text that may span multiple lines, inserting
 * line numbers for each line. If \a text contains newlines, the link will be 
 * split into multiple links with the same destination, one for each line.
 */
static void writeMultiLineCodeLink(CodeOutputInterface &ol,
                  const char *ref,const char *file,
                  const char *anchor,const char *text)
{
  bool done=FALSE;
  char *p=(char *)text;
  while (!done)
  {
    char *sp=p;
    char c;
    while ((c=*p++) && c!='\n');
    if (c=='\n')
    {
      g_yyLineNr++;
      *(p-1)='\0';
      //printf("writeCodeLink(%s,%s,%s,%s)\n",ref,file,anchor,sp);
      ol.writeCodeLink(ref,file,anchor,sp,0);
      endCodeLine();
      if (g_yyLineNr<g_inputLines) 
      {
	startCodeLine();
      }
    }
    else
    {
      //printf("writeCodeLink(%s,%s,%s,%s)\n",ref,file,anchor,sp);
      ol.writeCodeLink(ref,file,anchor,sp,0);
      done=TRUE;
    }
  }
}

/**
  generates dictionay entries that are used if REFERENCED_BY_RELATION ... options are set
  (e.g. the "referenced by ..." list after the function documentation) 
*/

static void addDocCrossReference(MemberDef *src, MemberDef *dst)
{
  if (dst->isTypedef() || dst->isEnumerate()) return; // don't add types
 //printf("======= addDocCrossReference src=%s,dst=%s\n",src->name().data(),dst->name().data());
  if ((Config_getBool("REFERENCED_BY_RELATION") || Config_getBool("CALLER_GRAPH")) && 
      (src->isFunction()))
  {
    dst->addSourceReferencedBy(src);
  }
  if ((Config_getBool("REFERENCES_RELATION") || Config_getBool("CALL_GRAPH")) && (src->isFunction()))
  {
    src->addSourceReferences(dst);
  }
}

//-------------------------------------------------------------------------------
/**
  searches for definition of a type
  @param tname the name of the type
  @param moduleName name of enclosing module or null, if global entry
  @param cd the entry, if found or null
  @param useDict dictionary of data of USE-statement
  @returns true, if type is found 
*/
static bool getFortranTypeDefs(const QCString &tname, const QCString &moduleName, 
                               ClassDef *&cd, UseSDict *usedict=0)
{
  if (tname.isEmpty()) return FALSE; /* empty name => nothing to link */

  //cout << "=== search for type: " << tname << endl;

  // search for type  
  if ((cd=Doxygen::classSDict->find(tname))) 
  {
    //cout << "=== type found in global module" << endl;
    return TRUE;
  }
  else if (moduleName && (cd= Doxygen::classSDict->find(moduleName+"::"+tname))) 
  {
    //cout << "=== type found in local module" << endl;
    return TRUE;
  }
  else 
  {
    UseEntry *use;
    for (UseSDict::Iterator di(*usedict); (use=di.current()); ++di)
      if ((cd= Doxygen::classSDict->find(use->module+"::"+tname))) 
      {
 	//cout << "===  type found in used module" << endl;
        return TRUE;
      }
  }

  return FALSE;
}

/**
  searches for definition of function memberName
  @param memberName the name of the function/variable
  @param moduleName name of enclosing module or null, if global entry
  @param md the entry, if found or null
  @param usedict array of data of USE-statement
  @returns true, if found 
*/
static bool getFortranDefs(const QCString &memberName, const QCString &moduleName, 
                           MemberDef *&md, UseSDict *usedict=0)
{
  if (memberName.isEmpty()) return FALSE; /* empty name => nothing to link */

  // search for function
  MemberName *mn = Doxygen::functionNameSDict->find(memberName);

  if (mn) // name is known
  {
      MemberListIterator mli(*mn);
      for (mli.toFirst();(md=mli.current());++mli) // all found functions with given name
      {
        FileDef  *fd=md->getFileDef();
        GroupDef *gd=md->getGroupDef();

 //cout << "found link with same name: " << fd->fileName() << "  " <<  memberName;
 //if (md->getNamespaceDef() != 0) cout << " in namespace " << md->getNamespaceDef()->name();cout << endl;

        if ((gd && gd->isLinkable()) || (fd && fd->isLinkable()))
        {
           NamespaceDef *nspace= md->getNamespaceDef();

           if (nspace == 0) 
	   { // found function in global scope
             return TRUE;
           }
           else if (moduleName == nspace->name()) 
	   { // found in local scope
             return TRUE;
           }
           else 
	   { // else search in used modules
	     QCString moduleName= nspace->name();
	     UseEntry *ue= usedict->find(moduleName);
	     if (ue) 
	     {
               // check if only-list exists and if current entry exists is this list
	       QStringList &only= ue->onlyNames;
	       if (only.isEmpty()) 
	       {
               //cout << " found in module " << moduleName << " entry " << memberName <<  endl;
                 return TRUE; // whole module used
               }
               else
	       {
	         for ( QStringList::Iterator it = only.begin(); it != only.end(); ++it)
                 {
                   //cout << " search in only: " << moduleName << ":: " << memberName << "==" << (*it)<<  endl;
		   if (memberName == (QCString)(*it))
                     return TRUE; // found in ONLY-part of use list
	         }
	       }
             }
           }
        } // if linkable
      } // for
  }
  return FALSE;
}

/**
 gets the link to a generic procedure which depends not on the name, but on the parameter list
 @todo implementation
*/
static bool getGenericProcedureLink(const ClassDef *cd, 
                                    const char *memberText, 
				    CodeOutputInterface &ol) 
{
  (void)cd;
  (void)memberText;
  (void)ol;
  return FALSE;
}

static bool getLink(UseSDict *usedict, // dictonary with used modules
                    const char *memberText,  // exact member text
		    CodeOutputInterface &ol,
		    const char *text)
{
  MemberDef *md;
  QCString memberName= removeRedundantWhiteSpace(memberText);
  //printf("Trying `%s'::`%s'\n",c.data(),m.data());

  if (getFortranDefs(memberName, currentModule, md, usedict) && md->isLinkable())
  { 
    //if (md->isVariable()) return FALSE; // variables aren't handled yet	

    Definition *d = md->getOuterScope()==Doxygen::globalScope ?
	            md->getBodyDef() : md->getOuterScope();
    if (md->getGroupDef()) d = md->getGroupDef();
    if (d && d->isLinkable())
    {
      if (g_currentDefinition && g_currentMemberDef && md!=g_currentMemberDef && g_insideBody)
      { 
	addDocCrossReference(g_currentMemberDef,md); 
      }     
      ol.linkableSymbol(g_yyLineNr,md->name(),md,
	                g_currentMemberDef ? g_currentMemberDef : g_currentDefinition);
      writeMultiLineCodeLink(ol,md->getReference(),
	                        md->getOutputFileBase(),
	                        md->anchor(),
				text ? text : memberText);
      addToSearchIndex(text ? text : memberText);
      return TRUE;
    } 
  }
  return FALSE;
}


static void generateLink(CodeOutputInterface &ol, char *lname)
{
  ClassDef *cd=0;
 
  // check if lname is a linkable type or interface
  if ( (getFortranTypeDefs(lname, currentModule, cd, useMembers)) && cd->isLinkable() )
  {
    if ( (cd->compoundType() == ClassDef::Class) && // was  Entry::INTERFACE_SEC) &&
         (getGenericProcedureLink(cd, lname, ol)) ) 
    {
      //cout << "=== generic procedure resolved" << endl; 
    } 
    else 
    { // write type or interface link
      ol.linkableSymbol(g_yyLineNr, lname, cd, g_currentMemberDef?g_currentMemberDef:g_currentDefinition);
      writeMultiLineCodeLink(ol,cd->getReference(),cd->getOutputFileBase(),0,lname);
      addToSearchIndex(lname);
    }
  }
  // check for function/variable
  else if (getLink(useMembers, lname, ol, lname)) 
  {
    //cout << "=== found link for " << lname << endl;
  }
  else 
  {
    // nothing found, just write out the word
    ol.linkableSymbol(g_yyLineNr, lname, 0, g_currentMemberDef?g_currentMemberDef:g_currentDefinition);
    //startFontClass("charliteral"); //test
    codifyLines(lname);
    //endFontClass(); //test
    addToSearchIndex(lname);
  }
}

/*! counts the number of lines in the input */
static int countLines()
{
  const char *p=g_inputString;
  char c;
  int count=1;
  while ((c=*p)) 
  { 
    p++ ; 
    if (c=='\n') count++;  
  }
  if (p>g_inputString && *(p-1)!='\n') 
  { // last line does not end with a \n, so we add an extra
    // line and explicitly terminate the line after parsing.
    count++, 
    g_needsTermination=TRUE; 
  } 
  return count;
}

//----------------------------------------------------------------------------
/** start use list */
void startUseScope() 
{
  //fprintf("===> startUse %s",yytext);
  useStack.push(currentUseNames);
  currentUseNames= new QStringList;
}

/** end use list */
void endUseScope() 
{
  //fprintf(stderr,"===> endUse %s",yytext);
  //UseSDict::Iterator di(*useMembers); UseEntry *ue;
  //for (di.toFirst(); ue=di.current(); ++di){cout << ue->module ;} cout << endl;

  for ( QStringList::Iterator it = currentUseNames->begin(); it != currentUseNames->end(); ++it) 
  {
    useMembers->remove(*it);
  }
  delete currentUseNames;
  currentUseNames= useStack.pop(); 
  if (currentUseNames == 0) 
  {
     fprintf(stderr,"WARNING: fortrancode.l: stack empty!"); 
     //exit(-1);
  }
}

void addUse(QString moduleName) 
{
  currentUseNames->append(moduleName);
}
//----------------------------------------------------------------------------

/* -----------------------------------------------------------------*/
#undef	YY_INPUT
#define	YY_INPUT(buf,result,max_size) result=yyread(buf,max_size);

static int yyread(char *buf,int max_size)
{
    int c=0;
    while( c < max_size && g_inputString[g_inputPosition] )
    {
	*buf = g_inputString[g_inputPosition++] ;
	c++; buf++;
    }
    return c;
}

%}

IDSYM	  [a-z_A-Z0-9]
ID        [a-z_A-Z]+{IDSYM}*
SUBPROG   (subroutine|function)
B         [ \t]
BS        [ \t]*
BS_       [ \t]+
COMMA     {BS},{BS}
ARGS      {BS}("("[^)]*")"){BS}

NUM_TYPE  (complex|integer|logical|real)
KIND      {ARGS}
CHAR      (CHARACTER{ARGS}?|CHARACTER{BS}"*"({BS}[0-9]+|{ARGS}))
TYPE_SPEC (({NUM_TYPE}({BS}"*"{BS}[0-9]+)?)|({NUM_TYPE}{KIND})|DOUBLE{B}PRECISION|{CHAR})

INTENT_SPEC intent{BS}"("{BS}(in|out|in{BS}out){BS}")"
ATTR_SPEC (ALLOCATABLE|DIMENSION{ARGS}|EXTERNAL|{INTENT_SPEC}|INTRINSIC|OPTIONAL|PARAMETER|POINTER|PRIVATE|PUBLIC|SAVE|TARGET|RECURSIVE|PURE|ELEMENTAL)
ACCESS_SPEC (PRIVATE|PUBLIC)
/* Assume that attribute statements are almost the same as attributes. */
ATTR_STMT {ATTR_SPEC}|DIMENSION
COMMANDS  (BLOCK{BS}DATA|DO|SELECT|CASE|WHERE|IF|THEN|ELSE|MODULE{BS_}PROCEDURE|CONTAINS|IMPLICIT{BS}NONE|CONTAINS|WRITE|READ|ALLOCATE|ALLOCATED|ASSOCIATED|DEALLOCATE|SIZE|END{BS}IF|END{BS}DO|WHILE|INQUIRE|OPEN|CLOSE|DATA)
IGNORE (CALL)

/* |  */

%option noyywrap
%option stack
%option caseless
/*%option debug*/

%x Start
%x SubCall
%x FuncDef
%x ClassName
%x ClassVar
%x Subprog
%x DocBlock
%x Use
%x UseOnly
%x TypeDecl
%x Declaration
%x DeclContLine
%x Parameterlist
%x String

%%
 /*==================================================================*/

 /*-------- ignore ------------------------------------------------------------*/

<Start>{IGNORE}/{BS}"("?                { // do not search keywords, intrinsics... TODO: complete list
  					  codifyLines(yytext);
                                        }
 /*-------- inner construct ---------------------------------------------------*/
 
<Start>{COMMANDS}/[,( \t\n].*           { // hightlight rest of fortran statements
   					  /* font class is defined e.g. in doxygen.css */
  					  startFontClass("keyword");
  					  codifyLines(yytext);
					  endFontClass();
					}
<Start>"end"({BS_}{COMMANDS})?/[ \t\n]  { 
  					  startFontClass("keyword");
  					  codifyLines(yytext);
					  endFontClass();
					}

 /*-------- use statement -------------------------------------------*/
<Start>"use"{BS_}                       { 
  					  codifyLines(yytext);
                                          yy_push_state(YY_START);
					  BEGIN(Use);     
                                        }
<Use>{ID}                               {
  					  startFontClass("keywordflow");
  					  codifyLines(yytext);
					  endFontClass();

					  /* append module name to use dict */
                                          useEntry = new UseEntry();
					  useEntry->module = yytext;
                                          useMembers->append(yytext, useEntry);
					  addUse(yytext);
                                        }           
<Use>,{BS}"ONLY"                        { // TODO: rename
 					  codifyLines(yytext);
                                          yy_push_state(YY_START);
					  BEGIN(UseOnly);     
                                        }           
<UseOnly>{BS},{BS}                      { codifyLines(yytext); }
<UseOnly>{ID}                           {
 					  codifyLines(yytext);
                                          useEntry->onlyNames.append(yytext);
                                        }   
<Use,UseOnly>"\n"                       {
                                          unput(*yytext);
                                          yy_pop_state();
                                        }
       
 /*-------- fortran module  -----------------------------------------*/
<Start>("program"|"module"|"type"|"interface")/{BS_}|({COMMA}{ACCESS_SPEC})|\n {  //
					  startUseScope();
  					  startFontClass("keyword"); 
  					  codifyLines(yytext);
					  endFontClass();
                                          yy_push_state(YY_START);
					  BEGIN(ClassName); 
	                                  if (!strcmp(yytext,"module")) currentModule="module";
					}
<ClassName>{ID}               	        {
	                                  if (currentModule == "module") currentModule=yytext;
					  generateLink(*g_code,yytext);
                                          yy_pop_state();
 					}
<ClassName>\n				{ // interface may be without name
                                          yy_pop_state();
					  REJECT;
					}
<Start>"end"({BS_}"module")?.*          { // just reset currentModule, rest is done in following rule
                                          currentModule=0;
					  REJECT;
                                        }
<Start>^{BS}"end"({BS}("program"|"module"|"type"|"interface")({BS_}{ID})?)?{BS}/(\n|!) {  //
                                          endUseScope();
 					  startFontClass("keyword"); 
  					  codifyLines(yytext);
					  endFontClass();
                                        }

 /*-------- subprog definition -------------------------------------*/
<Start>{TYPE_SPEC}{BS}/{SUBPROG}{BS_}  {   // TYPE_SPEC is for old function style function result
   					  startFontClass("keyword");
  					  codifyLines(yytext);
					  endFontClass();
                                       }              
<Start>{SUBPROG}{BS_}                  {  // Fortran subroutine or function found
   					  startFontClass("keyword");
  					  codifyLines(yytext);
					  endFontClass();
                                          yy_push_state(YY_START);
                                          BEGIN(Subprog);
                                        }
<Subprog>{ID}                           { // subroutine/function name
                                          //cout << "===> start procedure " << yytext << endl;
					  startUseScope();
					  generateLink(*g_code,yytext);
                                        }
<Subprog>"(".*                          { // ignore rest of line 
 					  codifyLines(yytext);
                                        }
<Subprog>"\n"                           { codifyLines(yytext);
                                          yy_pop_state();
                                        }
<Start>"^{BS}end"({BS}{SUBPROG}({BS_}{ID})?)?{BS}/(\n|!) {  // Fortran subroutine or function ends
                                          //cout << "===> end function " << yytext << endl;
                                          endUseScope();
   					  startFontClass("keyword");
  					  codifyLines(yytext);
					  endFontClass();
                                        }
 /*-------- variable declaration ----------------------------------*/
<Start>"TYPE"{BS}"("                    {
                                          yy_push_state(YY_START);
					  BEGIN(TypeDecl);
   					  startFontClass("keywordtype");
					  g_code->codify(yytext);
					  endFontClass();
                                        }
<TypeDecl>{ID}                          { // link type
					  g_insideBody=TRUE;
					  generateLink(*g_code,yytext);
					  g_insideBody=FALSE;
                                        }
<TypeDecl>")"                           { 
					  BEGIN(Declaration);
   					  startFontClass("keywordtype");
					  g_code->codify(yytext);
					  endFontClass();
                                        }
<Start>{TYPE_SPEC}/[,:( ]               { 
                                          yy_push_state(YY_START);
					  BEGIN(Declaration);
   					  startFontClass("keywordtype");
					  g_code->codify(yytext);
					  endFontClass();
                                       }
<Start>{ATTR_SPEC}		       { 
   					  startFontClass("keywordtype");
					  g_code->codify(yytext);
					  endFontClass();
                                       }
<Declaration>({TYPE_SPEC}|{ATTR_SPEC})/[,:( ] { //| variable deklaration
  					  startFontClass("keywordtype");
					  g_code->codify(yytext);
					  endFontClass();
  					}
<Declaration>"&"                        { // continuation line
                                          yy_push_state(YY_START);
					  BEGIN(DeclContLine);					  
 					}
<DeclContLine>"\n"                      { // declaration not yet finished
                                          codifyLines(yytext);
                                          yy_pop_state();
 				 	}
<Declaration>"\n"                       { // end declaration line
					  codifyLines(yytext);
                                          yy_pop_state();
 					}

 /*-------- subprog calls  -----------------------------------------*/

<Start>"call"{BS_}                      {
  					  codifyLines(yytext);
                                          yy_push_state(YY_START);
					  BEGIN(SubCall);
                                        }
<SubCall>{ID}                           { // subroutine call
					  g_insideBody=TRUE;
                                          generateLink(*g_code, yytext);
					  g_insideBody=FALSE;
	                                  yy_pop_state();
                                        }
<Start>{ID}{BS}/"("                     { // function call
					  g_insideBody=TRUE;
                                          generateLink(*g_code, yytext);
					  g_insideBody=FALSE;
                                        }

 /*-------- comments ---------------------------------------------------*/
<Start>\n?{BS}"!>"                      { // start comment line or comment block
                                          yy_push_state(YY_START);
					  BEGIN(DocBlock);
                                          docBlock=yytext;
					}

<DocBlock>.*    			{ // contents of current comment line
                                          docBlock+=yytext;
  					}
<DocBlock>"\n"{BS}("!>"|"!"+)		{ //| comment block (next line is also comment line)
					  docBlock+=yytext; 
   					}
<DocBlock>"\n"        			{ // comment block ends at the end of this line
 					  docBlock+=yytext; 
                                          // remove special comment (default config)
  					  if (Config_getBool("STRIP_CODE_COMMENTS"))
					  {
					    g_yyLineNr+=((QCString)docBlock).contains('\n');
					    endCodeLine();
					    if (g_yyLineNr<g_inputLines) 
					    {
					      startCodeLine();
					    }
					  }
					  else // do not remove comment
					  {
					    startFontClass("comment");
					    codifyLines(docBlock);
					    endFontClass();
					  }
                                         yy_pop_state();
					}

<*>"!"[^>\n].*|"!"$ 			{ // normal comment
					  if(YY_START == String) REJECT; // ignore in strings
  					  startFontClass("comment");
  					  codifyLines(yytext);
					  endFontClass();
					}

<*>^[Cc*].*              		{ // normal comment
                                          if(! g_isFixedForm) REJECT;

  					  startFontClass("comment");
  					  codifyLines(yytext);
					  endFontClass();
					}

 /*------ preprocessor  --------------------------------------------*/ 
<Start>"#".*\n                          { startFontClass("preprocessor");
  					  codifyLines(yytext);
					  endFontClass();
                                        }
 /*------ variable references?  -------------------------------------*/ 
<Start>{ID}                             {   
  					    g_insideBody=TRUE;
                                            generateLink(*g_code, yytext);
					    g_insideBody=FALSE;
                                        }
 /*------ strings --------------------------------------------------*/ 
<*>"\\\\"                               { str+=yytext; /* ignore \\  */}
<*>"\\\""|\\\'                          { str+=yytext; /* ignore \"  */}

<String>\"|\'                           { // string ends with next quote without previous backspace 
                                          if(yytext[0]!=stringStartSymbol) REJECT; // single vs double quote
                                          str+=yytext;
  					  startFontClass("stringliteral");
  					  codifyLines(str);
					  endFontClass();
                                          yy_pop_state();
                                        }           
<String>.                               {str+=yytext;}

<*>\"|\'                                { /* string starts */
					  /* if(YY_START == StrIgnore) REJECT; // ignore in simple comments */
                                          yy_push_state(YY_START);
                                          stringStartSymbol=yytext[0]; // single or double quote
                                          BEGIN(String);
					  str=yytext;
                                        }
 /*-----------------------------------------------------------------------------*/

<*>\n					{
  					  codifyLines(yytext); 
  					}
<*>.					{ 
  					  g_code->codify(yytext);
					}
%%

/*@ ----------------------------------------------------------------------------
 */

/*===================================================================*/


void resetFortranCodeParserState() {}

void parseFortranCode(CodeOutputInterface &od,const char *className,const QCString &s, 
                  bool exBlock, const char *exName,FileDef *fd,
		  int startLine,int endLine,bool inlineFragment,
		  MemberDef *memberDef)
{
  //printf("***parseCode() exBlock=%d exName=%s fd=%p\n",exBlock,exName,fd);

  // used parameters
  (void)memberDef;
  (void)className;

  if (s.isEmpty()) return;
  g_code = &od;
  g_inputString   = s;
  g_inputPosition = 0;
  g_isFixedForm = recognizeFixedForm((const char*)s);
  g_currentFontClass = 0;
  g_needsTermination = FALSE;
  if (endLine!=-1)
    g_inputLines  = endLine+1;
  else
    g_inputLines  = countLines();

  if (startLine!=-1)
    g_yyLineNr    = startLine;
  else
    g_yyLineNr    = 1;

  g_exampleBlock  = exBlock; 
  g_exampleName   = exName;
  g_sourceFileDef = fd;
  if (exBlock && fd==0)
  {
    // create a dummy filedef for the example
    g_sourceFileDef = new FileDef("",exName);
  }
  if (g_sourceFileDef) 
  {
    setCurrentDoc(g_sourceFileDef->name(),g_sourceFileDef->getSourceFileBase());
  }
  g_currentDefinition = 0;
  g_currentMemberDef = 0;
  if (!g_exampleName.isEmpty())
  {
    g_exampleFile = convertNameToFile(g_exampleName+"-example");
  }
  g_includeCodeFragment = inlineFragment;
  startCodeLine();
  g_parmName.resize(0);
  g_parmType.resize(0);
  fcodeYYrestart( fcodeYYin );
  BEGIN( Start );
  fcodeYYlex();
  if (g_needsTermination)
  {
    endFontClass();
    g_code->endCodeLine();
  }
  if (exBlock && g_sourceFileDef)
  {
    // delete the temporary file definition used for this example
    delete g_sourceFileDef;
    g_sourceFileDef=0;
  }
  return;
}

#if !defined(YY_FLEX_SUBMINOR_VERSION) 
extern "C" { // some bogus code to keep the compiler happy
  void fcodeYYdummy() { yy_flex_realloc(0,0); } 
}
#elif YY_FLEX_SUBMINOR_VERSION<33
#error "You seem to be using a version of flex newer than 2.5.4 but older than 2.5.33. These versions do NOT work with doxygen! Please use version <=2.5.4 or >=2.5.33 or expect things to be parsed wrongly!"
#else
extern "C" { // some bogus code to keep the compiler happy
  void fcodeYYdummy() { yy_top_state(); } 
}
#endif