summaryrefslogtreecommitdiff
path: root/src/commentscan.l
blob: 1974732e44570ff3a4fb64a30273db2076be9005 (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
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
/*****************************************************************************
 *
 * Copyright (C) 1997-2020 by 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.
 *
 */

%option never-interactive
%option prefix="commentscanYY"
%option reentrant
%option extra-type="struct commentscanYY_state *"
%top{
#include <stdint.h>
// forward declare yyscan_t to improve typesafety
#define YY_TYPEDEF_YY_SCANNER_T
struct yyguts_t;
typedef yyguts_t *yyscan_t;
}

%{

/*
 *        includes
 */

#include <map>
#include <stack>
#include <string>
#include <mutex>

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <ctype.h>

#include "qcstring.h"
#include "cite.h"
#include "commentscan.h"
#include "condparser.h"
#include "config.h"
#include "debug.h"
#include "docgroup.h"
#include "doxygen.h"
#include "entry.h"
#include "formula.h"
#include "language.h"
#include "message.h"
#include "parserintf.h"
#include "reflist.h"
#include "section.h"
#include "util.h"
#include "reflist.h"

#define USE_STATE2STRING 0

// forward declarations
static bool handleBrief(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleFn(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleDef(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleOverload(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleEnum(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleDefGroup(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleAddToGroup(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleWeakGroup(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleNamespace(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handlePackage(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleConcept(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleClass(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleHeaderFile(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleProtocol(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleCategory(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleUnion(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleStruct(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleInterface(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleIdlException(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handlePage(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleMainpage(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleFile(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleDir(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleExample(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleDetails(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleRaiseWarning(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleNoop(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleName(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleTodo(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleTest(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleBug(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleSubpage(yyscan_t yyscanner,const QCString &s, const StringVector &);
static bool handleDeprecated(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleXRefItem(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleRelated(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleRelatedAlso(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleMemberOf(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleRefItem(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleSection(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleAnchor(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleImage(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleCite(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleFormatBlock(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleAddIndex(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleIf(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleIfNot(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleElseIf(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleElse(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleEndIf(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleIngroup(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleNoSubGrouping(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleShowInitializer(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleHideInitializer(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleCallgraph(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleHideCallgraph(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleCallergraph(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleHideCallergraph(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleReferencedByRelation(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleHideReferencedByRelation(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleReferencesRelation(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleHideReferencesRelation(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleInternal(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleStatic(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handlePure(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handlePrivate(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handlePrivateSection(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleProtected(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleProtectedSection(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handlePublic(yyscan_t yyscanner,const QCString &s, const StringVector &);
static bool handlePublicSection(yyscan_t yyscanner,const QCString &s, const StringVector &);
static bool handleToc(yyscan_t yyscanner,const QCString &s, const StringVector &);
static bool handleInherit(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleExtends(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleCopyDoc(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleCopyBrief(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleCopyDetails(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleParBlock(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleEndParBlock(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleParam(yyscan_t yyscanner,const QCString &, const StringVector &);
static bool handleRetval(yyscan_t yyscanner,const QCString &, const StringVector &);

#if USE_STATE2STRING
static const char *stateToString(int state);
#endif

typedef bool (*DocCmdFunc)(yyscan_t yyscanner,const QCString &name, const StringVector &optList);

enum class CommandSpacing
{
  Invisible, // command sets some property but does not appear in the output.
  Inline,    // command appears inline in the output which can be a brief description.
  Block,     // command starts a new paragraphs / ends a brief description.
  XRef       // command is a cross reference (todo, bug, test, xrefitem).
};

struct DocCmdMap
{
  DocCmdMap(DocCmdFunc h,CommandSpacing s) : handler(h), spacing(s) {}
  DocCmdFunc handler;
  CommandSpacing spacing;
};

// map of command to handler function
static const std::map< std::string, DocCmdMap > docCmdMap =
{
  // command name      handler function           command spacing
  { "addindex",        { &handleAddIndex,         CommandSpacing::Invisible }},
  { "addtogroup",      { &handleAddToGroup,       CommandSpacing::Invisible }},
  { "anchor",          { &handleAnchor,           CommandSpacing::Invisible }},
  { "arg",             { 0,                       CommandSpacing::Block     }},
  { "attention",       { 0,                       CommandSpacing::Block     }},
  { "author",          { 0,                       CommandSpacing::Block     }},
  { "authors",         { 0,                       CommandSpacing::Block     }},
  { "brief",           { &handleBrief,            CommandSpacing::Invisible }},
  { "bug",             { &handleBug,              CommandSpacing::XRef      }},
  { "callergraph",     { &handleCallergraph,      CommandSpacing::Invisible }},
  { "callgraph",       { &handleCallgraph,        CommandSpacing::Invisible }},
  { "category",        { &handleCategory,         CommandSpacing::Invisible }},
  { "cite",            { &handleCite,             CommandSpacing::Inline    }},
  { "class",           { &handleClass,            CommandSpacing::Invisible }},
  { "code",            { &handleFormatBlock,      CommandSpacing::Block     }},
  { "concept",         { &handleConcept,          CommandSpacing::Invisible }},
  { "copybrief",       { &handleCopyBrief,        CommandSpacing::Invisible }},
  { "copydetails",     { &handleCopyDetails,      CommandSpacing::Block     }},
  { "copydoc",         { &handleCopyDoc,          CommandSpacing::Block     }},
  { "copyright",       { 0,                       CommandSpacing::Block     }},
  { "date",            { 0,                       CommandSpacing::Block     }},
  { "def",             { &handleDef,              CommandSpacing::Invisible }},
  { "defgroup",        { &handleDefGroup,         CommandSpacing::Invisible }},
  { "deprecated",      { &handleDeprecated,       CommandSpacing::XRef      }},
  { "details",         { &handleDetails,          CommandSpacing::Block     }},
  { "dir",             { &handleDir,              CommandSpacing::Invisible }},
  { "docbookinclude",  { 0,                       CommandSpacing::Inline    }},
  { "docbookonly",     { &handleFormatBlock,      CommandSpacing::Invisible }},
  { "dot",             { &handleFormatBlock,      CommandSpacing::Block     }},
  { "dotfile",         { 0,                       CommandSpacing::Block     }},
  { "else",            { &handleElse,             CommandSpacing::Inline    }},
  { "elseif",          { &handleElseIf,           CommandSpacing::Inline    }},
  { "endif",           { &handleEndIf,            CommandSpacing::Inline    }},
  { "endparblock",     { &handleEndParBlock,      CommandSpacing::Block     }},
  { "enum",            { &handleEnum,             CommandSpacing::Invisible }},
  { "example",         { &handleExample,          CommandSpacing::Invisible }},
  { "exception",       { 0,                       CommandSpacing::Block     }},
  { "extends",         { &handleExtends,          CommandSpacing::Invisible }},
  { "file",            { &handleFile,             CommandSpacing::Invisible }},
  { "fn",              { &handleFn,               CommandSpacing::Invisible }},
  { "headerfile",      { &handleHeaderFile,       CommandSpacing::Invisible }},
  { "hidecallergraph", { &handleHideCallergraph,  CommandSpacing::Invisible }},
  { "hidecallgraph",   { &handleHideCallgraph,    CommandSpacing::Invisible }},
  { "hideinitializer", { &handleHideInitializer,  CommandSpacing::Invisible }},
  { "hiderefby",       { &handleHideReferencedByRelation, CommandSpacing::Invisible }},
  { "hiderefs",        { &handleHideReferencesRelation,   CommandSpacing::Invisible }},
  { "htmlinclude",     { 0,                       CommandSpacing::Inline    }},
  { "htmlonly",        { &handleFormatBlock,      CommandSpacing::Invisible }},
  { "idlexcept",       { &handleIdlException,     CommandSpacing::Invisible }},
  { "if",              { &handleIf,               CommandSpacing::Inline    }},
  { "ifnot",           { &handleIfNot,            CommandSpacing::Inline    }},
  { "image",           { &handleImage,            CommandSpacing::Block     }},
  { "implements",      { &handleExtends,          CommandSpacing::Invisible }},
  { "include",         { 0,                       CommandSpacing::Block     }},
  { "includelineno",   { 0,                       CommandSpacing::Block     }},
  { "ingroup",         { &handleIngroup,          CommandSpacing::Invisible }},
  { "inherit",         { &handleInherit,          CommandSpacing::Invisible }},
  { "interface",       { &handleInterface,        CommandSpacing::Invisible }},
  { "internal",        { &handleInternal,         CommandSpacing::Block     }},
  { "invariant",       { 0,                       CommandSpacing::Block     }},
  { "latexinclude",    { 0,                       CommandSpacing::Inline    }},
  { "latexonly",       { &handleFormatBlock,      CommandSpacing::Invisible }},
  { "li",              { 0,                       CommandSpacing::Block     }},
  { "line",            { 0,                       CommandSpacing::Invisible }},
  { "mainpage",        { &handleMainpage,         CommandSpacing::Invisible }},
  { "maninclude",      { 0,                       CommandSpacing::Inline    }},
  { "manonly",         { &handleFormatBlock,      CommandSpacing::Invisible }},
  { "memberof",        { &handleMemberOf,         CommandSpacing::Invisible }},
  { "msc",             { &handleFormatBlock,      CommandSpacing::Block     }},
  { "name",            { &handleName,             CommandSpacing::Invisible }},
  { "namespace",       { &handleNamespace,        CommandSpacing::Invisible }},
  { "noop",            { &handleNoop,             CommandSpacing::Invisible }},
  { "nosubgrouping",   { &handleNoSubGrouping,    CommandSpacing::Invisible }},
  { "note",            { 0,                       CommandSpacing::Block     }},
  { "overload",        { &handleOverload,         CommandSpacing::Invisible }},
  { "package",         { &handlePackage,          CommandSpacing::Invisible }},
  { "page",            { &handlePage,             CommandSpacing::Invisible }},
  { "par",             { 0,                       CommandSpacing::Block     }},
  { "paragraph",       { &handleSection,          CommandSpacing::Block     }},
  { "param",           { &handleParam,            CommandSpacing::Block     }},
  { "parblock",        { &handleParBlock,         CommandSpacing::Block     }},
  { "post",            { 0,                       CommandSpacing::Block     }},
  { "pre",             { 0,                       CommandSpacing::Block     }},
  { "private",         { &handlePrivate,          CommandSpacing::Invisible }},
  { "privatesection",  { &handlePrivateSection,   CommandSpacing::Invisible }},
  { "property",        { &handleFn,               CommandSpacing::Invisible }},
  { "protected",       { &handleProtected,        CommandSpacing::Invisible }},
  { "protectedsection",{ &handleProtectedSection, CommandSpacing::Invisible }},
  { "protocol",        { &handleProtocol,         CommandSpacing::Invisible }},
  { "public",          { &handlePublic,           CommandSpacing::Invisible }},
  { "publicsection",   { &handlePublicSection,    CommandSpacing::Invisible }},
  { "pure",            { &handlePure,             CommandSpacing::Invisible }},
  { "raisewarning",    { &handleRaiseWarning,     CommandSpacing::Invisible }},
  { "refitem",         { &handleRefItem,          CommandSpacing::Inline    }},
  { "related",         { &handleRelated,          CommandSpacing::Invisible }},
  { "relatedalso",     { &handleRelatedAlso,      CommandSpacing::Invisible }},
  { "relates",         { &handleRelated,          CommandSpacing::Invisible }},
  { "relatesalso",     { &handleRelatedAlso,      CommandSpacing::Invisible }},
  { "remark",          { 0,                       CommandSpacing::Block     }},
  { "remarks",         { 0,                       CommandSpacing::Block     }},
  { "result",          { 0,                       CommandSpacing::Block     }},
  { "return",          { 0,                       CommandSpacing::Block     }},
  { "returns",         { 0,                       CommandSpacing::Block     }},
  { "retval",          { &handleRetval,           CommandSpacing::Block     }},
  { "rtfinclude",      { 0,                       CommandSpacing::Inline    }},
  { "rtfonly",         { &handleFormatBlock,      CommandSpacing::Invisible }},
  { "sa",              { 0,                       CommandSpacing::Block     }},
  { "section",         { &handleSection,          CommandSpacing::Block     }},
  { "see",             { 0,                       CommandSpacing::Block     }},
  { "short",           { &handleBrief,            CommandSpacing::Invisible }},
  { "showinitializer", { &handleShowInitializer,  CommandSpacing::Invisible }},
  { "showrefby",       { &handleReferencedByRelation,     CommandSpacing::Invisible }},
  { "showrefs",        { &handleReferencesRelation,       CommandSpacing::Invisible }},
  { "since",           { 0,                       CommandSpacing::Block     }},
  { "snippet",         { 0,                       CommandSpacing::Block     }},
  { "snippetlineno",   { 0,                       CommandSpacing::Block     }},
  { "startuml",        { &handleFormatBlock,      CommandSpacing::Block     }},
  { "static",          { &handleStatic,           CommandSpacing::Invisible }},
  { "struct",          { &handleStruct,           CommandSpacing::Invisible }},
  { "subpage",         { &handleSubpage,          CommandSpacing::Inline    }},
  { "subsection",      { &handleSection,          CommandSpacing::Block     }},
  { "subsubsection",   { &handleSection,          CommandSpacing::Block     }},
  { "tableofcontents", { &handleToc,              CommandSpacing::Invisible }},
  { "test",            { &handleTest,             CommandSpacing::XRef      }},
  { "throw",           { 0,                       CommandSpacing::Block     }},
  { "throws",          { 0,                       CommandSpacing::Block     }},
  { "todo",            { &handleTodo,             CommandSpacing::XRef      }},
  { "tparam",          { 0,                       CommandSpacing::Block     }},
  { "typedef",         { &handleFn,               CommandSpacing::Invisible }},
  { "union",           { &handleUnion,            CommandSpacing::Invisible }},
  { "until",           { 0,                       CommandSpacing::Block     }},
  { "var",             { &handleFn,               CommandSpacing::Invisible }},
  { "verbatim",        { &handleFormatBlock,      CommandSpacing::Block     }},
  { "verbinclude",     { 0,                       CommandSpacing::Inline    }},
  { "version",         { 0,                       CommandSpacing::Block     }},
  { "warning",         { 0,                       CommandSpacing::Block     }},
  { "weakgroup",       { &handleWeakGroup,        CommandSpacing::Invisible }},
  { "xmlinclude",      { 0,                       CommandSpacing::Inline    }},
  { "xmlonly",         { &handleFormatBlock,      CommandSpacing::Invisible }},
  { "xrefitem",        { &handleXRefItem,         CommandSpacing::XRef      }},
  { "iliteral",        { &handleFormatBlock,      CommandSpacing::Inline    }},
};

#define YY_NO_INPUT 1
#define YY_NO_UNISTD_H 1
#define YY_NEVER_INTERACTIVE 1


enum XRefKind
{
  XRef_Item,
  XRef_Todo,
  XRef_Test,
  XRef_Bug,
  XRef_Deprecated,
  XRef_None
};

enum OutputContext
{
  OutputDoc,
  OutputBrief,
  OutputXRef,
  OutputInbody
};

enum GuardType
{
  Guard_If,
  Guard_IfNot,
  Guard_Skip
};

class GuardedSection
{
  public:
    GuardedSection(bool enabled,bool parentVisible)
      : m_enabled(enabled),m_parentVisible(parentVisible) {}
    bool isEnabled() const { return m_enabled; }
    bool parentVisible() const { return m_parentVisible; }

  private:
    bool m_enabled;
    bool m_parentVisible;
};

/* -----------------------------------------------------------------
 *
 *        statics
 */

struct commentscanYY_state
{
  OutlineParserInterface *langParser = 0;  // the language parser that is calling us
  QCString         inputString;            // input string
  QCString         currentCmd;             // the command used
  int              inputPosition = 0;      // read pointer
  QCString         fileName;               // file name that is read from
  int              lineNr = 0;             // line number in the input
  bool             inBody = FALSE;         // was the comment found inside the body of a function?
  OutputContext    inContext;              // are we inside the brief, details or xref part
  bool             briefEndsAtDot = FALSE; // does the brief description stop at a dot?
  QCString         formulaText;            // Running text of a formula
  QCString         formulaEnv;             // environment name
  int              formulaNewLines = 0;    // amount of new lines in the formula
  QCString        *pOutputString = 0;      // pointer to string to which the output is appended.
  QCString         outputXRef;               // temp argument of todo/test/../xrefitem commands
  QCString         blockName;                // preformatted block name (e.g. verbatim, latexonly,...)
  XRefKind         xrefKind    = XRef_Item;  // kind of cross-reference command
  XRefKind         newXRefKind = XRef_Item;  //
  GuardType        guardType = Guard_If;     // kind of guards for conditional section
  bool             enabledSectionFound = FALSE;
  QCString         functionProto;          // function prototype
  std::stack<GuardedSection> guards;             // tracks nested conditional sections (if,ifnot,..)
  Entry           *current = 0;              // working entry

  bool             needNewEntry = FALSE;

  QCString         sectionLabel;
  QCString         sectionTitle;
  int              sectionLevel = 0;
  QCString         xrefItemKey;
  QCString         newXRefItemKey;
  QCString         xrefItemTitle;
  QCString         xrefListTitle;
  Protection       protection = Public;

  bool             xrefAppendFlag = FALSE;
  bool             inGroupParamFound = FALSE;
  int              braceCount = 0;
  bool             insidePre = FALSE;
  bool             parseMore = FALSE;
  int              condCount = 0;

  int              commentCount = 0;
  QCString         spaceBeforeCmd;
  QCString         spaceBeforeIf;
  QCString         copyDocArg;

  QCString         guardExpr;
  int              roundCount = 0;
  int              HTMLDetails = 0;

  bool             insideParBlock = FALSE;
  bool             inInternalDocs = FALSE;
  int              prevPosition = 0;
  DocGroup         docGroup;
  bool             markdownSupport = TRUE;

  QCString         raiseWarning;
};


static std::mutex g_sectionMutex;
static std::mutex g_formulaMutex;
static std::mutex g_citeMutex;

//-----------------------------------------------------------------------------

static QCString stripQuotes(const char *s);
static bool getDocSectionName(int s);
static SectionType sectionLevelToType(int level);
static void stripTrailingWhiteSpace(QCString &s);

static void initParser(yyscan_t yyscanner);
static bool makeStructuralIndicator(yyscan_t yyscanner,Entry::Sections s);
static void lineCount(yyscan_t yyscanner);
static void addXRefItem(yyscan_t yyscanner,
                        const QCString &listName,const QCString &itemTitle,
                        const QCString &listTitle,bool append);
static QCString addFormula(yyscan_t yyscanner);
static void checkFormula(yyscan_t yyscanner);
static void addSection(yyscan_t yyscanner);
static inline void setOutput(yyscan_t yyscanner,OutputContext ctx);
static void addAnchor(yyscan_t yyscanner,const QCString &anchor);
static inline void addOutput(yyscan_t yyscanner,const char *s);
static inline void addOutput(yyscan_t yyscanner,const QCString &s);
static inline void addOutput(yyscan_t yyscanner,char c);
static void endBrief(yyscan_t yyscanner,bool addToOutput=TRUE);
static void handleGuard(yyscan_t yyscanner,const QCString &expr);
static yy_size_t yyread(yyscan_t yyscanner,char *buf,yy_size_t max_size);
static void addCite(yyscan_t yyscanner);
static void addIline(yyscan_t yyscanner,int lineNr);

#define unput_string(yytext,yyleng) do { for (int i=(int)yyleng-1;i>=0;i--) unput(yytext[i]); } while(0)

//-----------------------------------------------------------------------------

#undef        YY_INPUT
#define        YY_INPUT(buf,result,max_size) result=yyread(yyscanner,buf,max_size);

// otherwise the filename would be the name of the converted file (*.cpp instead of *.l)
static inline const char *getLexerFILE() {return __FILE__;}
#include "doxygen_lex.h"

%}

       /* start command character */
CMD          ("\\"|"@")
XREFCMD   {CMD}("bug"|"deprecated"|"test"|"todo"|"xrefitem")
PRE       [pP][rR][eE]
TABLE          [tT][aA][bB][lL][eE]
P          [pP]
UL        [uU][lL]
OL          [oO][lL]
DL          [dD][lL]
IMG       [iI][mM][gG]
HR        [hH][rR]
PARA      [pP][aA][rR][aA]
CODE      [cC][oO][dD][eE]
CAPTION   [cC][aA][pP][tT][iI][oO][nN]
CENTER    [cC][eE][nN][tT][eE][rR]
DIV       [dD][iI][vV]
DETAILS   [dD][eE][tT][aA][iI][lL][sS]
DETAILEDHTML {CENTER}|{DIV}|{PRE}|{UL}|{TABLE}|{OL}|{DL}|{P}|[Hh][1-6]|{IMG}|{HR}|{PARA}
DETAILEDHTMLOPT {CODE}
SUMMARY   [sS][uU][mM][mM][aA][rR][yY]
REMARKS   [rR][eE][mM][aA][rR][kK][sS]
BN        [ \t\n\r]
BL        [ \t\r]*"\n"
B         [ \t]
Bopt      {B}*
BS        ^(({B}*"/""/")?)(({B}*"*"+)?){B}*
ATTR      ({B}+[^>\n]*)?
DOCNL     "\n"|"\\ilinebr"
LC        "\\"{B}*"\n"
NW          [^a-z_A-Z0-9]
FILESCHAR [a-z_A-Z0-9\x80-\xFF\\:\\\/\-\+@&#]
FILEECHAR [a-z_A-Z0-9\x80-\xFF\-\+@&#]
FILE      ({FILESCHAR}*{FILEECHAR}+("."{FILESCHAR}*{FILEECHAR}+)*)|("\""[^\n\"]*"\"")
ID        [$a-z_A-Z\x80-\xFF][$a-z_A-Z0-9\x80-\xFF]*
LABELID   [a-z_A-Z\x80-\xFF][a-z_A-Z0-9\x80-\xFF\-]*
CITESCHAR [a-z_A-Z0-9\x80-\xFF\-\?]
CITEECHAR [a-z_A-Z0-9\x80-\xFF\-\+:\/\?]*
CITEID    {CITESCHAR}{CITEECHAR}*("."{CITESCHAR}{CITEECHAR}*)*|"\""{CITESCHAR}{CITEECHAR}*("."{CITESCHAR}{CITEECHAR}*)*"\""
SCOPEID   {ID}({ID}*{BN}*"::"{BN}*)*({ID}?)
SCOPENAME "$"?(({ID}?{BN}*("::"|"."){BN}*)*)((~{BN}*)?{ID})
TMPLSPEC  "<"{BN}*[^>]+{BN}*">"
MAILADDR  ("mailto:")?[a-z_A-Z0-9\x80-\xff.+-]+"@"[a-z_A-Z0-9\x80-\xff-]+("."[a-z_A-Z0-9\x80-\xff\-]+)+[a-z_A-Z0-9\x80-\xff\-]+
RCSTAG    "$"{ID}":"[^\n$]+"$"

  // C start comment 
CCS   "/\*"
  // C end comment
CCE   "*\/"
  // Cpp comment 
CPPC  "/\/"

  // end of section title with asterisk
STAopt [^\n@\\*]*
  // end of section title without asterisk
STopt  [^\n@\\]*

%option noyywrap

  /* comment parsing states. */
%x      Comment
%x      PageDocArg1
%x      PageDocArg2
%x      RelatesParam1
%x      ClassDocArg1
%x      ClassDocArg2
%x      ClassDocArg3
%x      CategoryDocArg1
%x      XRefItemParam1
%x      XRefItemParam2
%x      XRefItemParam3
%x      FileDocArg1
%x      ParamArg1
%x      EnumDocArg1
%x      NameSpaceDocArg1
%x      PackageDocArg1
%x      ConceptDocArg1
%x      GroupDocArg1
%x      GroupDocArg2
%x      SectionLabel
%x      SectionTitle
%x      SubpageLabel
%x      SubpageTitle
%x      FormatBlock
%x      LineParam
%x      GuardParam
%x      GuardParamEnd
%x      SkipGuardedSection
%x      SkipInternal
%x      NameParam
%x      InGroupParam
%x      FnParam
%x      OverloadParam
%x      InheritParam
%x      ExtendsParam
%x      ReadFormulaShort
%x      ReadFormulaRound
%x      ReadFormulaLong
%x      AnchorLabel
%x      HtmlComment
%x      SkipLang
%x      CiteLabel
%x      CopyDoc
%x      GuardExpr
%x      CdataSection
%x      Noop
%x      RaiseWarning

%%

  /* What can happen in while parsing a comment block:
   *   commands (e.g. @page, or \page)
   *   escaped commands (e.g. @@page or \\page).
   *   formulas (e.g. \f$...\f$ \f[...\f] \f{...\f} \f(...\f) )
   *   directories (e.g. \doxygen\src\)
   *   autolist end. (e.g. a dot on an otherwise empty line)
   *   newlines.
   *   end of brief description due to blank line.
   *   end of brief description due to some command (@command, or <command>).
   *   words and whitespace and other characters (#,?!, etc).
   *   grouping commands (e.g. @{ and @})
   *   language switch (e.g. \~english or \~).
   *   mail address (e.g. doxygen@gmail.com).
   *   quoted text, such as "foo@bar"
   *   XML commands, <summary></summary><remarks></remarks>
   */

<Comment>{CMD}{CMD}[a-z_A-Z]+{B}*       { // escaped command
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>{CMD}{CMD}"~"[a-z_A-Z]*        { // escaped command
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>{MAILADDR}                     { // mail address
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>"\""[^"\n]*"\""                { // quoted text
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>("\\"[a-z_A-Z]+)+"\\"          { // directory (or chain of commands!)
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>"<"{DETAILEDHTML}{ATTR}">"     { // HTML command that ends a brief description
                                          setOutput(yyscanner,OutputDoc);
                                          // continue with the same input
                                          REJECT;
                                        }
<Comment>"<"{DETAILEDHTMLOPT}{ATTR}">"  { // HTML command that ends a brief description
                                          if (yyextra->current->lang==SrcLangExt_CSharp)
                                          {
                                            setOutput(yyscanner,OutputDoc);
                                          }
                                          // continue with the same input
                                          REJECT;
                                        }
<Comment>"<"{DETAILS}{ATTR}">"          { // start of a HTML style details description
                                          yyextra->HTMLDetails++;
                                          setOutput(yyscanner,OutputDoc);
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>"</"{DETAILS}">"               { // end of a HTML style details description
                                          if (yyextra->HTMLDetails) yyextra->HTMLDetails--;
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>"<"{SUMMARY}">"                { // start of a .NET XML style brief description
                                          if (!yyextra->HTMLDetails) setOutput(yyscanner,OutputBrief);
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>"<"{REMARKS}">"                { // start of a .NET XML style detailed description
                                          setOutput(yyscanner,OutputDoc);
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>"</"{SUMMARY}">"               { // start of a .NET XML style detailed description
                                          addOutput(yyscanner,yytext);
                                          if (!yyextra->HTMLDetails) setOutput(yyscanner,OutputDoc);
                                        }
<Comment>"</"{REMARKS}">"               { // end of a brief or detailed description
                                          setOutput(yyscanner,OutputDoc);
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>"<"{CAPTION}{ATTR}">"          {
                                          QCString tag(yytext);
                                          int s=tag.find("id=");
                                          if (s!=-1) // command has id attribute
                                          {
                                            char c=tag[s+3];
                                            if (c=='\'' || c=='"') // valid start
                                            {
                                              int e=tag.find(c,s+4);
                                              if (e!=-1) // found matching end
                                              {
                                                QCString id=tag.mid(s+4,e-s-4); // extract id
                                                addAnchor(yyscanner,id);
                                              }
                                            }
                                          }
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>"<"{PRE}{ATTR}">"              {
                                          yyextra->insidePre=TRUE;
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>"</"{PRE}">"                   {
                                          yyextra->insidePre=FALSE;
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>{RCSTAG}                       { // RCS tag which end a brief description
                                          setOutput(yyscanner,OutputDoc);
                                          REJECT;
                                        }
<Comment>"<!--"                         {
                                          BEGIN(HtmlComment);
                                        }
<Comment>"<!\[CDATA\["                  {
                                          BEGIN(CdataSection);
                                        }
<Comment>{B}*{CMD}"endinternal"{B}*     {
                                          addOutput(yyscanner," \\endinternal ");
                                          if (!yyextra->inInternalDocs)
                                              warn(yyextra->fileName,yyextra->lineNr,
                                               "found \\endinternal without matching \\internal"
                                              );
                                          yyextra->inInternalDocs = FALSE;
                                        }
<Comment>{B}*"\\ilinebr"{B}*            { // preserve spacing around \\ilinebr
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>{B}*{CMD}[a-z_A-Z]+"{"[a-zA-Z_,:0-9\. ]*"}"{B}*  |
<Comment>{B}*{CMD}[a-z_A-Z]+{B}*        { // potentially interesting command
                                          // the {B}* in the front was added for bug620924
                                          QCString fullMatch = QCString(yytext);
                                          int idx = fullMatch.find('{');
                                          /* handle `\f{` and `@f{` as special cases */
                                          if ((idx > 1) && (yytext[idx-1] == 'f') && (yytext[idx-2] == '\\' || yytext[idx-2] =='@')) REJECT;
                                          int idxEnd = fullMatch.find("}",idx+1);
                                          QCString cmdName;
                                          StringVector optList;
                                          if (idx == -1) // no options
                                          {
                                            cmdName = QCString(yytext).stripWhiteSpace().mid(1); // to remove {CMD}
                                          }
                                          else // options present
                                          {
                                            cmdName = fullMatch.left(idx).stripWhiteSpace().mid(1); // to remove {CMD}
                                            QCString optStr = fullMatch.mid(idx+1,idxEnd-idx-1).stripWhiteSpace();
                                            optList = split(optStr.str(),",");
                                          }
                                          auto it = docCmdMap.find(cmdName.str());
                                          //printf("lookup command '%s' found=%d\n",qPrint(cmdName),it!=docCmdMap.end());
                                          if (it!=docCmdMap.end()) // special action is required
                                          {
                                            int i=0;
                                            while (yytext[i]==' ' || yytext[i]=='\t') i++;
                                            yyextra->spaceBeforeCmd = QCString(yytext).left(i);
                                            CommandSpacing spacing = it->second.spacing;
                                            if ((spacing==CommandSpacing::Block || spacing==CommandSpacing::XRef) &&
                                                !(yyextra->inContext==OutputXRef && cmdName=="parblock"))
                                            {
                                              yyextra->briefEndsAtDot=FALSE;
                                              bool insideXRef = yyextra->inContext==OutputXRef && spacing==CommandSpacing::XRef;
                                              // this command forces the end of brief description
                                              setOutput(yyscanner,insideXRef ? OutputXRef : OutputDoc);
                                            }
                                            //if (i>0) addOutput(yyscanner,QCString(yytext).left(i)); // removed for bug 689341
                                            if (it->second.handler && it->second.handler(yyscanner, cmdName, optList))
                                            {
                                              // implicit split of the comment block into two
                                              // entries. Restart the next block at the start
                                              // of this command.
                                              yyextra->parseMore=TRUE;

                                              // yuk, this is probably not very portable across lex implementations,
                                              // but we need to know the position in the input buffer where this
                                              // rule matched.
                                              // for flex 2.5.33+ we should use YY_CURRENT_BUFFER_LVALUE
#if YY_FLEX_MAJOR_VERSION>=2 && (YY_FLEX_MINOR_VERSION>5 || (YY_FLEX_MINOR_VERSION==5 && YY_FLEX_SUBMINOR_VERSION>=33))
                                              yyextra->inputPosition=yyextra->prevPosition + (int)(yy_bp - YY_CURRENT_BUFFER_LVALUE->yy_ch_buf);
#else
                                              yyextra->inputPosition=yyextra->prevPosition + (int)(yy_bp - yy_current_buffer->yy_ch_buf);
#endif
                                              yyterminate();
                                            }
                                            else if (it->second.handler==0)
                                            {
                                              // command without handler, to be processed
                                              // later by parsedoc.cpp
                                              addOutput(yyscanner,yytext);
                                            }
                                          }
                                          else // command not relevant
                                          {
                                            addOutput(yyscanner,yytext);
                                          }
                                        }
<Comment>{B}*({CMD}{CMD})"f"[$\[{]      { // escaped formula command
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>{B}*{CMD}"~"[a-z_A-Z-]*        { // language switch command
                                          QCString langId = QCString(yytext).stripWhiteSpace().mid(2);
                                          if (!langId.isEmpty() &&
                                              qstricmp(Config_getEnumAsString(OUTPUT_LANGUAGE).data(),langId.data())!=0)
                                          { // enable language specific section
                                            BEGIN(SkipLang);
                                          }
                                        }
<Comment>{B}*{CMD}"f{"[^}\n]+"}"("{"?)  { // start of a formula with custom environment
                                          setOutput(yyscanner,OutputDoc);
                                          yyextra->formulaText="\\begin";
                                          yyextra->formulaEnv=QCString(yytext).stripWhiteSpace().mid(2);
                                          if (yyextra->formulaEnv.at(yyextra->formulaEnv.length()-1)=='{')
                                          {
                                            // remove trailing open brace
                                            yyextra->formulaEnv=yyextra->formulaEnv.left(yyextra->formulaEnv.length()-1);
                                          }
                                          yyextra->formulaText+=yyextra->formulaEnv;
                                          yyextra->formulaNewLines=0;
                                          BEGIN(ReadFormulaLong);
                                        }
<Comment>{B}*{CMD}"f$"                  { // start of a inline formula
                                          yyextra->formulaText="$";
                                          yyextra->formulaNewLines=0;
                                          BEGIN(ReadFormulaShort);
                                        }
<Comment>{B}*{CMD}"f("                  { // start of a inline formula
                                          yyextra->formulaText="";
                                          yyextra->formulaNewLines=0;
                                          BEGIN(ReadFormulaRound);
                                        }
<Comment>{B}*{CMD}"f["                  { // start of a block formula
                                          setOutput(yyscanner,OutputDoc);
                                          yyextra->formulaText="\\[";
                                          yyextra->formulaNewLines=0;
                                          BEGIN(ReadFormulaLong);
                                        }
<Comment>{B}*{CMD}"{"                   { // begin of a group
                                          //yyextra->langParser->handleGroupStartCommand(yyextra->memberGroupHeader);
                                          yyextra->docGroup.open(yyextra->current,yyextra->fileName,yyextra->lineNr);
                                        }
<Comment>{B}*{CMD}"}"                   { // end of a group
                                          //yyextra->langParser->handleGroupEndCommand();
                                          yyextra->docGroup.close(yyextra->current,yyextra->fileName,yyextra->lineNr,TRUE);
                                          yyextra->docGroup.clearHeader();
                                          yyextra->parseMore=TRUE;
                                          yyextra->needNewEntry = TRUE;
#if YY_FLEX_MAJOR_VERSION>=2 && (YY_FLEX_MINOR_VERSION>5 || (YY_FLEX_MINOR_VERSION==5 && YY_FLEX_SUBMINOR_VERSION>=33))
                                          yyextra->inputPosition=yyextra->prevPosition + (int)(yy_bp - YY_CURRENT_BUFFER_LVALUE->yy_ch_buf) + (int)strlen(yytext);
#else
                                          yyextra->inputPosition=yyextra->prevPosition + (int)(yy_bp - yy_current_buffer->yy_ch_buf) + (int)strlen(yytext);
#endif
                                          yyterminate();
                                        }
<Comment>{B}*{CMD}[$@\\&~<>#%]          { // escaped character
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>[a-z_A-Z]+                     { // normal word
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>^{B}*"."{Bopt}/\n                { // explicit end autolist: e.g "  ."
                                            addOutput(yyscanner,yytext);
                                        }
<Comment>^{B}*[1-9][0-9]*"."{B}+        |
<Comment>^{B}*[*+]{B}+                  { // start of autolist
                                          if (!yyextra->markdownSupport)
                                          {
                                            REJECT;
                                          }
                                          else
                                          {
                                            if (yyextra->inContext!=OutputXRef)
                                            {
                                              yyextra->briefEndsAtDot=FALSE;
                                              setOutput(yyscanner,OutputDoc);
                                            }
                                            addOutput(yyscanner,yytext);
                                          }
                                          }
<Comment>^{B}*"-"{B}+                        { // start of autolist
                                          if (yyextra->inContext!=OutputXRef)
                                          {
                                            yyextra->briefEndsAtDot=FALSE;
                                            setOutput(yyscanner,OutputDoc);
                                          }
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>^{B}*([\-:|]{B}*)*("--"|"---")({B}*[\-:|])*{Bopt}/\n { // horizontal line (dashed)
                                            addOutput(yyscanner,yytext);
                                        }
<Comment>{CMD}"---"                     { // escaped mdash
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>{CMD}"--"                      { // escaped mdash
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>"---"                          { // mdash
                                          addOutput(yyscanner,yyextra->insidePre || yyextra->markdownSupport ? yytext : "&mdash;");
                                        }
<Comment>"--"                           { // ndash
                                          addOutput(yyscanner,yyextra->insidePre || yyextra->markdownSupport ? yytext : "&ndash;");
                                        }
<Comment>"-#"{B}+                       { // numbered item
                                          if (yyextra->inContext!=OutputXRef)
                                          {
                                            yyextra->briefEndsAtDot=FALSE;
                                            setOutput(yyscanner,OutputDoc);
                                          }
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>("."+)[a-z_A-Z0-9\)]           { // . at start or in the middle of a word, or ellipsis
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>".\\"[ \t]                     { // . with escaped space.
                                          addOutput(yyscanner,yytext[0]);
                                          addOutput(yyscanner,yytext[2]);
                                        }
<Comment>".,"                           { // . with comma such as "e.g.,"
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>"...\\"[ \t]                   { // ellipsis with escaped space.
                                          addOutput(yyscanner,"... ");
                                        }
<Comment>"..."/[^\.]                    { // ellipsis
                                          addOutput(yyscanner,"...");
                                        }
<Comment>".."[\.]?/[^ \t\n]             { // internal ellipsis
                                          addOutput(yyscanner,yytext);
                                        }
<Comment>(\n|\\ilinebr)({B}*(\n|\\ilinebr))+ { // at least one blank line (or blank line command)
                                          if (yyextra->inContext==OutputXRef)
                                          {
                                            // see bug 613024, we need to put the newlines after ending the XRef section.
                                            if (!yyextra->insideParBlock) setOutput(yyscanner,OutputDoc);
                                            yy_size_t i;
                                            for (i=0;i<(yy_size_t)yyleng;)
                                            {
                                              if (yytext[i]=='\n') addOutput(yyscanner,'\n'),i++;
                                              else if (strcmp(yytext+i,"\\ilinebr")==0) addOutput(yyscanner,"\\ilinebr"),i+=8;
                                              else i++;
                                            }
                                          }
                                          else if (yyextra->inContext!=OutputBrief)
                                          {
                                            yy_size_t i;
                                            for (i=0;i<(yy_size_t)yyleng;)
                                            {
                                              if (yytext[i]=='\n') addOutput(yyscanner,'\n'),i++;
                                              else if (strcmp(yytext+i,"\\ilinebr")==0) addOutput(yyscanner,"\\ilinebr"),i+=8;
                                              else i++;
                                            }
                                            setOutput(yyscanner,OutputDoc);
                                          }
                                          else // yyextra->inContext==OutputBrief
                                          { // only go to the detailed description if we have
                                            // found some brief description and not just whitespace
                                            endBrief(yyscanner,TRUE);
                                          }
                                          lineCount(yyscanner);
                                        }
<Comment>"."                            { // potential end of a JavaDoc style comment
                                          addOutput(yyscanner,*yytext);
                                          if (yyextra->briefEndsAtDot)
                                          {
                                            setOutput(yyscanner,OutputDoc);
                                            yyextra->briefEndsAtDot=FALSE;
                                          }
                                        }
<Comment>{DOCNL}                             { // newline
                                          addOutput(yyscanner,yytext);
                                          if (*yytext == '\n') yyextra->lineNr++;
                                        }
<Comment>.                              { // catch-all for anything else
                                          addOutput(yyscanner,*yytext);
                                        }


 /* --------------   Rules for handling HTML comments ----------- */

<HtmlComment>"--"[!]?">"{B}*            { BEGIN( Comment ); }
<HtmlComment>{DOCNL}                    {
                                          if (*yytext=='\n')
                                          {
                                            addOutput(yyscanner,*yytext);
                                            yyextra->lineNr++;
                                          }
                                        }
<HtmlComment>[^\\\n\-]+                 { // ignore unimportant characters
                                        }
<HtmlComment>.                          { // ignore every else
                                        }

<CdataSection>"\]\]>"                   {
                                          BEGIN( Comment );
                                        }
<CdataSection>{DOCNL}                   {
                                          addOutput(yyscanner,'\n');
                                          if (*yytext=='\n') yyextra->lineNr++;
                                        }
<CdataSection>[<>&]                     { // the special XML characters for iwhich the CDATA section is especially used
                                          addOutput(yyscanner,'\\');
                                          addOutput(yyscanner,*yytext);
                                        }
<CdataSection>[^\\\n\]<>&]+             {
                                          addOutput(yyscanner,yytext);
                                        }
<CdataSection>.                         {
                                          addOutput(yyscanner,*yytext);
                                        }

 /* --------------   Rules for handling formulas ---------------- */

<ReadFormulaShort>{CMD}"f$"             { // end of inline formula
                                          yyextra->formulaText+="$";
                                          addOutput(yyscanner," "+addFormula(yyscanner));
                                          BEGIN(Comment);
                                        }
<ReadFormulaRound>{CMD}"f)"             { // end of inline formula
                                          addOutput(yyscanner," "+addFormula(yyscanner));
                                          BEGIN(Comment);
                                        }
<ReadFormulaLong>{CMD}"f]"              { // end of block formula
                                          yyextra->formulaText+="\\]";
                                          addOutput(yyscanner," "+addFormula(yyscanner));
                                          BEGIN(Comment);
                                        }
<ReadFormulaLong>{CMD}"f}"              { // end of custom env formula
                                          yyextra->formulaText+="\\end";
                                          yyextra->formulaText+=yyextra->formulaEnv;
                                          addOutput(yyscanner," "+addFormula(yyscanner));
                                          BEGIN(Comment);
                                        }
<ReadFormulaLong,ReadFormulaShort,ReadFormulaRound>[^\\@\n]+ { // any non-special character
                                          yyextra->formulaText+=yytext;
                                        }
<ReadFormulaLong,ReadFormulaShort,ReadFormulaRound>\n    { // new line
                                          yyextra->formulaNewLines++;
                                          yyextra->formulaText+=*yytext;
                                          yyextra->lineNr++;
                                        }
<ReadFormulaLong,ReadFormulaShort,ReadFormulaRound>.     { // any other character
                                          yyextra->formulaText+=*yytext;
                                        }

  /* ------------ handle argument of enum command --------------- */

<EnumDocArg1>{SCOPEID}                  { // handle argument
                                          yyextra->current->name = yytext;
                                          BEGIN( Comment );
                                        }
<EnumDocArg1>{LC}                       { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<EnumDocArg1>{DOCNL}                    { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                               "missing argument after \\enum."
                                              );
                                          unput_string(yytext,yyleng);
                                          //addOutput(yyscanner,'\n');
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          BEGIN( Comment );
                                        }
<EnumDocArg1>.                          { // ignore other stuff
                                        }

  /* ------------ handle argument of namespace command --------------- */

<NameSpaceDocArg1>{SCOPENAME}           { // handle argument
                                          lineCount(yyscanner);
                                          yyextra->current->name = substitute(removeRedundantWhiteSpace(QCString(yytext)),QCString("."),QCString("::"));
                                          BEGIN( Comment );
                                        }
<NameSpaceDocArg1>{LC}                  { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<NameSpaceDocArg1>{DOCNL}               { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                               "missing argument after "
                                               "\\namespace."
                                              );
                                          unput_string(yytext,yyleng);
                                          //addOutput(yyscanner,'\n');
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          BEGIN( Comment );
                                        }
<NameSpaceDocArg1>.                     { // ignore other stuff
                                        }

  /* ------------ handle argument of package command --------------- */

<PackageDocArg1>{ID}("."{ID})*          { // handle argument
                                          yyextra->current->name = yytext;
                                          BEGIN( Comment );
                                        }
<PackageDocArg1>{LC}                    { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<PackageDocArg1>{DOCNL}                 { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                               "missing argument after "
                                               "\\package."
                                              );
                                          unput_string(yytext,yyleng);
                                          //addOutput(yyscanner,'\n');
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          BEGIN( Comment );
                                        }
<PackageDocArg1>.                       { // ignore other stuff
                                        }

  /* ------------ handle argument of concept command --------------- */

<ConceptDocArg1>{SCOPEID}               { // handle argument
                                          yyextra->current->name = yytext;
                                          BEGIN( Comment );
                                        }
<ConceptDocArg1>{LC}                    { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<ConceptDocArg1>{DOCNL}                 { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                               "missing argument after "
                                               "\\concept."
                                              );
                                          unput_string(yytext,yyleng);
                                          BEGIN( Comment );
                                        }
<ConceptDocArg1>.                       { // ignore other stuff
                                        }


  /* ------ handle argument of class/struct/union command --------------- */

<ClassDocArg1>{SCOPENAME}{TMPLSPEC}     {
                                          lineCount(yyscanner);
                                          yyextra->current->name = substitute(removeRedundantWhiteSpace(QCString(yytext)),".","::");
                                          BEGIN( ClassDocArg2 );
                                        }
<ClassDocArg1>{SCOPENAME}               { // first argument
                                          lineCount(yyscanner);
                                          yyextra->current->name = substitute(QCString(yytext),".","::");
                                          if (yyextra->current->section==Entry::PROTOCOLDOC_SEC)
                                          {
                                            yyextra->current->name+="-p";
                                          }
                                          // prepend outer scope name
                                          BEGIN( ClassDocArg2 );
                                        }
<CategoryDocArg1>{SCOPENAME}{B}*"("[^\)]+")" {
                                          lineCount(yyscanner);
                                          yyextra->current->name = substitute(QCString(yytext),".","::");
                                          BEGIN( ClassDocArg2 );
                                        }
<ClassDocArg1,CategoryDocArg1>{LC}      { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<ClassDocArg1,CategoryDocArg1>{DOCNL}   {
                                          warn(yyextra->fileName,yyextra->lineNr,
                                               "missing argument after "
                                               "'\\%s'.",qPrint(yyextra->currentCmd)
                                              );
                                          //addOutput(yyscanner,'\n');
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          unput_string(yytext,yyleng);
                                          BEGIN( Comment );
                                        }
<ClassDocArg1,CategoryDocArg1>.         { // ignore other stuff
                                        }

<ClassDocArg2>{DOCNL}                   {
                                          //addOutput(yyscanner,'\n');
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          unput_string(yytext,yyleng);
                                          BEGIN( Comment );
                                        }
<ClassDocArg2>{FILE}|"<>"               { // second argument; include file
                                          yyextra->current->includeFile = yytext;
                                          BEGIN( ClassDocArg3 );
                                        }
<ClassDocArg2>{LC}                      { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<ClassDocArg2>.                         { // ignore other stuff
                                        }

<ClassDocArg3>[<"]?{FILE}?[">]?         { // third argument; include file name
                                          yyextra->current->includeName = yytext;
                                          BEGIN( Comment );
                                        }
<ClassDocArg3>{LC}                      { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<ClassDocArg3>{DOCNL}                   {
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          unput_string(yytext,yyleng);
                                          BEGIN( Comment );
                                        }
<ClassDocArg3>.                         { // ignore other stuff
                                        }

  /* --------- handle arguments of {def,add,weak}group commands --------- */

<GroupDocArg1>{LABELID}(".html"?)       { // group name
                                           yyextra->current->name = yytext;
                                          //lastDefGroup.groupname = yytext;
                                          //lastDefGroup.pri = yyextra->current->groupingPri();
                                          // the .html stuff is for Qt compatibility
                                          if (yyextra->current->name.right(5)==".html")
                                          {
                                            yyextra->current->name=yyextra->current->name.left(yyextra->current->name.length()-5);
                                          }
                                          yyextra->current->type.resize(0);
                                          BEGIN(GroupDocArg2);
                                        }
<GroupDocArg1>"\\"{B}*"\n"              { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<GroupDocArg1>{DOCNL}                   { // missing argument!
                                          warn(yyextra->fileName,yyextra->lineNr,
                                               "missing group name after %s",
                                               yyextra->current->groupDocCmd()
                                              );
                                          //addOutput(yyscanner,'\n');
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          unput_string(yytext,yyleng);
                                          BEGIN( Comment );
                                        }
<GroupDocArg1>.                         { // ignore other stuff
                                        }
<GroupDocArg2>"\\"{B}*"\n"              { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<GroupDocArg2>[^\n\\]+                  { // title (stored in type)
                                          yyextra->current->type += yytext;
                                          yyextra->current->type = yyextra->current->type.stripWhiteSpace();
                                        }
<GroupDocArg2>{DOCNL}                   {
                                          if ( yyextra->current->groupDocType==Entry::GROUPDOC_NORMAL &&
                                               yyextra->current->type.isEmpty()
                                             ) // defgroup requires second argument
                                          {
                                              warn(yyextra->fileName,yyextra->lineNr,
                                                 "missing title after "
                                                 "\\defgroup %s", qPrint(yyextra->current->name)
                                                );
                                          }
                                          unput_string(yytext,yyleng);
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          //addOutput(yyscanner,'\n');
                                          BEGIN( Comment );
                                        }
<GroupDocArg2>.                         { // title (stored in type)
                                          yyextra->current->type += yytext;
                                          yyextra->current->type = yyextra->current->type.stripWhiteSpace();
                                        }

  /* --------- handle arguments of page/mainpage command ------------------- */

<PageDocArg1>{FILE}                     { // first argument; page name
                                          yyextra->current->name = stripQuotes(yytext);
                                          yyextra->current->args = "";
                                          BEGIN( PageDocArg2 );
                                        }
<PageDocArg1>{LC}                       { yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<PageDocArg1>{DOCNL}                    {
                                            warn(yyextra->fileName,yyextra->lineNr,
                                               "missing argument after "
                                               "\\page."
                                              );
                                          unput_string(yytext,yyleng);
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          //addOutput(yyscanner,'\n');
                                          BEGIN( Comment );
                                        }
<PageDocArg1>.                          { // ignore other stuff
                                        }
<PageDocArg2>{DOCNL}                    { // second argument; page title
                                          unput_string(yytext,yyleng);
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          //addOutput(yyscanner,'\n');
                                          BEGIN( Comment );
                                        }
<PageDocArg2>{CMD}[<>]                  {
                                          // bug 748927
                                          QCString tmp(yytext);
                                          tmp = substitute(substitute(tmp,"@<","&lt;"),"@>","&gt;");
                                          tmp = substitute(substitute(tmp,"\\<","&lt;"),"\\>","&gt;");
                                          yyextra->current->args += tmp;
                                        }
<PageDocArg2>.                          {
                                          yyextra->current->args += yytext;
                                        }
  /* --------- handle arguments of the param command ------------ */
<ParamArg1>{ID}/{B}*","                 {
                                          addOutput(yyscanner,yytext);
                                        }
<ParamArg1>","                          {
                                          addOutput(yyscanner," , ");
                                        }
<ParamArg1>{DOCNL}                      {
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          addOutput(yyscanner," ");
                                        }
<ParamArg1>{ID}                         {
                                          addOutput(yyscanner,yytext);
                                          BEGIN( Comment );
                                        }
<ParamArg1>.                            {
                                          unput(yytext[0]);
                                          BEGIN( Comment );
                                        }

  /* --------- handle arguments of the file/dir/example command ------------ */

<FileDocArg1>{DOCNL}                    { // no file name specified
                                          unput_string(yytext,yyleng);
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          //addOutput(yyscanner,'\n');
                                          BEGIN( Comment );
                                        }
<FileDocArg1>{FILE}                     { // first argument; name
                                          yyextra->current->name = stripQuotes(yytext);
                                          BEGIN( Comment );
                                        }
<FileDocArg1>{LC}                       { yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<FileDocArg1>.                          { // ignore other stuff
                                        }

  /* --------- handle arguments of the xrefitem command ------------ */

<XRefItemParam1>{LABELID}               { // first argument
                                          yyextra->newXRefItemKey=yytext;
                                          setOutput(yyscanner,OutputXRef);
                                          BEGIN(XRefItemParam2);
                                        }
<XRefItemParam1>{LC}                    { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<XRefItemParam1>{DOCNL}                 { // missing arguments
                                          warn(yyextra->fileName,yyextra->lineNr,
                                               "Missing first argument of \\xrefitem"
                                              );
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                          yyextra->inContext = OutputDoc;
                                          BEGIN( Comment );
                                        }
<XRefItemParam1>.                       { // ignore other stuff
                                        }

<XRefItemParam2>"\""[^\n\"]*"\""        { // second argument
                                          yyextra->xrefItemTitle = stripQuotes(yytext);
                                          BEGIN(XRefItemParam3);
                                        }
<XRefItemParam2>{LC}                    { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<XRefItemParam2>{DOCNL}                 { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                              "Missing second argument of \\xrefitem"
                                              );
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                          yyextra->inContext = OutputDoc;
                                          BEGIN( Comment );
                                        }
<XRefItemParam2>.                       { // ignore other stuff
                                        }

<XRefItemParam3>"\""[^\n\"]*"\""        { // third argument
                                          yyextra->xrefListTitle = stripQuotes(yytext);
                                          yyextra->xrefKind = XRef_Item;
                                          BEGIN( Comment );
                                        }
<XRefItemParam2,XRefItemParam3>{LC}     { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<XRefItemParam3>{DOCNL}                 { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                              "Missing third argument of \\xrefitem"
                                              );
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                          yyextra->inContext = OutputDoc;
                                          BEGIN( Comment );
                                        }
<XRefItemParam3>.                       { // ignore other stuff
                                        }


  /* ----- handle arguments of the relates(also)/memberof command ------- */

<RelatesParam1>({ID}("::"|"."))*{ID}    { // argument
                                          yyextra->current->relates = yytext;
                                          //if (yyextra->current->mGrpId!=DOX_NOGROUP)
                                          //{
                                          //  memberGroupRelates = yytext;
                                          //}
                                          BEGIN( Comment );
                                        }
<RelatesParam1>{LC}                     { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<RelatesParam1>{DOCNL}                  { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                              "Missing argument of '\\%s' command",qPrint(yyextra->currentCmd)
                                              );
                                          unput_string(yytext,yyleng);
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          //addOutput(yyscanner,'\n');
                                          BEGIN( Comment );
                                        }
<RelatesParam1>.                        { // ignore other stuff
                                        }


  /* ----- handle arguments of the relates(also)/addindex commands ----- */

<LineParam>{DOCNL}                      { // end of argument
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          //addOutput(yyscanner,'\n');
                                          unput_string(yytext,yyleng);
                                          BEGIN( Comment );
                                        }
<LineParam>{LC}                         { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<LineParam>.                            { // ignore other stuff
                                          addOutput(yyscanner,*yytext);
                                        }

  /* ----- handle arguments of the section/subsection/.. commands ------- */

<SectionLabel>{LABELID}                 { // first argument
                                          yyextra->sectionLabel=yytext;
                                          addOutput(yyscanner,yytext);
                                          yyextra->sectionTitle.resize(0);
                                          BEGIN(SectionTitle);
                                        }
<SectionLabel>{DOCNL}                   { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                              "\\section command has no label"
                                              );
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                          BEGIN( Comment );
                                        }
<SectionLabel>.                         { // invalid character for section label
                                          warn(yyextra->fileName,yyextra->lineNr,
                                              "Invalid or missing section label"
                                              );
                                          BEGIN(Comment);
                                        }
<SectionTitle>{STAopt}/"\n"             { // end of section title
                                          addSection(yyscanner);
                                          addOutput(yyscanner,yytext);
                                          BEGIN( Comment );
                                        }
<SectionTitle>{STopt}/"\\ilinebr"       { // end of section title
                                          addSection(yyscanner);
                                          addOutput(yyscanner,yytext);
                                          BEGIN( Comment );
                                        }
<SectionTitle>{LC}                      { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<SectionTitle>[^\n@\\]*                 { // any character without special meaning
                                          yyextra->sectionTitle+=yytext;
                                          addOutput(yyscanner,yytext);
                                        }
<SectionTitle>({CMD}{CMD}){ID}          { // unescape escaped command
                                          yyextra->sectionTitle+=&yytext[1];
                                          addOutput(yyscanner,yytext);
                                        }
<SectionTitle>{CMD}[$@\\&~<>#%]         { // unescape escaped character
                                          yyextra->sectionTitle+=yytext[1];
                                          addOutput(yyscanner,yytext);
                                        }
<SectionTitle>.                         { // anything else
                                          yyextra->sectionTitle+=yytext;
                                          addOutput(yyscanner,*yytext);
                                        }

  /* ----- handle arguments of the subpage command ------- */

<SubpageLabel>{LABELID}                 { // first argument
                                          addOutput(yyscanner,yytext);
                                          // we add subpage labels as a kind of "inheritance" relation to prevent
                                          // needing to add another list to the Entry class.
                                          yyextra->current->extends.push_back(BaseInfo(QCString(yytext),Public,Normal));
                                          BEGIN(SubpageTitle);
                                        }
<SubpageLabel>{DOCNL}                   { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                              "\\subpage command has no label"
                                              );
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                          BEGIN( Comment );
                                        }
<SubpageTitle>{DOCNL}                   { // no title, end command
                                          addOutput(yyscanner,yytext);
                                          BEGIN( Comment );
                                        }
<SubpageTitle>[ \t]*"\""[^\"\n]*"\""    { // add title, end of command
                                          addOutput(yyscanner,yytext);
                                          BEGIN( Comment );
                                        }
<SubpageTitle>.                         { // no title, end of command
                                          unput(*yytext);
                                          BEGIN( Comment );
                                        }

  /* ----- handle arguments of the anchor command ------- */

<AnchorLabel>{LABELID}                  { // found argument
                                          addAnchor(yyscanner,QCString(yytext));
                                          addOutput(yyscanner,yytext);
                                          BEGIN( Comment );
                                        }
<AnchorLabel>{DOCNL}                    { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                              "\\anchor command has no label"
                                              );
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                          BEGIN( Comment );
                                        }
<AnchorLabel>.                          { // invalid character for anchor label
                                          warn(yyextra->fileName,yyextra->lineNr,
                                              "Invalid or missing anchor label"
                                              );
                                          BEGIN(Comment);
                                        }


  /* ----- handle arguments of the preformatted block commands ------- */

<FormatBlock>{CMD}("endverbatim"|"endiliteral"|"endlatexonly"|"endhtmlonly"|"endxmlonly"|"enddocbookonly"|"endrtfonly"|"endmanonly"|"enddot"|"endcode"|"endmsc")/{NW} { // possible ends
                                          addOutput(yyscanner,yytext);
                                          if (&yytext[4]==yyextra->blockName) // found end of the block
                                          {
                                              BEGIN(Comment);
                                          }
                                        }
<FormatBlock>{CMD}"enduml"              {
                                          addOutput(yyscanner,yytext);
                                          if (yyextra->blockName=="startuml") // found end of the block
                                          {
                                              BEGIN(Comment);
                                          }
                                        }
<FormatBlock>[^ \@\*\/\\\n]*            { // some word
                                          addOutput(yyscanner,yytext);
                                        }
<FormatBlock>{DOCNL}                    { // new line
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<FormatBlock>{CCS}                       { // start of a C-comment
                                          if (!(yyextra->blockName=="code" || yyextra->blockName=="verbatim" || yyextra->blockName=="iliteral")) yyextra->commentCount++;
                                          addOutput(yyscanner,yytext);
                                        }
<FormatBlock>{CCE}                       { // end of a C-comment
                                          addOutput(yyscanner,yytext);
                                          if (!(yyextra->blockName=="code" || yyextra->blockName=="verbatim" || yyextra->blockName=="iliteral"))
                                          {
                                            yyextra->commentCount--;
                                            if (yyextra->commentCount<0)
                                            {
                                              QCString endTag = "end"+yyextra->blockName;
                                              if (yyextra->blockName=="startuml") endTag="enduml";
                                              warn(yyextra->fileName,yyextra->lineNr,
                                                 "found */ without matching /* while inside a \\%s block! Perhaps a missing \\%s?\n",qPrint(yyextra->blockName),qPrint(endTag));
                                            }
                                          }
                                        }
<FormatBlock>.                          {
                                          addOutput(yyscanner,*yytext);
                                        }
<FormatBlock><<EOF>>                    {
                                          QCString endTag = "end"+yyextra->blockName;
                                          if (yyextra->blockName=="startuml") endTag="enduml";
                                          warn(yyextra->fileName,yyextra->lineNr,
                                            "reached end of comment while inside a \\%s block; check for missing \\%s tag!",
                                            qPrint(yyextra->blockName),qPrint(endTag)
                                          );
                                          yyterminate();
                                        }

  /* ----- handle arguments of if/ifnot commands ------- */

<GuardParam>{B}*"("                     {
                                          yyextra->guardExpr=yytext;
                                          yyextra->roundCount=1;
                                          BEGIN(GuardExpr);
                                        }
<GuardExpr>[^()]*                       {
                                          yyextra->guardExpr+=yytext;
                                          lineCount(yyscanner);
                                        }
<GuardExpr>"("                          {
                                          yyextra->guardExpr+=yytext;
                                          yyextra->roundCount++;
                                        }
<GuardExpr>")"                          {
                                          yyextra->guardExpr+=yytext;
                                          yyextra->roundCount--;
                                          if (yyextra->roundCount==0)
                                          {
                                            handleGuard(yyscanner,yyextra->guardExpr);
                                          }
                                        }
<GuardExpr>\n                           {
                                          warn(yyextra->fileName,yyextra->lineNr,
                                                "invalid expression '%s' for yyextra->guards",qPrint(yyextra->guardExpr));
                                          unput(*yytext);
                                          BEGIN(GuardParam);
                                        }
<GuardParam>{B}*[a-z_A-Z0-9.\-]+        { // parameter of if/ifnot yyextra->guards
                                          handleGuard(yyscanner,QCString(yytext));
                                        }
<GuardParam>{DOCNL}                     { // end of argument
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          //next line is commented out due to bug620924
                                          //addOutput(yyscanner,'\n');
                                          addIline(yyscanner,yyextra->lineNr);
                                          BEGIN( Comment );
                                        }
<GuardParam>{LC}                        { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<GuardParam>.                           { // ignore other stuff
                                          addOutput(yyscanner,*yytext);
                                        }
<GuardParamEnd>{B}*{DOCNL}              {
                                          lineCount(yyscanner);
                                          yyextra->spaceBeforeIf.resize(0);
                                          addIline(yyscanner,yyextra->lineNr);
                                          BEGIN(Comment);
                                        }
<GuardParamEnd>{B}*                     {
                                          if (!yyextra->spaceBeforeIf.isEmpty()) // needed for 665313 in combination with bug620924
                                          {
                                            addOutput(yyscanner,yyextra->spaceBeforeIf);
                                          }
                                          yyextra->spaceBeforeIf.resize(0);
                                          addIline(yyscanner,yyextra->lineNr);
                                          BEGIN(Comment);
                                        }
<GuardParamEnd>.                        {
                                          unput(*yytext);
                                          addIline(yyscanner,yyextra->lineNr);
                                          BEGIN(Comment);
                                        }

  /* ----- handle skipping of conditional sections ------- */

<SkipGuardedSection>{CMD}"ifnot"/{NW}   {
                                          yyextra->guardType = Guard_IfNot;
                                          BEGIN( GuardParam );
                                        }
<SkipGuardedSection>{CMD}"if"/{NW}      {
                                          yyextra->guardType = Guard_If;
                                          BEGIN( GuardParam );
                                        }
<SkipGuardedSection>{CMD}"endif"/{NW}   {
                                          if (yyextra->guards.empty())
                                          {
                                            warn(yyextra->fileName,yyextra->lineNr,
                                                "found \\endif without matching start command");
                                          }
                                          else
                                          {
                                            GuardedSection s = yyextra->guards.top();
                                            yyextra->guards.pop();
                                            bool parentVisible = s.parentVisible();
                                            if (parentVisible)
                                            {
                                              yyextra->enabledSectionFound=TRUE;
                                              BEGIN( GuardParamEnd );
                                            }
                                          }
                                        }
<SkipGuardedSection>{CMD}"else"/{NW}    {
                                          if (yyextra->guards.empty())
                                          {
                                            warn(yyextra->fileName,yyextra->lineNr,
                                                "found \\else without matching start command");
                                          }
                                          else
                                          {
                                            if (!yyextra->enabledSectionFound && yyextra->guards.top().parentVisible())
                                            {
                                              yyextra->guards.pop();
                                              yyextra->guards.push(GuardedSection(TRUE,TRUE));
                                              yyextra->enabledSectionFound=TRUE;
                                              BEGIN( GuardParamEnd );
                                            }
                                          }
                                        }
<SkipGuardedSection>{CMD}"elseif"/{NW}  {
                                          if (yyextra->guards.empty())
                                          {
                                            warn(yyextra->fileName,yyextra->lineNr,
                                                "found \\elseif without matching start command");
                                          }
                                          else
                                          {
                                            if (!yyextra->enabledSectionFound && yyextra->guards.top().parentVisible())
                                            {
                                              yyextra->guardType=Guard_If;
                                              yyextra->guards.pop();
                                              BEGIN( GuardParam );
                                            }
                                          }
                                        }
<SkipGuardedSection>{DOCNL}             { // skip line
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          //addOutput(yyscanner,'\n');
                                        }
<SkipGuardedSection>[^ \\@\n]+          { // skip non-special characters
                                        }
<SkipGuardedSection>.                   { // any other character
                                        }


  /* ----- handle skipping of internal section ------- */

<SkipInternal>{DOCNL}                   { // skip line
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<SkipInternal>[@\\]"if"/[ \t]           {
                                          yyextra->condCount++;
                                          }
<SkipInternal>[@\\]"ifnot"/[ \t]        {
                                          yyextra->condCount++;
                                        }
<SkipInternal>[@\\]/"endif"             {
                                          yyextra->condCount--;
                                          if (yyextra->condCount<0) // handle conditional section around of \internal, see bug607743
                                          {
                                            unput('\\');
                                            BEGIN(Comment);
                                          }
                                        }
<SkipInternal>[@\\]/"section"[ \t]      {
                                          if (yyextra->sectionLevel>0)
                                          {
                                            unput('\\');
                                            BEGIN(Comment);
                                          }
                                        }
<SkipInternal>[@\\]/"subsection"[ \t]   {
                                          if (yyextra->sectionLevel>1)
                                          {
                                            unput('\\');
                                            BEGIN(Comment);
                                          }
                                        }
<SkipInternal>[@\\]/"subsubsection"[ \t] {
                                          if (yyextra->sectionLevel>2)
                                          {
                                            unput('\\');
                                            BEGIN(Comment);
                                          }
                                        }
<SkipInternal>[@\\]/"paragraph"[ \t]    {
                                          if (yyextra->sectionLevel>3)
                                          {
                                            unput('\\');
                                            BEGIN(Comment);
                                          }
                                        }
<SkipInternal>[@\\]"endinternal"[ \t]*  {
                                          BEGIN(Comment);
                                        }
<SkipInternal>[^ \\@\n]+                { // skip non-special characters
                                        }
<SkipInternal>.                         { // any other character
                                        }


  /* ----- handle argument of name command ------- */

<NameParam>{DOCNL}                      { // end of argument
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          //addOutput(yyscanner,'\n');
                                          unput_string(yytext,yyleng);
                                          BEGIN( Comment );
                                        }
<NameParam>{LC}                         { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                          yyextra->docGroup.appendHeader(' ');
                                        }
<NameParam>.                            { // ignore other stuff
                                          yyextra->docGroup.appendHeader(*yytext);
                                          yyextra->current->name+=*yytext;
                                        }

  /* ----- handle argument of noop command ------- */
<Noop>{DOCNL}                           { // end of argument
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                          BEGIN( Comment );
                                        }
<Noop>.                                 { // ignore other stuff
                                        }
  /* ----- handle argument of raisewarning command ------- */
<RaiseWarning>{DOCNL}                   { // end of argument
                                          warn_doc_error(yyextra->fileName,yyextra->lineNr,
                                                         "%s",qPrint(yyextra->raiseWarning));
                                          yyextra->raiseWarning = "";
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                          BEGIN( Comment );
                                        }
<RaiseWarning>.                         { // ignore other stuff
                                          yyextra->raiseWarning += yytext;
                                        }
  /* ----- handle argument of ingroup command ------- */

<InGroupParam>{LABELID}                 { // group id
                                          yyextra->current->groups.push_back(
                                             Grouping(QCString(yytext), Grouping::GROUPING_INGROUP)
                                          );
                                          yyextra->inGroupParamFound=TRUE;
                                        }
<InGroupParam>{DOCNL}                   { // missing argument
                                          if (!yyextra->inGroupParamFound)
                                          {
                                             warn(yyextra->fileName,yyextra->lineNr,
                                                "Missing group name for \\ingroup command"
                                                );
                                          }
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          //addOutput(yyscanner,'\n');
                                          unput_string(yytext,yyleng);
                                          BEGIN( Comment );
                                        }
<InGroupParam>{LC}                      { // line continuation
                                          yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                        }
<InGroupParam>.                         { // ignore other stuff
                                          addOutput(yyscanner,*yytext);
                                        }

  /* ----- handle argument of fn command ------- */

<FnParam>{DOCNL}                        { // end of argument
                                          if (yyextra->braceCount==0)
                                          {
                                            //if (*yytext=='\n') yyextra->lineNr++;
                                            //addOutput(yyscanner,'\n');
                                            unput_string(yytext,yyleng);
                                            yyextra->langParser->parsePrototype(yyextra->functionProto);
                                            BEGIN( Comment );
                                          }
                                        }
<FnParam>{LC}                           { // line continuation
                                          yyextra->lineNr++;
                                          yyextra->functionProto+=' ';
                                        }
<FnParam>[^@\\\n()]+                    { // non-special characters
                                          yyextra->functionProto+=yytext;
                                        }
<FnParam>"("                            {
                                          yyextra->functionProto+=yytext;
                                          yyextra->braceCount++;
                                        }
<FnParam>")"                            {
                                          yyextra->functionProto+=yytext;
                                          yyextra->braceCount--;
                                        }
<FnParam>.                              { // add other stuff
                                          yyextra->functionProto+=*yytext;
                                        }


  /* ----- handle argument of overload command ------- */


<OverloadParam>{DOCNL}                  { // end of argument
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          if (yyextra->functionProto.stripWhiteSpace().isEmpty())
                                          { // plain overload command
                                            addOutput(yyscanner,getOverloadDocs());
                                            addOutput(yyscanner,'\n');
                                          }
                                          else // overload declaration
                                          {
                                            makeStructuralIndicator(yyscanner,Entry::OVERLOADDOC_SEC);
                                            yyextra->langParser->parsePrototype(yyextra->functionProto);
                                          }
                                          BEGIN( Comment );
                                        }
<OverloadParam>{LC}                     { // line continuation
                                          yyextra->lineNr++;
                                          yyextra->functionProto+=' ';
                                        }
<OverloadParam>.                        { // add other stuff
                                          yyextra->functionProto+=*yytext;
                                        }

  /* ----- handle argument of inherit command ------- */

<InheritParam>({ID}("::"|"."))*{ID}     { // found argument
                                          yyextra->current->extends.push_back(
                                            BaseInfo(removeRedundantWhiteSpace(QCString(yytext)),Public,Normal)
                                          );
                                          BEGIN( Comment );
                                        }
<InheritParam>{DOCNL}                   { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                              "\\inherit command has no argument"
                                              );
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          addOutput(yyscanner,'\n');
                                          BEGIN( Comment );
                                        }
<InheritParam>.                         { // invalid character for anchor label
                                          warn(yyextra->fileName,yyextra->lineNr,
                                              "Invalid or missing name for \\inherit command"
                                              );
                                          BEGIN(Comment);
                                        }

  /* ----- handle argument of extends and implements commands ------- */

<ExtendsParam>({ID}("::"|"."))*{ID}     { // found argument
                                          yyextra->current->extends.push_back(
                                            BaseInfo(removeRedundantWhiteSpace(QCString(yytext)),Public,Normal)
                                          );
                                          BEGIN( Comment );
                                        }
<ExtendsParam>{DOCNL}                   { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                              "'\\%s' command has no argument",qPrint(yyextra->currentCmd)
                                              );
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          //addOutput(yyscanner,'\n');
                                          unput_string(yytext,yyleng);
                                          BEGIN( Comment );
                                        }
<ExtendsParam>.                         { // ignore other stuff
                                        }

  /* ----- handle language specific sections ------- */

<SkipLang>[\\@]"~"[a-zA-Z-]*            { /* language switch */
                                          QCString langId(&yytext[2]);
                                          if (langId.isEmpty() ||
                                              qstricmp(Config_getEnumAsString(OUTPUT_LANGUAGE).data(),langId.data())==0)
                                          { // enable language specific section
                                            BEGIN(Comment);
                                          }
                                        }
<SkipLang>[^*@\\\n]*                    { /* any character not a *, @, backslash or new line */
                                        }
<SkipLang>{DOCNL}                       { /* new line in verbatim block */
                                          if (*yytext=='\n') yyextra->lineNr++;
                                        }
<SkipLang>.                             { /* any other character */
                                        }

  /* ----- handle arguments of the cite command ------- */

<CiteLabel>{CITEID}                     { // found argument
                                          addCite(yyscanner);
                                          addOutput(yyscanner,yytext);
                                          BEGIN(Comment);
                                        }
<CiteLabel>{DOCNL}                      { // missing argument
                                          warn(yyextra->fileName,yyextra->lineNr,
                                              "\\cite command has no label"
                                              );
                                          //if (*yytext=='\n') yyextra->lineNr++;
                                          //addOutput(yyscanner,'\n');
                                          unput_string(yytext,yyleng);
                                          BEGIN( Comment );
                                        }
<CiteLabel>.                            { // invalid character for cite label
                                           warn(yyextra->fileName,yyextra->lineNr,
                                              "Invalid or missing cite label"
                                              );
                                          BEGIN(Comment);
                                        }

  /* ----- handle argument of the copydoc command ------- */

<CopyDoc><<EOF>>                        {
                                          setOutput(yyscanner,OutputDoc);
                                          addOutput(yyscanner," \\ilinebr\\ilinebr\\copydetails ");
                                          addOutput(yyscanner,yyextra->copyDocArg);
                                          addOutput(yyscanner,"\n");
                                          BEGIN(Comment);
                                        }
<CopyDoc>{DOCNL}                        {
                                          if (*yytext=='\n') yyextra->lineNr++;
                                          if (yyextra->braceCount==0)
                                          {
                                            setOutput(yyscanner,OutputDoc);
                                            addOutput(yyscanner," \\ilinebr\\ilinebr\\copydetails ");
                                            addOutput(yyscanner,yyextra->copyDocArg);
                                            addOutput(yyscanner,"\n");
                                            BEGIN(Comment);
                                          }
                                        }
<CopyDoc>{LC}                           { // line continuation
                                          yyextra->lineNr++;
                                        }
<CopyDoc>[^@\\\n()]+                    { // non-special characters
                                          yyextra->copyDocArg+=yytext;
                                          addOutput(yyscanner,yytext);
                                        }
<CopyDoc>"("                            {
                                          yyextra->copyDocArg+=yytext;
                                          addOutput(yyscanner,yytext);
                                          yyextra->braceCount++;
                                        }
<CopyDoc>")"                            {
                                          yyextra->copyDocArg+=yytext;
                                          addOutput(yyscanner,yytext);
                                          yyextra->braceCount--;
                                        }
<CopyDoc>.                              {
                                          yyextra->copyDocArg+=yytext;
                                          addOutput(yyscanner,yytext);
                                        }

 /*
<*>.  { fprintf(stderr,"Lex scanner %s %sdefault rule for state %s: #%s#\n", __FILE__,yyextra->fileName ? ("(" + yyextra->fileName +") ").data(): "",stateToString(YY_START),yytext);}
<*>\n  { fprintf(stderr,"Lex scanner %s %sdefault rule newline for state %s.\n", __FILE__, yyextra->fileName ? ("(" + yyextra->fileName +") ").data(): "",stateToString(YY_START));}
  */

%%

//----------------------------------------------------------------------------

static bool handleBrief(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  //printf("handleBrief\n");
  setOutput(yyscanner,OutputBrief);
  return FALSE;
}

static bool handleFn(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::MEMBERDOC_SEC);
  yyextra->functionProto.resize(0);
  yyextra->braceCount=0;
  BEGIN(FnParam);
  return stop;
}

static bool handleDef(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::DEFINEDOC_SEC);
  yyextra->functionProto.resize(0);
  BEGIN(FnParam);
  return stop;
}

static bool handleOverload(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->functionProto.resize(0);
  BEGIN(OverloadParam);
  return FALSE;
}

static bool handleEnum(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::ENUMDOC_SEC);
  BEGIN(EnumDocArg1);
  return stop;
}

static bool handleDefGroup(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::GROUPDOC_SEC);
  yyextra->current->groupDocType = Entry::GROUPDOC_NORMAL;
  BEGIN( GroupDocArg1 );
  return stop;
}

static bool handleAddToGroup(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::GROUPDOC_SEC);
  yyextra->current->groupDocType = Entry::GROUPDOC_ADD;
  BEGIN( GroupDocArg1 );
  return stop;
}

static bool handleWeakGroup(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::GROUPDOC_SEC);
  yyextra->current->groupDocType = Entry::GROUPDOC_WEAK;
  BEGIN( GroupDocArg1 );
  return stop;
}

static bool handleNamespace(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::NAMESPACEDOC_SEC);
  BEGIN( NameSpaceDocArg1 );
  return stop;
}

static bool handlePackage(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::PACKAGEDOC_SEC);
  BEGIN( PackageDocArg1 );
  return stop;
}

static bool handleClass(yyscan_t yyscanner,const QCString &cmd, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::CLASSDOC_SEC);
  yyextra->currentCmd = cmd;
  BEGIN( ClassDocArg1 );
  return stop;
}

static bool handleConcept(yyscan_t yyscanner,const QCString &cmd, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::CONCEPTDOC_SEC);
  yyextra->currentCmd = cmd;
  BEGIN( ConceptDocArg1 );
  return stop;
}

static bool handleHeaderFile(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  BEGIN( ClassDocArg2 );
  return FALSE;
}

static bool handleProtocol(yyscan_t yyscanner,const QCString &cmd, const StringVector &)
{ // Obj-C protocol
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::PROTOCOLDOC_SEC);
  yyextra->currentCmd = cmd;
  BEGIN( ClassDocArg1 );
  return stop;
}

static bool handleCategory(yyscan_t yyscanner,const QCString &cmd, const StringVector &)
{ // Obj-C category
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::CATEGORYDOC_SEC);
  yyextra->currentCmd = cmd;
  BEGIN( CategoryDocArg1 );
  return stop;
}

static bool handleUnion(yyscan_t yyscanner,const QCString &cmd, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::UNIONDOC_SEC);
  yyextra->currentCmd = cmd;
  BEGIN( ClassDocArg1 );
  return stop;
}

static bool handleStruct(yyscan_t yyscanner,const QCString &cmd, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::STRUCTDOC_SEC);
  yyextra->currentCmd = cmd;
  BEGIN( ClassDocArg1 );
  return stop;
}

static bool handleInterface(yyscan_t yyscanner,const QCString &cmd, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::INTERFACEDOC_SEC);
  yyextra->currentCmd = cmd;
  BEGIN( ClassDocArg1 );
  return stop;
}

static bool handleIdlException(yyscan_t yyscanner,const QCString &cmd, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::EXCEPTIONDOC_SEC);
  yyextra->currentCmd = cmd;
  BEGIN( ClassDocArg1 );
  return stop;
}

static bool handlePage(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::PAGEDOC_SEC);
  BEGIN( PageDocArg1 );
  return stop;
}

static bool handleMainpage(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::MAINPAGEDOC_SEC);
  if (!stop)
  {
    yyextra->current->name = "mainpage";
  }
  setOutput(yyscanner,OutputDoc);
  BEGIN( PageDocArg2 );
  return stop;
}

static bool handleFile(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::FILEDOC_SEC);
  if (!stop)
  {
    yyextra->current->name = yyextra->fileName;
  }
  BEGIN( FileDocArg1 );
  return stop;
}

static bool handleParam(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  // we need process param and retval arguments to escape leading underscores in case of
  // markdown processing, see bug775493
  addOutput(yyscanner,"@param ");
  BEGIN( ParamArg1 );
  return FALSE;
}

static bool handleRetval(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  addOutput(yyscanner,"@retval ");
  BEGIN( ParamArg1 );
  return FALSE;
}

static bool handleDir(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::DIRDOC_SEC);
  if (!stop) yyextra->current->name = yyextra->fileName;
  BEGIN( FileDocArg1 );
  return stop;
}

static bool handleExample(yyscan_t yyscanner,const QCString &cmd, const StringVector &optList)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  Entry::Sections section=Entry::EXAMPLE_SEC;
  for (const auto &opt : optList)
  {
    if (opt=="lineno")
    {
      section=Entry::EXAMPLE_LINENO_SEC;
    }
    else
    {
      warn(yyextra->fileName,yyextra->lineNr,
          "unsupported option '%s' for command '\\%s'",opt.c_str(),qPrint(cmd));
    }
  }
  bool stop=makeStructuralIndicator(yyscanner,section);
  if (!stop) yyextra->current->name = yyextra->fileName;
  BEGIN( FileDocArg1 );
  return stop;
}

static bool handleDetails(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (yyextra->inContext!=OutputBrief)
  {
    addOutput(yyscanner,"\\ilinebr\\ilinebr "); // treat @details outside brief description
                                                // as a new paragraph
  }
  setOutput(yyscanner,OutputDoc);
  return FALSE;
}

static bool handleRaiseWarning(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->raiseWarning = "";
  BEGIN( RaiseWarning );
  return FALSE;
}

static bool handleNoop(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  BEGIN( Noop );
  return FALSE;
}

static bool handleName(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool stop=makeStructuralIndicator(yyscanner,Entry::MEMBERGRP_SEC);
  if (!stop)
  {
    yyextra->docGroup.clearHeader();
    BEGIN( NameParam );
    if (!yyextra->docGroup.isEmpty()) // end of previous member group
    {
      yyextra->docGroup.close(yyextra->current,yyextra->fileName,yyextra->lineNr,TRUE,true);
    }
  }
  return stop;
}

static bool handleTodo(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->newXRefKind = XRef_Todo;
  setOutput(yyscanner,OutputXRef);
  yyextra->xrefKind = XRef_Todo;
  return FALSE;
}

static bool handleTest(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->newXRefKind = XRef_Test;
  setOutput(yyscanner,OutputXRef);
  yyextra->xrefKind = XRef_Test;
  return FALSE;
}

static bool handleBug(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->newXRefKind = XRef_Bug;
  setOutput(yyscanner,OutputXRef);
  yyextra->xrefKind = XRef_Bug;
  return FALSE;
}

static bool handleDeprecated(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->newXRefKind = XRef_Deprecated;
  setOutput(yyscanner,OutputXRef);
  yyextra->xrefKind = XRef_Deprecated;
  return FALSE;
}

static bool handleXRefItem(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->newXRefKind = XRef_Item;
  BEGIN(XRefItemParam1);
  return FALSE;
}

static bool handleParBlock(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (yyextra->insideParBlock)
  {
    warn(yyextra->fileName,yyextra->lineNr,
        "found \\parblock command while already in a parblock!");
  }
  if (!yyextra->spaceBeforeCmd.isEmpty())
  {
    addOutput(yyscanner,yyextra->spaceBeforeCmd);
    yyextra->spaceBeforeCmd.resize(0);
  }
  addOutput(yyscanner,"@parblock ");
  yyextra->insideParBlock = TRUE;
  return FALSE;
}

static bool handleEndParBlock(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (!yyextra->insideParBlock)
  {
    warn(yyextra->fileName,yyextra->lineNr,
        "found \\endparblock command without matching \\parblock!");
  }
  addOutput(yyscanner,"@endparblock");
  setOutput(yyscanner,OutputDoc); // to end a parblock inside a xrefitem like context
  yyextra->insideParBlock = FALSE;
  return FALSE;
}

static bool handleRelated(yyscan_t yyscanner,const QCString &cmd, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (!yyextra->current->relates.isEmpty())
  {
    warn(yyextra->fileName,yyextra->lineNr,
        "found multiple \\relates, \\relatesalso or \\memberof commands in a comment block, using last definition");
  }
  yyextra->current->relatesType = Simple;
  yyextra->currentCmd = cmd;
  BEGIN(RelatesParam1);
  return FALSE;
}

static bool handleRelatedAlso(yyscan_t yyscanner,const QCString &cmd, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (!yyextra->current->relates.isEmpty())
  {
    warn(yyextra->fileName,yyextra->lineNr,
        "found multiple \\relates, \\relatesalso or \\memberof commands in a comment block, using last definition");
  }
  yyextra->current->relatesType = Duplicate;
  yyextra->currentCmd = cmd;
  BEGIN(RelatesParam1);
  return FALSE;
}

static bool handleMemberOf(yyscan_t yyscanner,const QCString &cmd, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (!yyextra->current->relates.isEmpty())
  {
    warn(yyextra->fileName,yyextra->lineNr,
        "found multiple \\relates, \\relatesalso or \\memberof commands in a comment block, using last definition");
  }
  yyextra->current->relatesType = MemberOf;
  yyextra->currentCmd = cmd;
  BEGIN(RelatesParam1);
  return FALSE;
}

static bool handleRefItem(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  addOutput(yyscanner,"@refitem ");
  BEGIN(LineParam);
  return FALSE;
}

static bool handleSection(yyscan_t yyscanner,const QCString &s, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  setOutput(yyscanner,OutputDoc);
  addOutput(yyscanner,"@"+s+" ");
  BEGIN(SectionLabel);
  if      (s=="section")       yyextra->sectionLevel=1;
  else if (s=="subsection")    yyextra->sectionLevel=2;
  else if (s=="subsubsection") yyextra->sectionLevel=3;
  else if (s=="paragraph")     yyextra->sectionLevel=4;
  return FALSE;
}

static bool handleSubpage(yyscan_t yyscanner,const QCString &s, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (yyextra->current->section!=Entry::EMPTY_SEC &&
      yyextra->current->section!=Entry::PAGEDOC_SEC &&
      yyextra->current->section!=Entry::MAINPAGEDOC_SEC
     )
  {
    warn(yyextra->fileName,yyextra->lineNr,
        "found \\subpage command in a comment block that is not marked as a page!");
  }
  if (!yyextra->spaceBeforeCmd.isEmpty())
  {
    addOutput(yyscanner,yyextra->spaceBeforeCmd);
    yyextra->spaceBeforeCmd.resize(0);
  }
  addOutput(yyscanner,"@"+s+" ");
  BEGIN(SubpageLabel);
  return FALSE;
}

static bool handleAnchor(yyscan_t yyscanner,const QCString &s, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  addOutput(yyscanner,"@"+s+" ");
  BEGIN(AnchorLabel);
  return FALSE;
}

static bool handleImage(yyscan_t yyscanner,const QCString &s, const StringVector &optList)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  for (const auto &opt : optList)
  {
    QCString locOpt(opt);
    locOpt = locOpt.stripWhiteSpace();
    if (locOpt.lower().startsWith("anchor:"))
    {
      addAnchor(yyscanner,locOpt.mid(7));
      break; // real option handling will be done later on
    }
  }
  if (optList.empty())
  {
    addOutput(yyscanner,"@"+s+" ");
  }
  else
  {
    addOutput(yyscanner,"@"+s+"{"+QCString(join(optList,","))+"} ");
  }
  BEGIN(Comment);
  return FALSE;
}

static bool handleCite(yyscan_t yyscanner,const QCString &s, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (!yyextra->spaceBeforeCmd.isEmpty())
  {
    addOutput(yyscanner,yyextra->spaceBeforeCmd);
    yyextra->spaceBeforeCmd.resize(0);
  }
  addOutput(yyscanner,"@"+s+" ");
  BEGIN(CiteLabel);
  return FALSE;
}

static bool handleFormatBlock(yyscan_t yyscanner,const QCString &s, const StringVector &optList)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (!yyextra->spaceBeforeCmd.isEmpty())
  {
    addOutput(yyscanner,yyextra->spaceBeforeCmd);
    yyextra->spaceBeforeCmd.resize(0);
  }
  if (optList.empty())
  {
    addOutput(yyscanner,"@"+s+" ");
  }
  else
  {
    addOutput(yyscanner,"@"+s+"{"+QCString(join(optList,","))+"} ");
  }
  //printf("handleFormatBlock(%s) with option(%s)\n",qPrint(s),qPrint(opt));
  yyextra->blockName=s;
  yyextra->commentCount=0;
  BEGIN(FormatBlock);
  return FALSE;
}

static bool handleAddIndex(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  addOutput(yyscanner,"@addindex ");
  BEGIN(LineParam);
  return FALSE;
}

static bool handleIf(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->enabledSectionFound=FALSE;
  yyextra->guardType = Guard_If;
  yyextra->spaceBeforeIf = yyextra->spaceBeforeCmd;
  BEGIN(GuardParam);
  return FALSE;
}

static bool handleIfNot(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->enabledSectionFound=FALSE;
  yyextra->guardType = Guard_IfNot;
  yyextra->spaceBeforeIf = yyextra->spaceBeforeCmd;
  BEGIN(GuardParam);
  return FALSE;
}

static bool handleElseIf(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (yyextra->guards.empty())
  {
    warn(yyextra->fileName,yyextra->lineNr,
        "found \\else without matching start command");
  }
  else
  {
    yyextra->guardType = yyextra->enabledSectionFound ? Guard_Skip : Guard_If;
    yyextra->spaceBeforeIf = yyextra->spaceBeforeCmd;
    BEGIN(GuardParam);
  }
  return FALSE;
}

static bool handleElse(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (yyextra->guards.empty())
  {
    warn(yyextra->fileName,yyextra->lineNr,
        "found \\else without matching start command");
  }
  else
  {
    yyextra->spaceBeforeIf = yyextra->spaceBeforeCmd;
    BEGIN( SkipGuardedSection );
  }
  return FALSE;
}

static bool handleEndIf(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (yyextra->guards.empty())
  {
    warn(yyextra->fileName,yyextra->lineNr,
        "found \\endif without matching start command");
  }
  else
  {
    yyextra->guards.pop();
  }
  yyextra->enabledSectionFound=FALSE;
  if (!yyextra->spaceBeforeCmd.isEmpty())
  {
    addOutput(yyscanner,yyextra->spaceBeforeCmd);
    yyextra->spaceBeforeCmd.resize(0);
  }
  BEGIN( GuardParamEnd );
  return FALSE;
}

static bool handleIngroup(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->inGroupParamFound=FALSE;
  BEGIN( InGroupParam );
  return FALSE;
}

static bool handleNoSubGrouping(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->subGrouping = FALSE;
  return FALSE;
}

static bool handleShowInitializer(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->initLines = 100000; // ON
  return FALSE;
}

static bool handleHideInitializer(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->initLines = 0; // OFF
  return FALSE;
}

static bool handleCallgraph(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->callGraph = TRUE; // ON
  return FALSE;
}

static bool handleHideCallgraph(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->callGraph = FALSE; // OFF
  return FALSE;
}

static bool handleCallergraph(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->callerGraph = TRUE; // ON
  return FALSE;
}

static bool handleHideCallergraph(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->callerGraph = FALSE; // OFF
  return FALSE;
}

static bool handleReferencedByRelation(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->referencedByRelation = TRUE; // ON
  return FALSE;
}

static bool handleHideReferencedByRelation(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->referencedByRelation = FALSE; // OFF
  return FALSE;
}

static bool handleReferencesRelation(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->referencesRelation = TRUE; // ON
  return FALSE;
}

static bool handleHideReferencesRelation(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->referencesRelation = FALSE; // OFF
  return FALSE;
}

static bool handleInternal(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (!Config_getBool(INTERNAL_DOCS))
  {
    // make sure some whitespace before a \internal command
    // is not treated as "documentation"
    if (yyextra->current->doc.stripWhiteSpace().isEmpty())
    {
      yyextra->current->doc.resize(0);
    }
    yyextra->condCount=0;
    BEGIN( SkipInternal );
  }
  else
  {
    // re-enabled for bug640828
    addOutput(yyscanner," \\internal ");
    yyextra->inInternalDocs = TRUE;
  }
  return FALSE;
}

static bool handleStatic(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->stat = TRUE;
  return FALSE;
}

static bool handlePure(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->virt = Pure;
  return FALSE;
}

static bool handlePrivate(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->protection = Private;
  return FALSE;
}

static bool handlePrivateSection(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->protection = yyextra->protection = Private;
  return FALSE;
}

static bool handleProtected(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->protection = Protected;
  return FALSE;
}

static bool handleProtectedSection(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->protection = yyextra->protection = Protected ;
  return FALSE;
}

static bool handlePublic(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->protection = Public;
  return FALSE;
}

static bool handlePublicSection(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->current->protection = yyextra->protection = Public;
  return FALSE;
}

static bool handleToc(yyscan_t yyscanner,const QCString &, const StringVector &optList)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (yyextra->current->section==Entry::PAGEDOC_SEC ||
      yyextra->current->section==Entry::MAINPAGEDOC_SEC)
  {
    for (const auto &opt_ : optList)
    {
      QCString opt = QCString(opt_).stripWhiteSpace().lower();
      char dum;
      int level = 5;
      int i = opt.find(':');
      if (i>0)  // found ':' but not on position 0 what would mean just a level
      {
        if (sscanf(opt.right(opt.length() - i - 1).data(),"%d%c",&level,&dum) != 1)
        {
          warn(yyextra->fileName,yyextra->lineNr,"Unknown option:level specified with \\tableofcontents: '%s'", qPrint(QCString(opt_).stripWhiteSpace()));
          opt = "";
        }
        else
        {
          level = (level > 5 ? 5 : level);
          level = (level <= 0 ? 5 : level);
          opt = opt.left(i).stripWhiteSpace();
        }
      }
      if (!opt.isEmpty())
      {
        if (opt == "html")
        {
          yyextra->current->localToc.enableHtml(level);
        }
        else if (opt == "latex")
        {
          yyextra->current->localToc.enableLatex(level);
        }
        else if (opt == "xml")
        {
          yyextra->current->localToc.enableXml(level);
        }
        else if (opt == "docbook")
        {
          yyextra->current->localToc.enableDocbook(level);
        }
        else
        {
          warn(yyextra->fileName,yyextra->lineNr,"Unknown option specified with \\tableofcontents: '%s'", qPrint(QCString(opt_).stripWhiteSpace()));
        }
      }
    }
    if (yyextra->current->localToc.nothingEnabled())
    {
      // for backward compatibility
      yyextra->current->localToc.enableHtml(5);
      yyextra->current->localToc.enableXml(5);
    }
  }
  return FALSE;
}

static bool handleInherit(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  BEGIN(InheritParam);
  return FALSE;
}

static bool handleExtends(yyscan_t yyscanner,const QCString &cmd, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->currentCmd = cmd;
  BEGIN(ExtendsParam);
  return FALSE;
}

static bool handleCopyBrief(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (yyextra->current->brief.isEmpty() && yyextra->current->doc.isEmpty())
  { // if we don't have a brief or detailed description yet,
    // then the @copybrief should end up in the brief description.
    // otherwise it will be copied inline (see bug691315 & bug700788)
    setOutput(yyscanner,OutputBrief);
  }
  if (!yyextra->spaceBeforeCmd.isEmpty())
  {
    addOutput(yyscanner,yyextra->spaceBeforeCmd);
    yyextra->spaceBeforeCmd.resize(0);
  }
  addOutput(yyscanner,"\\copybrief ");
  return FALSE;
}

static bool handleCopyDetails(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  setOutput(yyscanner,OutputDoc);
  if (!yyextra->spaceBeforeCmd.isEmpty())
  {
    addOutput(yyscanner,yyextra->spaceBeforeCmd);
    yyextra->spaceBeforeCmd.resize(0);
  }
  addOutput(yyscanner,"\\copydetails ");
  return FALSE;
}

static bool handleCopyDoc(yyscan_t yyscanner,const QCString &, const StringVector &)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (yyextra->current->brief.isEmpty() && yyextra->current->doc.isEmpty())
  { // if we don't have a brief or detailed description yet,
    // then the @copybrief should end up in the brief description.
    // otherwise it will be copied inline (see bug691315 & bug700788)
    setOutput(yyscanner,OutputBrief);
  }
  if (!yyextra->spaceBeforeCmd.isEmpty())
  {
    addOutput(yyscanner,yyextra->spaceBeforeCmd);
    yyextra->spaceBeforeCmd.resize(0);
  }
  addOutput(yyscanner,"\\copybrief ");
  yyextra->copyDocArg.resize(0);
  yyextra->braceCount = 0;
  BEGIN(CopyDoc);
  return FALSE;
}

//-----------------------------------------------------------------------------------------

static void initParser(yyscan_t yyscanner)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->sectionLabel.resize(0);
  yyextra->sectionTitle.resize(0);
  yyextra->docGroup.clearHeader();
  yyextra->insideParBlock = FALSE;
}


static bool getDocSectionName(int s)
{
  switch(s)
  {
    case Entry::CLASSDOC_SEC:
    case Entry::STRUCTDOC_SEC:
    case Entry::UNIONDOC_SEC:
    case Entry::EXCEPTIONDOC_SEC:
    case Entry::NAMESPACEDOC_SEC:
    case Entry::PROTOCOLDOC_SEC:
    case Entry::CATEGORYDOC_SEC:
    case Entry::ENUMDOC_SEC:
    case Entry::PAGEDOC_SEC:
    case Entry::VARIABLEDOC_SEC:
    case Entry::MEMBERDOC_SEC:
    case Entry::OVERLOADDOC_SEC:
    case Entry::FILEDOC_SEC:
    case Entry::DEFINEDOC_SEC:
    case Entry::GROUPDOC_SEC:
    case Entry::MAINPAGEDOC_SEC:
    case Entry::PACKAGEDOC_SEC:
    case Entry::DIRDOC_SEC:
    case Entry::EXAMPLE_SEC:
    case Entry::MEMBERGRP_SEC:
    case Entry::CONCEPTDOC_SEC:
      return TRUE;
    default:
      return FALSE;
  }
}

//-----------------------------------------------------------------------------

static bool makeStructuralIndicator(yyscan_t yyscanner,Entry::Sections s)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  //printf("yyextra->current->section=%x\n",yyextra->current->section);
  if (getDocSectionName(yyextra->current->section))
  {
    return TRUE;
  }
  else
  {
    yyextra->needNewEntry = TRUE;
    yyextra->current->section = s;
    yyextra->current->fileName = yyextra->fileName;
    yyextra->current->startLine = yyextra->lineNr;
    yyextra->current->docLine = yyextra->lineNr;
    return FALSE;
  }
}

//-----------------------------------------------------------------

static void lineCount(yyscan_t yyscanner)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  for( const char* c = yytext ; *c ; ++c )
    yyextra->lineNr += (*c == '\n') ;
}

//-----------------------------------------------------------------

static QCString stripQuotes(const char *s)
{
  QCString name;
  if (s==0 || *s==0) return name;
  name=s;
  if (name.at(0)=='"' && name.at(name.length()-1)=='"')
  {
    name=name.mid(1,name.length()-2);
  }
  return name;
}

//-----------------------------------------------------------------

static void addXRefItem(yyscan_t yyscanner,
                        const QCString &listName,const QCString &itemTitle,
                        const QCString &listTitle,bool append)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (listName.isEmpty()) return;
  //printf("addXRefItem(%s,%s,%s,%d)\n",listName,itemTitle,listTitle,append);

  std::unique_lock<std::mutex> lock(g_sectionMutex);

  RefList *refList = RefListManager::instance().add(listName,listTitle,itemTitle);
  RefItem *item = 0;
  for (auto it = yyextra->current->sli.rbegin(); it != yyextra->current->sli.rend(); ++it)
  {
    RefItem *i = *it;
    if (i && i->list()->listName()==listName)
    {
      //printf("found %s lii->type=%s\n",listName,qPrint(i->list()->listName()));
      item = i;
      break;
    }
  }
  if (item && append) // already found item of same type just before this one
  {
    //printf("listName=%s item id = %d existing\n",listName,item->id());
    item->setText(item->text() + " <p>" + yyextra->outputXRef);
    //printf("%s: text +=%s\n",listName,qPrint(item->text));
  }
  else // new item
  {

    // if we have already an item from the same list type (e.g. a second @todo)
    // in the same Entry (i.e. lii!=0) then we reuse its link anchor.
    item = refList->add();
    //printf("listName=%s item id = %d new yyextra->current=%p\n",listName,item->id(),yyextra->current);
    QCString anchorLabel;
    anchorLabel.sprintf("_%s%06d",listName.data(),item->id());
    item->setText(yyextra->outputXRef);
    item->setAnchor(anchorLabel);
    yyextra->current->sli.push_back(item);
    QCString cmdString;
    cmdString.sprintf(" \\xrefitem %s %d.",qPrint(listName),item->id());
    if (yyextra->inBody)
    {
      yyextra->current->inbodyDocs += cmdString;
    }
    else
    {
      yyextra->current->doc += cmdString;
    }

    {
      SectionManager &sm = SectionManager::instance();
      const SectionInfo *si = sm.find(anchorLabel);
      if (si)
      {
        if (!si->ref().isEmpty()) // we are from a tag file
        {
          si = sm.replace(anchorLabel,listName,yyextra->lineNr,
              yyextra->sectionTitle,SectionType::Anchor,
              yyextra->sectionLevel);
          yyextra->current->anchors.push_back(si);
        }
        else if (si->lineNr() != -1)
        {
          warn(listName,yyextra->lineNr,"multiple use of section label '%s', (first occurrence: %s, line %d)",qPrint(anchorLabel),qPrint(si->fileName()),si->lineNr());
        }
        else
        {
          warn(listName,yyextra->lineNr,"multiple use of section label '%s', (first occurrence: %s)",qPrint(anchorLabel),qPrint(si->fileName()));
        }
      }
      else
      {
        si = sm.add(anchorLabel,listName,yyextra->lineNr,
            yyextra->sectionTitle,SectionType::Anchor,
            yyextra->sectionLevel);
        yyextra->current->anchors.push_back(si);
      }
    }
  }
  yyextra->outputXRef.resize(0);
}

//-----------------------------------------------------------------------------

// Adds a formula text to the list/dictionary of formulas if it was
// not already added. Returns the label of the formula.
static QCString addFormula(yyscan_t yyscanner)
{
  std::unique_lock<std::mutex> lock(g_formulaMutex);
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  QCString formLabel;
  QCString fText=yyextra->formulaText.simplifyWhiteSpace();
  int id = FormulaManager::instance().addFormula(fText.str());
  formLabel.sprintf("\\_form#%d",id);
  for (int i=0;i<yyextra->formulaNewLines;i++) formLabel+="@_fakenl"; // add fake newlines to
                                                         // keep the warnings
                                                         // correctly aligned.
  return formLabel;
}

//-----------------------------------------------------------------------------

static SectionType sectionLevelToType(int level)
{
  if (level>=0 && level<5) return (SectionType)level;
  return SectionType::Anchor;
}

static void addSection(yyscan_t yyscanner)
{
  std::unique_lock<std::mutex> lock(g_sectionMutex);
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  SectionManager &sm = SectionManager::instance();
  const SectionInfo *si = sm.find(yyextra->sectionLabel);
  if (si)
  {
    if (!si->ref().isEmpty()) // we are from a tag file
    {
      // create a new section element
      yyextra->sectionTitle+=yytext;
      yyextra->sectionTitle=yyextra->sectionTitle.stripWhiteSpace();
      si = sm.replace(yyextra->sectionLabel,yyextra->fileName,yyextra->lineNr,
                      yyextra->sectionTitle,sectionLevelToType(yyextra->sectionLevel),
                      yyextra->sectionLevel);

      // add section to this entry
      yyextra->current->anchors.push_back(si);
    }
    else if (si->lineNr() != -1)
    {
      warn(yyextra->fileName,yyextra->lineNr,"multiple use of section label '%s' while adding section, (first occurrence: %s, line %d)",qPrint(yyextra->sectionLabel),qPrint(si->fileName()),si->lineNr());
    }
    else
    {
      warn(yyextra->fileName,yyextra->lineNr,"multiple use of section label '%s' while adding section, (first occurrence: %s)",qPrint(yyextra->sectionLabel),qPrint(si->fileName()));
    }
  }
  else
  {
    // create a new section element
    yyextra->sectionTitle+=yytext;
    yyextra->sectionTitle=yyextra->sectionTitle.stripWhiteSpace();
    si = sm.add(yyextra->sectionLabel,yyextra->fileName,yyextra->lineNr,
                yyextra->sectionTitle,sectionLevelToType(yyextra->sectionLevel),
                yyextra->sectionLevel);

    // add section to this entry
    yyextra->current->anchors.push_back(si);
  }
}

//-----------------------------------------------------------------------------

static void addCite(yyscan_t yyscanner)
{
  std::unique_lock<std::mutex> lock(g_citeMutex);
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  QCString name(yytext);
  if (yytext[0] =='"')
  {
    name=yytext+1;
    name=name.left((int)yyleng-2);
  }
  CitationManager::instance().insert(name);
}

//-----------------------------------------------------------------------------

// strip trailing whitespace (excluding newlines) from string s
static void stripTrailingWhiteSpace(QCString &s)
{
  uint len = s.length();
  int i = (int)len-1;
  char c;
  while (i>=0)
  {
    c = s.at(i);
    if (c==' ' || c=='\t' || c=='\r') // normal whitespace
    {
      i--;
    }
    else if (c=='r' && i>=7 && qstrncmp("\\ilinebr",s.data()+i-7,8)==0) // special line break marker
    {
      i-=8;
    }
    else // non-whitespace
    {
      break;
    }
  }
  //printf("stripTrailingWhitespace(%s) i=%d len=%d\n",qPrint(s),i,len);
  if (i!=(int)len-1)
  {
    s.resize(i+2); // string up to and including char at pos i and \0 terminator
  }
}

// selects the output to write to
static inline void setOutput(yyscan_t yyscanner,OutputContext ctx)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  bool xrefAppendToPrev = yyextra->xrefAppendFlag;
  // determine append flag for the next item (i.e. the end of this item)
  yyextra->xrefAppendFlag = !yyextra->inBody &&
                   yyextra->inContext==OutputXRef && ctx==OutputXRef && // two consecutive xref items
                   yyextra->newXRefKind==yyextra->xrefKind &&                    // of the same kind
                   (yyextra->xrefKind!=XRef_Item ||
                    yyextra->newXRefItemKey==yyextra->xrefItemKey);              // with the same key if \xrefitem
  //printf("%d && %d && %d && (%d || %d)\n",
  //                 yyextra->inContext==OutputXRef,
  //                 ctx==OutputXRef,
  //                 yyextra->newXRefKind==yyextra->xrefKind,
  //                 yyextra->xrefKind!=XRef_Item,
  //                 yyextra->newXRefItemKey==yyextra->xrefItemKey);
  //printf("refKind=%d yyextra->newXRefKind=%d xrefAppendToPrev=%d yyextra->xrefAppendFlag=%d\n",
  //             yyextra->xrefKind,yyextra->newXRefKind,xrefAppendToPrev,yyextra->xrefAppendFlag);

  //printf("setOutput(yyscanner,yyextra->inContext=%d ctx=%d)\n",yyextra->inContext,ctx);
  if (yyextra->inContext==OutputXRef) // end of XRef section => add the item
  {
    // See if we can append this new xref item to the previous one.
    // We know this at the start of the next item of the same
    // type and need to remember this until the end of that item.
    switch(yyextra->xrefKind)
    {
      case XRef_Todo:
        addXRefItem(yyscanner,QCString("todo"),
            theTranslator->trTodo(),
            theTranslator->trTodoList(),
            xrefAppendToPrev
            );
        break;
      case XRef_Test:
        addXRefItem(yyscanner,QCString("test"),
            theTranslator->trTest(),
            theTranslator->trTestList(),
            xrefAppendToPrev
            );
        break;
      case XRef_Bug:
        addXRefItem(yyscanner,QCString("bug"),
            theTranslator->trBug(),
            theTranslator->trBugList(),
            xrefAppendToPrev
            );
        break;
      case XRef_Deprecated:
        addXRefItem(yyscanner,QCString("deprecated"),
            theTranslator->trDeprecated(),
            theTranslator->trDeprecatedList(),
            xrefAppendToPrev
            );
        break;
      case XRef_Item:  // user defined list
        addXRefItem(yyscanner,yyextra->xrefItemKey,
            yyextra->xrefItemTitle,
            yyextra->xrefListTitle,
            xrefAppendToPrev
            );
        break;
      case XRef_None:
        ASSERT(0);
        break;
    }
  }
  yyextra->xrefItemKey = yyextra->newXRefItemKey;

  int oldContext = yyextra->inContext;
  yyextra->inContext = ctx;
  if (yyextra->inContext!=OutputXRef && yyextra->inBody) yyextra->inContext=OutputInbody;
  switch(yyextra->inContext)
  {
    case OutputDoc:
      if (oldContext!=yyextra->inContext)
      {
        stripTrailingWhiteSpace(yyextra->current->doc);
        if (yyextra->current->doc.isEmpty()) yyextra->current->docLine = yyextra->lineNr;
        if (yyextra->current->docFile.isEmpty())
        {
          yyextra->current->docFile = yyextra->fileName;
          yyextra->current->docLine = yyextra->lineNr;
        }
      }
      yyextra->pOutputString = &yyextra->current->doc;
      break;
    case OutputBrief:
      if (oldContext!=yyextra->inContext)
      {
        if (yyextra->current->brief.isEmpty()) yyextra->current->briefLine = yyextra->lineNr;
        if (yyextra->current->briefFile.isEmpty())
        {
          yyextra->current->briefFile = yyextra->fileName;
          yyextra->current->briefLine = yyextra->lineNr;
        }
      }
      if (yyextra->current->brief.stripWhiteSpace().isEmpty()) // we only want one brief
        // description even if multiple
        // are given...
      {
        yyextra->pOutputString = &yyextra->current->brief;
      }
      else
      {
        if (!yyextra->current->doc.isEmpty()) // when appending parts add a new line
        {
          yyextra->current->doc += "\n";
        }
        yyextra->pOutputString = &yyextra->current->doc;
        yyextra->inContext = OutputDoc; // need to switch to detailed docs, see bug 631380
      }
      break;
    case OutputXRef:
      yyextra->pOutputString = &yyextra->outputXRef;
      // first item found, so can't append to previous
      //yyextra->xrefAppendFlag = FALSE;
      break;
    case OutputInbody:
      yyextra->pOutputString = &yyextra->current->inbodyDocs;
      break;
  }
}


static void addAnchor(yyscan_t yyscanner,const QCString &anchor)
{
  std::unique_lock<std::mutex> lock(g_sectionMutex);
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  SectionManager &sm = SectionManager::instance();
  const SectionInfo *si = sm.find(anchor);
  if (si)
  {
    if (!si->ref().isEmpty()) // we are from a tag file
    {
      si = sm.replace(anchor,yyextra->fileName,yyextra->lineNr,QCString(),SectionType::Anchor,0);
      yyextra->current->anchors.push_back(si);
    }
    else if (si->lineNr() != -1)
    {
      warn(yyextra->fileName,yyextra->lineNr,
          "multiple use of section label '%s' while adding anchor, (first occurrence: %s, line %d)",
          qPrint(anchor),qPrint(si->fileName()),si->lineNr());
    }
    else
    {
      warn(yyextra->fileName,yyextra->lineNr,"multiple use of section label '%s' while adding anchor, (first occurrence: %s)",
          qPrint(anchor),qPrint(si->fileName()));
    }
  }
  else
  {
    si = sm.add(anchor,yyextra->fileName,yyextra->lineNr,QCString(),SectionType::Anchor,0);
    yyextra->current->anchors.push_back(si);
  }
}

// add a string to the output
static inline void addOutput(yyscan_t yyscanner,const char *s)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  //printf("addOutput(yyscanner,%s)\n",s);
  *yyextra->pOutputString+=s;
}

// add a string to the output
static inline void addOutput(yyscan_t yyscanner,const QCString &s)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  //printf("addOutput(yyscanner,%s)\n",s);
  *yyextra->pOutputString+=s;
}

// add a character to the output
static inline void addOutput(yyscan_t yyscanner,char c)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  *yyextra->pOutputString+=c;
}

static void addIline(yyscan_t yyscanner,int lineNr)
{
  char cmd[30];
  sprintf(cmd,"\\iline %d \\ilinebr ",lineNr);
  addOutput(yyscanner, cmd);
}

static void endBrief(yyscan_t yyscanner,bool addToOutput)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (!yyextra->current->brief.stripWhiteSpace().isEmpty())
  { // only go to the detailed description if we have
    // found some brief description and not just whitespace
    yyextra->briefEndsAtDot=FALSE;
    setOutput(yyscanner,OutputDoc);
    if (addToOutput) addOutput(yyscanner,yytext);
  }
}

static yy_size_t yyread(yyscan_t yyscanner,char *buf,yy_size_t max_size)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  yyextra->prevPosition=yyextra->inputPosition;
  yy_size_t c=0;
  while( c < max_size && yyextra->inputString[yyextra->inputPosition] )
  {
    *buf = yyextra->inputString[yyextra->inputPosition++] ;
    //printf("%d (%c)\n",*buf,*buf);
    c++; buf++;
  }
  return c;
}

//----------------------------------------------------------------------------

static void checkFormula(yyscan_t yyscanner)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  if (YY_START==ReadFormulaShort || YY_START==ReadFormulaRound || YY_START==ReadFormulaLong)
  {
    warn(yyextra->fileName,yyextra->lineNr,"End of comment block while inside formula.");
  }
}

//----------------------------------------------------------------------------

struct CommentScanner::Private
{
  yyscan_t yyscanner;
  commentscanYY_state extra;
};

CommentScanner::CommentScanner() : p(std::make_unique<Private>())
{
  commentscanYYlex_init_extra(&p->extra,&p->yyscanner);
#ifdef FLEX_DEBUG
  commentscanYYset_debug(1,p->yyscanner);
#endif
}

CommentScanner::~CommentScanner()
{
  commentscanYYlex_destroy(p->yyscanner);
}

bool CommentScanner::parseCommentBlock(/* in */     OutlineParserInterface *parser,
                       /* in */     Entry *curEntry,
                       /* in */     const QCString &comment,
                       /* in */     const QCString &fileName,
                       /* in,out */ int  &lineNr,
                       /* in */     bool isBrief,
                       /* in */     bool isAutoBriefOn,
                       /* in */     bool isInbody,
                       /* in,out */ Protection &prot,
                       /* in,out */ int &position,
                       /* out */    bool &newEntryNeeded,
                       /* in */     bool markdownSupport
                      )
{
  yyscan_t yyscanner = p->yyscanner;
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  //printf("parseCommentBlock() isBrief=%d isAutoBriefOn=%d lineNr=%d\n",
  //    isBrief,isAutoBriefOn,lineNr);

  initParser(yyscanner);
  yyextra->guards = std::stack<GuardedSection>();
  yyextra->langParser     = parser;
  yyextra->current        = curEntry;
  yyextra->current->docLine = (lineNr > 1 ? lineNr : 1);
  if (comment.isEmpty()) return FALSE; // avoid empty strings
  yyextra->inputString    = comment;
  yyextra->inputString.append(" ");
  yyextra->inputPosition  = position;
  yyextra->lineNr         = lineNr;
  yyextra->fileName       = fileName;
  yyextra->protection     = prot;
  yyextra->needNewEntry   = FALSE;
  yyextra->xrefKind       = XRef_None;
  yyextra->xrefAppendFlag = FALSE;
  yyextra->insidePre      = FALSE;
  yyextra->parseMore      = FALSE;
  yyextra->inBody         = isInbody;
  yyextra->markdownSupport= markdownSupport;
  yyextra->outputXRef.resize(0);
  if (!isBrief && !isAutoBriefOn && !yyextra->current->doc.isEmpty())
  { // add newline separator between detailed comment blocks
    yyextra->current->doc += '\n';
  }
  setOutput(yyscanner, isBrief || isAutoBriefOn ? OutputBrief : OutputDoc );
  yyextra->briefEndsAtDot = isAutoBriefOn;
  yyextra->condCount    = 0;
  yyextra->sectionLevel = 0;
  yyextra->spaceBeforeCmd.resize(0);
  yyextra->spaceBeforeIf.resize(0);

  printlex(yy_flex_debug, TRUE, __FILE__, !fileName.isEmpty() ? qPrint(fileName): NULL);
  if (!yyextra->current->inbodyDocs.isEmpty() && isInbody) // separate in body fragments
  {
    yyextra->current->inbodyDocs+="\n\n";
  }

  Debug::print(Debug::CommentScan,0,"-----------\nCommentScanner: %s:%d\n"
               "input=[\n%s]\n",qPrint(fileName),lineNr,qPrint(yyextra->inputString)
              );

  commentscanYYrestart( 0, yyscanner );
  BEGIN( Comment );
  commentscanYYlex(yyscanner);
  setOutput(yyscanner, OutputDoc );

  if (YY_START==OverloadParam) // comment ended with \overload
  {
    addOutput(yyscanner,getOverloadDocs());
  }

  if (!yyextra->guards.empty())
  {
    warn(yyextra->fileName,yyextra->lineNr,"Documentation block ended in the middle of a conditional section!");
  }

  if (yyextra->insideParBlock)
  {
    warn(yyextra->fileName,yyextra->lineNr,
        "Documentation block ended while inside a \\parblock. Missing \\endparblock");
  }

  yyextra->current->doc=stripLeadingAndTrailingEmptyLines(yyextra->current->doc,yyextra->current->docLine);

  if (yyextra->current->section==Entry::FILEDOC_SEC && yyextra->current->doc.isEmpty())
  {
    // to allow a comment block with just a @file command.
    yyextra->current->doc="\n\n";
  }

  if (yyextra->current->section==Entry::MEMBERGRP_SEC &&
      yyextra->docGroup.isEmpty()) // @name section but no group started yet
  {
    yyextra->docGroup.open(yyextra->current,yyextra->fileName,yyextra->lineNr,true);
  }

  Debug::print(Debug::CommentScan,0,"-----------\nCommentScanner: %s:%d\noutput=[\n"
               "brief=[line=%d\n%s]\ndocs=[line=%d\n%s]\ninbody=[line=%d\n%s]\n]\n===========\n",
               qPrint(fileName),lineNr,
               yyextra->current->briefLine,qPrint(yyextra->current->brief),
               yyextra->current->docLine,qPrint(yyextra->current->doc),
               yyextra->current->inbodyLine,qPrint(yyextra->current->inbodyDocs)
              );

  checkFormula(yyscanner);
  prot = yyextra->protection;

  yyextra->docGroup.addDocs(curEntry);

  newEntryNeeded = yyextra->needNewEntry;

  // if we did not proceed during this call, it does not make
  // sense to continue, since we get stuck. See bug 567346 for situations
  // were this happens
  if (yyextra->parseMore && position==yyextra->inputPosition) yyextra->parseMore=FALSE;

  if (yyextra->parseMore) position=yyextra->inputPosition; else position=0;

  lineNr = yyextra->lineNr;
  //printf("position=%d yyextra->parseMore=%d newEntryNeeded=%d\n",
  //  position,yyextra->parseMore,newEntryNeeded);

  printlex(yy_flex_debug, FALSE, __FILE__, !fileName.isEmpty() ? qPrint(fileName): NULL);
  return yyextra->parseMore;
}

static void handleGuard(yyscan_t yyscanner,const QCString &expr)
{
  struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;
  CondParser prs;
  bool sectionEnabled=prs.parse(yyextra->fileName,yyextra->lineNr,expr.stripWhiteSpace());
  bool parentEnabled = TRUE;
  if (!yyextra->guards.empty()) parentEnabled = yyextra->guards.top().isEnabled();
  if (parentEnabled)
  {
    if (
        (sectionEnabled && yyextra->guardType==Guard_If) ||
        (!sectionEnabled && yyextra->guardType==Guard_IfNot)
       ) // section is visible
    {
      yyextra->guards.push(GuardedSection(TRUE,TRUE));
      yyextra->enabledSectionFound=TRUE;
      BEGIN( GuardParamEnd );
    }
    else // section is invisible
    {
      if (yyextra->guardType!=Guard_Skip)
      {
        yyextra->guards.push(GuardedSection(FALSE,TRUE));
      }
      BEGIN( SkipGuardedSection );
    }
  }
  else // invisible because of parent
  {
    yyextra->guards.push(GuardedSection(FALSE,FALSE));
    BEGIN( SkipGuardedSection );
  }
}

void CommentScanner::initGroupInfo(Entry *entry)
{
  struct yyguts_t *yyg = (struct yyguts_t*)p->yyscanner;
  yyextra->docGroup.initGroupInfo(entry);
}

void CommentScanner::enterFile(const QCString &fileName,int lineNr)
{
  struct yyguts_t *yyg = (struct yyguts_t*)p->yyscanner;
  yyextra->docGroup.enterFile(fileName,lineNr);
}

void CommentScanner::leaveFile(const QCString &fileName,int lineNr)
{
  struct yyguts_t *yyg = (struct yyguts_t*)p->yyscanner;
  yyextra->docGroup.leaveFile(fileName,lineNr);
}

void CommentScanner::enterCompound(const QCString &fileName,int lineNr,const QCString &name)
{
  struct yyguts_t *yyg = (struct yyguts_t*)p->yyscanner;
  yyextra->docGroup.enterCompound(fileName,lineNr,name);
}

void CommentScanner::leaveCompound(const QCString &fileName,int lineNr,const QCString &name)
{
  struct yyguts_t *yyg = (struct yyguts_t*)p->yyscanner;
  yyextra->docGroup.leaveCompound(fileName,lineNr,name);
}

void CommentScanner::open(Entry *e,const QCString &fileName,int lineNr,bool implicit)
{
  struct yyguts_t *yyg = (struct yyguts_t*)p->yyscanner;
  yyextra->docGroup.open(e,fileName,lineNr,implicit);
}

void CommentScanner::close(Entry *e,const QCString &fileName,int lineNr,bool foundInline,bool implicit)
{
  struct yyguts_t *yyg = (struct yyguts_t*)p->yyscanner;
  yyextra->docGroup.close(e,fileName,lineNr,foundInline,implicit);
}

#if USE_STATE2STRING
#include "commentscan.l.h"
#endif