all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
blob 9577f55e8789dd5b9e3c03fecdf542b64ca4e583 161753 bytes (raw)
name: lisp/progmodes/cc-langs.el 	 # note: path name is non-authoritative(*)

   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
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
 
;;; cc-langs.el --- language specific settings for CC Mode -*- coding: utf-8 -*-

;; Copyright (C) 1985, 1987, 1992-2020 Free Software Foundation, Inc.

;; Authors:    2002- Alan Mackenzie
;;             1998- Martin Stjernholm
;;             1992-1999 Barry A. Warsaw
;;             1987 Dave Detlefs
;;             1987 Stewart Clamen
;;             1985 Richard M. Stallman
;; Maintainer: bug-cc-mode@gnu.org
;; Created:    22-Apr-1997 (split from cc-mode.el)
;; Keywords:   c languages
;; Package:    cc-mode

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;; HACKERS NOTE: There's heavy macro magic here.  If you need to make
;; changes in this or other files containing `c-lang-defconst' but
;; don't want to read through the longer discussion below then read
;; this:
;;
;; o  A change in a `c-lang-defconst' or `c-lang-defvar' will not take
;;    effect if the file containing the mode init function (typically
;;    cc-mode.el) is byte compiled.
;; o  To make changes show in font locking you need to reevaluate the
;;    `*-font-lock-keywords-*' constants, which normally is easiest to
;;    do with M-x eval-buffer in cc-fonts.el.
;; o  In either case it's necessary to reinitialize the mode to make
;;    the changes show in an existing buffer.

;;; Introduction to the language dependent variable system:
;;
;; This file contains all the language dependent variables, except
;; those specific for font locking which reside in cc-fonts.el.  As
;; far as possible, all the differences between the languages that CC
;; Mode supports are described with these variables only, so that the
;; code can be shared.
;;
;; The language constant system (see cc-defs.el) is used to specify
;; various language dependent info at a high level, such as lists of
;; keywords, and then from them generate - at compile time - the
;; various regexps and other low-level structures actually employed in
;; the code at runtime.
;;
;; This system is also designed to make it easy for developers of
;; derived modes to customize the source constants for new language
;; variants, without having to keep up with the exact regexps etc that
;; are used in each CC Mode version.  It's possible from an external
;; package to add a new language by inheriting an existing one, and
;; then change specific constants as necessary for the new language.
;; The old values for those constants (and the values of all the other
;; high-level constants) may be used to build the new ones, and those
;; new values will in turn be used by the low-level definitions here
;; to build the runtime constants appropriately for the new language
;; in the current version of CC Mode.
;;
;; Like elsewhere in CC Mode, the existence of a doc string signifies
;; that a language constant is part of the external API, and that it
;; therefore can be used with a high confidence that it will continue
;; to work with future versions of CC Mode.  Even so, it's not
;; unlikely that such constants will change meaning slightly as this
;; system is refined further; a certain degree of dependence on the CC
;; Mode version is unavoidable when hooking in at this level.  Also
;; note that there's still work to be done to actually use these
;; constants everywhere inside CC Mode; there are still hardcoded
;; values in many places in the code.
;;
;; Separate packages will also benefit from the compile time
;; evaluation; the byte compiled file(s) for them will contain the
;; compiled runtime constants ready for use by (the byte compiled) CC
;; Mode, and the source definitions in this file don't have to be
;; loaded then.  However, if a byte compiled package is loaded that
;; has been compiled with a different version of CC Mode from the one
;; currently loaded, then the compiled-in values will be discarded and
;; new ones will be built when the mode is initialized.  That will
;; automatically trig a load of the file(s) containing the source
;; definitions (i.e. this file and/or cc-fonts.el) if necessary.
;;
;; A small example of a derived mode is available at
;; <http://cc-mode.sourceforge.net/derived-mode-ex.el>.  It also
;; contains some useful hints for derived mode developers.

;;; Using language variables:
;;
;; The `c-lang-defvar' forms in this file comprise the language
;; variables that CC Mode uses.  It does not work to use
;; `c-lang-defvar' anywhere else (which isn't much of a limitation
;; since these variables sole purpose is to interface with the CC Mode
;; core functions).  The values in these `c-lang-defvar's are not
;; evaluated right away but instead collected to a single large `setq'
;; that can be inserted for a particular language with the
;; `c-init-language-vars' macro.

;; This file is only required at compile time, or when not running
;; from byte compiled files, or when the source definitions for the
;; language constants are requested.

;;; Code:

;; For Emacs < 22.2.
(eval-and-compile
  (unless (fboundp 'declare-function) (defmacro declare-function (&rest _))))

(eval-when-compile
  (let ((load-path
	 (if (and (boundp 'byte-compile-dest-file)
		  (stringp byte-compile-dest-file))
	     (cons (file-name-directory byte-compile-dest-file) load-path)
	   load-path)))
    (load "cc-bytecomp" nil t)))

(cc-require 'cc-defs)
(cc-require 'cc-vars)


;; This file is not always loaded.  See note above.
(cc-external-require (if (eq c--cl-library 'cl-lib) 'cl-lib 'cl))

\f
;;; Setup for the `c-lang-defvar' system.

(eval-and-compile
  ;; These are used to collect the init forms from the subsequent
  ;; `c-lang-defvar' and `c-lang-setvar'.  They are used to build the
  ;;  lambda in `c-make-init-lang-vars-fun' below, and to build `defvar's
  ;;  and `make-variable-buffer-local's in cc-engine and
  ;;  `make-local-variable's in `c-init-language-vars-for'.
  (defvar c-lang-variable-inits nil)
  (defvar c-lang-variable-inits-tail nil)
  (setq c-lang-variable-inits (list nil)
	c-lang-variable-inits-tail c-lang-variable-inits)
  (defvar c-emacs-variable-inits nil)
  (defvar c-emacs-variable-inits-tail nil)
  (setq c-emacs-variable-inits (list nil)
	c-emacs-variable-inits-tail c-emacs-variable-inits))

(defmacro c-lang-defvar (var val &optional doc)
  "Declares the buffer local variable VAR to get the value VAL.  VAL is
evaluated and assigned at mode initialization.  More precisely, VAL is
evaluated and bound to VAR when the result from the macro
`c-init-language-vars' is evaluated.

`c-lang-const' is typically used in VAL to get the right value for the
language being initialized, and such calls will be macro expanded to
the evaluated constant value at compile time."

  (when (and (not doc)
	     (eq (car-safe val) 'c-lang-const)
	     (eq (nth 1 val) var)
	     (not (nth 2 val)))
    ;; Special case: If there's no docstring and the value is a
    ;; simple (c-lang-const foo) where foo is the same name as VAR
    ;; then take the docstring from the language constant foo.
    (setq doc (get (intern (symbol-name (nth 1 val)) c-lang-constants)
		   'variable-documentation)))
  (or (stringp doc)
      (setq doc nil))

  (let ((elem (assq var (cdr c-lang-variable-inits))))
    (if elem
	(setcdr elem (list val doc))
      (setcdr c-lang-variable-inits-tail (list (list var val doc)))
      (setq c-lang-variable-inits-tail (cdr c-lang-variable-inits-tail))))

  ;; Return the symbol, like the other def* forms.
  `',var)

(defmacro c-lang-setvar (var val)
  "Causes the variable VAR to be made buffer local and to get set to the
value VAL.  VAL is evaluated and assigned at mode initialization.  More
precisely, VAL is evaluated and bound to VAR when the result from the
macro `c-init-language-vars' is evaluated.  VAR is typically a standard
Emacs variable like `comment-start'.

`c-lang-const' is typically used in VAL to get the right value for the
language being initialized, and such calls will be macro expanded to
the evaluated constant value at compile time."
  (let ((elem (assq var (cdr c-emacs-variable-inits))))
    (if elem
	(setcdr elem (list val)) ; Maybe remove "list", sometime. 2006-07-19
      (setcdr c-emacs-variable-inits-tail (list (list var val)))
      (setq c-emacs-variable-inits-tail (cdr c-emacs-variable-inits-tail))))

  ;; Return the symbol, like the other def* forms.
  `',var)

(put 'c-lang-defvar 'lisp-indent-function 'defun)
; (eval-after-load "edebug" ; 2006-07-09: def-edebug-spec is now in subr.el.
;  '
(def-edebug-spec c-lang-defvar
  (&define name def-form &optional &or ("quote" symbolp) stringp))
(def-edebug-spec c-lang-setvar (&define name def-form))

;; Suppress "might not be defined at runtime" warning.
;; This file is only used when compiling other cc files.
(declare-function cl-delete-duplicates "cl-seq" (cl-seq &rest cl-keys))
(declare-function cl-intersection "cl-seq" (cl-list1 cl-list2 &rest cl-keys))
(declare-function cl-set-difference "cl-seq" (cl-list1 cl-list2 &rest cl-keys))

(eval-and-compile
  ;; Some helper functions used when building the language constants.

  (defun c-filter-ops (ops opgroup-filter op-filter &optional xlate)
    ;; Extract a subset of the operators in the list OPS in a DWIM:ey
    ;; way.  The return value is a plain list of operators:
    ;;
    ;; OPS either has the structure of `c-operators', is a single
    ;; group in `c-operators', or is a plain list of operators.
    ;;
    ;; OPGROUP-FILTER specifies how to select the operator groups.  It
    ;; can be t to choose all groups, a list of group type symbols
    ;; (such as 'prefix) to accept, or a function which will be called
    ;; with the group symbol for each group and should return non-nil
    ;; if that group is to be included.
    ;;
    ;; OP-FILTER selects the operators.  It is either t to select all
    ;; operators, a string to select all operators for which `string-match'
    ;; matches the operator with the string, or a function which will be
    ;; called with the operator and should return non-nil when the operator
    ;; is to be selected.
    ;;
    ;; If XLATE is given, it's a function which is called for each
    ;; matching operator and its return value is collected instead.
    ;; If it returns a list, the elements are spliced directly into
    ;; the final result, which is returned as a list with duplicates
    ;; removed using `equal'.
    ;;
    ;; `c-mode-syntax-table' for the current mode is in effect during
    ;; the whole procedure.
    (unless (listp (car-safe ops))
      (setq ops (list ops)))
    (cond ((eq opgroup-filter t)
	   (setq opgroup-filter (lambda (_opgroup) t)))
	  ((not (functionp opgroup-filter))
	   (setq opgroup-filter `(lambda (opgroup)
				   (memq opgroup ',opgroup-filter)))))
    (cond ((eq op-filter t)
	   (setq op-filter (lambda (_op) t)))
	  ((stringp op-filter)
	   (setq op-filter `(lambda (op)
			      (string-match ,op-filter op)))))
    (unless xlate
      (setq xlate 'identity))
    (c-with-syntax-table (c-lang-const c-mode-syntax-table)
      (c--delete-duplicates
       (c--mapcan (lambda (opgroup)
		    (when (if (symbolp (car opgroup))
			      (when (funcall opgroup-filter (car opgroup))
				(setq opgroup (cdr opgroup))
				t)
			    t)
		      (c--mapcan (lambda (op)
				   (when (funcall op-filter op)
				     (let ((res (funcall xlate op)))
				       (if (listp res) res (list res)))))
				 opgroup)))
		  ops)
       :test 'equal))))

\f
;;; Various mode specific values that aren't language related.

(c-lang-defconst c-mode-menu
  ;; The definition for the mode menu.  The menu title is prepended to
  ;; this before it's fed to `easy-menu-define'.
  t `(["Comment Out Region"     comment-region
       (c-fn-region-is-active-p)]
      ["Uncomment Region"       (comment-region (region-beginning)
						(region-end) '(4))
       (c-fn-region-is-active-p)]
      ["Indent Expression"      c-indent-exp
       (memq (char-after) '(?\( ?\[ ?\{))]
      ["Indent Line or Region"  c-indent-line-or-region t]
      ["Fill Comment Paragraph" c-fill-paragraph t]
      "----"
      ["Backward Statement"     c-beginning-of-statement t]
      ["Forward Statement"      c-end-of-statement t]
      ,@(when (c-lang-const c-opt-cpp-prefix)
	  ;; Only applicable if there's a cpp preprocessor.
	  '(["Up Conditional"         c-up-conditional t]
	    ["Backward Conditional"   c-backward-conditional t]
	    ["Forward Conditional"    c-forward-conditional t]
	    "----"
	    ["Macro Expand Region"    c-macro-expand
	     (c-fn-region-is-active-p)]
	    ["Backslashify"           c-backslash-region
	     (c-fn-region-is-active-p)]))
      "----"
      ("Style..."
       ["Set Style..."                   c-set-style t]
       ["Show Current Style Name"        (message
					  "Style Name: %s"
					  c-indentation-style)
                                         t]
       ["Guess Style from this Buffer"   c-guess-buffer-no-install t]
       ["Install the Last Guessed Style..." c-guess-install
	(and c-guess-guessed-offsets-alist
	     c-guess-guessed-basic-offset) ]
       ["View the Last Guessed Style"    c-guess-view
	(and c-guess-guessed-offsets-alist
	     c-guess-guessed-basic-offset) ])
      "----"
      ("Toggle..."
       ["Syntactic indentation" c-toggle-syntactic-indentation
	:style toggle :selected c-syntactic-indentation]
       ["Electric mode"         c-toggle-electric-state
	:style toggle :selected c-electric-flag]
       ["Auto newline"          c-toggle-auto-newline
	:style toggle :selected c-auto-newline]
       ["Hungry delete"         c-toggle-hungry-state
	:style toggle :selected c-hungry-delete-key]
       ["Subword mode"          c-subword-mode
	:style toggle :selected (and (boundp 'c-subword-mode)
                                     c-subword-mode)])))

\f
;;; Syntax tables.

(defun c-populate-syntax-table (table)
  "Populate the given syntax table as necessary for a C-like language.
This includes setting \\=' and \" as string delimiters, and setting up
the comment syntax to handle both line style \"//\" and block style
\"/*\" \"*/\" comments."

  (modify-syntax-entry ?_  "_"     table)
  (modify-syntax-entry ?\\ "\\"    table)
  (modify-syntax-entry ?+  "."     table)
  (modify-syntax-entry ?-  "."     table)
  (modify-syntax-entry ?=  "."     table)
  (modify-syntax-entry ?%  "."     table)
  (modify-syntax-entry ?<  "."     table)
  (modify-syntax-entry ?>  "."     table)
  (modify-syntax-entry ?&  "."     table)
  (modify-syntax-entry ?|  "."     table)
  (modify-syntax-entry ?\' "\""    table)
  (modify-syntax-entry ?\240 "."   table)

  ;; Set up block and line oriented comments.  The new C
  ;; standard mandates both comment styles even in C, so since
  ;; all languages now require dual comments, we make this the
  ;; default.
  (cond
   ;; XEmacs
   ((memq '8-bit c-emacs-features)
    (modify-syntax-entry ?/  ". 1456" table)
    (modify-syntax-entry ?*  ". 23"   table))
   ;; Emacs
   ((memq '1-bit c-emacs-features)
    (modify-syntax-entry ?/  ". 124b" table)
    (modify-syntax-entry ?*  ". 23"   table))
   ;; incompatible
   (t (error "CC Mode is incompatible with this version of Emacs")))

  (modify-syntax-entry ?\n "> b"  table)
  ;; Give CR the same syntax as newline, for selective-display
  (modify-syntax-entry ?\^m "> b" table))

(c-lang-defconst c-make-mode-syntax-table
  "Functions that generates the mode specific syntax tables.
The syntax tables aren't stored directly since they're quite large."
  t `(lambda ()
       (let ((table (make-syntax-table)))
	 (c-populate-syntax-table table)
	 ;; Mode specific syntaxes.
	 ,(cond ((or (c-major-mode-is 'objc-mode) (c-major-mode-is 'java-mode))
		 ;; Let '@' be part of symbols in ObjC to cope with
		 ;; its compiler directives as single keyword tokens.
		 ;; This is then necessary since it's assumed that
		 ;; every keyword is a single symbol.
		 '(modify-syntax-entry ?@ "_" table))
		((c-major-mode-is 'pike-mode)
		 '(modify-syntax-entry ?@ "." table)))
	 table)))

(c-lang-defconst c-mode-syntax-table
  ;; The syntax tables in evaluated form.  Only used temporarily when
  ;; the constants in this file are evaluated.
  t (funcall (c-lang-const c-make-mode-syntax-table)))

(c-lang-defconst c-make-no-parens-syntax-table
  ;; A variant of the standard syntax table which is used to find matching
  ;; "<"s and ">"s which have been marked as parens using syntax table
  ;; properties.  The other paren characters (e.g. "{", ")" "]") are given a
  ;; non-paren syntax here. so that the list commands will work on "< ... >"
  ;; even when there's unbalanced other parens inside them.
  ;;
  ;; This variable is nil for languages which don't have template stuff.
  t  (if (c-lang-const c-recognize-<>-arglists)
     `(lambda ()
	;(if (c-lang-const c-recognize-<>-arglists)
	(let ((table (funcall ,(c-lang-const c-make-mode-syntax-table))))
	  (modify-syntax-entry ?\( "." table)
	  (modify-syntax-entry ?\) "." table)
	  (modify-syntax-entry ?\[ "." table)
	  (modify-syntax-entry ?\] "." table)
	  (modify-syntax-entry ?\{ "." table)
	  (modify-syntax-entry ?\} "." table)
	  table))))
(c-lang-defvar c-no-parens-syntax-table
  (and (c-lang-const c-make-no-parens-syntax-table)
       ;; See comment in `c++template-syntax-table' about the next `eval'.
       (funcall (eval (c-lang-const c-make-no-parens-syntax-table)))))

(c-lang-defconst c-identifier-syntax-modifications
  "A list that describes the modifications that should be done to the
mode syntax table to get a syntax table that matches all identifiers
and keywords as words.

The list is just like the one used in `font-lock-defaults': Each
element is a cons where the car is the character to modify and the cdr
the new syntax, as accepted by `modify-syntax-entry'."
  ;; The $ character is not allowed in most languages (one exception
  ;; is Java which allows it for legacy reasons) but we still classify
  ;; it as an identifier character since it's often used in various
  ;; machine generated identifiers.
  t    '((?_ . "w") (?$ . "w"))
  (objc java) (append '((?@ . "w"))
	       (c-lang-const c-identifier-syntax-modifications))
  awk  '((?_ . "w")))
(c-lang-defvar c-identifier-syntax-modifications
  (c-lang-const c-identifier-syntax-modifications))

(c-lang-defvar c-identifier-syntax-table
  (let ((table (copy-syntax-table (c-mode-var "mode-syntax-table")))
	(mods c-identifier-syntax-modifications)
	mod)
    (while mods
      (setq mod (car mods)
	    mods (cdr mods))
      (modify-syntax-entry (car mod) (cdr mod) table))
    table)
  "Syntax table built on the mode syntax table but additionally
classifies symbol constituents like `_' and `$' as word constituents,
so that all identifiers are recognized as words.")

(c-lang-defconst c-get-state-before-change-functions
  ;; For documentation see the following c-lang-defvar of the same name.
  ;; The value here may be a list of functions or a single function.
  t 'c-before-change-check-unbalanced-strings
  c++ '(c-extend-region-for-CPP
	c-before-change-check-raw-strings
	c-before-change-check-<>-operators
	c-depropertize-CPP
	c-truncate-bs-cache
	c-before-change-check-unbalanced-strings
	c-parse-quotes-before-change)
  (c objc) '(c-extend-region-for-CPP
	     c-depropertize-CPP
	     c-truncate-bs-cache
	     c-before-change-check-unbalanced-strings
	     c-parse-quotes-before-change)
  java '(c-parse-quotes-before-change
	 c-before-change-check-unbalanced-strings
	 c-before-change-check-<>-operators)
  awk 'c-awk-record-region-clear-NL)
(c-lang-defvar c-get-state-before-change-functions
	       (let ((fs (c-lang-const c-get-state-before-change-functions)))
		  (if (listp fs)
		      fs
		    (list fs)))
  "If non-nil, a list of functions called from c-before-change-hook.
Typically these will record enough state to allow
`c-before-font-lock-functions' to extend the region to fontify,
and may do such things as removing text-properties which must be
recalculated.

These functions will be run in the order given.  Each of them
takes 2 parameters, the BEG and END supplied to every
before-change function; on entry, the buffer will have been
widened and match-data will have been saved; point is undefined
on both entry and exit; the return value is ignored.

The functions are called even when font locking isn't enabled.

When the mode is initialized, the functions are called with
parameters \(point-min) and \(point-max).")

(c-lang-defconst c-before-font-lock-functions
  ;; For documentation see the following c-lang-defvar of the same name.
  ;; The value here may be a list of functions or a single function.
  t '(c-depropertize-new-text
      c-after-change-escape-NL-in-string
      c-after-change-mark-abnormal-strings
      c-change-expand-fl-region)
  (c objc) '(c-depropertize-new-text
	     c-after-change-escape-NL-in-string
	     c-parse-quotes-after-change
	     c-after-change-mark-abnormal-strings
	     c-extend-font-lock-region-for-macros
	     c-neutralize-syntax-in-CPP
	     c-change-expand-fl-region)
  c++ '(c-depropertize-new-text
	c-after-change-escape-NL-in-string
	c-after-change-unmark-raw-strings
	c-parse-quotes-after-change
	c-after-change-mark-abnormal-strings
	c-extend-font-lock-region-for-macros
	c-neutralize-syntax-in-CPP
	c-restore-<>-properties
	c-change-expand-fl-region)
  java '(c-depropertize-new-text
	 c-after-change-escape-NL-in-string
	 c-parse-quotes-after-change
	 c-after-change-mark-abnormal-strings
	 c-restore-<>-properties
	 c-change-expand-fl-region)
  awk '(c-depropertize-new-text
	c-awk-extend-and-syntax-tablify-region))
(c-lang-defvar c-before-font-lock-functions
	       (let ((fs (c-lang-const c-before-font-lock-functions)))
		 (if (listp fs)
		     fs
		   (list fs)))
  "If non-nil, a list of functions called just before font locking.
Typically they will extend the region about to be fontified \(see
below) and will set `syntax-table' text properties on the region.

These functions will be run in the order given.  Each of them
takes 3 parameters, the BEG, END, and OLD-LEN supplied to every
after-change function; point is undefined on both entry and exit;
on entry, the buffer will have been widened and match-data will
have been saved; the return value is ignored.

The functions may extend the region to be fontified by setting the
buffer local variables c-new-BEG and c-new-END.

The functions are called even when font locking is disabled.

When the mode is initialized, these functions are called with
parameters (point-min), (point-max) and <buffer size>.")

(c-lang-defconst c-before-context-fontification-functions
  t 'c-context-expand-fl-region
  awk 'c-awk-context-expand-fl-region)
  ;; For documentation see the following c-lang-defvar of the same name.
  ;; The value here may be a list of functions or a single function.
(c-lang-defvar c-before-context-fontification-functions
  (let ((fs (c-lang-const c-before-context-fontification-functions)))
    (if (listp fs)
	fs
      (list fs)))
  "If non-nil, a list of functions called just before context (or
other non-change) fontification is done.  Typically they will
extend the region.

These functions will be run in the order given.  Each of them
takes 2 parameters, the BEG and END of the region to be
fontified.  Point is undefined on both entry and exit.  On entry,
the buffer will have been widened and match-data will have been
saved; the return value is a cons of the adjusted
region, (NEW-BEG . NEW-END).")

\f
;;; Syntactic analysis ("virtual semicolons") for line-oriented languages (AWK).
(c-lang-defconst c-at-vsemi-p-fn
  "Contains a function \"Is there a virtual semicolon at POS or point?\".
Such a function takes one optional parameter, a buffer position (defaults to
point), and returns nil or t.  This variable contains nil for languages which
don't have EOL terminated statements. "
  t nil
  (c c++ objc) 'c-at-macro-vsemi-p
  awk 'c-awk-at-vsemi-p)
(c-lang-defvar c-at-vsemi-p-fn (c-lang-const c-at-vsemi-p-fn))

(c-lang-defconst c-vsemi-status-unknown-p-fn
  "Contains a predicate regarding the presence of virtual semicolons.
More precisely, the function answers the question, \"are we unsure whether a
virtual semicolon exists on this line?\".  The (admittedly kludgy) purpose of
such a function is to prevent an infinite recursion in
`c-beginning-of-statement-1' when point starts at a `while' token.  The function
MUST NOT UNDER ANY CIRCUMSTANCES call `c-beginning-of-statement-1', even
indirectly.  This variable contains nil for languages which don't have EOL
terminated statements."
  t nil
  (c c++ objc) 'c-macro-vsemi-status-unknown-p
  awk 'c-awk-vsemi-status-unknown-p)
(c-lang-defvar c-vsemi-status-unknown-p-fn
  (c-lang-const c-vsemi-status-unknown-p-fn))

\f
;;; Lexer-level syntax (identifiers, tokens etc).

(c-lang-defconst c-has-bitfields
  "Whether the language has bitfield declarations."
  t nil
  (c c++ objc) t)
(c-lang-defvar c-has-bitfields (c-lang-const c-has-bitfields))

(c-lang-defconst c-single-quotes-quote-strings
  "Whether the language uses single quotes for multi-char strings.

Note that to set up a language to use this, additionally:
\(i) the syntax of \"'\" must be \"string quote\" (7);
\(ii) the language's value of `c-has-quoted-numbers' must be nil;
\(iii) the language's value of `c-get-state-before-change-functions' may not
  contain `c-parse-quotes-before-change';
\(iv) the language's value of `c-before-font-lock-functions' may not contain
  `c-parse-quotes-after-change'."
  t nil)
(c-lang-defvar c-single-quotes-quote-strings
	       (c-lang-const c-single-quotes-quote-strings))

(c-lang-defconst c-string-delims
;; A list of characters which can delimit arbitrary length strings.
  t (if (c-lang-const c-single-quotes-quote-strings)
	'(?\" ?\')
      '(?\")))
(c-lang-defvar c-string-delims (c-lang-const c-string-delims))

(c-lang-defconst c-has-quoted-numbers
  "Whether the language has numbers quoted like 4'294'967'295."
  t nil
  c++ t)
(c-lang-defvar c-has-quoted-numbers (c-lang-const c-has-quoted-numbers))

(c-lang-defconst c-has-compound-literals
  "Whether literal initializers {...} are used other than in initializations."
  t nil
  (c c++) t)
(c-lang-defvar c-has-compound-literals (c-lang-const c-has-compound-literals))

(c-lang-defconst c-modified-constant
  "Regexp that matches a “modified” constant literal such as \"L\\='a\\='\",
a “long character”.  In particular, this recognizes forms of constant
which `c-backward-sexp' needs to be called twice to move backwards over."
  t nil
  (c c++ objc) "L'\\([^\\'\t\f\n\r]\\|\\\\.\\)'")
;; FIXME!!!  Extend this to cover strings, if needed.  2008-04-11
(c-lang-defvar c-modified-constant (c-lang-const c-modified-constant))

(c-lang-defconst c-symbol-start
  "Regexp that matches the start of a symbol, i.e. any identifier or
keyword.  It's unspecified how far it matches.  Does not contain a \\|
operator at the top level."
  t    (concat "[" c-alpha "_]")
  java (concat "[" c-alpha "_@]")
  objc (concat "[" c-alpha "_@]")
  pike (concat "[" c-alpha "_`]"))
(c-lang-defvar c-symbol-start (c-lang-const c-symbol-start))

(c-lang-defconst c-symbol-chars
  "Set of characters that can be part of a symbol.
This is of the form that fits inside [ ] in a regexp."
  ;; Pike note: With the backquote identifiers this would include most
  ;; operator chars too, but they are handled with other means instead.
  t    (concat c-alnum "_$")
  objc (concat c-alnum "_$@"))
(c-lang-defvar c-symbol-chars (c-lang-const c-symbol-chars))

(c-lang-defconst c-symbol-char-key
  "Regexp matching a sequence of at least one identifier character."
  t (concat "[" (c-lang-const c-symbol-chars) "]+"))
(c-lang-defvar c-symbol-char-key (c-lang-const c-symbol-char-key))

(c-lang-defconst c-symbol-key
  "Regexp matching identifiers and keywords (with submatch 0).  Assumed
to match if `c-symbol-start' matches on the same position."
  t    (concat (c-lang-const c-symbol-start)
	       "[" (c-lang-const c-symbol-chars) "]*")
  pike (concat
	;; Use the value from C here since the operator backquote is
	;; covered by the other alternative.
	(c-lang-const c-symbol-key c)
	"\\|"
	(c-make-keywords-re nil
	  (c-lang-const c-overloadable-operators))))
(c-lang-defvar c-symbol-key (c-lang-const c-symbol-key))

(c-lang-defconst c-symbol-key-depth
  ;; Number of regexp grouping parens in `c-symbol-key'.
  t (regexp-opt-depth (c-lang-const c-symbol-key)))

(c-lang-defconst c-nonsymbol-chars
  "This is the set of chars that can't be part of a symbol, i.e. the
negation of `c-symbol-chars'."
  t (concat "^" (c-lang-const c-symbol-chars)))
(c-lang-defvar c-nonsymbol-chars (c-lang-const c-nonsymbol-chars))

(c-lang-defconst c-nonsymbol-key
  "Regexp that matches any character that can't be part of a symbol.
It's usually appended to other regexps to avoid matching a prefix.
It's assumed to not contain any submatchers."
  ;; The same thing regarding Unicode identifiers applies here as to
  ;; `c-symbol-key'.
  t (concat "[" (c-lang-const c-nonsymbol-chars) "]"))
(c-lang-defvar c-nonsymbol-key (c-lang-const c-nonsymbol-key))

(c-lang-defconst c-identifier-ops
  "The operators that make up fully qualified identifiers.  nil in
languages that don't have such things.  See `c-operators' for a
description of the format.  Binary operators can concatenate symbols,
e.g. \"::\" in \"A::B::C\".  Prefix operators can precede identifiers,
e.g. \"~\" in \"~A::B\".  Other types of operators aren't supported.

This value is by default merged into `c-operators'."
  t    nil
  c++  '((prefix "~" "??-" "compl")
	 (right-assoc "::")
	 (prefix "::"))
  ;; Java has "." to concatenate identifiers but it's also used for
  ;; normal indexing.  There's special code in the Java font lock
  ;; rules to fontify qualified identifiers based on the standard
  ;; naming conventions.  We still define "." here to make
  ;; `c-forward-name' move over as long names as possible which is
  ;; necessary to e.g. handle throws clauses correctly.
  java '((left-assoc "."))
  idl  '((left-assoc "::")
	 (prefix "::"))
  pike '((left-assoc "::")
	 (prefix "::")
	 (left-assoc ".")))

(c-lang-defconst c-opt-identifier-concat-key
  ;; Appendable adorned regexp matching the operators that join
  ;; symbols to fully qualified identifiers, or nil in languages that
  ;; don't have such things.
  ;;
  ;; This was a docstring constant in 5.30.  It still works but is now
  ;; considered internal - change `c-identifier-ops' instead.
  t (let ((ops (c-filter-ops (c-lang-const c-identifier-ops)
			     '(left-assoc right-assoc)
			     t)))
      (when ops
	(c-make-keywords-re 'appendable ops))))
(c-lang-defvar c-opt-identifier-concat-key
  (c-lang-const c-opt-identifier-concat-key))

(c-lang-defconst c-opt-identifier-concat-key-depth
  ;; Number of regexp grouping parens in `c-opt-identifier-concat-key'.
  t (regexp-opt-depth (c-lang-const c-opt-identifier-concat-key)))

(c-lang-defconst c-opt-identifier-prefix-key
  ;; Appendable adorned regexp matching operators that might precede
  ;; an identifier and that are part of the identifier in that case.
  ;; nil in languages without such things.
  t (let ((ops (c-filter-ops (c-lang-const c-identifier-ops)
			     '(prefix)
			     t)))
      (when ops
	(c-make-keywords-re 'appendable ops))))

(c-lang-defconst c-after-id-concat-ops
  "Operators that can occur after a binary operator on `c-identifier-ops'
in identifiers.  nil in languages that don't have such things.

Operators here should also have appropriate entries in `c-operators' -
it's not taken care of by default."
  t    nil
  ;; '~' for destructors in C++, '*' for member pointers.
  c++  '("~" "*")
  ;; In Java we recognize '*' to deal with "foo.bar.*" that can occur
  ;; in import declarations.  (This will also match bogus things like
  ;; "foo.*bar" but we don't bother.)
  java '("*"))

(c-lang-defconst c-opt-after-id-concat-key
  ;; Regexp that must match the token after
  ;; `c-opt-identifier-concat-key' for it to be considered an
  ;; identifier concatenation operator (which e.g. causes the
  ;; preceding identifier to be fontified as a reference).  Assumed to
  ;; be a string if `c-opt-identifier-concat-key' is.
  ;;
  ;; This was a docstring constant in 5.30.  It still works but is now
  ;; considered internal - change `c-after-id-concat-ops' instead.
  t (concat (c-lang-const c-symbol-start)
	    (if (c-lang-const c-after-id-concat-ops)
		(concat "\\|" (c-make-keywords-re 'appendable
				(c-lang-const c-after-id-concat-ops)))
	      "")))

(c-lang-defconst c-identifier-start
  "Regexp that matches the start of an (optionally qualified) identifier.
It should also match all keywords.  It's unspecified how far it
matches."
  t (concat (c-lang-const c-symbol-start)
	    (if (c-lang-const c-opt-identifier-prefix-key)
		(concat "\\|"
			(c-lang-const c-opt-identifier-prefix-key))
	      "")))
(c-lang-defvar c-identifier-start (c-lang-const c-identifier-start))

(c-lang-defconst c-identifier-key
  "Regexp matching a fully qualified identifier, like \"A::B::c\" in
C++.  It does not recognize the full range of syntactic whitespace
between the tokens; `c-forward-name' has to be used for that.  It
should also not match identifiers containing parenthesis groupings,
e.g. identifiers with template arguments such as \"A<X,Y>\" in C++."
  ;; This regexp is more complex than strictly necessary to ensure
  ;; that it can be matched with a minimum of backtracking.
  t (concat (if (c-lang-const c-opt-identifier-prefix-key)
		(concat
		 "\\("
		 (c-lang-const c-opt-identifier-prefix-key)
		 (c-lang-const c-simple-ws) "*"
		 "\\)?")
	      "")
	    "\\(" (c-lang-const c-symbol-key) "\\)"
	    (if (c-lang-const c-opt-identifier-concat-key)
		(concat
		 "\\("
		 (c-lang-const c-simple-ws) "*"
		 (c-lang-const c-opt-identifier-concat-key)
		 (c-lang-const c-simple-ws) "*"
		 (if (c-lang-const c-after-id-concat-ops)
		     (concat
		      "\\("
		       (c-make-keywords-re 'appendable
			 (c-lang-const c-after-id-concat-ops))
		      (concat
		       ;; For flexibility, consider the symbol match
		       ;; optional if we've hit a
		       ;; `c-after-id-concat-ops' operator.  This is
		       ;; also necessary to handle the "*" that can
		       ;; end import declaration identifiers in Java.
		       "\\("
		       (c-lang-const c-simple-ws) "*"
		       "\\(" (c-lang-const c-symbol-key) "\\)"
		       "\\)?")
		      "\\|"
		      "\\(" (c-lang-const c-symbol-key) "\\)"
		      "\\)")
		   (concat "\\(" (c-lang-const c-symbol-key) "\\)"))
		 "\\)*")
	      "")))
(c-lang-defvar c-identifier-key (c-lang-const c-identifier-key))

(c-lang-defconst c-identifier-last-sym-match
  ;; This was a docstring constant in 5.30 but it's no longer used.
  ;; It's only kept to avoid breaking third party code.
  ;;
  ;; Used to identify the submatch in `c-identifier-key' that
  ;; surrounds the last symbol in the qualified identifier.  It's a
  ;; list of submatch numbers, of which the first that has a match is
  ;; taken.  It's assumed that at least one does when the regexp has
  ;; matched.
  t nil)

(c-lang-defconst c-string-escaped-newlines
  "Set if the language support backslash escaped newlines inside string
literals."
  t nil
  (c c++ objc pike) t)
(c-lang-defvar c-string-escaped-newlines
  (c-lang-const c-string-escaped-newlines))

(c-lang-defconst c-multiline-string-start-char
  "Set if the language supports multiline string literals without escaped
newlines.  If t, all string literals are multiline.  If a character,
only literals where the open quote is immediately preceded by that
literal are multiline."
  t    nil
  pike ?#)
(c-lang-defvar c-multiline-string-start-char
  (c-lang-const c-multiline-string-start-char))

(c-lang-defconst c-string-innards-re-alist
  ;; An alist of regexps matching the innards of a string, the key being the
  ;; string's delimiter.
  ;;
  ;; The regexps' matches extend up to, but not including, the closing string
  ;; delimiter or an unescaped NL.  An EOL is part of the string only if it is
  ;; escaped.
  t (mapcar (lambda (delim)
	      (cons
	       delim
	       (concat "\\(\\\\\\(.\\|\n\\)\\|[^\\\n\r"
		       (string delim)
		       "]\\)*")))
	    (and
	     (or (null (c-lang-const c-multiline-string-start-char))
		 (c-characterp (c-lang-const c-multiline-string-start-char)))
	     (if (c-lang-const c-single-quotes-quote-strings)
		 '(?\" ?\')
	       '(?\")))))
(c-lang-defvar c-string-innards-re-alist
  (c-lang-const c-string-innards-re-alist))

(c-lang-defconst c-opt-cpp-symbol
  "The symbol which starts preprocessor constructs when in the margin."
  t "#"
  (java awk) nil)
(c-lang-defvar c-opt-cpp-symbol (c-lang-const c-opt-cpp-symbol))

(c-lang-defconst c-opt-cpp-prefix
  "Regexp matching the prefix of a cpp directive in the languages that
normally use that macro preprocessor.  Tested at bol or at boi.
Assumed to not contain any submatches or \\| operators."
  ;; TODO (ACM, 2005-04-01).  Amend the following to recognize escaped NLs;
  ;; amend all uses of c-opt-cpp-prefix which count regexp-depth.
  t "\\s *#\\s *"
  (java awk) nil)
(c-lang-defvar c-opt-cpp-prefix (c-lang-const c-opt-cpp-prefix))

(c-lang-defconst c-anchored-cpp-prefix
  "Regexp matching the prefix of a cpp directive anchored to BOL,
in the languages that have a macro preprocessor."
  t "^\\s *\\(#\\)\\s *"
  (java awk) nil)
(c-lang-defvar c-anchored-cpp-prefix (c-lang-const c-anchored-cpp-prefix))

(c-lang-defconst c-opt-cpp-start
  "Regexp matching the prefix of a cpp directive including the directive
name, or nil in languages without preprocessor support.  The first
submatch surrounds the directive name."
  t    (if (c-lang-const c-opt-cpp-prefix)
	   (concat (c-lang-const c-opt-cpp-prefix)
		   "\\([" c-alnum "]+\\)"))
  ;; Pike, being a scripting language, recognizes hash-bangs too.
  pike (concat (c-lang-const c-opt-cpp-prefix)
	       "\\([" c-alnum "]+\\|!\\)"))
(c-lang-defvar c-opt-cpp-start (c-lang-const c-opt-cpp-start))

(c-lang-defconst c-cpp-message-directives
  "List of cpp directives (without the prefix) that are followed by a
string message."
  t    (if (c-lang-const c-opt-cpp-prefix)
	   '("error"))
  (c c++ objc pike) '("error" "warning"))

(c-lang-defconst c-cpp-include-directives
  "List of cpp directives (without the prefix) that are followed by a
file name in angle brackets or quotes."
  t    (if (c-lang-const c-opt-cpp-prefix)
	   '("include"))
  objc '("include" "import"))

(c-lang-defconst c-cpp-include-key
  ;; Matches an include directive anchored at BOL including any trailing
  ;; whitespace, e.g. " # include  "
  t (if (and (c-lang-const c-anchored-cpp-prefix)
	     (c-lang-const c-cpp-include-directives))
	(concat
	 (c-lang-const c-anchored-cpp-prefix)
	 (c-make-keywords-re 'appendable
	   (c-lang-const c-cpp-include-directives))
	 "[ \t]*")
      regexp-unmatchable))
(c-lang-defvar c-cpp-include-key (c-lang-const c-cpp-include-key))

(c-lang-defconst c-opt-cpp-macro-define
  "Cpp directive (without the prefix) that is followed by a macro
definition, or nil if the language doesn't have any."
  t (if (c-lang-const c-opt-cpp-prefix)
	"define"))
(c-lang-defvar c-opt-cpp-macro-define
  (c-lang-const c-opt-cpp-macro-define))

(c-lang-defconst c-opt-cpp-macro-define-start
  ;; Regexp matching everything up to the macro body of a cpp define, or the
  ;; end of the logical line if there is none.  Submatch 1 is the name of the
  ;; macro.  Set if c-opt-cpp-macro-define is.
  t (if (c-lang-const c-opt-cpp-macro-define)
	(concat (c-lang-const c-opt-cpp-prefix)
		(c-lang-const c-opt-cpp-macro-define)
		"[ \t]+\\(\\(\\sw\\|_\\)+\\)\\(([^)]*)\\)?"
		;;       ^                 ^ #defined name
		"\\([ \t]\\|\\\\\n\\)*")))
(c-lang-defvar c-opt-cpp-macro-define-start
  (c-lang-const c-opt-cpp-macro-define-start))

(c-lang-defconst c-opt-cpp-macro-define-id
  ;; Regexp matching everything up to the end of the identifier defined
  ;; by a cpp define.
  t (if (c-lang-const c-opt-cpp-macro-define)
	(concat (c-lang-const c-opt-cpp-prefix)	; #
		(c-lang-const c-opt-cpp-macro-define) ; define
		"[ \t]+\\(\\sw\\|_\\)+")))
(c-lang-defvar c-opt-cpp-macro-define-id
  (c-lang-const c-opt-cpp-macro-define-id))

(c-lang-defconst c-anchored-hash-define-no-parens
  ;; Regexp matching everything up to the end of a cpp define which has no
  ;; argument parentheses.  Or nil in languages which don't have them.
  t (if (c-lang-const c-opt-cpp-macro-define)
	(concat (c-lang-const c-anchored-cpp-prefix)
		(c-lang-const c-opt-cpp-macro-define)
		"[ \t]+\\(\\sw\\|_\\)+\\([^(a-zA-Z0-9_]\\|$\\)")))

(c-lang-defconst c-cpp-expr-directives
  "List of cpp directives (without the prefix) that are followed by an
expression."
  t (if (c-lang-const c-opt-cpp-prefix)
	'("if" "elif")))

(c-lang-defconst c-cpp-expr-intro-re
  "Regexp which matches the start of a CPP directive which contains an
expression, or nil if there aren't any in the language."
  t (if (c-lang-const c-cpp-expr-directives)
	(concat
	 (c-lang-const c-opt-cpp-prefix)
	 (c-make-keywords-re t (c-lang-const c-cpp-expr-directives)))))
(c-lang-defvar c-cpp-expr-intro-re
  (c-lang-const c-cpp-expr-intro-re))

(c-lang-defconst c-cpp-expr-functions
  "List of functions in cpp expressions."
  t    (if (c-lang-const c-opt-cpp-prefix)
	   '("defined"))
  pike '("defined" "efun" "constant"))

(c-lang-defconst c-cpp-expr-functions-key
  ;; Matches a function in a cpp expression.
  t (c-make-keywords-re t (c-lang-const c-cpp-expr-functions)))
(c-lang-defvar c-cpp-expr-functions-key (c-lang-const c-cpp-expr-functions-key))

(c-lang-defconst c-assignment-operators
  "List of all assignment operators."
  t    '("=" "*=" "/=" "%=" "+=" "-=" ">>=" "<<=" "&=" "^=" "|=")
  java (append (c-lang-const c-assignment-operators)
	       '(">>>="))
  c++  (append (c-lang-const c-assignment-operators)
	       '("and_eq" "or_eq" "xor_eq" "??!=" "??'="))
  idl  nil)

(c-lang-defconst c-operators
  "List describing all operators, along with their precedence and
associativity.  The order in the list corresponds to the precedence of
the operators: The operators in each element are a group with the same
precedence, and the group has higher precedence than the groups in all
following elements.  The car of each element describes the type of the
operator group, and the cdr is a list of the operator tokens in it.
The operator group types are:

`prefix'        Unary prefix operators.
`postfix'       Unary postfix operators.
`postfix-if-paren'
		Unary postfix operators if and only if the chars have
		parenthesis syntax.
`left-assoc'    Binary left associative operators (i.e. a+b+c means (a+b)+c).
`right-assoc'   Binary right associative operators (i.e. a=b=c means a=(b=c)).
`right-assoc-sequence'
                Right associative operator that constitutes of a
                sequence of tokens that separate expressions.  All the
                tokens in the group are in this case taken as
                describing the sequence in one such operator, and the
                order between them is therefore significant.

Operators containing a character with paren syntax are taken to match
with a corresponding open/close paren somewhere else.  A postfix
operator with close paren syntax is taken to end a postfix expression
started somewhere earlier, rather than start a new one at point.  Vice
versa for prefix operators with open paren syntax.

Note that operators like \".\" and \"->\" which in language references
often are described as postfix operators are considered binary here,
since CC Mode treats every identifier as an expression."

  ;; There's currently no code in CC Mode that exploits all the info
  ;; in this variable; precedence, associativity etc are present as a
  ;; preparation for future work.

  ;; FIXME!!!  C++11's "auto" operators "=" and "->" need to go in here
  ;; somewhere.  2012-03-24.

  t `(;; Preprocessor.
      ,@(when (c-lang-const c-opt-cpp-prefix)
	  `((prefix "#"
		    ,@(when (c-major-mode-is '(c-mode c++-mode))
			'("%:" "??=")))
	    (left-assoc "##"
			,@(when (c-major-mode-is '(c-mode c++-mode))
			    '("%:%:" "??=??=")))))

      ;; Primary.
      ,@(c-lang-const c-identifier-ops)
      ,@(cond ((or (c-major-mode-is 'c++-mode) (c-major-mode-is 'java-mode))
	       '((postfix-if-paren "<" ">"))) ; Templates.
	      ((c-major-mode-is 'pike-mode)
	       '((prefix "global" "predef")))
	      ((c-major-mode-is 'java-mode)
	       '((prefix "super"))))

      ;; Postfix.
      ,@(when (c-major-mode-is 'c++-mode)
	  ;; The following need special treatment.
	  '((prefix "dynamic_cast" "static_cast"
		    "reinterpret_cast" "const_cast" "typeid"
                    "alignof")))
      (left-assoc "."
		  ,@(unless (c-major-mode-is 'java-mode)
		      '("->")))
      (postfix "++" "--" "[" "]" "(" ")"
	       ,@(when (c-major-mode-is '(c-mode c++-mode))
		   '("<:" ":>" "??(" "??)")))

      ;; Unary.
      (prefix "++" "--" "+" "-" "!" "~"
	      ,@(when (c-major-mode-is 'c++-mode) '("not" "compl"))
	      ,@(when (c-major-mode-is '(c-mode c++-mode))
		  '("*" "&" "sizeof" "??-"))
	      ,@(when (c-major-mode-is 'objc-mode)
		  '("@selector" "@protocol" "@encode"))
	      ;; The following need special treatment.
	      ,@(cond ((c-major-mode-is 'c++-mode)
		       '("new" "delete"))
		      ((c-major-mode-is 'java-mode)
		       '("new"))
		      ((c-major-mode-is 'pike-mode)
		       '("class" "lambda" "catch" "throw" "gauge")))
	      "(" ")"			; Cast.
	      ,@(when (c-major-mode-is 'pike-mode)
		  '("[" "]")))		; Type cast.

      ;; Member selection.
      ,@(when (c-major-mode-is 'c++-mode)
	  '((left-assoc ".*" "->*")))

      ;; Multiplicative.
      (left-assoc "*" "/" "%")

      ;; Additive.
      (left-assoc "+" "-")

      ;; Shift.
      (left-assoc "<<" ">>"
		  ,@(when (c-major-mode-is 'java-mode)
		      '(">>>")))

      ;; Relational.
      (left-assoc "<" ">" "<=" ">="
		  ,@(when (c-major-mode-is 'java-mode)
		      '("instanceof")))

      ;; Equality.
      (left-assoc "==" "!="
		  ,@(when (c-major-mode-is 'c++-mode) '("not_eq")))

      ;; Bitwise and.
      (left-assoc "&"
		  ,@(when (c-major-mode-is 'c++-mode) '("bitand")))

      ;; Bitwise exclusive or.
      (left-assoc "^"
		  ,@(when (c-major-mode-is '(c-mode c++-mode))
		      '("??'"))
		  ,@(when (c-major-mode-is 'c++-mode) '("xor")))

      ;; Bitwise or.
      (left-assoc "|"
		  ,@(when (c-major-mode-is '(c-mode c++-mode))
		      '("??!"))
		  ,@(when (c-major-mode-is 'c++-mode) '("bitor")))

      ;; Logical and.
      (left-assoc "&&"
		  ,@(when (c-major-mode-is 'c++-mode) '("and")))

      ;; Logical or.
      (left-assoc "||"
		  ,@(when (c-major-mode-is '(c-mode c++-mode))
		      '("??!??!"))
		  ,@(when (c-major-mode-is 'c++-mode) '("or")))

      ;; Conditional.
      (right-assoc-sequence "?" ":")

      ;; Assignment.
      (right-assoc ,@(c-lang-const c-assignment-operators))

      ;; Exception.
      ,@(when (c-major-mode-is 'c++-mode)
	  '((prefix "throw" "co_await" "co_yield")))

      ;; Sequence.
      (left-assoc ","))

  ;; IDL got its own definition since it has a much smaller operator
  ;; set than the other languages.
  idl `(;; Preprocessor.
	(prefix "#")
	(left-assoc "##")
	;; Primary.
	,@(c-lang-const c-identifier-ops)
	;; Unary.
	(prefix  "+" "-" "~")
	;; Multiplicative.
	(left-assoc "*" "/" "%")
	;; Additive.
	(left-assoc "+" "-")
	;; Shift.
	(left-assoc "<<" ">>")
	;; And.
	(left-assoc "&")
	;; Xor.
	(left-assoc "^")
	;; Or.
	(left-assoc "|")))

(c-lang-defconst c-operator-list
  ;; The operators as a flat list (without duplicates).
  t (c-filter-ops (c-lang-const c-operators) t t))

(c-lang-defconst c-operator-re
  ;; A regexp which matches any operator.
  t (regexp-opt (c-lang-const c-operator-list)))
(c-lang-defvar c-operator-re (c-lang-const c-operator-re))

(c-lang-defconst c-bin-tern-operators
  ;; All binary and ternary operators
  t (c-filter-ops (c-lang-const c-operators)
		  '(left-assoc right-assoc right-assoc-sequence)
		  t))

(c-lang-defconst c-unary-operators
  ;; All unary operators.
  t (c-filter-ops (c-lang-const c-operators)
		  '(prefix postfix postfix-if-paren)
		  t))

(c-lang-defconst c-non-after-{}-operators
  "Operators which can't appear after a block {..} construct."
  t (c--set-difference (c-lang-const c-bin-tern-operators)
		       (c-lang-const c-unary-operators)
		       :test #'string-equal)
  awk (remove "/" (c-lang-const c-non-after-{}-operators)))

(c-lang-defconst c-non-after-{}-ops-re
  ;; A regexp matching operators which can't appear after a block {..}
  ;; construct.
  t (regexp-opt (c-lang-const c-non-after-{}-operators)))
(c-lang-defvar c-non-after-{}-ops-re (c-lang-const c-non-after-{}-ops-re))

(c-lang-defconst c-overloadable-operators
  "List of the operators that are overloadable, in their \"identifier
form\".  See also `c-op-identifier-prefix'."
  t    nil
  c++  '("new" "delete" ;; Can be followed by "[]" but we ignore that.
	 "+" "-" "*" "/" "%"
	 "^" "??'" "xor" "&" "bitand" "|" "??!" "bitor" "~" "??-" "compl"
	 "!" "=" "<" ">" "+=" "-=" "*=" "/=" "%=" "^="
	 "??'=" "xor_eq" "&=" "and_eq" "|=" "??!=" "or_eq"
	 "<<" ">>" ">>=" "<<=" "==" "!=" "not_eq" "<=" ">="
	 "&&" "and" "||" "??!??!" "or" "++" "--" "," "->*" "->"
	 "()" "[]" "<::>" "??(??)")
  ;; These work like identifiers in Pike.
  pike '("`+" "`-" "`&" "`|" "`^" "`<<" "`>>" "`*" "`/" "`%" "`~"
	 "`==" "`<" "`>" "`!" "`[]" "`[]=" "`->" "`->=" "`()" "``+"
	 "``-" "``&" "``|" "``^" "``<<" "``>>" "``*" "``/" "``%"
	 "`+="))

(c-lang-defconst c-overloadable-operators-regexp
  ;; Regexp tested after an "operator" token in C++.
  t   nil
  c++ (c-make-keywords-re nil (c-lang-const c-overloadable-operators)))
(c-lang-defvar c-overloadable-operators-regexp
  (c-lang-const c-overloadable-operators-regexp))

(c-lang-defconst c-opt-op-identifier-prefix
  "Regexp matching the token before the ones in
`c-overloadable-operators' when operators are specified in their
\"identifier form\".  This typically matches \"operator\" in C++ where
operator functions are specified as e.g. \"operator +\".  It's nil in
languages without operator functions or where the complete operator
identifier is listed in `c-overloadable-operators'.

This regexp is assumed to not match any non-operator identifier."
  t   nil
  c++ (c-make-keywords-re t '("operator")))
(c-lang-defvar c-opt-op-identifier-prefix
  (c-lang-const c-opt-op-identifier-prefix))

(c-lang-defconst c-ambiguous-overloadable-or-identifier-prefixes
  ;; A list of strings which can be either overloadable operators or
  ;; identifier prefixes.
  t (c--intersection
     (c-filter-ops (c-lang-const c-identifier-ops)
			     '(prefix)
			     t)
     (c-lang-const c-overloadable-operators)
     :test 'string-equal))

(c-lang-defconst c-ambiguous-overloadable-or-identifier-prefix-re
  ;; A regexp matching strings which can be either overloadable operators
  ;; or identifier prefixes.
  t (c-make-keywords-re
	t (c-lang-const c-ambiguous-overloadable-or-identifier-prefixes)))
(c-lang-defvar c-ambiguous-overloadable-or-identifier-prefix-re
  (c-lang-const c-ambiguous-overloadable-or-identifier-prefix-re))

(c-lang-defconst c-other-op-syntax-tokens
  "List of the tokens made up of characters in the punctuation or
parenthesis syntax classes that have uses other than as expression
operators."
  t '("{" "}" "(" ")" "[" "]" ";" ":" "," "=" "/*" "*/" "//")
  (c c++ pike) (append '("#" "##"	; Used by cpp.
			 "::" "...")
		       (c-lang-const c-other-op-syntax-tokens))
  (c c++) (append '("*") (c-lang-const c-other-op-syntax-tokens))
  c++  (append '("&" "<%" "%>" "<:" ":>" "%:" "%:%:")
	       (c-lang-const c-other-op-syntax-tokens))
  objc (append '("#" "##"		; Used by cpp.
		 "+" "-")
               (c-lang-const c-other-op-syntax-tokens))
  idl  (append '("#" "##")		; Used by cpp.
	       (c-lang-const c-other-op-syntax-tokens))
  pike (append '("..")
	       (c-lang-const c-other-op-syntax-tokens)
	       (c-lang-const c-overloadable-operators))
  awk '("{" "}" "(" ")" "[" "]" ";" "," "=" "/"))

(c-lang-defconst c-all-op-syntax-tokens
  ;; List of all tokens in the punctuation and parenthesis syntax
  ;; classes.
  t (c--delete-duplicates (append (c-lang-const c-other-op-syntax-tokens)
				  (c-lang-const c-operator-list))
			  :test 'string-equal))

(c-lang-defconst c-nonsymbol-token-char-list
  ;; List containing all chars not in the word, symbol or
  ;; syntactically irrelevant syntax classes, i.e. all punctuation,
  ;; parenthesis and string delimiter chars.
  t (c-with-syntax-table (c-lang-const c-mode-syntax-table)
      ;; Only go through the chars in the printable ASCII range.  No
      ;; language so far has 8-bit or widestring operators.
      (let (list (char 32))
	(while (< char 127)
	  (or (memq (char-syntax char) '(?w ?_ ?< ?> ?\ ))
	      (setq list (cons (c-int-to-char char) list)))
	  (setq char (1+ char)))
	list)))

(c-lang-defconst c-nonsymbol-token-regexp
  ;; Regexp matching all tokens in the punctuation and parenthesis
  ;; syntax classes.  Note that this also matches ".", which can start
  ;; a float.
  t (c-make-keywords-re nil
      (c-filter-ops (c-lang-const c-all-op-syntax-tokens)
		    t
		    "\\`\\(\\s.\\)+\\'")))
(c-lang-defvar c-nonsymbol-token-regexp
  (c-lang-const c-nonsymbol-token-regexp))

(c-lang-defconst c-assignment-op-regexp
  ;; Regexp matching all assignment operators and only them.  The
  ;; beginning of the first submatch is used to detect the end of the
  ;; token, along with the end of the whole match.
  t (if (c-lang-const c-assignment-operators)
	(concat
	 ;; Need special case for "=" since it's a prefix of "==".
	 "=\\([^=]\\|$\\)"
	 "\\|"
	 (c-make-keywords-re nil
	   (c--set-difference (c-lang-const c-assignment-operators)
			      '("=")
			      :test 'string-equal)))
      regexp-unmatchable))
(c-lang-defvar c-assignment-op-regexp
  (c-lang-const c-assignment-op-regexp))

(c-lang-defconst c-arithmetic-operators
  "List of all arithmetic operators, including \"+=\", etc."
  ;; Note: in the following, there are too many operators for AWK and IDL.
  t (append (c-lang-const c-assignment-operators)
	    '("+" "-" "*" "/" "%"
	      "<<" ">>"
	      "<" ">" "<=" ">="
	      "==" "!="
	      "&" "^" "|"
	      "&&" "||")))

(c-lang-defconst c-arithmetic-op-regexp
  t (c-make-keywords-re nil
      (c-lang-const c-arithmetic-operators)))
(c-lang-defvar c-arithmetic-op-regexp (c-lang-const c-arithmetic-op-regexp))

(c-lang-defconst c-:$-multichar-token-regexp
  ;; Regexp matching all tokens ending in ":" which are longer than one char.
  ;; Currently (2016-01-07) only used in C++ Mode.
  t (c-make-keywords-re nil
      (c-filter-ops (c-lang-const c-operators) t ".+:$")))
(c-lang-defvar c-:$-multichar-token-regexp
  (c-lang-const c-:$-multichar-token-regexp))

(c-lang-defconst c-<>-multichar-token-regexp
  ;; Regexp matching all tokens containing "<" or ">" which are longer
  ;; than one char.
  t (c-make-keywords-re nil
      (c-filter-ops (c-lang-const c-all-op-syntax-tokens)
		    t
		    ".[<>]\\|[<>].")))
(c-lang-defvar c-<>-multichar-token-regexp
  (c-lang-const c-<>-multichar-token-regexp))

(c-lang-defconst c-<-op-cont-regexp
  ;; Regexp matching the second and subsequent characters of all
  ;; multicharacter tokens that begin with "<".
  t (c-make-keywords-re nil
      (c-filter-ops (c-lang-const c-all-op-syntax-tokens)
		    t
		    "\\`<."
		    (lambda (op) (substring op 1)))))
(c-lang-defvar c-<-op-cont-regexp (c-lang-const c-<-op-cont-regexp))

(c-lang-defconst c-<-pseudo-digraph-cont-regexp
  "Regexp matching the continuation of a pseudo digraph starting \"<\".
This is used only in C++ Mode, where \"<::\" is handled as a
template opener followed by the \"::\" operator - usually."
  t regexp-unmatchable
  c++ "::\\([^:>]\\|$\\)")
(c-lang-defvar c-<-pseudo-digraph-cont-regexp
	       (c-lang-const c-<-pseudo-digraph-cont-regexp))

(c-lang-defconst c-<-pseudo-digraph-cont-len
  "The maximum length of the main bit of a `c-<-pseudo-digraph-cont-regexp' match.
This doesn't count the merely contextual bits of the regexp match."
  t 0
  c++ 2)
(c-lang-defvar c-<-pseudo-digraph-cont-len
	       (c-lang-const c-<-pseudo-digraph-cont-len))

(c-lang-defconst c->-op-cont-tokens
  ;; A list of second and subsequent characters of all multicharacter tokens
  ;; that begin with ">".
  t (c-filter-ops (c-lang-const c-all-op-syntax-tokens)
		  t
		  "\\`>."
		  (lambda (op) (substring op 1)))
  java (c-filter-ops (c-lang-const c-all-op-syntax-tokens)
		     t
		     "\\`>[^>]\\|\\`>>[^>]"
		     (lambda (op) (substring op 1))))

(c-lang-defconst c->-op-cont-regexp
  ;; Regexp matching the second and subsequent characters of all
  ;; multicharacter tokens that begin with ">".
  t (c-make-keywords-re nil (c-lang-const c->-op-cont-tokens)))
(c-lang-defvar c->-op-cont-regexp (c-lang-const c->-op-cont-regexp))

(c-lang-defconst c->-op-without->-cont-regexp
  ;; Regexp matching the second and subsequent characters of all
  ;; multicharacter tokens that begin with ">" except for those beginning with
  ;; ">>".
  t (c-make-keywords-re nil
      (c--set-difference
       (c-lang-const c->-op-cont-tokens)
       (c-filter-ops (c-lang-const c-all-op-syntax-tokens)
		     t
		     "\\`>>"
		     (lambda (op) (substring op 1)))
       :test 'string-equal)))
(c-lang-defvar c->-op-without->-cont-regexp
  (c-lang-const c->-op-without->-cont-regexp))

(c-lang-defconst c-multichar->-op-not->>->>>-regexp
  ;; Regexp matching multichar tokens containing ">", except ">>" and ">>>"
  t (c-make-keywords-re nil
      (c--set-difference
       (c-filter-ops (c-lang-const c-all-op-syntax-tokens)
		     t
		     "\\(.>\\|>.\\)")
       '(">>" ">>>")
       :test 'string-equal)))
(c-lang-defvar c-multichar->-op-not->>->>>-regexp
  (c-lang-const c-multichar->-op-not->>->>>-regexp))

(c-lang-defconst c-:-op-cont-tokens
  ;; A list of second and subsequent characters of all multicharacter tokens
  ;; that begin with ":".
  t (c-filter-ops (c-lang-const c-all-op-syntax-tokens)
		  t
		  "\\`:."
		  (lambda (op) (substring op 1))))

(c-lang-defconst c-:-op-cont-regexp
  ;; Regexp matching the second and subsequent characters of all
  ;; multicharacter tokens that begin with ":".
  t (c-make-keywords-re nil (c-lang-const c-:-op-cont-tokens)))
(c-lang-defvar c-:-op-cont-regexp
  (c-lang-const c-:-op-cont-regexp))

(c-lang-defconst c-stmt-delim-chars
  ;; The characters that should be considered to bound statements.  To
  ;; optimize `c-crosses-statement-barrier-p' somewhat, it's assumed to
  ;; begin with "^" to negate the set.  If ? : operators should be
  ;; detected then the string must end with "?:".
  t "^;{}?:")
(c-lang-defvar c-stmt-delim-chars (c-lang-const c-stmt-delim-chars))

(c-lang-defconst c-stmt-boundary-skip-chars
  ;; Like `c-stmt-delim-chars', but augmented by "#" for languages with CPP
  ;; constructs, and for C++ Mode, also by "[", to help deal with C++
  ;; attributes.
  t (if (c-lang-const c-opt-cpp-symbol)
	(concat (substring (c-lang-const c-stmt-delim-chars) 0 1) ; "^"
		(c-lang-const c-opt-cpp-symbol) ; usually #
		(substring (c-lang-const c-stmt-delim-chars) 1)) ; ";{}?:"
      (c-lang-const c-stmt-delim-chars))
  c++ (concat (substring (c-lang-const c-stmt-boundary-skip-chars) 0 1) ; "^"
	      "["
	      (substring (c-lang-const c-stmt-boundary-skip-chars) 1))) ; ";{}?:"
(c-lang-defvar c-stmt-boundary-skip-chars
  (c-lang-const c-stmt-boundary-skip-chars))

(c-lang-defconst c-stmt-boundary-skip-list
  ;; The characters (apart from the initial ^) in `c-stmt-boundary-skip-chars'
  ;; as a list of characters.
  t (append (substring (c-lang-const c-stmt-boundary-skip-chars) 1) nil))
(c-lang-defvar c-stmt-boundary-skip-list
  (c-lang-const c-stmt-boundary-skip-list))

(c-lang-defconst c-stmt-delim-chars-with-comma
  ;; Variant of `c-stmt-delim-chars' that additionally contains ','.
  t    "^;,{}?:")
(c-lang-defvar c-stmt-delim-chars-with-comma
  (c-lang-const c-stmt-delim-chars-with-comma))

(c-lang-defconst c-stmt-boundary-skip-chars-with-comma
  ;; Variant of `c-stmt-boundary-skip-chars' also containing ','.
  t (if (c-lang-const c-opt-cpp-symbol)
	(concat (substring (c-lang-const c-stmt-delim-chars-with-comma) 0 1)
		(c-lang-const c-opt-cpp-symbol) ; usually #
		(substring (c-lang-const c-stmt-delim-chars-with-comma) 1))
      (c-lang-const c-stmt-delim-chars-with-comma))
  c++ (concat
       (substring (c-lang-const c-stmt-boundary-skip-chars-with-comma) 0 1) ; "^"
       "["
       (substring (c-lang-const c-stmt-boundary-skip-chars-with-comma) 1))) ; ";,{}?:"
(c-lang-defvar c-stmt-boundary-skip-chars-with-comma
  (c-lang-const c-stmt-boundary-skip-chars-with-comma))

(c-lang-defconst c-stmt-boundary-skip-list-with-comma
  ;; Variant of `c-stmt-boundary-skip-list' also including a comma.
  t (append (substring (c-lang-const c-stmt-boundary-skip-chars-with-comma)
		       1)
	    nil))
(c-lang-defvar c-stmt-boundary-skip-list-with-comma
  (c-lang-const c-stmt-boundary-skip-list-with-comma))

(c-lang-defconst c-pack-ops
  "Ops which signal C++11's \"parameter pack\""
  t nil
  c++ '("..."))
(c-lang-defconst c-pack-key
  t (c-make-keywords-re 'appendable (c-lang-const c-pack-ops)))
(c-lang-defvar c-pack-key (c-lang-const c-pack-key))

(c-lang-defconst c-auto-ops
  ;; Ops which signal C++11's new auto uses.
  t nil
  c++ '("=" "->"))
(c-lang-defconst c-auto-ops-re
  t (c-make-keywords-re nil (c-lang-const c-auto-ops)))
(c-lang-defvar c-auto-ops-re (c-lang-const c-auto-ops-re))

(c-lang-defconst c-haskell-op
  ;; Op used in the new C++11 auto function definition, indicating type.
  t nil
  c++ '("->"))
(c-lang-defconst c-haskell-op-re
  t (c-make-keywords-re nil (c-lang-const c-haskell-op)))
(c-lang-defvar c-haskell-op-re (c-lang-const c-haskell-op-re))

(c-lang-defconst c-pre-start-tokens
  "List of operators following which an apparent declaration \(e.g.
\"t1 *fn (t2 *b);\") is most likely to be an actual declaration
\(as opposed to an arithmetic expression)."
  t '(";" "{" "}"))
(c-lang-defvar c-pre-start-tokens (c-lang-const c-pre-start-tokens))

(c-lang-defconst c-pre-lambda-tokens
  "List of tokens which may precede a lambda declaration.
In C++ this is something like \"[a,b] (foo, bar) -> int { ... };\".
Currently (2016-08) only used in C++ mode."
  t (c--set-difference
     (c--delete-duplicates
      (append (c-lang-const c-operator-list)
	      (c-lang-const c-other-op-syntax-tokens)))
     (append
      '("#" "%:" "??=" "##" "%:%:" "??=??=" "::" "." "->"
	"]" "<:" ":>" "??(" "??)" "??-" "new" "delete"
	")" ".*" "->*" "??'" "??!" "??!??!" "??!=" "??'=")
      '("<%" "%>" "<:" ":>" "%:" "%:%:" "#" "##" "::" "..."))
     :test #'string-equal))

(c-lang-defconst c-pre-lambda-tokens-re
  ;; Regexp matching any token in the list `c-pre-lambda-tokens'.
  t (c-make-keywords-re t (c-lang-const c-pre-lambda-tokens)))
(c-lang-defvar c-pre-lambda-tokens-re (c-lang-const c-pre-lambda-tokens-re))
\f
;;; Syntactic whitespace.

(c-lang-defconst c-simple-ws
  "Regexp matching an ordinary whitespace character.
Does not contain a \\| operator at the top level."
  ;; "\\s " is not enough since it doesn't match line breaks.
  t "\\(\\s \\|[\n\r]\\)")

(c-lang-defconst c-simple-ws-depth
  ;; Number of regexp grouping parens in `c-simple-ws'.
  t (regexp-opt-depth (c-lang-const c-simple-ws)))

(c-lang-defconst c-line-comment-starter
  "String that starts line comments, or nil if such don't exist.
Line comments are always terminated by newlines.  At least one of
`c-block-comment-starter' and this one is assumed to be set.

Note that it's currently not enough to set this to support a new
comment style.  Other stuff like the syntax table must also be set up
properly."
  t    "//"
  awk  "#")
(c-lang-defvar c-line-comment-starter (c-lang-const c-line-comment-starter))

(c-lang-defconst c-block-comment-starter
  "String that starts block comments, or nil if such don't exist.
Block comments are ended by `c-block-comment-ender', which is assumed
to be set if this is.  At least one of `c-line-comment-starter' and
this one is assumed to be set.

Note that it's currently not enough to set this to support a new
comment style.  Other stuff like the syntax table must also be set up
properly."
  t    "/*"
  awk  nil)
(c-lang-defvar c-block-comment-starter (c-lang-const c-block-comment-starter))

(c-lang-defconst c-block-comment-ender
  "String that ends block comments, or nil if such don't exist.

Note that it's currently not enough to set this to support a new
comment style.  Other stuff like the syntax table must also be set up
properly."
  t    "*/"
  awk  nil)
(c-lang-defvar c-block-comment-ender (c-lang-const c-block-comment-ender))

(c-lang-defconst c-block-comment-ender-regexp
  ;; Regexp which matches the end of a block comment (if such exists in the
  ;; language)
  t (if (c-lang-const c-block-comment-ender)
	(regexp-quote (c-lang-const c-block-comment-ender))
      regexp-unmatchable))
(c-lang-defvar c-block-comment-ender-regexp
	       (c-lang-const c-block-comment-ender-regexp))

(c-lang-defconst c-block-comment-awkward-chars
  "List of characters which, inside a block comment, could be the first
character of a double character construct.  This doesn't include
backslash."
  t (when (> (length (c-lang-const c-block-comment-ender)) 1)
      (list (aref (c-lang-const c-block-comment-ender) 0))))
(c-lang-defvar c-block-comment-awkward-chars
	       (c-lang-const c-block-comment-awkward-chars))

(c-lang-defconst c-font-lock-comment-end-skip
  ;; Regexp which matches whitespace followed by the end of a block comment
  ;; (if such exists in the language).  This is used by font lock to determine
  ;; the portion of the end of a comment to fontify with
  ;; `font-lock-comment-delimiter-face'.
  t (if (c-lang-const c-block-comment-ender)
	(concat "[ \t]*" (c-lang-const c-block-comment-ender-regexp))
      regexp-unmatchable))
(c-lang-setvar font-lock-comment-end-skip
	       (c-lang-const c-font-lock-comment-end-skip))

(c-lang-defconst c-comment-start-regexp
  ;; Regexp to match the start of any type of comment.
  t (let ((re (c-make-keywords-re nil
		(list (c-lang-const c-line-comment-starter)
		      (c-lang-const c-block-comment-starter)))))
      (if (memq 'gen-comment-delim c-emacs-features)
	  (concat re "\\|\\s!")
	re)))
(c-lang-defvar c-comment-start-regexp (c-lang-const c-comment-start-regexp))

(c-lang-defconst c-block-comment-start-regexp
  ;; Regexp which matches the start of a block comment (if such exists in the
  ;; language)
  t (if (c-lang-const c-block-comment-starter)
	(regexp-quote (c-lang-const c-block-comment-starter))
      regexp-unmatchable))
(c-lang-defvar c-block-comment-start-regexp
  (c-lang-const c-block-comment-start-regexp))

(c-lang-defconst c-line-comment-start-regexp
  ;; Regexp which matches the start of a line comment (if such exists in the
  ;; language; it does in all 7 CC Mode languages).
  t (if (c-lang-const c-line-comment-starter)
	(regexp-quote (c-lang-const c-line-comment-starter))
      regexp-unmatchable))
(c-lang-defvar c-line-comment-start-regexp
	       (c-lang-const c-line-comment-start-regexp))

(c-lang-defconst c-last-c-comment-end-on-line-re
  "Regexp which matches the last block comment ender on the
current line, if any, or nil in those languages without block
comments.  When a match is found, submatch 1 contains the comment
ender."
  t "\\(\\*/\\)\\([^*]\\|\\*+\\([^*/]\\|$\\)\\)*$"
  awk nil)
(c-lang-defvar c-last-c-comment-end-on-line-re
	       (c-lang-const c-last-c-comment-end-on-line-re))

;; The following is no longer used (2020-02-16).
;; (c-lang-defconst c-last-open-c-comment-start-on-line-re
;;   "Regexp which matches the last block comment start on the
;; current ine, if any, or nil in those languages without block
;; comments.  When a match is found, submatch 1 contains the comment
;; starter."
;;   t "\\(/\\*\\)\\([^*]\\|\\*+\\([^*/]\\|$\\)\\)*$"
;;   awk nil)
;; (c-lang-defvar c-last-open-c-comment-start-on-line-re
;;   (c-lang-const c-last-open-c-comment-start-on-line-re))

(c-lang-defconst c-literal-start-regexp
  ;; Regexp to match the start of comments and string literals.
  t (concat (c-lang-const c-comment-start-regexp)
	    "\\|"
	    (if (memq 'gen-string-delim c-emacs-features)
		"\"\\|\\s|"
	      "\"")))
(c-lang-defvar c-literal-start-regexp (c-lang-const c-literal-start-regexp))

(c-lang-defconst c-doc-comment-start-regexp
  "Regexp to match the start of documentation comments."
  t    regexp-unmatchable
  ;; From font-lock.el: `doxygen' uses /*! while others use /**.
  (c c++ objc) "/\\*[*!]"
  java "/\\*\\*"
  pike "/[/*]!")
(c-lang-defvar c-doc-comment-start-regexp
  (c-lang-const c-doc-comment-start-regexp))

(c-lang-defconst c-block-comment-is-default
  "Non-nil when the default comment style is block comment."
  ;; Note to maintainers of derived modes: You are responsible for ensuring
  ;; the pertinent `c-block-comment-{starter,ender}' or
  ;; `c-line-comment-{starter,ender}' are non-nil.
  t nil
  c t)
(c-lang-defvar c-block-comment-is-default
  (c-lang-const c-block-comment-is-default))

(c-lang-defconst comment-start
  "String that starts comments inserted with M-; etc.
`comment-start' is initialized from this."
  t (concat
     (if (c-lang-const c-block-comment-is-default)
	 (c-lang-const c-block-comment-starter)
       (c-lang-const c-line-comment-starter))
     " "))
(c-lang-setvar comment-start (c-lang-const comment-start))

(c-lang-defconst comment-end
  "String that ends comments inserted with M-; etc.
`comment-end' is initialized from this."
  t (if (c-lang-const c-block-comment-is-default)
	(concat " " (c-lang-const c-block-comment-ender))
      ""))
(c-lang-setvar comment-end (c-lang-const comment-end))

(c-lang-defconst comment-start-skip
  "Regexp to match the start of a comment plus everything up to its body.
`comment-start-skip' is initialized from this."
  ;; Default: Allow the last char of the comment starter(s) to be
  ;; repeated, then allow any amount of horizontal whitespace.
  t (concat "\\(?:"
	    (c-concat-separated
	     (mapcar (lambda (cs)
		       (when cs
			 (concat (regexp-quote cs) "+")))
		     (list (c-lang-const c-line-comment-starter)
			   (c-lang-const c-block-comment-starter)))
	     "\\|")
	    "\\)\\s *"))
(c-lang-setvar comment-start-skip (c-lang-const comment-start-skip))

(c-lang-defconst comment-end-can-be-escaped
  "When non-nil, escaped EOLs inside comments are valid.
This works in Emacs >= 25.1."
  t nil
  (c c++ objc) t)
(c-lang-setvar comment-end-can-be-escaped
	       (c-lang-const comment-end-can-be-escaped))

(c-lang-defconst c-syntactic-ws-start
  ;; Regexp matching any sequence that can start syntactic whitespace.
  ;; The only uncertain case is '#' when there are cpp directives.
  t (concat "\\s \\|"
	    (c-make-keywords-re nil
	      (append (list (c-lang-const c-line-comment-starter)
			    (c-lang-const c-block-comment-starter)
			    (when (c-lang-const c-opt-cpp-prefix)
			      "#"))
		      '("\n" "\r")))
	    "\\|\\\\[\n\r]"
	    (when (memq 'gen-comment-delim c-emacs-features)
	      "\\|\\s!")))
(c-lang-defvar c-syntactic-ws-start (c-lang-const c-syntactic-ws-start))

(c-lang-defconst c-syntactic-ws-end
  ;; Regexp matching any single character that might end syntactic whitespace.
  t (concat "\\s \\|"
	    (c-make-keywords-re nil
	      (append (when (c-lang-const c-block-comment-ender)
			(list
			 (string
			  (elt (c-lang-const c-block-comment-ender)
			       (1- (length
				    (c-lang-const c-block-comment-ender)))))))
		      '("\n" "\r")))
	    (when (memq 'gen-comment-delim c-emacs-features)
	      "\\|\\s!")))
(c-lang-defvar c-syntactic-ws-end (c-lang-const c-syntactic-ws-end))

(c-lang-defconst c-unterminated-block-comment-regexp
  ;; Regexp matching an unterminated block comment that doesn't
  ;; contain line breaks, or nil in languages without block comments.
  ;; Does not contain a \| operator at the top level.
  t (when (c-lang-const c-block-comment-starter)
      (concat
       (regexp-quote (c-lang-const c-block-comment-starter))
       ;; It's messy to cook together a regexp that matches anything
       ;; but c-block-comment-ender.
       (let ((end (c-lang-const c-block-comment-ender)))
	 (cond ((= (length end) 1)
		(concat "[^" end "\n\r]*"))
	       ((= (length end) 2)
		(concat "[^" (substring end 0 1) "\n\r]*"
			"\\("
			(regexp-quote (substring end 0 1)) "+"
			"[^"
			;; The quoting rules inside char classes are silly. :P
			(cond ((= (elt end 0) (elt end 1))
			       (concat (substring end 0 1) "\n\r"))
			      ((= (elt end 1) ?\])
			       (concat (substring end 1 2) "\n\r"
				       (substring end 0 1)))
			      (t
			       (concat (substring end 0 1) "\n\r"
				       (substring end 1 2))))
			"]"
			"[^" (substring end 0 1) "\n\r]*"
			"\\)*"))
	       (t
		(error "Can't handle a block comment ender of length %s"
		       (length end))))))))

(c-lang-defconst c-block-comment-regexp
  ;; Regexp matching a block comment that doesn't contain line breaks,
  ;; or nil in languages without block comments.  The reason we don't
  ;; allow line breaks is to avoid going very far and risk running out
  ;; of regexp stack; this regexp is intended to handle only short
  ;; comments that might be put in the middle of limited constructs
  ;; like declarations.  Does not contain a \| operator at the top
  ;; level.
  t (when (c-lang-const c-unterminated-block-comment-regexp)
      (concat
       (c-lang-const c-unterminated-block-comment-regexp)
       (let ((end (c-lang-const c-block-comment-ender)))
	 (cond ((= (length end) 1)
		(regexp-quote end))
	       ((= (length end) 2)
		(concat (regexp-quote (substring end 0 1)) "+"
			(regexp-quote (substring end 1 2))))
	       (t
		(error "Can't handle a block comment ender of length %s"
		       (length end))))))))

(c-lang-defconst c-nonwhite-syntactic-ws
  ;; Regexp matching a piece of syntactic whitespace that isn't a
  ;; sequence of simple whitespace characters.  As opposed to
  ;; `c-(forward|backward)-syntactic-ws', this doesn't regard cpp
  ;; directives as syntactic whitespace.
  t (c-concat-separated
     (list (when (c-lang-const c-line-comment-starter)
	     (concat (regexp-quote (c-lang-const c-line-comment-starter))
		     "[^\n\r]*[\n\r]"))
	   (c-lang-const c-block-comment-regexp)
	   "\\\\[\n\r]"
	   (when (memq 'gen-comment-delim c-emacs-features)
	     "\\s!\\S!*\\s!"))
     "\\|"))

(c-lang-defconst c-syntactic-ws
  ;; Regexp matching syntactic whitespace, including possibly the
  ;; empty string.  As opposed to `c-(forward|backward)-syntactic-ws',
  ;; this doesn't regard cpp directives as syntactic whitespace.  Does
  ;; not contain a \| operator at the top level.
  t (concat (c-lang-const c-simple-ws) "*"
	    "\\("
	    (concat "\\(" (c-lang-const c-nonwhite-syntactic-ws) "\\)"
		    (c-lang-const c-simple-ws) "*")
	    "\\)*"))

(c-lang-defconst c-syntactic-ws-depth
  ;; Number of regexp grouping parens in `c-syntactic-ws'.
  t (regexp-opt-depth (c-lang-const c-syntactic-ws)))

(c-lang-defconst c-nonempty-syntactic-ws
  ;; Regexp matching syntactic whitespace, which is at least one
  ;; character long.  As opposed to `c-(forward|backward)-syntactic-ws',
  ;; this doesn't regard cpp directives as syntactic whitespace.  Does
  ;; not contain a \| operator at the top level.
  t (concat "\\("
	    (c-lang-const c-simple-ws)
	    "\\|"
	    (c-lang-const c-nonwhite-syntactic-ws)
	    "\\)+"))

(c-lang-defconst c-nonempty-syntactic-ws-depth
  ;; Number of regexp grouping parens in `c-nonempty-syntactic-ws'.
  t (regexp-opt-depth (c-lang-const c-nonempty-syntactic-ws)))

(c-lang-defconst c-single-line-syntactic-ws
  ;; Regexp matching syntactic whitespace without any line breaks.  As
  ;; opposed to `c-(forward|backward)-syntactic-ws', this doesn't
  ;; regard cpp directives as syntactic whitespace.  Does not contain
  ;; a \| operator at the top level.
  t (if (c-lang-const c-block-comment-regexp)
	(concat "\\s *\\("
		(c-lang-const c-block-comment-regexp)
		"\\s *\\)*")
      "\\s *"))

(c-lang-defconst c-single-line-syntactic-ws-depth
  ;; Number of regexp grouping parens in `c-single-line-syntactic-ws'.
  t (regexp-opt-depth (c-lang-const c-single-line-syntactic-ws)))

(c-lang-defconst c-syntactic-eol
  ;; Regexp that matches when there is no syntactically significant
  ;; text before eol.  Macros are regarded as syntactically
  ;; significant text here.
  t (concat (c-lang-const c-single-line-syntactic-ws)
	    ;; Match eol (possibly inside a block comment or preceded
	    ;; by a line continuation backslash), or the beginning of a
	    ;; line comment.  Note: This has to be modified for awk
	    ;; where line comments start with '#'.
	    "\\("
	    (c-concat-separated
	     (list (when (c-lang-const c-line-comment-starter)
		     (regexp-quote (c-lang-const c-line-comment-starter)))
		   (when (c-lang-const c-unterminated-block-comment-regexp)
		     (concat (c-lang-const c-unterminated-block-comment-regexp)
			     "$"))
		   "\\\\$"
		   "$")
	     "\\|")
	    "\\)"))
(c-lang-defvar c-syntactic-eol (c-lang-const c-syntactic-eol))

\f
;;; Defun handling.

;; The Emacs variables beginning-of-defun-function and end-of-defun-function
;; will be set so that commands like `mark-defun' and `narrow-to-defun' work
;; right.  In older Emacsen, the key sequences C-M-a and C-M-e are, however,
;; bound directly to the CC Mode functions, allowing optimization for large n.
;; From Emacs 23, this isn't necessary any more, since n is passed to the two
;; functions.
(c-lang-defconst beginning-of-defun-function
  "Function to which beginning-of-defun-function will be set."
  t 'c-beginning-of-defun
  awk 'c-awk-beginning-of-defun)
(c-lang-setvar beginning-of-defun-function
	       (c-lang-const beginning-of-defun-function))

(c-lang-defconst end-of-defun-function
  "Function to which end-of-defun-function will be set."
  t 'c-end-of-defun
  awk 'c-awk-end-of-defun)
(c-lang-setvar end-of-defun-function (c-lang-const end-of-defun-function))
\f
;;; In-comment text handling.

(c-lang-defconst c-paragraph-start
  "Regexp to append to `paragraph-start'."
  t    "$"
  java "\\(@[a-zA-Z]+\\>\\|$\\)"	; For Javadoc.
  pike "\\(@[a-zA-Z_-]+\\>\\([^{]\\|$\\)\\|$\\)") ; For Pike refdoc.
(c-lang-defvar c-paragraph-start (c-lang-const c-paragraph-start))

(c-lang-defconst c-paragraph-separate
  "Regexp to append to `paragraph-separate'."
  t    "$"
  pike (c-lang-const c-paragraph-start))
(c-lang-defvar c-paragraph-separate (c-lang-const c-paragraph-separate))

\f
;;; Keyword lists.

;; Note: All and only all language constants containing keyword lists
;; should end with "-kwds"; they're automatically collected into the
;; `c-kwds-lang-consts' list below and used to build `c-keywords' etc.

(c-lang-defconst c-primitive-type-kwds
  "Primitive type keywords.  As opposed to the other keyword lists, the
keywords listed here are fontified with the type face instead of the
keyword face.

If any of these also are on `c-type-list-kwds', `c-ref-list-kwds',
`c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds',
`c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses
will be handled.

Do not try to modify this list for end user customizations; the
`*-font-lock-extra-types' variable, where `*' is the mode prefix, is
the appropriate place for that."
  t    '("char" "double" "float" "int" "long" "short" "signed"
	 "unsigned" "void")
  c    (append
	'("_Bool" "_Complex" "_Imaginary") ; Conditionally defined in C99.
	(c-lang-const c-primitive-type-kwds))
  c++  (append
	'("bool" "wchar_t" "char16_t" "char32_t")
	(c-lang-const c-primitive-type-kwds))
  ;; Objective-C extends C, but probably not the new stuff in C99.
  objc (append
	'("id" "Class" "SEL" "IMP" "BOOL")
	(c-lang-const c-primitive-type-kwds))
  java '("boolean" "byte" "char" "double" "float" "int" "long" "short" "void")
  idl  '("Object" "ValueBase" "any" "boolean" "char" "double" "fixed" "float"
	 "long" "octet" "sequence" "short" "string" "void" "wchar" "wstring"
	 ;; In CORBA PSDL:
	 "ref"
	 ;; The following can't really end a type, but we have to specify them
	 ;; here due to the assumption in `c-primitive-type-prefix-kwds'.  It
	 ;; doesn't matter that much.
	 "unsigned" "strong")
  pike '(;; this_program isn't really a keyword, but it's practically
	 ;; used as a builtin type.
	 "array" "float" "function" "int" "mapping" "mixed" "multiset"
	 "object" "program" "string" "this_program" "void"))

(c-lang-defconst c-return-kwds
  "Keywords which return a value to the calling function."
  t '("return")
  c++ '("return" "co_return")
  idl nil)

(c-lang-defconst c-return-key
  ;; Adorned regexp matching `c-return-kwds'.
  t (c-make-keywords-re t (c-lang-const c-return-kwds)))
(c-lang-defvar c-return-key (c-lang-const c-return-key))

(c-lang-defconst c-primitive-type-key
  ;; An adorned regexp that matches `c-primitive-type-kwds'.
  t (c-make-keywords-re t (c-lang-const c-primitive-type-kwds)))
(c-lang-defvar c-primitive-type-key (c-lang-const c-primitive-type-key))

(c-lang-defconst c-primitive-type-prefix-kwds
  "Keywords that might act as prefixes for primitive types.  Assumed to
be a subset of `c-primitive-type-kwds'."
  t       nil
  (c c++ objc) '("long" "short" "signed" "unsigned")
  idl	  '("long" "unsigned"
	    ;; In CORBA PSDL:
	    "strong"))
(c-lang-defconst c-typedef-kwds
  "Prefix keyword(s) like \"typedef\" which make a type declaration out
of a variable declaration."
  t        '("typedef")
  (awk idl java) nil)

(c-lang-defconst c-typedef-key
  ;; Adorned regexp matching `c-typedef-kwds'.
  t (c-make-keywords-re t (c-lang-const c-typedef-kwds)))
(c-lang-defvar c-typedef-key (c-lang-const c-typedef-key))

(c-lang-defconst c-typeof-kwds
  "Keywords followed by a parenthesized expression, which stands for
the type of that expression."
  t nil
  c '("typeof")				; longstanding GNU C(++) extension.
  c++ '("decltype" "typeof"))

(c-lang-defconst c-typeof-key
  ;; Adorned regexp matching `c-typeof-kwds'.
  t (c-make-keywords-re t (c-lang-const c-typeof-kwds)))
(c-lang-defvar c-typeof-key (c-lang-const c-typeof-key))

(c-lang-defconst c-template-typename-kwds
  "Keywords which, within a template declaration, can introduce a
declaration with a type as a default value.  This is used only in
C++ Mode, e.g. \"<typename X = Y>\"."
  t    nil
  c++  '("class" "typename"))

(c-lang-defconst c-template-typename-key
  t (c-make-keywords-re t (c-lang-const c-template-typename-kwds)))
(c-lang-defvar c-template-typename-key (c-lang-const c-template-typename-key))

(c-lang-defconst c-type-prefix-kwds
  "Keywords where the following name - if any - is a type name, and
where the keyword together with the symbol works as a type in
declarations.

Note that an alternative if the second part doesn't hold is
`c-type-list-kwds'.  Keywords on this list are typically also present
on one of the `*-decl-kwds' lists."
  t    nil
  c    '("struct" "union" "enum")
  c++  (append '("class" "typename")
	       (c-lang-const c-type-prefix-kwds c)))

(c-lang-defconst c-type-prefix-key
  ;; Adorned regexp matching `c-type-prefix-kwds'.
  t (c-make-keywords-re t (c-lang-const c-type-prefix-kwds)))
(c-lang-defvar c-type-prefix-key (c-lang-const c-type-prefix-key))

(c-lang-defconst c-type-modifier-prefix-kwds
  "Type modifier keywords which can appear in front of a type.  These can
also occur almost anywhere in types but they don't build a type of
themselves.  Unlike the keywords on `c-primitive-type-kwds', they are
fontified with the keyword face and not the type face."
  t    nil
  c    '("const" "restrict" "volatile")
  c++  '("const" "noexcept" "volatile")
  objc '("const" "volatile")
  t    (append (c-lang-const c-no-type-kwds)
	       (c-lang-const c-type-modifier-prefix-kwds)))

(c-lang-defconst c-opt-type-modifier-prefix-key
  ;; Adorned regexp matching `c-type-modifier-prefix-kwds', or nil in
  ;; languages without such keywords.
  t (and (c-lang-const c-type-modifier-prefix-kwds)
	 (c-make-keywords-re t (c-lang-const c-type-modifier-prefix-kwds))))
(c-lang-defvar c-opt-type-modifier-prefix-key
	       (c-lang-const c-opt-type-modifier-prefix-key))

(c-lang-defconst c-type-modifier-kwds
  "Type modifier keywords.  These can occur almost anywhere in types except
at the start, but they don't build a type of themselves.  Unlike the keywords
on `c-primitive-type-kwds', they are fontified with the keyword face and not
the type face."
  t (c-lang-const c-type-modifier-prefix-kwds)
  c++ (append (c-lang-const c-type-modifier-prefix-kwds) '("throw")))

(c-lang-defconst c-opt-type-modifier-key
  ;; Adorned regexp matching `c-type-modifier-kwds', or nil in
  ;; languages without such keywords.
  t (and (c-lang-const c-type-modifier-kwds)
	 (c-make-keywords-re t (c-lang-const c-type-modifier-kwds))))
(c-lang-defvar c-opt-type-modifier-key (c-lang-const c-opt-type-modifier-key))

(c-lang-defconst c-opt-type-component-key
  ;; An adorned regexp that matches `c-primitive-type-prefix-kwds' and
  ;; `c-type-modifier-kwds', or nil in languages without any of them.
  t (and (or (c-lang-const c-primitive-type-prefix-kwds)
	     (c-lang-const c-type-modifier-kwds))
	 (c-make-keywords-re t
	   (append (c-lang-const c-primitive-type-prefix-kwds)
		   (c-lang-const c-type-modifier-kwds)))))
(c-lang-defvar c-opt-type-component-key
  (c-lang-const c-opt-type-component-key))

(c-lang-defconst c-type-start-kwds
  ;; All keywords that can start a type (i.e. are either a type prefix
  ;; or a complete type).
  t (c--delete-duplicates (append (c-lang-const c-primitive-type-kwds)
				  (c-lang-const c-type-prefix-kwds)
				  (c-lang-const c-type-modifier-kwds))
			  :test 'string-equal))

(c-lang-defconst c-type-decl-suffix-ws-ids-kwds
  "\"Identifiers\" that when immediately following a declarator have semantic
effect in the declaration, but are syntactically like whitespace."
  t    nil
  c++  '("final" "override"))

(c-lang-defconst c-type-decl-suffix-ws-ids-key
  ;; An adorned regexp matching `c-type-decl-suffix-ws-ids-kwds'.
  t (c-make-keywords-re t (c-lang-const c-type-decl-suffix-ws-ids-kwds)))
(c-lang-defvar c-type-decl-suffix-ws-ids-key
  (c-lang-const c-type-decl-suffix-ws-ids-key))

(c-lang-defconst c-class-id-suffix-ws-ids-kwds
  "\"Identifiers\" that when immediately following the identifier
of a class declaration have semantic effect in the declaration,
but are syntactically like whitespace."
  t    nil
  c++ '("final"))

(c-lang-defconst c-class-id-suffix-ws-ids-key
  ;; An adorned regexp matching `c-class-id-suffix-ws-ids-kwds'.
  t (c-make-keywords-re t (c-lang-const c-class-id-suffix-ws-ids-kwds)))
(c-lang-defvar c-class-id-suffix-ws-ids-key
  (c-lang-const c-class-id-suffix-ws-ids-key))

(c-lang-defconst c-class-decl-kwds
  "Keywords introducing declarations where the following block (if any)
contains another declaration level that should be considered a class.

If any of these also are on `c-type-list-kwds', `c-ref-list-kwds',
`c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds',
`c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses
will be handled.

Note that presence on this list does not automatically treat the
following identifier as a type; the keyword must also be present on
`c-type-prefix-kwds' or `c-type-list-kwds' to accomplish that."
  t    nil
  c    '("struct" "union")
  c++  '("class" "struct" "union")
  objc '("struct" "union"
	 "@interface" "@implementation" "@protocol")
  java '("class" "@interface" "interface")
  idl  '("component" "eventtype" "exception" "home" "interface" "struct"
	 "union" "valuetype"
	 ;; In CORBA PSDL:
	 "storagehome" "storagetype"
	 ;; In CORBA CIDL:
	 "catalog" "executor" "manages" "segment")
  pike '("class"))

(c-lang-defconst c-class-key
  ;; Regexp matching the start of a class.
  t (c-make-keywords-re t (c-lang-const c-class-decl-kwds)))
(c-lang-defvar c-class-key (c-lang-const c-class-key))

(c-lang-defconst c-brace-list-decl-kwds
  "Keywords introducing declarations where the following block (if
any) is a brace list.

If any of these also are on `c-type-list-kwds', `c-ref-list-kwds',
`c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds',
`c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses
will be handled."
  t    '("enum")
  (awk) nil)

(c-lang-defconst c-brace-list-key
  ;; Regexp matching the start of declarations where the following
  ;; block is a brace list.
  t (c-make-keywords-re t (c-lang-const c-brace-list-decl-kwds)))
(c-lang-defvar c-brace-list-key (c-lang-const c-brace-list-key))

(c-lang-defconst c-after-brace-list-decl-kwds
  "Keywords that might follow keywords in `c-brace-list-decl-kwds'
and precede the opening brace."
  t    nil
  c++  '("class" "struct"))

(c-lang-defconst c-after-brace-list-key
  ;; Regexp matching keywords that can fall between a brace-list
  ;; keyword and the associated brace list.
  t (c-make-keywords-re t (c-lang-const c-after-brace-list-decl-kwds)))
(c-lang-defvar c-after-brace-list-key (c-lang-const c-after-brace-list-key))

(c-lang-defconst c-recognize-post-brace-list-type-p
  "Set to t when we recognize a colon and then a type after an enum,
e.g., enum foo : int { A, B, C };"
  t nil
  c++ t)
(c-lang-defvar c-recognize-post-brace-list-type-p
	       (c-lang-const c-recognize-post-brace-list-type-p))

(c-lang-defconst c-other-block-decl-kwds
  "Keywords where the following block (if any) contains another
declaration level that should not be considered a class.  For every
keyword here, CC Mode will add a set of special syntactic symbols for
those blocks.  E.g. if the keyword is \"foo\" then there will be
`foo-open', `foo-close', and `infoo' symbols.

The intention is that this category should be used for block
constructs that aren't related to object orientation concepts like
classes (which thus also include e.g. interfaces, templates,
contracts, structs, etc).  The more pragmatic distinction is that
while most want some indentation inside classes, it's fairly common
that they don't want it in some of these constructs, so it should be
simple to configure that differently from classes.  See also
`c-class-decl-kwds'.

If any of these also are on `c-type-list-kwds', `c-ref-list-kwds',
`c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds',
`c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses
will be handled."
  t   nil
  (c objc) '("extern")
  c++ '("namespace" "extern")
  idl '("module"
	;; In CORBA CIDL:
	"composition"))

(c-lang-defconst c-other-decl-block-key
  ;; Regexp matching the start of blocks besides classes that contain
  ;; another declaration level.
  t (c-make-keywords-re t (c-lang-const c-other-block-decl-kwds)))
(c-lang-defvar c-other-decl-block-key (c-lang-const c-other-decl-block-key))

(c-lang-defvar c-other-decl-block-key-in-symbols-alist
  (mapcar
   (lambda (elt)
     (cons elt
	   (if (string= elt "extern")
	       'inextern-lang
	     (intern (concat "in" elt)))))
   (c-lang-const c-other-block-decl-kwds))
  "Alist associating keywords in c-other-decl-block-decl-kwds with
their matching \"in\" syntactic symbols.")

(c-lang-defconst c-defun-type-name-decl-kwds
  "Keywords introducing a named block, where the name is a \"defun\"
    name."
  t (append (c-lang-const c-class-decl-kwds)
	    (c-lang-const c-brace-list-decl-kwds)))

(c-lang-defconst c-defun-type-name-decl-key
  ;; Regexp matching a keyword in `c-defun-name-decl-kwds'.
  t (c-make-keywords-re t (c-lang-const c-defun-type-name-decl-kwds)))
(c-lang-defvar c-defun-type-name-decl-key
  (c-lang-const c-defun-type-name-decl-key))

(c-lang-defconst c-typedef-decl-kwds
  "Keywords introducing declarations where the identifier(s) being
declared are types.

If any of these also are on `c-type-list-kwds', `c-ref-list-kwds',
`c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds',
`c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses
will be handled."
  ;; Default to `c-class-decl-kwds' and `c-brace-list-decl-kwds'
  ;; (since e.g. "Foo" is a type that's being defined in "class Foo
  ;; {...}").
  t    (append (c-lang-const c-class-decl-kwds)
	       (c-lang-const c-brace-list-decl-kwds))
  ;; Languages that have a "typedef" construct.
  (c c++ objc idl pike) (append (c-lang-const c-typedef-decl-kwds)
				'("typedef"))
  ;; Unlike most other languages, exception names are not handled as
  ;; types in IDL since they only can occur in "raises" specs.
  idl  (delete "exception" (append (c-lang-const c-typedef-decl-kwds) nil)))

(c-lang-defconst c-typedef-decl-key
  t  (c-make-keywords-re t (c-lang-const c-typedef-decl-kwds)))
(c-lang-defvar c-typedef-decl-key (c-lang-const c-typedef-decl-key))

(c-lang-defconst c-using-kwds
  "Keywords which behave like `using' in C++"
  t nil
  c++ '("using"))

(c-lang-defconst c-using-key
  ;; Regexp matching C++'s `using'.
  t (c-make-keywords-re t (c-lang-const c-using-kwds)))
(c-lang-defvar c-using-key (c-lang-const c-using-key))

(c-lang-defconst c-no-type-kwds
  "Keywords which remove the need to specify a type in declarations"
  t nil
  c++ '("auto"))

(c-lang-defconst c-no-type-key
  ;; Regexp matching an entry from `c-no-type-kwds'
  t (c-make-keywords-re t (c-lang-const c-no-type-kwds)))
(c-lang-defvar c-no-type-key (c-lang-const c-no-type-key))

(c-lang-defconst c-typeless-decl-kwds
  "Keywords introducing declarations where the (first) identifier
\(declarator) follows directly after the keyword, without any type.

If any of these also are on `c-type-list-kwds', `c-ref-list-kwds',
`c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds',
`c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses
will be handled."
  ;; Default to `c-class-decl-kwds' and `c-brace-list-decl-kwds'
  ;; (since e.g. "Foo" is the identifier being defined in "class Foo
  ;; {...}").
  t    (append (c-lang-const c-class-decl-kwds)
	       (c-lang-const c-brace-list-decl-kwds))
  ;; Note: "manages" for CORBA CIDL clashes with its presence on
  ;; `c-type-list-kwds' for IDL.
  idl  (append (c-lang-const c-typeless-decl-kwds)
	       '("factory" "finder" "native"
		 ;; In CORBA PSDL:
		 "key" "stores"
		 ;; In CORBA CIDL:
		 "facet"))
  pike (append (c-lang-const c-class-decl-kwds)
	       '("constant")))

(c-lang-defconst c-equals-type-clause-kwds
  "Keywords which are followed by an identifier then an \"=\"
  sign, which declares the identifier to be a type."
  t nil
  c++ '("using"))

(c-lang-defconst c-equals-type-clause-key
  ;; A regular expression which matches any member of
  ;; `c-equals-type-clause-kwds'.
  t (c-make-keywords-re t (c-lang-const c-equals-type-clause-kwds)))
(c-lang-defvar c-equals-type-clause-key (c-lang-const c-equals-type-clause-key))

(c-lang-defconst c-modifier-kwds
  "Keywords that can prefix normal declarations of identifiers
\(and typically act as flags).  Things like argument declarations
inside function headers are also considered declarations in this
sense.

If any of these also are on `c-type-list-kwds', `c-ref-list-kwds',
`c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds',
`c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses
will be handled."
  t    nil
  (c c++) '("extern" "inline" "register" "static")
  c    (append '("auto") (c-lang-const c-modifier-kwds))
  c++  (append '("constexpr" "explicit" "friend" "mutable" "template"
		 "thread_local" "virtual")
	       ;; "using" is now handled specially (2020-09-14).
	       (c-lang-const c-modifier-kwds))
  objc '("auto" "bycopy" "byref" "extern" "in" "inout" "oneway" "out" "static")
  ;; FIXME: Some of those below ought to be on `c-other-decl-kwds' instead.
  idl  '("abstract" "attribute" "const" "consumes" "custom" "emits" "import"
	 "in" "inout" "local" "multiple" "oneway" "out" "private" "provides"
	 "public" "publishes" "readonly" "typeid" "typeprefix" "uses"
	 ;; In CORBA PSDL:
	 "primary" "state"
	 ;; In CORBA CIDL:
	 "bindsTo" "delegatesTo" "implements" "proxy" "storedOn")
  ;; Note: "const" is not used in Java, but it's still a reserved keyword.
  java '("abstract" "const" "default" "final" "native" "private" "protected"
	 "public" "static" "strictfp" "synchronized" "transient" "volatile")
  pike '("final" "inline" "local" "nomask" "optional" "private" "protected"
	 "public" "static" "variant"))

(c-lang-defconst c-other-decl-kwds
  "Keywords that can start or prefix any declaration level construct,
besides those on `c-class-decl-kwds', `c-brace-list-decl-kwds',
`c-other-block-decl-kwds', `c-typedef-decl-kwds',
`c-typeless-decl-kwds' and `c-modifier-kwds'.

If any of these also are on `c-type-list-kwds', `c-ref-list-kwds',
`c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds',
`c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses
will be handled."
  t       nil
  objc    '("@class" "@defs" "@end" "@property" "@dynamic" "@synthesize"
	    "@compatibility_alias")
  java    '("import" "package")
  pike    '("import" "inherit"))

(c-lang-defconst c-decl-start-kwds
  "Keywords that always start declarations, wherever they occur.
This can be used for declarations that aren't recognized by the normal
combination of `c-decl-prefix-re' and `c-decl-start-re'."
  t    nil
  ;; Classes can be declared anywhere in a Pike expression.
  pike '("class"))

(c-lang-defconst c-decl-hangon-kwds
  "Keywords that can occur anywhere in a declaration level construct.
This is used for self-contained things that can be tacked on anywhere
on a declaration and that should be ignored to be able to recognize it
correctly.  Typical cases are compiler extensions like
\"__attribute__\" or \"__declspec\":

    __declspec(noreturn) void foo();
    class __declspec(dllexport) classname {...};
    void foo() __attribute__((noreturn));

Note that unrecognized plain symbols are skipped anyway if they occur
before the type, so such things are not necessary to mention here.
Mentioning them here is necessary only if they can occur in other
places, or if they are followed by a construct that must be skipped
over (like the parens in the \"__attribute__\" and \"__declspec\"
examples above).  In the last case, they alse need to be present on
one of `c-type-list-kwds', `c-ref-list-kwds',
`c-colon-type-list-kwds', `c-paren-nontype-kwds', `c-paren-type-kwds',
`c-<>-type-kwds', or `c-<>-arglist-kwds'."
  ;; NB: These are currently not recognized in all parts of a
  ;; declaration.  Specifically, they aren't recognized in the middle
  ;; of multi-token types, inside declarators, and between the
  ;; identifier and the arglist paren of a function declaration.
  ;;
  ;; FIXME: This ought to be user customizable since compiler stuff
  ;; like this usually is wrapped in project specific macros.  (It'd
  ;; of course be even better if we could cope without knowing this.)
  t nil
  (c c++) '(;; GCC extension.
	    "__attribute__"
	    ;; MSVC extension.
	    "__declspec"))

(c-lang-defconst c-decl-hangon-key
  ;; Adorned regexp matching `c-decl-hangon-kwds'.
  t (c-make-keywords-re t (c-lang-const c-decl-hangon-kwds)))
(c-lang-defvar c-decl-hangon-key (c-lang-const c-decl-hangon-key))

(c-lang-defconst c-prefix-spec-kwds
  ;; All keywords that can occur in the preamble of a declaration.
  ;; They typically occur before the type, but they are also matched
  ;; after presumptive types since we often can't be sure that
  ;; something is a type or just some sort of macro in front of the
  ;; declaration.  They might be ambiguous with types or type
  ;; prefixes.
  t (c--delete-duplicates (append (c-lang-const c-class-decl-kwds)
				  (c-lang-const c-brace-list-decl-kwds)
				  (c-lang-const c-other-block-decl-kwds)
				  (c-lang-const c-typedef-decl-kwds)
				  (c-lang-const c-typeless-decl-kwds)
				  (c-lang-const c-modifier-kwds)
				  (c-lang-const c-other-decl-kwds)
				  (c-lang-const c-decl-start-kwds)
				  (c-lang-const c-decl-hangon-kwds))
			  :test 'string-equal))

(c-lang-defconst c-prefix-spec-kwds-re
  ;; Adorned regexp of `c-prefix-spec-kwds'.
  t (c-make-keywords-re t (c-lang-const c-prefix-spec-kwds)))

(c-lang-defvar c-prefix-spec-kwds-re (c-lang-const c-prefix-spec-kwds-re))

(c-lang-defconst c-specifier-key
  ;; Adorned regexp of the keywords in `c-prefix-spec-kwds' that aren't
  ;; ambiguous with types or type prefixes.  These are the keywords (like
  ;; extern, namespace, but NOT template) that can modify a declaration.
  t (c-make-keywords-re t
      (c--set-difference (c-lang-const c-prefix-spec-kwds)
			 (append (c-lang-const c-type-start-kwds)
				 (c-lang-const c-<>-arglist-kwds))
			 :test 'string-equal)))
(c-lang-defvar c-specifier-key (c-lang-const c-specifier-key))

(c-lang-defconst c-postfix-spec-kwds
  ;; Keywords that can occur after argument list of a function header
  ;; declaration, i.e. in the "K&R region".
  t (append (c-lang-const c-postfix-decl-spec-kwds)
	    (c-lang-const c-decl-hangon-kwds)))

(c-lang-defconst c-not-decl-init-keywords
  ;; Adorned regexp matching all keywords that can't appear at the
  ;; start of a declaration.
  t (c-make-keywords-re t
      (c--set-difference (c-lang-const c-keywords)
			 (append (c-lang-const c-type-start-kwds)
				 (c-lang-const c-prefix-spec-kwds)
				 (c-lang-const c-typeof-kwds))
			 :test 'string-equal)))
(c-lang-defvar c-not-decl-init-keywords
  (c-lang-const c-not-decl-init-keywords))

(c-lang-defconst c-not-primitive-type-keywords
  "List of all keywords apart from primitive types (like \"int\")."
  t (c--set-difference (c-lang-const c-keywords)
		       (c-lang-const c-primitive-type-kwds)
		       :test 'string-equal)
  ;; The "more" for C++ is the QT keyword (as in "more slots:").
  ;; This variable is intended for use in c-beginning-of-statement-1.
  c++ (append (c-lang-const c-not-primitive-type-keywords) '("more")))

(c-lang-defconst c-not-primitive-type-keywords-regexp
  t (c-make-keywords-re t
      (c-lang-const c-not-primitive-type-keywords)))
(c-lang-defvar c-not-primitive-type-keywords-regexp
  (c-lang-const c-not-primitive-type-keywords-regexp))

(c-lang-defconst c-protection-kwds
  "Access protection label keywords in classes."
  t    nil
  c++  '("private" "protected" "public")
  objc '("@private" "@protected" "@package" "@public"
	 "@required" "@optional"))

(c-lang-defconst c-protection-key
  ;; A regexp match an element of `c-protection-kwds' cleanly.
  t (c-make-keywords-re t (c-lang-const c-protection-kwds)))
(c-lang-defvar c-protection-key (c-lang-const c-protection-key))

(c-lang-defconst c-post-protection-token
  "The token which (may) follow a protection keyword,
e.g. the \":\" in C++ Mode's \"public:\".  nil if there is no such token."
  t    nil
  c++  ":")
(c-lang-defvar c-post-protection-token (c-lang-const c-post-protection-token))

(c-lang-defconst c-block-decls-with-vars
  "Keywords introducing declarations that can contain a block which
might be followed by variable declarations, e.g. like \"foo\" in
\"class Foo { ... } foo;\".  So if there is a block in a declaration
like that, it ends with the following `;' and not right away.

The keywords on list are assumed to also be present on one of the
`*-decl-kwds' lists."
  t        nil
  (c objc) '("struct" "union" "enum" "typedef")
  c++      '("class" "struct" "union" "enum" "typedef"))

(c-lang-defconst c-opt-block-decls-with-vars-key
  ;; Regexp matching the `c-block-decls-with-vars' keywords, or nil in
  ;; languages without such constructs.
  t (and (c-lang-const c-block-decls-with-vars)
	 (c-make-keywords-re t (c-lang-const c-block-decls-with-vars))))
(c-lang-defvar c-opt-block-decls-with-vars-key
  (c-lang-const c-opt-block-decls-with-vars-key))

(c-lang-defconst c-postfix-decl-spec-kwds
  "Keywords introducing extra declaration specifiers in the region
between the header and the body (i.e. the \"K&R-region\") in
declarations."
  t    nil
  java '("extends" "implements" "throws")
  idl  '("context" "getraises" "manages" "primarykey" "raises" "setraises"
	 "supports"
	 ;; In CORBA PSDL:
	 "as" "const" "implements" "of" "ref"))

(c-lang-defconst c-postfix-decl-spec-key
  ;; Regexp matching the keywords in `c-postfix-decl-spec-kwds'.
  t (c-make-keywords-re t (c-lang-const c-postfix-decl-spec-kwds)))
(c-lang-defvar c-postfix-decl-spec-key
  (c-lang-const c-postfix-decl-spec-key))

(c-lang-defconst c-nonsymbol-sexp-kwds
  "Keywords that may be followed by a nonsymbol sexp before whatever
construct it's part of continues."
  t    nil
  (c c++ objc) '("extern"))

(c-lang-defconst c-make-top-level-kwds
  "Keywords which make declarations they introduce be handled as top-level."
  t    nil
  (c c++ objc) '("extern"))

(c-lang-defconst c-make-top-level-key
  ;; A regexp which matches any `c-make-top-level-kwds' keyword.
  t (c-make-keywords-re t (c-lang-const c-make-top-level-kwds)))
(c-lang-defvar c-make-top-level-key (c-lang-const c-make-top-level-key))

(c-lang-defconst c-type-list-kwds
  "Keywords that may be followed by a comma separated list of type
identifiers, where each optionally can be prefixed by keywords.  (Can
also be used for the special case when the list can contain only one
element.)

Assumed to be mutually exclusive with `c-ref-list-kwds'.  There's no
reason to put keywords on this list if they are on `c-type-prefix-kwds'.
There's also no reason to add keywords that prefixes a normal
declaration consisting of a type followed by a declarator (list), so
the keywords on `c-modifier-kwds' should normally not be listed here
either.

Note: Use `c-typeless-decl-kwds' for keywords followed by a function
or variable identifier (that's being defined)."
  t    nil
  c++  '("operator")
  objc '("@class")
  java '("import" "new" "extends" "super" "implements" "throws")
  idl  '("manages" "native" "primarykey" "supports"
	 ;; In CORBA PSDL:
	 "as" "implements" "of" "scope")
  pike '("inherit"))

(c-lang-defconst c-ref-list-kwds
  "Keywords that may be followed by a comma separated list of
reference (i.e. namespace/scope/module) identifiers, where each
optionally can be prefixed by keywords.  (Can also be used for the
special case when the list can contain only one element.)  Assumed to
be mutually exclusive with `c-type-list-kwds'.

Note: Use `c-typeless-decl-kwds' for keywords followed by a function
or variable identifier (that's being defined)."
  t    nil
  c++  '("namespace")
  java '("package")
  idl  '("import" "module"
	 ;; In CORBA CIDL:
	 "composition")
  pike '("import"))

(c-lang-defconst c-colon-type-list-kwds
  "Keywords that may be followed (not necessarily directly) by a colon
and then a comma separated list of type identifiers, where each
optionally can be prefixed by keywords.  (Can also be used for the
special case when the list can contain only one element.)"
  t    nil
  c++  '("class" "struct")
  idl  '("component" "eventtype" "home" "interface" "valuetype"
	 ;; In CORBA PSDL:
	 "storagehome" "storagetype"))

(c-lang-defconst c-colon-type-list-re
  "Regexp matched after the keywords in `c-colon-type-list-kwds' to skip
forward to the colon.  The end of the match is assumed to be directly
after the colon, so the regexp should end with \":\".  Must be a
regexp if `c-colon-type-list-kwds' isn't nil."
  t (if (c-lang-const c-colon-type-list-kwds)
	;; Disallow various common punctuation chars that can't come
	;; before the ":" that starts the inherit list after "class"
	;; or "struct" in C++.  (Also used as default for other
	;; languages.)
	(if (c-lang-const c-opt-identifier-concat-key)
	    (concat "\\([^][{}();,/#=:]\\|"
		    (c-lang-const c-opt-identifier-concat-key)
		    "\\)*:")
	  "[^][{}();,/#=:]*:")))
(c-lang-defvar c-colon-type-list-re (c-lang-const c-colon-type-list-re))

(c-lang-defconst c-paren-nontype-kwds
  "Keywords that may be followed by a parenthesis expression that doesn't
contain type identifiers."
  t       nil
  (c c++) '(;; GCC extension.
	    "__attribute__"
	    ;; MSVC extension.
	    "__declspec")
  c++ (append (c-lang-const c-paren-nontype-kwds) '("noexcept")))

(c-lang-defconst c-paren-nontype-key
  t (c-make-keywords-re t (c-lang-const c-paren-nontype-kwds)))
(c-lang-defvar c-paren-nontype-key (c-lang-const c-paren-nontype-key))

(c-lang-defconst c-paren-type-kwds
  "Keywords that may be followed by a parenthesis expression containing
type identifiers separated by arbitrary tokens."
  t    nil
  c++  '("throw")
  objc '("@defs")
  idl  '("switch")
  pike '("array" "function" "int" "mapping" "multiset" "object" "program"))

(c-lang-defconst c-paren-any-kwds
  t (c--delete-duplicates (append (c-lang-const c-paren-nontype-kwds)
				  (c-lang-const c-paren-type-kwds))
			  :test 'string-equal))

(c-lang-defconst c-<>-type-kwds
  "Keywords that may be followed by an angle bracket expression
containing type identifiers separated by \",\".  The difference from
`c-<>-arglist-kwds' is that unknown names are taken to be types and
not other identifiers.  `c-recognize-<>-arglists' is assumed to be set
if this isn't nil."
  t    nil
  objc '("id")
  idl  '("sequence"
	 ;; In CORBA PSDL:
	 "ref"))

(c-lang-defconst c-<>-arglist-kwds
  "Keywords that can be followed by a C++ style template arglist; see
`c-recognize-<>-arglists' for details.  That language constant is
assumed to be set if this isn't nil."
  t    nil
  c++  '("template")
  idl  '("fixed" "string" "wstring"))

(c-lang-defconst c-<>-sexp-kwds
  ;; All keywords that can be followed by an angle bracket sexp.
  t (c--delete-duplicates (append (c-lang-const c-<>-type-kwds)
				  (c-lang-const c-<>-arglist-kwds))
			  :test 'string-equal))

(c-lang-defconst c-opt-<>-sexp-key
  ;; Adorned regexp matching keywords that can be followed by an angle
  ;; bracket sexp.  Always set when `c-recognize-<>-arglists' is.
  t (c-make-keywords-re t (c-lang-const c-<>-sexp-kwds)))
(c-lang-defvar c-opt-<>-sexp-key (c-lang-const c-opt-<>-sexp-key))

(c-lang-defconst c-inside-<>-type-kwds
  "Keywords which, used inside a C++ style template arglist, introduce a type."
  t nil
  java '("extends" "super"))

(c-lang-defconst c-inside-<>-type-key
  t (c-make-keywords-re t (c-lang-const c-inside-<>-type-kwds)))
(c-lang-defvar c-inside-<>-type-key (c-lang-const c-inside-<>-type-key))

(c-lang-defconst c-brace-id-list-kwds
  "Keywords that may be followed by a brace block containing a comma
separated list of identifier definitions, i.e. like the list of
identifiers that follows the type in a normal declaration."
  t (c-lang-const c-brace-list-decl-kwds))

(c-lang-defconst c-block-stmt-1-kwds
  "Statement keywords followed directly by a substatement."
  t    '("do" "else")
  c++  '("do" "else" "try")
  objc '("do" "else" "@finally" "@try" "@autoreleasepool")
  java '("do" "else" "finally" "try")
  idl  nil)

(c-lang-defconst c-block-stmt-1-key
  ;; Regexp matching the start of any statement followed directly by a
  ;; substatement (doesn't match a bare block, however).
  t (c-make-keywords-re t (c-lang-const c-block-stmt-1-kwds)))
(c-lang-defvar c-block-stmt-1-key (c-lang-const c-block-stmt-1-key))

(c-lang-defconst c-block-stmt-1-2-kwds
  "Statement keywords optionally followed by a paren sexp.
Keywords here should also be in `c-block-stmt-1-kwds'."
  t nil
  java '("try"))

(c-lang-defconst c-block-stmt-1-2-key
  ;; Regexp matching the start of a statement which may be followed by a
  ;; paren sexp and will then be followed by a substatement.
  t (c-make-keywords-re t (c-lang-const c-block-stmt-1-2-kwds)))
(c-lang-defvar c-block-stmt-1-2-key (c-lang-const c-block-stmt-1-2-key))

(c-lang-defconst c-block-stmt-2-kwds
  "Statement keywords followed by a paren sexp and then by a substatement."
  t    '("for" "if" "switch" "while")
  c++  '("for" "if" "switch" "while" "catch")
  objc '("for" "if" "switch" "while" "@catch" "@synchronized")
  java '("for" "if" "switch" "while" "catch" "synchronized")
  idl  nil
  pike '("for" "if" "switch" "while" "foreach")
  awk  '("for" "if" "switch" "while"))

(c-lang-defconst c-block-stmt-2-key
  ;; Regexp matching the start of any statement followed by a paren sexp
  ;; and then by a substatement.
  t (c-make-keywords-re t (c-lang-const c-block-stmt-2-kwds)))
(c-lang-defvar c-block-stmt-2-key (c-lang-const c-block-stmt-2-key))

(c-lang-defconst c-block-stmt-kwds
  ;; Union of `c-block-stmt-1-kwds' and `c-block-stmt-2-kwds'.
  t (c--delete-duplicates (append (c-lang-const c-block-stmt-1-kwds)
				  (c-lang-const c-block-stmt-2-kwds))
			  :test 'string-equal))

(c-lang-defconst c-block-stmt-hangon-kwds
  "Keywords which may directly follow a member of `c-block-stmt-1/2-kwds'."
  t nil
  c++ '("constexpr"))

(c-lang-defconst c-block-stmt-hangon-key
  ;; Regexp matching a "hangon" keyword in a `c-block-stmt-1/2-kwds'
  ;; construct.
  t (c-make-keywords-re t (c-lang-const c-block-stmt-hangon-kwds)))
(c-lang-defvar c-block-stmt-hangon-key (c-lang-const c-block-stmt-hangon-key))

(c-lang-defconst c-opt-block-stmt-key
  ;; Regexp matching the start of any statement that has a
  ;; substatement (except a bare block).  Nil in languages that
  ;; don't have such constructs.
  t (if (or (c-lang-const c-block-stmt-1-kwds)
	    (c-lang-const c-block-stmt-2-kwds))
	(c-make-keywords-re t
	  (append (c-lang-const c-block-stmt-1-kwds)
		  (c-lang-const c-block-stmt-2-kwds)))))
(c-lang-defvar c-opt-block-stmt-key (c-lang-const c-opt-block-stmt-key))

(c-lang-defconst c-simple-stmt-kwds
  "Statement keywords followed by an expression or nothing."
  t    '("break" "continue" "goto" "return")
  c++    '("break" "continue" "goto" "return" "co_return")
  objc '("break" "continue" "goto" "return" "@throw")
  ;; Note: `goto' is not valid in Java, but the keyword is still reserved.
  java '("break" "continue" "goto" "return" "throw")
  idl  nil
  pike '("break" "continue" "return")
  awk  '(;; Not sure about "delete", "exit", "getline", etc. ; ACM 2002/5/30
	 "break" "continue" "return" "delete" "exit" "getline" "next"
	 "nextfile" "print" "printf"))

(c-lang-defconst c-simple-stmt-key
  ;; Adorned regexp matching `c-simple-stmt-kwds'.
  t (c-make-keywords-re t (c-lang-const c-simple-stmt-kwds)))
(c-lang-defvar c-simple-stmt-key (c-lang-const c-simple-stmt-key))

(c-lang-defconst c-paren-stmt-kwds
  "Statement keywords followed by a parenthesis expression that
nevertheless contains a list separated with `;' and not `,'."
  t    '("for")
  idl  nil)

(c-lang-defconst c-paren-stmt-key
  ;; Adorned regexp matching `c-paren-stmt-kwds'.
  t (c-make-keywords-re t (c-lang-const c-paren-stmt-kwds)))
(c-lang-defvar c-paren-stmt-key (c-lang-const c-paren-stmt-key))

(c-lang-defconst c-asm-stmt-kwds
  "Statement keywords followed by an assembler expression."
  t nil
  (c c++) '("asm" "__asm__")) ;; Not standard, but common.

(c-lang-defconst c-opt-asm-stmt-key
  ;; Regexp matching the start of an assembler statement.  Nil in
  ;; languages that don't support that.
  t (if (c-lang-const c-asm-stmt-kwds)
	(c-make-keywords-re t (c-lang-const c-asm-stmt-kwds))))
(c-lang-defvar c-opt-asm-stmt-key (c-lang-const c-opt-asm-stmt-key))

(c-lang-defconst c-case-kwds
  "The keyword(s) which introduce a \"case\" like construct.
This construct is \"<keyword> <expression> :\"."
  t '("case"))

(c-lang-defconst c-case-kwds-regexp
  ;; Adorned regexp matching any "case"-like keyword.
  t (c-make-keywords-re t (c-lang-const c-case-kwds)))
(c-lang-defvar c-case-kwds-regexp (c-lang-const c-case-kwds-regexp))

(c-lang-defconst c-label-kwds
  "Keywords introducing colon terminated labels in blocks."
  t '("case" "default"))

(c-lang-defconst c-label-kwds-regexp
  ;; Adorned regexp matching any keyword that introduces a label.
  t (c-make-keywords-re t (c-lang-const c-label-kwds)))
(c-lang-defvar c-label-kwds-regexp (c-lang-const c-label-kwds-regexp))

(c-lang-defconst c-before-label-kwds
  "Keywords that might be followed by a label identifier."
  t    '("goto")
  (java pike) (append '("break" "continue")
		      (c-lang-const c-before-label-kwds))
  idl  nil
  awk  nil)

(c-lang-defconst c-constant-kwds
  "Keywords for constants."
  t       nil
  c       '("NULL" ;; Not a keyword, but practically works as one.
	    "false" "true")		; Defined in C99.
  c++     (append
           '("nullptr")
           (c-lang-const c-constant-kwds c))
  objc    '("nil" "Nil" "YES" "NO" "IBAction" "IBOutlet"
	    "NS_DURING" "NS_HANDLER" "NS_ENDHANDLER")
  idl     '("TRUE" "FALSE")
  java    '("true" "false" "null") ; technically "literals", not keywords
  pike    '("UNDEFINED")) ;; Not a keyword, but practically works as one.

(c-lang-defconst c-primary-expr-kwds
  "Keywords besides constants and operators that start primary expressions."
  t    nil
  c++  '("operator" "this")
  objc '("super" "self")
  java '("this")
  pike '("this")) ;; Not really a keyword, but practically works as one.

(c-lang-defconst c-expr-kwds
  ;; Keywords that can occur anywhere in expressions.  Built from
  ;; `c-primary-expr-kwds' and all keyword operators in `c-operators'.
  t (c--delete-duplicates
     (append (c-lang-const c-primary-expr-kwds)
	     (c-filter-ops (c-lang-const c-operator-list)
			   t
			   "\\`\\(\\w\\|\\s_\\)+\\'"))
     :test 'string-equal))

(c-lang-defconst c-lambda-kwds
  "Keywords that start lambda constructs, i.e. function definitions in
expressions."
  t    nil
  pike '("lambda"))

(c-lang-defconst c-inexpr-block-kwds
  "Keywords that start constructs followed by statement blocks which can
be used in expressions (the gcc extension for this in C and C++ is
handled separately by `c-recognize-paren-inexpr-blocks')."
  t    nil
  pike '("catch" "gauge"))

(c-lang-defconst c-inexpr-class-kwds
  "Keywords that can start classes inside expressions."
  t    nil
  java '("new")
  pike '("class"))

(c-lang-defconst c-inexpr-brace-list-kwds
  "Keywords that can start brace list blocks inside expressions.
Note that Java specific rules are currently applied to tell this from
`c-inexpr-class-kwds'."
  t    nil
  java '("new"))

(c-lang-defconst c-opt-inexpr-brace-list-key
  ;; Regexp matching the start of a brace list in an expression, or
  ;; nil in languages that don't have such things.  This should not
  ;; match brace lists recognized through `c-special-brace-lists'.
  t (and (c-lang-const c-inexpr-brace-list-kwds)
	 (c-make-keywords-re t (c-lang-const c-inexpr-brace-list-kwds))))
(c-lang-defvar c-opt-inexpr-brace-list-key
  (c-lang-const c-opt-inexpr-brace-list-key))

(c-lang-defconst c-flat-decl-block-kwds
  ;; Keywords that can introduce another declaration level, i.e. where a
  ;; following "{" isn't a function block or brace list.  Note that, for
  ;; historical reasons, `c-decl-block-key' is NOT constructed from this lang
  ;; const.
  t (c--delete-duplicates
     (append (c-lang-const c-class-decl-kwds)
	     (c-lang-const c-other-block-decl-kwds)
	     (c-lang-const c-inexpr-class-kwds))
     :test 'string-equal))

(c-lang-defconst c-brace-stack-thing-key
  ;; Regexp matching any keyword or operator relevant to the brace stack (see
  ;; `c-update-brace-stack' in cc-engine.el).
  t (c-make-keywords-re 'appendable
      (append
       (c-lang-const c-flat-decl-block-kwds)
       (if (c-lang-const c-recognize-<>-arglists)
	   '("{" "}" ";" "," ")" ":" "<")
	 '("{" "}" ";" "," ")" ":")))))
(c-lang-defvar c-brace-stack-thing-key (c-lang-const c-brace-stack-thing-key))

(c-lang-defconst c-brace-stack-no-semi-key
  ;; Regexp matching any keyword or operator relevant to the brace stack when
  ;; a semicolon is not relevant (see `c-update-brace-stack' in
  ;; cc-engine.el).
  t (c-make-keywords-re 'appendable
      (append
       (c-lang-const c-flat-decl-block-kwds)
       (if (c-lang-const c-recognize-<>-arglists)
	   '("{" "}" "<")
	 '("{" "}")))))
(c-lang-defvar c-brace-stack-no-semi-key
  (c-lang-const c-brace-stack-no-semi-key))

(c-lang-defconst c-decl-block-key
  ;; Regexp matching keywords in any construct that contain another
  ;; declaration level, i.e. that isn't followed by a function block
  ;; or brace list.  When the first submatch matches, it's an
  ;; unambiguous construct, otherwise it's an ambiguous match that
  ;; might also be the return type of a function declaration.
  t (let* ((decl-kwds (append (c-lang-const c-class-decl-kwds)
			      (c-lang-const c-other-block-decl-kwds)
			      (c-lang-const c-inexpr-class-kwds)))
	   (unambiguous (c--set-difference decl-kwds
					   (c-lang-const c-type-start-kwds)
					   :test 'string-equal))
	   (ambiguous (c--intersection decl-kwds
				       (c-lang-const c-type-start-kwds)
				       :test 'string-equal)))
      (if ambiguous
	  (concat (c-make-keywords-re t unambiguous)
		  "\\|"
		  (c-make-keywords-re t ambiguous))
	(c-make-keywords-re t unambiguous))))
(c-lang-defvar c-decl-block-key (c-lang-const c-decl-block-key))

(c-lang-defconst c-bitfield-kwds
  "Keywords that can introduce bitfields."
  t nil
  (c c++ objc) '("char" "int" "long" "signed" "unsigned"))

(c-lang-defconst c-opt-bitfield-key
  ;; Regexp matching the start of a bitfield (not uniquely), or nil in
  ;; languages without bitfield support.
  t       nil
  (c c++) (c-make-keywords-re t (c-lang-const c-bitfield-kwds)))
(c-lang-defvar c-opt-bitfield-key (c-lang-const c-opt-bitfield-key))

(c-lang-defconst c-other-kwds
  "Keywords not accounted for by any other `*-kwds' language constant."
  t    nil
  idl  '("truncatable"
	 ;; In CORBA CIDL: (These are declaration keywords that never
	 ;; can start a declaration.)
	 "entity" "process" "service" "session" "storage"))

(c-lang-defconst c-std-abbrev-keywords
  "List of keywords which may need to cause electric indentation."
  t '("else" "while")
  c++ (append (c-lang-const c-std-abbrev-keywords) '("catch"))
  java (append (c-lang-const c-std-abbrev-keywords) '("catch" "finally"))
  idl nil)
(c-lang-defvar c-std-abbrev-keywords (c-lang-const c-std-abbrev-keywords))

;;; Constants built from keywords.

;; Note: No `*-kwds' language constants may be defined below this point.

(eval-and-compile
  (defconst c-kwds-lang-consts
    ;; List of all the language constants that contain keyword lists.
    (let (list)
      (mapatoms (lambda (sym)
		  (when (and (boundp sym)
			     (string-match "-kwds\\'" (symbol-name sym)))
		    ;; Make the list of globally interned symbols
		    ;; instead of ones interned in `c-lang-constants'.
		    (setq list (cons (intern (symbol-name sym)) list))))
		c-lang-constants)
      list)))

(c-lang-defconst c-keywords
  ;; All keywords as a list.
  t (c--delete-duplicates
     (c-lang-defconst-eval-immediately
      `(append ,@(mapcar (lambda (kwds-lang-const)
			   `(c-lang-const ,kwds-lang-const))
			 c-kwds-lang-consts)
	       nil))
     :test 'string-equal))

(c-lang-defconst c-keywords-regexp
  ;; All keywords as an adorned regexp.
  t (c-make-keywords-re t (c-lang-const c-keywords)))
(c-lang-defvar c-keywords-regexp (c-lang-const c-keywords-regexp))

(c-lang-defconst c-keyword-member-alist
  ;; An alist with all the keywords in the cars.  The cdr for each
  ;; keyword is a list of the symbols for the `*-kwds' lists that
  ;; contains it.
  t (let ((kwd-list-alist
	   (c-lang-defconst-eval-immediately
	    `(list ,@(mapcar (lambda (kwds-lang-const)
			       `(cons ',kwds-lang-const
				      (c-lang-const ,kwds-lang-const)))
			     c-kwds-lang-consts))))
	  lang-const kwd-list kwd
	  result-alist elem)
      (while kwd-list-alist
	(setq lang-const (caar kwd-list-alist)
	      kwd-list (cdar kwd-list-alist)
	      kwd-list-alist (cdr kwd-list-alist))
	(while kwd-list
	  (setq kwd (car kwd-list)
		kwd-list (cdr kwd-list))
	  (unless (setq elem (assoc kwd result-alist))
	    (setq result-alist (cons (setq elem (list kwd)) result-alist)))
	  (unless (memq lang-const (cdr elem))
	    (setcdr elem (cons lang-const (cdr elem))))))
      result-alist))

(c-lang-defvar c-keywords-obarray
  ;; An obarray containing all keywords as symbols.  The property list
  ;; of each symbol has a non-nil entry for the specific `*-kwds'
  ;; lists it's a member of.
  ;;
  ;; E.g. to see whether the string str contains a keyword on
  ;; `c-class-decl-kwds', one can do like this:
  ;;     (get (intern-soft str c-keyword-obarray) 'c-class-decl-kwds)
  ;; Which preferably is written using the associated functions in
  ;; cc-engine:
  ;;     (c-keyword-member (c-keyword-sym str) 'c-class-decl-kwds)

  ;; The obarray is not stored directly as a language constant since
  ;; the printed representation for obarrays used in .elc files isn't
  ;; complete.

  (let* ((alist (c-lang-const c-keyword-member-alist))
	 kwd lang-const-list
	 (obarray (make-vector (* (length alist) 2) 0)))
    (while alist
      (setq kwd (caar alist)
	    lang-const-list (cdar alist)
	    alist (cdr alist))
      (setplist (intern kwd obarray)
		;; Emacs has an odd bug that causes `mapcan' to fail
		;; with unintelligible errors.  (XEmacs works.)
		;; (2015-06-24): This bug has not yet been fixed.
		;;(mapcan (lambda (lang-const)
		;;	      (list lang-const t))
		;;	    lang-const-list)
		(apply 'nconc (mapcar (lambda (lang-const)
					(list lang-const t))
				      lang-const-list))))
    obarray))

(c-lang-defconst c-regular-keywords-regexp
  ;; Adorned regexp matching all keywords that should be fontified
  ;; with the keywords face.  I.e. that aren't types or constants.
  t (c-make-keywords-re t
      (c--set-difference (c-lang-const c-keywords)
			 (append (c-lang-const c-primitive-type-kwds)
				 (c-lang-const c-constant-kwds))
			 :test 'string-equal)))
(c-lang-defvar c-regular-keywords-regexp
  (c-lang-const c-regular-keywords-regexp))

(c-lang-defconst c-primary-expr-regexp
  ;; Regexp matching the start of any primary expression, i.e. any
  ;; literal, symbol, prefix operator, and '('.  It doesn't need to
  ;; exclude keywords; they are excluded afterwards unless the second
  ;; submatch matches. If the first but not the second submatch
  ;; matches then it is an ambiguous primary expression; it could also
  ;; be a match of e.g. an infix operator. (The case with ambiguous
  ;; keyword operators isn't handled.)

  t (let* ((prefix-ops
	    (c-filter-ops (c-lang-const c-operators)
			  '(prefix)
			  (lambda (op)
			    ;; Filter out the special case prefix
			    ;; operators that are close parens.
			    (not (string-match "\\s)" op)))))

	   (nonkeyword-prefix-ops
	    (c-filter-ops prefix-ops
			  t
			  "\\`\\(\\s.\\|\\s(\\|\\s)\\)+\\'"))

	   (in-or-postfix-ops
	    (c-filter-ops (c-lang-const c-operators)
			  '(postfix
			    postfix-if-paren
			    left-assoc
			    right-assoc
			    right-assoc-sequence)
			  t)))

      (concat
       "\\("
       ;; Take out all symbol class operators from `prefix-ops' and make the
       ;; first submatch from them together with `c-primary-expr-kwds'.
       (c-make-keywords-re t
	 (append (c-lang-const c-primary-expr-kwds)
		 (c--set-difference prefix-ops nonkeyword-prefix-ops
				    :test 'string-equal)))

       "\\|"
       ;; Match all ambiguous operators.
       (c-make-keywords-re nil
	 (c--intersection nonkeyword-prefix-ops in-or-postfix-ops
			  :test 'string-equal))
       "\\)"

       "\\|"
       ;; Now match all other symbols.
       (c-lang-const c-symbol-start)

       "\\|"
       ;; The chars that can start integer and floating point
       ;; constants.
       "\\.?[0-9]"

       "\\|"
       ;; The unambiguous operators from `prefix-ops'.
       (c-make-keywords-re nil
	 (c--set-difference nonkeyword-prefix-ops in-or-postfix-ops
			    :test 'string-equal))

       "\\|"
       ;; Match string and character literals.
       "\\s\""
       (if (memq 'gen-string-delim c-emacs-features)
	   "\\|\\s|"
	 ""))))
(c-lang-defvar c-primary-expr-regexp (c-lang-const c-primary-expr-regexp))

\f
;;; Additional constants for parser-level constructs.

(c-lang-defconst c-decl-start-colon-kwd-re
  "Regexp matching a keyword that is followed by a colon, where
  the whole construct can precede a declaration.
  E.g. \"public:\" in C++."
  t regexp-unmatchable
  c++ (c-make-keywords-re t (c-lang-const c-protection-kwds)))
(c-lang-defvar c-decl-start-colon-kwd-re
  (c-lang-const c-decl-start-colon-kwd-re))

(c-lang-defconst c-decl-prefix-re
  "Regexp matching something that might precede a declaration, cast or
label, such as the last token of a preceding statement or declaration.
This is used in the common situation where a declaration or cast
doesn't start with any specific token that can be searched for.

The regexp should not match bob; that is done implicitly.  It can't
require a match longer than one token.  The end of the token is taken
to be at the end of the first submatch, which is assumed to always
match.  It's undefined whether identifier syntax (see
`c-identifier-syntax-table') is in effect or not.  This regexp is
assumed to be a superset of `c-label-prefix-re' if
`c-recognize-colon-labels' is set.

Besides this, `c-decl-start-kwds' is used to find declarations.

Note: This variable together with `c-decl-start-re' and
`c-decl-start-kwds' is only used to detect \"likely\"
declaration/cast/label starts.  I.e. they might produce more matches
but should not miss anything (or else it's necessary to use text
properties - see the next note).  Wherever they match, the following
construct is analyzed to see if it indeed is a declaration, cast or
label.  That analysis is not cheap, so it's important that not too
many false matches are triggered.

Note: If a declaration/cast/label start can't be detected with this
variable, it's necessary to use the `c-type' text property with the
value `c-decl-end' on the last char of the last token preceding the
declaration.  See the comment blurb at the start of cc-engine.el for
more info."

  ;; We match a sequence of characters to skip over things like \"};\"
  ;; more quickly.  We match ")" in C for K&R region declarations, and
  ;; in all languages except Java for when a cpp macro definition
  ;; begins with a declaration.
  t "\\([{}();,]+\\)"
  java "\\([{}(;,<]+\\)"
  ;; Match "<" in C++ to get the first argument in a template arglist.
  ;; In that case there's an additional check in `c-find-decl-spots'
  ;; that it got open paren syntax.  Match ":" to aid in picking up
  ;; "public:", etc.  This involves additional checks in
  ;; `c-find-decl-prefix-search' to prevent a match of identifiers
  ;; or labels.
  c++ "\\([{}();:,<]+\\)"
  ;; Additionally match the protection directives in Objective-C.
  ;; Note that this doesn't cope with the longer directives, which we
  ;; would have to match from start to end since they don't end with
  ;; any easily recognized characters.
  objc (concat "\\([{}();,]+\\|"
	       (c-make-keywords-re nil (c-lang-const c-protection-kwds))
	       "\\)")
  ;; Pike is like C but we also match "[" for multiple value
  ;; assignments and type casts.
  pike "\\([{}()[;,]+\\)")
(c-lang-defvar c-decl-prefix-re (c-lang-const c-decl-prefix-re)
  'dont-doc)

(c-lang-defconst c-decl-start-re
  "Regexp matching the start of any declaration, cast or label.
It's used on the token after the one `c-decl-prefix-re' matched.  This
regexp should not try to match those constructs accurately as it's
only used as a sieve to avoid spending more time checking other
constructs."
  t (c-lang-const c-identifier-start))
(c-lang-defvar c-decl-start-re (c-lang-const c-decl-start-re))

(c-lang-defconst c-decl-prefix-or-start-re
  ;; Regexp matching something that might precede or start a
  ;; declaration, cast or label.
  ;;
  ;; If the first submatch matches, it's taken to match the end of a
  ;; token that might precede such a construct, e.g. ';', '}' or '{'.
  ;; It's built from `c-decl-prefix-re'.
  ;;
  ;; If the first submatch did not match, we have either a #define construct
  ;; without parentheses or the match of the whole regexp is taken to be at
  ;; the first token in the declaration.  `c-decl-start-re' is not checked in
  ;; these cases.
  ;;
  ;; Design note: The reason the same regexp is used to match both
  ;; tokens that precede declarations and start them is to avoid an
  ;; extra regexp search from the previous declaration spot in
  ;; `c-find-decl-spots'.  Users of `c-find-decl-spots' also count on
  ;; it finding all declaration/cast/label starts in approximately
  ;; linear order, so we can't do the searches in two separate passes.
  t (cond
     ((and (c-lang-const c-decl-start-kwds)
	   (c-lang-const c-anchored-hash-define-no-parens))
      (concat (c-lang-const c-decl-prefix-re)
	      "\\|" (c-lang-const c-anchored-hash-define-no-parens)
	      "\\|" (c-make-keywords-re t (c-lang-const c-decl-start-kwds))))
     ((c-lang-const c-decl-start-kwds)
      (concat (c-lang-const c-decl-prefix-re)
	      "\\|" (c-make-keywords-re t (c-lang-const c-decl-start-kwds))))
     ((c-lang-const c-anchored-hash-define-no-parens)
      (concat (c-lang-const c-decl-prefix-re)
	      "\\|" (c-lang-const c-anchored-hash-define-no-parens)))
     (t (c-lang-const c-decl-prefix-re))))
(c-lang-defvar c-decl-prefix-or-start-re
  (c-lang-const c-decl-prefix-or-start-re))

(c-lang-defconst c-dposr-cpp-macro-depth
  ;; The match number of `c-anchored-hash-define-no-parens''s first match
  ;; within `c-decl-prefix-or-start-re', or nil if there is no such component.
  t (if (c-lang-const c-anchored-hash-define-no-parens)
	(1+ (regexp-opt-depth (c-lang-const c-decl-prefix-re)))))
(c-lang-defvar c-dposr-cpp-macro-depth (c-lang-const c-dposr-cpp-macro-depth))

(c-lang-defconst c-cast-parens
  ;; List containing the paren characters that can open a cast, or nil in
  ;; languages without casts.
  t (c-filter-ops (c-lang-const c-operators)
		  '(prefix)
		  "\\`\\s(\\'"
		  (lambda (op) (elt op 0))))
(c-lang-defvar c-cast-parens (c-lang-const c-cast-parens))

(c-lang-defconst c-block-prefix-disallowed-chars
  "List of syntactically relevant characters that never can occur before
the open brace in any construct that contains a brace block, e.g. in
the \"class Foo: public Bar\" part of:

    class Foo: public Bar {int x();} a, *b;

If parens can occur, the chars inside those aren't filtered with this
list.

`<' and `>' should be disallowed even if angle bracket arglists can
occur.  That since the search function needs to stop at them anyway to
ensure they are given paren syntax.

This is used to skip backward from the open brace to find the region
in which to look for a construct like \"class\", \"enum\",
\"namespace\" or whatever.  That skipping should be as tight as
possible for good performance."

  ;; Default to all chars that only occurs in nonsymbol tokens outside
  ;; identifiers.
  t (c--set-difference
     (c-lang-const c-nonsymbol-token-char-list)
     (c-filter-ops (append (c-lang-const c-identifier-ops)
			   (list (cons nil
				       (c-lang-const c-after-id-concat-ops))))
		   t
		   t
		   (lambda (op)
		     (let ((pos 0) res)
		       (while (string-match "\\(\\s.\\|\\s(\\|\\s)\\)"
					    op pos)
			 (setq res (cons (aref op (match-beginning 1)) res)
			       pos (match-end 0)))
		       res))))

  ;; Allow cpp operations (where applicable).
  t (if (c-lang-const c-opt-cpp-prefix)
	(c--set-difference (c-lang-const c-block-prefix-disallowed-chars)
			   '(?#))
      (c-lang-const c-block-prefix-disallowed-chars))

  ;; Allow ':' for inherit list starters.
  (c++ objc idl) (c--set-difference (c-lang-const c-block-prefix-disallowed-chars)
				    '(?:))

  ;; Allow ',' for multiple inherits.
  (c++ java) (c--set-difference (c-lang-const c-block-prefix-disallowed-chars)
				'(?,))

  ;; Allow parentheses for anonymous inner classes in Java and class
  ;; initializer lists in Pike.
  (java pike) (c--set-difference (c-lang-const c-block-prefix-disallowed-chars)
				 '(?\( ?\)))

  ;; Allow '"' for extern clauses (e.g. extern "C" {...}).
  (c c++ objc) (c--set-difference (c-lang-const c-block-prefix-disallowed-chars)
				  '(?\" ?')))

(c-lang-defconst c-block-prefix-charset
  ;; `c-block-prefix-disallowed-chars' as an inverted charset suitable
  ;; for `c-syntactic-skip-backward'.
  t (c-make-bare-char-alt (c-lang-const c-block-prefix-disallowed-chars) t))
(c-lang-defvar c-block-prefix-charset (c-lang-const c-block-prefix-charset))

(c-lang-defconst c-type-decl-prefix-keywords-key
  ;; Regexp matching any keyword operator that might precede the identifier in
  ;; a declaration, e.g. "const" or nil.  It doesn't test there is no "_"
  ;; following the keyword.
  t (if (or (c-lang-const c-type-modifier-kwds) (c-lang-const c-modifier-kwds))
	(concat
	 (regexp-opt (c--delete-duplicates
		      (append (c-lang-const c-type-modifier-kwds)
			      (c-lang-const c-modifier-kwds))
		      :test 'string-equal)
		     t)
	 "\\>")))

(c-lang-defconst c-type-decl-prefix-key
  "Regexp matching any declarator operator that might precede the
identifier in a declaration, e.g. the \"*\" in \"char *argv\".  This
regexp should match \"(\" if parentheses are valid in declarators.
The operator found is either the first submatch (if it is not a
keyword) or the second submatch (if it is)."
  t (if (c-lang-const c-type-decl-prefix-keywords-key)
	(concat "\\(\\`a\\`\\)\\|"	; 1 - will never match.
		(c-lang-const c-type-decl-prefix-keywords-key) ; 2
		"\\([^_]\\|$\\)")			       ; 3
      regexp-unmatchable) ;; Default to a regexp that never matches.
  ;; Check that there's no "=" afterwards to avoid matching tokens
  ;; like "*=".
  (c objc) (concat "\\("		; 1
		   "[*(]"
		   "\\)\\|"
		   (c-lang-const c-type-decl-prefix-keywords-key) ; 2
		   "\\([^=_]\\|$\\)")	; 3
  c++  (concat "\\("			; 1
	       "&&"
	       "\\|"
	       "\\.\\.\\."
	       "\\|"
	       "[*(&~]"
	       "\\)\\|\\("				      ; 2
	       (c-lang-const c-type-decl-prefix-keywords-key) ; 3
	       "\\|"
	       (concat "\\("   ; 4
		       ;; If this matches there's special treatment in
		       ;; `c-font-lock-declarators' and
		       ;; `c-font-lock-declarations' that check for a
		       ;; complete name followed by ":: *".
		       (c-lang-const c-identifier-start)
		       "\\)")
	       "\\)"
	       "\\([^=_]\\|$\\)")	; 5
  pike "\\(\\*\\)\\([^=]\\|$\\)")

(c-lang-defvar c-type-decl-prefix-key (c-lang-const c-type-decl-prefix-key)
  'dont-doc)

(c-lang-defconst c-type-decl-operator-prefix-key
  "Regexp matching any declarator operator which isn't a keyword,
that might precede the identifier in a declaration, e.g. the
\"*\" in \"char *argv\".  The end of the first submatch is taken
as the end of the operator.  Identifier syntax is in effect when
this is matched (see `c-identifier-syntax-table')."
  t ;; Default to a regexp that never matches.
    regexp-unmatchable
  ;; Check that there's no "=" afterwards to avoid matching tokens
  ;; like "*=".
  (c objc) (concat "\\(\\*\\)"
		   "\\([^=]\\|$\\)")
  c++  (concat "\\("
	       "\\.\\.\\."
	       "\\|"
	       "\\*"
	       "\\)"
	       "\\([^=]\\|$\\)")
  pike "\\(\\*\\)\\([^=]\\|$\\)")
(c-lang-defvar c-type-decl-operator-prefix-key
  (c-lang-const c-type-decl-operator-prefix-key))

(c-lang-defconst c-type-decl-suffix-key
  "Regexp matching the declarator operators that might follow after the
identifier in a declaration, e.g. the \"[\" in \"char argv[]\".  This
regexp should match \")\" if parentheses are valid in declarators.  If
it matches an open paren of some kind, the type declaration check
continues at the corresponding close paren, otherwise the end of the
first submatch is taken as the end of the operator.  Identifier syntax
is in effect when this is matched (see `c-identifier-syntax-table')."
  ;; Default to a regexp that matches `c-type-modifier-kwds' and a
  ;; function argument list parenthesis.
  t    (if (c-lang-const c-type-modifier-kwds)
	   (concat "\\((\\|"
		   (regexp-opt (c-lang-const c-type-modifier-kwds) t) "\\>"
		   "\\)")
	 "\\((\\)")
  (c c++ objc) (concat
		"\\("
		"[)[(]"
		(if (c-lang-const c-type-modifier-kwds)
		    (concat
		     "\\|"
		     ;; "throw" in `c-type-modifier-kwds' is followed
		     ;; by a parenthesis list, but no extra measures
		     ;; are necessary to handle that.
		     (regexp-opt (c-lang-const c-type-modifier-kwds) t)
		     "\\>")
		  "")
		"\\)")
  java "\\([[()]\\)"
  idl "\\([[(]\\)")
(c-lang-defvar c-type-decl-suffix-key (c-lang-const c-type-decl-suffix-key)
  'dont-doc)

(c-lang-defconst c-after-suffixed-type-decl-key
  "This regexp is matched after a declarator expression where
`c-type-decl-suffix-key' has matched.  If it matches then the
construct is taken as a declaration.  It's typically used to match the
beginning of a function body or whatever might occur after the
function header in a function declaration or definition.  It's
undefined whether identifier syntax (see `c-identifier-syntax-table')
is in effect or not.

Note that it's used in cases like after \"foo (bar)\" so it should
only match when it's certain that it's a declaration, e.g., \"{\" but
not \",\" or \";\"."
  t "{"
  ;; If K&R style declarations should be recognized then one could
  ;; consider to match the start of any symbol since we want to match
  ;; the start of the first declaration in the "K&R region".  That
  ;; could however produce false matches on code like "FOO(bar) x"
  ;; where FOO is a cpp macro, so it's better to leave it out and rely
  ;; on the other heuristics in that case.
  t (if (c-lang-const c-postfix-spec-kwds)
	;; Add on the keywords in `c-postfix-spec-kwds'.
	(concat (c-lang-const c-after-suffixed-type-decl-key)
		"\\|"
		(c-make-keywords-re t (c-lang-const c-postfix-spec-kwds)))
      (c-lang-const c-after-suffixed-type-decl-key))
  ;; Also match the colon that starts a base class initializer list in
  ;; C++.  That can be confused with a function call before the colon
  ;; in a ? : operator, but we count on that `c-decl-prefix-re' won't
  ;; match before such a thing (as a declaration-level construct;
  ;; matches inside arglist contexts are already excluded).
  c++ "[{:]")
(c-lang-defvar c-after-suffixed-type-decl-key
  (c-lang-const c-after-suffixed-type-decl-key)
  'dont-doc)

(c-lang-defconst c-after-suffixed-type-maybe-decl-key
  ;; Regexp that in addition to `c-after-suffixed-type-decl-key'
  ;; matches ";" and ",".
  t (concat "\\(" (c-lang-const c-after-suffixed-type-decl-key) "\\)"
	    "\\|[;,]"))
(c-lang-defvar c-after-suffixed-type-maybe-decl-key
  (c-lang-const c-after-suffixed-type-maybe-decl-key))

(c-lang-defconst c-opt-type-concat-key
  "Regexp matching operators that concatenate types, e.g. the \"|\" in
\"int|string\" in Pike.  The end of the first submatch is taken as the
end of the operator.  nil in languages without such operators.  It's
undefined whether identifier syntax (see `c-identifier-syntax-table')
is in effect or not."
  t nil
  pike "\\([|.&]\\)\\($\\|[^|.&]\\)")
(c-lang-defvar c-opt-type-concat-key (c-lang-const c-opt-type-concat-key)
  'dont-doc)

(c-lang-defconst c-opt-type-suffix-key
  "Regexp matching operators that might follow after a type, or nil in
languages that don't have such operators.  The end of the first
submatch is taken as the end of the operator.  This should not match
things like C++ template arglists if `c-recognize-<>-arglists' is set.
It's undefined whether identifier syntax (see `c-identifier-syntax-table')
is in effect or not."
  t nil
  (c c++ objc pike) "\\(\\.\\.\\.\\)"
  java (concat "\\(\\[" (c-lang-const c-simple-ws) "*\\]\\|\\.\\.\\.\\)"))
(c-lang-defvar c-opt-type-suffix-key (c-lang-const c-opt-type-suffix-key))

(c-lang-defvar c-known-type-key
  ;; Regexp matching the known type identifiers.  This is initialized
  ;; from the type keywords and `*-font-lock-extra-types'.  The first
  ;; submatch is the one that matches the type.  Note that this regexp
  ;; assumes that symbol constituents like '_' and '$' have word
  ;; syntax.
  (let* ((extra-types
	  (when (boundp (c-mode-symbol "font-lock-extra-types"))
	    (c-mode-var "font-lock-extra-types")))
	 (regexp-strings
	  (delq nil (mapcar (lambda (re)
			      (when (string-match "[][.*+?^$\\]" re)
				re))
			    extra-types)))
	 (plain-strings
	  (delq nil (mapcar (lambda (re)
			      (unless (string-match "[][.*+?^$\\]" re)
				re))
			    extra-types))))
    (concat "\\<\\("
	    (c-concat-separated
	     (append (list (c-make-keywords-re nil
			     (append (c-lang-const c-primitive-type-kwds)
				     plain-strings)))
		     regexp-strings)
	     "\\|")
	    "\\)\\>")))

(c-lang-defconst c-special-brace-lists
"List of open- and close-chars that makes up a pike-style brace list,
i.e., for a ([ ]) list there should be a cons (?\\[ . ?\\]) in this
list."
  t    nil
  pike '((?{ . ?}) (?\[ . ?\]) (?< . ?>)))
(c-lang-defvar c-special-brace-lists (c-lang-const c-special-brace-lists))

(c-lang-defconst c-recognize-knr-p
  "Non-nil means K&R style argument declarations are valid."
  t nil
  c t)
(c-lang-defvar c-recognize-knr-p (c-lang-const c-recognize-knr-p))

(c-lang-defconst c-pre-id-bracelist-key
  "A regexp matching tokens which, preceding an identifier, signify a bracelist.
"
  t regexp-unmatchable
  c++ "new\\([^[:alnum:]_$]\\|$\\)\\|&&?\\(\\S.\\|$\\)")
(c-lang-defvar c-pre-id-bracelist-key (c-lang-const c-pre-id-bracelist-key))

(c-lang-defconst c-recognize-typeless-decls
  "Non-nil means function declarations without return type should be
recognized.  That can introduce an ambiguity with parenthesized macro
calls before a brace block.  This setting does not affect declarations
that are preceded by a declaration starting keyword, so
e.g. `c-typeless-decl-kwds' may still be used when it's set to nil."
  t nil
  (c c++ objc java) t)
(c-lang-defvar c-recognize-typeless-decls
  (c-lang-const c-recognize-typeless-decls))

(c-lang-defconst c-recognize-<>-arglists
  "Non-nil means C++ style template arglists should be handled.  More
specifically, this means a comma separated list of types or
expressions surrounded by \"<\" and \">\".  It's always preceded by an
identifier or one of the keywords on `c-<>-type-kwds' or
`c-<>-arglist-kwds'.  If there's an identifier before then the whole
expression is considered to be a type."
  t (or (consp (c-lang-const c-<>-type-kwds))
	(consp (c-lang-const c-<>-arglist-kwds)))
  java t)	    ; 2008-10-19.  This is crude.  The syntax for java
		    ; generics is not yet coded in CC Mode.
(c-lang-defvar c-recognize-<>-arglists (c-lang-const c-recognize-<>-arglists))

(c-lang-defconst c-<>-notable-chars-re
  "A regexp matching any single character notable inside a <...> construct.
This must include \"<\" and \">\", and should include \",\", and
any character which cannot be valid inside such a construct.
This is used in `c-forward-<>-arglist-recur' to try to detect
sequences of tokens which cannot be a template/generic construct.
When \"(\" is present, that defun will attempt to parse a
parenthesized expression inside the template.  When \")\" is
present it will treat an unbalanced closing paren as a sign of
the invalidity of the putative template construct."
  t "[<;{},|+&>)-]"
  c++ "[<;{},>()]")
(c-lang-defvar c-<>-notable-chars-re (c-lang-const c-<>-notable-chars-re))

(c-lang-defconst c-enum-clause-introduction-re
  ;; A regexp loosely matching the start of an enum clause, starting at the
  ;; keyword itself, and extending up to the "{".  It may match text which
  ;; isn't such a construct; more accurate tests will rule these out when
  ;; needed.
  t (if (c-lang-const c-brace-list-decl-kwds)
	(concat
	 "\\<\\("
	 (c-make-keywords-re nil (c-lang-const c-brace-list-decl-kwds))
	 "\\)\\>"
	 ;; Disallow various common punctuation chars that can't come
	 ;; before the '{' of the enum list, to avoid searching too far.
	 "[^][{};/#=]*"
	 "{")
      regexp-unmatchable))
(c-lang-defvar c-enum-clause-introduction-re
	       (c-lang-const c-enum-clause-introduction-re))

(c-lang-defconst c-enums-contain-decls
  "Non-nil means that an enum structure can contain declarations."
  t nil
  java t)
(c-lang-defvar c-enums-contain-decls (c-lang-const c-enums-contain-decls))

(c-lang-defconst c-recognize-paren-inits
  "Non-nil means that parenthesis style initializers exist,
i.e. constructs like

Foo bar (gnu);

in addition to the more classic

Foo bar = gnu;"
  t nil
  c++ t)
(c-lang-defvar c-recognize-paren-inits (c-lang-const c-recognize-paren-inits))

(c-lang-defconst c-recognize-bare-brace-inits
  "Non-nil means that brace initializers without \"=\" exist,
i.e. constructs like

int foo[] {1, 2, 3};

in addition to the more classic

int foo[] = {1, 2, 3};"
  t nil
  c++ t)
(c-lang-defvar c-recognize-bare-brace-inits
	       (c-lang-const c-recognize-bare-brace-inits))

(c-lang-defconst c-recognize-paren-inexpr-blocks
  "Non-nil to recognize gcc style in-expression blocks,
i.e. compound statements surrounded by parentheses inside expressions."
  t nil
  (c c++) t)
(c-lang-defvar c-recognize-paren-inexpr-blocks
  (c-lang-const c-recognize-paren-inexpr-blocks))

(c-lang-defconst c-opt-<>-arglist-start
  ;; Regexp matching the start of angle bracket arglists in languages
  ;; where `c-recognize-<>-arglists' is set.  Does not exclude
  ;; keywords outside `c-<>-arglist-kwds'.  The first submatch is
  ;; assumed to surround the preceding symbol.  The whole match is
  ;; assumed to end directly after the opening "<".
  t (if (c-lang-const c-recognize-<>-arglists)
	(concat "\\("
		(c-lang-const c-symbol-key)
		"\\)"
		(c-lang-const c-syntactic-ws)
		"<")))
(c-lang-defvar c-opt-<>-arglist-start (c-lang-const c-opt-<>-arglist-start))

(c-lang-defconst c-opt-<>-arglist-start-in-paren
  ;; Regexp that in addition to `c-opt-<>-arglist-start' matches close
  ;; parens.  The first submatch is assumed to surround
  ;; `c-opt-<>-arglist-start'.
  t (if (c-lang-const c-opt-<>-arglist-start)
	(concat "\\("
		(c-lang-const c-opt-<>-arglist-start)
		"\\)\\|\\s)")))
(c-lang-defvar c-opt-<>-arglist-start-in-paren
  (c-lang-const c-opt-<>-arglist-start-in-paren))

(c-lang-defconst c-opt-postfix-decl-spec-key
  ;; Regexp matching the beginning of a declaration specifier in the
  ;; region between the header and the body of a declaration.
  ;;
  ;; TODO: This is currently not used uniformly; c++-mode and
  ;; java-mode each have their own ways of using it.
  t    nil
  c++  (concat ":?"
	       (c-lang-const c-simple-ws) "*"
	       "\\(virtual" (c-lang-const c-simple-ws) "+\\)?\\("
	       (c-make-keywords-re nil (c-lang-const c-protection-kwds))
	       "\\)" (c-lang-const c-simple-ws) "+"
	       "\\(" (c-lang-const c-symbol-key) "\\)")
  java (c-make-keywords-re t (c-lang-const c-postfix-spec-kwds)))
(c-lang-defvar c-opt-postfix-decl-spec-key
  (c-lang-const c-opt-postfix-decl-spec-key))

(c-lang-defconst c-recognize-colon-labels
  "Non-nil if generic labels ending with \":\" should be recognized.
That includes labels in code and access keys in classes.  This does
not apply to labels recognized by `c-label-kwds' and
`c-opt-extra-label-key'."
  t nil
  (c c++ objc java pike) t)
(c-lang-defvar c-recognize-colon-labels
  (c-lang-const c-recognize-colon-labels))

(c-lang-defconst c-label-prefix-re
  "Regexp like `c-decl-prefix-re' that matches any token that can precede
a generic colon label.  Not used if `c-recognize-colon-labels' is
nil."
  t "\\([{};]+\\)")
(c-lang-defvar c-label-prefix-re
  (c-lang-const c-label-prefix-re))

(c-lang-defconst c-nonlabel-token-key
  "Regexp matching things that can't occur in generic colon labels,
neither in a statement nor in a declaration context.  The regexp is
tested at the beginning of every sexp in a suspected label,
i.e. before \":\".  Only used if `c-recognize-colon-labels' is set."
  t (concat
     ;; All keywords except `c-label-kwds' and `c-protection-kwds'.
     (c-make-keywords-re t
       (c--set-difference (c-lang-const c-keywords)
			  (append (c-lang-const c-label-kwds)
				  (c-lang-const c-protection-kwds))
			  :test 'string-equal)))
  ;; Don't allow string literals, except in AWK and Java.  Character constants are OK.
  (c objc pike idl) (concat "\"\\|"
				 (c-lang-const c-nonlabel-token-key))
  ;; Also check for open parens in C++, to catch member init lists in
  ;; constructors.  We normally allow it so that macros with arguments
  ;; work in labels.
  c++ (concat "\\s(\\|\"\\|" (c-lang-const c-nonlabel-token-key)))
(c-lang-defvar c-nonlabel-token-key (c-lang-const c-nonlabel-token-key))

(c-lang-defconst c-nonlabel-nonparen-token-key
  "Regexp matching things that can't occur in generic colon labels,
neither in a statement nor in a declaration context, with the
exception of an open parenthesis.  The regexp is tested at the
beginning of every sexp in a suspected label, i.e. before \":\".
Only used if `c-recognize-colon-labels' is set."
  ;; This lang const is the same as `c-nonlabel-token-key', except for a
  ;; slight difference in the c++-mode value.
  t (concat
     ;; All keywords except `c-label-kwds' and `c-protection-kwds'.
     (c-make-keywords-re t
       (c--set-difference (c-lang-const c-keywords)
			  (append (c-lang-const c-label-kwds)
				  (c-lang-const c-protection-kwds))
			  :test 'string-equal)))
  ;; Don't allow string literals, except in AWK and Java.  Character constants are OK.
  (c objc pike idl) (concat "\"\\|"
			    (c-lang-const c-nonlabel-nonparen-token-key))
  ;; Also check for open parens in C++, to catch member init lists in
  ;; constructors.  We normally allow it so that macros with arguments
  ;; work in labels.
  c++ (concat "[{[]\\|\"\\|" (c-lang-const c-nonlabel-nonparen-token-key)))
(c-lang-defvar c-nonlabel-nonparen-token-key
  (c-lang-const c-nonlabel-nonparen-token-key))

(c-lang-defconst c-nonlabel-token-2-key
  "Regexp matching things that can't occur two symbols before a colon in
a label construct.  This catches C++'s inheritance construct \"class foo
: bar\".  Only used if `c-recognize-colon-labels' is set."
  t regexp-unmatchable
  c++ (c-make-keywords-re t '("class")))
(c-lang-defvar c-nonlabel-token-2-key (c-lang-const c-nonlabel-token-2-key))

(c-lang-defconst c-opt-extra-label-key
  "Optional regexp matching labels.
Normally, labels are detected according to `c-nonlabel-token-key',
`c-decl-prefix-re' and `c-nonlabel-decl-prefix-re'.  This regexp can
be used if there are additional labels that aren't recognized that
way."
  t    nil
  objc (c-make-keywords-re t (c-lang-const c-protection-kwds)))
(c-lang-defvar c-opt-extra-label-key (c-lang-const c-opt-extra-label-key))

(c-lang-defconst c-opt-friend-key
  ;; Regexp describing friend declarations classes, or nil in
  ;; languages that don't have such things.
  ;;
  ;; TODO: Ought to use `c-prefix-spec-kwds-re' or similar, and the
  ;; template skipping isn't done properly.  This will disappear soon.
  t    nil
  c++  (concat "friend" (c-lang-const c-simple-ws) "+"
	       "\\|"
	       (concat "template"
		       (c-lang-const c-simple-ws) "*"
		       "<.+>"
		       (c-lang-const c-simple-ws) "*"
		       "friend"
		       (c-lang-const c-simple-ws) "+")))
(c-lang-defvar c-opt-friend-key (c-lang-const c-opt-friend-key))

(c-lang-defconst c-opt-method-key
  ;; Special regexp to match the start of Objective-C methods.  The
  ;; first submatch is assumed to end after the + or - key.
  t    nil
  objc (concat
	;; TODO: Ought to use a better method than anchoring on bol.
	"^\\s *"
	"\\([+-]\\)"
	(c-lang-const c-simple-ws) "*"
	(concat "\\("			; Return type.
		"([^)]*)"
		(c-lang-const c-simple-ws) "*"
		"\\)?")
	"\\(" (c-lang-const c-symbol-key) "\\)"))
(c-lang-defvar c-opt-method-key (c-lang-const c-opt-method-key))

(c-lang-defconst c-type-decl-end-used
  ;; Must be set in buffers where the `c-type' text property might be
  ;; used with the value `c-decl-end'.
  ;;
  ;; `c-decl-end' is used to mark the ends of labels and access keys
  ;; to make interactive refontification work better.
  t (or (c-lang-const c-recognize-colon-labels)
	(and (c-lang-const c-label-kwds) t))
  ;; `c-decl-end' is used to mark the end of the @-style directives in
  ;; Objective-C.
  objc t)
(c-lang-defvar c-type-decl-end-used (c-lang-const c-type-decl-end-used))

(c-lang-defconst c-maybe-decl-faces
  "List of faces that might be put at the start of a type when
`c-font-lock-declarations' runs.  This must be evaluated (with `eval') at
runtime to get the actual list of faces.  This ensures that face name
aliases in Emacs are resolved."
  t '(list nil
	   font-lock-type-face
	   c-reference-face-name
	   font-lock-keyword-face)
  java (append (c-lang-const c-maybe-decl-faces)
	       '(font-lock-preprocessor-face)))
(c-lang-defvar c-maybe-decl-faces (c-lang-const c-maybe-decl-faces))

\f
;;; Wrap up the `c-lang-defvar' system.

;; Compile in the list of language variables that has been collected
;; with the `c-lang-defvar' and `c-lang-setvar' macros.  Note that the
;; first element of each is nil.
(defconst c-lang-variable-inits (cc-eval-when-compile c-lang-variable-inits))
(defconst c-emacs-variable-inits (cc-eval-when-compile c-emacs-variable-inits))

;; Make the `c-lang-setvar' variables buffer local in the current buffer.
;; These are typically standard emacs variables such as `comment-start'.
(defmacro c-make-emacs-variables-local ()
  `(progn
     ,@(mapcar (lambda (init)
		 `(make-local-variable ',(car init)))
	       (cdr c-emacs-variable-inits))))

(defun c-make-init-lang-vars-fun (mode)
  "Create a function that initializes all the language dependent variables
for the given mode.

This function should be evaluated at compile time, so that the
function it returns is byte compiled with all the evaluated results
from the language constants.  Use the `c-init-language-vars' macro to
accomplish that conveniently."

  (if (cc-bytecomp-is-compiling)
      ;; No need to byte compile this lambda since the byte compiler is
      ;; smart enough to detect the `funcall' construct in the
      ;; `c-init-language-vars' macro below and compile it all straight
      ;; into the function that contains `c-init-language-vars'.
      `(lambda ()

	 ;; This let sets up the context for `c-mode-var' and similar
	 ;; that could be in the result from `c--macroexpand-all'.
	 (let ((c-buffer-is-cc-mode ',mode)
	       current-var source-eval)
	   (c-make-emacs-variables-local)
	   (condition-case err

	       (if (eq c-version-sym ',c-version-sym)
		   (setq ,@(let ((c-buffer-is-cc-mode mode)
				 (c-lang-const-expansion 'immediate))
			     ;; `c-lang-const' will expand to the evaluated
			     ;; constant immediately in `c--macroexpand-all'
			     ;; below.
			      (c--mapcan
			       (lambda (init)
				 `(current-var ',(car init)
					       ,(car init) ,(c--macroexpand-all
							     (elt init 1))))
			       ;; Note: The following `append' copies the
			       ;; first argument.  That list is small, so
			       ;; this doesn't matter too much.
			       (append (cdr c-emacs-variable-inits)
				       (cdr c-lang-variable-inits)))))

		 ;; This diagnostic message isn't useful for end
		 ;; users, so it's disabled.
		 ;;(unless (get ',mode 'c-has-warned-lang-consts)
		 ;;  (message ,(concat "%s compiled with CC Mode %s "
		 ;;		       "but loaded with %s - evaluating "
		 ;;		       "language constants from source")
		 ;;	      ',mode ,c-version c-version)
		 ;;  (put ',mode 'c-has-warned-lang-consts t))

		 (setq source-eval t)
		 (let ((init ',(append (cdr c-emacs-variable-inits)
				       (cdr c-lang-variable-inits))))
		   (dolist (var-init init)
		     (setq current-var (car var-init))
		     (set (car var-init) (eval (cadr var-init))))))

	     (error
	      (if current-var
		  (message "Eval error in the `c-lang-defvar' or `c-lang-setvar' for `%s'%s: %S"
			   current-var
			   (if source-eval
			       (format "\
 (fallback source eval - %s compiled with CC Mode %s but loaded with %s)"
				       ',mode ,c-version c-version)
			     "")
			   err)
		(signal (car err) (cdr err)))))))

    ;; Being evaluated from source.  Always use the dynamic method to
    ;; work well when `c-lang-defvar's in this file are reevaluated
    ;; interactively.
    `(lambda ()
       (require 'cc-langs)
       (let ((c-buffer-is-cc-mode ',mode)
	     (init (append (cdr c-emacs-variable-inits)
			   (cdr c-lang-variable-inits)))
	     current-var)
	 (c-make-emacs-variables-local)
	 (condition-case err

	     (dolist (var-init init)
	       (setq current-var (car var-init))
	       (set (car var-init) (eval (cadr var-init))))

	   (error
	    (if current-var
		(message
		 "Eval error in the `c-lang-defvar' or `c-lang-setver' for `%s' (source eval): %S"
		 current-var err)
	      (signal (car err) (cdr err)))))))
    ))

(defmacro c-init-language-vars (mode)
  "Initialize all the language dependent variables for the given mode.
This macro is expanded at compile time to a form tailored for the mode
in question, so MODE must be a constant.  Therefore MODE is not
evaluated and should not be quoted."
  `(funcall ,(c-make-init-lang-vars-fun mode)))

\f
(cc-provide 'cc-langs)

;; Local Variables:
;; indent-tabs-mode: t
;; tab-width: 8
;; End:
;;; cc-langs.el ends here

debug log:

solving 9577f55e87 ...
found 9577f55e87 in https://yhetil.org/emacs/X+9LyWW/jJwHnkgV@ACM/
found c3cd81e1e8 in https://git.savannah.gnu.org/cgit/emacs.git
preparing index
index prepared:
100644 c3cd81e1e82fa22f245d0e2c55bd8b7780973c6b	lisp/progmodes/cc-langs.el

applying [1/1] https://yhetil.org/emacs/X+9LyWW/jJwHnkgV@ACM/
diff --git a/lisp/progmodes/cc-langs.el b/lisp/progmodes/cc-langs.el
index c3cd81e1e8..9577f55e87 100644

Checking patch lisp/progmodes/cc-langs.el...
Applied patch lisp/progmodes/cc-langs.el cleanly.

index at:
100644 9577f55e8789dd5b9e3c03fecdf542b64ca4e583	lisp/progmodes/cc-langs.el

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/emacs.git
	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.