summaryrefslogtreecommitdiffstats
path: root/generic/tclInt.h
blob: 6d6916cde4323b9f1573615d6cb5a7fe7aa88b6a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
/*
 * tclInt.h --
 *
 *	Declarations of things used internally by the Tcl interpreter.
 *
 * Copyright (c) 1987-1993 The Regents of the University of California.
 * Copyright (c) 1993-1997 Lucent Technologies.
 * Copyright (c) 1994-1998 Sun Microsystems, Inc.
 * Copyright (c) 1998-1999 by Scriptics Corporation.
 * Copyright (c) 2001, 2002 by Kevin B. Kenny.  All rights reserved.
 * Copyright (c) 2007 Daniel A. Steffen <das@users.sourceforge.net>
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tclInt.h,v 1.342 2007/11/11 19:32:16 msofer Exp $
 */

#ifndef _TCLINT
#define _TCLINT

/*
 * Some numerics configuration options
 */

#undef NO_WIDE_TYPE
#undef ACCEPT_NAN

/*
 * Common include files needed by most of the Tcl source files are included
 * here, so that system-dependent personalizations for the include files only
 * have to be made in once place. This results in a few extra includes, but
 * greater modularity. The order of the three groups of #includes is
 * important. For example, stdio.h is needed by tcl.h, and the _ANSI_ARGS_
 * declaration in tcl.h is needed by stdlib.h in some configurations.
 */

#ifdef HAVE_TCL_CONFIG_H
#include "tclConfig.h"
#endif
#ifndef _TCL
#include "tcl.h"
#endif

#include <stdio.h>

#include <ctype.h>
#ifdef NO_LIMITS_H
#   include "../compat/limits.h"
#else
#   include <limits.h>
#endif
#ifdef NO_STDLIB_H
#   include "../compat/stdlib.h"
#else
#   include <stdlib.h>
#endif
#ifdef NO_STRING_H
#include "../compat/string.h"
#else
#include <string.h>
#endif
#ifdef STDC_HEADERS
#include <stddef.h>
#else
typedef int ptrdiff_t;
#endif

/*
 * Ensure WORDS_BIGENDIAN is defined correcly:
 * Needs to happen here in addition to configure to work with fat compiles on
 * Darwin (where configure runs only once for multiple architectures).
 */

#ifdef HAVE_SYS_TYPES_H
#    include <sys/types.h>
#endif
#ifdef HAVE_SYS_PARAM_H
#    include <sys/param.h>
#endif
#ifdef BYTE_ORDER
#    ifdef BIG_ENDIAN
#	 if BYTE_ORDER == BIG_ENDIAN
#	     undef WORDS_BIGENDIAN
#	     define WORDS_BIGENDIAN 1
#	 endif
#    endif
#    ifdef LITTLE_ENDIAN
#	 if BYTE_ORDER == LITTLE_ENDIAN
#	     undef WORDS_BIGENDIAN
#	 endif
#    endif
#endif

/*
 * Used to tag functions that are only to be visible within the module being
 * built and not outside it (where this is supported by the linker).
 */

#ifndef MODULE_SCOPE
#   ifdef __cplusplus
#	define MODULE_SCOPE extern "C"
#   else
#	define MODULE_SCOPE extern
#   endif
#endif

/*
 * When Tcl_WideInt and long are the same type, there's no value in
 * having a tclWideIntType separate from the tclIntType.
 */
#ifdef TCL_WIDE_INT_IS_LONG
#define NO_WIDE_TYPE
#endif

/*
 * Macros used to cast between pointers and integers (e.g. when storing an int
 * in ClientData), on 64-bit architectures they avoid gcc warning about "cast
 * to/from pointer from/to integer of different size".
 */

#if !defined(INT2PTR) && !defined(PTR2INT)
#   if defined(HAVE_INTPTR_T) || defined(intptr_t)
#	define INT2PTR(p) ((void*)(intptr_t)(p))
#	define PTR2INT(p) ((int)(intptr_t)(p))
#   else
#	define INT2PTR(p) ((void*)(p))
#	define PTR2INT(p) ((int)(p))
#   endif
#endif
#if !defined(UINT2PTR) && !defined(PTR2UINT)
#   if defined(HAVE_UINTPTR_T) || defined(uintptr_t)
#	define UINT2PTR(p) ((void*)(uintptr_t)(p))
#	define PTR2UINT(p) ((unsigned int)(uintptr_t)(p))
#   else
#	define UINT2PTR(p) ((void*)(p))
#	define PTR2UINT(p) ((unsigned int)(p))
#   endif
#endif

/*
 * The following procedures allow namespaces to be customized to support
 * special name resolution rules for commands/variables.
 */

struct Tcl_ResolvedVarInfo;

typedef Tcl_Var (Tcl_ResolveRuntimeVarProc)(Tcl_Interp *interp,
	struct Tcl_ResolvedVarInfo *vinfoPtr);

typedef void (Tcl_ResolveVarDeleteProc)(struct Tcl_ResolvedVarInfo *vinfoPtr);

/*
 * The following structure encapsulates the routines needed to resolve a
 * variable reference at runtime. Any variable specific state will typically
 * be appended to this structure.
 */

typedef struct Tcl_ResolvedVarInfo {
    Tcl_ResolveRuntimeVarProc *fetchProc;
    Tcl_ResolveVarDeleteProc *deleteProc;
} Tcl_ResolvedVarInfo;

typedef int (Tcl_ResolveCompiledVarProc) (Tcl_Interp *interp,
	CONST84 char *name, int length, Tcl_Namespace *context,
	Tcl_ResolvedVarInfo **rPtr);

typedef int (Tcl_ResolveVarProc) (Tcl_Interp *interp, CONST84 char *name,
	Tcl_Namespace *context, int flags, Tcl_Var *rPtr);

typedef int (Tcl_ResolveCmdProc) (Tcl_Interp *interp, CONST84 char *name,
	Tcl_Namespace *context, int flags, Tcl_Command *rPtr);

typedef struct Tcl_ResolverInfo {
    Tcl_ResolveCmdProc *cmdResProc;
				/* Procedure handling command name
				 * resolution. */
    Tcl_ResolveVarProc *varResProc;
				/* Procedure handling variable name resolution
				 * for variables that can only be handled at
				 * runtime. */
    Tcl_ResolveCompiledVarProc *compiledVarResProc;
				/* Procedure handling variable name resolution
				 * at compile time. */
} Tcl_ResolverInfo;

/*
 *----------------------------------------------------------------
 * Data structures related to namespaces.
 *----------------------------------------------------------------
 */

typedef struct Tcl_Ensemble Tcl_Ensemble;
typedef struct NamespacePathEntry NamespacePathEntry;

/*
 * Special hashtable for variables: this is just a Tcl_HashTable with an nsPtr
 * field added at the end: in this way variables can find their namespace
 * without having to copy a pointer in their struct: they can access it via
 * their hPtr->tablePtr.
 */

typedef struct TclVarHashTable {
    Tcl_HashTable table;
    struct Namespace *nsPtr;
} TclVarHashTable;

/*
 * This is for itcl - it likes to search our varTables directly :(
 */

#define TclVarHashFindVar(tablePtr, key) \
    TclVarHashCreateVar((tablePtr), (key), NULL)


/*
 * The structure below defines a namespace.
 * Note: the first five fields must match exactly the fields in a
 * Tcl_Namespace structure (see tcl.h). If you change one, be sure to change
 * the other.
 */

typedef struct Namespace {
    char *name;			/* The namespace's simple (unqualified) name.
				 * This contains no ::'s. The name of the
				 * global namespace is "" although "::" is an
				 * synonym. */
    char *fullName;		/* The namespace's fully qualified name. This
				 * starts with ::. */
    ClientData clientData;	/* An arbitrary value associated with this
				 * namespace. */
    Tcl_NamespaceDeleteProc *deleteProc;
				/* Procedure invoked when deleting the
				 * namespace to, e.g., free clientData. */
    struct Namespace *parentPtr;/* Points to the namespace that contains this
				 * one. NULL if this is the global
				 * namespace. */
    Tcl_HashTable childTable;	/* Contains any child namespaces. Indexed by
				 * strings; values have type (Namespace *). */
    long nsId;			/* Unique id for the namespace. */
    Tcl_Interp *interp;		/* The interpreter containing this
				 * namespace. */
    int flags;			/* OR-ed combination of the namespace status
				 * flags NS_DYING and NS_DEAD listed below. */
    int activationCount;	/* Number of "activations" or active call
				 * frames for this namespace that are on the
				 * Tcl call stack. The namespace won't be
				 * freed until activationCount becomes zero. */
    int refCount;		/* Count of references by namespaceName
				 * objects. The namespace can't be freed until
				 * refCount becomes zero. */
    Tcl_HashTable cmdTable;	/* Contains all the commands currently
				 * registered in the namespace. Indexed by
				 * strings; values have type (Command *).
				 * Commands imported by Tcl_Import have
				 * Command structures that point (via an
				 * ImportedCmdRef structure) to the Command
				 * structure in the source namespace's command
				 * table. */
    TclVarHashTable varTable;	/* Contains all the (global) variables
				 * currently in this namespace. Indexed by
				 * strings; values have type (Var *). */
    char **exportArrayPtr;	/* Points to an array of string patterns
				 * specifying which commands are exported. A
				 * pattern may include "string match" style
				 * wildcard characters to specify multiple
				 * commands; however, no namespace qualifiers
				 * are allowed. NULL if no export patterns are
				 * registered. */
    int numExportPatterns;	/* Number of export patterns currently
				 * registered using "namespace export". */
    int maxExportPatterns;	/* Mumber of export patterns for which space
				 * is currently allocated. */
    int cmdRefEpoch;		/* Incremented if a newly added command
				 * shadows a command for which this namespace
				 * has already cached a Command * pointer;
				 * this causes all its cached Command*
				 * pointers to be invalidated. */
    int resolverEpoch;		/* Incremented whenever (a) the name
				 * resolution rules change for this namespace
				 * or (b) a newly added command shadows a
				 * command that is compiled to bytecodes. This
				 * invalidates all byte codes compiled in the
				 * namespace, causing the code to be
				 * recompiled under the new rules.*/
    Tcl_ResolveCmdProc *cmdResProc;
				/* If non-null, this procedure overrides the
				 * usual command resolution mechanism in Tcl.
				 * This procedure is invoked within
				 * Tcl_FindCommand to resolve all command
				 * references within the namespace. */
    Tcl_ResolveVarProc *varResProc;
				/* If non-null, this procedure overrides the
				 * usual variable resolution mechanism in Tcl.
				 * This procedure is invoked within
				 * Tcl_FindNamespaceVar to resolve all
				 * variable references within the namespace at
				 * runtime. */
    Tcl_ResolveCompiledVarProc *compiledVarResProc;
				/* If non-null, this procedure overrides the
				 * usual variable resolution mechanism in Tcl.
				 * This procedure is invoked within
				 * LookupCompiledLocal to resolve variable
				 * references within the namespace at compile
				 * time. */
    int exportLookupEpoch;	/* Incremented whenever a command is added to
				 * a namespace, removed from a namespace or
				 * the exports of a namespace are changed.
				 * Allows TIP#112-driven command lists to be
				 * validated efficiently. */
    Tcl_Ensemble *ensembles;	/* List of structures that contain the details
				 * of the ensembles that are implemented on
				 * top of this namespace. */
    Tcl_Obj *unknownHandlerPtr;	/* A script fragment to be used when command
				 * resolution in this namespace fails. TIP
				 * 181. */
    int commandPathLength;	/* The length of the explicit path. */
    NamespacePathEntry *commandPathArray;
				/* The explicit path of the namespace as an
				 * array. */
    NamespacePathEntry *commandPathSourceList;
				/* Linked list of path entries that point to
				 * this namespace. */
} Namespace;

/*
 * An entry on a namespace's command resolution path.
 */

struct NamespacePathEntry {
    Namespace *nsPtr;		/* What does this path entry point to? If it
				 * is NULL, this path entry points is
				 * redundant and should be skipped. */
    Namespace *creatorNsPtr;	/* Where does this path entry point from? This
				 * allows for efficient invalidation of
				 * references when the path entry's target
				 * updates its current list of defined
				 * commands. */
    NamespacePathEntry *prevPtr, *nextPtr;
				/* Linked list pointers or NULL at either end
				 * of the list that hangs off Namespace's
				 * commandPathSourceList field. */
};

/*
 * Flags used to represent the status of a namespace:
 *
 * NS_DYING -	1 means Tcl_DeleteNamespace has been called to delete the
 *		namespace but there are still active call frames on the Tcl
 *		stack that refer to the namespace. When the last call frame
 *		referring to it has been popped, it's variables and command
 *		will be destroyed and it will be marked "dead" (NS_DEAD). The
 *		namespace can no longer be looked up by name.
 * NS_DEAD -	1 means Tcl_DeleteNamespace has been called to delete the
 *		namespace and no call frames still refer to it. Its variables
 *		and command have already been destroyed. This bit allows the
 *		namespace resolution code to recognize that the namespace is
 *		"deleted". When the last namespaceName object in any byte code
 *		unit that refers to the namespace has been freed (i.e., when
 *		the namespace's refCount is 0), the namespace's storage will
 *		be freed.
 * NS_KILLED    1 means that TclTeardownNamespace has already been called on
 *              this namespace and it should not be called again [Bug 1355942]
 */

#define NS_DYING	0x01
#define NS_DEAD		0x02
#define NS_KILLED       0x04

/*
 * Flags passed to TclGetNamespaceForQualName:
 *
 * TCL_GLOBAL_ONLY		- (see tcl.h) Look only in the global ns.
 * TCL_NAMESPACE_ONLY		- (see tcl.h) Look only in the context ns.
 * TCL_CREATE_NS_IF_UNKNOWN	- Create unknown namespaces.
 * TCL_FIND_ONLY_NS		- The name sought is a namespace name.
 */

#define TCL_CREATE_NS_IF_UNKNOWN	0x800
#define TCL_FIND_ONLY_NS		0x1000

/*
 * The data cached in an ensemble subcommand's Tcl_Obj rep (reference in
 * otherValuePtr field). This structure is not shared between Tcl_Objs
 * referring to the same subcommand, even where one is a duplicate of another.
 */

typedef struct {
    Namespace *nsPtr;		/* The namespace backing the ensemble which
				 * this is a subcommand of. */
    int epoch;			/* Used to confirm when the data in this
				 * really structure matches up with the
				 * ensemble. */
    Tcl_Command token;		/* Reference to the comamnd for which this
				 * structure is a cache of the resolution. */
    char *fullSubcmdName;	/* The full (local) name of the subcommand,
				 * allocated with ckalloc(). */
    Tcl_Obj *realPrefixObj;	/* Object containing the prefix words of the
				 * command that implements this ensemble
				 * subcommand. */
} EnsembleCmdRep;

/*
 *----------------------------------------------------------------
 * Data structures related to variables. These are used primarily in tclVar.c
 *----------------------------------------------------------------
 */

/*
 * The following structure defines a variable trace, which is used to invoke a
 * specific C procedure whenever certain operations are performed on a
 * variable.
 */

typedef struct VarTrace {
    Tcl_VarTraceProc *traceProc;/* Procedure to call when operations given by
				 * flags are performed on variable. */
    ClientData clientData;	/* Argument to pass to proc. */
    int flags;			/* What events the trace procedure is
				 * interested in: OR-ed combination of
				 * TCL_TRACE_READS, TCL_TRACE_WRITES,
				 * TCL_TRACE_UNSETS and TCL_TRACE_ARRAY. */
    struct VarTrace *nextPtr;	/* Next in list of traces associated with a
				 * particular variable. */
} VarTrace;

/*
 * The following structure defines a command trace, which is used to invoke a
 * specific C procedure whenever certain operations are performed on a
 * command.
 */

typedef struct CommandTrace {
    Tcl_CommandTraceProc *traceProc;
				/* Procedure to call when operations given by
				 * flags are performed on command. */
    ClientData clientData;	/* Argument to pass to proc. */
    int flags;			/* What events the trace procedure is
				 * interested in: OR-ed combination of
				 * TCL_TRACE_RENAME, TCL_TRACE_DELETE. */
    struct CommandTrace *nextPtr;
				/* Next in list of traces associated with a
				 * particular command. */
    int refCount;		/* Used to ensure this structure is not
				 * deleted too early. Keeps track of how many
				 * pieces of code have a pointer to this
				 * structure. */
} CommandTrace;

/*
 * When a command trace is active (i.e. its associated procedure is executing)
 * one of the following structures is linked into a list associated with the
 * command's interpreter. The information in the structure is needed in order
 * for Tcl to behave reasonably if traces are deleted while traces are active.
 */

typedef struct ActiveCommandTrace {
    struct Command *cmdPtr;	/* Command that's being traced. */
    struct ActiveCommandTrace *nextPtr;
				/* Next in list of all active command traces
				 * for the interpreter, or NULL if no more. */
    CommandTrace *nextTracePtr;	/* Next trace to check after current trace
				 * procedure returns; if this trace gets
				 * deleted, must update pointer to avoid using
				 * free'd memory. */
    int reverseScan;		/* Boolean set true when traces are scanning
				 * in reverse order. */
} ActiveCommandTrace;

/*
 * When a variable trace is active (i.e. its associated procedure is
 * executing) one of the following structures is linked into a list associated
 * with the variable's interpreter. The information in the structure is needed
 * in order for Tcl to behave reasonably if traces are deleted while traces
 * are active.
 */

typedef struct ActiveVarTrace {
    struct Var *varPtr;		/* Variable that's being traced. */
    struct ActiveVarTrace *nextPtr;
				/* Next in list of all active variable traces
				 * for the interpreter, or NULL if no more. */
    VarTrace *nextTracePtr;	/* Next trace to check after current trace
				 * procedure returns; if this trace gets
				 * deleted, must update pointer to avoid using
				 * free'd memory. */
} ActiveVarTrace;

/*
 * The following structure describes an enumerative search in progress on an
 * array variable; this are invoked with options to the "array" command.
 */

typedef struct ArraySearch {
    int id;			/* Integer id used to distinguish among
				 * multiple concurrent searches for the same
				 * array. */
    struct Var *varPtr;		/* Pointer to array variable that's being
				 * searched. */
    Tcl_HashSearch search;	/* Info kept by the hash module about progress
				 * through the array. */
    Tcl_HashEntry *nextEntry;	/* Non-null means this is the next element to
				 * be enumerated (it's leftover from the
				 * Tcl_FirstHashEntry call or from an "array
				 * anymore" command). NULL means must call
				 * Tcl_NextHashEntry to get value to
				 * return. */
    struct ArraySearch *nextPtr;/* Next in list of all active searches for
				 * this variable, or NULL if this is the last
				 * one. */
} ArraySearch;

/*
 * The structure below defines a variable, which associates a string name with
 * a Tcl_Obj value. These structures are kept in procedure call frames (for
 * local variables recognized by the compiler) or in the heap (for global
 * variables and any variable not known to the compiler). For each Var
 * structure in the heap, a hash table entry holds the variable name and a
 * pointer to the Var structure.
 */

typedef struct Var {
    int flags;			/* Miscellaneous bits of information about
				 * variable. See below for definitions. */
    union {
	Tcl_Obj *objPtr;	/* The variable's object value. Used for
				 * scalar variables and array elements. */
	TclVarHashTable *tablePtr;/* For array variables, this points to
				 * information about the hash table used to
				 * implement the associative array. Points to
				 * ckalloc-ed data. */
	struct Var *linkPtr;	/* If this is a global variable being referred
				 * to in a procedure, or a variable created by
				 * "upvar", this field points to the
				 * referenced variable's Var struct. */
    } value;
} Var;

typedef struct VarInHash {
    Var var;
    int refCount;		/* Counts number of active uses of this
				 * variable: 1 for the entry in the hash
				 * table, 1 for each additional variable whose
				 * linkPtr points here, 1 for each nested
				 * trace active on variable, and 1 if the
				 * variable is a namespace variable. This
				 * record can't be deleted until refCount
				 * becomes 0. */
    Tcl_HashEntry entry;	/* The hash table entry that refers to this
				 * variable. This is used to find the name of
				 * the variable and to delete it from its
				 * hashtable if it is no longer needed. It
				 * also holds the variable's name. */
} VarInHash;

/*
 * Flag bits for variables. The first two (VAR_ARRAY and VAR_LINK) are
 * mutually exclusive and give the "type" of the variable. If none is set,
 * this is a scalar variable.
 *
 * VAR_ARRAY -			1 means this is an array variable rather than
 *				a scalar variable or link. The "tablePtr"
 *				field points to the array's hashtable for its
 *				elements.
 * VAR_LINK -			1 means this Var structure contains a pointer
 *				to another Var structure that either has the
 *				real value or is itself another VAR_LINK
 *				pointer. Variables like this come about
 *				through "upvar" and "global" commands, or
 *				through references to variables in enclosing
 *				namespaces.
 *
 * Flags that indicate the type and status of storage; none is set for
 * compiled local variables (Var structs).
 *
 * VAR_IN_HASHTABLE -		1 means this variable is in a hashtable and
 *				the Var structure is malloced. 0 if it is a
 *				local variable that was assigned a slot in a
 *				procedure frame by the compiler so the Var
 *				storage is part of the call frame.
 * VAR_DEAD_HASH                1 means that this var's entry in the hashtable
 *                              has already been deleted.
 * VAR_ARRAY_ELEMENT -		1 means that this variable is an array
 *				element, so it is not legal for it to be an
 *				array itself (the VAR_ARRAY flag had better
 *				not be set).
 * VAR_NAMESPACE_VAR -		1 means that this variable was declared as a
 *				namespace variable. This flag ensures it
 *				persists until its namespace is destroyed or
 *				until the variable is unset; it will persist
 *				even if it has not been initialized and is
 *				marked undefined. The variable's refCount is
 *				incremented to reflect the "reference" from
 *				its namespace.
 *
 * Flag values relating to the variable's trace and search status.
 *
 * VAR_TRACED_READ
 * VAR_TRACED_WRITE
 * VAR_TRACED_UNSET
 * VAR_TRACED_ARRAY
 * VAR_TRACE_ACTIVE -		1 means that trace processing is currently
 *				underway for a read or write access, so new
 *				read or write accesses should not cause trace
 *				procedures to be called and the variable can't
 *				be deleted.
 * VAR_SEARCH_ACTIVE
 *
 * The following additional flags are used with the CompiledLocal type defined
 * below:
 *
 * VAR_ARGUMENT -		1 means that this variable holds a procedure
 *				argument.
 * VAR_TEMPORARY -		1 if the local variable is an anonymous
 *				temporary variable. Temporaries have a NULL
 *				name.
 * VAR_RESOLVED -		1 if name resolution has been done for this
 *				variable.
 * VAR_IS_ARGS                  1 if this variable is the last argument and is
 *                              named "args".
 */

/*
 * FLAGS RENUMBERED: everything breaks already, make things simpler.
 *
 * IMPORTANT: skip the values 0x10, 0x20, 0x40, 0x800 corresponding to
 * TCL_TRACE_(READS/WRITES/UNSETS/ARRAY): makes code simpler in tclTrace.c
 *
 * Keep the flag values for VAR_ARGUMENT and VAR_TEMPORARY so that old values
 * in precompiled scripts keep working.
 */


/* Type of value (0 is scalar) */
#define VAR_ARRAY		0x1
#define VAR_LINK		0x2

/* Type of storage (0 is compiled local) */
#define VAR_IN_HASHTABLE	0x4
#define VAR_DEAD_HASH           0x8
#define VAR_ARRAY_ELEMENT	0x1000
#define VAR_NAMESPACE_VAR	0x80      /* KEEP OLD VALUE for Itcl */

#define VAR_ALL_HASH (VAR_IN_HASHTABLE|VAR_DEAD_HASH|VAR_NAMESPACE_VAR|VAR_ARRAY_ELEMENT)

/* Trace and search state */

#define VAR_TRACED_READ        0x10       /* TCL_TRACE_READS  */
#define VAR_TRACED_WRITE       0x20       /* TCL_TRACE_WRITES */
#define VAR_TRACED_UNSET       0x40       /* TCL_TRACE_UNSETS */
#define VAR_TRACED_ARRAY       0x800      /* TCL_TRACE_ARRAY  */
#define VAR_TRACE_ACTIVE       0x2000
#define VAR_SEARCH_ACTIVE      0x4000
#define VAR_ALL_TRACES \
   (VAR_TRACED_READ|VAR_TRACED_WRITE|VAR_TRACED_ARRAY|VAR_TRACED_UNSET)


/* Special handling on initialisation (only CompiledLocal) */
#define VAR_ARGUMENT		0x100     /* KEEP OLD VALUE! See tclProc.c */
#define VAR_TEMPORARY		0x200     /* KEEP OLD VALUE! See tclProc.c */
#define VAR_IS_ARGS		0x400
#define VAR_RESOLVED		0x8000

/*
 * Macros to ensure that various flag bits are set properly for variables.
 * The ANSI C "prototypes" for these macros are:
 *
 * MODULE_SCOPE void	TclSetVarScalar(Var *varPtr);
 * MODULE_SCOPE void	TclSetVarArray(Var *varPtr);
 * MODULE_SCOPE void	TclSetVarLink(Var *varPtr);
 * MODULE_SCOPE void	TclSetVarArrayElement(Var *varPtr);
 * MODULE_SCOPE void	TclSetVarUndefined(Var *varPtr);
 * MODULE_SCOPE void	TclClearVarUndefined(Var *varPtr);
 */

#define TclSetVarScalar(varPtr) \
    (varPtr)->flags &= ~(VAR_ARRAY|VAR_LINK)

#define TclSetVarArray(varPtr) \
    (varPtr)->flags = ((varPtr)->flags & ~VAR_LINK) | VAR_ARRAY

#define TclSetVarLink(varPtr) \
    (varPtr)->flags = ((varPtr)->flags & ~VAR_ARRAY) | VAR_LINK

#define TclSetVarArrayElement(varPtr) \
    (varPtr)->flags = ((varPtr)->flags & ~VAR_ARRAY) | VAR_ARRAY_ELEMENT

#define TclSetVarUndefined(varPtr) \
    (varPtr)->flags &= ~(VAR_ARRAY|VAR_LINK);\
    (varPtr)->value.objPtr = NULL

#define TclClearVarUndefined(varPtr)

#define TclSetVarTraceActive(varPtr) \
    (varPtr)->flags |= VAR_TRACE_ACTIVE

#define TclClearVarTraceActive(varPtr) \
    (varPtr)->flags &= ~VAR_TRACE_ACTIVE

#define TclSetVarNamespaceVar(varPtr) \
    if (!TclIsVarNamespaceVar(varPtr)) {\
        (varPtr)->flags |= VAR_NAMESPACE_VAR;\
        ((VarInHash *)(varPtr))->refCount++;\
    } 

#define TclClearVarNamespaceVar(varPtr) \
    if (TclIsVarNamespaceVar(varPtr)) {\
        (varPtr)->flags &= ~VAR_NAMESPACE_VAR;\
        ((VarInHash *)(varPtr))->refCount--;\
    }

/*
 * Macros to read various flag bits of variables.
 * The ANSI C "prototypes" for these macros are:
 *
 * MODULE_SCOPE int	TclIsVarScalar(Var *varPtr);
 * MODULE_SCOPE int	TclIsVarLink(Var *varPtr);
 * MODULE_SCOPE int	TclIsVarArray(Var *varPtr);
 * MODULE_SCOPE int	TclIsVarUndefined(Var *varPtr);
 * MODULE_SCOPE int	TclIsVarArrayElement(Var *varPtr);
 * MODULE_SCOPE int	TclIsVarTemporary(Var *varPtr);
 * MODULE_SCOPE int	TclIsVarArgument(Var *varPtr);
 * MODULE_SCOPE int	TclIsVarResolved(Var *varPtr);
 */

#define TclIsVarScalar(varPtr) \
    !((varPtr)->flags & (VAR_ARRAY|VAR_LINK))

#define TclIsVarLink(varPtr) \
    ((varPtr)->flags & VAR_LINK)

#define TclIsVarArray(varPtr) \
    ((varPtr)->flags & VAR_ARRAY)

#define TclIsVarUndefined(varPtr) \
    ((varPtr)->value.objPtr == NULL)

#define TclIsVarArrayElement(varPtr) \
    ((varPtr)->flags & VAR_ARRAY_ELEMENT)

#define TclIsVarNamespaceVar(varPtr) \
    ((varPtr)->flags & VAR_NAMESPACE_VAR)

#define TclIsVarTemporary(varPtr) \
    ((varPtr)->flags & VAR_TEMPORARY)

#define TclIsVarArgument(varPtr) \
    ((varPtr)->flags & VAR_ARGUMENT)

#define TclIsVarResolved(varPtr) \
    ((varPtr)->flags & VAR_RESOLVED)

#define TclIsVarTraceActive(varPtr) \
    ((varPtr)->flags & VAR_TRACE_ACTIVE)

#define TclIsVarTraced(varPtr) \
   ((varPtr)->flags & VAR_ALL_TRACES)

#define TclIsVarInHash(varPtr) \
    ((varPtr)->flags & VAR_IN_HASHTABLE)

#define TclIsVarDeadHash(varPtr) \
    ((varPtr)->flags & VAR_DEAD_HASH)

#define TclGetVarNsPtr(varPtr) \
    (TclIsVarInHash(varPtr) \
         ? ((TclVarHashTable *) ((((VarInHash *) (varPtr))->entry.tablePtr)))->nsPtr \
	 : NULL)

#define VarHashRefCount(varPtr) \
    ((VarInHash *) (varPtr))->refCount

/*
 * Macros for direct variable access by TEBC
 */

#define TclIsVarDirectReadable(varPtr) \
    (   !((varPtr)->flags & (VAR_ARRAY|VAR_LINK|VAR_TRACED_READ)) \
    &&  (varPtr)->value.objPtr)

#define TclIsVarDirectWritable(varPtr) \
    !((varPtr)->flags & (VAR_ARRAY|VAR_LINK|VAR_TRACED_WRITE|VAR_DEAD_HASH))

#define TclIsVarDirectModifyable(varPtr) \
    (   !((varPtr)->flags & (VAR_ARRAY|VAR_LINK|VAR_TRACED_READ|VAR_TRACED_WRITE)) \
    &&  (varPtr)->value.objPtr)

#define TclIsVarDirectReadable2(varPtr, arrayPtr) \
    (TclIsVarDirectReadable(varPtr) &&\
        (!(arrayPtr) || !((arrayPtr)->flags & VAR_TRACED_READ)))

#define TclIsVarDirectWritable2(varPtr, arrayPtr) \
    (TclIsVarDirectWritable(varPtr) &&\
        (!(arrayPtr) || !((arrayPtr)->flags & VAR_TRACED_WRITE)))

#define TclIsVarDirectModifyable2(varPtr, arrayPtr) \
    (TclIsVarDirectModifyable(varPtr) &&\
        (!(arrayPtr) || !((arrayPtr)->flags & (VAR_TRACED_READ|VAR_TRACED_WRITE))))


/*
 *----------------------------------------------------------------
 * Data structures related to procedures. These are used primarily in
 * tclProc.c, tclCompile.c, and tclExecute.c.
 *----------------------------------------------------------------
 */

/*
 * Forward declaration to prevent an error when the forward reference to
 * Command is encountered in the Proc and ImportRef types declared below.
 */

struct Command;

/*
 * The variable-length structure below describes a local variable of a
 * procedure that was recognized by the compiler. These variables have a name,
 * an element in the array of compiler-assigned local variables in the
 * procedure's call frame, and various other items of information. If the
 * local variable is a formal argument, it may also have a default value. The
 * compiler can't recognize local variables whose names are expressions (these
 * names are only known at runtime when the expressions are evaluated) or
 * local variables that are created as a result of an "upvar" or "uplevel"
 * command. These other local variables are kept separately in a hash table in
 * the call frame.
 */

typedef struct CompiledLocal {
    struct CompiledLocal *nextPtr;
				/* Next compiler-recognized local variable for
				 * this procedure, or NULL if this is the last
				 * local. */
    int nameLength;		/* The number of characters in local
				 * variable's name. Used to speed up variable
				 * lookups. */
    int frameIndex;		/* Index in the array of compiler-assigned
				 * variables in the procedure call frame. */
    int flags;			/* Flag bits for the local variable. Same as
				 * the flags for the Var structure above,
				 * although only VAR_ARGUMENT, VAR_TEMPORARY,
				 * and VAR_RESOLVED make sense. */
    Tcl_Obj *defValuePtr;	/* Pointer to the default value of an
				 * argument, if any. NULL if not an argument
				 * or, if an argument, no default value. */
    Tcl_ResolvedVarInfo *resolveInfo;
				/* Customized variable resolution info
				 * supplied by the Tcl_ResolveCompiledVarProc
				 * associated with a namespace. Each variable
				 * is marked by a unique ClientData tag during
				 * compilation, and that same tag is used to
				 * find the variable at runtime. */
    char name[4];		/* Name of the local variable starts here. If
				 * the name is NULL, this will just be '\0'.
				 * The actual size of this field will be large
				 * enough to hold the name. MUST BE THE LAST
				 * FIELD IN THE STRUCTURE! */
} CompiledLocal;

/*
 * The structure below defines a command procedure, which consists of a
 * collection of Tcl commands plus information about arguments and other local
 * variables recognized at compile time.
 */

typedef struct Proc {
    struct Interp *iPtr;	/* Interpreter for which this command is
				 * defined. */
    int refCount;		/* Reference count: 1 if still present in
				 * command table plus 1 for each call to the
				 * procedure that is currently active. This
				 * structure can be freed when refCount
				 * becomes zero. */
    struct Command *cmdPtr;	/* Points to the Command structure for this
				 * procedure. This is used to get the
				 * namespace in which to execute the
				 * procedure. */
    Tcl_Obj *bodyPtr;		/* Points to the ByteCode object for
				 * procedure's body command. */
    int numArgs;		/* Number of formal parameters. */
    int numCompiledLocals;	/* Count of local variables recognized by the
				 * compiler including arguments and
				 * temporaries. */
    CompiledLocal *firstLocalPtr;
				/* Pointer to first of the procedure's
				 * compiler-allocated local variables, or NULL
				 * if none. The first numArgs entries in this
				 * list describe the procedure's formal
				 * arguments. */
    CompiledLocal *lastLocalPtr;/* Pointer to the last allocated local
				 * variable or NULL if none. This has frame
				 * index (numCompiledLocals-1). */
} Proc;

/*
 * The type of functions called to process errors found during the execution
 * of a procedure (or lambda term or ...).
 */

typedef void (*ProcErrorProc)(Tcl_Interp *interp, Tcl_Obj *procNameObj);

/*
 * The structure below defines a command trace. This is used to allow Tcl
 * clients to find out whenever a command is about to be executed.
 */

typedef struct Trace {
    int level;			/* Only trace commands at nesting level less
				 * than or equal to this. */
    Tcl_CmdObjTraceProc *proc;	/* Procedure to call to trace command. */
    ClientData clientData;	/* Arbitrary value to pass to proc. */
    struct Trace *nextPtr;	/* Next in list of traces for this interp. */
    int flags;			/* Flags governing the trace - see
				 * Tcl_CreateObjTrace for details */
    Tcl_CmdObjTraceDeleteProc* delProc;
				/* Procedure to call when trace is deleted */
} Trace;

/*
 * When an interpreter trace is active (i.e. its associated procedure is
 * executing), one of the following structures is linked into a list
 * associated with the interpreter. The information in the structure is needed
 * in order for Tcl to behave reasonably if traces are deleted while traces
 * are active.
 */

typedef struct ActiveInterpTrace {
    struct ActiveInterpTrace *nextPtr;
				/* Next in list of all active command traces
				 * for the interpreter, or NULL if no more. */
    Trace *nextTracePtr;	/* Next trace to check after current trace
				 * procedure returns; if this trace gets
				 * deleted, must update pointer to avoid using
				 * free'd memory. */
    int reverseScan;		/* Boolean set true when traces are scanning
				 * in reverse order. */
} ActiveInterpTrace;

/*
 * Flag values designating types of execution traces. See tclTrace.c for
 * related flag values.
 *
 * TCL_TRACE_ENTER_EXEC		- triggers enter/enterstep traces.
 * 				- passed to Tcl_CreateObjTrace to set up
 *				  "enterstep" traces.
 * TCL_TRACE_LEAVE_EXEC		- triggers leave/leavestep traces.
 * 				- passed to Tcl_CreateObjTrace to set up
 *				  "leavestep" traces.
 *
 */
#define TCL_TRACE_ENTER_EXEC	1
#define TCL_TRACE_LEAVE_EXEC	2

/*
 * The structure below defines an entry in the assocData hash table which is
 * associated with an interpreter. The entry contains a pointer to a function
 * to call when the interpreter is deleted, and a pointer to a user-defined
 * piece of data.
 */

typedef struct AssocData {
    Tcl_InterpDeleteProc *proc;	/* Proc to call when deleting. */
    ClientData clientData;	/* Value to pass to proc. */
} AssocData;

/*
 * The structure below defines a call frame. A call frame defines a naming
 * context for a procedure call: its local naming scope (for local variables)
 * and its global naming scope (a namespace, perhaps the global :: namespace).
 * A call frame can also define the naming context for a namespace eval or
 * namespace inscope command: the namespace in which the command's code should
 * execute. The Tcl_CallFrame structures exist only while procedures or
 * namespace eval/inscope's are being executed, and provide a kind of Tcl call
 * stack.
 *
 * WARNING!! The structure definition must be kept consistent with the
 * Tcl_CallFrame structure in tcl.h. If you change one, change the other.
 */

/*
 * Will be grown to contain: pointers to the varnames (allocated at the end),
 * plus the init values for each variable (suitable to be memcopied on init)
 */

typedef struct LocalCache {
    int refCount;
    int numVars;
    Tcl_Obj *varName0;
} LocalCache;

#define localName(framePtr, i) \
    ((&((framePtr)->localCachePtr->varName0))[(i)])

MODULE_SCOPE void TclFreeLocalCache(Tcl_Interp *interp, LocalCache *localCachePtr);

typedef struct CallFrame {
    Namespace *nsPtr;		/* Points to the namespace used to resolve
				 * commands and global variables. */
    int isProcCallFrame;	/* If 0, the frame was pushed to execute a
				 * namespace command and var references are
				 * treated as references to namespace vars;
				 * varTablePtr and compiledLocals are ignored.
				 * If FRAME_IS_PROC is set, the frame was
				 * pushed to execute a Tcl procedure and may
				 * have local vars. */
    int objc;			/* This and objv below describe the arguments
				 * for this procedure call. */
    Tcl_Obj *CONST *objv;	/* Array of argument objects. */
    struct CallFrame *callerPtr;
				/* Value of interp->framePtr when this
				 * procedure was invoked (i.e. next higher in
				 * stack of all active procedures). */
    struct CallFrame *callerVarPtr;
				/* Value of interp->varFramePtr when this
				 * procedure was invoked (i.e. determines
				 * variable scoping within caller). Same as
				 * callerPtr unless an "uplevel" command or
				 * something equivalent was active in the
				 * caller). */
    int level;			/* Level of this procedure, for "uplevel"
				 * purposes (i.e. corresponds to nesting of
				 * callerVarPtr's, not callerPtr's). 1 for
				 * outermost procedure, 0 for top-level. */
    Proc *procPtr;		/* Points to the structure defining the called
				 * procedure. Used to get information such as
				 * the number of compiled local variables
				 * (local variables assigned entries ["slots"]
				 * in the compiledLocals array below). */
    TclVarHashTable *varTablePtr;
                                /* Hash table containing local variables not
				 * recognized by the compiler, or created at
				 * execution time through, e.g., upvar.
				 * Initially NULL and created if needed. */
    int numCompiledLocals;	/* Count of local variables recognized by the
				 * compiler including arguments. */
    Var *compiledLocals;	/* Points to the array of local variables
				 * recognized by the compiler. The compiler
				 * emits code that refers to these variables
				 * using an index into this array. */
    ClientData clientData;	/* Pointer to some context that is used by
				 * object systems. The meaning of the contents
				 * of this field is defined by the code that
				 * sets it, and it should only ever be set by
				 * the code that is pushing the frame. In that
				 * case, the code that sets it should also
				 * have some means of discovering what the
				 * meaning of the value is, which we do not
				 * specify. */
    LocalCache *localCachePtr;
} CallFrame;

#define FRAME_IS_PROC   0x1
#define FRAME_IS_LAMBDA 0x2

/*
 * TIP #280
 * The structure below defines a command frame. A command frame provides
 * location information for all commands executing a tcl script (source, eval,
 * uplevel, procedure bodies, ...). The runtime structure essentially contains
 * the stack trace as it would be if the currently executing command were to
 * throw an error.
 *
 * For commands where it makes sense it refers to the associated CallFrame as
 * well.
 *
 * The structures are chained in a single list, with the top of the stack
 * anchored in the Interp structure.
 *
 * Instances can be allocated on the C stack, or the heap, the former making
 * cleanup a bit simpler.
 */

typedef struct CmdFrame {
    /* General data. Always available. */

    int type;			/* Values see below. */
    int level;			/* #Frames in stack, prevent O(n) scan of
				 * list. */
    int *line;			/* Lines the words of the command start on. */
    int nline;

    CallFrame *framePtr;	/* Procedure activation record, may be
				 * NULL. */
    struct CmdFrame *nextPtr;	/* Link to calling frame */

    /*
     * Data needed for Eval vs TEBC
     *
     * EXECUTION CONTEXTS and usage of CmdFrame
     *
     * Field      TEBC            EvalEx          EvalObjEx
     * =======    ====            ======          =========
     * level      yes             yes             yes
     * type       BC/PREBC        SRC/EVAL        EVAL_LIST
     * line0      yes             yes             yes
     * framePtr   yes             yes             yes
     * =======    ====            ======          =========
     *
     * =======    ====            ======          ========= union data
     * line1      -               yes             -
     * line3      -               yes             -
     * path       -               yes             -
     * -------    ----            ------          ---------
     * codePtr    yes             -               -
     * pc         yes             -               -
     * =======    ====            ======          =========
     *
     * =======    ====            ======          ========= | union cmd
     * listPtr    -               -               yes       |
     * -------    ----            ------          --------- |
     * cmd        yes             yes             -         |
     * cmdlen     yes             yes             -         |
     * -------    ----            ------          --------- |
     */

    union {
	struct {
	    Tcl_Obj *path;	/* Path of the sourced file the command is
				 * in. */
	} eval;
	struct {
	    CONST void *codePtr;/* Byte code currently executed */
	    CONST char *pc;	/* and instruction pointer.     */
	} tebc;
    } data;
    union {
	struct {
	    CONST char *cmd;	/* The executed command, if possible */
	    int len;		/* And its length */
	} str;
	Tcl_Obj *listPtr;	/* Tcl_EvalObjEx, cmd list */
    } cmd;
} CmdFrame;

/*
 * The following macros define the allowed values for the type field of the
 * CmdFrame structure above. Some of the values occur only in the extended
 * location data referenced via the 'baseLocPtr'.
 *
 * TCL_LOCATION_EVAL      : Frame is for a script evaluated by EvalEx.
 * TCL_LOCATION_EVAL_LIST : Frame is for a script evaluated by the list
 *                          optimization path of EvalObjEx.
 * TCL_LOCATION_BC        : Frame is for bytecode.
 * TCL_LOCATION_PREBC     : Frame is for precompiled bytecode.
 * TCL_LOCATION_SOURCE    : Frame is for a script evaluated by EvalEx, from a
 *                          sourced file.
 * TCL_LOCATION_PROC      : Frame is for bytecode of a procedure.
 *
 * A TCL_LOCATION_BC type in a frame can be overridden by _SOURCE and _PROC
 * types, per the context of the byte code in execution.
 */

#define TCL_LOCATION_EVAL      (0) /* Location in a dynamic eval script */
#define TCL_LOCATION_EVAL_LIST (1) /* Location in a dynamic eval script, list-path */
#define TCL_LOCATION_BC        (2) /* Location in byte code */
#define TCL_LOCATION_PREBC     (3) /* Location in precompiled byte code, no location */
#define TCL_LOCATION_SOURCE    (4) /* Location in a file */
#define TCL_LOCATION_PROC      (5) /* Location in a dynamic proc */

#define TCL_LOCATION_LAST      (6) /* Number of values in the enum */

/*
 * Structure passed to describe procedure-like "procedures" that are not
 * procedures (e.g. a lambda) so that their details can be reported correctly
 * by [info frame]. Contains a sub-structure for each extra field.
 */

typedef Tcl_Obj *(*GetFrameInfoValueProc)(ClientData clientData);
typedef struct {
    const char *name;		/* Name of this field. */
    GetFrameInfoValueProc proc;	/* Function to generate a Tcl_Obj* from the
				 * clientData, or just use the clientData
				 * directly (after casting) if NULL. */
    ClientData clientData;	/* Context for above function, or Tcl_Obj* if
				 * proc field is NULL. */
} ExtraFrameInfoField;
typedef struct {
    int length;			/* Length of array. */
    ExtraFrameInfoField fields[2];
				/* Really as long as necessary, but this is
				 * long enough for nearly anything. */
} ExtraFrameInfo;

/*
 *----------------------------------------------------------------
 * Data structures and procedures related to TclHandles, which are a very
 * lightweight method of preserving enough information to determine if an
 * arbitrary malloc'd block has been deleted.
 *----------------------------------------------------------------
 */

typedef void **TclHandle;

/*
 *----------------------------------------------------------------
 * Experimental flag value passed to Tcl_GetRegExpFromObj.
 * Intended for use only by Expect.
 * It will probably go away in a later release.
 *----------------------------------------------------------------
 */

#define TCL_REG_BOSONLY 002000	/* Prepend \A to pattern so it only matches at
				 * the beginning of the string. */

/*
 * These are a thin layer over TclpThreadKeyDataGet and TclpThreadKeyDataSet
 * when threads are used, or an emulation if there are no threads. These are
 * really internal and Tcl clients should use Tcl_GetThreadData.
 */

MODULE_SCOPE void *	TclThreadDataKeyGet(Tcl_ThreadDataKey *keyPtr);
MODULE_SCOPE void	TclThreadDataKeySet(Tcl_ThreadDataKey *keyPtr,
			    void *data);

/*
 * This is a convenience macro used to initialize a thread local storage ptr.
 */

#define TCL_TSD_INIT(keyPtr) \
  (ThreadSpecificData *)Tcl_GetThreadData((keyPtr), sizeof(ThreadSpecificData))


/*
 *----------------------------------------------------------------
 * Data structures related to bytecode compilation and execution. These are
 * used primarily in tclCompile.c, tclExecute.c, and tclBasic.c.
 *----------------------------------------------------------------
 */

/*
 * Forward declaration to prevent errors when the forward references to
 * Tcl_Parse and CompileEnv are encountered in the procedure type CompileProc
 * declared below.
 */

struct CompileEnv;

/*
 * The type of procedures called by the Tcl bytecode compiler to compile
 * commands. Pointers to these procedures are kept in the Command structure
 * describing each command. The integer value returned by a CompileProc must
 * be one of the following:
 *
 * TCL_OK		Compilation completed normally.
 * TCL_ERROR 		Compilation could not be completed. This can be just a
 * 			judgment by the CompileProc that the command is too
 * 			complex to compile effectively, or it can indicate
 * 			that in the current state of the interp, the command
 * 			would raise an error. The bytecode compiler will not
 * 			do any error reporting at compiler time. Error
 * 			reporting is deferred until the actual runtime,
 * 			because by then changes in the interp state may allow
 * 			the command to be successfully evaluated.
 * TCL_OUT_LINE_COMPILE	A source-compatible alias for TCL_ERROR, kept for the
 * 			sake of old code only.
 */

#define TCL_OUT_LINE_COMPILE	TCL_ERROR

typedef int (CompileProc) (Tcl_Interp *interp, Tcl_Parse *parsePtr,
	struct CompileEnv *compEnvPtr);

/*
 * The type of procedure called from the compilation hook point in
 * SetByteCodeFromAny.
 */

typedef int (CompileHookProc) (Tcl_Interp *interp,
	struct CompileEnv *compEnvPtr, ClientData clientData);

/*
 * The data structure for a (linked list of) execution stacks.
 */

typedef struct ExecStack {
    struct ExecStack *prevPtr;
    struct ExecStack *nextPtr;
    Tcl_Obj **markerPtr;
    Tcl_Obj **endPtr;
    Tcl_Obj **tosPtr;
    Tcl_Obj *stackWords[1];
} ExecStack;


/*
 * The data structure defining the execution environment for ByteCode's.
 * There is one ExecEnv structure per Tcl interpreter. It holds the evaluation
 * stack that holds command operands and results. The stack grows towards
 * increasing addresses. The member stackPtr points to the stackItems of the
 * currently active execution stack.
 */

typedef struct ExecEnv {
    ExecStack *execStackPtr;	/* Points to the first item in the evaluation
				 * stack on the heap. */
    Tcl_Obj *constants[2];	/* Pointers to constant "0" and "1" objs. */
} ExecEnv;

/*
 * The definitions for the LiteralTable and LiteralEntry structures. Each
 * interpreter contains a LiteralTable. It is used to reduce the storage
 * needed for all the Tcl objects that hold the literals of scripts compiled
 * by the interpreter. A literal's object is shared by all the ByteCodes that
 * refer to the literal. Each distinct literal has one LiteralEntry entry in
 * the LiteralTable. A literal table is a specialized hash table that is
 * indexed by the literal's string representation, which may contain null
 * characters.
 *
 * Note that we reduce the space needed for literals by sharing literal
 * objects both within a ByteCode (each ByteCode contains a local
 * LiteralTable) and across all an interpreter's ByteCodes (with the
 * interpreter's global LiteralTable).
 */

typedef struct LiteralEntry {
    struct LiteralEntry *nextPtr;
				/* Points to next entry in this hash bucket or
				 * NULL if end of chain. */
    Tcl_Obj *objPtr;		/* Points to Tcl object that holds the
				 * literal's bytes and length. */
    int refCount;		/* If in an interpreter's global literal
				 * table, the number of ByteCode structures
				 * that share the literal object; the literal
				 * entry can be freed when refCount drops to
				 * 0. If in a local literal table, -1. */
    Namespace *nsPtr;		/* Namespace in which this literal is used. We
				 * try to avoid sharing literal non-FQ command
				 * names among different namespaces to reduce
				 * shimmering. */
} LiteralEntry;

typedef struct LiteralTable {
    LiteralEntry **buckets;	/* Pointer to bucket array. Each element
				 * points to first entry in bucket's hash
				 * chain, or NULL. */
    LiteralEntry *staticBuckets[TCL_SMALL_HASH_TABLE];
				/* Bucket array used for small tables to avoid
				 * mallocs and frees. */
    int numBuckets;		/* Total number of buckets allocated at
				 * **buckets. */
    int numEntries;		/* Total number of entries present in
				 * table. */
    int rebuildSize;		/* Enlarge table when numEntries gets to be
				 * this large. */
    int mask;			/* Mask value used in hashing function. */
} LiteralTable;

/*
 * The following structure defines for each Tcl interpreter various
 * statistics-related information about the bytecode compiler and
 * interpreter's operation in that interpreter.
 */

#ifdef TCL_COMPILE_STATS
typedef struct ByteCodeStats {
    long numExecutions;		/* Number of ByteCodes executed. */
    long numCompilations;	/* Number of ByteCodes created. */
    long numByteCodesFreed;	/* Number of ByteCodes destroyed. */
    long instructionCount[256];	/* Number of times each instruction was
				 * executed. */

    double totalSrcBytes;	/* Total source bytes ever compiled. */
    double totalByteCodeBytes;	/* Total bytes for all ByteCodes. */
    double currentSrcBytes;	/* Src bytes for all current ByteCodes. */
    double currentByteCodeBytes;/* Code bytes in all current ByteCodes. */

    long srcCount[32];		/* Source size distribution: # of srcs of
				 * size [2**(n-1)..2**n), n in [0..32). */
    long byteCodeCount[32];	/* ByteCode size distribution. */
    long lifetimeCount[32];	/* ByteCode lifetime distribution (ms). */

    double currentInstBytes;	/* Instruction bytes-current ByteCodes. */
    double currentLitBytes;	/* Current literal bytes. */
    double currentExceptBytes;	/* Current exception table bytes. */
    double currentAuxBytes;	/* Current auxiliary information bytes. */
    double currentCmdMapBytes;	/* Current src<->code map bytes. */

    long numLiteralsCreated;	/* Total literal objects ever compiled. */
    double totalLitStringBytes;	/* Total string bytes in all literals. */
    double currentLitStringBytes;
				/* String bytes in current literals. */
    long literalCount[32];	/* Distribution of literal string sizes. */
} ByteCodeStats;
#endif /* TCL_COMPILE_STATS */

/*
 *----------------------------------------------------------------
 * Data structures related to commands.
 *----------------------------------------------------------------
 */

/*
 * An imported command is created in an namespace when it imports a "real"
 * command from another namespace. An imported command has a Command structure
 * that points (via its ClientData value) to the "real" Command structure in
 * the source namespace's command table. The real command records all the
 * imported commands that refer to it in a list of ImportRef structures so
 * that they can be deleted when the real command is deleted.
 */

typedef struct ImportRef {
    struct Command *importedCmdPtr;
				/* Points to the imported command created in
				 * an importing namespace; this command
				 * redirects its invocations to the "real"
				 * command. */
    struct ImportRef *nextPtr;	/* Next element on the linked list of imported
				 * commands that refer to the "real" command.
				 * The real command deletes these imported
				 * commands on this list when it is
				 * deleted. */
} ImportRef;

/*
 * Data structure used as the ClientData of imported commands: commands
 * created in an namespace when it imports a "real" command from another
 * namespace.
 */

typedef struct ImportedCmdData {
    struct Command *realCmdPtr;	/* "Real" command that this imported command
				 * refers to. */
    struct Command *selfPtr;	/* Pointer to this imported command. Needed
				 * only when deleting it in order to remove it
				 * from the real command's linked list of
				 * imported commands that refer to it. */
} ImportedCmdData;

/*
 * A Command structure exists for each command in a namespace. The Tcl_Command
 * opaque type actually refers to these structures.
 */

typedef struct Command {
    Tcl_HashEntry *hPtr;	/* Pointer to the hash table entry that refers
				 * to this command. The hash table is either a
				 * namespace's command table or an
				 * interpreter's hidden command table. This
				 * pointer is used to get a command's name
				 * from its Tcl_Command handle. NULL means
				 * that the hash table entry has been removed
				 * already (this can happen if deleteProc
				 * causes the command to be deleted or
				 * recreated). */
    Namespace *nsPtr;		/* Points to the namespace containing this
				 * command. */
    int refCount;		/* 1 if in command hashtable plus 1 for each
				 * reference from a CmdName Tcl object
				 * representing a command's name in a ByteCode
				 * instruction sequence. This structure can be
				 * freed when refCount becomes zero. */
    int cmdEpoch;		/* Incremented to invalidate any references
				 * that point to this command when it is
				 * renamed, deleted, hidden, or exposed. */
    CompileProc *compileProc;	/* Procedure called to compile command. NULL
				 * if no compile proc exists for command. */
    Tcl_ObjCmdProc *objProc;	/* Object-based command procedure. */
    ClientData objClientData;	/* Arbitrary value passed to object proc. */
    Tcl_CmdProc *proc;		/* String-based command procedure. */
    ClientData clientData;	/* Arbitrary value passed to string proc. */
    Tcl_CmdDeleteProc *deleteProc;
				/* Procedure invoked when deleting command to,
				 * e.g., free all client data. */
    ClientData deleteData;	/* Arbitrary value passed to deleteProc. */
    int flags;			/* Miscellaneous bits of information about
				 * command. See below for definitions. */
    ImportRef *importRefPtr;	/* List of each imported Command created in
				 * another namespace when this command is
				 * imported. These imported commands redirect
				 * invocations back to this command. The list
				 * is used to remove all those imported
				 * commands when deleting this "real"
				 * command. */
    CommandTrace *tracePtr;	/* First in list of all traces set for this
				 * command. */
} Command;

/*
 * Flag bits for commands.
 *
 * CMD_IS_DELETED -		Means that the command is in the process of
 *				being deleted (its deleteProc is currently
 *				executing). Other attempts to delete the
 *				command should be ignored.
 * CMD_TRACE_ACTIVE -		1 means that trace processing is currently
 *				underway for a rename/delete change. See the
 *				two flags below for which is currently being
 *				processed.
 * CMD_HAS_EXEC_TRACES -	1 means that this command has at least one
 *				execution trace (as opposed to simple
 *				delete/rename traces) in its tracePtr list.
 * TCL_TRACE_RENAME -		A rename trace is in progress. Further
 *				recursive renames will not be traced.
 * TCL_TRACE_DELETE -		A delete trace is in progress. Further
 *				recursive deletes will not be traced.
 * (these last two flags are defined in tcl.h)
 */

#define CMD_IS_DELETED		0x1
#define CMD_TRACE_ACTIVE	0x2
#define CMD_HAS_EXEC_TRACES	0x4

/*
 *----------------------------------------------------------------
 * Data structures related to name resolution procedures.
 *----------------------------------------------------------------
 */

/*
 * The interpreter keeps a linked list of name resolution schemes. The scheme
 * for a namespace is consulted first, followed by the list of schemes in an
 * interpreter, followed by the default name resolution in Tcl. Schemes are
 * added/removed from the interpreter's list by calling Tcl_AddInterpResolver
 * and Tcl_RemoveInterpResolver.
 */

typedef struct ResolverScheme {
    char *name;			/* Name identifying this scheme. */
    Tcl_ResolveCmdProc *cmdResProc;
				/* Procedure handling command name
				 * resolution. */
    Tcl_ResolveVarProc *varResProc;
				/* Procedure handling variable name resolution
				 * for variables that can only be handled at
				 * runtime. */
    Tcl_ResolveCompiledVarProc *compiledVarResProc;
				/* Procedure handling variable name resolution
				 * at compile time. */

    struct ResolverScheme *nextPtr;
				/* Pointer to next record in linked list. */
} ResolverScheme;

/*
 * Forward declaration of the TIP#143 limit handler structure.
 */

typedef struct LimitHandler LimitHandler;

/*
 * TIP #268.
 * Values for the selection mode, i.e the package require preferences.
 */

enum PkgPreferOptions {
    PKG_PREFER_LATEST, PKG_PREFER_STABLE
};

/*
 *----------------------------------------------------------------
 * This structure defines an interpreter, which is a collection of commands
 * plus other state information related to interpreting commands, such as
 * variable storage. Primary responsibility for this data structure is in
 * tclBasic.c, but almost every Tcl source file uses something in here.
 *----------------------------------------------------------------
 */

typedef struct Interp {
    /*
     * Note: the first three fields must match exactly the fields in a
     * Tcl_Interp struct (see tcl.h). If you change one, be sure to change the
     * other.
     *
     * The interpreter's result is held in both the string and the
     * objResultPtr fields. These fields hold, respectively, the result's
     * string or object value. The interpreter's result is always in the
     * result field if that is non-empty, otherwise it is in objResultPtr.
     * The two fields are kept consistent unless some C code sets
     * interp->result directly. Programs should not access result and
     * objResultPtr directly; instead, they should always get and set the
     * result using procedures such as Tcl_SetObjResult, Tcl_GetObjResult, and
     * Tcl_GetStringResult. See the SetResult man page for details.
     */

    char *result;		/* If the last command returned a string
				 * result, this points to it. Should not be
				 * accessed directly; see comment above. */
    Tcl_FreeProc *freeProc;	/* Zero means a string result is statically
				 * allocated. TCL_DYNAMIC means string result
				 * was allocated with ckalloc and should be
				 * freed with ckfree. Other values give
				 * address of procedure to invoke to free the
				 * string result. Tcl_Eval must free it before
				 * executing next command. */
    int errorLine;		/* When TCL_ERROR is returned, this gives the
				 * line number in the command where the error
				 * occurred (1 means first line). */
    struct TclStubs *stubTable;	/* Pointer to the exported Tcl stub table. On
				 * previous versions of Tcl this is a pointer
				 * to the objResultPtr or a pointer to a
				 * buckets array in a hash table. We therefore
				 * have to do some careful checking before we
				 * can use this. */

    TclHandle handle;		/* Handle used to keep track of when this
				 * interp is deleted. */

    Namespace *globalNsPtr;	/* The interpreter's global namespace. */
    Tcl_HashTable *hiddenCmdTablePtr;
				/* Hash table used by tclBasic.c to keep track
				 * of hidden commands on a per-interp
				 * basis. */
    ClientData interpInfo;	/* Information used by tclInterp.c to keep
				 * track of master/slave interps on a
				 * per-interp basis. */
    Tcl_HashTable unused2;	/* No longer used (was mathFuncTable) */

    /*
     * Information related to procedures and variables. See tclProc.c and
     * tclVar.c for usage.
     */

    int numLevels;		/* Keeps track of how many nested calls to
				 * Tcl_Eval are in progress for this
				 * interpreter. It's used to delay deletion of
				 * the table until all Tcl_Eval invocations
				 * are completed. */
    int maxNestingDepth;	/* If numLevels exceeds this value then Tcl
				 * assumes that infinite recursion has
				 * occurred and it generates an error. */
    CallFrame *framePtr;	/* Points to top-most in stack of all nested
				 * procedure invocations. */
    CallFrame *varFramePtr;	/* Points to the call frame whose variables
				 * are currently in use (same as framePtr
				 * unless an "uplevel" command is
				 * executing). */
    ActiveVarTrace *activeVarTracePtr;
				/* First in list of active traces for interp,
				 * or NULL if no active traces. */
    int returnCode;		/* [return -code] parameter */
    CallFrame *rootFramePtr;    /* Global frame pointer for this interpreter */
    Namespace *lookupNsPtr;	/* Namespace to use ONLY on the next
				 * TCL_EVAL_INVOKE call to Tcl_EvalObjv */

    /*
     * Information used by Tcl_AppendResult to keep track of partial results.
     * See Tcl_AppendResult code for details.
     */

    char *appendResult;		/* Storage space for results generated by
				 * Tcl_AppendResult. Ckalloc-ed. NULL means
				 * not yet allocated. */
    int appendAvl;		/* Total amount of space available at
				 * partialResult. */
    int appendUsed;		/* Number of non-null bytes currently stored
				 * at partialResult. */

    /*
     * Information about packages. Used only in tclPkg.c.
     */

    Tcl_HashTable packageTable;	/* Describes all of the packages loaded in or
				 * available to this interpreter. Keys are
				 * package names, values are (Package *)
				 * pointers. */
    char *packageUnknown;	/* Command to invoke during "package require"
				 * commands for packages that aren't described
				 * in packageTable. Ckalloc'ed, may be
				 * NULL. */
    /*
     * Miscellaneous information:
     */

    int cmdCount;		/* Total number of times a command procedure
				 * has been called for this interpreter. */
    int evalFlags;		/* Flags to control next call to Tcl_Eval.
				 * Normally zero, but may be set before
				 * calling Tcl_Eval. See below for valid
				 * values. */
    int unused1;		/* No longer used (was termOffset) */
    LiteralTable literalTable;	/* Contains LiteralEntry's describing all Tcl
				 * objects holding literals of scripts
				 * compiled by the interpreter. Indexed by the
				 * string representations of literals. Used to
				 * avoid creating duplicate objects. */
    int compileEpoch;		/* Holds the current "compilation epoch" for
				 * this interpreter. This is incremented to
				 * invalidate existing ByteCodes when, e.g., a
				 * command with a compile procedure is
				 * redefined. */
    Proc *compiledProcPtr;	/* If a procedure is being compiled, a pointer
				 * to its Proc structure; otherwise, this is
				 * NULL. Set by ObjInterpProc in tclProc.c and
				 * used by tclCompile.c to process local
				 * variables appropriately. */
    ResolverScheme *resolverPtr;
				/* Linked list of name resolution schemes
				 * added to this interpreter. Schemes are
				 * added and removed by calling
				 * Tcl_AddInterpResolvers and
				 * Tcl_RemoveInterpResolver respectively. */
    Tcl_Obj *scriptFile;	/* NULL means there is no nested source
				 * command active; otherwise this points to
				 * pathPtr of the file being sourced. */
    int flags;			/* Various flag bits. See below. */
    long randSeed;		/* Seed used for rand() function. */
    Trace *tracePtr;		/* List of traces for this interpreter. */
    Tcl_HashTable *assocData;	/* Hash table for associating data with this
				 * interpreter. Cleaned up when this
				 * interpreter is deleted. */
    struct ExecEnv *execEnvPtr;	/* Execution environment for Tcl bytecode
				 * execution. Contains a pointer to the Tcl
				 * evaluation stack. */
    Tcl_Obj *emptyObjPtr;	/* Points to an object holding an empty
				 * string. Returned by Tcl_ObjSetVar2 when
				 * variable traces change a variable in a
				 * gross way. */
    char resultSpace[TCL_RESULT_SIZE+1];
				/* Static space holding small results. */
    Tcl_Obj *objResultPtr;	/* If the last command returned an object
				 * result, this points to it. Should not be
				 * accessed directly; see comment above. */
    Tcl_ThreadId threadId;	/* ID of thread that owns the interpreter */

    ActiveCommandTrace *activeCmdTracePtr;
				/* First in list of active command traces for
				 * interp, or NULL if no active traces. */
    ActiveInterpTrace *activeInterpTracePtr;
				/* First in list of active traces for interp,
				 * or NULL if no active traces. */

    int tracesForbiddingInline; /* Count of traces (in the list headed by
				 * tracePtr) that forbid inline bytecode
				 * compilation */

    /* Fields used to manage extensible return options (TIP 90) */
    Tcl_Obj *returnOpts;	/* A dictionary holding the options to the
				 * last [return] command */

    Tcl_Obj *errorInfo;		/* errorInfo value (now as a Tcl_Obj) */
    Tcl_Obj *eiVar;		/* cached ref to ::errorInfo variable */
    Tcl_Obj *errorCode;		/* errorCode value (now as a Tcl_Obj) */
    Tcl_Obj *ecVar;		/* cached ref to ::errorInfo variable */
    int returnLevel;		/* [return -level] parameter */

    /*
     * Resource limiting framework support (TIP#143).
     */

    struct {
	int active;		/* Flag values defining which limits have been
				 * set. */
	int granularityTicker;	/* Counter used to determine how often to
				 * check the limits. */
	int exceeded;		/* Which limits have been exceeded, described
				 * as flag values the same as the 'active'
				 * field. */

	int cmdCount;		/* Limit for how many commands to execute in
				 * the interpreter. */
	LimitHandler *cmdHandlers;
				/* Handlers to execute when the limit is
				 * reached. */
	int cmdGranularity;	/* Mod factor used to determine how often to
				 * evaluate the limit check. */

	Tcl_Time time;		/* Time limit for execution within the
				 * interpreter. */
	LimitHandler *timeHandlers;
				/* Handlers to execute when the limit is
				 * reached. */
	int timeGranularity;	/* Mod factor used to determine how often to
				 * evaluate the limit check. */
	Tcl_TimerToken timeEvent;
				/* Handle for a timer callback that will occur
				 * when the time-limit is exceeded. */

	Tcl_HashTable callbacks;/* Mapping from (interp,type) pair to data
				 * used to install a limit handler callback to
				 * run in _this_ interp when the limit is
				 * exceeded. */
    } limit;

    /*
     * Information for improved default error generation from ensembles
     * (TIP#112).
     */

    struct {
	Tcl_Obj *CONST *sourceObjs;
				/* What arguments were actually input into the
				 * *root* ensemble command? (Nested ensembles
				 * don't rewrite this.) NULL if we're not
				 * processing an ensemble. */
	int numRemovedObjs;	/* How many arguments have been stripped off
				 * because of ensemble processing. */
	int numInsertedObjs;	/* How many of the current arguments were
				 * inserted by an ensemble. */
    } ensembleRewrite;

    /*
     * TIP #219 ... Global info for the I/O system ...
     */

    Tcl_Obj *chanMsg;		/* Error message set by channel drivers, for
				 * the propagation of arbitrary Tcl errors.
				 * This information, if present (chanMsg not
				 * NULL), takes precedence over a POSIX error
				 * code returned by a channel operation. */

    /* TIP #280 */
    CmdFrame* cmdFramePtr;      /* Points to the command frame containing
				 * the location information for the current
				 * command. */
    CONST CmdFrame* invokeCmdFramePtr; /* Points to the command frame which is the
				  * invoking context of the bytecode compiler.
				  * NULL when the byte code compiler is not
				  * active */
    int invokeWord;             /* Index of the word in the command which
				 * is getting compiled. */
    Tcl_HashTable* linePBodyPtr;
                                /* This table remembers for each
				 * statically defined procedure the
				 * location information for its
				 * body. It is keyed by the address of
				 * the Proc structure for a procedure.
				 */
    Tcl_HashTable* lineBCPtr;
                                /* This table remembers for each
				 * ByteCode object the location
				 * information for its body. It is
				 * keyed by the address of the Proc
				 * structure for a procedure.
				 */
    /*
     * TIP #268. The currently active selection mode, i.e. the package require
     * preferences.
     */

    int packagePrefer;          /* Current package selection mode. */

    /*
     * Hashtables for variable traces and searches
     */

    Tcl_HashTable varTraces;   /* Hashtable holding the start of a variable's
				 * active trace list; varPtr is the key. */
    Tcl_HashTable varSearches; /* Hashtable holding the start of a variable's
				 * active searches list; varPtr is the key */
    /*
     * The thread-specific data ekeko: cache pointers or values that
     *  (a) do not change during the thread's lifetime
     *  (b) require access to TSD to determine at runtime
     *  (c) are accessed very often (eg, at each command call)
     *
     * Note that these are the same for all interps in the same thread. They
     * just have to be initialised for the thread's master interp, slaves
     * inherit the value.
     *
     * They are used by the macros defined below.
     */

    void       *allocCache;
    void       *pendingObjDataPtr; /* Pointer to the Cache and PendingObjData
				    * structs for this interp's thread; see
				    * tclObj.c and tclThreadAlloc.c */ 
    int        *asyncReadyPtr;     /* Pointer to the asyncReady indicator for
				    * this interp's thread; see tclAsync.c */
    int        *stackBound;        /* Pointer to the limit stack address
				    * allowable for invoking a new command
				    * without "risking" a C-stack overflow;
				    * see TclpCheckStackSpace in the
				    * platform's directory. */


#ifdef TCL_COMPILE_STATS
    /*
     * Statistical information about the bytecode compiler and interpreter's
     * operation.
     */

    ByteCodeStats stats;	/* Holds compilation and execution statistics
				 * for this interpreter. */
#endif /* TCL_COMPILE_STATS */
} Interp;

/*
 * Macros that use the TSD-ekeko 
 */

#define TclAsyncReady(iPtr) \
    *((iPtr)->asyncReadyPtr)


/*
 * General list of interpreters. Doubly linked for easier removal of items
 * deep in the list.
 */

typedef struct InterpList {
    Interp *interpPtr;
    struct InterpList *prevPtr;
    struct InterpList *nextPtr;
} InterpList;

/*
 * Macros for splicing into and out of doubly linked lists. They assume
 * existence of struct items 'prevPtr' and 'nextPtr'.
 *
 * a = element to add or remove.
 * b = list head.
 *
 * TclSpliceIn adds to the head of the list.
 */

#define TclSpliceIn(a,b)			\
    (a)->nextPtr = (b);				\
    if ((b) != NULL) {				\
	(b)->prevPtr = (a);			\
    }						\
    (a)->prevPtr = NULL, (b) = (a);

#define TclSpliceOut(a,b)			\
    if ((a)->prevPtr != NULL) {			\
	(a)->prevPtr->nextPtr = (a)->nextPtr;	\
    } else {					\
	(b) = (a)->nextPtr;			\
    }						\
    if ((a)->nextPtr != NULL) {			\
	(a)->nextPtr->prevPtr = (a)->prevPtr;	\
    }

/*
 * EvalFlag bits for Interp structures:
 *
 * TCL_ALLOW_EXCEPTIONS	1 means it's OK for the script to terminate with a
 *			code other than TCL_OK or TCL_ERROR; 0 means codes
 *			other than these should be turned into errors.
 */

#define TCL_ALLOW_EXCEPTIONS	4
#define TCL_EVAL_FILE             2
#define TCL_EVAL_CTX              8

/*
 * Flag bits for Interp structures:
 *
 * DELETED:		Non-zero means the interpreter has been deleted:
 *			don't process any more commands for it, and destroy
 *			the structure as soon as all nested invocations of
 *			Tcl_Eval are done.
 * ERR_ALREADY_LOGGED:	Non-zero means information has already been logged in
 *			iPtr->errorInfo for the current Tcl_Eval instance, so
 *			Tcl_Eval needn't log it (used to implement the "error
 *			message log" command).
 * DONT_COMPILE_CMDS_INLINE: Non-zero means that the bytecode compiler should
 *			not compile any commands into an inline sequence of
 *			instructions. This is set 1, for example, when command
 *			traces are requested.
 * RAND_SEED_INITIALIZED: Non-zero means that the randSeed value of the interp
 *			has not be initialized. This is set 1 when we first
 *			use the rand() or srand() functions.
 * SAFE_INTERP:		Non zero means that the current interp is a safe
 *			interp (i.e. it has only the safe commands installed,
 *			less priviledge than a regular interp).
 * INTERP_TRACE_IN_PROGRESS: Non-zero means that an interp trace is currently
 *			active; so no further trace callbacks should be
 *			invoked.
 * INTERP_ALTERNATE_WRONG_ARGS: Used for listing second and subsequent forms
 *			of the wrong-num-args string in Tcl_WrongNumArgs.
 *			Makes it append instead of replacing and uses
 *			different intermediate text.
 *
 * WARNING: For the sake of some extensions that have made use of former
 * internal values, do not re-use the flag values 2 (formerly ERR_IN_PROGRESS)
 * or 8 (formerly ERROR_CODE_SET).
 */

#define DELETED				    1
#define ERR_ALREADY_LOGGED		    4
#define DONT_COMPILE_CMDS_INLINE	 0x20
#define RAND_SEED_INITIALIZED		 0x40
#define SAFE_INTERP			 0x80
#define INTERP_TRACE_IN_PROGRESS	0x200
#define INTERP_ALTERNATE_WRONG_ARGS	0x400
#define ERR_LEGACY_COPY			0x800

/*
 * Maximum number of levels of nesting permitted in Tcl commands (used to
 * catch infinite recursion).
 */

#define MAX_NESTING_DEPTH	1000

/*
 * TIP#143 limit handler internal representation.
 */

struct LimitHandler {
    int flags;			/* The state of this particular handler. */
    Tcl_LimitHandlerProc *handlerProc;
				/* The handler callback. */
    ClientData clientData;	/* Opaque argument to the handler callback. */
    Tcl_LimitHandlerDeleteProc *deleteProc;
				/* How to delete the clientData */
    LimitHandler *prevPtr;	/* Previous item in linked list of handlers */
    LimitHandler *nextPtr;	/* Next item in linked list of handlers */
};

/*
 * Values for the LimitHandler flags field.
 *	LIMIT_HANDLER_ACTIVE - Whether the handler is currently being
 *		processed; handlers are never to be entered reentrantly.
 *	LIMIT_HANDLER_DELETED - Whether the handler has been deleted. This
 *		should not normally be observed because when a handler is
 *		deleted it is also spliced out of the list of handlers, but
 *		even so we will be careful.
 */

#define LIMIT_HANDLER_ACTIVE	0x01
#define LIMIT_HANDLER_DELETED	0x02

/*
 * The macro below is used to modify a "char" value (e.g. by casting it to an
 * unsigned character) so that it can be used safely with macros such as
 * isspace.
 */

#define UCHAR(c) ((unsigned char) (c))

/*
 * This macro is used to determine the offset needed to safely allocate any
 * data structure in memory. Given a starting offset or size, it "rounds up"
 * or "aligns" the offset to the next 8-byte boundary so that any data
 * structure can be placed at the resulting offset without fear of an
 * alignment error.
 *
 * WARNING!! DO NOT USE THIS MACRO TO ALIGN POINTERS: it will produce the
 * wrong result on platforms that allocate addresses that are divisible by 4
 * or 2. Only use it for offsets or sizes.
 *
 * This macro is only used by tclCompile.c in the core (Bug 926445). It
 * however not be made file static, as extensions that touch bytecodes
 * (notably tbcload) require it.
 */

#define TCL_ALIGN(x) (((int)(x) + 7) & ~7)


/*
 * The following enum values are used to specify the runtime platform setting
 * of the tclPlatform variable.
 */

typedef enum {
    TCL_PLATFORM_UNIX = 0,	/* Any Unix-like OS. */
    TCL_PLATFORM_WINDOWS = 2	/* Any Microsoft Windows OS. */
} TclPlatformType;

/*
 * The following enum values are used to indicate the translation of a Tcl
 * channel. Declared here so that each platform can define
 * TCL_PLATFORM_TRANSLATION to the native translation on that platform
 */

typedef enum TclEolTranslation {
    TCL_TRANSLATE_AUTO,		/* Eol == \r, \n and \r\n. */
    TCL_TRANSLATE_CR,		/* Eol == \r. */
    TCL_TRANSLATE_LF,		/* Eol == \n. */
    TCL_TRANSLATE_CRLF		/* Eol == \r\n. */
} TclEolTranslation;

/*
 * Flags for TclInvoke:
 *
 * TCL_INVOKE_HIDDEN		Invoke a hidden command; if not set, invokes
 *				an exposed command.
 * TCL_INVOKE_NO_UNKNOWN	If set, "unknown" is not invoked if the
 *				command to be invoked is not found. Only has
 *				an effect if invoking an exposed command,
 *				i.e. if TCL_INVOKE_HIDDEN is not also set.
 * TCL_INVOKE_NO_TRACEBACK	Does not record traceback information if the
 *				invoked command returns an error. Used if the
 *				caller plans on recording its own traceback
 *				information.
 */

#define	TCL_INVOKE_HIDDEN	(1<<0)
#define TCL_INVOKE_NO_UNKNOWN	(1<<1)
#define TCL_INVOKE_NO_TRACEBACK	(1<<2)

/*
 * The structure used as the internal representation of Tcl list objects. This
 * struct is grown (reallocated and copied) as necessary to hold all the
 * list's element pointers. The struct might contain more slots than currently
 * used to hold all element pointers. This is done to make append operations
 * faster.
 */

typedef struct List {
    int refCount;
    int maxElemCount;		/* Total number of element array slots. */
    int elemCount;		/* Current number of list elements. */
    int canonicalFlag;		/* Set if the string representation was
				 * derived from the list representation. May
				 * be ignored if there is no string rep at
				 * all.*/
    Tcl_Obj *elements;		/* First list element; the struct is grown to
				 * accomodate all elements. */
} List;

/*
 * Macro used to get the elements of a list object.
 */

#define ListRepPtr(listPtr) \
    ((List *) (listPtr)->internalRep.twoPtrValue.ptr1)

#define ListObjGetElements(listPtr, objc, objv) \
    ((objv) = &(ListRepPtr(listPtr)->elements), \
     (objc) = ListRepPtr(listPtr)->elemCount)

#define ListObjLength(listPtr, len) \
    ((len) = ListRepPtr(listPtr)->elemCount)

#define TclListObjGetElements(interp, listPtr, objcPtr, objvPtr) \
    (((listPtr)->typePtr == &tclListType) \
	    ? ((ListObjGetElements((listPtr), *(objcPtr), *(objvPtr))), TCL_OK)\
	    : Tcl_ListObjGetElements((interp), (listPtr), (objcPtr), (objvPtr)))

#define TclListObjLength(interp, listPtr, lenPtr) \
    (((listPtr)->typePtr == &tclListType) \
	    ? ((ListObjLength((listPtr), *(lenPtr))), TCL_OK)\
	    : Tcl_ListObjLength((interp), (listPtr), (lenPtr)))

/*
 * Macros providing a faster path to integers: Tcl_GetLongFromObj everywhere,
 * Tcl_GetIntFromObj and TclGetIntForIndex on platforms where longs are ints.
 *
 * WARNING: these macros eval their args more than once.
 */

#define TclGetLongFromObj(interp, objPtr, longPtr) \
    (((objPtr)->typePtr == &tclIntType)	\
	    ? ((*(longPtr) = (long) (objPtr)->internalRep.otherValuePtr), TCL_OK) \
	    : Tcl_GetLongFromObj((interp), (objPtr), (longPtr)))

#if (LONG_MAX == INT_MAX)
#define TclGetIntFromObj(interp, objPtr, intPtr) \
    (((objPtr)->typePtr == &tclIntType)	\
	    ? ((*(intPtr) = (long) (objPtr)->internalRep.otherValuePtr), TCL_OK) \
	    : Tcl_GetIntFromObj((interp), (objPtr), (intPtr)))
#define TclGetIntForIndexM(interp, objPtr, endValue, idxPtr) \
    (((objPtr)->typePtr == &tclIntType)	\
	    ? ((*(idxPtr) = (long) (objPtr)->internalRep.otherValuePtr), TCL_OK) \
	    : TclGetIntForIndex((interp), (objPtr), (endValue), (idxPtr)))
#else
#define TclGetIntFromObj(interp, objPtr, intPtr) \
    Tcl_GetIntFromObj((interp), (objPtr), (intPtr))
#define TclGetIntForIndexM(interp, objPtr, ignore, idxPtr)	\
    TclGetIntForIndex(interp, objPtr, ignore, idxPtr)
#endif

/*
 * Flag values for TclTraceDictPath().
 *
 * DICT_PATH_READ indicates that all entries on the path must exist but no
 * updates will be needed.
 *
 * DICT_PATH_UPDATE indicates that we are going to be doing an update at the
 * tip of the path, so duplication of shared objects should be done along the
 * way.
 *
 * DICT_PATH_EXISTS indicates that we are performing an existance test and a
 * lookup failure should therefore not be an error. If (and only if) this flag
 * is set, TclTraceDictPath() will return the special value
 * DICT_PATH_NON_EXISTENT if the path is not traceable.
 *
 * DICT_PATH_CREATE (which also requires the DICT_PATH_UPDATE bit to be set)
 * indicates that we are to create non-existant dictionaries on the path.
 */

#define DICT_PATH_READ		0
#define DICT_PATH_UPDATE	1
#define DICT_PATH_EXISTS	2
#define DICT_PATH_CREATE	5

#define DICT_PATH_NON_EXISTENT	((Tcl_Obj *) (void *) 1)

/*
 *----------------------------------------------------------------
 * Data structures related to the filesystem internals
 *----------------------------------------------------------------
 */

/*
 * The version_2 filesystem is private to Tcl. As and when these changes have
 * been thoroughly tested and investigated a new public filesystem interface
 * will be released. The aim is more versatile virtual filesystem interfaces,
 * more efficiency in 'path' manipulation and usage, and cleaner filesystem
 * code internally.
 */

#define TCL_FILESYSTEM_VERSION_2	((Tcl_FSVersion) 0x2)
typedef ClientData (TclFSGetCwdProc2) (ClientData clientData);

/*
 * The following types are used for getting and storing platform-specific file
 * attributes in tclFCmd.c and the various platform-versions of that file.
 * This is done to have as much common code as possible in the file attributes
 * code. For more information about the callbacks, see TclFileAttrsCmd in
 * tclFCmd.c.
 */

typedef int (TclGetFileAttrProc) (Tcl_Interp *interp, int objIndex,
	Tcl_Obj *fileName, Tcl_Obj **attrObjPtrPtr);
typedef int (TclSetFileAttrProc) (Tcl_Interp *interp, int objIndex,
	Tcl_Obj *fileName, Tcl_Obj *attrObjPtr);

typedef struct TclFileAttrProcs {
    TclGetFileAttrProc *getProc;/* The procedure for getting attrs. */
    TclSetFileAttrProc *setProc;/* The procedure for setting attrs. */
} TclFileAttrProcs;

/*
 * Opaque handle used in pipeline routines to encapsulate platform-dependent
 * state.
 */

typedef struct TclFile_ *TclFile;

/*
 * The "globParameters" argument of the function TclGlob is an or'ed
 * combination of the following values:
 */

#define TCL_GLOBMODE_NO_COMPLAIN	1
#define TCL_GLOBMODE_JOIN		2
#define TCL_GLOBMODE_DIR		4
#define TCL_GLOBMODE_TAILS		8

typedef enum Tcl_PathPart {
    TCL_PATH_DIRNAME,
    TCL_PATH_TAIL,
    TCL_PATH_EXTENSION,
    TCL_PATH_ROOT
} Tcl_PathPart;

/*
 *----------------------------------------------------------------
 * Data structures related to obsolete filesystem hooks
 *----------------------------------------------------------------
 */

typedef int (TclStatProc_) (CONST char *path, struct stat *buf);
typedef int (TclAccessProc_) (CONST char *path, int mode);
typedef Tcl_Channel (TclOpenFileChannelProc_) (Tcl_Interp *interp,
	CONST char *fileName, CONST char *modeString, int permissions);

/*
 *----------------------------------------------------------------
 * Data structures related to procedures
 *----------------------------------------------------------------
 */

typedef Tcl_CmdProc *TclCmdProcType;
typedef Tcl_ObjCmdProc *TclObjCmdProcType;

/*
 *----------------------------------------------------------------
 * Data structures for process-global values.
 *----------------------------------------------------------------
 */

typedef void (TclInitProcessGlobalValueProc) (char **valuePtr, int *lengthPtr,
	Tcl_Encoding *encodingPtr);

/*
 * A ProcessGlobalValue struct exists for each internal value in Tcl that is
 * to be shared among several threads. Each thread sees a (Tcl_Obj) copy of
 * the value, and the master is kept as a counted string, with epoch and mutex
 * control. Each ProcessGlobalValue struct should be a static variable in some
 * file.
 */

typedef struct ProcessGlobalValue {
    int epoch;			/* Epoch counter to detect changes in the
				 * master value. */
    int numBytes;		/* Length of the master string. */
    char *value;		/* The master string value. */
    Tcl_Encoding encoding;	/* system encoding when master string was
				 * initialized. */
    TclInitProcessGlobalValueProc *proc;
    				/* A procedure to initialize the master string
				 * copy when a "get" request comes in before
				 * any "set" request has been received. */
    Tcl_Mutex mutex;		/* Enforce orderly access from multiple
				 * threads. */
    Tcl_ThreadDataKey key;	/* Key for per-thread data holding the
				 * (Tcl_Obj) copy for each thread. */
} ProcessGlobalValue;

/*
 *----------------------------------------------------------------------
 * Flags for TclParseNumber
 *----------------------------------------------------------------------
 */

#define TCL_PARSE_DECIMAL_ONLY		1
				/* Leading zero doesn't denote octal or hex */
#define TCL_PARSE_OCTAL_ONLY		2
				/* Parse octal even without prefix */
#define TCL_PARSE_HEXADECIMAL_ONLY	4
				/* Parse hexadecimal even without prefix */
#define TCL_PARSE_INTEGER_ONLY		8
				/* Disable floating point parsing */
#define TCL_PARSE_SCAN_PREFIXES		16
				/* Use [scan] rules dealing with 0? prefixes */
#define TCL_PARSE_NO_WHITESPACE		32
				/* Reject leading/trailing whitespace */

/*
 *----------------------------------------------------------------------
 * Type values TclGetNumberFromObj
 *----------------------------------------------------------------------
 */

#define TCL_NUMBER_LONG		1
#define TCL_NUMBER_WIDE		2
#define TCL_NUMBER_BIG		3
#define TCL_NUMBER_DOUBLE	4
#define TCL_NUMBER_NAN		5

/*
 *----------------------------------------------------------------
 * Variables shared among Tcl modules but not used by the outside world.
 *----------------------------------------------------------------
 */

MODULE_SCOPE char *	tclNativeExecutableName;
MODULE_SCOPE int	tclFindExecutableSearchDone;
MODULE_SCOPE char *	tclMemDumpFileName;
MODULE_SCOPE TclPlatformType tclPlatform;
MODULE_SCOPE Tcl_NotifierProcs tclOriginalNotifier;

/*
 * TIP #233 (Virtualized Time)
 * Data for the time hooks, if any.
 */

MODULE_SCOPE Tcl_GetTimeProc*   tclGetTimeProcPtr;
MODULE_SCOPE Tcl_ScaleTimeProc* tclScaleTimeProcPtr;
MODULE_SCOPE ClientData		tclTimeClientData;

/*
 * Variables denoting the Tcl object types defined in the core.
 */

MODULE_SCOPE Tcl_ObjType tclBignumType;
MODULE_SCOPE Tcl_ObjType tclBooleanType;
MODULE_SCOPE Tcl_ObjType tclByteArrayType;
MODULE_SCOPE Tcl_ObjType tclByteCodeType;
MODULE_SCOPE Tcl_ObjType tclDoubleType;
MODULE_SCOPE Tcl_ObjType tclEndOffsetType;
MODULE_SCOPE Tcl_ObjType tclIntType;
MODULE_SCOPE Tcl_ObjType tclListType;
MODULE_SCOPE Tcl_ObjType tclDictType;
MODULE_SCOPE Tcl_ObjType tclProcBodyType;
MODULE_SCOPE Tcl_ObjType tclStringType;
MODULE_SCOPE Tcl_ObjType tclArraySearchType;
MODULE_SCOPE Tcl_ObjType tclEnsembleCmdType;
#ifndef NO_WIDE_TYPE
MODULE_SCOPE Tcl_ObjType tclWideIntType;
#endif
MODULE_SCOPE Tcl_ObjType tclRegexpType;

/*
 * Variables denoting the hash key types defined in the core.
 */

MODULE_SCOPE Tcl_HashKeyType tclArrayHashKeyType;
MODULE_SCOPE Tcl_HashKeyType tclOneWordHashKeyType;
MODULE_SCOPE Tcl_HashKeyType tclStringHashKeyType;
MODULE_SCOPE Tcl_HashKeyType tclObjHashKeyType;

/*
 * The head of the list of free Tcl objects, and the total number of Tcl
 * objects ever allocated and freed.
 */

MODULE_SCOPE Tcl_Obj *	tclFreeObjList;

#ifdef TCL_COMPILE_STATS
MODULE_SCOPE long	tclObjsAlloced;
MODULE_SCOPE long	tclObjsFreed;
#define TCL_MAX_SHARED_OBJ_STATS 5
MODULE_SCOPE long	tclObjsShared[TCL_MAX_SHARED_OBJ_STATS];
#endif /* TCL_COMPILE_STATS */

/*
 * Pointer to a heap-allocated string of length zero that the Tcl core uses as
 * the value of an empty string representation for an object. This value is
 * shared by all new objects allocated by Tcl_NewObj.
 */

MODULE_SCOPE char *	tclEmptyStringRep;
MODULE_SCOPE char	tclEmptyString;

/*
 *----------------------------------------------------------------
 * Procedures shared among Tcl modules but not used by the outside world:
 *----------------------------------------------------------------
 */

MODULE_SCOPE void       TclAdvanceLines(int* line, CONST char* start,
			    CONST char* end);
MODULE_SCOPE int	TclArraySet(Tcl_Interp *interp,
			    Tcl_Obj *arrayNameObj, Tcl_Obj *arrayElemObj);
MODULE_SCOPE double	TclBignumToDouble(mp_int *bignum);
MODULE_SCOPE double	TclCeil(mp_int *a);
MODULE_SCOPE int	TclCheckBadOctal(Tcl_Interp *interp,CONST char *value);
MODULE_SCOPE int	TclChanCreateObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclChanPostEventObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclChanCaughtErrorBypass(Tcl_Interp *interp,
			    Tcl_Channel chan);
MODULE_SCOPE void	TclCleanupLiteralTable(Tcl_Interp *interp,
			    LiteralTable *tablePtr);
MODULE_SCOPE int	TclDoubleDigits(char *buf, double value, int *signum);
MODULE_SCOPE void       TclDeleteNamespaceVars(Namespace *nsPtr);
/* TIP #280 - Modified token based evulation, with line information */
MODULE_SCOPE int        TclEvalEx (Tcl_Interp *interp, CONST char *script,
				   int numBytes, int flags, int line);
MODULE_SCOPE void	TclExpandTokenArray(Tcl_Parse *parsePtr);
MODULE_SCOPE int	TclFileAttrsCmd(Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclFileCopyCmd(Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclFileDeleteCmd(Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclFileMakeDirsCmd(Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclFileRenameCmd(Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE void	TclFinalizeAllocSubsystem(void);
MODULE_SCOPE void	TclFinalizeAsync(void);
MODULE_SCOPE void	TclFinalizeDoubleConversion(void);
MODULE_SCOPE void	TclFinalizeEncodingSubsystem(void);
MODULE_SCOPE void	TclFinalizeEnvironment(void);
MODULE_SCOPE void	TclFinalizeExecution(void);
MODULE_SCOPE void	TclFinalizeIOSubsystem(void);
MODULE_SCOPE void	TclFinalizeFilesystem(void);
MODULE_SCOPE void	TclResetFilesystem(void);
MODULE_SCOPE void	TclFinalizeLoad(void);
MODULE_SCOPE void	TclFinalizeLock(void);
MODULE_SCOPE void	TclFinalizeMemorySubsystem(void);
MODULE_SCOPE void	TclFinalizeNotifier(void);
MODULE_SCOPE void	TclFinalizeObjects(void);
MODULE_SCOPE void	TclFinalizePreserve(void);
MODULE_SCOPE void	TclFinalizeSynchronization(void);
MODULE_SCOPE void	TclFinalizeThreadAlloc(void);
MODULE_SCOPE void	TclFinalizeThreadData(void);
MODULE_SCOPE double	TclFloor(mp_int *a);
MODULE_SCOPE void	TclFormatNaN(double value, char *buffer);
MODULE_SCOPE int	TclFSFileAttrIndex(Tcl_Obj *pathPtr,
			    CONST char *attributeName, int *indexPtr);
MODULE_SCOPE int *      TclGetAsyncReadyPtr(void);
MODULE_SCOPE Tcl_Obj *	TclGetBgErrorHandler(Tcl_Interp *interp);
MODULE_SCOPE int	TclGetNumberFromObj(Tcl_Interp *interp,
			    Tcl_Obj *objPtr, ClientData *clientDataPtr,
			    int *typePtr);
MODULE_SCOPE int	TclGetOpenModeEx(Tcl_Interp *interp,
			    CONST char *modeString, int *seekFlagPtr,
			    int *binaryPtr);
MODULE_SCOPE Tcl_Obj *	TclGetProcessGlobalValue(ProcessGlobalValue *pgvPtr);
MODULE_SCOPE const char *TclGetSrcInfoForCmd(Interp *iPtr, int *lenPtr);
MODULE_SCOPE int	TclGlob(Tcl_Interp *interp, char *pattern,
			    Tcl_Obj *unquotedPrefix, int globFlags,
			    Tcl_GlobTypeData *types);
MODULE_SCOPE int	TclIncrObj(Tcl_Interp *interp, Tcl_Obj *valuePtr,
			    Tcl_Obj *incrPtr);
MODULE_SCOPE Tcl_Obj *	TclIncrObjVar2(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
			    Tcl_Obj *part2Ptr, Tcl_Obj *incrPtr, int flags);
MODULE_SCOPE Tcl_Obj *	TclInfoFrame(Tcl_Interp *interp, CmdFrame *framePtr);
MODULE_SCOPE int	TclInfoGlobalsCmd(ClientData dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclInfoLocalsCmd(ClientData dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclInfoVarsCmd(ClientData dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE void	TclInitAlloc(void);
MODULE_SCOPE void	TclInitDbCkalloc(void);
MODULE_SCOPE void	TclInitDoubleConversion(void);
MODULE_SCOPE void	TclInitEmbeddedConfigurationInformation(
			    Tcl_Interp *interp);
MODULE_SCOPE void	TclInitEncodingSubsystem(void);
MODULE_SCOPE void	TclInitIOSubsystem(void);
MODULE_SCOPE void	TclInitLimitSupport(Tcl_Interp *interp);
MODULE_SCOPE void	TclInitNamespaceSubsystem(void);
MODULE_SCOPE void	TclInitNotifier(void);
MODULE_SCOPE void	TclInitObjSubsystem(void);
MODULE_SCOPE void	TclInitSubsystems(void);
MODULE_SCOPE int	TclInterpReady(Tcl_Interp *interp);
MODULE_SCOPE int	TclIsLocalScalar(CONST char *src, int len);
MODULE_SCOPE int	TclJoinThread(Tcl_ThreadId id, int *result);
MODULE_SCOPE void	TclLimitRemoveAllHandlers(Tcl_Interp *interp);
MODULE_SCOPE Tcl_Obj *	TclLindexList(Tcl_Interp *interp,
			    Tcl_Obj *listPtr, Tcl_Obj *argPtr);
MODULE_SCOPE Tcl_Obj *	TclLindexFlat(Tcl_Interp *interp, Tcl_Obj *listPtr,
			    int indexCount, Tcl_Obj *CONST indexArray[]);
/* TIP #280 */
MODULE_SCOPE void       TclListLines (CONST char* listStr, int line,
				      int n, int* lines);
MODULE_SCOPE Tcl_Obj *	TclListObjCopy(Tcl_Interp *interp, Tcl_Obj *listPtr);
MODULE_SCOPE int	TclLoadFile(Tcl_Interp *interp, Tcl_Obj *pathPtr,
			    int symc, CONST char *symbols[],
			    Tcl_PackageInitProc **procPtrs[],
			    Tcl_LoadHandle *handlePtr,
			    ClientData *clientDataPtr,
			    Tcl_FSUnloadFileProc **unloadProcPtr);
MODULE_SCOPE Tcl_Obj *	TclLsetList(Tcl_Interp *interp, Tcl_Obj *listPtr,
			    Tcl_Obj *indexPtr, Tcl_Obj *valuePtr);
MODULE_SCOPE Tcl_Obj *	TclLsetFlat(Tcl_Interp *interp, Tcl_Obj *listPtr,
			    int indexCount, Tcl_Obj *CONST indexArray[],
			    Tcl_Obj *valuePtr);
MODULE_SCOPE int        TclMarkList (Tcl_Interp *interp, CONST char *list,
				     CONST char* end, int *argcPtr,
				     CONST int** argszPtr, CONST char ***argvPtr);
MODULE_SCOPE int	TclMergeReturnOptions(Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[], Tcl_Obj **optionsPtrPtr,
			    int *codePtr, int *levelPtr);
MODULE_SCOPE int	TclNokia770Doubles();
MODULE_SCOPE void       TclObjVarErrMsg(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
	                    Tcl_Obj *part2Ptr, const char *operation,
	                    const char *reason, int index);
MODULE_SCOPE int	TclObjInvokeNamespace(Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[],
			    Tcl_Namespace *nsPtr, int flags);
MODULE_SCOPE int	TclObjUnsetVar2(Tcl_Interp *interp,
			    Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, int flags);
MODULE_SCOPE int	TclParseBackslash(CONST char *src,
			    int numBytes, int *readPtr, char *dst);
MODULE_SCOPE int	TclParseHex(CONST char *src, int numBytes,
			    Tcl_UniChar *resultPtr);
MODULE_SCOPE int	TclParseNumber(Tcl_Interp *interp, Tcl_Obj *objPtr,
			    CONST char *expected, CONST char *bytes,
			    int numBytes, CONST char **endPtrPtr, int flags);
MODULE_SCOPE void	TclParseInit(Tcl_Interp *interp, CONST char *string,
			    int numBytes, Tcl_Parse *parsePtr);
MODULE_SCOPE int	TclParseAllWhiteSpace(CONST char *src, int numBytes);
MODULE_SCOPE int	TclProcessReturn(Tcl_Interp *interp,
			    int code, int level, Tcl_Obj *returnOpts);
#ifndef TCL_NO_STACK_CHECK
MODULE_SCOPE int        TclpGetCStackParams(int **stackBoundPtr);
#endif
MODULE_SCOPE int	TclpObjLstat(Tcl_Obj *pathPtr, Tcl_StatBuf *buf);
MODULE_SCOPE Tcl_Obj *	TclpTempFileName(void);
MODULE_SCOPE Tcl_Obj *	TclNewFSPathObj(Tcl_Obj *dirPtr, CONST char *addStrRep,
			    int len);
MODULE_SCOPE int	TclpDeleteFile(CONST char *path);
MODULE_SCOPE void	TclpFinalizeCondition(Tcl_Condition *condPtr);
MODULE_SCOPE void	TclpFinalizeMutex(Tcl_Mutex *mutexPtr);
MODULE_SCOPE void	TclpFinalizePipes(void);
MODULE_SCOPE void	TclpFinalizeSockets _ANSI_ARGS_((void));
MODULE_SCOPE int	TclpThreadCreate(Tcl_ThreadId *idPtr,
			    Tcl_ThreadCreateProc proc, ClientData clientData,
			    int stackSize, int flags);
MODULE_SCOPE int	TclpFindVariable(CONST char *name, int *lengthPtr);
MODULE_SCOPE void	TclpInitLibraryPath(char **valuePtr,
			    int *lengthPtr, Tcl_Encoding *encodingPtr);
MODULE_SCOPE void	TclpInitLock(void);
MODULE_SCOPE void	TclpInitPlatform(void);
MODULE_SCOPE void	TclpInitUnlock(void);
MODULE_SCOPE int	TclpLoadFile(Tcl_Interp *interp, Tcl_Obj *pathPtr,
			    CONST char *sym1, CONST char *sym2,
			    Tcl_PackageInitProc **proc1Ptr,
			    Tcl_PackageInitProc **proc2Ptr,
			    ClientData *clientDataPtr,
			    Tcl_FSUnloadFileProc **unloadProcPtr);
MODULE_SCOPE Tcl_Obj *	TclpObjListVolumes(void);
MODULE_SCOPE void	TclpMasterLock(void);
MODULE_SCOPE void	TclpMasterUnlock(void);
MODULE_SCOPE int	TclpMatchFiles(Tcl_Interp *interp, char *separators,
			    Tcl_DString *dirPtr, char *pattern, char *tail);
MODULE_SCOPE int	TclpObjNormalizePath(Tcl_Interp *interp,
			    Tcl_Obj *pathPtr, int nextCheckpoint);
MODULE_SCOPE void	TclpNativeJoinPath(Tcl_Obj *prefix, char *joining);
MODULE_SCOPE Tcl_Obj *	TclpNativeSplitPath(Tcl_Obj *pathPtr, int *lenPtr);
MODULE_SCOPE Tcl_PathType TclpGetNativePathType(Tcl_Obj *pathPtr,
			    int *driveNameLengthPtr, Tcl_Obj **driveNameRef);
MODULE_SCOPE int 	TclCrossFilesystemCopy(Tcl_Interp *interp,
			    Tcl_Obj *source, Tcl_Obj *target);
MODULE_SCOPE int	TclpMatchInDirectory(Tcl_Interp *interp,
			    Tcl_Obj *resultPtr, Tcl_Obj *pathPtr,
			    CONST char *pattern, Tcl_GlobTypeData *types);
MODULE_SCOPE ClientData	TclpGetNativeCwd(ClientData clientData);
MODULE_SCOPE Tcl_FSDupInternalRepProc TclNativeDupInternalRep;
MODULE_SCOPE Tcl_Obj*	TclpObjLink(Tcl_Obj *pathPtr, Tcl_Obj *toPtr,
			    int linkType);
MODULE_SCOPE int	TclpObjChdir(Tcl_Obj *pathPtr);
MODULE_SCOPE Tcl_Obj *	TclPathPart(Tcl_Interp *interp, Tcl_Obj *pathPtr,
			    Tcl_PathPart portion);
MODULE_SCOPE void	TclpPanic(CONST char *format, ...);
MODULE_SCOPE char *	TclpReadlink(CONST char *fileName,
			    Tcl_DString *linkPtr);
MODULE_SCOPE void	TclpReleaseFile(TclFile file);
MODULE_SCOPE void	TclpSetInterfaces(void);
MODULE_SCOPE void	TclpSetVariables(Tcl_Interp *interp);
MODULE_SCOPE void	TclpUnloadFile(Tcl_LoadHandle loadHandle);
MODULE_SCOPE void *	TclpThreadDataKeyGet(Tcl_ThreadDataKey *keyPtr);
MODULE_SCOPE void	TclpThreadDataKeySet(Tcl_ThreadDataKey *keyPtr,
			    void *data);
MODULE_SCOPE void	TclpThreadExit(int status);
MODULE_SCOPE int	TclpThreadGetStackSize(void);
MODULE_SCOPE void	TclRememberCondition(Tcl_Condition *mutex);
MODULE_SCOPE void	TclRememberJoinableThread(Tcl_ThreadId id);
MODULE_SCOPE void	TclRememberMutex(Tcl_Mutex *mutex);
MODULE_SCOPE void	TclRemoveScriptLimitCallbacks(Tcl_Interp *interp);
MODULE_SCOPE void	TclSetBgErrorHandler(Tcl_Interp *interp,
			    Tcl_Obj *cmdPrefix);
MODULE_SCOPE void	TclSetBignumIntRep (Tcl_Obj *objPtr,
			    mp_int *bignumValue);
MODULE_SCOPE void	TclSetCmdNameObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
			    Command *cmdPtr);
MODULE_SCOPE void	TclSetProcessGlobalValue(ProcessGlobalValue *pgvPtr,
			    Tcl_Obj *newValue, Tcl_Encoding encoding);
MODULE_SCOPE void	TclSignalExitThread(Tcl_ThreadId id, int result);
MODULE_SCOPE void *	TclStackRealloc(Tcl_Interp *interp, void *ptr,
			    int numBytes);
MODULE_SCOPE Tcl_Obj *	TclStringObjReverse(Tcl_Obj *objPtr);
MODULE_SCOPE int	TclSubstTokens(Tcl_Interp *interp, Tcl_Token *tokenPtr,
			    int count, int *tokensLeftPtr, int line);
MODULE_SCOPE void	TclTransferResult(Tcl_Interp *sourceInterp, int result,
			    Tcl_Interp *targetInterp);
MODULE_SCOPE Tcl_Obj *	TclpNativeToNormalized(ClientData clientData);
MODULE_SCOPE Tcl_Obj *	TclpFilesystemPathType(Tcl_Obj *pathPtr);
MODULE_SCOPE Tcl_PackageInitProc *TclpFindSymbol(Tcl_Interp *interp,
			    Tcl_LoadHandle loadHandle, CONST char *symbol);
MODULE_SCOPE int	TclpDlopen(Tcl_Interp *interp, Tcl_Obj *pathPtr,
			    Tcl_LoadHandle *loadHandle,
			    Tcl_FSUnloadFileProc **unloadProcPtr);
MODULE_SCOPE int	TclpUtime(Tcl_Obj *pathPtr, struct utimbuf *tval);
#ifdef TCL_LOAD_FROM_MEMORY
MODULE_SCOPE void*	TclpLoadMemoryGetBuffer(Tcl_Interp *interp, int size);
MODULE_SCOPE int	TclpLoadMemory(Tcl_Interp *interp, void *buffer,
			    int size, int codeSize, Tcl_LoadHandle *loadHandle,
			    Tcl_FSUnloadFileProc **unloadProcPtr);
#endif
MODULE_SCOPE void	TclInitThreadStorage(void);
MODULE_SCOPE void	TclpFinalizeThreadDataThread(void);
MODULE_SCOPE void	TclFinalizeThreadStorage(void);
#ifdef TCL_WIDE_CLICKS
MODULE_SCOPE Tcl_WideInt TclpGetWideClicks(void);
MODULE_SCOPE double	TclpWideClicksToNanoseconds(Tcl_WideInt clicks);
#endif
MODULE_SCOPE Tcl_Obj *	TclDisassembleByteCodeObj(Tcl_Obj *objPtr);

/*
 *----------------------------------------------------------------
 * Command procedures in the generic core:
 *----------------------------------------------------------------
 */

MODULE_SCOPE int	Tcl_AfterObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_AppendObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ApplyObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ArrayObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_BinaryObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_BreakObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_CaseObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_CatchObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_CdObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclChanPendingObjCmd(
			    ClientData clientData, Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]); /* TIP 287 */
MODULE_SCOPE int	TclChanTruncateObjCmd(
			    ClientData clientData, Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE void	TclClockInit(Tcl_Interp*);
MODULE_SCOPE int	TclClockOldscanObjCmd(
			    ClientData clientData, Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_CloseObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ConcatObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ContinueObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE Tcl_TimerToken TclCreateAbsoluteTimerHandler(
			    Tcl_Time *timePtr, Tcl_TimerProc *proc,
			    ClientData clientData);
MODULE_SCOPE int	TclDefaultBgErrorHandlerObjCmd(
			    ClientData clientData, Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_DictObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_DisassembleObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_EncodingObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_EofObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ErrorObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_EvalObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ExecObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ExitObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ExprObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_FblockedObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_FconfigureObjCmd(
			    ClientData clientData, Tcl_Interp *interp,
			    int objc, Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_FcopyObjCmd(ClientData dummy,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_FileObjCmd(ClientData dummy,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_FileEventObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_FlushObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ForObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ForeachObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_FormatObjCmd(ClientData dummy,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_GetsObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_GlobalObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_GlobObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_IfObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_IncrObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE Tcl_Command TclInitInfoCmd(Tcl_Interp *interp);
MODULE_SCOPE int	Tcl_InterpObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int argc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_JoinObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LappendObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LassignObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LindexObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LinsertObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LlengthObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ListObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LoadObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LrangeObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LrepeatObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LreplaceObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LreverseObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LsearchObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LsetObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_LsortObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_NamespaceObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_OpenObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_PackageObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_PidObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_PutsObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_PwdObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ReadObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_RegexpObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_RegsubObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_RenameObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ReturnObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_ScanObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_SeekObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_SetObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_SplitObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_SocketObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_SourceObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_StringObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_SubstObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_SwitchObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_TellObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_TimeObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_TraceObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_UnloadObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_UnsetObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_UpdateObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_UplevelObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_UpvarObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_VariableObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_VwaitObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	Tcl_WhileObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);

/*
 *----------------------------------------------------------------
 * Compilation procedures for commands in the generic core:
 *----------------------------------------------------------------
 */

MODULE_SCOPE int	TclCompileAppendCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileBreakCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileCatchCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileContinueCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileDictCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileExprCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileForCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileForeachCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileGlobalCmd(Tcl_Interp *interp, Tcl_Parse *parsePtr,
			    struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileIfCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileIncrCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileLappendCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileLassignCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileLindexCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileListCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileLlengthCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileLsetCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileNamespaceCmd(Tcl_Interp *interp,
	                    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileNoOp(Tcl_Interp *interp,
	                    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileRegexpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileReturnCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileSetCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileStringCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileSwitchCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileUpvarCmd(Tcl_Interp *interp,
	                    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileVariableCmd(Tcl_Interp *interp,
	                    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileWhileCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);

MODULE_SCOPE int	TclInvertOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileInvertOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclNotOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileNotOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclAddOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileAddOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclMulOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileMulOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclAndOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileAndOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclOrOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileOrOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclXorOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileXorOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclPowOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompilePowOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclLshiftOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileLshiftOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclRshiftOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileRshiftOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclModOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileModOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclNeqOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileNeqOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclStrneqOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileStrneqOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclInOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileInOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclNiOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileNiOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclMinusOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileMinusOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclDivOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileDivOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclLessOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileLessOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclLeqOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileLeqOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclGreaterOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileGreaterOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclGeqOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileGeqOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclEqOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileEqOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);
MODULE_SCOPE int	TclStreqOpCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *CONST objv[]);
MODULE_SCOPE int	TclCompileStreqOpCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, struct CompileEnv *envPtr);

/*
 * Functions defined in generic/tclVar.c and currenttly exported only for use
 * by the bytecode compiler and engine. Some of these could later be placed in
 * the public interface.
 */

MODULE_SCOPE Var *	TclObjLookupVarEx(Tcl_Interp * interp,
			    Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, int flags,
			    CONST char * msg, CONST int createPart1,
			    CONST int createPart2, Var **arrayPtrPtr);
MODULE_SCOPE Var *	TclLookupArrayElement(Tcl_Interp *interp,
			    Tcl_Obj *arrayNamePtr, Tcl_Obj *elNamePtr,
			    CONST int flags, CONST char *msg,
			    CONST int createPart1, CONST int createPart2,
			    Var *arrayPtr, int index);
MODULE_SCOPE Tcl_Obj *	TclPtrGetVar(Tcl_Interp *interp,
			    Var *varPtr, Var *arrayPtr, Tcl_Obj *part1Ptr,
			    Tcl_Obj *part2Ptr, CONST int flags, int index);
MODULE_SCOPE Tcl_Obj *	TclPtrSetVar(Tcl_Interp *interp,
			    Var *varPtr, Var *arrayPtr, Tcl_Obj *part1Ptr,
			    Tcl_Obj *part2Ptr, Tcl_Obj *newValuePtr,
			    CONST int flags, int index);
MODULE_SCOPE Tcl_Obj *	TclPtrIncrObjVar (Tcl_Interp *interp,
			    Var *varPtr, Var *arrayPtr, Tcl_Obj *part1Ptr,
			    Tcl_Obj *part2Ptr, Tcl_Obj *incrPtr,
			    CONST int flags, int index);
MODULE_SCOPE int        TclPtrObjMakeUpvar(Tcl_Interp *interp, Var *otherPtr,
	                    Tcl_Obj *myNamePtr, int myFlags, int index);
MODULE_SCOPE void	TclInvalidateNsPath(Namespace *nsPtr);

/*
 * The new extended interface to the variable traces.
 */

MODULE_SCOPE int	TclObjCallVarTraces(Interp *iPtr, Var *arrayPtr,
			    Var *varPtr, Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr,
			    int flags, int leaveErrMsg, int index);

/*
 *----------------------------------------------------------------
 * Macros used by the Tcl core to create and release Tcl objects.
 * TclNewObj(objPtr) creates a new object denoting an empty string.
 * TclDecrRefCount(objPtr) decrements the object's reference count, and frees
 * the object if its reference count is zero. These macros are inline versions
 * of Tcl_NewObj() and Tcl_DecrRefCount(). Notice that the names differ in not
 * having a "_" after the "Tcl". Notice also that these macros reference their
 * argument more than once, so you should avoid calling them with an
 * expression that is expensive to compute or has side effects. The ANSI C
 * "prototypes" for these macros are:
 *
 * MODULE_SCOPE void	TclNewObj(Tcl_Obj *objPtr);
 * MODULE_SCOPE void	TclDecrRefCount(Tcl_Obj *objPtr);
 *
 * These macros are defined in terms of two macros that depend on memory
 * allocator in use: TclAllocObjStorage, TclFreeObjStorage. They are defined
 * below.
 *----------------------------------------------------------------
 */

/*
 * DTrace object allocation probe macros.
 */

#ifdef USE_DTRACE
#include "tclDTrace.h"
#define	TCL_DTRACE_OBJ_CREATE(objPtr)	TCL_OBJ_CREATE(objPtr)
#define	TCL_DTRACE_OBJ_FREE(objPtr)	TCL_OBJ_FREE(objPtr)
#else /* USE_DTRACE */
#define	TCL_DTRACE_OBJ_CREATE(objPtr)	{}
#define	TCL_DTRACE_OBJ_FREE(objPtr)	{}
#endif /* USE_DTRACE */

#ifdef TCL_COMPILE_STATS
#  define TclIncrObjsAllocated() \
    tclObjsAlloced++
#  define TclIncrObjsFreed() \
    tclObjsFreed++
#else
#  define TclIncrObjsAllocated()
#  define TclIncrObjsFreed()
#endif /* TCL_COMPILE_STATS */

#ifndef TCL_MEM_DEBUG
# define TclNewObj(objPtr) \
    TclIncrObjsAllocated(); \
    TclAllocObjStorage(objPtr); \
    (objPtr)->refCount = 0; \
    (objPtr)->bytes    = tclEmptyStringRep; \
    (objPtr)->length   = 0; \
    (objPtr)->typePtr  = NULL; \
    TCL_DTRACE_OBJ_CREATE(objPtr)

/*
 * Invalidate the string rep first so we can use the bytes value for our
 * pointer chain, and signal an obj deletion (as opposed to shimmering) with
 * 'length == -1'.
 * Use empty 'if ; else' to handle use in unbraced outer if/else conditions
 */

# define TclDecrRefCount(objPtr) \
    if (--(objPtr)->refCount > 0) ; else { \
	if (!(objPtr)->typePtr || !(objPtr)->typePtr->freeIntRepProc) { \
	    TCL_DTRACE_OBJ_FREE(objPtr); \
  	    if ((objPtr)->bytes \
	            && ((objPtr)->bytes != tclEmptyStringRep)) { \
	        ckfree((char *) (objPtr)->bytes); \
	    } \
            (objPtr)->length = -1; \
	    TclFreeObjStorage(objPtr); \
	    TclIncrObjsFreed(); \
	} else { \
	    TclFreeObj(objPtr); \
	} \
    }

#if defined(PURIFY)

/*
 * The PURIFY mode is like the regular mode, but instead of doing block
 * Tcl_Obj allocation and keeping a freed list for efficiency, it always
 * allocates and frees a single Tcl_Obj so that tools like Purify can better
 * track memory leaks
 */

#  define TclAllocObjStorage(objPtr) \
	(objPtr) = (Tcl_Obj *) Tcl_Alloc(sizeof(Tcl_Obj))

#  define TclFreeObjStorage(objPtr) \
	ckfree((char *) (objPtr))

#undef USE_THREAD_ALLOC
#elif defined(TCL_THREADS) && defined(USE_THREAD_ALLOC)

/*
 * The TCL_THREADS mode is like the regular mode but allocates Tcl_Obj's from
 * per-thread caches.
 */

MODULE_SCOPE Tcl_Obj *	TclThreadAllocObj(void);
MODULE_SCOPE void	TclThreadFreeObj(Tcl_Obj *);
MODULE_SCOPE Tcl_Mutex *TclpNewAllocMutex(void);
MODULE_SCOPE void	TclFreeAllocCache(void *);
MODULE_SCOPE void *	TclpGetAllocCache(void);
MODULE_SCOPE void	TclpSetAllocCache(void *);
MODULE_SCOPE void	TclpFreeAllocMutex(Tcl_Mutex *mutex);
MODULE_SCOPE void	TclpFreeAllocCache(void *);

#  define TclAllocObjStorage(objPtr) \
	(objPtr) = TclThreadAllocObj()

#  define TclFreeObjStorage(objPtr) \
	TclThreadFreeObj((objPtr))

#else /* not PURIFY or USE_THREAD_ALLOC */

#ifdef TCL_THREADS
/* declared in tclObj.c */
MODULE_SCOPE Tcl_Mutex	tclObjMutex;
#endif

#  define TclAllocObjStorage(objPtr) \
	Tcl_MutexLock(&tclObjMutex); \
	if (tclFreeObjList == NULL) { \
	    TclAllocateFreeObjects(); \
	} \
	(objPtr) = tclFreeObjList; \
	tclFreeObjList = (Tcl_Obj *) \
		tclFreeObjList->internalRep.otherValuePtr; \
	Tcl_MutexUnlock(&tclObjMutex)

#  define TclFreeObjStorage(objPtr) \
	Tcl_MutexLock(&tclObjMutex); \
	(objPtr)->internalRep.otherValuePtr = (void *) tclFreeObjList; \
	tclFreeObjList = (objPtr); \
	Tcl_MutexUnlock(&tclObjMutex)
#endif

#else /* TCL_MEM_DEBUG */
MODULE_SCOPE void	TclDbInitNewObj(Tcl_Obj *objPtr);

# define TclDbNewObj(objPtr, file, line) \
    TclIncrObjsAllocated(); \
    (objPtr) = (Tcl_Obj *) Tcl_DbCkalloc(sizeof(Tcl_Obj), (file), (line)); \
    TclDbInitNewObj(objPtr); \
    TCL_DTRACE_OBJ_CREATE(objPtr)

# define TclNewObj(objPtr) \
    TclDbNewObj(objPtr, __FILE__, __LINE__);

# define TclDecrRefCount(objPtr) \
    Tcl_DbDecrRefCount(objPtr, __FILE__, __LINE__)

# define TclNewListObjDirect(objc, objv) \
    TclDbNewListObjDirect(objc, objv, __FILE__, __LINE__)

#undef USE_THREAD_ALLOC
#endif /* TCL_MEM_DEBUG */

/*
 *----------------------------------------------------------------
 * Macro used by the Tcl core to set a Tcl_Obj's string representation to a
 * copy of the "len" bytes starting at "bytePtr". This code works even if the
 * byte array contains NULLs as long as the length is correct. Because "len"
 * is referenced multiple times, it should be as simple an expression as
 * possible. The ANSI C "prototype" for this macro is:
 *
 * MODULE_SCOPE void TclInitStringRep(Tcl_Obj *objPtr, char *bytePtr, int len);
 *
 * This macro should only be called on an unshared objPtr where
 *  objPtr->typePtr->freeIntRepProc == NULL
 *----------------------------------------------------------------
 */

#define TclInitStringRep(objPtr, bytePtr, len) \
    if ((len) == 0) { \
	(objPtr)->bytes	 = tclEmptyStringRep; \
	(objPtr)->length = 0; \
    } else { \
	(objPtr)->bytes = (char *) ckalloc((unsigned) ((len) + 1)); \
	memcpy((void *) (objPtr)->bytes, (void *) (bytePtr), \
		(unsigned) (len)); \
	(objPtr)->bytes[len] = '\0'; \
	(objPtr)->length = (len); \
    }

/*
 *----------------------------------------------------------------
 * Macro used by the Tcl core to get the string representation's byte array
 * pointer from a Tcl_Obj. This is an inline version of Tcl_GetString(). The
 * macro's expression result is the string rep's byte pointer which might be
 * NULL. The bytes referenced by this pointer must not be modified by the
 * caller. The ANSI C "prototype" for this macro is:
 *
 * MODULE_SCOPE char *	TclGetString(Tcl_Obj *objPtr);
 *----------------------------------------------------------------
 */

#define TclGetString(objPtr) \
    ((objPtr)->bytes? (objPtr)->bytes : Tcl_GetString((objPtr)))


#define TclGetStringFromObj(objPtr, lenPtr) \
    ((objPtr)->bytes \
	    ? (*(lenPtr) = (objPtr)->length, (objPtr)->bytes)	\
	    : Tcl_GetStringFromObj((objPtr), (lenPtr)))

/*
 *----------------------------------------------------------------
 * Macro used by the Tcl core to clean out an object's internal
 * representation. Does not actually reset the rep's bytes. The ANSI C
 * "prototype" for this macro is:
 *
 * MODULE_SCOPE void	TclFreeIntRep(Tcl_Obj *objPtr);
 *----------------------------------------------------------------
 */

#define TclFreeIntRep(objPtr) \
    if ((objPtr)->typePtr != NULL && \
	    (objPtr)->typePtr->freeIntRepProc != NULL) { \
	(objPtr)->typePtr->freeIntRepProc(objPtr); \
    }

/*
 *----------------------------------------------------------------
 * Macro used by the Tcl core to clean out an object's string representation.
 * The ANSI C "prototype" for this macro is:
 *
 * MODULE_SCOPE void	TclInvalidateStringRep(Tcl_Obj *objPtr);
 *----------------------------------------------------------------
 */

#define TclInvalidateStringRep(objPtr) \
    if (objPtr->bytes != NULL) { \
	if (objPtr->bytes != tclEmptyStringRep) {\
	    ckfree((char *) objPtr->bytes);\
	}\
	objPtr->bytes = NULL;\
    }\

/*
 *----------------------------------------------------------------
 * Macro used by the Tcl core get a unicode char from a utf string. It checks
 * to see if we have a one-byte utf char before calling the real
 * Tcl_UtfToUniChar, as this will save a lot of time for primarily ascii
 * string handling. The macro's expression result is 1 for the 1-byte case or
 * the result of Tcl_UtfToUniChar. The ANSI C "prototype" for this macro is:
 *
 * MODULE_SCOPE int	TclUtfToUniChar(CONST char *string, Tcl_UniChar *ch);
 *----------------------------------------------------------------
 */

#define TclUtfToUniChar(str, chPtr) \
	((((unsigned char) *(str)) < 0xC0) ? \
	    ((*(chPtr) = (Tcl_UniChar) *(str)), 1) \
	    : Tcl_UtfToUniChar(str, chPtr))

/*
 *----------------------------------------------------------------
 * Macro used by the Tcl core to compare Unicode strings. On big-endian
 * systems we can use the more efficient memcmp, but this would not be
 * lexically correct on little-endian systems. The ANSI C "prototype" for
 * this macro is:
 *
 * MODULE_SCOPE int	TclUniCharNcmp(CONST Tcl_UniChar *cs,
 *			    CONST Tcl_UniChar *ct, unsigned long n);
 *----------------------------------------------------------------
 */

#ifdef WORDS_BIGENDIAN
#   define TclUniCharNcmp(cs,ct,n) memcmp((cs),(ct),(n)*sizeof(Tcl_UniChar))
#else /* !WORDS_BIGENDIAN */
#   define TclUniCharNcmp Tcl_UniCharNcmp
#endif /* WORDS_BIGENDIAN */

/*
 *----------------------------------------------------------------
 * Macro used by the Tcl core to increment a namespace's export export epoch
 * counter. The ANSI C "prototype" for this macro is:
 *
 * MODULE_SCOPE void	TclInvalidateNsCmdLookup(Namespace *nsPtr);
 *----------------------------------------------------------------
 */

#define TclInvalidateNsCmdLookup(nsPtr) \
    if ((nsPtr)->numExportPatterns) { \
	(nsPtr)->exportLookupEpoch++; \
    }

/*
 *----------------------------------------------------------------------
 *
 * Core procedures added to libtommath for bignum manipulation.
 *
 *----------------------------------------------------------------------
 */

MODULE_SCOPE int	TclTommath_Init(Tcl_Interp *interp);
MODULE_SCOPE void	TclBNInitBignumFromLong(mp_int *bignum, long initVal);
MODULE_SCOPE void	TclBNInitBignumFromWideInt(mp_int *bignum,
			    Tcl_WideInt initVal);
MODULE_SCOPE void	TclBNInitBignumFromWideUInt(mp_int *bignum,
			    Tcl_WideUInt initVal);

/*
 *----------------------------------------------------------------
 * Macro used by the Tcl core to check whether a pattern has any characters
 * special to [string match]. The ANSI C "prototype" for this macro is:
 *
 * MODULE_SCOPE int	TclMatchIsTrivial(CONST char *pattern);
 *----------------------------------------------------------------
 */

#define TclMatchIsTrivial(pattern)	strpbrk((pattern), "*[]]?\\") == NULL

/*
 *----------------------------------------------------------------
 * Macro used by the Tcl core to write the string rep of a long integer to a
 * character buffer. The ANSI C "prototype" for this macro is:
 *
 * MODULE_SCOPE int	TclFormatInt(char *buf, long n);
 *----------------------------------------------------------------
 */

#define TclFormatInt(buf, n)		sprintf((buf), "%ld", (long)(n))

/*
 *----------------------------------------------------------------
 * Macros used by the Tcl core to set a Tcl_Obj's numeric representation
 * avoiding the corresponding function calls in time critical parts of the
 * core. They should only be called on unshared objects. The ANSI C
 * "prototypes" for these macros are:
 *
 * MODULE_SCOPE void	TclSetIntObj(Tcl_Obj *objPtr, int intValue);
 * MODULE_SCOPE void	TclSetLongObj(Tcl_Obj *objPtr, long longValue);
 * MODULE_SCOPE void	TclSetBooleanObj(Tcl_Obj *objPtr, long boolValue);
 * MODULE_SCOPE void	TclSetWideIntObj(Tcl_Obj *objPtr, Tcl_WideInt w);
 * MODULE_SCOPE void	TclSetDoubleObj(Tcl_Obj *objPtr, double d);
 *----------------------------------------------------------------
 */

#define TclSetIntObj(objPtr, i) \
    TclInvalidateStringRep(objPtr);\
    TclFreeIntRep(objPtr); \
    (objPtr)->internalRep.longValue = (long)(i); \
    (objPtr)->typePtr = &tclIntType

#define TclSetLongObj(objPtr, l) \
    TclSetIntObj((objPtr), (l))

/*
 * NOTE: There is to be no such thing as a "pure" boolean. Boolean values set
 * programmatically go straight to being "int" Tcl_Obj's, with value 0 or 1.
 * The only "boolean" Tcl_Obj's shall be those holding the cached boolean
 * value of strings like: "yes", "no", "true", "false", "on", "off".
 */

#define TclSetBooleanObj(objPtr, b) \
    TclSetIntObj((objPtr), ((b)? 1 : 0));

#ifndef NO_WIDE_TYPE
#define TclSetWideIntObj(objPtr, w) \
    TclInvalidateStringRep(objPtr);\
    TclFreeIntRep(objPtr); \
    (objPtr)->internalRep.wideValue = (Tcl_WideInt)(w); \
    (objPtr)->typePtr = &tclWideIntType
#endif

#define TclSetDoubleObj(objPtr, d) \
    TclInvalidateStringRep(objPtr);\
    TclFreeIntRep(objPtr); \
    (objPtr)->internalRep.doubleValue = (double)(d); \
    (objPtr)->typePtr = &tclDoubleType

/*
 *----------------------------------------------------------------
 * Macros used by the Tcl core to create and initialise objects of standard
 * types, avoiding the corresponding function calls in time critical parts of
 * the core. The ANSI C "prototypes" for these macros are:
 *
 * MODULE_SCOPE void	TclNewIntObj(Tcl_Obj *objPtr, int i);
 * MODULE_SCOPE void	TclNewLongObj(Tcl_Obj *objPtr, long l);
 * MODULE_SCOPE void	TclNewBooleanObj(Tcl_Obj *objPtr, int b);
 * MODULE_SCOPE void	TclNewWideObj(Tcl_Obj *objPtr, Tcl_WideInt w);
 * MODULE_SCOPE void	TclNewDoubleObj(Tcl_Obj *objPtr, double d);
 * MODULE_SCOPE void	TclNewStringObj(Tcl_Obj *objPtr, char *s, int len);
 * MODULE_SCOPE void	TclNewLiteralStringObj(Tcl_Obj*objPtr, char*sLiteral);
 *
 *----------------------------------------------------------------
 */

#ifndef TCL_MEM_DEBUG
#define TclNewIntObj(objPtr, i) \
    TclIncrObjsAllocated(); \
    TclAllocObjStorage(objPtr); \
    (objPtr)->refCount = 0; \
    (objPtr)->bytes = NULL; \
    (objPtr)->internalRep.longValue = (long)(i); \
    (objPtr)->typePtr = &tclIntType; \
    TCL_DTRACE_OBJ_CREATE(objPtr)

#define TclNewLongObj(objPtr, l) \
    TclNewIntObj((objPtr), (l))

/*
 * NOTE: There is to be no such thing as a "pure" boolean.
 * See comment above TclSetBooleanObj macro above.
 */
#define TclNewBooleanObj(objPtr, b) \
    TclNewIntObj((objPtr), ((b)? 1 : 0))

#define TclNewDoubleObj(objPtr, d) \
    TclIncrObjsAllocated(); \
    TclAllocObjStorage(objPtr); \
    (objPtr)->refCount = 0; \
    (objPtr)->bytes = NULL; \
    (objPtr)->internalRep.doubleValue = (double)(d); \
    (objPtr)->typePtr = &tclDoubleType; \
    TCL_DTRACE_OBJ_CREATE(objPtr)

#define TclNewStringObj(objPtr, s, len) \
    TclIncrObjsAllocated(); \
    TclAllocObjStorage(objPtr); \
    (objPtr)->refCount = 0; \
    TclInitStringRep((objPtr), (s), (len));\
    (objPtr)->typePtr = NULL; \
    TCL_DTRACE_OBJ_CREATE(objPtr)

#else /* TCL_MEM_DEBUG */
#define TclNewIntObj(objPtr, i)   \
    (objPtr) = Tcl_NewIntObj(i)

#define TclNewLongObj(objPtr, l) \
    (objPtr) = Tcl_NewLongObj(l)

#define TclNewBooleanObj(objPtr, b) \
    (objPtr) = Tcl_NewBooleanObj(b)

#define TclNewDoubleObj(objPtr, d) \
    (objPtr) = Tcl_NewDoubleObj(d)

#define TclNewStringObj(objPtr, s, len) \
    (objPtr) = Tcl_NewStringObj((s), (len))
#endif /* TCL_MEM_DEBUG */

/*
 * The sLiteral argument *must* be a string literal; the incantation with
 * sizeof(sLiteral "") will fail to compile otherwise.
 */
#define TclNewLiteralStringObj(objPtr, sLiteral) \
    TclNewStringObj((objPtr), (sLiteral), (int) (sizeof(sLiteral "") - 1))

/*
 *----------------------------------------------------------------
 * Macros used by the Tcl core to test for some special double values.
 * The ANSI C "prototypes" for these macros are:
 *
 * MODULE_SCOPE int	TclIsInfinite(double d);
 * MODULE_SCOPE int	TclIsNaN(double d);
 */

#ifdef _MSC_VER
#define TclIsInfinite(d)	( ! (_finite((d))) )
#define TclIsNaN(d)		(_isnan((d)))
#else
#define TclIsInfinite(d)	( (d) > DBL_MAX || (d) < -DBL_MAX )
#define TclIsNaN(d)		((d) != (d))
#endif

/*
 * ----------------------------------------------------------------------
 * Macro to use to find the offset of a field in a structure.
 * Computes number of bytes from beginning of structure to a given field.
 */

#ifdef offsetof
#define TclOffset(type, field) ((int) offsetof(type, field))
#else
#define TclOffset(type, field) ((int) ((char *) &((type *) 0)->field))
#endif

/*
 *----------------------------------------------------------------
 * Inline version of Tcl_GetCurrentNamespace and Tcl_GetGlobalNamespace
 */

#define TclGetCurrentNamespace(interp) \
    (Tcl_Namespace *) ((Interp *)(interp))->varFramePtr->nsPtr

#define TclGetGlobalNamespace(interp) \
    (Tcl_Namespace *) ((Interp *)(interp))->globalNsPtr

/*
 *----------------------------------------------------------------
 * Inline version of TclCleanupCommand; still need the function as it is in
 * the internal stubs, but the core can use the macro instead.
 */

#define TclCleanupCommandMacro(cmdPtr) \
    if (--(cmdPtr)->refCount <= 0) { \
	ckfree((char *) (cmdPtr));\
    }

/*
 *----------------------------------------------------------------
 * Inline versions of Tcl_LimitReady() and Tcl_LimitExceeded to limit number
 * of calls out of the critical path. Note that this code isn't particularly
 * readable; the non-inline version (in tclInterp.c) is much easier to
 * understand. Note also that these macros takes different args (iPtr->limit)
 * to the non-inline version.
 */

#define TclLimitExceeded(limit) ((limit).exceeded != 0)

#define TclLimitReady(limit)						\
    (((limit).active == 0) ? 0 :					\
    (++(limit).granularityTicker,					\
    ((((limit).active & TCL_LIMIT_COMMANDS) &&				\
	    (((limit).cmdGranularity == 1) ||				\
	    ((limit).granularityTicker % (limit).cmdGranularity == 0)))	\
	    ? 1 :							\
    (((limit).active & TCL_LIMIT_TIME) &&				\
	    (((limit).timeGranularity == 1) ||				\
	    ((limit).granularityTicker % (limit).timeGranularity == 0)))\
	    ? 1 : 0)))


#include "tclPort.h"
#include "tclIntDecls.h"
#include "tclIntPlatDecls.h"
#include "tclTomMathDecls.h"

#endif /* _TCLINT */

/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 4
 * fill-column: 78
 * End:
 */