1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
| | /* Fundamental definitions for GNU Emacs Lisp interpreter.
Copyright (C) 1985-1987, 1993-1995, 1997-2015 Free Software Foundation,
Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#ifndef EMACS_LISP_H
#define EMACS_LISP_H
#include <setjmp.h>
#include <stdalign.h>
#include <stdarg.h>
#include <stddef.h>
#include <float.h>
#include <inttypes.h>
#include <limits.h>
#include <intprops.h>
#include <verify.h>
INLINE_HEADER_BEGIN
/* Define a TYPE constant ID as an externally visible name. Use like this:
DEFINE_GDB_SYMBOL_BEGIN (TYPE, ID)
# define ID (some integer preprocessor expression of type TYPE)
DEFINE_GDB_SYMBOL_END (ID)
This hack is for the benefit of compilers that do not make macro
definitions or enums visible to the debugger. It's used for symbols
that .gdbinit needs. */
#define DECLARE_GDB_SYM(type, id) type const id EXTERNALLY_VISIBLE
#ifdef MAIN_PROGRAM
# define DEFINE_GDB_SYMBOL_BEGIN(type, id) DECLARE_GDB_SYM (type, id)
# define DEFINE_GDB_SYMBOL_END(id) = id;
#else
# define DEFINE_GDB_SYMBOL_BEGIN(type, id) extern DECLARE_GDB_SYM (type, id)
# define DEFINE_GDB_SYMBOL_END(val) ;
#endif
/* The ubiquitous max and min macros. */
#undef min
#undef max
#define max(a, b) ((a) > (b) ? (a) : (b))
#define min(a, b) ((a) < (b) ? (a) : (b))
/* Number of elements in an array. */
#define ARRAYELTS(arr) (sizeof (arr) / sizeof (arr)[0])
/* Number of bits in a Lisp_Object tag. */
DEFINE_GDB_SYMBOL_BEGIN (int, GCTYPEBITS)
#define GCTYPEBITS 3
DEFINE_GDB_SYMBOL_END (GCTYPEBITS)
/* The number of bits needed in an EMACS_INT over and above the number
of bits in a pointer. This is 0 on systems where:
1. We can specify multiple-of-8 alignment on static variables.
2. We know malloc returns a multiple of 8. */
#if (defined alignas \
&& (defined GNU_MALLOC || defined DOUG_LEA_MALLOC || defined __GLIBC__ \
|| defined DARWIN_OS || defined __sun || defined __MINGW32__ \
|| defined CYGWIN))
# define NONPOINTER_BITS 0
#else
# define NONPOINTER_BITS GCTYPEBITS
#endif
/* EMACS_INT - signed integer wide enough to hold an Emacs value
EMACS_INT_MAX - maximum value of EMACS_INT; can be used in #if
pI - printf length modifier for EMACS_INT
EMACS_UINT - unsigned variant of EMACS_INT */
#ifndef EMACS_INT_MAX
# if INTPTR_MAX <= 0
# error "INTPTR_MAX misconfigured"
# elif INTPTR_MAX <= INT_MAX >> NONPOINTER_BITS && !defined WIDE_EMACS_INT
typedef int EMACS_INT;
typedef unsigned int EMACS_UINT;
# define EMACS_INT_MAX INT_MAX
# define pI ""
# elif INTPTR_MAX <= LONG_MAX >> NONPOINTER_BITS && !defined WIDE_EMACS_INT
typedef long int EMACS_INT;
typedef unsigned long EMACS_UINT;
# define EMACS_INT_MAX LONG_MAX
# define pI "l"
/* Check versus LLONG_MAX, not LLONG_MAX >> NONPOINTER_BITS.
In theory this is not safe, but in practice it seems to be OK. */
# elif INTPTR_MAX <= LLONG_MAX
typedef long long int EMACS_INT;
typedef unsigned long long int EMACS_UINT;
# define EMACS_INT_MAX LLONG_MAX
# define pI "ll"
# else
# error "INTPTR_MAX too large"
# endif
#endif
/* Number of bits to put in each character in the internal representation
of bool vectors. This should not vary across implementations. */
enum { BOOL_VECTOR_BITS_PER_CHAR =
#define BOOL_VECTOR_BITS_PER_CHAR 8
BOOL_VECTOR_BITS_PER_CHAR
};
/* An unsigned integer type representing a fixed-length bit sequence,
suitable for bool vector words, GC mark bits, etc. Normally it is size_t
for speed, but it is unsigned char on weird platforms. */
#if BOOL_VECTOR_BITS_PER_CHAR == CHAR_BIT
typedef size_t bits_word;
# define BITS_WORD_MAX SIZE_MAX
enum { BITS_PER_BITS_WORD = CHAR_BIT * sizeof (bits_word) };
#else
typedef unsigned char bits_word;
# define BITS_WORD_MAX ((1u << BOOL_VECTOR_BITS_PER_CHAR) - 1)
enum { BITS_PER_BITS_WORD = BOOL_VECTOR_BITS_PER_CHAR };
#endif
verify (BITS_WORD_MAX >> (BITS_PER_BITS_WORD - 1) == 1);
/* Number of bits in some machine integer types. */
enum
{
BITS_PER_CHAR = CHAR_BIT,
BITS_PER_SHORT = CHAR_BIT * sizeof (short),
BITS_PER_LONG = CHAR_BIT * sizeof (long int),
BITS_PER_EMACS_INT = CHAR_BIT * sizeof (EMACS_INT)
};
/* printmax_t and uprintmax_t are types for printing large integers.
These are the widest integers that are supported for printing.
pMd etc. are conversions for printing them.
On C99 hosts, there's no problem, as even the widest integers work.
Fall back on EMACS_INT on pre-C99 hosts. */
#ifdef PRIdMAX
typedef intmax_t printmax_t;
typedef uintmax_t uprintmax_t;
# define pMd PRIdMAX
# define pMu PRIuMAX
#else
typedef EMACS_INT printmax_t;
typedef EMACS_UINT uprintmax_t;
# define pMd pI"d"
# define pMu pI"u"
#endif
/* Use pD to format ptrdiff_t values, which suffice for indexes into
buffers and strings. Emacs never allocates objects larger than
PTRDIFF_MAX bytes, as they cause problems with pointer subtraction.
In C99, pD can always be "t"; configure it here for the sake of
pre-C99 libraries such as glibc 2.0 and Solaris 8. */
#if PTRDIFF_MAX == INT_MAX
# define pD ""
#elif PTRDIFF_MAX == LONG_MAX
# define pD "l"
#elif PTRDIFF_MAX == LLONG_MAX
# define pD "ll"
#else
# define pD "t"
#endif
/* Extra internal type checking? */
/* Define Emacs versions of <assert.h>'s 'assert (COND)' and <verify.h>'s
'assume (COND)'. COND should be free of side effects, as it may or
may not be evaluated.
'eassert (COND)' checks COND at runtime if ENABLE_CHECKING is
defined and suppress_checking is false, and does nothing otherwise.
Emacs dies if COND is checked and is false. The suppress_checking
variable is initialized to 0 in alloc.c. Set it to 1 using a
debugger to temporarily disable aborting on detected internal
inconsistencies or error conditions.
In some cases, a good compiler may be able to optimize away the
eassert macro even if ENABLE_CHECKING is true, e.g., if XSTRING (x)
uses eassert to test STRINGP (x), but a particular use of XSTRING
is invoked only after testing that STRINGP (x) is true, making the
test redundant.
eassume is like eassert except that it also causes the compiler to
assume that COND is true afterwards, regardless of whether runtime
checking is enabled. This can improve performance in some cases,
though it can degrade performance in others. It's often suboptimal
for COND to call external functions or access volatile storage. */
#ifndef ENABLE_CHECKING
# define eassert(cond) ((void) (false && (cond))) /* Check COND compiles. */
# define eassume(cond) assume (cond)
#else /* ENABLE_CHECKING */
extern _Noreturn void die (const char *, const char *, int);
extern bool suppress_checking EXTERNALLY_VISIBLE;
# define eassert(cond) \
(suppress_checking || (cond) \
? (void) 0 \
: die (# cond, __FILE__, __LINE__))
# define eassume(cond) \
(suppress_checking \
? assume (cond) \
: (cond) \
? (void) 0 \
: die (# cond, __FILE__, __LINE__))
#endif /* ENABLE_CHECKING */
\f
/* Use the configure flag --enable-check-lisp-object-type to make
Lisp_Object use a struct type instead of the default int. The flag
causes CHECK_LISP_OBJECT_TYPE to be defined. */
/***** Select the tagging scheme. *****/
/* The following option controls the tagging scheme:
- USE_LSB_TAG means that we can assume the least 3 bits of pointers are
always 0, and we can thus use them to hold tag bits, without
restricting our addressing space.
If ! USE_LSB_TAG, then use the top 3 bits for tagging, thus
restricting our possible address range.
USE_LSB_TAG not only requires the least 3 bits of pointers returned by
malloc to be 0 but also needs to be able to impose a mult-of-8 alignment
on the few static Lisp_Objects used: lispsym, all the defsubr, and
the two special buffers buffer_defaults and buffer_local_symbols. */
enum Lisp_Bits
{
/* 2**GCTYPEBITS. This must be a macro that expands to a literal
integer constant, for MSVC. */
#define GCALIGNMENT 8
/* Number of bits in a Lisp_Object value, not counting the tag. */
VALBITS = BITS_PER_EMACS_INT - GCTYPEBITS,
/* Number of bits in a Lisp fixnum tag. */
INTTYPEBITS = GCTYPEBITS - 1,
/* Number of bits in a Lisp fixnum value, not counting the tag. */
FIXNUM_BITS = VALBITS + 1
};
#if GCALIGNMENT != 1 << GCTYPEBITS
# error "GCALIGNMENT and GCTYPEBITS are inconsistent"
#endif
/* The maximum value that can be stored in a EMACS_INT, assuming all
bits other than the type bits contribute to a nonnegative signed value.
This can be used in #if, e.g., '#if USB_TAG' below expands to an
expression involving VAL_MAX. */
#define VAL_MAX (EMACS_INT_MAX >> (GCTYPEBITS - 1))
/* Whether the least-significant bits of an EMACS_INT contain the tag.
On hosts where pointers-as-ints do not exceed VAL_MAX / 2, USE_LSB_TAG is:
a. unnecessary, because the top bits of an EMACS_INT are unused, and
b. slower, because it typically requires extra masking.
So, USE_LSB_TAG is true only on hosts where it might be useful. */
DEFINE_GDB_SYMBOL_BEGIN (bool, USE_LSB_TAG)
#define USE_LSB_TAG (VAL_MAX / 2 < INTPTR_MAX)
DEFINE_GDB_SYMBOL_END (USE_LSB_TAG)
#if !USE_LSB_TAG && !defined WIDE_EMACS_INT
# error "USE_LSB_TAG not supported on this platform; please report this." \
"Try 'configure --with-wide-int' to work around the problem."
error !;
#endif
#ifndef alignas
# define alignas(alignment) /* empty */
# if USE_LSB_TAG
# error "USE_LSB_TAG requires alignas"
# endif
#endif
#ifdef HAVE_STRUCT_ATTRIBUTE_ALIGNED
# define GCALIGNED __attribute__ ((aligned (GCALIGNMENT)))
#else
# define GCALIGNED /* empty */
#endif
/* Some operations are so commonly executed that they are implemented
as macros, not functions, because otherwise runtime performance would
suffer too much when compiling with GCC without optimization.
There's no need to inline everything, just the operations that
would otherwise cause a serious performance problem.
For each such operation OP, define a macro lisp_h_OP that contains
the operation's implementation. That way, OP can be implemented
via a macro definition like this:
#define OP(x) lisp_h_OP (x)
and/or via a function definition like this:
LISP_MACRO_DEFUN (OP, Lisp_Object, (Lisp_Object x), (x))
which macro-expands to this:
Lisp_Object (OP) (Lisp_Object x) { return lisp_h_OP (x); }
without worrying about the implementations diverging, since
lisp_h_OP defines the actual implementation. The lisp_h_OP macros
are intended to be private to this include file, and should not be
used elsewhere.
FIXME: Remove the lisp_h_OP macros, and define just the inline OP
functions, once most developers have access to GCC 4.8 or later and
can use "gcc -Og" to debug. Maybe in the year 2016. See
Bug#11935.
Commentary for these macros can be found near their corresponding
functions, below. */
#if CHECK_LISP_OBJECT_TYPE
# define lisp_h_XLI(o) ((o).i)
# define lisp_h_XIL(i) ((Lisp_Object) { i })
#else
# define lisp_h_XLI(o) (o)
# define lisp_h_XIL(i) (i)
#endif
#define lisp_h_CHECK_LIST_CONS(x, y) CHECK_TYPE (CONSP (x), Qlistp, y)
#define lisp_h_CHECK_NUMBER(x) CHECK_TYPE (INTEGERP (x), Qintegerp, x)
#define lisp_h_CHECK_SYMBOL(x) CHECK_TYPE (SYMBOLP (x), Qsymbolp, x)
#define lisp_h_CHECK_TYPE(ok, predicate, x) \
((ok) ? (void) 0 : (void) wrong_type_argument (predicate, x))
#define lisp_h_CONSP(x) (XTYPE (x) == Lisp_Cons)
#define lisp_h_EQ(x, y) (XLI (x) == XLI (y))
#define lisp_h_FLOATP(x) (XTYPE (x) == Lisp_Float)
#define lisp_h_INTEGERP(x) ((XTYPE (x) & (Lisp_Int0 | ~Lisp_Int1)) == Lisp_Int0)
#define lisp_h_MARKERP(x) (MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Marker)
#define lisp_h_MISCP(x) (XTYPE (x) == Lisp_Misc)
#define lisp_h_NILP(x) EQ (x, Qnil)
#define lisp_h_SET_SYMBOL_VAL(sym, v) \
(eassert ((sym)->redirect == SYMBOL_PLAINVAL), (sym)->val.value = (v))
#define lisp_h_SYMBOL_CONSTANT_P(sym) (XSYMBOL (sym)->constant)
#define lisp_h_SYMBOL_VAL(sym) \
(eassert ((sym)->redirect == SYMBOL_PLAINVAL), (sym)->val.value)
#define lisp_h_SYMBOLP(x) (XTYPE (x) == Lisp_Symbol)
#define lisp_h_VECTORLIKEP(x) (XTYPE (x) == Lisp_Vectorlike)
#define lisp_h_XCAR(c) XCONS (c)->car
#define lisp_h_XCDR(c) XCONS (c)->u.cdr
#define lisp_h_XCONS(a) \
(eassert (CONSP (a)), (struct Lisp_Cons *) XUNTAG (a, Lisp_Cons))
#define lisp_h_XHASH(a) XUINT (a)
#define lisp_h_XPNTR(a) \
(SYMBOLP (a) ? XSYMBOL (a) : (void *) ((intptr_t) (XLI (a) & VALMASK)))
#ifndef GC_CHECK_CONS_LIST
# define lisp_h_check_cons_list() ((void) 0)
#endif
#if USE_LSB_TAG
# define lisp_h_make_number(n) \
XIL ((EMACS_INT) (((EMACS_UINT) (n) << INTTYPEBITS) + Lisp_Int0))
# define lisp_h_XFASTINT(a) XINT (a)
# define lisp_h_XINT(a) (XLI (a) >> INTTYPEBITS)
# define lisp_h_XSYMBOL(a) \
(eassert (SYMBOLP (a)), \
(struct Lisp_Symbol *) ((uintptr_t) XLI (a) - Lisp_Symbol \
+ (char *) lispsym))
# define lisp_h_XTYPE(a) ((enum Lisp_Type) (XLI (a) & ~VALMASK))
# define lisp_h_XUNTAG(a, type) ((void *) (intptr_t) (XLI (a) - (type)))
#endif
/* When compiling via gcc -O0, define the key operations as macros, as
Emacs is too slow otherwise. To disable this optimization, compile
with -DINLINING=false. */
#if (defined __NO_INLINE__ \
&& ! defined __OPTIMIZE__ && ! defined __OPTIMIZE_SIZE__ \
&& ! (defined INLINING && ! INLINING))
# define XLI(o) lisp_h_XLI (o)
# define XIL(i) lisp_h_XIL (i)
# define CHECK_LIST_CONS(x, y) lisp_h_CHECK_LIST_CONS (x, y)
# define CHECK_NUMBER(x) lisp_h_CHECK_NUMBER (x)
# define CHECK_SYMBOL(x) lisp_h_CHECK_SYMBOL (x)
# define CHECK_TYPE(ok, predicate, x) lisp_h_CHECK_TYPE (ok, predicate, x)
# define CONSP(x) lisp_h_CONSP (x)
# define EQ(x, y) lisp_h_EQ (x, y)
# define FLOATP(x) lisp_h_FLOATP (x)
# define INTEGERP(x) lisp_h_INTEGERP (x)
# define MARKERP(x) lisp_h_MARKERP (x)
# define MISCP(x) lisp_h_MISCP (x)
# define NILP(x) lisp_h_NILP (x)
# define SET_SYMBOL_VAL(sym, v) lisp_h_SET_SYMBOL_VAL (sym, v)
# define SYMBOL_CONSTANT_P(sym) lisp_h_SYMBOL_CONSTANT_P (sym)
# define SYMBOL_VAL(sym) lisp_h_SYMBOL_VAL (sym)
# define SYMBOLP(x) lisp_h_SYMBOLP (x)
# define VECTORLIKEP(x) lisp_h_VECTORLIKEP (x)
# define XCAR(c) lisp_h_XCAR (c)
# define XCDR(c) lisp_h_XCDR (c)
# define XCONS(a) lisp_h_XCONS (a)
# define XHASH(a) lisp_h_XHASH (a)
# define XPNTR(a) lisp_h_XPNTR (a)
# ifndef GC_CHECK_CONS_LIST
# define check_cons_list() lisp_h_check_cons_list ()
# endif
# if USE_LSB_TAG
# define make_number(n) lisp_h_make_number (n)
# define XFASTINT(a) lisp_h_XFASTINT (a)
# define XINT(a) lisp_h_XINT (a)
# define XSYMBOL(a) lisp_h_XSYMBOL (a)
# define XTYPE(a) lisp_h_XTYPE (a)
# define XUNTAG(a, type) lisp_h_XUNTAG (a, type)
# endif
#endif
/* Define NAME as a lisp.h inline function that returns TYPE and has
arguments declared as ARGDECLS and passed as ARGS. ARGDECLS and
ARGS should be parenthesized. Implement the function by calling
lisp_h_NAME ARGS. */
#define LISP_MACRO_DEFUN(name, type, argdecls, args) \
INLINE type (name) argdecls { return lisp_h_##name args; }
/* like LISP_MACRO_DEFUN, except NAME returns void. */
#define LISP_MACRO_DEFUN_VOID(name, argdecls, args) \
INLINE void (name) argdecls { lisp_h_##name args; }
/* Define the fundamental Lisp data structures. */
/* This is the set of Lisp data types. If you want to define a new
data type, read the comments after Lisp_Fwd_Type definition
below. */
/* Lisp integers use 2 tags, to give them one extra bit, thus
extending their range from, e.g., -2^28..2^28-1 to -2^29..2^29-1. */
#define INTMASK (EMACS_INT_MAX >> (INTTYPEBITS - 1))
#define case_Lisp_Int case Lisp_Int0: case Lisp_Int1
/* Idea stolen from GDB. Pedantic GCC complains about enum bitfields,
MSVC doesn't support them, and xlc and Oracle Studio c99 complain
vociferously about them. */
#if (defined __STRICT_ANSI__ || defined _MSC_VER || defined __IBMC__ \
|| (defined __SUNPRO_C && __STDC__))
#define ENUM_BF(TYPE) unsigned int
#else
#define ENUM_BF(TYPE) enum TYPE
#endif
enum Lisp_Type
{
/* Symbol. XSYMBOL (object) points to a struct Lisp_Symbol. */
Lisp_Symbol = 0,
/* Miscellaneous. XMISC (object) points to a union Lisp_Misc,
whose first member indicates the subtype. */
Lisp_Misc = 1,
/* Integer. XINT (obj) is the integer value. */
Lisp_Int0 = 2,
Lisp_Int1 = USE_LSB_TAG ? 6 : 3,
/* String. XSTRING (object) points to a struct Lisp_String.
The length of the string, and its contents, are stored therein. */
Lisp_String = 4,
/* Vector of Lisp objects, or something resembling it.
XVECTOR (object) points to a struct Lisp_Vector, which contains
the size and contents. The size field also contains the type
information, if it's not a real vector object. */
Lisp_Vectorlike = 5,
/* Cons. XCONS (object) points to a struct Lisp_Cons. */
Lisp_Cons = USE_LSB_TAG ? 3 : 6,
Lisp_Float = 7
};
/* This is the set of data types that share a common structure.
The first member of the structure is a type code from this set.
The enum values are arbitrary, but we'll use large numbers to make it
more likely that we'll spot the error if a random word in memory is
mistakenly interpreted as a Lisp_Misc. */
enum Lisp_Misc_Type
{
Lisp_Misc_Free = 0x5eab,
Lisp_Misc_Marker,
Lisp_Misc_Overlay,
Lisp_Misc_Save_Value,
Lisp_Misc_Finalizer,
/* Currently floats are not a misc type,
but let's define this in case we want to change that. */
Lisp_Misc_Float,
/* This is not a type code. It is for range checking. */
Lisp_Misc_Limit
};
/* These are the types of forwarding objects used in the value slot
of symbols for special built-in variables whose value is stored in
C variables. */
enum Lisp_Fwd_Type
{
Lisp_Fwd_Int, /* Fwd to a C `int' variable. */
Lisp_Fwd_Bool, /* Fwd to a C boolean var. */
Lisp_Fwd_Obj, /* Fwd to a C Lisp_Object variable. */
Lisp_Fwd_Buffer_Obj, /* Fwd to a Lisp_Object field of buffers. */
Lisp_Fwd_Kboard_Obj /* Fwd to a Lisp_Object field of kboards. */
};
/* If you want to define a new Lisp data type, here are some
instructions. See the thread at
http://lists.gnu.org/archive/html/emacs-devel/2012-10/msg00561.html
for more info.
First, there are already a couple of Lisp types that can be used if
your new type does not need to be exposed to Lisp programs nor
displayed to users. These are Lisp_Save_Value, a Lisp_Misc
subtype; and PVEC_OTHER, a kind of vectorlike object. The former
is suitable for temporarily stashing away pointers and integers in
a Lisp object. The latter is useful for vector-like Lisp objects
that need to be used as part of other objects, but which are never
shown to users or Lisp code (search for PVEC_OTHER in xterm.c for
an example).
These two types don't look pretty when printed, so they are
unsuitable for Lisp objects that can be exposed to users.
To define a new data type, add one more Lisp_Misc subtype or one
more pseudovector subtype. Pseudovectors are more suitable for
objects with several slots that need to support fast random access,
while Lisp_Misc types are for everything else. A pseudovector object
provides one or more slots for Lisp objects, followed by struct
members that are accessible only from C. A Lisp_Misc object is a
wrapper for a C struct that can contain anything you like.
Explicit freeing is discouraged for Lisp objects in general. But if
you really need to exploit this, use Lisp_Misc (check free_misc in
alloc.c to see why). There is no way to free a vectorlike object.
To add a new pseudovector type, extend the pvec_type enumeration;
to add a new Lisp_Misc, extend the Lisp_Misc_Type enumeration.
For a Lisp_Misc, you will also need to add your entry to union
Lisp_Misc (but make sure the first word has the same structure as
the others, starting with a 16-bit member of the Lisp_Misc_Type
enumeration and a 1-bit GC markbit) and make sure the overall size
of the union is not increased by your addition.
For a new pseudovector, it's highly desirable to limit the size
of your data type by VBLOCK_BYTES_MAX bytes (defined in alloc.c).
Otherwise you will need to change sweep_vectors (also in alloc.c).
Then you will need to add switch branches in print.c (in
print_object, to print your object, and possibly also in
print_preprocess) and to alloc.c, to mark your object (in
mark_object) and to free it (in gc_sweep). The latter is also the
right place to call any code specific to your data type that needs
to run when the object is recycled -- e.g., free any additional
resources allocated for it that are not Lisp objects. You can even
make a pointer to the function that frees the resources a slot in
your object -- this way, the same object could be used to represent
several disparate C structures. */
#ifdef CHECK_LISP_OBJECT_TYPE
typedef struct { EMACS_INT i; } Lisp_Object;
#define LISP_INITIALLY(i) {i}
#undef CHECK_LISP_OBJECT_TYPE
enum CHECK_LISP_OBJECT_TYPE { CHECK_LISP_OBJECT_TYPE = true };
#else /* CHECK_LISP_OBJECT_TYPE */
/* If a struct type is not wanted, define Lisp_Object as just a number. */
typedef EMACS_INT Lisp_Object;
#define LISP_INITIALLY(i) (i)
enum CHECK_LISP_OBJECT_TYPE { CHECK_LISP_OBJECT_TYPE = false };
#endif /* CHECK_LISP_OBJECT_TYPE */
#define LISP_INITIALLY_ZERO LISP_INITIALLY (0)
\f
/* Forward declarations. */
/* Defined in this file. */
union Lisp_Fwd;
INLINE bool BOOL_VECTOR_P (Lisp_Object);
INLINE bool BUFFER_OBJFWDP (union Lisp_Fwd *);
INLINE bool BUFFERP (Lisp_Object);
INLINE bool CHAR_TABLE_P (Lisp_Object);
INLINE Lisp_Object CHAR_TABLE_REF_ASCII (Lisp_Object, ptrdiff_t);
INLINE bool (CONSP) (Lisp_Object);
INLINE bool (FLOATP) (Lisp_Object);
INLINE bool functionp (Lisp_Object);
INLINE bool (INTEGERP) (Lisp_Object);
INLINE bool (MARKERP) (Lisp_Object);
INLINE bool (MISCP) (Lisp_Object);
INLINE bool (NILP) (Lisp_Object);
INLINE bool OVERLAYP (Lisp_Object);
INLINE bool PROCESSP (Lisp_Object);
INLINE bool PSEUDOVECTORP (Lisp_Object, int);
INLINE bool SAVE_VALUEP (Lisp_Object);
INLINE bool FINALIZERP (Lisp_Object);
INLINE void set_sub_char_table_contents (Lisp_Object, ptrdiff_t,
Lisp_Object);
INLINE bool STRINGP (Lisp_Object);
INLINE bool SUB_CHAR_TABLE_P (Lisp_Object);
INLINE bool SUBRP (Lisp_Object);
INLINE bool (SYMBOLP) (Lisp_Object);
INLINE bool (VECTORLIKEP) (Lisp_Object);
INLINE bool WINDOWP (Lisp_Object);
INLINE bool TERMINALP (Lisp_Object);
INLINE struct Lisp_Save_Value *XSAVE_VALUE (Lisp_Object);
INLINE struct Lisp_Finalizer *XFINALIZER (Lisp_Object);
INLINE struct Lisp_Symbol *(XSYMBOL) (Lisp_Object);
INLINE void *(XUNTAG) (Lisp_Object, int);
/* Defined in chartab.c. */
extern Lisp_Object char_table_ref (Lisp_Object, int);
extern void char_table_set (Lisp_Object, int, Lisp_Object);
/* Defined in data.c. */
extern _Noreturn Lisp_Object wrong_type_argument (Lisp_Object, Lisp_Object);
extern _Noreturn void wrong_choice (Lisp_Object, Lisp_Object);
/* Defined in emacs.c. */
extern bool might_dump;
/* True means Emacs has already been initialized.
Used during startup to detect startup of dumped Emacs. */
extern bool initialized;
/* Defined in floatfns.c. */
extern double extract_float (Lisp_Object);
\f
/* Interned state of a symbol. */
enum symbol_interned
{
SYMBOL_UNINTERNED = 0,
SYMBOL_INTERNED = 1,
SYMBOL_INTERNED_IN_INITIAL_OBARRAY = 2
};
enum symbol_redirect
{
SYMBOL_PLAINVAL = 4,
SYMBOL_VARALIAS = 1,
SYMBOL_LOCALIZED = 2,
SYMBOL_FORWARDED = 3
};
struct Lisp_Symbol
{
bool_bf gcmarkbit : 1;
/* Indicates where the value can be found:
0 : it's a plain var, the value is in the `value' field.
1 : it's a varalias, the value is really in the `alias' symbol.
2 : it's a localized var, the value is in the `blv' object.
3 : it's a forwarding variable, the value is in `forward'. */
ENUM_BF (symbol_redirect) redirect : 3;
/* Non-zero means symbol is constant, i.e. changing its value
should signal an error. If the value is 3, then the var
can be changed, but only by `defconst'. */
unsigned constant : 2;
/* Interned state of the symbol. This is an enumerator from
enum symbol_interned. */
unsigned interned : 2;
/* True means that this variable has been explicitly declared
special (with `defvar' etc), and shouldn't be lexically bound. */
bool_bf declared_special : 1;
/* True if pointed to from purespace and hence can't be GC'd. */
bool_bf pinned : 1;
/* The symbol's name, as a Lisp string. */
Lisp_Object name;
/* Value of the symbol or Qunbound if unbound. Which alternative of the
union is used depends on the `redirect' field above. */
union {
Lisp_Object value;
struct Lisp_Symbol *alias;
struct Lisp_Buffer_Local_Value *blv;
union Lisp_Fwd *fwd;
} val;
/* Function value of the symbol or Qnil if not fboundp. */
Lisp_Object function;
/* The symbol's property list. */
Lisp_Object plist;
/* Next symbol in obarray bucket, if the symbol is interned. */
struct Lisp_Symbol *next;
};
/* Declare a Lisp-callable function. The MAXARGS parameter has the same
meaning as in the DEFUN macro, and is used to construct a prototype. */
/* We can use the same trick as in the DEFUN macro to generate the
appropriate prototype. */
#define EXFUN(fnname, maxargs) \
extern Lisp_Object fnname DEFUN_ARGS_ ## maxargs
/* Note that the weird token-substitution semantics of ANSI C makes
this work for MANY and UNEVALLED. */
#define DEFUN_ARGS_MANY (ptrdiff_t, Lisp_Object *)
#define DEFUN_ARGS_UNEVALLED (Lisp_Object)
#define DEFUN_ARGS_0 (void)
#define DEFUN_ARGS_1 (Lisp_Object)
#define DEFUN_ARGS_2 (Lisp_Object, Lisp_Object)
#define DEFUN_ARGS_3 (Lisp_Object, Lisp_Object, Lisp_Object)
#define DEFUN_ARGS_4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object)
#define DEFUN_ARGS_5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
Lisp_Object)
#define DEFUN_ARGS_6 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
Lisp_Object, Lisp_Object)
#define DEFUN_ARGS_7 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
Lisp_Object, Lisp_Object, Lisp_Object)
#define DEFUN_ARGS_8 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object)
/* Yield an integer that contains TAG along with PTR. */
#define TAG_PTR(tag, ptr) \
((USE_LSB_TAG ? (tag) : (EMACS_UINT) (tag) << VALBITS) + (uintptr_t) (ptr))
/* Yield an integer that contains a symbol tag along with OFFSET.
OFFSET should be the offset in bytes from 'lispsym' to the symbol. */
#define TAG_SYMOFFSET(offset) \
TAG_PTR (Lisp_Symbol, \
((uintptr_t) (offset) >> (USE_LSB_TAG ? 0 : GCTYPEBITS)))
/* XLI_BUILTIN_LISPSYM (iQwhatever) is equivalent to
XLI (builtin_lisp_symbol (Qwhatever)),
except the former expands to an integer constant expression. */
#define XLI_BUILTIN_LISPSYM(iname) TAG_SYMOFFSET ((iname) * sizeof *lispsym)
/* Declare extern constants for Lisp symbols. These can be helpful
when using a debugger like GDB, on older platforms where the debug
format does not represent C macros. */
#define DEFINE_LISP_SYMBOL(name) \
DEFINE_GDB_SYMBOL_BEGIN (Lisp_Object, name) \
DEFINE_GDB_SYMBOL_END (LISP_INITIALLY (XLI_BUILTIN_LISPSYM (i##name)))
/* By default, define macros for Qt, etc., as this leads to a bit
better performance in the core Emacs interpreter. A plugin can
define DEFINE_NON_NIL_Q_SYMBOL_MACROS to be false, to be portable to
other Emacs instances that assign different values to Qt, etc. */
#ifndef DEFINE_NON_NIL_Q_SYMBOL_MACROS
# define DEFINE_NON_NIL_Q_SYMBOL_MACROS true
#endif
#include "globals.h"
/* Convert a Lisp_Object to the corresponding EMACS_INT and vice versa.
At the machine level, these operations are no-ops. */
LISP_MACRO_DEFUN (XLI, EMACS_INT, (Lisp_Object o), (o))
LISP_MACRO_DEFUN (XIL, Lisp_Object, (EMACS_INT i), (i))
/* In the size word of a vector, this bit means the vector has been marked. */
DEFINE_GDB_SYMBOL_BEGIN (ptrdiff_t, ARRAY_MARK_FLAG)
# define ARRAY_MARK_FLAG PTRDIFF_MIN
DEFINE_GDB_SYMBOL_END (ARRAY_MARK_FLAG)
/* In the size word of a struct Lisp_Vector, this bit means it's really
some other vector-like object. */
DEFINE_GDB_SYMBOL_BEGIN (ptrdiff_t, PSEUDOVECTOR_FLAG)
# define PSEUDOVECTOR_FLAG (PTRDIFF_MAX - PTRDIFF_MAX / 2)
DEFINE_GDB_SYMBOL_END (PSEUDOVECTOR_FLAG)
/* In a pseudovector, the size field actually contains a word with one
PSEUDOVECTOR_FLAG bit set, and one of the following values extracted
with PVEC_TYPE_MASK to indicate the actual type. */
enum pvec_type
{
PVEC_NORMAL_VECTOR,
PVEC_FREE,
PVEC_PROCESS,
PVEC_FRAME,
PVEC_WINDOW,
PVEC_BOOL_VECTOR,
PVEC_BUFFER,
PVEC_HASH_TABLE,
PVEC_TERMINAL,
PVEC_WINDOW_CONFIGURATION,
PVEC_SUBR,
PVEC_OTHER,
/* These should be last, check internal_equal to see why. */
PVEC_COMPILED,
PVEC_CHAR_TABLE,
PVEC_SUB_CHAR_TABLE,
PVEC_FONT /* Should be last because it's used for range checking. */
};
enum More_Lisp_Bits
{
/* For convenience, we also store the number of elements in these bits.
Note that this size is not necessarily the memory-footprint size, but
only the number of Lisp_Object fields (that need to be traced by GC).
The distinction is used, e.g., by Lisp_Process, which places extra
non-Lisp_Object fields at the end of the structure. */
PSEUDOVECTOR_SIZE_BITS = 12,
PSEUDOVECTOR_SIZE_MASK = (1 << PSEUDOVECTOR_SIZE_BITS) - 1,
/* To calculate the memory footprint of the pseudovector, it's useful
to store the size of non-Lisp area in word_size units here. */
PSEUDOVECTOR_REST_BITS = 12,
PSEUDOVECTOR_REST_MASK = (((1 << PSEUDOVECTOR_REST_BITS) - 1)
<< PSEUDOVECTOR_SIZE_BITS),
/* Used to extract pseudovector subtype information. */
PSEUDOVECTOR_AREA_BITS = PSEUDOVECTOR_SIZE_BITS + PSEUDOVECTOR_REST_BITS,
PVEC_TYPE_MASK = 0x3f << PSEUDOVECTOR_AREA_BITS
};
\f
/* These functions extract various sorts of values from a Lisp_Object.
For example, if tem is a Lisp_Object whose type is Lisp_Cons,
XCONS (tem) is the struct Lisp_Cons * pointing to the memory for
that cons. */
/* Mask for the value (as opposed to the type bits) of a Lisp object. */
DEFINE_GDB_SYMBOL_BEGIN (EMACS_INT, VALMASK)
# define VALMASK (USE_LSB_TAG ? - (1 << GCTYPEBITS) : VAL_MAX)
DEFINE_GDB_SYMBOL_END (VALMASK)
/* Largest and smallest representable fixnum values. These are the C
values. They are macros for use in static initializers. */
#define MOST_POSITIVE_FIXNUM (EMACS_INT_MAX >> INTTYPEBITS)
#define MOST_NEGATIVE_FIXNUM (-1 - MOST_POSITIVE_FIXNUM)
#if USE_LSB_TAG
LISP_MACRO_DEFUN (make_number, Lisp_Object, (EMACS_INT n), (n))
LISP_MACRO_DEFUN (XINT, EMACS_INT, (Lisp_Object a), (a))
LISP_MACRO_DEFUN (XFASTINT, EMACS_INT, (Lisp_Object a), (a))
LISP_MACRO_DEFUN (XSYMBOL, struct Lisp_Symbol *, (Lisp_Object a), (a))
LISP_MACRO_DEFUN (XTYPE, enum Lisp_Type, (Lisp_Object a), (a))
LISP_MACRO_DEFUN (XUNTAG, void *, (Lisp_Object a, int type), (a, type))
#else /* ! USE_LSB_TAG */
/* Although compiled only if ! USE_LSB_TAG, the following functions
also work when USE_LSB_TAG; this is to aid future maintenance when
the lisp_h_* macros are eventually removed. */
/* Make a Lisp integer representing the value of the low order
bits of N. */
INLINE Lisp_Object
make_number (EMACS_INT n)
{
EMACS_INT int0 = Lisp_Int0;
if (USE_LSB_TAG)
{
EMACS_UINT u = n;
n = u << INTTYPEBITS;
n += int0;
}
else
{
n &= INTMASK;
n += (int0 << VALBITS);
}
return XIL (n);
}
/* Extract A's value as a signed integer. */
INLINE EMACS_INT
XINT (Lisp_Object a)
{
EMACS_INT i = XLI (a);
if (! USE_LSB_TAG)
{
EMACS_UINT u = i;
i = u << INTTYPEBITS;
}
return i >> INTTYPEBITS;
}
/* Like XINT (A), but may be faster. A must be nonnegative.
If ! USE_LSB_TAG, this takes advantage of the fact that Lisp
integers have zero-bits in their tags. */
INLINE EMACS_INT
XFASTINT (Lisp_Object a)
{
EMACS_INT int0 = Lisp_Int0;
EMACS_INT n = USE_LSB_TAG ? XINT (a) : XLI (a) - (int0 << VALBITS);
eassert (0 <= n);
return n;
}
/* Extract A's value as a symbol. */
INLINE struct Lisp_Symbol *
XSYMBOL (Lisp_Object a)
{
uintptr_t i = (uintptr_t) XUNTAG (a, Lisp_Symbol);
if (! USE_LSB_TAG)
i <<= GCTYPEBITS;
void *p = (char *) lispsym + i;
return p;
}
/* Extract A's type. */
INLINE enum Lisp_Type
XTYPE (Lisp_Object a)
{
EMACS_UINT i = XLI (a);
return USE_LSB_TAG ? i & ~VALMASK : i >> VALBITS;
}
/* Extract A's pointer value, assuming A's type is TYPE. */
INLINE void *
XUNTAG (Lisp_Object a, int type)
{
intptr_t i = USE_LSB_TAG ? XLI (a) - type : XLI (a) & VALMASK;
return (void *) i;
}
#endif /* ! USE_LSB_TAG */
/* Extract the pointer hidden within A. */
LISP_MACRO_DEFUN (XPNTR, void *, (Lisp_Object a), (a))
/* Extract A's value as an unsigned integer. */
INLINE EMACS_UINT
XUINT (Lisp_Object a)
{
EMACS_UINT i = XLI (a);
return USE_LSB_TAG ? i >> INTTYPEBITS : i & INTMASK;
}
/* Return A's (Lisp-integer sized) hash. Happens to be like XUINT
right now, but XUINT should only be applied to objects we know are
integers. */
LISP_MACRO_DEFUN (XHASH, EMACS_INT, (Lisp_Object a), (a))
/* Like make_number (N), but may be faster. N must be in nonnegative range. */
INLINE Lisp_Object
make_natnum (EMACS_INT n)
{
eassert (0 <= n && n <= MOST_POSITIVE_FIXNUM);
EMACS_INT int0 = Lisp_Int0;
return USE_LSB_TAG ? make_number (n) : XIL (n + (int0 << VALBITS));
}
/* Return true if X and Y are the same object. */
LISP_MACRO_DEFUN (EQ, bool, (Lisp_Object x, Lisp_Object y), (x, y))
/* Value is true if I doesn't fit into a Lisp fixnum. It is
written this way so that it also works if I is of unsigned
type or if I is a NaN. */
#define FIXNUM_OVERFLOW_P(i) \
(! ((0 <= (i) || MOST_NEGATIVE_FIXNUM <= (i)) && (i) <= MOST_POSITIVE_FIXNUM))
INLINE ptrdiff_t
clip_to_bounds (ptrdiff_t lower, EMACS_INT num, ptrdiff_t upper)
{
return num < lower ? lower : num <= upper ? num : upper;
}
\f
/* Extract a value or address from a Lisp_Object. */
LISP_MACRO_DEFUN (XCONS, struct Lisp_Cons *, (Lisp_Object a), (a))
INLINE struct Lisp_Vector *
XVECTOR (Lisp_Object a)
{
eassert (VECTORLIKEP (a));
return XUNTAG (a, Lisp_Vectorlike);
}
INLINE struct Lisp_String *
XSTRING (Lisp_Object a)
{
eassert (STRINGP (a));
return XUNTAG (a, Lisp_String);
}
/* The index of the C-defined Lisp symbol SYM.
This can be used in a static initializer. */
#define SYMBOL_INDEX(sym) i##sym
INLINE struct Lisp_Float *
XFLOAT (Lisp_Object a)
{
eassert (FLOATP (a));
return XUNTAG (a, Lisp_Float);
}
/* Pseudovector types. */
INLINE struct Lisp_Process *
XPROCESS (Lisp_Object a)
{
eassert (PROCESSP (a));
return XUNTAG (a, Lisp_Vectorlike);
}
INLINE struct window *
XWINDOW (Lisp_Object a)
{
eassert (WINDOWP (a));
return XUNTAG (a, Lisp_Vectorlike);
}
INLINE struct terminal *
XTERMINAL (Lisp_Object a)
{
eassert (TERMINALP (a));
return XUNTAG (a, Lisp_Vectorlike);
}
INLINE struct Lisp_Subr *
XSUBR (Lisp_Object a)
{
eassert (SUBRP (a));
return XUNTAG (a, Lisp_Vectorlike);
}
INLINE struct buffer *
XBUFFER (Lisp_Object a)
{
eassert (BUFFERP (a));
return XUNTAG (a, Lisp_Vectorlike);
}
INLINE struct Lisp_Char_Table *
XCHAR_TABLE (Lisp_Object a)
{
eassert (CHAR_TABLE_P (a));
return XUNTAG (a, Lisp_Vectorlike);
}
INLINE struct Lisp_Sub_Char_Table *
XSUB_CHAR_TABLE (Lisp_Object a)
{
eassert (SUB_CHAR_TABLE_P (a));
return XUNTAG (a, Lisp_Vectorlike);
}
INLINE struct Lisp_Bool_Vector *
XBOOL_VECTOR (Lisp_Object a)
{
eassert (BOOL_VECTOR_P (a));
return XUNTAG (a, Lisp_Vectorlike);
}
/* Construct a Lisp_Object from a value or address. */
INLINE Lisp_Object
make_lisp_ptr (void *ptr, enum Lisp_Type type)
{
Lisp_Object a = XIL (TAG_PTR (type, ptr));
eassert (XTYPE (a) == type && XUNTAG (a, type) == ptr);
return a;
}
INLINE Lisp_Object
make_lisp_symbol (struct Lisp_Symbol *sym)
{
Lisp_Object a = XIL (TAG_SYMOFFSET ((char *) sym - (char *) lispsym));
eassert (XSYMBOL (a) == sym);
return a;
}
INLINE Lisp_Object
builtin_lisp_symbol (int index)
{
return make_lisp_symbol (lispsym + index);
}
#define XSETINT(a, b) ((a) = make_number (b))
#define XSETFASTINT(a, b) ((a) = make_natnum (b))
#define XSETCONS(a, b) ((a) = make_lisp_ptr (b, Lisp_Cons))
#define XSETVECTOR(a, b) ((a) = make_lisp_ptr (b, Lisp_Vectorlike))
#define XSETSTRING(a, b) ((a) = make_lisp_ptr (b, Lisp_String))
#define XSETSYMBOL(a, b) ((a) = make_lisp_symbol (b))
#define XSETFLOAT(a, b) ((a) = make_lisp_ptr (b, Lisp_Float))
#define XSETMISC(a, b) ((a) = make_lisp_ptr (b, Lisp_Misc))
/* Pseudovector types. */
#define XSETPVECTYPE(v, code) \
((v)->header.size |= PSEUDOVECTOR_FLAG | ((code) << PSEUDOVECTOR_AREA_BITS))
#define XSETPVECTYPESIZE(v, code, lispsize, restsize) \
((v)->header.size = (PSEUDOVECTOR_FLAG \
| ((code) << PSEUDOVECTOR_AREA_BITS) \
| ((restsize) << PSEUDOVECTOR_SIZE_BITS) \
| (lispsize)))
/* The cast to struct vectorlike_header * avoids aliasing issues. */
#define XSETPSEUDOVECTOR(a, b, code) \
XSETTYPED_PSEUDOVECTOR (a, b, \
(((struct vectorlike_header *) \
XUNTAG (a, Lisp_Vectorlike)) \
->size), \
code)
#define XSETTYPED_PSEUDOVECTOR(a, b, size, code) \
(XSETVECTOR (a, b), \
eassert ((size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK)) \
== (PSEUDOVECTOR_FLAG | (code << PSEUDOVECTOR_AREA_BITS))))
#define XSETWINDOW_CONFIGURATION(a, b) \
(XSETPSEUDOVECTOR (a, b, PVEC_WINDOW_CONFIGURATION))
#define XSETPROCESS(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_PROCESS))
#define XSETWINDOW(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_WINDOW))
#define XSETTERMINAL(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_TERMINAL))
#define XSETSUBR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUBR))
#define XSETCOMPILED(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_COMPILED))
#define XSETBUFFER(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BUFFER))
#define XSETCHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_CHAR_TABLE))
#define XSETBOOL_VECTOR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BOOL_VECTOR))
#define XSETSUB_CHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUB_CHAR_TABLE))
/* Efficiently convert a pointer to a Lisp object and back. The
pointer is represented as a Lisp integer, so the garbage collector
does not know about it. The pointer should not have both Lisp_Int1
bits set, which makes this conversion inherently unportable. */
INLINE void *
XINTPTR (Lisp_Object a)
{
return XUNTAG (a, Lisp_Int0);
}
INLINE Lisp_Object
make_pointer_integer (void *p)
{
Lisp_Object a = XIL (TAG_PTR (Lisp_Int0, p));
eassert (INTEGERP (a) && XINTPTR (a) == p);
return a;
}
/* Type checking. */
LISP_MACRO_DEFUN_VOID (CHECK_TYPE,
(int ok, Lisp_Object predicate, Lisp_Object x),
(ok, predicate, x))
/* See the macros in intervals.h. */
typedef struct interval *INTERVAL;
struct GCALIGNED Lisp_Cons
{
/* Car of this cons cell. */
Lisp_Object car;
union
{
/* Cdr of this cons cell. */
Lisp_Object cdr;
/* Used to chain conses on a free list. */
struct Lisp_Cons *chain;
} u;
};
/* Take the car or cdr of something known to be a cons cell. */
/* The _addr functions shouldn't be used outside of the minimal set
of code that has to know what a cons cell looks like. Other code not
part of the basic lisp implementation should assume that the car and cdr
fields are not accessible. (What if we want to switch to
a copying collector someday? Cached cons cell field addresses may be
invalidated at arbitrary points.) */
INLINE Lisp_Object *
xcar_addr (Lisp_Object c)
{
return &XCONS (c)->car;
}
INLINE Lisp_Object *
xcdr_addr (Lisp_Object c)
{
return &XCONS (c)->u.cdr;
}
/* Use these from normal code. */
LISP_MACRO_DEFUN (XCAR, Lisp_Object, (Lisp_Object c), (c))
LISP_MACRO_DEFUN (XCDR, Lisp_Object, (Lisp_Object c), (c))
/* Use these to set the fields of a cons cell.
Note that both arguments may refer to the same object, so 'n'
should not be read after 'c' is first modified. */
INLINE void
XSETCAR (Lisp_Object c, Lisp_Object n)
{
*xcar_addr (c) = n;
}
INLINE void
XSETCDR (Lisp_Object c, Lisp_Object n)
{
*xcdr_addr (c) = n;
}
/* Take the car or cdr of something whose type is not known. */
INLINE Lisp_Object
CAR (Lisp_Object c)
{
return (CONSP (c) ? XCAR (c)
: NILP (c) ? Qnil
: wrong_type_argument (Qlistp, c));
}
INLINE Lisp_Object
CDR (Lisp_Object c)
{
return (CONSP (c) ? XCDR (c)
: NILP (c) ? Qnil
: wrong_type_argument (Qlistp, c));
}
/* Take the car or cdr of something whose type is not known. */
INLINE Lisp_Object
CAR_SAFE (Lisp_Object c)
{
return CONSP (c) ? XCAR (c) : Qnil;
}
INLINE Lisp_Object
CDR_SAFE (Lisp_Object c)
{
return CONSP (c) ? XCDR (c) : Qnil;
}
/* In a string or vector, the sign bit of the `size' is the gc mark bit. */
struct GCALIGNED Lisp_String
{
ptrdiff_t size;
ptrdiff_t size_byte;
INTERVAL intervals; /* Text properties in this string. */
unsigned char *data;
};
/* True if STR is a multibyte string. */
INLINE bool
STRING_MULTIBYTE (Lisp_Object str)
{
return 0 <= XSTRING (str)->size_byte;
}
/* An upper bound on the number of bytes in a Lisp string, not
counting the terminating null. This a tight enough bound to
prevent integer overflow errors that would otherwise occur during
string size calculations. A string cannot contain more bytes than
a fixnum can represent, nor can it be so long that C pointer
arithmetic stops working on the string plus its terminating null.
Although the actual size limit (see STRING_BYTES_MAX in alloc.c)
may be a bit smaller than STRING_BYTES_BOUND, calculating it here
would expose alloc.c internal details that we'd rather keep
private.
This is a macro for use in static initializers. The cast to
ptrdiff_t ensures that the macro is signed. */
#define STRING_BYTES_BOUND \
((ptrdiff_t) min (MOST_POSITIVE_FIXNUM, min (SIZE_MAX, PTRDIFF_MAX) - 1))
/* Mark STR as a unibyte string. */
#define STRING_SET_UNIBYTE(STR) \
do { \
if (EQ (STR, empty_multibyte_string)) \
(STR) = empty_unibyte_string; \
else \
XSTRING (STR)->size_byte = -1; \
} while (false)
/* Mark STR as a multibyte string. Assure that STR contains only
ASCII characters in advance. */
#define STRING_SET_MULTIBYTE(STR) \
do { \
if (EQ (STR, empty_unibyte_string)) \
(STR) = empty_multibyte_string; \
else \
XSTRING (STR)->size_byte = XSTRING (STR)->size; \
} while (false)
/* Convenience functions for dealing with Lisp strings. */
INLINE unsigned char *
SDATA (Lisp_Object string)
{
return XSTRING (string)->data;
}
INLINE char *
SSDATA (Lisp_Object string)
{
/* Avoid "differ in sign" warnings. */
return (char *) SDATA (string);
}
INLINE unsigned char
SREF (Lisp_Object string, ptrdiff_t index)
{
return SDATA (string)[index];
}
INLINE void
SSET (Lisp_Object string, ptrdiff_t index, unsigned char new)
{
SDATA (string)[index] = new;
}
INLINE ptrdiff_t
SCHARS (Lisp_Object string)
{
return XSTRING (string)->size;
}
#ifdef GC_CHECK_STRING_BYTES
extern ptrdiff_t string_bytes (struct Lisp_String *);
#endif
INLINE ptrdiff_t
STRING_BYTES (struct Lisp_String *s)
{
#ifdef GC_CHECK_STRING_BYTES
return string_bytes (s);
#else
return s->size_byte < 0 ? s->size : s->size_byte;
#endif
}
INLINE ptrdiff_t
SBYTES (Lisp_Object string)
{
return STRING_BYTES (XSTRING (string));
}
INLINE void
STRING_SET_CHARS (Lisp_Object string, ptrdiff_t newsize)
{
XSTRING (string)->size = newsize;
}
/* Header of vector-like objects. This documents the layout constraints on
vectors and pseudovectors (objects of PVEC_xxx subtype). It also prevents
compilers from being fooled by Emacs's type punning: XSETPSEUDOVECTOR
and PSEUDOVECTORP cast their pointers to struct vectorlike_header *,
because when two such pointers potentially alias, a compiler won't
incorrectly reorder loads and stores to their size fields. See
Bug#8546. */
struct vectorlike_header
{
/* The only field contains various pieces of information:
- The MSB (ARRAY_MARK_FLAG) holds the gcmarkbit.
- The next bit (PSEUDOVECTOR_FLAG) indicates whether this is a plain
vector (0) or a pseudovector (1).
- If PSEUDOVECTOR_FLAG is 0, the rest holds the size (number
of slots) of the vector.
- If PSEUDOVECTOR_FLAG is 1, the rest is subdivided into three fields:
- a) pseudovector subtype held in PVEC_TYPE_MASK field;
- b) number of Lisp_Objects slots at the beginning of the object
held in PSEUDOVECTOR_SIZE_MASK field. These objects are always
traced by the GC;
- c) size of the rest fields held in PSEUDOVECTOR_REST_MASK and
measured in word_size units. Rest fields may also include
Lisp_Objects, but these objects usually needs some special treatment
during GC.
There are some exceptions. For PVEC_FREE, b) is always zero. For
PVEC_BOOL_VECTOR and PVEC_SUBR, both b) and c) are always zero.
Current layout limits the pseudovectors to 63 PVEC_xxx subtypes,
4095 Lisp_Objects in GC-ed area and 4095 word-sized other slots. */
ptrdiff_t size;
};
/* A regular vector is just a header plus an array of Lisp_Objects. */
struct Lisp_Vector
{
struct vectorlike_header header;
Lisp_Object contents[FLEXIBLE_ARRAY_MEMBER];
};
/* C11 prohibits alignof (struct Lisp_Vector), so compute it manually. */
enum
{
ALIGNOF_STRUCT_LISP_VECTOR
= alignof (union { struct vectorlike_header a; Lisp_Object b; })
};
/* A boolvector is a kind of vectorlike, with contents like a string. */
struct Lisp_Bool_Vector
{
/* HEADER.SIZE is the vector's size field. It doesn't have the real size,
just the subtype information. */
struct vectorlike_header header;
/* This is the size in bits. */
EMACS_INT size;
/* The actual bits, packed into bytes.
Zeros fill out the last word if needed.
The bits are in little-endian order in the bytes, and
the bytes are in little-endian order in the words. */
bits_word data[FLEXIBLE_ARRAY_MEMBER];
};
INLINE EMACS_INT
bool_vector_size (Lisp_Object a)
{
EMACS_INT size = XBOOL_VECTOR (a)->size;
eassume (0 <= size);
return size;
}
INLINE bits_word *
bool_vector_data (Lisp_Object a)
{
return XBOOL_VECTOR (a)->data;
}
INLINE unsigned char *
bool_vector_uchar_data (Lisp_Object a)
{
return (unsigned char *) bool_vector_data (a);
}
/* The number of data words and bytes in a bool vector with SIZE bits. */
INLINE EMACS_INT
bool_vector_words (EMACS_INT size)
{
eassume (0 <= size && size <= EMACS_INT_MAX - (BITS_PER_BITS_WORD - 1));
return (size + BITS_PER_BITS_WORD - 1) / BITS_PER_BITS_WORD;
}
INLINE EMACS_INT
bool_vector_bytes (EMACS_INT size)
{
eassume (0 <= size && size <= EMACS_INT_MAX - (BITS_PER_BITS_WORD - 1));
return (size + BOOL_VECTOR_BITS_PER_CHAR - 1) / BOOL_VECTOR_BITS_PER_CHAR;
}
/* True if A's Ith bit is set. */
INLINE bool
bool_vector_bitref (Lisp_Object a, EMACS_INT i)
{
eassume (0 <= i && i < bool_vector_size (a));
return !! (bool_vector_uchar_data (a)[i / BOOL_VECTOR_BITS_PER_CHAR]
& (1 << (i % BOOL_VECTOR_BITS_PER_CHAR)));
}
INLINE Lisp_Object
bool_vector_ref (Lisp_Object a, EMACS_INT i)
{
return bool_vector_bitref (a, i) ? Qt : Qnil;
}
/* Set A's Ith bit to B. */
INLINE void
bool_vector_set (Lisp_Object a, EMACS_INT i, bool b)
{
unsigned char *addr;
eassume (0 <= i && i < bool_vector_size (a));
addr = &bool_vector_uchar_data (a)[i / BOOL_VECTOR_BITS_PER_CHAR];
if (b)
*addr |= 1 << (i % BOOL_VECTOR_BITS_PER_CHAR);
else
*addr &= ~ (1 << (i % BOOL_VECTOR_BITS_PER_CHAR));
}
/* Some handy constants for calculating sizes
and offsets, mostly of vectorlike objects. */
enum
{
header_size = offsetof (struct Lisp_Vector, contents),
bool_header_size = offsetof (struct Lisp_Bool_Vector, data),
word_size = sizeof (Lisp_Object)
};
/* Conveniences for dealing with Lisp arrays. */
INLINE Lisp_Object
AREF (Lisp_Object array, ptrdiff_t idx)
{
return XVECTOR (array)->contents[idx];
}
INLINE Lisp_Object *
aref_addr (Lisp_Object array, ptrdiff_t idx)
{
return & XVECTOR (array)->contents[idx];
}
INLINE ptrdiff_t
ASIZE (Lisp_Object array)
{
return XVECTOR (array)->header.size;
}
INLINE void
ASET (Lisp_Object array, ptrdiff_t idx, Lisp_Object val)
{
eassert (0 <= idx && idx < ASIZE (array));
XVECTOR (array)->contents[idx] = val;
}
INLINE void
gc_aset (Lisp_Object array, ptrdiff_t idx, Lisp_Object val)
{
/* Like ASET, but also can be used in the garbage collector:
sweep_weak_table calls set_hash_key etc. while the table is marked. */
eassert (0 <= idx && idx < (ASIZE (array) & ~ARRAY_MARK_FLAG));
XVECTOR (array)->contents[idx] = val;
}
/* True, since Qnil's representation is zero. Every place in the code
that assumes Qnil is zero should verify (NIL_IS_ZERO), to make it easy
to find such assumptions later if we change Qnil to be nonzero. */
enum { NIL_IS_ZERO = XLI_BUILTIN_LISPSYM (iQnil) == 0 };
/* Clear the object addressed by P, with size NBYTES, so that all its
bytes are zero and all its Lisp values are nil. */
INLINE void
memclear (void *p, ptrdiff_t nbytes)
{
eassert (0 <= nbytes);
verify (NIL_IS_ZERO);
/* Since Qnil is zero, memset suffices. */
memset (p, 0, nbytes);
}
/* If a struct is made to look like a vector, this macro returns the length
of the shortest vector that would hold that struct. */
#define VECSIZE(type) \
((sizeof (type) - header_size + word_size - 1) / word_size)
/* Like VECSIZE, but used when the pseudo-vector has non-Lisp_Object fields
at the end and we need to compute the number of Lisp_Object fields (the
ones that the GC needs to trace). */
#define PSEUDOVECSIZE(type, nonlispfield) \
((offsetof (type, nonlispfield) - header_size) / word_size)
/* Compute A OP B, using the unsigned comparison operator OP. A and B
should be integer expressions. This is not the same as
mathematical comparison; for example, UNSIGNED_CMP (0, <, -1)
returns true. For efficiency, prefer plain unsigned comparison if A
and B's sizes both fit (after integer promotion). */
#define UNSIGNED_CMP(a, op, b) \
(max (sizeof ((a) + 0), sizeof ((b) + 0)) <= sizeof (unsigned) \
? ((a) + (unsigned) 0) op ((b) + (unsigned) 0) \
: ((a) + (uintmax_t) 0) op ((b) + (uintmax_t) 0))
/* True iff C is an ASCII character. */
#define ASCII_CHAR_P(c) UNSIGNED_CMP (c, <, 0x80)
/* A char-table is a kind of vectorlike, with contents are like a
vector but with a few other slots. For some purposes, it makes
sense to handle a char-table with type struct Lisp_Vector. An
element of a char table can be any Lisp objects, but if it is a sub
char-table, we treat it a table that contains information of a
specific range of characters. A sub char-table is like a vector but
with two integer fields between the header and Lisp data, which means
that it has to be marked with some precautions (see mark_char_table
in alloc.c). A sub char-table appears only in an element of a char-table,
and there's no way to access it directly from Emacs Lisp program. */
enum CHARTAB_SIZE_BITS
{
CHARTAB_SIZE_BITS_0 = 6,
CHARTAB_SIZE_BITS_1 = 4,
CHARTAB_SIZE_BITS_2 = 5,
CHARTAB_SIZE_BITS_3 = 7
};
extern const int chartab_size[4];
struct Lisp_Char_Table
{
/* HEADER.SIZE is the vector's size field, which also holds the
pseudovector type information. It holds the size, too.
The size counts the defalt, parent, purpose, ascii,
contents, and extras slots. */
struct vectorlike_header header;
/* This holds a default value,
which is used whenever the value for a specific character is nil. */
Lisp_Object defalt;
/* This points to another char table, which we inherit from when the
value for a specific character is nil. The `defalt' slot takes
precedence over this. */
Lisp_Object parent;
/* This is a symbol which says what kind of use this char-table is
meant for. */
Lisp_Object purpose;
/* The bottom sub char-table for characters of the range 0..127. It
is nil if none of ASCII character has a specific value. */
Lisp_Object ascii;
Lisp_Object contents[(1 << CHARTAB_SIZE_BITS_0)];
/* These hold additional data. It is a vector. */
Lisp_Object extras[FLEXIBLE_ARRAY_MEMBER];
};
struct Lisp_Sub_Char_Table
{
/* HEADER.SIZE is the vector's size field, which also holds the
pseudovector type information. It holds the size, too. */
struct vectorlike_header header;
/* Depth of this sub char-table. It should be 1, 2, or 3. A sub
char-table of depth 1 contains 16 elements, and each element
covers 4096 (128*32) characters. A sub char-table of depth 2
contains 32 elements, and each element covers 128 characters. A
sub char-table of depth 3 contains 128 elements, and each element
is for one character. */
int depth;
/* Minimum character covered by the sub char-table. */
int min_char;
/* Use set_sub_char_table_contents to set this. */
Lisp_Object contents[FLEXIBLE_ARRAY_MEMBER];
};
INLINE Lisp_Object
CHAR_TABLE_REF_ASCII (Lisp_Object ct, ptrdiff_t idx)
{
struct Lisp_Char_Table *tbl = NULL;
Lisp_Object val;
do
{
tbl = tbl ? XCHAR_TABLE (tbl->parent) : XCHAR_TABLE (ct);
val = (! SUB_CHAR_TABLE_P (tbl->ascii) ? tbl->ascii
: XSUB_CHAR_TABLE (tbl->ascii)->contents[idx]);
if (NILP (val))
val = tbl->defalt;
}
while (NILP (val) && ! NILP (tbl->parent));
return val;
}
/* Almost equivalent to Faref (CT, IDX) with optimization for ASCII
characters. Do not check validity of CT. */
INLINE Lisp_Object
CHAR_TABLE_REF (Lisp_Object ct, int idx)
{
return (ASCII_CHAR_P (idx)
? CHAR_TABLE_REF_ASCII (ct, idx)
: char_table_ref (ct, idx));
}
/* Equivalent to Faset (CT, IDX, VAL) with optimization for ASCII and
8-bit European characters. Do not check validity of CT. */
INLINE void
CHAR_TABLE_SET (Lisp_Object ct, int idx, Lisp_Object val)
{
if (ASCII_CHAR_P (idx) && SUB_CHAR_TABLE_P (XCHAR_TABLE (ct)->ascii))
set_sub_char_table_contents (XCHAR_TABLE (ct)->ascii, idx, val);
else
char_table_set (ct, idx, val);
}
/* This structure describes a built-in function.
It is generated by the DEFUN macro only.
defsubr makes it into a Lisp object. */
struct Lisp_Subr
{
struct vectorlike_header header;
union {
Lisp_Object (*a0) (void);
Lisp_Object (*a1) (Lisp_Object);
Lisp_Object (*a2) (Lisp_Object, Lisp_Object);
Lisp_Object (*a3) (Lisp_Object, Lisp_Object, Lisp_Object);
Lisp_Object (*a4) (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
Lisp_Object (*a5) (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
Lisp_Object (*a6) (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
Lisp_Object (*a7) (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
Lisp_Object (*a8) (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
Lisp_Object (*aUNEVALLED) (Lisp_Object args);
Lisp_Object (*aMANY) (ptrdiff_t, Lisp_Object *);
} function;
short min_args, max_args;
const char *symbol_name;
const char *intspec;
const char *doc;
};
enum char_table_specials
{
/* This is the number of slots that every char table must have. This
counts the ordinary slots and the top, defalt, parent, and purpose
slots. */
CHAR_TABLE_STANDARD_SLOTS = PSEUDOVECSIZE (struct Lisp_Char_Table, extras),
/* This is an index of first Lisp_Object field in Lisp_Sub_Char_Table
when the latter is treated as an ordinary Lisp_Vector. */
SUB_CHAR_TABLE_OFFSET = PSEUDOVECSIZE (struct Lisp_Sub_Char_Table, contents)
};
/* Return the number of "extra" slots in the char table CT. */
INLINE int
CHAR_TABLE_EXTRA_SLOTS (struct Lisp_Char_Table *ct)
{
return ((ct->header.size & PSEUDOVECTOR_SIZE_MASK)
- CHAR_TABLE_STANDARD_SLOTS);
}
/* Make sure that sub char-table contents slot is where we think it is. */
verify (offsetof (struct Lisp_Sub_Char_Table, contents)
== offsetof (struct Lisp_Vector, contents[SUB_CHAR_TABLE_OFFSET]));
/***********************************************************************
Symbols
***********************************************************************/
/* Value is name of symbol. */
LISP_MACRO_DEFUN (SYMBOL_VAL, Lisp_Object, (struct Lisp_Symbol *sym), (sym))
INLINE struct Lisp_Symbol *
SYMBOL_ALIAS (struct Lisp_Symbol *sym)
{
eassert (sym->redirect == SYMBOL_VARALIAS);
return sym->val.alias;
}
INLINE struct Lisp_Buffer_Local_Value *
SYMBOL_BLV (struct Lisp_Symbol *sym)
{
eassert (sym->redirect == SYMBOL_LOCALIZED);
return sym->val.blv;
}
INLINE union Lisp_Fwd *
SYMBOL_FWD (struct Lisp_Symbol *sym)
{
eassert (sym->redirect == SYMBOL_FORWARDED);
return sym->val.fwd;
}
LISP_MACRO_DEFUN_VOID (SET_SYMBOL_VAL,
(struct Lisp_Symbol *sym, Lisp_Object v), (sym, v))
INLINE void
SET_SYMBOL_ALIAS (struct Lisp_Symbol *sym, struct Lisp_Symbol *v)
{
eassert (sym->redirect == SYMBOL_VARALIAS);
sym->val.alias = v;
}
INLINE void
SET_SYMBOL_BLV (struct Lisp_Symbol *sym, struct Lisp_Buffer_Local_Value *v)
{
eassert (sym->redirect == SYMBOL_LOCALIZED);
sym->val.blv = v;
}
INLINE void
SET_SYMBOL_FWD (struct Lisp_Symbol *sym, union Lisp_Fwd *v)
{
eassert (sym->redirect == SYMBOL_FORWARDED);
sym->val.fwd = v;
}
INLINE Lisp_Object
SYMBOL_NAME (Lisp_Object sym)
{
return XSYMBOL (sym)->name;
}
/* Value is true if SYM is an interned symbol. */
INLINE bool
SYMBOL_INTERNED_P (Lisp_Object sym)
{
return XSYMBOL (sym)->interned != SYMBOL_UNINTERNED;
}
/* Value is true if SYM is interned in initial_obarray. */
INLINE bool
SYMBOL_INTERNED_IN_INITIAL_OBARRAY_P (Lisp_Object sym)
{
return XSYMBOL (sym)->interned == SYMBOL_INTERNED_IN_INITIAL_OBARRAY;
}
/* Value is non-zero if symbol is considered a constant, i.e. its
value cannot be changed (there is an exception for keyword symbols,
whose value can be set to the keyword symbol itself). */
LISP_MACRO_DEFUN (SYMBOL_CONSTANT_P, int, (Lisp_Object sym), (sym))
/* Placeholder for make-docfile to process. The actual symbol
definition is done by lread.c's defsym. */
#define DEFSYM(sym, name) /* empty */
\f
/***********************************************************************
Hash Tables
***********************************************************************/
/* The structure of a Lisp hash table. */
struct hash_table_test
{
/* Name of the function used to compare keys. */
Lisp_Object name;
/* User-supplied hash function, or nil. */
Lisp_Object user_hash_function;
/* User-supplied key comparison function, or nil. */
Lisp_Object user_cmp_function;
/* C function to compare two keys. */
bool (*cmpfn) (struct hash_table_test *t, Lisp_Object, Lisp_Object);
/* C function to compute hash code. */
EMACS_UINT (*hashfn) (struct hash_table_test *t, Lisp_Object);
};
struct Lisp_Hash_Table
{
/* This is for Lisp; the hash table code does not refer to it. */
struct vectorlike_header header;
/* Nil if table is non-weak. Otherwise a symbol describing the
weakness of the table. */
Lisp_Object weak;
/* When the table is resized, and this is an integer, compute the
new size by adding this to the old size. If a float, compute the
new size by multiplying the old size with this factor. */
Lisp_Object rehash_size;
/* Resize hash table when number of entries/ table size is >= this
ratio, a float. */
Lisp_Object rehash_threshold;
/* Vector of hash codes. If hash[I] is nil, this means that the
I-th entry is unused. */
Lisp_Object hash;
/* Vector used to chain entries. If entry I is free, next[I] is the
entry number of the next free item. If entry I is non-free,
next[I] is the index of the next entry in the collision chain. */
Lisp_Object next;
/* Index of first free entry in free list. */
Lisp_Object next_free;
/* Bucket vector. A non-nil entry is the index of the first item in
a collision chain. This vector's size can be larger than the
hash table size to reduce collisions. */
Lisp_Object index;
/* Only the fields above are traced normally by the GC. The ones below
`count' are special and are either ignored by the GC or traced in
a special way (e.g. because of weakness). */
/* Number of key/value entries in the table. */
ptrdiff_t count;
/* Vector of keys and values. The key of item I is found at index
2 * I, the value is found at index 2 * I + 1.
This is gc_marked specially if the table is weak. */
Lisp_Object key_and_value;
/* The comparison and hash functions. */
struct hash_table_test test;
/* Next weak hash table if this is a weak hash table. The head
of the list is in weak_hash_tables. */
struct Lisp_Hash_Table *next_weak;
};
INLINE struct Lisp_Hash_Table *
XHASH_TABLE (Lisp_Object a)
{
return XUNTAG (a, Lisp_Vectorlike);
}
#define XSET_HASH_TABLE(VAR, PTR) \
(XSETPSEUDOVECTOR (VAR, PTR, PVEC_HASH_TABLE))
INLINE bool
HASH_TABLE_P (Lisp_Object a)
{
return PSEUDOVECTORP (a, PVEC_HASH_TABLE);
}
/* Value is the key part of entry IDX in hash table H. */
INLINE Lisp_Object
HASH_KEY (struct Lisp_Hash_Table *h, ptrdiff_t idx)
{
return AREF (h->key_and_value, 2 * idx);
}
/* Value is the value part of entry IDX in hash table H. */
INLINE Lisp_Object
HASH_VALUE (struct Lisp_Hash_Table *h, ptrdiff_t idx)
{
return AREF (h->key_and_value, 2 * idx + 1);
}
/* Value is the index of the next entry following the one at IDX
in hash table H. */
INLINE Lisp_Object
HASH_NEXT (struct Lisp_Hash_Table *h, ptrdiff_t idx)
{
return AREF (h->next, idx);
}
/* Value is the hash code computed for entry IDX in hash table H. */
INLINE Lisp_Object
HASH_HASH (struct Lisp_Hash_Table *h, ptrdiff_t idx)
{
return AREF (h->hash, idx);
}
/* Value is the index of the element in hash table H that is the
start of the collision list at index IDX in the index vector of H. */
INLINE Lisp_Object
HASH_INDEX (struct Lisp_Hash_Table *h, ptrdiff_t idx)
{
return AREF (h->index, idx);
}
/* Value is the size of hash table H. */
INLINE ptrdiff_t
HASH_TABLE_SIZE (struct Lisp_Hash_Table *h)
{
return ASIZE (h->next);
}
/* Default size for hash tables if not specified. */
enum DEFAULT_HASH_SIZE { DEFAULT_HASH_SIZE = 65 };
/* Default threshold specifying when to resize a hash table. The
value gives the ratio of current entries in the hash table and the
size of the hash table. */
static double const DEFAULT_REHASH_THRESHOLD = 0.8;
/* Default factor by which to increase the size of a hash table. */
static double const DEFAULT_REHASH_SIZE = 1.5;
/* Combine two integers X and Y for hashing. The result might not fit
into a Lisp integer. */
INLINE EMACS_UINT
sxhash_combine (EMACS_UINT x, EMACS_UINT y)
{
return (x << 4) + (x >> (BITS_PER_EMACS_INT - 4)) + y;
}
/* Hash X, returning a value that fits into a fixnum. */
INLINE EMACS_UINT
SXHASH_REDUCE (EMACS_UINT x)
{
return (x ^ x >> (BITS_PER_EMACS_INT - FIXNUM_BITS)) & INTMASK;
}
/* These structures are used for various misc types. */
struct Lisp_Misc_Any /* Supertype of all Misc types. */
{
ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_??? */
bool_bf gcmarkbit : 1;
unsigned spacer : 15;
};
struct Lisp_Marker
{
ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Marker */
bool_bf gcmarkbit : 1;
unsigned spacer : 13;
/* This flag is temporarily used in the functions
decode/encode_coding_object to record that the marker position
must be adjusted after the conversion. */
bool_bf need_adjustment : 1;
/* True means normal insertion at the marker's position
leaves the marker after the inserted text. */
bool_bf insertion_type : 1;
/* This is the buffer that the marker points into, or 0 if it points nowhere.
Note: a chain of markers can contain markers pointing into different
buffers (the chain is per buffer_text rather than per buffer, so it's
shared between indirect buffers). */
/* This is used for (other than NULL-checking):
- Fmarker_buffer
- Fset_marker: check eq(oldbuf, newbuf) to avoid unchain+rechain.
- unchain_marker: to find the list from which to unchain.
- Fkill_buffer: to only unchain the markers of current indirect buffer.
*/
struct buffer *buffer;
/* The remaining fields are meaningless in a marker that
does not point anywhere. */
/* For markers that point somewhere,
this is used to chain of all the markers in a given buffer. */
/* We could remove it and use an array in buffer_text instead.
That would also allow to preserve it ordered. */
struct Lisp_Marker *next;
/* This is the char position where the marker points. */
ptrdiff_t charpos;
/* This is the byte position.
It's mostly used as a charpos<->bytepos cache (i.e. it's not directly
used to implement the functionality of markers, but rather to (ab)use
markers as a cache for char<->byte mappings). */
ptrdiff_t bytepos;
};
/* START and END are markers in the overlay's buffer, and
PLIST is the overlay's property list. */
struct Lisp_Overlay
/* An overlay's real data content is:
- plist
- buffer (really there are two buffer pointers, one per marker,
and both points to the same buffer)
- insertion type of both ends (per-marker fields)
- start & start byte (of start marker)
- end & end byte (of end marker)
- next (singly linked list of overlays)
- next fields of start and end markers (singly linked list of markers).
I.e. 9words plus 2 bits, 3words of which are for external linked lists.
*/
{
ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Overlay */
bool_bf gcmarkbit : 1;
unsigned spacer : 15;
struct Lisp_Overlay *next;
Lisp_Object start;
Lisp_Object end;
Lisp_Object plist;
};
/* Types of data which may be saved in a Lisp_Save_Value. */
enum
{
SAVE_UNUSED,
SAVE_INTEGER,
SAVE_FUNCPOINTER,
SAVE_POINTER,
SAVE_OBJECT
};
/* Number of bits needed to store one of the above values. */
enum { SAVE_SLOT_BITS = 3 };
/* Number of slots in a save value where save_type is nonzero. */
enum { SAVE_VALUE_SLOTS = 4 };
/* Bit-width and values for struct Lisp_Save_Value's save_type member. */
enum { SAVE_TYPE_BITS = SAVE_VALUE_SLOTS * SAVE_SLOT_BITS + 1 };
enum Lisp_Save_Type
{
SAVE_TYPE_INT_INT = SAVE_INTEGER + (SAVE_INTEGER << SAVE_SLOT_BITS),
SAVE_TYPE_INT_INT_INT
= (SAVE_INTEGER + (SAVE_TYPE_INT_INT << SAVE_SLOT_BITS)),
SAVE_TYPE_OBJ_OBJ = SAVE_OBJECT + (SAVE_OBJECT << SAVE_SLOT_BITS),
SAVE_TYPE_OBJ_OBJ_OBJ = SAVE_OBJECT + (SAVE_TYPE_OBJ_OBJ << SAVE_SLOT_BITS),
SAVE_TYPE_OBJ_OBJ_OBJ_OBJ
= SAVE_OBJECT + (SAVE_TYPE_OBJ_OBJ_OBJ << SAVE_SLOT_BITS),
SAVE_TYPE_PTR_INT = SAVE_POINTER + (SAVE_INTEGER << SAVE_SLOT_BITS),
SAVE_TYPE_PTR_OBJ = SAVE_POINTER + (SAVE_OBJECT << SAVE_SLOT_BITS),
SAVE_TYPE_PTR_PTR = SAVE_POINTER + (SAVE_POINTER << SAVE_SLOT_BITS),
SAVE_TYPE_FUNCPTR_PTR_OBJ
= SAVE_FUNCPOINTER + (SAVE_TYPE_PTR_OBJ << SAVE_SLOT_BITS),
/* This has an extra bit indicating it's raw memory. */
SAVE_TYPE_MEMORY = SAVE_TYPE_PTR_INT + (1 << (SAVE_TYPE_BITS - 1))
};
/* Special object used to hold a different values for later use.
This is mostly used to package C integers and pointers to call
record_unwind_protect when two or more values need to be saved.
For example:
...
struct my_data *md = get_my_data ();
ptrdiff_t mi = get_my_integer ();
record_unwind_protect (my_unwind, make_save_ptr_int (md, mi));
...
Lisp_Object my_unwind (Lisp_Object arg)
{
struct my_data *md = XSAVE_POINTER (arg, 0);
ptrdiff_t mi = XSAVE_INTEGER (arg, 1);
...
}
If ENABLE_CHECKING is in effect, XSAVE_xxx macros do type checking of the
saved objects and raise eassert if type of the saved object doesn't match
the type which is extracted. In the example above, XSAVE_INTEGER (arg, 2)
and XSAVE_OBJECT (arg, 0) are wrong because nothing was saved in slot 2 and
slot 0 is a pointer. */
typedef void (*voidfuncptr) (void);
struct Lisp_Save_Value
{
ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Save_Value */
bool_bf gcmarkbit : 1;
unsigned spacer : 32 - (16 + 1 + SAVE_TYPE_BITS);
/* V->data may hold up to SAVE_VALUE_SLOTS entries. The type of
V's data entries are determined by V->save_type. E.g., if
V->save_type == SAVE_TYPE_PTR_OBJ, V->data[0] is a pointer,
V->data[1] is an integer, and V's other data entries are unused.
If V->save_type == SAVE_TYPE_MEMORY, V->data[0].pointer is the address of
a memory area containing V->data[1].integer potential Lisp_Objects. */
ENUM_BF (Lisp_Save_Type) save_type : SAVE_TYPE_BITS;
union {
void *pointer;
voidfuncptr funcpointer;
ptrdiff_t integer;
Lisp_Object object;
} data[SAVE_VALUE_SLOTS];
};
/* Return the type of V's Nth saved value. */
INLINE int
save_type (struct Lisp_Save_Value *v, int n)
{
eassert (0 <= n && n < SAVE_VALUE_SLOTS);
return (v->save_type >> (SAVE_SLOT_BITS * n) & ((1 << SAVE_SLOT_BITS) - 1));
}
/* Get and set the Nth saved pointer. */
INLINE void *
XSAVE_POINTER (Lisp_Object obj, int n)
{
eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_POINTER);
return XSAVE_VALUE (obj)->data[n].pointer;
}
INLINE void
set_save_pointer (Lisp_Object obj, int n, void *val)
{
eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_POINTER);
XSAVE_VALUE (obj)->data[n].pointer = val;
}
INLINE voidfuncptr
XSAVE_FUNCPOINTER (Lisp_Object obj, int n)
{
eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_FUNCPOINTER);
return XSAVE_VALUE (obj)->data[n].funcpointer;
}
/* Likewise for the saved integer. */
INLINE ptrdiff_t
XSAVE_INTEGER (Lisp_Object obj, int n)
{
eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_INTEGER);
return XSAVE_VALUE (obj)->data[n].integer;
}
INLINE void
set_save_integer (Lisp_Object obj, int n, ptrdiff_t val)
{
eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_INTEGER);
XSAVE_VALUE (obj)->data[n].integer = val;
}
/* Extract Nth saved object. */
INLINE Lisp_Object
XSAVE_OBJECT (Lisp_Object obj, int n)
{
eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_OBJECT);
return XSAVE_VALUE (obj)->data[n].object;
}
/* A finalizer sentinel. */
struct Lisp_Finalizer
{
struct Lisp_Misc_Any base;
/* Circular list of all active weak references. */
struct Lisp_Finalizer *prev;
struct Lisp_Finalizer *next;
/* Call FUNCTION when the finalizer becomes unreachable, even if
FUNCTION contains a reference to the finalizer; i.e., call
FUNCTION when it is reachable _only_ through finalizers. */
Lisp_Object function;
};
/* A miscellaneous object, when it's on the free list. */
struct Lisp_Free
{
ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Free */
bool_bf gcmarkbit : 1;
unsigned spacer : 15;
union Lisp_Misc *chain;
};
/* To get the type field of a union Lisp_Misc, use XMISCTYPE.
It uses one of these struct subtypes to get the type field. */
union Lisp_Misc
{
struct Lisp_Misc_Any u_any; /* Supertype of all Misc types. */
struct Lisp_Free u_free;
struct Lisp_Marker u_marker;
struct Lisp_Overlay u_overlay;
struct Lisp_Save_Value u_save_value;
struct Lisp_Finalizer u_finalizer;
};
INLINE union Lisp_Misc *
XMISC (Lisp_Object a)
{
return XUNTAG (a, Lisp_Misc);
}
INLINE struct Lisp_Misc_Any *
XMISCANY (Lisp_Object a)
{
eassert (MISCP (a));
return & XMISC (a)->u_any;
}
INLINE enum Lisp_Misc_Type
XMISCTYPE (Lisp_Object a)
{
return XMISCANY (a)->type;
}
INLINE struct Lisp_Marker *
XMARKER (Lisp_Object a)
{
eassert (MARKERP (a));
return & XMISC (a)->u_marker;
}
INLINE struct Lisp_Overlay *
XOVERLAY (Lisp_Object a)
{
eassert (OVERLAYP (a));
return & XMISC (a)->u_overlay;
}
INLINE struct Lisp_Save_Value *
XSAVE_VALUE (Lisp_Object a)
{
eassert (SAVE_VALUEP (a));
return & XMISC (a)->u_save_value;
}
INLINE struct Lisp_Finalizer *
XFINALIZER (Lisp_Object a)
{
eassert (FINALIZERP (a));
return & XMISC (a)->u_finalizer;
}
\f
/* Forwarding pointer to an int variable.
This is allowed only in the value cell of a symbol,
and it means that the symbol's value really lives in the
specified int variable. */
struct Lisp_Intfwd
{
enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Int */
EMACS_INT *intvar;
};
/* Boolean forwarding pointer to an int variable.
This is like Lisp_Intfwd except that the ostensible
"value" of the symbol is t if the bool variable is true,
nil if it is false. */
struct Lisp_Boolfwd
{
enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Bool */
bool *boolvar;
};
/* Forwarding pointer to a Lisp_Object variable.
This is allowed only in the value cell of a symbol,
and it means that the symbol's value really lives in the
specified variable. */
struct Lisp_Objfwd
{
enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Obj */
Lisp_Object *objvar;
};
/* Like Lisp_Objfwd except that value lives in a slot in the
current buffer. Value is byte index of slot within buffer. */
struct Lisp_Buffer_Objfwd
{
enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Buffer_Obj */
int offset;
/* One of Qnil, Qintegerp, Qsymbolp, Qstringp, Qfloatp or Qnumberp. */
Lisp_Object predicate;
};
/* struct Lisp_Buffer_Local_Value is used in a symbol value cell when
the symbol has buffer-local or frame-local bindings. (Exception:
some buffer-local variables are built-in, with their values stored
in the buffer structure itself. They are handled differently,
using struct Lisp_Buffer_Objfwd.)
The `realvalue' slot holds the variable's current value, or a
forwarding pointer to where that value is kept. This value is the
one that corresponds to the loaded binding. To read or set the
variable, you must first make sure the right binding is loaded;
then you can access the value in (or through) `realvalue'.
`buffer' and `frame' are the buffer and frame for which the loaded
binding was found. If those have changed, to make sure the right
binding is loaded it is necessary to find which binding goes with
the current buffer and selected frame, then load it. To load it,
first unload the previous binding, then copy the value of the new
binding into `realvalue' (or through it). Also update
LOADED-BINDING to point to the newly loaded binding.
`local_if_set' indicates that merely setting the variable creates a
local binding for the current buffer. Otherwise the latter, setting
the variable does not do that; only make-local-variable does that. */
struct Lisp_Buffer_Local_Value
{
/* True means that merely setting the variable creates a local
binding for the current buffer. */
bool_bf local_if_set : 1;
/* True means this variable can have frame-local bindings, otherwise, it is
can have buffer-local bindings. The two cannot be combined. */
bool_bf frame_local : 1;
/* True means that the binding now loaded was found.
Presumably equivalent to (defcell!=valcell). */
bool_bf found : 1;
/* If non-NULL, a forwarding to the C var where it should also be set. */
union Lisp_Fwd *fwd; /* Should never be (Buffer|Kboard)_Objfwd. */
/* The buffer or frame for which the loaded binding was found. */
Lisp_Object where;
/* A cons cell that holds the default value. It has the form
(SYMBOL . DEFAULT-VALUE). */
Lisp_Object defcell;
/* The cons cell from `where's parameter alist.
It always has the form (SYMBOL . VALUE)
Note that if `forward' is non-nil, VALUE may be out of date.
Also if the currently loaded binding is the default binding, then
this is `eq'ual to defcell. */
Lisp_Object valcell;
};
/* Like Lisp_Objfwd except that value lives in a slot in the
current kboard. */
struct Lisp_Kboard_Objfwd
{
enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Kboard_Obj */
int offset;
};
union Lisp_Fwd
{
struct Lisp_Intfwd u_intfwd;
struct Lisp_Boolfwd u_boolfwd;
struct Lisp_Objfwd u_objfwd;
struct Lisp_Buffer_Objfwd u_buffer_objfwd;
struct Lisp_Kboard_Objfwd u_kboard_objfwd;
};
INLINE enum Lisp_Fwd_Type
XFWDTYPE (union Lisp_Fwd *a)
{
return a->u_intfwd.type;
}
INLINE struct Lisp_Buffer_Objfwd *
XBUFFER_OBJFWD (union Lisp_Fwd *a)
{
eassert (BUFFER_OBJFWDP (a));
return &a->u_buffer_objfwd;
}
\f
/* Lisp floating point type. */
struct Lisp_Float
{
union
{
double data;
struct Lisp_Float *chain;
} u;
};
INLINE double
XFLOAT_DATA (Lisp_Object f)
{
return XFLOAT (f)->u.data;
}
/* Most hosts nowadays use IEEE floating point, so they use IEC 60559
representations, have infinities and NaNs, and do not trap on
exceptions. Define IEEE_FLOATING_POINT if this host is one of the
typical ones. The C11 macro __STDC_IEC_559__ is close to what is
wanted here, but is not quite right because Emacs does not require
all the features of C11 Annex F (and does not require C11 at all,
for that matter). */
enum
{
IEEE_FLOATING_POINT
= (FLT_RADIX == 2 && FLT_MANT_DIG == 24
&& FLT_MIN_EXP == -125 && FLT_MAX_EXP == 128)
};
/* A character, declared with the following typedef, is a member
of some character set associated with the current buffer. */
#ifndef _UCHAR_T /* Protect against something in ctab.h on AIX. */
#define _UCHAR_T
typedef unsigned char UCHAR;
#endif
/* Meanings of slots in a Lisp_Compiled: */
enum Lisp_Compiled
{
COMPILED_ARGLIST = 0,
COMPILED_BYTECODE = 1,
COMPILED_CONSTANTS = 2,
COMPILED_STACK_DEPTH = 3,
COMPILED_DOC_STRING = 4,
COMPILED_INTERACTIVE = 5
};
/* Flag bits in a character. These also get used in termhooks.h.
Richard Stallman <rms@gnu.ai.mit.edu> thinks that MULE
(MUlti-Lingual Emacs) might need 22 bits for the character value
itself, so we probably shouldn't use any bits lower than 0x0400000. */
enum char_bits
{
CHAR_ALT = 0x0400000,
CHAR_SUPER = 0x0800000,
CHAR_HYPER = 0x1000000,
CHAR_SHIFT = 0x2000000,
CHAR_CTL = 0x4000000,
CHAR_META = 0x8000000,
CHAR_MODIFIER_MASK =
CHAR_ALT | CHAR_SUPER | CHAR_HYPER | CHAR_SHIFT | CHAR_CTL | CHAR_META,
/* Actually, the current Emacs uses 22 bits for the character value
itself. */
CHARACTERBITS = 22
};
\f
/* Data type checking. */
LISP_MACRO_DEFUN (NILP, bool, (Lisp_Object x), (x))
INLINE bool
NUMBERP (Lisp_Object x)
{
return INTEGERP (x) || FLOATP (x);
}
INLINE bool
NATNUMP (Lisp_Object x)
{
return INTEGERP (x) && 0 <= XINT (x);
}
INLINE bool
RANGED_INTEGERP (intmax_t lo, Lisp_Object x, intmax_t hi)
{
return INTEGERP (x) && lo <= XINT (x) && XINT (x) <= hi;
}
#define TYPE_RANGED_INTEGERP(type, x) \
(INTEGERP (x) \
&& (TYPE_SIGNED (type) ? TYPE_MINIMUM (type) <= XINT (x) : 0 <= XINT (x)) \
&& XINT (x) <= TYPE_MAXIMUM (type))
LISP_MACRO_DEFUN (CONSP, bool, (Lisp_Object x), (x))
LISP_MACRO_DEFUN (FLOATP, bool, (Lisp_Object x), (x))
LISP_MACRO_DEFUN (MISCP, bool, (Lisp_Object x), (x))
LISP_MACRO_DEFUN (SYMBOLP, bool, (Lisp_Object x), (x))
LISP_MACRO_DEFUN (INTEGERP, bool, (Lisp_Object x), (x))
LISP_MACRO_DEFUN (VECTORLIKEP, bool, (Lisp_Object x), (x))
LISP_MACRO_DEFUN (MARKERP, bool, (Lisp_Object x), (x))
INLINE bool
STRINGP (Lisp_Object x)
{
return XTYPE (x) == Lisp_String;
}
INLINE bool
VECTORP (Lisp_Object x)
{
return VECTORLIKEP (x) && ! (ASIZE (x) & PSEUDOVECTOR_FLAG);
}
INLINE bool
OVERLAYP (Lisp_Object x)
{
return MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Overlay;
}
INLINE bool
SAVE_VALUEP (Lisp_Object x)
{
return MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Save_Value;
}
INLINE bool
FINALIZERP (Lisp_Object x)
{
return MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Finalizer;
}
INLINE bool
AUTOLOADP (Lisp_Object x)
{
return CONSP (x) && EQ (Qautoload, XCAR (x));
}
INLINE bool
BUFFER_OBJFWDP (union Lisp_Fwd *a)
{
return XFWDTYPE (a) == Lisp_Fwd_Buffer_Obj;
}
INLINE bool
PSEUDOVECTOR_TYPEP (struct vectorlike_header *a, int code)
{
return ((a->size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK))
== (PSEUDOVECTOR_FLAG | (code << PSEUDOVECTOR_AREA_BITS)));
}
/* True if A is a pseudovector whose code is CODE. */
INLINE bool
PSEUDOVECTORP (Lisp_Object a, int code)
{
if (! VECTORLIKEP (a))
return false;
else
{
/* Converting to struct vectorlike_header * avoids aliasing issues. */
struct vectorlike_header *h = XUNTAG (a, Lisp_Vectorlike);
return PSEUDOVECTOR_TYPEP (h, code);
}
}
/* Test for specific pseudovector types. */
INLINE bool
WINDOW_CONFIGURATIONP (Lisp_Object a)
{
return PSEUDOVECTORP (a, PVEC_WINDOW_CONFIGURATION);
}
INLINE bool
PROCESSP (Lisp_Object a)
{
return PSEUDOVECTORP (a, PVEC_PROCESS);
}
INLINE bool
WINDOWP (Lisp_Object a)
{
return PSEUDOVECTORP (a, PVEC_WINDOW);
}
INLINE bool
TERMINALP (Lisp_Object a)
{
return PSEUDOVECTORP (a, PVEC_TERMINAL);
}
INLINE bool
SUBRP (Lisp_Object a)
{
return PSEUDOVECTORP (a, PVEC_SUBR);
}
INLINE bool
COMPILEDP (Lisp_Object a)
{
return PSEUDOVECTORP (a, PVEC_COMPILED);
}
INLINE bool
BUFFERP (Lisp_Object a)
{
return PSEUDOVECTORP (a, PVEC_BUFFER);
}
INLINE bool
CHAR_TABLE_P (Lisp_Object a)
{
return PSEUDOVECTORP (a, PVEC_CHAR_TABLE);
}
INLINE bool
SUB_CHAR_TABLE_P (Lisp_Object a)
{
return PSEUDOVECTORP (a, PVEC_SUB_CHAR_TABLE);
}
INLINE bool
BOOL_VECTOR_P (Lisp_Object a)
{
return PSEUDOVECTORP (a, PVEC_BOOL_VECTOR);
}
INLINE bool
FRAMEP (Lisp_Object a)
{
return PSEUDOVECTORP (a, PVEC_FRAME);
}
/* Test for image (image . spec) */
INLINE bool
IMAGEP (Lisp_Object x)
{
return CONSP (x) && EQ (XCAR (x), Qimage);
}
/* Array types. */
INLINE bool
ARRAYP (Lisp_Object x)
{
return VECTORP (x) || STRINGP (x) || CHAR_TABLE_P (x) || BOOL_VECTOR_P (x);
}
\f
INLINE void
CHECK_LIST (Lisp_Object x)
{
CHECK_TYPE (CONSP (x) || NILP (x), Qlistp, x);
}
LISP_MACRO_DEFUN_VOID (CHECK_LIST_CONS, (Lisp_Object x, Lisp_Object y), (x, y))
LISP_MACRO_DEFUN_VOID (CHECK_SYMBOL, (Lisp_Object x), (x))
LISP_MACRO_DEFUN_VOID (CHECK_NUMBER, (Lisp_Object x), (x))
INLINE void
CHECK_STRING (Lisp_Object x)
{
CHECK_TYPE (STRINGP (x), Qstringp, x);
}
INLINE void
CHECK_STRING_CAR (Lisp_Object x)
{
CHECK_TYPE (STRINGP (XCAR (x)), Qstringp, XCAR (x));
}
INLINE void
CHECK_CONS (Lisp_Object x)
{
CHECK_TYPE (CONSP (x), Qconsp, x);
}
INLINE void
CHECK_VECTOR (Lisp_Object x)
{
CHECK_TYPE (VECTORP (x), Qvectorp, x);
}
INLINE void
CHECK_BOOL_VECTOR (Lisp_Object x)
{
CHECK_TYPE (BOOL_VECTOR_P (x), Qbool_vector_p, x);
}
/* This is a bit special because we always need size afterwards. */
INLINE ptrdiff_t
CHECK_VECTOR_OR_STRING (Lisp_Object x)
{
if (VECTORP (x))
return ASIZE (x);
if (STRINGP (x))
return SCHARS (x);
wrong_type_argument (Qarrayp, x);
}
INLINE void
CHECK_ARRAY (Lisp_Object x, Lisp_Object predicate)
{
CHECK_TYPE (ARRAYP (x), predicate, x);
}
INLINE void
CHECK_BUFFER (Lisp_Object x)
{
CHECK_TYPE (BUFFERP (x), Qbufferp, x);
}
INLINE void
CHECK_WINDOW (Lisp_Object x)
{
CHECK_TYPE (WINDOWP (x), Qwindowp, x);
}
#ifdef subprocesses
INLINE void
CHECK_PROCESS (Lisp_Object x)
{
CHECK_TYPE (PROCESSP (x), Qprocessp, x);
}
#endif
INLINE void
CHECK_NATNUM (Lisp_Object x)
{
CHECK_TYPE (NATNUMP (x), Qwholenump, x);
}
#define CHECK_RANGED_INTEGER(x, lo, hi) \
do { \
CHECK_NUMBER (x); \
if (! ((lo) <= XINT (x) && XINT (x) <= (hi))) \
args_out_of_range_3 \
(x, \
make_number ((lo) < 0 && (lo) < MOST_NEGATIVE_FIXNUM \
? MOST_NEGATIVE_FIXNUM \
: (lo)), \
make_number (min (hi, MOST_POSITIVE_FIXNUM))); \
} while (false)
#define CHECK_TYPE_RANGED_INTEGER(type, x) \
do { \
if (TYPE_SIGNED (type)) \
CHECK_RANGED_INTEGER (x, TYPE_MINIMUM (type), TYPE_MAXIMUM (type)); \
else \
CHECK_RANGED_INTEGER (x, 0, TYPE_MAXIMUM (type)); \
} while (false)
#define CHECK_NUMBER_COERCE_MARKER(x) \
do { \
if (MARKERP ((x))) \
XSETFASTINT (x, marker_position (x)); \
else \
CHECK_TYPE (INTEGERP (x), Qinteger_or_marker_p, x); \
} while (false)
INLINE double
XFLOATINT (Lisp_Object n)
{
return extract_float (n);
}
INLINE void
CHECK_NUMBER_OR_FLOAT (Lisp_Object x)
{
CHECK_TYPE (FLOATP (x) || INTEGERP (x), Qnumberp, x);
}
#define CHECK_NUMBER_OR_FLOAT_COERCE_MARKER(x) \
do { \
if (MARKERP (x)) \
XSETFASTINT (x, marker_position (x)); \
else \
CHECK_TYPE (INTEGERP (x) || FLOATP (x), Qnumber_or_marker_p, x); \
} while (false)
/* Since we can't assign directly to the CAR or CDR fields of a cons
cell, use these when checking that those fields contain numbers. */
INLINE void
CHECK_NUMBER_CAR (Lisp_Object x)
{
Lisp_Object tmp = XCAR (x);
CHECK_NUMBER (tmp);
XSETCAR (x, tmp);
}
INLINE void
CHECK_NUMBER_CDR (Lisp_Object x)
{
Lisp_Object tmp = XCDR (x);
CHECK_NUMBER (tmp);
XSETCDR (x, tmp);
}
\f
/* Define a built-in function for calling from Lisp.
`lname' should be the name to give the function in Lisp,
as a null-terminated C string.
`fnname' should be the name of the function in C.
By convention, it starts with F.
`sname' should be the name for the C constant structure
that records information on this function for internal use.
By convention, it should be the same as `fnname' but with S instead of F.
It's too bad that C macros can't compute this from `fnname'.
`minargs' should be a number, the minimum number of arguments allowed.
`maxargs' should be a number, the maximum number of arguments allowed,
or else MANY or UNEVALLED.
MANY means pass a vector of evaluated arguments,
in the form of an integer number-of-arguments
followed by the address of a vector of Lisp_Objects
which contains the argument values.
UNEVALLED means pass the list of unevaluated arguments
`intspec' says how interactive arguments are to be fetched.
If the string starts with a `(', `intspec' is evaluated and the resulting
list is the list of arguments.
If it's a string that doesn't start with `(', the value should follow
the one of the doc string for `interactive'.
A null string means call interactively with no arguments.
`doc' is documentation for the user. */
/* This version of DEFUN declares a function prototype with the right
arguments, so we can catch errors with maxargs at compile-time. */
#ifdef _MSC_VER
#define DEFUN(lname, fnname, sname, minargs, maxargs, intspec, doc) \
Lisp_Object fnname DEFUN_ARGS_ ## maxargs ; \
static struct Lisp_Subr alignas (GCALIGNMENT) sname = \
{ { (PVEC_SUBR << PSEUDOVECTOR_AREA_BITS) \
| (sizeof (struct Lisp_Subr) / sizeof (EMACS_INT)) }, \
{ (Lisp_Object (__cdecl *)(void))fnname }, \
minargs, maxargs, lname, intspec, 0}; \
Lisp_Object fnname
#else /* not _MSC_VER */
#define DEFUN(lname, fnname, sname, minargs, maxargs, intspec, doc) \
static struct Lisp_Subr alignas (GCALIGNMENT) sname = \
{ { PVEC_SUBR << PSEUDOVECTOR_AREA_BITS }, \
{ .a ## maxargs = fnname }, \
minargs, maxargs, lname, intspec, 0}; \
Lisp_Object fnname
#endif
/* True if OBJ is a Lisp function. */
INLINE bool
FUNCTIONP (Lisp_Object obj)
{
return functionp (obj);
}
/* defsubr (Sname);
is how we define the symbol for function `name' at start-up time. */
extern void defsubr (struct Lisp_Subr *);
enum maxargs
{
MANY = -2,
UNEVALLED = -1
};
/* Call a function F that accepts many args, passing it ARRAY's elements. */
#define CALLMANY(f, array) (f) (ARRAYELTS (array), array)
/* Call a function F that accepts many args, passing it the remaining args,
E.g., 'return CALLN (Fformat, fmt, text);' is less error-prone than
'{ Lisp_Object a[2]; a[0] = fmt; a[1] = text; return Fformat (2, a); }'.
CALLN is overkill for simple usages like 'Finsert (1, &text);'. */
#define CALLN(f, ...) CALLMANY (f, ((Lisp_Object []) {__VA_ARGS__}))
extern void defvar_lisp (struct Lisp_Objfwd *, const char *, Lisp_Object *);
extern void defvar_lisp_nopro (struct Lisp_Objfwd *, const char *, Lisp_Object *);
extern void defvar_bool (struct Lisp_Boolfwd *, const char *, bool *);
extern void defvar_int (struct Lisp_Intfwd *, const char *, EMACS_INT *);
extern void defvar_kboard (struct Lisp_Kboard_Objfwd *, const char *, int);
/* Macros we use to define forwarded Lisp variables.
These are used in the syms_of_FILENAME functions.
An ordinary (not in buffer_defaults, per-buffer, or per-keyboard)
lisp variable is actually a field in `struct emacs_globals'. The
field's name begins with "f_", which is a convention enforced by
these macros. Each such global has a corresponding #define in
globals.h; the plain name should be used in the code.
E.g., the global "cons_cells_consed" is declared as "int
f_cons_cells_consed" in globals.h, but there is a define:
#define cons_cells_consed globals.f_cons_cells_consed
All C code uses the `cons_cells_consed' name. This is all done
this way to support indirection for multi-threaded Emacs. */
#define DEFVAR_LISP(lname, vname, doc) \
do { \
static struct Lisp_Objfwd o_fwd; \
defvar_lisp (&o_fwd, lname, &globals.f_ ## vname); \
} while (false)
#define DEFVAR_LISP_NOPRO(lname, vname, doc) \
do { \
static struct Lisp_Objfwd o_fwd; \
defvar_lisp_nopro (&o_fwd, lname, &globals.f_ ## vname); \
} while (false)
#define DEFVAR_BOOL(lname, vname, doc) \
do { \
static struct Lisp_Boolfwd b_fwd; \
defvar_bool (&b_fwd, lname, &globals.f_ ## vname); \
} while (false)
#define DEFVAR_INT(lname, vname, doc) \
do { \
static struct Lisp_Intfwd i_fwd; \
defvar_int (&i_fwd, lname, &globals.f_ ## vname); \
} while (false)
#define DEFVAR_BUFFER_DEFAULTS(lname, vname, doc) \
do { \
static struct Lisp_Objfwd o_fwd; \
defvar_lisp_nopro (&o_fwd, lname, &BVAR (&buffer_defaults, vname)); \
} while (false)
#define DEFVAR_KBOARD(lname, vname, doc) \
do { \
static struct Lisp_Kboard_Objfwd ko_fwd; \
defvar_kboard (&ko_fwd, lname, offsetof (KBOARD, vname ## _)); \
} while (false)
\f
/* Save and restore the instruction and environment pointers,
without affecting the signal mask. */
#ifdef HAVE__SETJMP
typedef jmp_buf sys_jmp_buf;
# define sys_setjmp(j) _setjmp (j)
# define sys_longjmp(j, v) _longjmp (j, v)
#elif defined HAVE_SIGSETJMP
typedef sigjmp_buf sys_jmp_buf;
# define sys_setjmp(j) sigsetjmp (j, 0)
# define sys_longjmp(j, v) siglongjmp (j, v)
#else
/* A platform that uses neither _longjmp nor siglongjmp; assume
longjmp does not affect the sigmask. */
typedef jmp_buf sys_jmp_buf;
# define sys_setjmp(j) setjmp (j)
# define sys_longjmp(j, v) longjmp (j, v)
#endif
\f
/* Elisp uses several stacks:
- the C stack.
- the bytecode stack: used internally by the bytecode interpreter.
Allocated from the C stack.
- The specpdl stack: keeps track of active unwind-protect and
dynamic-let-bindings. Allocated from the `specpdl' array, a manually
managed stack.
- The handler stack: keeps track of active catch tags and condition-case
handlers. Allocated in a manually managed stack implemented by a
doubly-linked list allocated via xmalloc and never freed. */
/* Structure for recording Lisp call stack for backtrace purposes. */
/* The special binding stack holds the outer values of variables while
they are bound by a function application or a let form, stores the
code to be executed for unwind-protect forms.
NOTE: The specbinding union is defined here, because SPECPDL_INDEX is
used all over the place, needs to be fast, and needs to know the size of
union specbinding. But only eval.c should access it. */
enum specbind_tag {
SPECPDL_UNWIND, /* An unwind_protect function on Lisp_Object. */
SPECPDL_UNWIND_PTR, /* Likewise, on void *. */
SPECPDL_UNWIND_INT, /* Likewise, on int. */
SPECPDL_UNWIND_VOID, /* Likewise, with no arg. */
SPECPDL_BACKTRACE, /* An element of the backtrace. */
SPECPDL_LET, /* A plain and simple dynamic let-binding. */
/* Tags greater than SPECPDL_LET must be "subkinds" of LET. */
SPECPDL_LET_LOCAL, /* A buffer-local let-binding. */
SPECPDL_LET_DEFAULT /* A global binding for a localized var. */
};
union specbinding
{
ENUM_BF (specbind_tag) kind : CHAR_BIT;
struct {
ENUM_BF (specbind_tag) kind : CHAR_BIT;
void (*func) (Lisp_Object);
Lisp_Object arg;
} unwind;
struct {
ENUM_BF (specbind_tag) kind : CHAR_BIT;
void (*func) (void *);
void *arg;
} unwind_ptr;
struct {
ENUM_BF (specbind_tag) kind : CHAR_BIT;
void (*func) (int);
int arg;
} unwind_int;
struct {
ENUM_BF (specbind_tag) kind : CHAR_BIT;
void (*func) (void);
} unwind_void;
struct {
ENUM_BF (specbind_tag) kind : CHAR_BIT;
/* `where' is not used in the case of SPECPDL_LET. */
Lisp_Object symbol, old_value, where;
} let;
struct {
ENUM_BF (specbind_tag) kind : CHAR_BIT;
bool_bf debug_on_exit : 1;
Lisp_Object function;
Lisp_Object *args;
ptrdiff_t nargs;
} bt;
};
extern union specbinding *specpdl;
extern union specbinding *specpdl_ptr;
extern ptrdiff_t specpdl_size;
INLINE ptrdiff_t
SPECPDL_INDEX (void)
{
return specpdl_ptr - specpdl;
}
/* This structure helps implement the `catch/throw' and `condition-case/signal'
control structures. A struct handler contains all the information needed to
restore the state of the interpreter after a non-local jump.
handler structures are chained together in a doubly linked list; the `next'
member points to the next outer catchtag and the `nextfree' member points in
the other direction to the next inner element (which is typically the next
free element since we mostly use it on the deepest handler).
A call like (throw TAG VAL) searches for a catchtag whose `tag_or_ch'
member is TAG, and then unbinds to it. The `val' member is used to
hold VAL while the stack is unwound; `val' is returned as the value
of the catch form.
All the other members are concerned with restoring the interpreter
state.
Members are volatile if their values need to survive _longjmp when
a 'struct handler' is a local variable. */
enum handlertype { CATCHER, CONDITION_CASE };
struct handler
{
enum handlertype type;
Lisp_Object tag_or_ch;
Lisp_Object val;
struct handler *next;
struct handler *nextfree;
/* The bytecode interpreter can have several handlers active at the same
time, so when we longjmp to one of them, it needs to know which handler
this was and what was the corresponding internal state. This is stored
here, and when we longjmp we make sure that handlerlist points to the
proper handler. */
Lisp_Object *bytecode_top;
int bytecode_dest;
/* Most global vars are reset to their value via the specpdl mechanism,
but a few others are handled by storing their value here. */
#if true /* GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS, but defined later. */
struct gcpro *gcpro;
#endif
sys_jmp_buf jmp;
EMACS_INT lisp_eval_depth;
ptrdiff_t pdlcount;
int poll_suppress_count;
int interrupt_input_blocked;
struct byte_stack *byte_stack;
};
/* Fill in the components of c, and put it on the list. */
#define PUSH_HANDLER(c, tag_ch_val, handlertype) \
if (handlerlist->nextfree) \
(c) = handlerlist->nextfree; \
else \
{ \
(c) = xmalloc (sizeof (struct handler)); \
(c)->nextfree = NULL; \
handlerlist->nextfree = (c); \
} \
(c)->type = (handlertype); \
(c)->tag_or_ch = (tag_ch_val); \
(c)->val = Qnil; \
(c)->next = handlerlist; \
(c)->lisp_eval_depth = lisp_eval_depth; \
(c)->pdlcount = SPECPDL_INDEX (); \
(c)->poll_suppress_count = poll_suppress_count; \
(c)->interrupt_input_blocked = interrupt_input_blocked;\
(c)->gcpro = gcprolist; \
(c)->byte_stack = byte_stack_list; \
handlerlist = (c);
extern Lisp_Object memory_signal_data;
/* An address near the bottom of the stack.
Tells GC how to save a copy of the stack. */
extern char *stack_bottom;
/* Check quit-flag and quit if it is non-nil.
Typing C-g does not directly cause a quit; it only sets Vquit_flag.
So the program needs to do QUIT at times when it is safe to quit.
Every loop that might run for a long time or might not exit
ought to do QUIT at least once, at a safe place.
Unless that is impossible, of course.
But it is very desirable to avoid creating loops where QUIT is impossible.
Exception: if you set immediate_quit to true,
then the handler that responds to the C-g does the quit itself.
This is a good thing to do around a loop that has no side effects
and (in particular) cannot call arbitrary Lisp code.
If quit-flag is set to `kill-emacs' the SIGINT handler has received
a request to exit Emacs when it is safe to do. */
extern void process_pending_signals (void);
extern bool volatile pending_signals;
extern void process_quit_flag (void);
#define QUIT \
do { \
if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) \
process_quit_flag (); \
else if (pending_signals) \
process_pending_signals (); \
} while (false)
/* True if ought to quit now. */
#define QUITP (!NILP (Vquit_flag) && NILP (Vinhibit_quit))
\f
extern Lisp_Object Vascii_downcase_table;
extern Lisp_Object Vascii_canon_table;
\f
/* Structure for recording stack slots that need marking. */
/* This is a chain of structures, each of which points at a Lisp_Object
variable whose value should be marked in garbage collection.
Normally every link of the chain is an automatic variable of a function,
and its `val' points to some argument or local variable of the function.
On exit to the function, the chain is set back to the value it had on entry.
This way, no link remains in the chain when the stack frame containing the
link disappears.
Every function that can call Feval must protect in this fashion all
Lisp_Object variables whose contents will be used again. */
extern struct gcpro *gcprolist;
struct gcpro
{
struct gcpro *next;
/* Address of first protected variable. */
volatile Lisp_Object *var;
/* Number of consecutive protected variables. */
ptrdiff_t nvars;
#ifdef DEBUG_GCPRO
/* File name where this record is used. */
const char *name;
/* Line number in this file. */
int lineno;
/* Index in the local chain of records. */
int idx;
/* Nesting level. */
int level;
#endif
};
/* Values of GC_MARK_STACK during compilation:
0 Use GCPRO as before
1 Do the real thing, make GCPROs and UNGCPRO no-ops.
2 Mark the stack, and check that everything GCPRO'd is
marked.
3 Mark using GCPRO's, mark stack last, and count how many
dead objects are kept alive.
Formerly, method 0 was used. Currently, method 1 is used unless
otherwise specified by hand when building, e.g.,
"make CPPFLAGS='-DGC_MARK_STACK=GC_USE_GCPROS_AS_BEFORE'".
Methods 2 and 3 are present mainly to debug the transition from 0 to 1. */
#define GC_USE_GCPROS_AS_BEFORE 0
#define GC_MAKE_GCPROS_NOOPS 1
#define GC_MARK_STACK_CHECK_GCPROS 2
#define GC_USE_GCPROS_CHECK_ZOMBIES 3
#ifndef GC_MARK_STACK
#define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS
#endif
/* Whether we do the stack marking manually. */
#define BYTE_MARK_STACK !(GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS \
|| GC_MARK_STACK == GC_MARK_STACK_CHECK_GCPROS)
#if GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS
/* Do something silly with gcproN vars just so gcc shuts up. */
/* You get warnings from MIPSPro... */
#define GCPRO1(varname) ((void) gcpro1)
#define GCPRO2(varname1, varname2) ((void) gcpro2, (void) gcpro1)
#define GCPRO3(varname1, varname2, varname3) \
((void) gcpro3, (void) gcpro2, (void) gcpro1)
#define GCPRO4(varname1, varname2, varname3, varname4) \
((void) gcpro4, (void) gcpro3, (void) gcpro2, (void) gcpro1)
#define GCPRO5(varname1, varname2, varname3, varname4, varname5) \
((void) gcpro5, (void) gcpro4, (void) gcpro3, (void) gcpro2, (void) gcpro1)
#define GCPRO6(varname1, varname2, varname3, varname4, varname5, varname6) \
((void) gcpro6, (void) gcpro5, (void) gcpro4, (void) gcpro3, (void) gcpro2, \
(void) gcpro1)
#define GCPRO7(a, b, c, d, e, f, g) (GCPRO6 (a, b, c, d, e, f), (void) gcpro7)
#define UNGCPRO ((void) 0)
#else /* GC_MARK_STACK != GC_MAKE_GCPROS_NOOPS */
#ifndef DEBUG_GCPRO
#define GCPRO1(a) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcprolist = &gcpro1; }
#define GCPRO2(a, b) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
gcprolist = &gcpro2; }
#define GCPRO3(a, b, c) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
gcprolist = &gcpro3; }
#define GCPRO4(a, b, c, d) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
gcprolist = &gcpro4; }
#define GCPRO5(a, b, c, d, e) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
gcpro5.next = &gcpro4; gcpro5.var = &(e); gcpro5.nvars = 1; \
gcprolist = &gcpro5; }
#define GCPRO6(a, b, c, d, e, f) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
gcpro5.next = &gcpro4; gcpro5.var = &(e); gcpro5.nvars = 1; \
gcpro6.next = &gcpro5; gcpro6.var = &(f); gcpro6.nvars = 1; \
gcprolist = &gcpro6; }
#define GCPRO7(a, b, c, d, e, f, g) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
gcpro5.next = &gcpro4; gcpro5.var = &(e); gcpro5.nvars = 1; \
gcpro6.next = &gcpro5; gcpro6.var = &(f); gcpro6.nvars = 1; \
gcpro7.next = &gcpro6; gcpro7.var = &(g); gcpro7.nvars = 1; \
gcprolist = &gcpro7; }
#define UNGCPRO (gcprolist = gcpro1.next)
#else /* !DEBUG_GCPRO */
extern int gcpro_level;
#define GCPRO1(a) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
gcpro1.level = gcpro_level++; \
gcprolist = &gcpro1; }
#define GCPRO2(a, b) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
gcpro1.level = gcpro_level; \
gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
gcpro2.name = __FILE__; gcpro2.lineno = __LINE__; gcpro2.idx = 2; \
gcpro2.level = gcpro_level++; \
gcprolist = &gcpro2; }
#define GCPRO3(a, b, c) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
gcpro1.level = gcpro_level; \
gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
gcpro2.name = __FILE__; gcpro2.lineno = __LINE__; gcpro2.idx = 2; \
gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
gcpro3.name = __FILE__; gcpro3.lineno = __LINE__; gcpro3.idx = 3; \
gcpro3.level = gcpro_level++; \
gcprolist = &gcpro3; }
#define GCPRO4(a, b, c, d) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
gcpro1.level = gcpro_level; \
gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
gcpro2.name = __FILE__; gcpro2.lineno = __LINE__; gcpro2.idx = 2; \
gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
gcpro3.name = __FILE__; gcpro3.lineno = __LINE__; gcpro3.idx = 3; \
gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
gcpro4.name = __FILE__; gcpro4.lineno = __LINE__; gcpro4.idx = 4; \
gcpro4.level = gcpro_level++; \
gcprolist = &gcpro4; }
#define GCPRO5(a, b, c, d, e) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
gcpro1.level = gcpro_level; \
gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
gcpro2.name = __FILE__; gcpro2.lineno = __LINE__; gcpro2.idx = 2; \
gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
gcpro3.name = __FILE__; gcpro3.lineno = __LINE__; gcpro3.idx = 3; \
gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
gcpro4.name = __FILE__; gcpro4.lineno = __LINE__; gcpro4.idx = 4; \
gcpro5.next = &gcpro4; gcpro5.var = &(e); gcpro5.nvars = 1; \
gcpro5.name = __FILE__; gcpro5.lineno = __LINE__; gcpro5.idx = 5; \
gcpro5.level = gcpro_level++; \
gcprolist = &gcpro5; }
#define GCPRO6(a, b, c, d, e, f) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
gcpro1.level = gcpro_level; \
gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
gcpro2.name = __FILE__; gcpro2.lineno = __LINE__; gcpro2.idx = 2; \
gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
gcpro3.name = __FILE__; gcpro3.lineno = __LINE__; gcpro3.idx = 3; \
gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
gcpro4.name = __FILE__; gcpro4.lineno = __LINE__; gcpro4.idx = 4; \
gcpro5.next = &gcpro4; gcpro5.var = &(e); gcpro5.nvars = 1; \
gcpro5.name = __FILE__; gcpro5.lineno = __LINE__; gcpro5.idx = 5; \
gcpro6.next = &gcpro5; gcpro6.var = &(f); gcpro6.nvars = 1; \
gcpro6.name = __FILE__; gcpro6.lineno = __LINE__; gcpro6.idx = 6; \
gcpro6.level = gcpro_level++; \
gcprolist = &gcpro6; }
#define GCPRO7(a, b, c, d, e, f, g) \
{ gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
gcpro1.level = gcpro_level; \
gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
gcpro2.name = __FILE__; gcpro2.lineno = __LINE__; gcpro2.idx = 2; \
gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
gcpro3.name = __FILE__; gcpro3.lineno = __LINE__; gcpro3.idx = 3; \
gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
gcpro4.name = __FILE__; gcpro4.lineno = __LINE__; gcpro4.idx = 4; \
gcpro5.next = &gcpro4; gcpro5.var = &(e); gcpro5.nvars = 1; \
gcpro5.name = __FILE__; gcpro5.lineno = __LINE__; gcpro5.idx = 5; \
gcpro6.next = &gcpro5; gcpro6.var = &(f); gcpro6.nvars = 1; \
gcpro6.name = __FILE__; gcpro6.lineno = __LINE__; gcpro6.idx = 6; \
gcpro7.next = &gcpro6; gcpro7.var = &(g); gcpro7.nvars = 1; \
gcpro7.name = __FILE__; gcpro7.lineno = __LINE__; gcpro7.idx = 7; \
gcpro7.level = gcpro_level++; \
gcprolist = &gcpro7; }
#define UNGCPRO \
(--gcpro_level != gcpro1.level \
? emacs_abort () \
: (void) (gcprolist = gcpro1.next))
#endif /* DEBUG_GCPRO */
#endif /* GC_MARK_STACK != GC_MAKE_GCPROS_NOOPS */
/* Evaluate expr, UNGCPRO, and then return the value of expr. */
#define RETURN_UNGCPRO(expr) \
do \
{ \
Lisp_Object ret_ungc_val; \
ret_ungc_val = (expr); \
UNGCPRO; \
return ret_ungc_val; \
} \
while (false)
/* Call staticpro (&var) to protect static variable `var'. */
void staticpro (Lisp_Object *);
\f
/* Forward declarations for prototypes. */
struct window;
struct frame;
/* Copy COUNT Lisp_Objects from ARGS to contents of V starting from OFFSET. */
INLINE void
vcopy (Lisp_Object v, ptrdiff_t offset, Lisp_Object *args, ptrdiff_t count)
{
eassert (0 <= offset && 0 <= count && offset + count <= ASIZE (v));
memcpy (XVECTOR (v)->contents + offset, args, count * sizeof *args);
}
/* Functions to modify hash tables. */
INLINE void
set_hash_key_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
{
gc_aset (h->key_and_value, 2 * idx, val);
}
INLINE void
set_hash_value_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
{
gc_aset (h->key_and_value, 2 * idx + 1, val);
}
/* Use these functions to set Lisp_Object
or pointer slots of struct Lisp_Symbol. */
INLINE void
set_symbol_function (Lisp_Object sym, Lisp_Object function)
{
XSYMBOL (sym)->function = function;
}
INLINE void
set_symbol_plist (Lisp_Object sym, Lisp_Object plist)
{
XSYMBOL (sym)->plist = plist;
}
INLINE void
set_symbol_next (Lisp_Object sym, struct Lisp_Symbol *next)
{
XSYMBOL (sym)->next = next;
}
/* Buffer-local (also frame-local) variable access functions. */
INLINE int
blv_found (struct Lisp_Buffer_Local_Value *blv)
{
eassert (blv->found == !EQ (blv->defcell, blv->valcell));
return blv->found;
}
/* Set overlay's property list. */
INLINE void
set_overlay_plist (Lisp_Object overlay, Lisp_Object plist)
{
XOVERLAY (overlay)->plist = plist;
}
/* Get text properties of S. */
INLINE INTERVAL
string_intervals (Lisp_Object s)
{
return XSTRING (s)->intervals;
}
/* Set text properties of S to I. */
INLINE void
set_string_intervals (Lisp_Object s, INTERVAL i)
{
XSTRING (s)->intervals = i;
}
/* Set a Lisp slot in TABLE to VAL. Most code should use this instead
of setting slots directly. */
INLINE void
set_char_table_defalt (Lisp_Object table, Lisp_Object val)
{
XCHAR_TABLE (table)->defalt = val;
}
INLINE void
set_char_table_purpose (Lisp_Object table, Lisp_Object val)
{
XCHAR_TABLE (table)->purpose = val;
}
/* Set different slots in (sub)character tables. */
INLINE void
set_char_table_extras (Lisp_Object table, ptrdiff_t idx, Lisp_Object val)
{
eassert (0 <= idx && idx < CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (table)));
XCHAR_TABLE (table)->extras[idx] = val;
}
INLINE void
set_char_table_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val)
{
eassert (0 <= idx && idx < (1 << CHARTAB_SIZE_BITS_0));
XCHAR_TABLE (table)->contents[idx] = val;
}
INLINE void
set_sub_char_table_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val)
{
XSUB_CHAR_TABLE (table)->contents[idx] = val;
}
/* Defined in data.c. */
extern Lisp_Object indirect_function (Lisp_Object);
extern Lisp_Object find_symbol_value (Lisp_Object);
enum Arith_Comparison {
ARITH_EQUAL,
ARITH_NOTEQUAL,
ARITH_LESS,
ARITH_GRTR,
ARITH_LESS_OR_EQUAL,
ARITH_GRTR_OR_EQUAL
};
extern Lisp_Object arithcompare (Lisp_Object num1, Lisp_Object num2,
enum Arith_Comparison comparison);
/* Convert the integer I to an Emacs representation, either the integer
itself, or a cons of two or three integers, or if all else fails a float.
I should not have side effects. */
#define INTEGER_TO_CONS(i) \
(! FIXNUM_OVERFLOW_P (i) \
? make_number (i) \
: ! ((FIXNUM_OVERFLOW_P (INTMAX_MIN >> 16) \
|| FIXNUM_OVERFLOW_P (UINTMAX_MAX >> 16)) \
&& FIXNUM_OVERFLOW_P ((i) >> 16)) \
? Fcons (make_number ((i) >> 16), make_number ((i) & 0xffff)) \
: ! ((FIXNUM_OVERFLOW_P (INTMAX_MIN >> 16 >> 24) \
|| FIXNUM_OVERFLOW_P (UINTMAX_MAX >> 16 >> 24)) \
&& FIXNUM_OVERFLOW_P ((i) >> 16 >> 24)) \
? Fcons (make_number ((i) >> 16 >> 24), \
Fcons (make_number ((i) >> 16 & 0xffffff), \
make_number ((i) & 0xffff))) \
: make_float (i))
/* Convert the Emacs representation CONS back to an integer of type
TYPE, storing the result the variable VAR. Signal an error if CONS
is not a valid representation or is out of range for TYPE. */
#define CONS_TO_INTEGER(cons, type, var) \
(TYPE_SIGNED (type) \
? ((var) = cons_to_signed (cons, TYPE_MINIMUM (type), TYPE_MAXIMUM (type))) \
: ((var) = cons_to_unsigned (cons, TYPE_MAXIMUM (type))))
extern intmax_t cons_to_signed (Lisp_Object, intmax_t, intmax_t);
extern uintmax_t cons_to_unsigned (Lisp_Object, uintmax_t);
extern struct Lisp_Symbol *indirect_variable (struct Lisp_Symbol *);
extern _Noreturn void args_out_of_range (Lisp_Object, Lisp_Object);
extern _Noreturn void args_out_of_range_3 (Lisp_Object, Lisp_Object,
Lisp_Object);
extern Lisp_Object do_symval_forwarding (union Lisp_Fwd *);
extern void set_internal (Lisp_Object, Lisp_Object, Lisp_Object, bool);
extern void syms_of_data (void);
extern void swap_in_global_binding (struct Lisp_Symbol *);
/* Defined in cmds.c */
extern void syms_of_cmds (void);
extern void keys_of_cmds (void);
/* Defined in coding.c. */
extern Lisp_Object detect_coding_system (const unsigned char *, ptrdiff_t,
ptrdiff_t, bool, bool, Lisp_Object);
extern void init_coding (void);
extern void init_coding_once (void);
extern void syms_of_coding (void);
/* Defined in character.c. */
extern ptrdiff_t chars_in_text (const unsigned char *, ptrdiff_t);
extern ptrdiff_t multibyte_chars_in_text (const unsigned char *, ptrdiff_t);
extern void syms_of_character (void);
/* Defined in charset.c. */
extern void init_charset (void);
extern void init_charset_once (void);
extern void syms_of_charset (void);
/* Structure forward declarations. */
struct charset;
/* Defined in syntax.c. */
extern void init_syntax_once (void);
extern void syms_of_syntax (void);
/* Defined in fns.c. */
enum { NEXT_ALMOST_PRIME_LIMIT = 11 };
extern EMACS_INT next_almost_prime (EMACS_INT) ATTRIBUTE_CONST;
extern Lisp_Object larger_vector (Lisp_Object, ptrdiff_t, ptrdiff_t);
extern void sweep_weak_hash_tables (void);
EMACS_UINT hash_string (char const *, ptrdiff_t);
EMACS_UINT sxhash (Lisp_Object, int);
Lisp_Object make_hash_table (struct hash_table_test, Lisp_Object, Lisp_Object,
Lisp_Object, Lisp_Object);
ptrdiff_t hash_lookup (struct Lisp_Hash_Table *, Lisp_Object, EMACS_UINT *);
ptrdiff_t hash_put (struct Lisp_Hash_Table *, Lisp_Object, Lisp_Object,
EMACS_UINT);
extern struct hash_table_test hashtest_eql, hashtest_equal;
extern void validate_subarray (Lisp_Object, Lisp_Object, Lisp_Object,
ptrdiff_t, ptrdiff_t *, ptrdiff_t *);
extern Lisp_Object substring_both (Lisp_Object, ptrdiff_t, ptrdiff_t,
ptrdiff_t, ptrdiff_t);
extern Lisp_Object merge (Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object do_yes_or_no_p (Lisp_Object);
extern Lisp_Object concat2 (Lisp_Object, Lisp_Object);
extern Lisp_Object concat3 (Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object nconc2 (Lisp_Object, Lisp_Object);
extern Lisp_Object assq_no_quit (Lisp_Object, Lisp_Object);
extern Lisp_Object assoc_no_quit (Lisp_Object, Lisp_Object);
extern void clear_string_char_byte_cache (void);
extern ptrdiff_t string_char_to_byte (Lisp_Object, ptrdiff_t);
extern ptrdiff_t string_byte_to_char (Lisp_Object, ptrdiff_t);
extern Lisp_Object string_to_multibyte (Lisp_Object);
extern Lisp_Object string_make_unibyte (Lisp_Object);
extern void syms_of_fns (void);
/* Defined in floatfns.c. */
extern void syms_of_floatfns (void);
extern Lisp_Object fmod_float (Lisp_Object x, Lisp_Object y);
/* Defined in fringe.c. */
extern void syms_of_fringe (void);
extern void init_fringe (void);
#ifdef HAVE_WINDOW_SYSTEM
extern void mark_fringe_data (void);
extern void init_fringe_once (void);
#endif /* HAVE_WINDOW_SYSTEM */
/* Defined in image.c. */
extern int x_bitmap_mask (struct frame *, ptrdiff_t);
extern void reset_image_types (void);
extern void syms_of_image (void);
/* Defined in insdel.c. */
extern void move_gap_both (ptrdiff_t, ptrdiff_t);
extern _Noreturn void buffer_overflow (void);
extern void make_gap (ptrdiff_t);
extern void make_gap_1 (struct buffer *, ptrdiff_t);
extern ptrdiff_t copy_text (const unsigned char *, unsigned char *,
ptrdiff_t, bool, bool);
extern int count_combining_before (const unsigned char *,
ptrdiff_t, ptrdiff_t, ptrdiff_t);
extern int count_combining_after (const unsigned char *,
ptrdiff_t, ptrdiff_t, ptrdiff_t);
extern void insert (const char *, ptrdiff_t);
extern void insert_and_inherit (const char *, ptrdiff_t);
extern void insert_1_both (const char *, ptrdiff_t, ptrdiff_t,
bool, bool, bool);
extern void insert_from_gap (ptrdiff_t, ptrdiff_t, bool text_at_gap_tail);
extern void insert_from_string (Lisp_Object, ptrdiff_t, ptrdiff_t,
ptrdiff_t, ptrdiff_t, bool);
extern void insert_from_buffer (struct buffer *, ptrdiff_t, ptrdiff_t, bool);
extern void insert_char (int);
extern void insert_string (const char *);
extern void insert_before_markers (const char *, ptrdiff_t);
extern void insert_before_markers_and_inherit (const char *, ptrdiff_t);
extern void insert_from_string_before_markers (Lisp_Object, ptrdiff_t,
ptrdiff_t, ptrdiff_t,
ptrdiff_t, bool);
extern void del_range (ptrdiff_t, ptrdiff_t);
extern Lisp_Object del_range_1 (ptrdiff_t, ptrdiff_t, bool, bool);
extern void del_range_byte (ptrdiff_t, ptrdiff_t, bool);
extern void del_range_both (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, bool);
extern Lisp_Object del_range_2 (ptrdiff_t, ptrdiff_t,
ptrdiff_t, ptrdiff_t, bool);
extern void modify_text (ptrdiff_t, ptrdiff_t);
extern void prepare_to_modify_buffer (ptrdiff_t, ptrdiff_t, ptrdiff_t *);
extern void prepare_to_modify_buffer_1 (ptrdiff_t, ptrdiff_t, ptrdiff_t *);
extern void invalidate_buffer_caches (struct buffer *, ptrdiff_t, ptrdiff_t);
extern void signal_after_change (ptrdiff_t, ptrdiff_t, ptrdiff_t);
extern void adjust_after_insert (ptrdiff_t, ptrdiff_t, ptrdiff_t,
ptrdiff_t, ptrdiff_t);
extern void adjust_markers_for_delete (ptrdiff_t, ptrdiff_t,
ptrdiff_t, ptrdiff_t);
extern void replace_range (ptrdiff_t, ptrdiff_t, Lisp_Object, bool, bool, bool);
extern void replace_range_2 (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t,
const char *, ptrdiff_t, ptrdiff_t, bool);
extern void syms_of_insdel (void);
/* Defined in dispnew.c. */
#if (defined PROFILING \
&& (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
_Noreturn void __executable_start (void);
#endif
extern Lisp_Object Vwindow_system;
extern Lisp_Object sit_for (Lisp_Object, bool, int);
/* Defined in xdisp.c. */
extern bool noninteractive_need_newline;
extern Lisp_Object echo_area_buffer[2];
extern void add_to_log (const char *, Lisp_Object, Lisp_Object);
extern void check_message_stack (void);
extern void setup_echo_area_for_printing (bool);
extern bool push_message (void);
extern void pop_message_unwind (void);
extern Lisp_Object restore_message_unwind (Lisp_Object);
extern void restore_message (void);
extern Lisp_Object current_message (void);
extern void clear_message (bool, bool);
extern void message (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2);
extern void message1 (const char *);
extern void message1_nolog (const char *);
extern void message3 (Lisp_Object);
extern void message3_nolog (Lisp_Object);
extern void message_dolog (const char *, ptrdiff_t, bool, bool);
extern void message_with_string (const char *, Lisp_Object, bool);
extern void message_log_maybe_newline (void);
extern void update_echo_area (void);
extern void truncate_echo_area (ptrdiff_t);
extern void redisplay (void);
void set_frame_cursor_types (struct frame *, Lisp_Object);
extern void syms_of_xdisp (void);
extern void init_xdisp (void);
extern Lisp_Object safe_eval (Lisp_Object);
extern bool pos_visible_p (struct window *, ptrdiff_t, int *,
int *, int *, int *, int *, int *);
/* Defined in xsettings.c. */
extern void syms_of_xsettings (void);
/* Defined in vm-limit.c. */
extern void memory_warnings (void *, void (*warnfun) (const char *));
/* Defined in character.c. */
extern void parse_str_as_multibyte (const unsigned char *, ptrdiff_t,
ptrdiff_t *, ptrdiff_t *);
/* Defined in alloc.c. */
extern void check_pure_size (void);
extern void free_misc (Lisp_Object);
extern void allocate_string_data (struct Lisp_String *, EMACS_INT, EMACS_INT);
extern void malloc_warning (const char *);
extern _Noreturn void memory_full (size_t);
extern _Noreturn void buffer_memory_full (ptrdiff_t);
extern bool survives_gc_p (Lisp_Object);
extern void mark_object (Lisp_Object);
#if defined REL_ALLOC && !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
extern void refill_memory_reserve (void);
#endif
extern const char *pending_malloc_warning;
extern Lisp_Object zero_vector;
extern Lisp_Object *stack_base;
extern EMACS_INT consing_since_gc;
extern EMACS_INT gc_relative_threshold;
extern EMACS_INT memory_full_cons_threshold;
extern Lisp_Object list1 (Lisp_Object);
extern Lisp_Object list2 (Lisp_Object, Lisp_Object);
extern Lisp_Object list3 (Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object list4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object list5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object,
Lisp_Object);
enum constype {CONSTYPE_HEAP, CONSTYPE_PURE};
extern Lisp_Object listn (enum constype, ptrdiff_t, Lisp_Object, ...);
/* Build a frequently used 2/3/4-integer lists. */
INLINE Lisp_Object
list2i (EMACS_INT x, EMACS_INT y)
{
return list2 (make_number (x), make_number (y));
}
INLINE Lisp_Object
list3i (EMACS_INT x, EMACS_INT y, EMACS_INT w)
{
return list3 (make_number (x), make_number (y), make_number (w));
}
INLINE Lisp_Object
list4i (EMACS_INT x, EMACS_INT y, EMACS_INT w, EMACS_INT h)
{
return list4 (make_number (x), make_number (y),
make_number (w), make_number (h));
}
extern Lisp_Object make_uninit_bool_vector (EMACS_INT);
extern Lisp_Object bool_vector_fill (Lisp_Object, Lisp_Object);
extern _Noreturn void string_overflow (void);
extern Lisp_Object make_string (const char *, ptrdiff_t);
extern Lisp_Object make_formatted_string (char *, const char *, ...)
ATTRIBUTE_FORMAT_PRINTF (2, 3);
extern Lisp_Object make_unibyte_string (const char *, ptrdiff_t);
/* Make unibyte string from C string when the length isn't known. */
INLINE Lisp_Object
build_unibyte_string (const char *str)
{
return make_unibyte_string (str, strlen (str));
}
extern Lisp_Object make_multibyte_string (const char *, ptrdiff_t, ptrdiff_t);
extern Lisp_Object make_event_array (ptrdiff_t, Lisp_Object *);
extern Lisp_Object make_uninit_string (EMACS_INT);
extern Lisp_Object make_uninit_multibyte_string (EMACS_INT, EMACS_INT);
extern Lisp_Object make_string_from_bytes (const char *, ptrdiff_t, ptrdiff_t);
extern Lisp_Object make_specified_string (const char *,
ptrdiff_t, ptrdiff_t, bool);
extern Lisp_Object make_pure_string (const char *, ptrdiff_t, ptrdiff_t, bool);
extern Lisp_Object make_pure_c_string (const char *, ptrdiff_t);
/* Make a string allocated in pure space, use STR as string data. */
INLINE Lisp_Object
build_pure_c_string (const char *str)
{
return make_pure_c_string (str, strlen (str));
}
/* Make a string from the data at STR, treating it as multibyte if the
data warrants. */
INLINE Lisp_Object
build_string (const char *str)
{
return make_string (str, strlen (str));
}
extern Lisp_Object pure_cons (Lisp_Object, Lisp_Object);
extern void make_byte_code (struct Lisp_Vector *);
extern struct Lisp_Vector *allocate_vector (EMACS_INT);
/* Make an uninitialized vector for SIZE objects. NOTE: you must
be sure that GC cannot happen until the vector is completely
initialized. E.g. the following code is likely to crash:
v = make_uninit_vector (3);
ASET (v, 0, obj0);
ASET (v, 1, Ffunction_can_gc ());
ASET (v, 2, obj1); */
INLINE Lisp_Object
make_uninit_vector (ptrdiff_t size)
{
Lisp_Object v;
struct Lisp_Vector *p;
p = allocate_vector (size);
XSETVECTOR (v, p);
return v;
}
/* Like above, but special for sub char-tables. */
INLINE Lisp_Object
make_uninit_sub_char_table (int depth, int min_char)
{
int slots = SUB_CHAR_TABLE_OFFSET + chartab_size[depth];
Lisp_Object v = make_uninit_vector (slots);
XSETPVECTYPE (XVECTOR (v), PVEC_SUB_CHAR_TABLE);
XSUB_CHAR_TABLE (v)->depth = depth;
XSUB_CHAR_TABLE (v)->min_char = min_char;
return v;
}
extern struct Lisp_Vector *allocate_pseudovector (int, int, int,
enum pvec_type);
/* Allocate partially initialized pseudovector where all Lisp_Object
slots are set to Qnil but the rest (if any) is left uninitialized. */
#define ALLOCATE_PSEUDOVECTOR(type, field, tag) \
((type *) allocate_pseudovector (VECSIZE (type), \
PSEUDOVECSIZE (type, field), \
PSEUDOVECSIZE (type, field), tag))
/* Allocate fully initialized pseudovector where all Lisp_Object
slots are set to Qnil and the rest (if any) is zeroed. */
#define ALLOCATE_ZEROED_PSEUDOVECTOR(type, field, tag) \
((type *) allocate_pseudovector (VECSIZE (type), \
PSEUDOVECSIZE (type, field), \
VECSIZE (type), tag))
extern bool gc_in_progress;
extern bool abort_on_gc;
extern Lisp_Object make_float (double);
extern void display_malloc_warning (void);
extern ptrdiff_t inhibit_garbage_collection (void);
extern Lisp_Object make_save_int_int_int (ptrdiff_t, ptrdiff_t, ptrdiff_t);
extern Lisp_Object make_save_obj_obj_obj_obj (Lisp_Object, Lisp_Object,
Lisp_Object, Lisp_Object);
extern Lisp_Object make_save_ptr (void *);
extern Lisp_Object make_save_ptr_int (void *, ptrdiff_t);
extern Lisp_Object make_save_ptr_ptr (void *, void *);
extern Lisp_Object make_save_funcptr_ptr_obj (void (*) (void), void *,
Lisp_Object);
extern Lisp_Object make_save_memory (Lisp_Object *, ptrdiff_t);
extern void free_save_value (Lisp_Object);
extern Lisp_Object build_overlay (Lisp_Object, Lisp_Object, Lisp_Object);
extern void free_marker (Lisp_Object);
extern void free_cons (struct Lisp_Cons *);
extern void init_alloc_once (void);
extern void init_alloc (void);
extern void syms_of_alloc (void);
extern struct buffer * allocate_buffer (void);
extern int valid_lisp_object_p (Lisp_Object);
extern int relocatable_string_data_p (const char *);
#ifdef GC_CHECK_CONS_LIST
extern void check_cons_list (void);
#else
INLINE void (check_cons_list) (void) { lisp_h_check_cons_list (); }
#endif
#ifdef REL_ALLOC
/* Defined in ralloc.c. */
extern void *r_alloc (void **, size_t) ATTRIBUTE_ALLOC_SIZE ((2));
extern void r_alloc_free (void **);
extern void *r_re_alloc (void **, size_t) ATTRIBUTE_ALLOC_SIZE ((2));
extern void r_alloc_reset_variable (void **, void **);
extern void r_alloc_inhibit_buffer_relocation (int);
#endif
/* Defined in chartab.c. */
extern Lisp_Object copy_char_table (Lisp_Object);
extern Lisp_Object char_table_ref_and_range (Lisp_Object, int,
int *, int *);
extern void char_table_set_range (Lisp_Object, int, int, Lisp_Object);
extern void map_char_table (void (*) (Lisp_Object, Lisp_Object,
Lisp_Object),
Lisp_Object, Lisp_Object, Lisp_Object);
extern void map_char_table_for_charset (void (*c_function) (Lisp_Object, Lisp_Object),
Lisp_Object, Lisp_Object,
Lisp_Object, struct charset *,
unsigned, unsigned);
extern Lisp_Object uniprop_table (Lisp_Object);
extern void syms_of_chartab (void);
/* Defined in print.c. */
extern Lisp_Object Vprin1_to_string_buffer;
extern void debug_print (Lisp_Object) EXTERNALLY_VISIBLE;
extern void temp_output_buffer_setup (const char *);
extern int print_level;
extern void write_string (const char *);
extern void print_error_message (Lisp_Object, Lisp_Object, const char *,
Lisp_Object);
extern Lisp_Object internal_with_output_to_temp_buffer
(const char *, Lisp_Object (*) (Lisp_Object), Lisp_Object);
#define FLOAT_TO_STRING_BUFSIZE 350
extern int float_to_string (char *, double);
extern void init_print_once (void);
extern void syms_of_print (void);
/* Defined in doprnt.c. */
extern ptrdiff_t doprnt (char *, ptrdiff_t, const char *, const char *,
va_list);
extern ptrdiff_t esprintf (char *, char const *, ...)
ATTRIBUTE_FORMAT_PRINTF (2, 3);
extern ptrdiff_t exprintf (char **, ptrdiff_t *, char const *, ptrdiff_t,
char const *, ...)
ATTRIBUTE_FORMAT_PRINTF (5, 6);
extern ptrdiff_t evxprintf (char **, ptrdiff_t *, char const *, ptrdiff_t,
char const *, va_list)
ATTRIBUTE_FORMAT_PRINTF (5, 0);
/* Defined in lread.c. */
extern Lisp_Object check_obarray (Lisp_Object);
extern Lisp_Object intern_1 (const char *, ptrdiff_t);
extern Lisp_Object intern_c_string_1 (const char *, ptrdiff_t);
extern Lisp_Object intern_driver (Lisp_Object, Lisp_Object, Lisp_Object);
extern void init_symbol (Lisp_Object, Lisp_Object);
extern Lisp_Object oblookup (Lisp_Object, const char *, ptrdiff_t, ptrdiff_t);
INLINE void
LOADHIST_ATTACH (Lisp_Object x)
{
if (initialized)
Vcurrent_load_list = Fcons (x, Vcurrent_load_list);
}
extern int openp (Lisp_Object, Lisp_Object, Lisp_Object,
Lisp_Object *, Lisp_Object, bool);
extern Lisp_Object string_to_number (char const *, int, bool);
extern void map_obarray (Lisp_Object, void (*) (Lisp_Object, Lisp_Object),
Lisp_Object);
extern void dir_warning (const char *, Lisp_Object);
extern void init_obarray (void);
extern void init_lread (void);
extern void syms_of_lread (void);
INLINE Lisp_Object
intern (const char *str)
{
return intern_1 (str, strlen (str));
}
INLINE Lisp_Object
intern_c_string (const char *str)
{
return intern_c_string_1 (str, strlen (str));
}
/* Defined in eval.c. */
extern EMACS_INT lisp_eval_depth;
extern Lisp_Object Vautoload_queue;
extern Lisp_Object Vrun_hooks;
extern Lisp_Object Vsignaling_function;
extern Lisp_Object inhibit_lisp_code;
extern struct handler *handlerlist;
/* To run a normal hook, use the appropriate function from the list below.
The calling convention:
if (!NILP (Vrun_hooks))
call1 (Vrun_hooks, Qmy_funny_hook);
should no longer be used. */
extern void run_hook (Lisp_Object);
extern void run_hook_with_args_2 (Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object run_hook_with_args (ptrdiff_t nargs, Lisp_Object *args,
Lisp_Object (*funcall)
(ptrdiff_t nargs, Lisp_Object *args));
extern _Noreturn void xsignal (Lisp_Object, Lisp_Object);
extern _Noreturn void xsignal0 (Lisp_Object);
extern _Noreturn void xsignal1 (Lisp_Object, Lisp_Object);
extern _Noreturn void xsignal2 (Lisp_Object, Lisp_Object, Lisp_Object);
extern _Noreturn void xsignal3 (Lisp_Object, Lisp_Object, Lisp_Object,
Lisp_Object);
extern _Noreturn void signal_error (const char *, Lisp_Object);
extern Lisp_Object eval_sub (Lisp_Object form);
extern Lisp_Object apply1 (Lisp_Object, Lisp_Object);
extern Lisp_Object call0 (Lisp_Object);
extern Lisp_Object call1 (Lisp_Object, Lisp_Object);
extern Lisp_Object call2 (Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object call3 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object call4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object call5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object call6 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object call7 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object internal_catch (Lisp_Object, Lisp_Object (*) (Lisp_Object), Lisp_Object);
extern Lisp_Object internal_lisp_condition_case (Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object internal_condition_case (Lisp_Object (*) (void), Lisp_Object, Lisp_Object (*) (Lisp_Object));
extern Lisp_Object internal_condition_case_1 (Lisp_Object (*) (Lisp_Object), Lisp_Object, Lisp_Object, Lisp_Object (*) (Lisp_Object));
extern Lisp_Object internal_condition_case_2 (Lisp_Object (*) (Lisp_Object, Lisp_Object), Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object (*) (Lisp_Object));
extern Lisp_Object internal_condition_case_n
(Lisp_Object (*) (ptrdiff_t, Lisp_Object *), ptrdiff_t, Lisp_Object *,
Lisp_Object, Lisp_Object (*) (Lisp_Object, ptrdiff_t, Lisp_Object *));
extern void specbind (Lisp_Object, Lisp_Object);
extern void record_unwind_protect (void (*) (Lisp_Object), Lisp_Object);
extern void record_unwind_protect_ptr (void (*) (void *), void *);
extern void record_unwind_protect_int (void (*) (int), int);
extern void record_unwind_protect_void (void (*) (void));
extern void record_unwind_protect_nothing (void);
extern void clear_unwind_protect (ptrdiff_t);
extern void set_unwind_protect (ptrdiff_t, void (*) (Lisp_Object), Lisp_Object);
extern void set_unwind_protect_ptr (ptrdiff_t, void (*) (void *), void *);
extern Lisp_Object unbind_to (ptrdiff_t, Lisp_Object);
extern _Noreturn void error (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2);
extern _Noreturn void verror (const char *, va_list)
ATTRIBUTE_FORMAT_PRINTF (1, 0);
extern void un_autoload (Lisp_Object);
extern Lisp_Object call_debugger (Lisp_Object arg);
extern void init_eval_once (void);
extern Lisp_Object safe_call (ptrdiff_t, Lisp_Object, ...);
extern Lisp_Object safe_call1 (Lisp_Object, Lisp_Object);
extern Lisp_Object safe_call2 (Lisp_Object, Lisp_Object, Lisp_Object);
extern void init_eval (void);
extern void syms_of_eval (void);
extern void unwind_body (Lisp_Object);
extern ptrdiff_t record_in_backtrace (Lisp_Object, Lisp_Object *, ptrdiff_t);
extern void mark_specpdl (void);
extern void get_backtrace (Lisp_Object array);
Lisp_Object backtrace_top_function (void);
extern bool let_shadows_buffer_binding_p (struct Lisp_Symbol *symbol);
extern bool let_shadows_global_binding_p (Lisp_Object symbol);
/* Defined in editfns.c. */
extern void insert1 (Lisp_Object);
extern Lisp_Object save_excursion_save (void);
extern Lisp_Object save_restriction_save (void);
extern void save_excursion_restore (Lisp_Object);
extern void save_restriction_restore (Lisp_Object);
extern _Noreturn void time_overflow (void);
extern Lisp_Object make_buffer_string (ptrdiff_t, ptrdiff_t, bool);
extern Lisp_Object make_buffer_string_both (ptrdiff_t, ptrdiff_t, ptrdiff_t,
ptrdiff_t, bool);
extern void init_editfns (void);
extern void syms_of_editfns (void);
/* Defined in buffer.c. */
extern bool mouse_face_overlay_overlaps (Lisp_Object);
extern _Noreturn void nsberror (Lisp_Object);
extern void adjust_overlays_for_insert (ptrdiff_t, ptrdiff_t);
extern void adjust_overlays_for_delete (ptrdiff_t, ptrdiff_t);
extern void fix_start_end_in_overlays (ptrdiff_t, ptrdiff_t);
extern void report_overlay_modification (Lisp_Object, Lisp_Object, bool,
Lisp_Object, Lisp_Object, Lisp_Object);
extern bool overlay_touches_p (ptrdiff_t);
extern Lisp_Object other_buffer_safely (Lisp_Object);
extern Lisp_Object get_truename_buffer (Lisp_Object);
extern void init_buffer_once (void);
extern void init_buffer (int);
extern void syms_of_buffer (void);
extern void keys_of_buffer (void);
/* Defined in marker.c. */
extern ptrdiff_t marker_position (Lisp_Object);
extern ptrdiff_t marker_byte_position (Lisp_Object);
extern void clear_charpos_cache (struct buffer *);
extern ptrdiff_t buf_charpos_to_bytepos (struct buffer *, ptrdiff_t);
extern ptrdiff_t buf_bytepos_to_charpos (struct buffer *, ptrdiff_t);
extern void unchain_marker (struct Lisp_Marker *marker);
extern Lisp_Object set_marker_restricted (Lisp_Object, Lisp_Object, Lisp_Object);
extern Lisp_Object set_marker_both (Lisp_Object, Lisp_Object, ptrdiff_t, ptrdiff_t);
extern Lisp_Object set_marker_restricted_both (Lisp_Object, Lisp_Object,
ptrdiff_t, ptrdiff_t);
extern Lisp_Object build_marker (struct buffer *, ptrdiff_t, ptrdiff_t);
extern void syms_of_marker (void);
/* Defined in fileio.c. */
extern Lisp_Object expand_and_dir_to_file (Lisp_Object, Lisp_Object);
extern Lisp_Object write_region (Lisp_Object, Lisp_Object, Lisp_Object,
Lisp_Object, Lisp_Object, Lisp_Object,
Lisp_Object, int);
extern void close_file_unwind (int);
extern void fclose_unwind (void *);
extern void restore_point_unwind (Lisp_Object);
extern _Noreturn void report_file_errno (const char *, Lisp_Object, int);
extern _Noreturn void report_file_error (const char *, Lisp_Object);
extern bool internal_delete_file (Lisp_Object);
extern Lisp_Object emacs_readlinkat (int, const char *);
extern bool file_directory_p (const char *);
extern bool file_accessible_directory_p (Lisp_Object);
extern void init_fileio (void);
extern void syms_of_fileio (void);
extern Lisp_Object make_temp_name (Lisp_Object, bool);
/* Defined in search.c. */
extern void shrink_regexp_cache (void);
extern void restore_search_regs (void);
extern void record_unwind_save_match_data (void);
struct re_registers;
extern struct re_pattern_buffer *compile_pattern (Lisp_Object,
struct re_registers *,
Lisp_Object, bool, bool);
extern ptrdiff_t fast_string_match_internal (Lisp_Object, Lisp_Object,
Lisp_Object);
INLINE ptrdiff_t
fast_string_match (Lisp_Object regexp, Lisp_Object string)
{
return fast_string_match_internal (regexp, string, Qnil);
}
INLINE ptrdiff_t
fast_string_match_ignore_case (Lisp_Object regexp, Lisp_Object string)
{
return fast_string_match_internal (regexp, string, Vascii_canon_table);
}
extern ptrdiff_t fast_c_string_match_ignore_case (Lisp_Object, const char *,
ptrdiff_t);
extern ptrdiff_t fast_looking_at (Lisp_Object, ptrdiff_t, ptrdiff_t,
ptrdiff_t, ptrdiff_t, Lisp_Object);
extern ptrdiff_t find_newline (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t,
ptrdiff_t, ptrdiff_t *, ptrdiff_t *, bool);
extern ptrdiff_t scan_newline (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t,
ptrdiff_t, bool);
extern ptrdiff_t scan_newline_from_point (ptrdiff_t, ptrdiff_t *, ptrdiff_t *);
extern ptrdiff_t find_newline_no_quit (ptrdiff_t, ptrdiff_t,
ptrdiff_t, ptrdiff_t *);
extern ptrdiff_t find_before_next_newline (ptrdiff_t, ptrdiff_t,
ptrdiff_t, ptrdiff_t *);
extern void syms_of_search (void);
extern void clear_regexp_cache (void);
/* Defined in minibuf.c. */
extern Lisp_Object Vminibuffer_list;
extern Lisp_Object last_minibuf_string;
extern Lisp_Object get_minibuffer (EMACS_INT);
extern void init_minibuf_once (void);
extern void syms_of_minibuf (void);
/* Defined in callint.c. */
extern void syms_of_callint (void);
/* Defined in casefiddle.c. */
extern void syms_of_casefiddle (void);
extern void keys_of_casefiddle (void);
/* Defined in casetab.c. */
extern void init_casetab_once (void);
extern void syms_of_casetab (void);
/* Defined in keyboard.c. */
extern Lisp_Object echo_message_buffer;
extern struct kboard *echo_kboard;
extern void cancel_echoing (void);
extern Lisp_Object last_undo_boundary;
extern bool input_pending;
#ifdef HAVE_STACK_OVERFLOW_HANDLING
extern sigjmp_buf return_to_command_loop;
#endif
extern Lisp_Object menu_bar_items (Lisp_Object);
extern Lisp_Object tool_bar_items (Lisp_Object, int *);
extern void discard_mouse_events (void);
#ifdef USABLE_SIGIO
void handle_input_available_signal (int);
#endif
extern Lisp_Object pending_funcalls;
extern bool detect_input_pending (void);
extern bool detect_input_pending_ignore_squeezables (void);
extern bool detect_input_pending_run_timers (bool);
extern void safe_run_hooks (Lisp_Object);
extern void cmd_error_internal (Lisp_Object, const char *);
extern Lisp_Object command_loop_1 (void);
extern Lisp_Object read_menu_command (void);
extern Lisp_Object recursive_edit_1 (void);
extern void record_auto_save (void);
extern void force_auto_save_soon (void);
extern void init_keyboard (void);
extern void syms_of_keyboard (void);
extern void keys_of_keyboard (void);
/* Defined in indent.c. */
extern ptrdiff_t current_column (void);
extern void invalidate_current_column (void);
extern bool indented_beyond_p (ptrdiff_t, ptrdiff_t, EMACS_INT);
extern void syms_of_indent (void);
/* Defined in frame.c. */
extern void store_frame_param (struct frame *, Lisp_Object, Lisp_Object);
extern void store_in_alist (Lisp_Object *, Lisp_Object, Lisp_Object);
extern Lisp_Object do_switch_frame (Lisp_Object, int, int, Lisp_Object);
extern Lisp_Object get_frame_param (struct frame *, Lisp_Object);
extern void frames_discard_buffer (Lisp_Object);
extern void syms_of_frame (void);
/* Defined in emacs.c. */
extern char **initial_argv;
extern int initial_argc;
#if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
extern bool display_arg;
#endif
extern Lisp_Object decode_env_path (const char *, const char *, bool);
extern Lisp_Object empty_unibyte_string, empty_multibyte_string;
extern _Noreturn void terminate_due_to_signal (int, int);
#ifdef WINDOWSNT
extern Lisp_Object Vlibrary_cache;
#endif
#if HAVE_SETLOCALE
void fixup_locale (void);
void synchronize_system_messages_locale (void);
void synchronize_system_time_locale (void);
#else
INLINE void fixup_locale (void) {}
INLINE void synchronize_system_messages_locale (void) {}
INLINE void synchronize_system_time_locale (void) {}
#endif
extern void shut_down_emacs (int, Lisp_Object);
/* True means don't do interactive redisplay and don't change tty modes. */
extern bool noninteractive;
/* True means remove site-lisp directories from load-path. */
extern bool no_site_lisp;
/* Pipe used to send exit notification to the daemon parent at
startup. On Windows, we use a kernel event instead. */
#ifndef WINDOWSNT
extern int daemon_pipe[2];
#define IS_DAEMON (daemon_pipe[1] != 0)
#define DAEMON_RUNNING (daemon_pipe[1] >= 0)
#else /* WINDOWSNT */
extern void *w32_daemon_event;
#define IS_DAEMON (w32_daemon_event != NULL)
#define DAEMON_RUNNING (w32_daemon_event != INVALID_HANDLE_VALUE)
#endif
/* True if handling a fatal error already. */
extern bool fatal_error_in_progress;
/* True means don't do use window-system-specific display code. */
extern bool inhibit_window_system;
/* True means that a filter or a sentinel is running. */
extern bool running_asynch_code;
/* Defined in process.c. */
extern void kill_buffer_processes (Lisp_Object);
extern int wait_reading_process_output (intmax_t, int, int, bool, Lisp_Object,
struct Lisp_Process *, int);
/* Max value for the first argument of wait_reading_process_output. */
#if __GNUC__ == 3 || (__GNUC__ == 4 && __GNUC_MINOR__ <= 5)
/* Work around a bug in GCC 3.4.2, known to be fixed in GCC 4.6.3.
The bug merely causes a bogus warning, but the warning is annoying. */
# define WAIT_READING_MAX min (TYPE_MAXIMUM (time_t), INTMAX_MAX)
#else
# define WAIT_READING_MAX INTMAX_MAX
#endif
#ifdef HAVE_TIMERFD
extern void add_timer_wait_descriptor (int);
#endif
extern void add_keyboard_wait_descriptor (int);
extern void delete_keyboard_wait_descriptor (int);
#ifdef HAVE_GPM
extern void add_gpm_wait_descriptor (int);
extern void delete_gpm_wait_descriptor (int);
#endif
extern void init_process_emacs (void);
extern void syms_of_process (void);
extern void setup_process_coding_systems (Lisp_Object);
/* Defined in callproc.c. */
#ifndef DOS_NT
_Noreturn
#endif
extern int child_setup (int, int, int, char **, bool, Lisp_Object);
extern void init_callproc_1 (void);
extern void init_callproc (void);
extern void set_initial_environment (void);
extern void syms_of_callproc (void);
/* Defined in doc.c. */
extern Lisp_Object read_doc_string (Lisp_Object);
extern Lisp_Object get_doc_string (Lisp_Object, bool, bool);
extern void syms_of_doc (void);
extern int read_bytecode_char (bool);
/* Defined in bytecode.c. */
extern void syms_of_bytecode (void);
extern struct byte_stack *byte_stack_list;
#if BYTE_MARK_STACK
extern void mark_byte_stack (void);
#endif
extern void unmark_byte_stack (void);
extern Lisp_Object exec_byte_code (Lisp_Object, Lisp_Object, Lisp_Object,
Lisp_Object, ptrdiff_t, Lisp_Object *);
/* Defined in macros.c. */
extern void init_macros (void);
extern void syms_of_macros (void);
/* Defined in undo.c. */
extern void truncate_undo_list (struct buffer *);
extern void record_insert (ptrdiff_t, ptrdiff_t);
extern void record_delete (ptrdiff_t, Lisp_Object, bool);
extern void record_first_change (void);
extern void record_change (ptrdiff_t, ptrdiff_t);
extern void record_property_change (ptrdiff_t, ptrdiff_t,
Lisp_Object, Lisp_Object,
Lisp_Object);
extern void syms_of_undo (void);
/* Defined in textprop.c. */
extern void report_interval_modification (Lisp_Object, Lisp_Object);
/* Defined in menu.c. */
extern void syms_of_menu (void);
/* Defined in xmenu.c. */
extern void syms_of_xmenu (void);
/* Defined in termchar.h. */
struct tty_display_info;
/* Defined in termhooks.h. */
struct terminal;
/* Defined in sysdep.c. */
#ifndef HAVE_GET_CURRENT_DIR_NAME
extern char *get_current_dir_name (void);
#endif
extern void stuff_char (char c);
extern void init_foreground_group (void);
extern void sys_subshell (void);
extern void sys_suspend (void);
extern void discard_tty_input (void);
extern void init_sys_modes (struct tty_display_info *);
extern void reset_sys_modes (struct tty_display_info *);
extern void init_all_sys_modes (void);
extern void reset_all_sys_modes (void);
extern void child_setup_tty (int);
extern void setup_pty (int);
extern int set_window_size (int, int, int);
extern EMACS_INT get_random (void);
extern void seed_random (void *, ptrdiff_t);
extern void init_random (void);
extern void emacs_backtrace (int);
extern _Noreturn void emacs_abort (void) NO_INLINE;
extern int emacs_open (const char *, int, int);
extern int emacs_pipe (int[2]);
extern int emacs_close (int);
extern ptrdiff_t emacs_read (int, void *, ptrdiff_t);
extern ptrdiff_t emacs_write (int, void const *, ptrdiff_t);
extern ptrdiff_t emacs_write_sig (int, void const *, ptrdiff_t);
extern void emacs_perror (char const *);
extern void unlock_all_files (void);
extern void lock_file (Lisp_Object);
extern void unlock_file (Lisp_Object);
extern void unlock_buffer (struct buffer *);
extern void syms_of_filelock (void);
extern int str_collate (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
/* Defined in sound.c. */
extern void syms_of_sound (void);
/* Defined in category.c. */
extern void init_category_once (void);
extern Lisp_Object char_category_set (int);
extern void syms_of_category (void);
/* Defined in ccl.c. */
extern void syms_of_ccl (void);
/* Defined in dired.c. */
extern void syms_of_dired (void);
extern Lisp_Object directory_files_internal (Lisp_Object, Lisp_Object,
Lisp_Object, Lisp_Object,
bool, Lisp_Object);
/* Defined in term.c. */
extern int *char_ins_del_vector;
extern void syms_of_term (void);
extern _Noreturn void fatal (const char *msgid, ...)
ATTRIBUTE_FORMAT_PRINTF (1, 2);
/* Defined in terminal.c. */
extern void syms_of_terminal (void);
/* Defined in font.c. */
extern void syms_of_font (void);
extern void init_font (void);
#ifdef HAVE_WINDOW_SYSTEM
/* Defined in fontset.c. */
extern void syms_of_fontset (void);
#endif
/* Defined in gfilenotify.c */
#ifdef HAVE_GFILENOTIFY
extern void globals_of_gfilenotify (void);
extern void syms_of_gfilenotify (void);
#endif
/* Defined in inotify.c */
#ifdef HAVE_INOTIFY
extern void syms_of_inotify (void);
#endif
#ifdef HAVE_W32NOTIFY
/* Defined on w32notify.c. */
extern void syms_of_w32notify (void);
#endif
/* Defined in xfaces.c. */
extern Lisp_Object Vface_alternative_font_family_alist;
extern Lisp_Object Vface_alternative_font_registry_alist;
extern void syms_of_xfaces (void);
#ifdef HAVE_X_WINDOWS
/* Defined in xfns.c. */
extern void syms_of_xfns (void);
/* Defined in xsmfns.c. */
extern void syms_of_xsmfns (void);
/* Defined in xselect.c. */
extern void syms_of_xselect (void);
/* Defined in xterm.c. */
extern void init_xterm (void);
extern void syms_of_xterm (void);
#endif /* HAVE_X_WINDOWS */
#ifdef HAVE_WINDOW_SYSTEM
/* Defined in xterm.c, nsterm.m, w32term.c. */
extern char *x_get_keysym_name (int);
#endif /* HAVE_WINDOW_SYSTEM */
#ifdef HAVE_LIBXML2
/* Defined in xml.c. */
extern void syms_of_xml (void);
extern void xml_cleanup_parser (void);
#endif
#ifdef HAVE_ZLIB
/* Defined in decompress.c. */
extern void syms_of_decompress (void);
#endif
#ifdef HAVE_DBUS
/* Defined in dbusbind.c. */
void init_dbusbind (void);
void syms_of_dbusbind (void);
#endif
/* Defined in profiler.c. */
extern bool profiler_memory_running;
extern void malloc_probe (size_t);
extern void syms_of_profiler (void);
#ifdef DOS_NT
/* Defined in msdos.c, w32.c. */
extern char *emacs_root_dir (void);
#endif /* DOS_NT */
/* Defined in lastfile.c. */
extern char my_edata[];
extern char my_endbss[];
extern char *my_endbss_static;
/* True means ^G can quit instantly. */
extern bool immediate_quit;
extern void *xmalloc (size_t) ATTRIBUTE_MALLOC_SIZE ((1));
extern void *xzalloc (size_t) ATTRIBUTE_MALLOC_SIZE ((1));
extern void *xrealloc (void *, size_t) ATTRIBUTE_ALLOC_SIZE ((2));
extern void xfree (void *);
extern void *xnmalloc (ptrdiff_t, ptrdiff_t) ATTRIBUTE_MALLOC_SIZE ((1,2));
extern void *xnrealloc (void *, ptrdiff_t, ptrdiff_t)
ATTRIBUTE_ALLOC_SIZE ((2,3));
extern void *xpalloc (void *, ptrdiff_t *, ptrdiff_t, ptrdiff_t, ptrdiff_t);
extern char *xstrdup (const char *) ATTRIBUTE_MALLOC;
extern char *xlispstrdup (Lisp_Object) ATTRIBUTE_MALLOC;
extern void dupstring (char **, char const *);
/* Make DEST a copy of STRING's data. Return a pointer to DEST's terminating
null byte. This is like stpcpy, except the source is a Lisp string. */
INLINE char *
lispstpcpy (char *dest, Lisp_Object string)
{
ptrdiff_t len = SBYTES (string);
memcpy (dest, SDATA (string), len + 1);
return dest + len;
}
extern void xputenv (const char *);
extern char *egetenv_internal (const char *, ptrdiff_t);
INLINE char *
egetenv (const char *var)
{
/* When VAR is a string literal, strlen can be optimized away. */
return egetenv_internal (var, strlen (var));
}
/* Set up the name of the machine we're running on. */
extern void init_system_name (void);
/* Return the absolute value of X. X should be a signed integer
expression without side effects, and X's absolute value should not
exceed the maximum for its promoted type. This is called 'eabs'
because 'abs' is reserved by the C standard. */
#define eabs(x) ((x) < 0 ? -(x) : (x))
/* Return a fixnum or float, depending on whether VAL fits in a Lisp
fixnum. */
#define make_fixnum_or_float(val) \
(FIXNUM_OVERFLOW_P (val) ? make_float (val) : make_number (val))
/* SAFE_ALLOCA normally allocates memory on the stack, but if size is
larger than MAX_ALLOCA, use xmalloc to avoid overflowing the stack. */
enum MAX_ALLOCA { MAX_ALLOCA = 16 * 1024 };
extern void *record_xmalloc (size_t) ATTRIBUTE_ALLOC_SIZE ((1));
#define USE_SAFE_ALLOCA \
ptrdiff_t sa_avail = MAX_ALLOCA; \
ptrdiff_t sa_count = SPECPDL_INDEX (); bool sa_must_free = false
#define AVAIL_ALLOCA(size) (sa_avail -= (size), alloca (size))
/* SAFE_ALLOCA allocates a simple buffer. */
#define SAFE_ALLOCA(size) ((size) <= sa_avail \
? AVAIL_ALLOCA (size) \
: (sa_must_free = true, record_xmalloc (size)))
/* SAFE_NALLOCA sets BUF to a newly allocated array of MULTIPLIER *
NITEMS items, each of the same type as *BUF. MULTIPLIER must
positive. The code is tuned for MULTIPLIER being a constant. */
#define SAFE_NALLOCA(buf, multiplier, nitems) \
do { \
if ((nitems) <= sa_avail / sizeof *(buf) / (multiplier)) \
(buf) = AVAIL_ALLOCA (sizeof *(buf) * (multiplier) * (nitems)); \
else \
{ \
(buf) = xnmalloc (nitems, sizeof *(buf) * (multiplier)); \
sa_must_free = true; \
record_unwind_protect_ptr (xfree, buf); \
} \
} while (false)
/* SAFE_ALLOCA_STRING allocates a C copy of a Lisp string. */
#define SAFE_ALLOCA_STRING(ptr, string) \
do { \
(ptr) = SAFE_ALLOCA (SBYTES (string) + 1); \
memcpy (ptr, SDATA (string), SBYTES (string) + 1); \
} while (false)
/* SAFE_FREE frees xmalloced memory and enables GC as needed. */
#define SAFE_FREE() \
do { \
if (sa_must_free) { \
sa_must_free = false; \
unbind_to (sa_count, Qnil); \
} \
} while (false)
/* Return floor (NBYTES / WORD_SIZE). */
INLINE ptrdiff_t
lisp_word_count (ptrdiff_t nbytes)
{
if (-1 >> 1 == -1)
switch (word_size)
{
case 2: return nbytes >> 1;
case 4: return nbytes >> 2;
case 8: return nbytes >> 3;
case 16: return nbytes >> 4;
}
return nbytes / word_size - (nbytes % word_size < 0);
}
/* SAFE_ALLOCA_LISP allocates an array of Lisp_Objects. */
#define SAFE_ALLOCA_LISP(buf, nelt) \
do { \
if ((nelt) <= lisp_word_count (sa_avail)) \
(buf) = AVAIL_ALLOCA ((nelt) * word_size); \
else if ((nelt) <= min (PTRDIFF_MAX, SIZE_MAX) / word_size) \
{ \
Lisp_Object arg_; \
(buf) = xmalloc ((nelt) * word_size); \
arg_ = make_save_memory (buf, nelt); \
sa_must_free = true; \
record_unwind_protect (free_save_value, arg_); \
} \
else \
memory_full (SIZE_MAX); \
} while (false)
/* If USE_STACK_LISP_OBJECTS, define macros that and functions that allocate
block-scoped conses and strings. These objects are not
managed by the garbage collector, so they are dangerous: passing them
out of their scope (e.g., to user code) results in undefined behavior.
Conversely, they have better performance because GC is not involved.
This feature is experimental and requires careful debugging.
Build with CPPFLAGS='-DUSE_STACK_LISP_OBJECTS=0' to disable it. */
#ifndef USE_STACK_LISP_OBJECTS
# define USE_STACK_LISP_OBJECTS true
#endif
/* USE_STACK_LISP_OBJECTS requires GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS. */
#if GC_MARK_STACK != GC_MAKE_GCPROS_NOOPS
# undef USE_STACK_LISP_OBJECTS
# define USE_STACK_LISP_OBJECTS false
#endif
#ifdef GC_CHECK_STRING_BYTES
enum { defined_GC_CHECK_STRING_BYTES = true };
#else
enum { defined_GC_CHECK_STRING_BYTES = false };
#endif
/* Struct inside unions that are typically no larger and aligned enough. */
union Aligned_Cons
{
struct Lisp_Cons s;
double d; intmax_t i; void *p;
};
union Aligned_String
{
struct Lisp_String s;
double d; intmax_t i; void *p;
};
/* True for stack-based cons and string implementations, respectively.
Use stack-based strings only if stack-based cons also works.
Otherwise, STACK_CONS would create heap-based cons cells that
could point to stack-based strings, which is a no-no. */
enum
{
USE_STACK_CONS = (USE_STACK_LISP_OBJECTS
&& alignof (union Aligned_Cons) % GCALIGNMENT == 0),
USE_STACK_STRING = (USE_STACK_CONS
&& !defined_GC_CHECK_STRING_BYTES
&& alignof (union Aligned_String) % GCALIGNMENT == 0)
};
/* Auxiliary macros used for auto allocation of Lisp objects. Please
use these only in macros like AUTO_CONS that declare a local
variable whose lifetime will be clear to the programmer. */
#define STACK_CONS(a, b) \
make_lisp_ptr (&(union Aligned_Cons) { { a, { b } } }.s, Lisp_Cons)
#define AUTO_CONS_EXPR(a, b) \
(USE_STACK_CONS ? STACK_CONS (a, b) : Fcons (a, b))
/* Declare NAME as an auto Lisp cons or short list if possible, a
GC-based one otherwise. This is in the sense of the C keyword
'auto'; i.e., the object has the lifetime of the containing block.
The resulting object should not be made visible to user Lisp code. */
#define AUTO_CONS(name, a, b) Lisp_Object name = AUTO_CONS_EXPR (a, b)
#define AUTO_LIST1(name, a) \
Lisp_Object name = (USE_STACK_CONS ? STACK_CONS (a, Qnil) : list1 (a))
#define AUTO_LIST2(name, a, b) \
Lisp_Object name = (USE_STACK_CONS \
? STACK_CONS (a, STACK_CONS (b, Qnil)) \
: list2 (a, b))
#define AUTO_LIST3(name, a, b, c) \
Lisp_Object name = (USE_STACK_CONS \
? STACK_CONS (a, STACK_CONS (b, STACK_CONS (c, Qnil))) \
: list3 (a, b, c))
#define AUTO_LIST4(name, a, b, c, d) \
Lisp_Object name \
= (USE_STACK_CONS \
? STACK_CONS (a, STACK_CONS (b, STACK_CONS (c, \
STACK_CONS (d, Qnil)))) \
: list4 (a, b, c, d))
/* Check whether stack-allocated strings are ASCII-only. */
#if defined (ENABLE_CHECKING) && USE_STACK_LISP_OBJECTS
extern const char *verify_ascii (const char *);
#else
# define verify_ascii(str) (str)
#endif
/* Declare NAME as an auto Lisp string if possible, a GC-based one if not.
Take its value from STR. STR is not necessarily copied and should
contain only ASCII characters. The resulting Lisp string should
not be modified or made visible to user code. */
#define AUTO_STRING(name, str) \
Lisp_Object name = \
(USE_STACK_STRING \
? (make_lisp_ptr \
((&(union Aligned_String) \
{{strlen (str), -1, 0, (unsigned char *) verify_ascii (str)}}.s), \
Lisp_String)) \
: build_string (verify_ascii (str)))
/* Loop over all tails of a list, checking for cycles.
FIXME: Make tortoise and n internal declarations.
FIXME: Unroll the loop body so we don't need `n'. */
#define FOR_EACH_TAIL(hare, list, tortoise, n) \
for ((tortoise) = (hare) = (list), (n) = true; \
CONSP (hare); \
(hare = XCDR (hare), (n) = !(n), \
((n) \
? (EQ (hare, tortoise) \
? xsignal1 (Qcircular_list, list) \
: (void) 0) \
/* Move tortoise before the next iteration, in case */ \
/* the next iteration does an Fsetcdr. */ \
: (void) ((tortoise) = XCDR (tortoise)))))
/* Do a `for' loop over alist values. */
#define FOR_EACH_ALIST_VALUE(head_var, list_var, value_var) \
for ((list_var) = (head_var); \
(CONSP (list_var) && ((value_var) = XCDR (XCAR (list_var)), true)); \
(list_var) = XCDR (list_var))
/* Check whether it's time for GC, and run it if so. */
INLINE void
maybe_gc (void)
{
if ((consing_since_gc > gc_cons_threshold
&& consing_since_gc > gc_relative_threshold)
|| (!NILP (Vmemory_full)
&& consing_since_gc > memory_full_cons_threshold))
Fgarbage_collect ();
}
INLINE bool
functionp (Lisp_Object object)
{
if (SYMBOLP (object) && !NILP (Ffboundp (object)))
{
object = Findirect_function (object, Qt);
if (CONSP (object) && EQ (XCAR (object), Qautoload))
{
/* Autoloaded symbols are functions, except if they load
macros or keymaps. */
int i;
for (i = 0; i < 4 && CONSP (object); i++)
object = XCDR (object);
return ! (CONSP (object) && !NILP (XCAR (object)));
}
}
if (SUBRP (object))
return XSUBR (object)->max_args != UNEVALLED;
else if (COMPILEDP (object))
return true;
else if (CONSP (object))
{
Lisp_Object car = XCAR (object);
return EQ (car, Qlambda) || EQ (car, Qclosure);
}
else
return false;
}
INLINE_HEADER_END
#endif /* EMACS_LISP_H */
|