aboutsummaryrefslogtreecommitdiff
path: root/desiredata/src/kernel.c
blob: 27e9636f5af6085472709563eed02566b0f35089 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
/* $Id: kernel.c,v 1.1.2.92 2007/09/09 21:34:56 matju Exp $
 * Copyright 2006-2007 Mathieu Bouchard.
 * Copyright (c) 1997-2006 Miller Puckette.
 * For information on usage and redistribution, and for a DISCLAIMER OF ALL
 * WARRANTIES, see the file, "LICENSE.txt," in this distribution. */

/* IOhannes :
 * changed the canvas_restore in "g_canvas.c", so that it might accept $args as well (like "pd $0_test")
 * so you can make multiple & distinguishable templates
 * 1511:forum::für::umläute:2001
 * change marked with IOhannes
 */

#define PD_PLUSPLUS_FACE
#include "desire.h"
using namespace desire;
#include "m_simd.h"
#include "config.h"
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <sstream>
#include <vector>
#include <algorithm>
#include <fcntl.h>
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#include <pthread.h>
#ifdef UNISTD
#include <unistd.h>
#endif
#ifdef MSW
#include <io.h>
#endif

#define a_float    a_w.w_float
#define a_symbol   a_w.w_symbol
#define a_gpointer a_w.w_gpointer
#define a_index    a_w.w_index

using namespace std;

/* T.Grill - bit alignment for signal vectors (must be a multiple of 8!) */
/* if undefined no alignment occurs */
#ifdef SIMD_BYTEALIGN
    #define VECTORALIGNMENT (SIMD_BYTEALIGN*8)
#else
    #define VECTORALIGNMENT 128
#endif

void *getbytes(size_t nbytes) {
    if (nbytes < 1) nbytes = 1;
    void *ret = (void *)calloc(nbytes, 1);
    if (!ret) error("pd: getbytes() failed -- out of memory");
    return ret;
}

void *copybytes(void *src, size_t nbytes) {
    void *ret = getbytes(nbytes);
    if (nbytes) memcpy(ret, src, nbytes);
    return ret;
}

void *resizebytes(void *old, size_t oldsize, size_t newsize) {
    if (newsize < 1) newsize = 1;
    if (oldsize < 1) oldsize = 1;
    void *ret = (void *)realloc((char *)old, newsize);
    if (newsize > oldsize && ret) memset(((char *)ret) + oldsize, 0, newsize - oldsize);
    if (!ret) error("pd: resizebytes() failed -- out of memory");
    return ret;
}

void freebytes(void *old, size_t nbytes) {free(old);}

/* in the following size_t is assumed to have the same size as a pointer type !!! */

/* T.Grill - get aligned memory */
void *getalignedbytes(size_t nbytes) {
    /* to align the region we also need some extra memory to save the original pointer location
       it is saved immediately before the aligned vector memory */
    void *vec = getbytes(nbytes+(VECTORALIGNMENT/8-1)+sizeof(void *));
    if (!vec) return 0;
    t_int alignment = ((t_int)vec+sizeof(void *))&(VECTORALIGNMENT/8-1);
    void *ret = (unsigned char *)vec+sizeof(void *)+(alignment == 0?0:VECTORALIGNMENT/8-alignment);
    *(void **)((unsigned char *)ret-sizeof(void *)) = vec;
    return ret;
}

/* T.Grill - free aligned vector memory */
void freealignedbytes(void *ptr,size_t nbytes) {
	free(*(void **)((unsigned char *)ptr-sizeof(void *)));
}

/* T.Grill - resize aligned vector memory */
void *resizealignedbytes(void *ptr,size_t oldsize, size_t newsize) {
	if (newsize<1) newsize=1;
	void *ori = *(void **)((unsigned char *)ptr-sizeof(void *));
	void *vec = realloc(ori,newsize+(VECTORALIGNMENT/8-1)+sizeof(void *));
	t_int alignment = ((t_int)vec+sizeof(void *))&(VECTORALIGNMENT/8-1);
	void *ret = (unsigned char *)vec+sizeof(void *)+(alignment == 0?0:VECTORALIGNMENT/8-alignment);
	*(void **)((unsigned char *)ret-sizeof(void *)) = vec;
	return ret;
}

/* TB: copy to aligned vector memory */
void *copyalignedbytes(void *src, size_t nbytes) {
    void *ret = getalignedbytes(nbytes);
    if (nbytes) memcpy(ret, src, nbytes);
    return ret;
}

t_class *hash_class;

/*extern "C"*/ void hash_setup () {
  hash_class = class_new(gensym("#V"), (t_newmethod)0 /*hash_new*/,
	0 /*(t_method)hash_free*/, sizeof(t_object), CLASS_PD, A_GIMME, 0);
}

/* convenience routines for checking and getting values of atoms.
   There's no "pointer" version since there's nothing safe to return if there's an error. */

t_float     atom_getfloat( t_atom *a) {return a->a_type==A_FLOAT ? a->a_float : 0;}
t_int       atom_getint(   t_atom *a) {return (t_int)atom_getfloat(a);}
t_symbol *  atom_getsymbol(t_atom *a) {return a->a_type==A_SYMBOL ? a->a_symbol : &s_symbol;}
const char *atom_getstring(t_atom *a) {return atom_getsymbol(a)->name;}

t_symbol *atom_gensym(t_atom *a) { /* this works better for graph labels */
    if (a->a_type == A_SYMBOL) return a->a_symbol;
    if (a->a_type == A_FLOAT) {char buf[30]; sprintf(buf, "%g", a->a_float); return gensym(buf);}
    return gensym("???");
}

t_float     atom_getfloatarg( int which, int argc, t_atom *argv) {return argc<=which ? 0   : atom_getfloat( argv+which);}
t_symbol *  atom_getsymbolarg(int which, int argc, t_atom *argv) {return argc<=which ? &s_ : atom_getsymbol(argv+which);}
t_int       atom_getintarg(   int which, int argc, t_atom *argv) {return t_int(atom_getfloatarg(which,argc,argv));}
const char *atom_getstringarg(int which, int argc, t_atom *argv) {return      atom_getsymbolarg(which,argc,argv)->name;}

/* convert an atom into a string, in the reverse sense of binbuf_text (q.v.)
   special attention is paid to symbols containing the special characters
   ';', ',', '$', and '\'; these are quoted with a preceding '\', except that
   the '$' only gets quoted at the beginning of the string. */

//static int should_quote(char *s) {return strchr(";,\\{}\"",*s) || isspace(*s) || (*s=='$' && isdigit(s[1]));}
static int should_quote(char *s) {return strchr(";,\\{}\" ",*s) || (*s=='$' && isdigit(s[1]));}

void atom_ostream(t_atom *a, ostream &buf) {
    switch(a->a_type) {
    case A_SEMI:    buf << ";"; break;
    case A_COMMA:   buf << ","; break;
    case A_POINTER: buf << "(pointer)"; break;
    case A_FLOAT:   buf << a->a_float; break;
    case A_SYMBOL: {
        bool quote=0;
        for (char *sp = a->a_symbol->name; *sp; sp++) if (should_quote(sp)) {quote = 1; break;}
        if (quote) {
            for (char *sp = a->a_symbol->name; *sp; sp++) {
                if (should_quote(sp)) buf << '\\';
                buf << *sp;
            }
        } else buf << a->a_symbol->name;
    } break;
    case A_DOLLAR:  buf << "$" << a->a_index; break;
    case A_DOLLSYM: buf << a->a_symbol->name; break;
    default: bug("%s",__PRETTY_FUNCTION__);
    }
}

/* this is not completely compatible with Miller's, as it won't do anything special for short bufsizes. */
void atom_string(t_atom *a, char *buf, unsigned int bufsize) {
     ostringstream b;
     atom_ostream(a,b);
     strncpy(buf,b.str().data(),bufsize);
     buf[bufsize-1]=0;
}

void atom_init(t_atom *a, size_t n) {
	for (size_t i=0; i<n; i++) {
		a[i].a_type = A_FLOAT;
		a[i].a_float = 0.0;
	}
}

void atom_copy(t_atom *a, t_atom *b, size_t n) {
	memcpy(a,b,n*sizeof(t_atom));
	/* here I should handle incref */
}

void atom_delete(t_atom *a, size_t n) {
	/* here I should handle decref */
}

/* in which the value has bit 0 set if the key object is not a zombie,
   and has bit 1 set if the object has been uploaded to the client */
t_hash<t_pd *,long> *object_table;

t_pd *pd_new(t_class *c) {
    if (!c) bug("pd_new: apparently called before setup routine");
    t_pd *x = (t_pd *)getbytes(c->size);
    x->_class = c;
    object_table->set(x,1);
    if (c->gobj) ((t_gobj *)x)->g_adix = appendix_new((t_gobj *)x);
    if (c->patchable) {
        ((t_object *)x)->inlet = 0;
        ((t_object *)x)->outlet = 0;
    }
    return x;
}

void pd_free_zombie(t_pd *x) {
	t_class *c = x->_class;
	if (c->gobj) appendix_free((t_gobj *)x);
	if (c->size) free(x);
	object_table->del(x);
}

void pd_free(t_pd *x) {
    t_class *c = x->_class;
    if (c->freemethod) ((t_gotfn)(c->freemethod))(x);
    if (c->patchable) {
	t_object *y = (t_object *)x;
	while (y->outlet) outlet_free(y->outlet);
	while (y-> inlet)  inlet_free(y-> inlet);
	if (y->binbuf)    binbuf_free(y->binbuf);
    }
    /* schedule for deletion if need to keep the allocation around */
    if (c->gobj && (object_table->get(x)&2)) {
	object_table->set(x,object_table->get(x)&~1);
	gobj_changed((t_gobj *)x,"");
	//char *xx = (char *)x; for (int i=0; i<c->size; i++) xx[i]="\xde\xad\xbe\xef"[i&3];
    } else pd_free_zombie(x);
}

void gobj_save(t_gobj *x, t_binbuf *b) {
    t_class *c = x->g_pd;
    if (c->savefn) c->savefn(x, b);
}

/* deal with several objects bound to the same symbol.  If more than one,
   we actually bind a collection object to the symbol, which forwards messages sent to the symbol. */

static t_class *bindlist_class;

struct t_bindelem {
    t_pd *who;
    t_bindelem *next;
};

struct t_bindlist : t_pd {
    t_bindelem *list;
};

#define bind_each(e,x) for (t_bindelem *e = x->list; e; e = e->next)
static void bindlist_bang    (t_bindlist *x)              {bind_each(e,x)   pd_bang(e->who);}
static void bindlist_float   (t_bindlist *x, t_float f)   {bind_each(e,x)  pd_float(e->who,f);}
static void bindlist_symbol  (t_bindlist *x, t_symbol *s) {bind_each(e,x) pd_symbol(e->who,s);}
static void bindlist_pointer (t_bindlist *x, t_gpointer *gp)                      {bind_each(e,x)   pd_pointer(e->who, gp);}
static void bindlist_list    (t_bindlist *x, t_symbol *s, int argc, t_atom *argv) {bind_each(e,x)      pd_list(e->who, s,argc,argv);}
static void bindlist_anything(t_bindlist *x, t_symbol *s, int argc, t_atom *argv) {bind_each(e,x) pd_typedmess(e->who, s,argc,argv);}

static t_bindelem *bindelem_new(t_pd *who, t_bindelem *next) {
	t_bindelem *self = (t_bindelem *)malloc(sizeof(t_bindelem));
	self->who = who;
	self->next = next;
	return self;
}

void pd_bind(t_pd *x, t_symbol *s) {
    if (s->thing) {
        if (s->thing->_class == bindlist_class) {
            t_bindlist *b = (t_bindlist *)s->thing;
            b->list = bindelem_new(x,b->list);
        } else {
            t_bindlist *b = (t_bindlist *)pd_new(bindlist_class);
            b->list = bindelem_new(x,bindelem_new(s->thing,0));
            s->thing = b;
        }
    } else s->thing = x;
}

/* bindlists always have at least two elements... if the number
   goes down to one, get rid of the bindlist and bind the symbol
   straight to the remaining element. */
void pd_unbind(t_pd *x, t_symbol *s) {
    if (s->thing == x) {s->thing = 0; return;}
    if (s->thing && s->thing->_class == bindlist_class) {
        t_bindlist *b = (t_bindlist *)s->thing;
        t_bindelem *e, *e2;
        if ((e = b->list)->who == x) {
            b->list = e->next;
            free(e);
        } else for (e = b->list; (e2=e->next); e = e2) if (e2->who == x) {
            e->next = e2->next;
            free(e2);
            break;
        }
        if (!b->list->next) {
            s->thing = b->list->who;
            free(b->list);
            pd_free(b);
        }
    } else error("%s: couldn't unbind", s->name);
}

t_pd *pd_findbyclass(t_symbol *s, t_class *c) {
    t_pd *x = 0;
    if (!s->thing) return 0;
    if (s->thing->_class == c) return s->thing;
    if (s->thing->_class == bindlist_class) {
        t_bindlist *b = (t_bindlist *)s->thing;
        int warned = 0;
        bind_each(e,b) if (e->who->_class == c) {
            if (x && !warned) {post("warning: %s: multiply defined", s->name); warned = 1;}
            x = e->who;
        }
    }
    return x;
}

/* stack for maintaining bindings for the #X symbol during nestable loads. */

#undef g_next

struct t_gstack {
    t_pd *what;
    t_symbol *loading_abstr;
    t_gstack *next;
    long base_o_index;
};

static t_gstack *gstack_head = 0;
static t_pd *lastpopped;
static t_symbol *pd_loading_abstr;

int pd_setloadingabstraction(t_symbol *sym) {
    t_gstack *foo = gstack_head;
    for (foo = gstack_head; foo; foo = foo->next) if (foo->loading_abstr == sym) return 1;
    pd_loading_abstr = sym;
    return 0;
}
 
int gstack_empty() {return !gstack_head;}

long canvas_base_o_index() {
    return gstack_head ? gstack_head->base_o_index : 0;
}

void pd_pushsym(t_pd *x) {
    t_gstack *y = (t_gstack *)malloc(sizeof(*y));
    y->what = s__X.thing;
    y->next = gstack_head;
    y->loading_abstr = pd_loading_abstr;
    y->base_o_index = x->_class == canvas_class ? ((t_canvas *)x)->next_o_index : -666;
    pd_loading_abstr = 0;
    gstack_head = y;
    s__X.thing = x;
}

void pd_popsym(t_pd *x) {
    if (!gstack_head || s__X.thing != x) {bug("gstack_pop"); return;}
    t_gstack *headwas = gstack_head;
    s__X.thing = headwas->what;
    gstack_head = headwas->next;
    free(headwas);
    lastpopped = x;
}

static void stackerror(t_pd *x) {error("stack overflow");}

/* to enable multithreading, make those variables "thread-local". this means that they have to go in
   a thread-specific place instead of plain global. do not ever use tim's atomic counters for this,
   as they count all threads together as if they're one, and they're especially incompatible with
   use of the desiredata-specific stack[] variable. */
int pd_stackn = 0; /* how much of the stack is in use */
t_call pd_stack[STACKSIZE];

static inline uint64 rdtsc() {uint64 x; __asm__ volatile (".byte 0x0f, 0x31":"=A"(x)); return x;}

//#define PROFILER
#ifdef PROFILER
#define ENTER_PROF uint64 t = rdtsc();
#define LEAVE_PROF if (x->_class->gobj && ((t_gobj *)x)->dix) ((t_gobj *)x)->dix->elapsed += rdtsc() - t;
#else
#define ENTER_PROF
#define LEAVE_PROF
#endif

#define ENTER(SELECTOR) if(pd_stackn >= STACKSIZE) {stackerror(x); return;} \
	pd_stack[pd_stackn].self = x; pd_stack[pd_stackn].s = SELECTOR; pd_stackn++; ENTER_PROF
#define LEAVE pd_stackn--; LEAVE_PROF

/* matju's 2007.07.14 inlet-based stack check needs to be implemented in:
     pd_bang pd_float pd_pointer pd_symbol pd_string pd_list pd_typedmess */
void pd_bang(t_pd *x)                    {ENTER(&s_bang);    x->_class->bangmethod(x);       LEAVE;}
void pd_float(t_pd *x, t_float f)        {ENTER(&s_float);   x->_class->floatmethod(x,f);    LEAVE;}
void pd_pointer(t_pd *x, t_gpointer *gp) {ENTER(&s_pointer); x->_class->pointermethod(x,gp); LEAVE;}
void pd_symbol(t_pd *x, t_symbol *s)     {ENTER(&s_symbol);  x->_class->symbolmethod(x,s);   LEAVE;}
/* void pd_string(t_pd *x, const char *s){ENTER(&s_symbol); x->_class->stringmethod(x,s);   LEAVE;} future use */
void pd_list(t_pd *x, t_symbol *s, int ac, t_atom *av) {ENTER(s); x->_class->listmethod(x,&s_list,ac,av); LEAVE;}

/* this file handles Max-style patchable objects, i.e., objects which
can interconnect via inlets and outlets; also, the (terse) generic
behavior for "gobjs" appears at the end of this file.  */

union inletunion {
    t_symbol *symto;
    t_gpointer *pointerslot;
    t_float *floatslot;
    t_symbol **symslot;
    t_sample floatsignalvalue;
};

struct _inlet : t_pd {
    struct _inlet *next;
    t_object *owner;
    t_pd *dest;
    t_symbol *symfrom;
    union inletunion u;
    t_symbol* tip;
};

static t_class *inlet_class, *pointerinlet_class, *floatinlet_class, *symbolinlet_class;

#define ISINLET(pd) ( \
    pd->_class ==        inlet_class || \
    pd->_class == pointerinlet_class || \
    pd->_class ==   floatinlet_class || \
    pd->_class ==  symbolinlet_class)

/* --------------------- generic inlets ala max ------------------ */

static void object_append_inlet(t_object *owner, t_inlet *x) {
    t_inlet *y = owner->inlet, *y2;
    if (y) {
        while ((y2 = y->next)) y = y2;
        y->next = x;
    } else owner->inlet = x;
}

t_inlet *inlet_new(t_object *owner, t_pd *dest, t_symbol *s1, t_symbol *s2) {
    t_inlet *x = (t_inlet *)pd_new(inlet_class);
    x->owner = owner;
    x->dest = dest;
    if (s1 == &s_signal) x->u.floatsignalvalue = 0; else x->u.symto = s2;
    x->symfrom = s1;
    x->next = 0;
    x->tip = gensym("?");
    object_append_inlet(owner,x);
    return x;
}

t_inlet *signalinlet_new(t_object *owner, t_float f) {
    t_inlet *x = inlet_new(owner, owner, &s_signal, &s_signal);
    x->u.floatsignalvalue = f;
    return x;
}

static void inlet_wrong(t_inlet *x, t_symbol *s) {
    error("inlet: expected '%s' but got '%s'", x->symfrom->name, s->name);
}

void inlet_settip(t_inlet* i,t_symbol* s) {i->tip = s;}

const char *inlet_tip(t_inlet* i,int num) {
  if (num < 0) return "???";
  while (num-- && i) i = i->next;
  if (i && i->tip) return i->tip->name;
  return "?";
}

static void inlet_bang(t_inlet *x) {
    if (x->symfrom == &s_bang) pd_vmess(x->dest, x->u.symto, "");
    else if (!x->symfrom) pd_bang(x->dest);
    else inlet_wrong(x, &s_bang);}
static void inlet_pointer(t_inlet *x, t_gpointer *gp) {
    if (x->symfrom == &s_pointer) pd_vmess(x->dest, x->u.symto, "p", gp);
    else if (!x->symfrom) pd_pointer(x->dest, gp);
    else inlet_wrong(x, &s_pointer);}
static void inlet_float(t_inlet *x, t_float f) {
    if (x->symfrom == &s_float) pd_vmess(x->dest, x->u.symto, "f", (t_floatarg)f);
    else if (x->symfrom == &s_signal) x->u.floatsignalvalue = f;
    else if (!x->symfrom) pd_float(x->dest, f);
    else inlet_wrong(x, &s_float);}
static void inlet_symbol(t_inlet *x, t_symbol *s) {
    if (x->symfrom == &s_symbol) pd_vmess(x->dest, x->u.symto, "s", s);
    else if (!x->symfrom) pd_symbol(x->dest, s);
    else inlet_wrong(x, &s_symbol);}
static void inlet_list(t_inlet *x, t_symbol *s, int argc, t_atom *argv) {
    if (x->symfrom == &s_list || x->symfrom == &s_float || x->symfrom == &s_symbol || x->symfrom == &s_pointer)
            typedmess(x->dest, x->u.symto, argc, argv);
    else if (!x->symfrom) pd_list(x->dest, s, argc, argv);
    else inlet_wrong(x, &s_list);}
static void inlet_anything(t_inlet *x, t_symbol *s, int argc, t_atom *argv) {
    if (x->symfrom == s) typedmess(x->dest, x->u.symto, argc, argv);
    else if (!x->symfrom) typedmess(x->dest, s, argc, argv);
    else inlet_wrong(x, s);}

void inlet_free(t_inlet *x) {
    t_object *y = x->owner;
    if (y->inlet == x) y->inlet = x->next;
    else for (t_inlet *x2 = y->inlet; x2; x2 = x2->next) if (x2->next == x) {x2->next = x->next; break;}
    pd_free(x);
}

/* ----- pointerinlets, floatinlets, syminlets: optimized inlets ------- */

static void pointerinlet_pointer(t_inlet *x, t_gpointer *gp) {
    gpointer_unset(x->u.pointerslot);
    *(x->u.pointerslot) = *gp;
    if (gp->o) gp->o->refcount++;
}

static void floatinlet_float(  t_inlet *x, t_float f)   {*x->u.floatslot = f;}
static void symbolinlet_symbol(t_inlet *x, t_symbol *s) {*x->u.symslot   = s;}

#define COMMON(qlass,sym,slot) \
    t_inlet *x=(t_inlet *)pd_new(qlass); \
    x->symfrom=&sym; \
    x->u.slot = p; \
    x->owner = owner; \
    x->dest = 0; \
    x->next = 0; \
    object_append_inlet(owner,x); \
    return x;

t_inlet *  floatinlet_new(t_object *owner, t_float *   p) {COMMON(  floatinlet_class,s_float  ,floatslot  )}
t_inlet * symbolinlet_new(t_object *owner, t_symbol ** p) {COMMON( symbolinlet_class,s_symbol ,symslot    )}
t_inlet *pointerinlet_new(t_object *owner, t_gpointer *p) {COMMON(pointerinlet_class,s_pointer,pointerslot)}
#undef COMMON

/* ---------------------- routine to handle lists ---------------------- */

/* objects interpret lists by feeding them to the individual inlets. Before you call this,
   check that the object doesn't have a more specific way to handle lists. */
void obj_list(t_object *x, t_symbol *s, int argc, t_atom *argv) {
    t_atom *ap;
    int count;
    t_inlet *ip = ((t_object *)x)->inlet;
    if (!argc) return;
    for (count = argc-1, ap = argv+1; ip && count--; ap++, ip = ip->next) {
        if      (ap->a_type == A_POINTER) pd_pointer(ip,ap->a_gpointer);
        else if (ap->a_type == A_FLOAT)     pd_float(ip,ap->a_float);
        else                               pd_symbol(ip,ap->a_symbol);
    }
    if      (argv->a_type == A_POINTER)   pd_pointer(x,argv->a_gpointer);
    else if (argv->a_type == A_FLOAT)       pd_float(x,argv->a_float);
    else                                   pd_symbol(x,argv->a_symbol);
}

void obj_init () {
           inlet_class = class_new(gensym("inlet"), 0, 0, sizeof(t_inlet), CLASS_PD, 0);
      floatinlet_class = class_new(gensym("inlet"), 0, 0, sizeof(t_inlet), CLASS_PD, 0);
     symbolinlet_class = class_new(gensym("inlet"), 0, 0, sizeof(t_inlet), CLASS_PD, 0);
    pointerinlet_class = class_new(gensym("inlet"), 0, 0, sizeof(t_inlet), CLASS_PD, 0);
    class_addbang(inlet_class, inlet_bang);
    class_addpointer(inlet_class, inlet_pointer);
    class_addfloat(inlet_class, inlet_float);
    class_addsymbol(inlet_class, inlet_symbol);
    class_addlist(inlet_class, inlet_list);
    class_addanything(inlet_class, inlet_anything);
    class_addfloat(    floatinlet_class,   floatinlet_float);
    class_addsymbol(  symbolinlet_class,  symbolinlet_symbol);
    class_addpointer(pointerinlet_class, pointerinlet_pointer);
}

/* --------------------------- outlets ------------------------------ */

/* this is fairly obsolete stuff, I think */
static int outlet_eventno;
void outlet_setstacklim () {outlet_eventno++;}
int sched_geteventno( void) {return outlet_eventno;}

t_inlet  *t_object:: in(int n) {t_inlet  *i= inlet; while(n--) i=i->next; return i;}
t_outlet *t_object::out(int n) {t_outlet *o=outlet; while(n--) o=o->next; return o;}

t_class *wire_class;
t_wire *wire_new (t_symbol *s, int argc, t_atom *argv) {
    t_wire *self = (t_wire *)pd_new(wire_class);
    self->g_adix = appendix_new((t_gobj *)self);
    return self;
}
void wire_free (t_wire *self) {/* nothing here */}

/* this is only used for pd_upload yet, right? so, it can use the new indices instead already */
void wire_save (t_wire *self, t_binbuf *b) {
//	t_canvas *c = self->dix->canvas;
	binbuf_addv(b,"ttiiii;","#X","connect",
//		canvas_getindex(c,self->from), self->outlet,
//		canvas_getindex(c,self->to  ), self-> inlet);
		self->from->dix->index, self->outlet,
		self->to  ->dix->index, self-> inlet);
	appendix_save((t_gobj *)self,b);
}

t_outlet *outlet_new(t_object *owner, t_symbol *s) {
    t_outlet *x = (t_outlet *)malloc(sizeof(*x)), *y, *y2;
    x->owner = owner;
    x->next = 0;
    y = owner->outlet;
    if (y) {
        while ((y2 = y->next)) y = y2;
        y->next = x;
    } else owner->outlet = x;
    x->connections = 0;
    x->sym = s;
    return x;
}

#define each_connect(oc,x) for (t_outconnect *oc = x->connections; oc; oc = oc->next)
void outlet_bang(t_outlet *x)                                         {each_connect(oc,x) pd_bang(   oc->oc_to);}
void outlet_pointer(t_outlet *x, t_gpointer *v) {t_gpointer gp = *v;   each_connect(oc,x) pd_pointer(oc->oc_to,&gp);}
void outlet_float(t_outlet *x, t_float v)                             {each_connect(oc,x) pd_float(  oc->oc_to,v);}
void outlet_symbol(t_outlet *x, t_symbol *v)                          {each_connect(oc,x) pd_symbol( oc->oc_to,v);}
void outlet_list(t_outlet *x, t_symbol *s, int argc, t_atom *argv)    {each_connect(oc,x) pd_list(   oc->oc_to,s,argc,argv);}
void outlet_anything(t_outlet *x, t_symbol *s, int argc, t_atom *argv){each_connect(oc,x) typedmess( oc->oc_to,s,argc,argv);}

void outlet_atom(t_outlet *x, t_atom *a) {
    if      (a->a_type==A_FLOAT  ) x->send(a->a_float);
    else if (a->a_type==A_SYMBOL ) x->send(a->a_symbol);
    else if (a->a_type==A_POINTER) x->send(a->a_gpointer);
    else error("can't send atom whose type is %d",a->a_type);
}

/* get the outlet's declared symbol */
t_symbol *outlet_getsymbol(t_outlet *x) {return x->sym;}

void outlet_free(t_outlet *x) {
    t_object *y = x->owner;
    if (y->outlet == x) y->outlet = x->next;
    else for (t_outlet *x2 = y->outlet; x2; x2 = x2->next) if (x2->next == x) {
        x2->next = x->next;
        break;
    }
    free(x);
}

#define each_inlet(i,obj)  for ( t_inlet *i=obj->inlet ; i; i=i->next)
#define each_outlet(o,obj) for (t_outlet *o=obj->outlet; o; o=o->next)

static t_pd *find_inlet(t_object *to, int inlet) {
    if (to->_class->firstin) {if (inlet) inlet--; else return (t_pd *)to;}
    each_inlet(i,to) if (inlet) inlet--; else return (t_pd *)i;
    return 0;
}

static t_outlet *find_outlet(t_object *from, int outlet) {
    each_outlet(o,from) if (outlet) outlet--; else return o;
    return 0;
}

t_outconnect *obj_connect(t_object *from, int outlet, t_object *to, int inlet) {
    t_outlet *o = find_outlet(from,outlet);
    t_pd *i = find_inlet(to,inlet);
    if (!o||!i) return 0;
    t_outconnect *oc = wire_new(0,0,0), *oc2;
    oc->next = 0;
    oc->oc_to = i;
    oc->from = from; oc->outlet = outlet;
    oc->to   =   to; oc->inlet  =  inlet;
    /* append it to the end of the list */
    /* LATER we might cache the last "oc" to make this faster. */
    if ((oc2 = o->connections)) {
        while (oc2->next) oc2 = oc2->next;
        oc2->next = oc;
    } else o->connections = oc;
    if (o->sym == &s_signal) canvas_update_dsp();
    return oc;
}

void obj_disconnect(t_object *from, int outlet, t_object *to, int inlet) {
    t_outlet *o = find_outlet(from,outlet); if (!o) {post("outlet does not exist"); return;}
    t_pd *i     =  find_inlet(to,   inlet); if (!i) {post( "inlet does not exist"); return;}
    t_outconnect *oc = o->connections, *oc2;
    if (!oc) {post("outlet has no connections"); return;}
    if (oc->oc_to == i) {
        o->connections = oc->next;
        pd_free(oc);
        goto done;
    }
    while ((oc2 = oc->next)) {
        if (oc2->oc_to == i) {
            oc->next = oc2->next;
            pd_free(oc2);
            goto done;
        }
        oc = oc2;
    }
    post("connection not found");
done:
    if (o->sym == &s_signal) canvas_update_dsp();
}

/* ------ traversal routines for code that can't see our structures ------ */

int obj_noutlets(t_object *x) {
    int n=0;
    each_outlet(o,x) n++;
    return n;
}

int obj_ninlets(t_object *x) {
    int n=!!x->_class->firstin;
    each_inlet(i,x) n++;
    return n;
}

t_outconnect *obj_starttraverseoutlet(t_object *x, t_outlet **op, int nout) {
    t_outlet *o = x->outlet;
    while (nout-- && o) o = o->next;
    *op = o;
    return o ? o->connections : 0;
}

t_outconnect *obj_nexttraverseoutlet(t_outconnect *lastconnect, t_object **destp, t_inlet **inletp, int *whichp) {
    t_pd *y = lastconnect->oc_to;
    if (ISINLET(y)) {
        t_inlet *i = (t_inlet *)y;
        t_object *dest = i->owner;
        int n = dest->_class->firstin;
        each_inlet(i2,dest) if (i2==i) break; else n++;
        *whichp = n;
        *destp = dest;
        *inletp = i;
    } else {
        *whichp = 0;
        *inletp = 0;
        *destp = (t_object *)y;
    }
    return lastconnect->next;
}

/* this one checks that a pd is indeed a patchable object, and returns it,
   correctly typed, or zero if the check failed. */
t_object *pd_checkobject(t_pd *x) {
    return x->_class->patchable ? (t_object *)x : 0;
}

/* move an inlet or outlet to the head of the list. this code is not safe with the latest additions in t_outconnect ! */
void obj_moveinletfirst( t_object *x,  t_inlet *i) {if (x->inlet  == i) return;
    each_inlet( i2,x) if (i2->next == i) {i2->next = i->next; i->next = x-> inlet; x-> inlet = i; return;}}
void obj_moveoutletfirst(t_object *x, t_outlet *o) {if (x->outlet == o) return;
    each_outlet(o2,x) if (o2->next == o) {o2->next = o->next; o->next = x->outlet; x->outlet = o; return;}}

/* routines for DSP sorting, which are used in d_ugen.c and g_canvas.c */
/* LATER try to consolidate all the slightly different routines. */

int obj_nsiginlets(t_object *x) {
    int n=0;
    each_inlet(i,x) if (i->symfrom == &s_signal) n++;
    if (x->_class->firstin && x->_class->floatsignalin) n++;
    return n;
}
int obj_nsigoutlets(t_object *x) {
    int n=0;
    each_outlet(o,x) if (o->sym == &s_signal) n++;
    return n;
}

/* get the index, among signal inlets, of the mth inlet overall */
int obj_siginletindex(t_object *x, int m) {
    int n=0;
    if (x->_class->firstin && x->_class->floatsignalin) {if (!m--) return 0; else n++;}
    each_inlet(i,x)  if (i->symfrom == &s_signal) {if (!m) return n; else {n++; m--;}}
    return -1;
}
int obj_sigoutletindex(t_object *x, int m) {
    int n=0;
    each_outlet(o,x) if (o->sym     == &s_signal) {if (!m) return n; else {n++; m--;}}
    return -1;
}

int obj_issignalinlet(t_object *x, int m) {
    if (x->_class->firstin) {if (!m) return x->_class->floatsignalin; else m--;}
    t_inlet *i;
    for (i = x->inlet; i && m; i = i->next, m--) {}
    return i && i->symfrom==&s_signal;
}
int obj_issignaloutlet(t_object *x, int m) {
    t_outlet *o2;
    for (o2 = x->outlet; o2 && m--; o2 = o2->next) {}
    return o2 && o2->sym==&s_signal;
}

t_sample *obj_findsignalscalar(t_object *x, int m) {
    int n = 0;
    t_inlet *i;
    if (x->_class->firstin && x->_class->floatsignalin) {
        if (!m--) return x->_class->floatsignalin > 0 ? (t_sample *)(((char *)x) + x->_class->floatsignalin) : 0;
        n++;
    }
    for (i = x->inlet; i; i = i->next, m--) if (i->symfrom == &s_signal) {
        if (m == 0) return &i->u.floatsignalvalue;
        n++;
    }
    return 0;
}

/* and those two are only used in desire.c... */
int inlet_getsignalindex(t_inlet *x) {
    int n=0; for ( t_inlet *i = x->owner-> inlet; i; i = i->next) if (i==x) return n; else if (i->symfrom == &s_signal) n++;
    return -1;}
int outlet_getsignalindex(t_outlet *x) {
    int n=0; for (t_outlet *o = x->owner->outlet; o; o = o->next) if (o==x) return n; else if (o->sym     == &s_signal) n++;
    return -1;}

#ifdef QUALIFIED_NAME
static char *pd_library_name = 0;
void pd_set_library_name(char *libname){
  pd_library_name=libname;
}
#endif

t_hash<t_symbol *, t_class *> *class_table=0;
static t_symbol *class_loadsym;     /* name under which an extern is invoked */
static void pd_defaultfloat(t_pd *x, t_float f);
static void pd_defaultlist(t_pd *x, t_symbol *s, int argc, t_atom *argv);
t_pd pd_objectmaker;    /* factory for creating "object" boxes */
t_pd pd_canvasmaker;    /* factory for creating canvases */

static t_symbol *class_extern_dir = &s_;

static void pd_defaultanything(t_pd *x, t_symbol *s, int argc, t_atom *argv) {
    error("%s: no method for '%s'", x->_class->name->name, s->name);
}

static void pd_defaultbang(t_pd *x) {
    t_class *c = pd_class(x);
    if (c->listmethod != pd_defaultlist) c->listmethod(x,0,0,0);
    else c->anymethod(x,&s_bang,0,0);
}

static void pd_defaultfloat(t_pd *x, t_float f) {
    t_class *c = pd_class(x); t_atom at; SETFLOAT(&at, f);
    if (c->listmethod != pd_defaultlist) c->listmethod(x,0,1,&at); else c->anymethod(x,&s_float,1,&at);
}
static void pd_defaultsymbol(t_pd *x, t_symbol *s) {
    t_class *c = pd_class(x); t_atom at; SETSYMBOL(&at, s);
    if (c->listmethod != pd_defaultlist) c->listmethod(x,0,1,&at); else c->anymethod(x,&s_symbol,1,&at);
}
static void pd_defaultpointer(t_pd *x, t_gpointer *gp) {
    t_class *c = pd_class(x); t_atom at; SETPOINTER(&at, gp);
    if (c->listmethod != pd_defaultlist) c->listmethod(x,0,1,&at); else c->anymethod(x,&s_pointer,1,&at);
}

void obj_list(t_object *x, t_symbol *s, int argc, t_atom *argv);
static void class_nosavefn(t_gobj *z, t_binbuf *b);

/* handle "list" messages to Pds without explicit list methods defined. */
static void pd_defaultlist(t_pd *x, t_symbol *s, int argc, t_atom *argv) {
    t_class *c = pd_class(x);
    /* a list with no elements is handled by the 'bang' method if one exists. */
    if (argc == 0 && c->bangmethod != pd_defaultbang) {c->bangmethod(x); return;}
    /* a list with one element which is a number can be handled by a
       "float" method if any is defined; same for "symbol", "pointer". */
    if (argc == 1) {
#define HANDLE(A,M,D,F) if (argv->a_type==A && c->M != D) {c->M(x, argv->a_w.F); return;}
	HANDLE(A_FLOAT  ,floatmethod  ,pd_defaultfloat  ,w_float)
	HANDLE(A_SYMBOL ,symbolmethod ,pd_defaultsymbol ,w_symbol)
	HANDLE(A_POINTER,pointermethod,pd_defaultpointer,w_gpointer)
    }
    /* Next try for an "anything" method; if the object is patchable (i.e.,
       can have proper inlets) send it on to obj_list which will unpack the
       list into the inlets. otherwise gove up and complain. */
    if (c->anymethod != pd_defaultanything) c->anymethod(x,&s_list,argc,argv);
    else if (c->patchable) obj_list((t_object *)x, s, argc, argv);
    else pd_defaultanything(x, &s_list, argc, argv);
}

t_symbol *qualified_name(t_symbol *s) {
    char *buf;
    asprintf(&buf, "%s%s%s", pd_library_name, QUALIFIED_NAME, s->name);
    t_symbol *sym = gensym(buf);
    free(buf);
    return sym;
}

#undef class_new2
#undef class_addcreator2
#undef class_addmethod2

/* Note that some classes such as "select", are actually two classes of the same name,
   one for the single-argument form, one for the multiple one; see select_setup() to
   find out how this is handled.  */
t_class *class_new2(const char *ss, t_newmethod newmethod, t_method freemethod,
size_t size, int flags, const char *sig) {
    t_symbol *s = ss?gensym(ss):0;
    int typeflag = flags & CLASS_TYPEMASK;
    if (!typeflag) typeflag = CLASS_PATCHABLE;
#ifdef QUALIFIED_NAME
    if (pd_library_name) s = qualified_name(s);
#endif
    if (pd_objectmaker._class && newmethod) {
        /* add a "new" method by the name specified by the object */
        class_addmethod2(pd_objectmaker._class, (t_method)newmethod, s->name, sig);
        if (class_loadsym) {
            /* if we're loading an extern it might have been invoked by a
            longer file name; in this case, make this an admissible name too. */
            char *loadstring = class_loadsym->name, l1 = strlen(s->name), l2 = strlen(loadstring);
            if (l2 > l1 && !strcmp(s->name, loadstring + (l2 - l1)))
                class_addmethod2(pd_objectmaker._class, (t_method)newmethod, class_loadsym->name, sig);
        }
    }
    t_class *c = (t_class *)malloc(sizeof(*c));
    c->name = c->helpname = s;
    c->size = size;
    c->methods = (t_methodentry *)malloc(1);
    c->nmethod = 0;
    c->freemethod    = (t_method)freemethod;
    c->bangmethod    = pd_defaultbang;
    c->pointermethod = pd_defaultpointer;
    c->floatmethod   = pd_defaultfloat;
    c->symbolmethod  = pd_defaultsymbol;
    c->listmethod    = pd_defaultlist;
    c->anymethod     = pd_defaultanything;
    c->firstin = ((flags & CLASS_NOINLET) == 0);
    c->firsttip = gensym("?");
    c->fields = (t_symbol **)malloc(sizeof(t_symbol *)*31);
    c->nfields = 0;
    c->patchable = (typeflag == CLASS_PATCHABLE);
    c->gobj = (typeflag >= CLASS_GOBJ);
    c->drawcommand = 0;
    c->floatsignalin = 0;
    c->externdir = class_extern_dir;
    c->savefn = (typeflag == CLASS_PATCHABLE ? text_save : class_nosavefn);
#ifdef QUALIFIED_NAME
    // like a class_addcreator
    if (pd_library_name && newmethod) class_addmethod2(pd_objectmaker._class, (t_method)newmethod, ss, sig);
#endif
    c->onsubscribe = gobj_onsubscribe;
    class_table->set(c->name, c);
    return c;
}

/* add a creation method, which is a function that returns a Pd object
   suitable for putting in an object box.  We presume you've got a class it
   can belong to, but this won't be used until the newmethod is actually
   called back (and the new method explicitly takes care of this.) */
void class_addcreator2(const char *ss, t_newmethod newmethod, const char *sig) {
    t_symbol *s = gensym(ss);
    class_addmethod2(pd_objectmaker._class, (t_method)newmethod, ss, sig);
#ifdef QUALIFIED_NAME
    class_addmethod2(pd_objectmaker._class, (t_method)newmethod, pd_library_name ? qualified_name(s)->name : ss, sig);
#endif
    class_table->set(s,0);
}

void class_addmethod2(t_class *c, t_method fn, const char *ss, const char *fmt) {
    t_symbol *sel = gensym(ss);
    t_methodentry *m;
    int argtype = *fmt++;
    /* "signal" method specifies that we take audio signals but
       that we don't want automatic float to signal conversion.  This
       is obsolete; you should now use the CLASS_MAINSIGNALIN macro. */
    if (sel == &s_signal) {
        if (c->floatsignalin) post("warning: signal method overrides class_mainsignalin");
        c->floatsignalin = -1;
    }
    /* check for special cases.  "Pointer" is missing here so that
       pd_objectmaker's pointer method can be typechecked differently.  */
    /* is anyone actually using those five cases? */
    if      (sel==&s_bang)     {if (argtype)            goto phooey; class_addbang(    c,fn);}
    else if (sel==&s_float)    {if (argtype!='f'||*fmt) goto phooey; class_doaddfloat( c,fn);}
    else if (sel==&s_symbol)   {if (argtype!='s'||*fmt) goto phooey; class_addsymbol(  c,fn);}
    else if (sel==&s_list)     {if (argtype!='*')       goto phooey; class_addlist(    c,fn);}
    else if (sel==&s_anything) {if (argtype!='*')       goto phooey; class_addanything(c,fn);}
    else {
	/* SLOW, especially for [objectmaker] */
        c->methods = (t_methodentry *)realloc(c->methods, (c->nmethod+1) * sizeof(*c->methods));
        m = c->methods + c->nmethod;
        c->nmethod++;
        m->me_name = sel;
        m->me_fun = (t_gotfn)fn;
        int nargs = 0;
        while (argtype && nargs < MAXPDARG) {
	    t_atomtype t;
	    switch(argtype) {
		case 'f': t=A_FLOAT;    break;
		case 's': t=A_SYMBOL;   break;
		case 'p': t=A_POINTER;  break;
		case ';': t=A_SEMI;     break;
		case ',': t=A_COMMA;    break;
		case 'F': t=A_DEFFLOAT; break;
		case 'S': t=A_DEFSYMBOL;break;
		case '$': t=A_DOLLAR;   break;
		case '@': t=A_DOLLSYM;  break;
		case '*': t=A_GIMME;    break;
		case '!': t=A_CANT;     break;
		default: goto phooey;
	    };
            m->me_arg[nargs++] = t;
            argtype = *fmt++;
        }
        if (argtype) error("%s_%s: only 5 arguments are typecheckable; use A_GIMME aka '*'", c->name->name, sel->name);
        m->me_arg[nargs] = A_NULL;
    }
    return;
phooey:
    bug("class_addmethod: %s_%s: bad argument types", c->name->name, sel->name);
}

#define COMMON(R) \
    char fmt[42],*f=fmt; va_list ap; va_start(ap,arg1); int t=arg1; \
    while(t) {if (t>A_CANT) {error("%s: ARRGH! t=%d",__func__,t); return R;} *f++ = " fsp;,FS$@*!"[t]; t=(t_atomtype)va_arg(ap,int);} \
    *f=0; va_end(ap);
    
t_class *class_new(t_symbol *s, t_newmethod newmethod, t_method freemethod, size_t size, int flags, t_atomtypearg arg1, ...) {
    COMMON(0); return class_new2(s?s->name:0,newmethod,freemethod,size,flags,fmt);
}
void class_addcreator(t_newmethod newmethod, t_symbol *s, t_atomtypearg arg1, ...) {
    COMMON(); class_addcreator2(s?s->name:0,newmethod,fmt);
}
void class_addmethod(t_class *c, t_method fn, t_symbol *sel, t_atomtypearg arg1, ...) {
    COMMON(); class_addmethod2(c,fn,sel->name,fmt);
}
#undef COMMON

/* see also the "class_addfloat", etc.,  macros in m_pd.h */
#undef class_addbang
#undef class_addpointer
#undef class_addsymbol
#undef class_addlist
#undef class_addanything
void class_addbang(    t_class *c, t_method fn) {c->   bangmethod =    (t_bangmethod)fn;}
void class_addpointer( t_class *c, t_method fn) {c->pointermethod = (t_pointermethod)fn;}
void class_doaddfloat( t_class *c, t_method fn) {c->  floatmethod =   (t_floatmethod)fn;}
void class_addsymbol(  t_class *c, t_method fn) {c-> symbolmethod =  (t_symbolmethod)fn;}
void class_addlist(    t_class *c, t_method fn) {c->   listmethod =    (t_listmethod)fn;}
void class_addanything(t_class *c, t_method fn) {c->    anymethod =     (t_anymethod)fn;}

char *class_getname(       t_class *c)     {return c->name->name;}
char *class_gethelpname(   t_class *c) {return c->helpname->name;}
void  class_sethelpsymbol( t_class *c, t_symbol *s) {c->helpname = s;}
void  class_setdrawcommand(t_class *c) {c->drawcommand = 1;}
int   class_isdrawcommand( t_class *c) {return c->drawcommand;}
void  class_setnotice(     t_class *c, t_notice      notice     ) {c->notice      = notice     ;}
void  class_setonsubscribe(t_class *c, t_onsubscribe onsubscribe) {c->onsubscribe = onsubscribe;}

static void pd_floatforsignal(t_pd *x, t_float f) {
    int offset = x->_class->floatsignalin;
    if (offset>0) *(t_sample *)((char *)x + offset) = f;
    else error("%s: float unexpected for signal input", x->_class->name->name);
}

void class_domainsignalin(t_class *c, int onset) {
    if (onset <= 0) onset = -1;
    else {
        if (c->floatmethod != pd_defaultfloat) post("warning: %s: float method overwritten", c->name->name);
        c->floatmethod = (t_floatmethod)pd_floatforsignal;
    }
    c->floatsignalin = onset;
}

void class_set_extern_dir(t_symbol *s) {class_extern_dir = s;}
char *class_gethelpdir(t_class *c) {return c->externdir->name;}

static void class_nosavefn(t_gobj *z, t_binbuf *b) {bug("save function called but not defined");}
void class_setsavefn(t_class *c, t_savefn f) {c->savefn = f;}
t_savefn class_getsavefn(t_class *c) {return  c->savefn;}

/* ---------------- the symbol table ------------------------ */

/* tb: new 16 bit hash table: multiplication hash */
#ifndef NEWHASH
#define HASHSIZE 1024
#else
#define HASHSIZE 65536
#define HASHFACTOR 40503 /* donald knuth: (sqrt(5) - 1)/2*pow(2,16) */
#endif

#ifdef NEWHASH
static short hash(const char *s, size_t n) {
    unsigned short hash1 = 0, hash2 = 0;
#else
static int hash(const char *s, size_t n) {
    unsigned int hash1 = 0, hash2 = 0;
#endif
    const char *s2 = s;
    while (n) {
        hash1 += *s2;
        hash2 += hash1;
        s2++;
	n--;
    }
    return hash2;
}

/* tb: made dogensym() threadsafe */
static t_symbol *symhash[HASHSIZE];
t_symbol *dogensym(const char *s, size_t n, t_symbol *oldsym) {
#ifdef THREADSAFE_GENSYM
    static pthread_mutex_t hash_lock = PTHREAD_MUTEX_INITIALIZER;
#endif
    t_symbol **sym1, *sym2;
#ifdef NEWHASH
    unsigned short hash2 = hash(s,n);
#else
    unsigned int   hash2 = hash(s,n);
#endif
#ifdef NEWHASH
	hash2 = hash2 * HASHFACTOR;
	sym1 = symhash + hash2;
#else
	sym1 = symhash + (hash2 & (HASHSIZE-1));
#endif
    while ((sym2 = *sym1)) {
        if (!strcmp(sym2->name, s)) return sym2;
        sym1 = &sym2->next;
    }
#ifdef THREADSAFE_GENSYM
    pthread_mutex_lock(&hash_lock);
    /* tb: maybe another thread added the symbol to the hash table; double check */
    while (sym2 = *sym1) {
        if (!strcmp(sym2->name, s)) {
	    pthread_mutex_unlock(&hash_lock);
	    return sym2;
	}
        sym1 = &sym2->next;
    }
#endif

    if (oldsym) sym2 = oldsym;
    else {
        sym2 = (t_symbol *)malloc(sizeof(*sym2));
        sym2->name = (char *)malloc(n+1);
        sym2->next = 0;
        sym2->thing = 0;
        memcpy(sym2->name, s, n);
	sym2->name[n]=0;
	sym2->n=n;
    }
    *sym1 = sym2;
#ifdef THREADSAFE_GENSYM
	pthread_mutex_unlock(&hash_lock);
#endif
    return sym2;
}

t_symbol *gensym( const char *s) {return dogensym(s,strlen(s),0);}
t_symbol *gensym2(const char *s, size_t n) {return dogensym(s,n,0);}
extern "C" t_symbol *symprintf(const char *s, ...) {
    char *buf;
    va_list args;
    va_start(args,s);
    vasprintf(&buf,s,args);
    va_end(args);
    t_symbol *r = gensym(buf);
    free(buf);
    return r;
}

bool symbol_lt (t_symbol *a, t_symbol *b) {return strcmp(a->name,b->name)<0;}

void glob_symbol_table (t_pd *, float onlybound) {
    post("symbol_table = {");
    std::vector<t_symbol *> all;
    for (size_t i=0; i<int(sizeof(symhash)/sizeof(*symhash)); i++) for (t_symbol *s=symhash[i]; s; s=s->next) all.push_back(s);
    sort(all.begin(),all.end(),symbol_lt);
    for (size_t i=0; i<all.size(); i++) {
        int j=0;
	if (all[i]->thing) {
	  if (all[i]->thing->_class==bindlist_class) j=2; else j=1;
	}
        if (j>0 || !onlybound) post("  %0*lx: %s (%d)",2*sizeof(void*),long(all[i]),all[i]->name,j);
    }
    post("}");
}

static int tryingalready;
extern "C" void canvas_popabstraction(t_canvas *x);
extern t_pd *newest;
t_symbol* pathsearch(t_symbol *s,char* ext);
int pd_setloadingabstraction(t_symbol *sym);

/* this routine is called when a new "object" is requested whose class Pd
   doesn't know.  Pd tries to load it as an extern, then as an abstraction. */
void new_anything(void *dummy, t_symbol *s, int argc, t_atom *argv) {
    int fd;
    char *dirbuf, *nameptr;
    if (tryingalready) return;
    newest = 0;
    class_loadsym = s;
    if (sys_load_lib(canvas_getcurrent(), s->name)) {
        tryingalready = 1;
        typedmess((t_pd *)dummy, s, argc, argv);
        tryingalready = 0;
        return;
    }
    class_loadsym = 0;
    t_pd *current = s__X.thing;
    if ((fd = canvas_open2(canvas_getcurrent(), s->name, ".pd",  &dirbuf, &nameptr, 0)) >= 0 ||
        (fd = canvas_open2(canvas_getcurrent(), s->name, ".pat", &dirbuf, &nameptr, 0)) >= 0) {
        close(fd);
        if (!pd_setloadingabstraction(s)) {
            canvas_setargs(argc, argv); /* bug fix by Krzysztof Czaja */
            binbuf_evalfile(gensym(nameptr), gensym(dirbuf));
            if (s__X.thing != current) canvas_popabstraction((t_canvas *)s__X.thing);
            canvas_setargs(0, 0);
        } else error("%s: can't load abstraction within itself", s->name);
        free(dirbuf);
    } else newest = 0;
}

#define MAKESYM(CSYM,S) t_symbol CSYM = {(char *)(S),0,0,1,0xdeadbeef};
MAKESYM(s_pointer ,"pointer")
MAKESYM(s_float   ,"float")
MAKESYM(s_symbol  ,"symbol")
MAKESYM(s_bang    ,"bang")
MAKESYM(s_list    ,"list")
MAKESYM(s_anything,"anything")
MAKESYM(s_signal  ,"signal")
MAKESYM(s__N      ,"#N")
MAKESYM(s__X      ,"#X")
MAKESYM(s_x       ,"x")
MAKESYM(s_y       ,"y")
MAKESYM(s_        ,"")

static t_symbol *symlist[] = { &s_pointer, &s_float, &s_symbol, &s_bang,
    &s_list, &s_anything, &s_signal, &s__N, &s__X, &s_x, &s_y, &s_};

t_pd *newest;

/* This is externally available, but note that it might later disappear; the
whole "newest" thing is a hack which needs to be redesigned. */
t_pd *pd_newest () {return newest;}

    /* horribly, we need prototypes for each of the artificial function
    calls in typedmess(), to keep the compiler quiet. */
typedef t_pd *(*t_newgimme)(t_symbol *s, int argc, t_atom *argv);
typedef void(*t_messgimme)(t_pd *x, t_symbol *s, int argc, t_atom *argv);

#define REST t_floatarg d1, t_floatarg d2, t_floatarg d3, t_floatarg d4, t_floatarg d5
typedef t_pd *(*t_fun0)(REST);
typedef t_pd *(*t_fun1)(t_int i1, REST);
typedef t_pd *(*t_fun2)(t_int i1, t_int i2, REST);
typedef t_pd *(*t_fun3)(t_int i1, t_int i2, t_int i3, REST);
typedef t_pd *(*t_fun4)(t_int i1, t_int i2, t_int i3, t_int i4, REST);
typedef t_pd *(*t_fun5)(t_int i1, t_int i2, t_int i3, t_int i4, t_int i5, REST);
typedef t_pd *(*t_fun6)(t_int i1, t_int i2, t_int i3, t_int i4, t_int i5, t_int i6, REST);
#undef REST

void pd_typedmess_2(t_pd *x, t_symbol *s, int argc, t_atom *argv) {
    t_class *c = x->_class;
    t_atomtype *wp, wanttype;
    t_int      ai[MAXPDARG+1], *ap = ai;
    t_floatarg ad[MAXPDARG+1], *dp = ad;
    int narg = 0;
    /* check for messages that are handled by fixed slots in the class structure.  We don't catch "pointer"
       though so that sending "pointer" to pd_objectmaker doesn't require that we supply a pointer value. */
    if (s == &s_float) {
        if (!argc) c->floatmethod(x, 0.);
        else if (argv->a_type == A_FLOAT) c->floatmethod(x, argv->a_float);
        else error("expected one float, in class [%s]", c->name->name);
        return;
    }
    if (s == &s_bang) {c->bangmethod(x); return;}
    if (s == &s_list) {c->listmethod(x,s,argc,argv); return;}
    if (s == &s_symbol) {c->symbolmethod(x, argc && argv->a_type==A_SYMBOL ? argv->a_symbol : &s_); return;}
    t_methodentry *m = c->methods;
    for (int i = c->nmethod; i--; m++) if (m->me_name == s) {
        wp = m->me_arg;
        if (*wp == A_GIMME) {
            if (x == &pd_objectmaker) pd_set_newest(((t_newgimme)(m->me_fun))(  s,argc,argv));
            else                                   ((t_messgimme)(m->me_fun))(x,s,argc,argv);
            return;
        }
        if (argc > MAXPDARG) argc = MAXPDARG;
        if (x != &pd_objectmaker) *(ap++) = (t_int)x, narg++;
        while ((wanttype = *wp++)) {
            switch (wanttype) {
            case A_POINTER:
                if (!argc) goto badarg;
                if (argv->a_type!=A_POINTER) goto badarg;
                *ap = t_int(argv->a_gpointer);
                argc--; argv++;
                narg++;
                ap++;
                break;
            case A_FLOAT:    if (!argc) goto badarg;
            case A_DEFFLOAT: if (!argc) *dp = 0;
                else {
                    if (argv->a_type!=A_FLOAT) goto badarg;
                    *dp = argv->a_float;
                    argc--; argv++;
                }
                dp++;
                break;
            case A_SYMBOL: if (!argc) goto badarg;
            case A_DEFSYM: if (!argc) *ap = t_int(&s_);
                else {
                    if (argv->a_type == A_SYMBOL) *ap = t_int(argv->a_symbol);
                    /* if it's an unfilled "dollar" argument it appears as zero here; cheat and bash it to the null
                       symbol.  Unfortunately, this lets real zeros pass as symbols too, which seems wrong... */
                    else if (x == &pd_objectmaker && argv->a_type == A_FLOAT && argv->a_float == 0)
                        *ap = t_int(&s_);
                    else goto badarg;
                    argc--; argv++;
                }
                narg++;
                ap++;
            default: {}
            }
        }
        t_pd *bonzo;
        switch (narg) {
#define REST ad[0],ad[1],ad[2],ad[3],ad[4]
        case 0 : bonzo = ((t_fun0)(m->me_fun))(                                    REST); break;
        case 1 : bonzo = ((t_fun1)(m->me_fun))(ai[0],                              REST); break;
        case 2 : bonzo = ((t_fun2)(m->me_fun))(ai[0],ai[1],                        REST); break;
        case 3 : bonzo = ((t_fun3)(m->me_fun))(ai[0],ai[1],ai[2],                  REST); break;
        case 4 : bonzo = ((t_fun4)(m->me_fun))(ai[0],ai[1],ai[2],ai[3],            REST); break;
        case 5 : bonzo = ((t_fun5)(m->me_fun))(ai[0],ai[1],ai[2],ai[3],ai[4],      REST); break;
        case 6 : bonzo = ((t_fun6)(m->me_fun))(ai[0],ai[1],ai[2],ai[3],ai[4],ai[5],REST); break;
        default: bonzo = 0;
        }
        if (x == &pd_objectmaker) pd_set_newest(bonzo);
        return;
    }
    c->anymethod(x, s, argc, argv);
    return;
badarg:
    error("Bad arguments for message '%s' to object '%s'", s->name, c->name->name);
}

void pd_typedmess(t_pd *x, t_symbol *s, int argc, t_atom *argv) {
	ENTER(s); pd_typedmess_2(x,s,argc,argv); LEAVE;
}

void pd_vmess(t_pd *x, t_symbol *sel, const char *fmt, ...) {
    va_list ap;
    t_atom arg[MAXPDARG], *at =arg;
    int nargs = 0;
    const char *fp = fmt;
    va_start(ap, fmt);
    while (1) {
        if (nargs > MAXPDARG) {
            error("pd_vmess: only %d allowed", MAXPDARG);
            break;
        }
        switch(*fp++) {
        case 'f': SETFLOAT(at,   va_arg(ap,       double)); break;
        case 's': SETSYMBOL(at,  va_arg(ap,   t_symbol *)); break;
        case 'i': SETFLOAT(at,   va_arg(ap,        t_int)); break;
        case 'p': SETPOINTER(at, va_arg(ap, t_gpointer *)); break;
        default: goto done;
        }
        at++;
        nargs++;
    }
done:
    va_end(ap);
    typedmess(x, sel, nargs, arg);
}

void pd_forwardmess(t_pd *x, int argc, t_atom *argv) {
    if (argc) {
        t_atomtype t = argv->a_type;
        if      (t==A_SYMBOL)   pd_typedmess(x, argv->a_symbol, argc-1, argv+1);
        else if (t==A_POINTER) {if (argc==1) pd_pointer(x, argv->a_gpointer); else pd_list(x, &s_list, argc, argv);}
	else if (t==A_FLOAT)   {if (argc==1) pd_float(  x, argv->a_float);    else pd_list(x, &s_list, argc, argv);}
        else bug("pd_forwardmess");
    }
}

void nullfn () {}

t_gotfn getfn(t_pd *x, t_symbol *s) {
    t_class *c = x->_class; t_methodentry *m = c->methods;
    for (int i=c->nmethod; i--; m++) if (m->me_name == s) return m->me_fun;
    error("%s: no method for message '%s'", c->name->name, s->name);
    return (t_gotfn)nullfn;
}
t_gotfn zgetfn(t_pd *x, t_symbol *s) {
    t_class *c = x->_class; t_methodentry *m = c->methods;
    for (int i=c->nmethod; i--; m++) if (m->me_name == s) return m->me_fun;
    return 0;
}

void class_settip(t_class *x,t_symbol* s) {x->firsttip = s;}

/* must be called only once */
void class_setfieldnames(t_class *x, const char *s) {
    char foo[64];
    while (*s) {
	char *t = strchr(s,' ');
	int i = t-s;
	if (!t) return;
	memcpy(foo,s,i);
	foo[i]=0;
	x->fields[x->nfields++] = gensym(foo);
	s=s+i+1;
    }
}

int class_getfieldindex(t_class *x, const char *s) {
	t_symbol *sy = gensym((char *)s);
	for (int i=0; i<x->nfields; i++) if (x->fields[i]==sy) return i;
	return -1;
}

/* O(n) asymptotic time :-} */
/* only looks for already loaded classes though. */

t_class *class_find (t_symbol *s) {return (t_class *)class_table->get(s);}

void glob_update_class_info (t_pd *bogus, t_symbol *s, t_symbol *cb_recv, t_symbol *cb_sel) {
    t_class *c = class_find(s);
    if (!c) { post("class not found!"); return; }
    sys_vgui("global class_info; set class_info(%s) [list "
                "helpname \"%s\" externdir \"%s\" size \"%d\" "
/*
    t_methodentry *c_methods; int c_nmethod;
    t_method c_freemethod;
    t_savefn c_savefn;
    int c_floatsignalin;
*/
    "gobj \"%d\" patchable \"%d\" firstin \"%d\" "
    "firsttip \"%s\" methods {",s->name,c->helpname->name,c->externdir->name,
	c->size,c->gobj,c->patchable,c->firstin,c->firsttip->name);
    if (c->   bangmethod != pd_defaultbang)     sys_vgui("<bang> ");
    if (c->pointermethod != pd_defaultpointer)  sys_vgui("<pointer> ");
    if (c->  floatmethod != pd_defaultfloat)    sys_vgui("<float> ");
    if (c-> symbolmethod != pd_defaultsymbol)   sys_vgui("<symbol> ");
    if (c->   listmethod != pd_defaultlist)     sys_vgui("<list> ");
    if (c->    anymethod != pd_defaultanything) sys_vgui("<any> ");
    for (int i=0; i<c->nmethod; i++) sys_vgui("%s ",c->methods[i].me_name->name);
    sys_vgui("}]; %s %s %s\n",cb_recv->name, cb_sel->name, s->name);
}

t_class *binbuf_class;

t_binbuf *binbuf_new () {
    t_binbuf *x = (t_binbuf *)pd_new(binbuf_class);
    x->n = 0;
    x->capa = 1;
    x->v = (t_atom *)malloc(1*sizeof(t_atom));
    return x;
}

/* caution: capa >= x->n and capa >= 1 too */
static void binbuf_capa(t_binbuf *x, int capa) {
    x->v = (t_atom *)realloc(x->v, capa*sizeof(*x->v));
    x->capa = capa;
}

void binbuf_free(t_binbuf *x) {pd_free(x);}
void binbuf_free2(t_binbuf *x) {free(x->v);}

t_binbuf *binbuf_duplicate(t_binbuf *y) {
    t_binbuf *x = (t_binbuf *)malloc(sizeof(*x));
    x->capa = x->n = y->n;
    x->v = (t_atom *)malloc(x->n * sizeof(*x->v));
    memcpy(x->v,y->v,x->n*sizeof(*x->v));
    return x;
}

void binbuf_clear(t_binbuf *x) {
    x->n = 0;
    x->v = (t_atom *)realloc(x->v,4);
    x->capa = 4;
}

/* called just after a doublequote in version 1 parsing */
const char *binbuf_text_quoted(t_binbuf *x, const char *t, char *end) {
	ostringstream buf;
	while (t!=end) {
		char c = *t++;
		if (c=='"') break;
		if (c!='\\') {buf << c; continue;}
		c = *t++;
		if (c=='a') {buf << '\a'; continue;}
		if (c=='b') {buf << '\b'; continue;}
		if (c=='f') {buf << '\f'; continue;}
		if (c=='n') {buf << '\n'; continue;}
		if (c=='r') {buf << '\r'; continue;}
		if (c=='v') {buf << '\v'; continue;}
		if (c=='t') {buf << '\t'; continue;}
		if (c=='"') {buf << '\"'; continue;}
		if (c=='\\'){buf << '\\'; continue;}
		if (c=='\n'){continue;}
		/* if (c=='u') ... */
		/* if (c=='x') ... */
		/* if (isdigit(c)) ... */
		buf << c; /* ignore syntax error (should it?) */
	}
	binbuf_addv(x,"t",buf.str().data());
	return t; /* ignore syntax error (should it?) */
}

/* find the first atom in text, in any, and add it to this binbuf;
   returns pointer to end of atom text */
/* this one is for pd format version 1 */
/* TODO: double-quotes, braces, test backslashes&dollars */
const char *binbuf_text_matju(t_binbuf *x, const char *t, const char *end) {
	int doll=0;
	while (t!=end && isspace(*t)) t++;
	if (t==end) return t;
	if (*t==';') {binbuf_addv(x,";"); return t+1;}
	if (*t==',') {binbuf_addv(x,","); return t+1;}
	/* if (*t=='"') return binbuf_text_quoted(x,t,end); */
	if (*t=='+' || *t=='-' || *t=='.' || isdigit(*t)) {
	    char *token;
	    double v = strtod(t,&token);
	    if (t==end || isspace(*token)) {binbuf_addv(x,"f",v); return token;}
	}
	ostringstream buf;
	for (; t!=end && *t!=',' && *t!=';' && !isspace(*t); ) {
		doll |= t[0]=='$' && t+1!=end && isdigit(t[1]);
		if (*t=='\\') t++;
		if (t!=end) buf << *t++;
	}
	if (doll) {
		const char *b = buf.str().data();
		if (b[0]!='$') doll=0;
		for (b++; *b; b++) if (!isdigit(*b)) doll=0;
		if (doll) binbuf_addv(x,"$",atoi(buf.str().data()+1));
		else      binbuf_addv(x,"&",gensym(buf.str().data()));
	} else            binbuf_addv(x,"t",buf.str().data());
	return t;
}

/* this one is for pd format version 0 */
const char *binbuf_text_miller(t_binbuf *x, const char *t, const char *end) {
    ostringstream buf;
    /* it's an atom other than a comma or semi */
    int q = 0, slash = 0, lastslash = 0, dollar = 0;
    /* skip leading space */
    while (t!=end && isspace(*t)) t++;
    if (t==end) return t;
    if (*t==';') {binbuf_addv(x,";"); return t+1;}
    if (*t==',') {binbuf_addv(x,","); return t+1;}
    do {
	char c = *t++;
	lastslash = slash;
	slash = c=='\\';
	if (q >= 0) {
	  int digit = isdigit(c), dot=c=='.', minus=c=='-', plusminus=minus||c=='+', expon=c=='e'||c=='E';
	  if      (q==0) { /* beginning */ if (minus) q=1; else if (digit) q=2; else if (dot) q=3; else q=-1;}
	  else if (q==1) { /* got minus */                      if (digit) q=2; else if (dot) q=3; else q=-1;}
	  else if (q==2) { /* got digits */               if (dot) q=4; else if (expon) q=6; else if (!digit) q=-1;}
	  else if (q==3) { /* got '.' without digits */ if (digit) q=5; else q=-1;}
	  else if (q==4) { /* got '.'   after digits */ if (digit) q=5; else if (expon) q=6; else q=-1;}
	  else if (q==5) { /* got digits after . */                          if (expon) q=6; else if (!digit) q=-1;}
	  else if (q==6) { /* got 'e' */ if (plusminus) q=7; else if (digit) q=8; else q=-1;}
	  else if (q==7) { /* got plus or minus */ if (digit) q=8; else q=-1;}
	  else if (q==8) { /* got digits */ if (!digit) q=-1;}
	}
	if (!lastslash && c == '$' && t!=end && isdigit(*t)) dollar = 1;
#if 1
	if (slash&&lastslash) slash=0;
#endif
	if (!slash) buf << c;
    } while (t!=end && (slash || !strchr(" \n\r\t,;",*t)));
    if (q == 2 || q == 4 || q == 5 || q == 8) {binbuf_addv(x,"f",atof(buf.str().data())); return t;}
    /* LATER try to figure out how to mix "$" and "\$" correctly; here, the backslashes were already
       stripped so we assume all "$" chars are real dollars.  In fact, we only know at least one was. */
    if (dollar) {
        const char *b = buf.str().data();
        //printf("b=%s\n",b);
	if (*b != '$') dollar = 0;
	for (b++; *b; b++) if (!isdigit(*b)) dollar = 0;
	if (dollar) binbuf_addv(x,"$",atoi(buf.str().data()+1));
	else        binbuf_addv(x,"&",gensym(buf.str().data()));
    } else          binbuf_addv(x,"t",buf.str().data());
    return t;
}

int sys_syntax = 0;

void binbuf_text(t_binbuf *x, const char *t, size_t size) {
	const char *end=t+size;
	binbuf_clear(x);
	while (t!=end) t = sys_syntax ? binbuf_text_matju(x,t,end) : binbuf_text_miller(x,t,end);
	binbuf_capa(x,x->n);
}

void pd_eval_text(const char *t, size_t size) {
	t_binbuf *x = binbuf_new();
	const char *end = t+size;
	while (t!=end) {
		t = sys_syntax ? binbuf_text_matju(x,t,end) : binbuf_text_miller(x,t,end);
		if (x->n && x->v[x->n-1].a_type == A_SEMI) {
			binbuf_eval(x,0,0,0);
			binbuf_clear(x);
		}
	}
	binbuf_free(x);
}

namespace desire {
void voprintf(ostream &buf, const char *s, va_list args) {
    char *b;
    vasprintf(&b,s,args);
    buf << b;
    free(b);
}
void oprintf(ostream &buf, const char *s, ...) {
    va_list args;
    va_start(args,s);
    voprintf(buf,s,args);
    va_end(args);
}
};//end namespace desire

/* convert a binbuf to text; no null termination. */
void binbuf_gettext(t_binbuf *x, char **bufp, int *lengthp) {
    ostringstream buf;
    t_atom *ap = x->v;
    char nextdelim=0;
    for (int i=x->n; i--; ap++) {
    	if (ap->a_type != A_SEMI && ap->a_type != A_COMMA && nextdelim) buf << (char)nextdelim;
        atom_ostream(ap,buf);
        nextdelim = ap->a_type == A_SEMI ? '\n' : ' ';
    }
    //if (nextdelim) buf << (char)nextdelim;
    *bufp = strdup(buf.str().data());
    *lengthp = buf.str().size();// - (nextdelim == ' ');
}

/* convert a binbuf to text with null termination, as return value */
char *binbuf_gettext2(t_binbuf *x) {
  char *buf; int n;
  binbuf_gettext(x,&buf,&n);
  buf[n] = 0;
  return (char *)realloc(buf,n+1);
}

/* Miller said: fix this so that writing to file doesn't buffer everything together. */
/* matju said: make this use vector size doubling as it used to be in binbuf_text */
void binbuf_add(t_binbuf *x, int argc, t_atom *argv) {
    int newsize = x->n + argc;
    t_atom *ap = (t_atom *)realloc(x->v,newsize*sizeof(*x->v));
    x->v = ap;
    ap += x->n;
    for (int i = argc; i--; ap++) *ap = *(argv++);
    x->capa = x->n = newsize;
}

#define MAXADDMESSV 100
void binbuf_addv(t_binbuf *x, const char *fmt, ...) {
    va_list ap;
    t_atom arg[MAXADDMESSV], *at =arg;
    int nargs = 0;
    const char *fp = fmt;
    va_start(ap, fmt);
    while (1) {
        if (nargs >= MAXADDMESSV) {
            error("binbuf_addmessv: only %d allowed", MAXADDMESSV);
            break;
        }
        switch(*fp++) {
        case 'i': SETFLOAT( at, va_arg(ap, int)); break;
        case 'f': SETFLOAT( at, va_arg(ap, double)); break;
        case 's': SETSYMBOL(at, va_arg(ap, t_symbol *)); break;
        case 't': SETSYMBOL(at, gensym(va_arg(ap, char *))); break;
        case ';': SETSEMI(at); break;
        case ',': SETCOMMA(at); break;
	case '$': SETDOLLAR(at, va_arg(ap, int)); break;
	case '&': SETDOLLSYM(at, va_arg(ap, t_symbol *)); break;
        default: goto done;
        }
        at++;
        nargs++;
    }
done:
    va_end(ap);
    binbuf_add(x, nargs, arg);
}

/* add a binbuf to another one for saving.  Semicolons and commas go to
symbols ";", "'",; the symbol ";" goes to "\;", etc. */

void binbuf_addbinbuf(t_binbuf *x, t_binbuf *y) {
    t_binbuf *z = binbuf_new();
    binbuf_add(z, y->n, y->v);
    t_atom *ap = z->v;
    for (size_t i=0; i < z->n; i++, ap++) {
        switch (ap->a_type) {
        case A_FLOAT:   break;
        case A_SEMI:    SETSYMBOL(ap, gensym(";")); break;
        case A_COMMA:   SETSYMBOL(ap, gensym(",")); break;
        case A_DOLLAR:  SETSYMBOL(ap, symprintf("$%ld", ap->a_index)); break;
        case A_DOLLSYM: {
        	ostringstream b;
        	atom_ostream(ap,b);
        	SETSYMBOL(ap, gensym(b.str().data()));} break;
        case A_SYMBOL:
            /* FIXME make this general */
            if      (!strcmp(ap->a_symbol->name, ";")) SETSYMBOL(ap, gensym(";"));
            else if (!strcmp(ap->a_symbol->name, ",")) SETSYMBOL(ap, gensym(","));
            break;
        default:
            //bug("binbuf_addbinbuf: stray atom of type %d",ap->a_type);
            //abort();
            ;
        }
    }
    binbuf_add(x, z->n, z->v);
}

void binbuf_addsemi(t_binbuf *x) {
    t_atom a;
    SETSEMI(&a);
    binbuf_add(x, 1, &a);
}

/* Supply atoms to a binbuf from a message, making the opposite changes
from binbuf_addbinbuf.  The symbol ";" goes to a semicolon, etc. */

void binbuf_restore(t_binbuf *x, int argc, t_atom *argv) {
    int newsize = x->n + argc;
    t_atom *ap = (t_atom *)realloc(x->v,(newsize+1)*sizeof(*x->v));
    if (!ap) {error("binbuf_addmessage: out of space"); return;}
    x->v = ap;
    ap = x->v + x->n;
    for (int i = argc; i--; ap++) {
        if (argv->a_type == A_SYMBOL) {
            char *str = argv->a_symbol->name, *str2;
            if (!strcmp(str, ";")) SETSEMI(ap);
            else if (!strcmp(str, ",")) SETCOMMA(ap);
            else if ((str2 = strchr(str, '$')) && isdigit(str2[1])) {
                int dollsym = 0;
                if (*str != '$') dollsym = 1;
                else for (str2 = str + 1; *str2; str2++) if (!isdigit(*str2)) {
                    dollsym = 1;
                    break;
                }
                if (dollsym) SETDOLLSYM(ap, gensym(str));
                else {
                    int dollar = 0;
                    sscanf(argv->a_symbol->name + 1, "%d", &dollar);
                    SETDOLLAR(ap, dollar);
                }
            } else *ap = *argv;
            argv++;
        } else *ap = *(argv++);
    }
    x->n = newsize;
}

#define MSTACKSIZE 2048

void binbuf_print(t_binbuf *x) {
    int startedpost = 0, newline = 1;
    for (size_t i=0; i < x->n; i++) {
        if (newline) {
            if (startedpost) endpost();
            startpost("%s",""); /* dummy string to fool __attribute__ */
            startedpost = 1;
        }
        postatom(1, x->v + i);
        newline = !! x->v[i].a_type == A_SEMI;
    }
    if (startedpost) endpost();
}

int binbuf_getnatom(t_binbuf *x) {return x->n;}
t_atom *binbuf_getvec(t_binbuf *x) {return x->v;}

int canvas_getdollarzero ();

/* JMZ:
 * s points to the first character after the $
 * (e.g. if the org.symbol is "$1-bla", then s will point to "1-bla")
 * (e.g. org.symbol="hu-$1mu", s="1mu")
 * LATER: think about more complex $args, like ${$1+3}
 *
 * the return value holds the length of the $arg (in most cases: 1)
 * buf holds the expanded $arg
 *
 * if some error occurred, "-1" is returned
 *
 * e.g. "$1-bla" with list "10 20 30"
 * s="1-bla"
 * buf="10"
 * return value = 1; (s+1=="-bla")
 */
static int binbuf_expanddollsym(char *s, std::ostream &buf, t_atom dollar0, int ac, t_atom *av, int tonew) {
  int argno=atol(s);
  int arglen=0;
  char*cs=s;
  char c=*cs;
  while (c && isdigit(c)) {
    c=*cs++;
    arglen++;
  }
  /* invalid $-expansion (like "$bla") */
  if (cs==s) {buf << "$"; return 0;}
  if (argno < 0 || argno > ac) { /* undefined argument */
      if(!tonew) return 0;
      buf << "$" << argno;
  } else if (argno == 0) { /* $0 */
    atom_ostream(&dollar0, buf);
  } else { /* fine! */
    atom_ostream(av+(argno-1), buf);
  }
  return arglen-1;
}

/* LATER remove the dependence on the current canvas for $0; should be another argument. */
t_symbol *binbuf_realizedollsym(t_symbol *s, int ac, t_atom *av, int tonew) {
    ostringstream buf2;
    char *str=s->name;
    t_atom dollarnull;
    SETFLOAT(&dollarnull, canvas_getdollarzero());
    /* JMZ: currently, a symbol is detected to be A_DOLLSYM if it starts with '$'
     * the leading $ is stripped and the rest stored in "s". i would suggest to NOT strip the leading $
     * and make everything a A_DOLLSYM that contains(!) a $ whenever this happened, enable this code */
    char *substr=strchr(str, '$');
    if(!substr) return s;
    oprintf(buf2,"%.*s",substr-str,str);
    str=substr+1;
    for (;;) {
        std::ostringstream buf;
        int next = binbuf_expanddollsym(str, buf, dollarnull, ac, av, tonew);
        if (next<0) break;
    /* JMZ: i am not sure what this means, so i might have broken it. it seems like that if "tonew" is
        set and the $arg cannot be expanded (or the dollarsym is in reality a A_DOLLAR).
        0 is returned from binbuf_realizedollsym; this happens when expanding in a message-box,
        but does not happen when the A_DOLLSYM is the name of a subpatch */
    /* JMZ: this should mimick the original behaviour */
 	if(!tonew && !next && buf.str().size()==0) return 0;
	buf2 << buf.str();
	str+=next;
	substr=strchr(str, '$');
	if(substr) {
	  oprintf(buf2,"%.*s",substr-str,str);
	  str=substr+1;
	} else {
	  buf2 << str;
	  return gensym(buf2.str().data());
	}
    }
    return gensym(buf2.str().data());
}

void binbuf_eval(t_binbuf *x, t_pd *target, int argc, t_atom *argv) {
    static t_atom mstack[MSTACKSIZE], *msp = mstack, *ems = mstack+MSTACKSIZE;
    t_atom *stackwas = msp;
    t_atom *at = x->v;
    int ac = x->n;
    int nargs;
    while (1) {
        t_pd *nexttarget;
        while (!target) {
            t_symbol *s;
            while (ac && (at->a_type == A_SEMI || at->a_type == A_COMMA)) {ac--; at++;}
            if (!ac) break;
            if (at->a_type == A_DOLLAR) {
                if (at->a_index<=0 || at->a_index>argc)    {error("$%ld: not enough arguments supplied",long(at->a_index)); goto cleanup;}
                else if (argv[at->a_index-1].a_type!=A_SYMBOL) {error("$%ld: symbol needed as receiver",long(at->a_index)); goto cleanup;}
                else s = argv[at->a_index-1].a_symbol;
            } else if (at->a_type == A_DOLLSYM) {
                s = binbuf_realizedollsym(at->a_symbol, argc, argv, 0);
                if (!s) {error("$%s: not enough arguments supplied", at->a_symbol->name); goto cleanup;}
            } else s = atom_getsymbol(at);
	    target = s->thing;
	    /* IMPD: allows messages to unbound objects, via pointers */
	    if (!target) {
		if (!sscanf(s->name,".x%lx",(long*)&target)) target=0;
		if (target) {
			if (!object_table->exists(target) || !object_table->get(target)) {
				error("%s target is not a currently valid pointer",s->name);
				return;
			}
		}
	    }
            if (!target) {error("%s: no such object", s->name); goto cleanup;}
            at++;
            ac--;
            break;
            cleanup:
                do {at++; ac--;} while (ac && at->a_type != A_SEMI); /* is this the correct thing to do? */
                continue;
        }
        if (!ac) break;
        nargs = 0;
        nexttarget = target;
        while (1) {
            if (!ac) goto gotmess;
            if (msp >= ems) {error("message too long"); goto broken;}
            switch (at->a_type) {
            /* semis and commas in new message just get bashed to a symbol.  This is needed so you can pass them to "expr." */
            case A_SEMI:  if (target == &pd_objectmaker) {SETSYMBOL(msp, gensym(";")); break;} else {nexttarget = 0; goto gotmess;}
            case A_COMMA: if (target == &pd_objectmaker) {SETSYMBOL(msp, gensym(",")); break;} else                  goto gotmess;
            case A_FLOAT:
            case A_SYMBOL:
                *msp = *at;
                break;
            case A_DOLLAR:
                if (at->a_index > 0 && at->a_index <= argc) *msp = argv[at->a_index-1];
                else if (at->a_index == 0) SETFLOAT(msp, canvas_getdollarzero());
                else {
                    SETFLOAT(msp, 0);
                    if (target != &pd_objectmaker) error("$%ld: argument number out of range",long(at->a_index));
                }
                break;
            case A_DOLLSYM: {
                t_symbol *s9 = binbuf_realizedollsym(at->a_symbol, argc, argv, target == &pd_objectmaker);
                if (!s9) {
                    error("%s: argument number out of range", at->a_symbol->name);
                    SETSYMBOL(msp, at->a_symbol);
                } else SETSYMBOL(msp, s9);
                break;}
            default:
                bug("bad item in binbuf");
                goto broken;
            }
            msp++;
            ac--;
            at++;
            nargs++;
        }
    gotmess:
        if (nargs) {
            switch (stackwas->a_type) {
            case A_SYMBOL: typedmess(target, stackwas->a_symbol, nargs-1, stackwas+1); break;
            case A_FLOAT:  if (nargs == 1) pd_float(target, stackwas->a_float); else pd_list(target, 0, nargs, stackwas); break;
            default: {}
            }
        }
        msp = stackwas;
        if (!ac) break;
        target = nexttarget;
        at++;
        ac--;
    }
    return;
broken:
    msp = stackwas;
}

static int binbuf_doopen(char *s, int mode) {
    char namebuf[strlen(s)+1];
#ifdef MSW
    mode |= O_BINARY;
#endif
    sys_bashfilename(s, namebuf);
    return open(namebuf, mode);
}

static FILE *binbuf_dofopen(const char *s, const char *mode) {
    char namebuf[strlen(s)+1];
    sys_bashfilename(s, namebuf);
    return fopen(namebuf, mode);
}

int binbuf_read(t_binbuf *b, const char *filename, const char *dirname, int flags) {
    long length;
    char *buf;
    char *namebuf=0;
    if (*dirname) asprintf(&namebuf,"%s/%s",dirname,filename);
    else          asprintf(&namebuf,   "%s",        filename);
    int fd = binbuf_doopen(namebuf, 0);
    if (fd < 0) {error("open: %s: %s",namebuf,strerror(errno)); return 1;}
    if ((length = lseek(fd, 0, SEEK_END)) < 0 || lseek(fd, 0, SEEK_SET) < 0 || !(buf = (char *)malloc(length))) {
        error("lseek: %s: %s",namebuf,strerror(errno));
        close(fd); free(namebuf);
        return 1;
    }
    int readret = read(fd, buf, length);
    if (readret < length) {
        error("read (%d %ld) -> %d; %s: %s", fd, length, readret, namebuf, strerror(errno));
        close(fd); free(namebuf); free(buf);
        return 1;
    }
    if (flags&1) for (int i=0; i<length; i++) if (buf[i]=='\n') buf[i] = ';';
    if (flags&2) pd_eval_text(buf,length); else binbuf_text(b, buf, length);
    close(fd); free(namebuf); free(buf);
    return 0;
}

/* read a binbuf from a file, via the search patch of a canvas */
int binbuf_read_via_canvas(t_binbuf *b, const char *filename, t_canvas *canvas, int flags) {
    char *buf, *bufptr; int fd = canvas_open2(canvas, filename, "", &buf, &bufptr, 0);
    if (fd<0) {error("%s: can't open", filename); return 1;}
    close(fd); free(buf);
    return !!binbuf_read(b, bufptr, buf, flags);
}
/* old version */
int binbuf_read_via_path(t_binbuf *b, char const *filename, const char *dirname, int flags) {
    char *buf, *bufptr; int fd = open_via_path2(dirname, filename, "", &buf, &bufptr, 0);
    if (fd<0) {error("%s: can't open", filename); return 1;}
    close(fd);
    bool r = binbuf_read(b, bufptr, buf, flags);
    free(buf);
    return r;
}

#define WBUFSIZE 4096
static t_binbuf *binbuf_convert(t_binbuf *oldb, int maxtopd);

/* write a binbuf to a text file.  If "crflag" is set we suppress semicolons. */
int binbuf_write(t_binbuf *x, const char *filename, const char *dir, int crflag) {
    char sbuf[WBUFSIZE];
    ostringstream fbuf;
    char *bp = sbuf, *ep = sbuf + WBUFSIZE;
    int indx; bool deleteit = 0;
    int ncolumn = 0;
    if (*dir) fbuf << dir << "/";
    fbuf << filename;
    if (!strcmp(filename + strlen(filename) - 4, ".pat")) {
        x = binbuf_convert(x, 0);
        deleteit = 1;
    }
    FILE *f = binbuf_dofopen(fbuf.str().data(), "w");
    if (!f) {error("open: %s: %s",fbuf.str().data(),strerror(errno)); goto fail;}
    indx = x->n;
    for (t_atom *ap = x->v; indx--; ap++) {
        /* estimate how many characters will be needed.  Printing out symbols may need extra characters for inserting backslashes. */
        int length = (ap->a_type == A_SYMBOL || ap->a_type == A_DOLLSYM) ? 80 + strlen(ap->a_symbol->name) : 40;
        if (ep - bp < length) {
            if (fwrite(sbuf, bp-sbuf, 1, f) < 1) {error("write: %s: %s",fbuf.str().data(),strerror(errno)); goto fail;}
            bp = sbuf;
        }
        if ((ap->a_type == A_SEMI || ap->a_type == A_COMMA) && bp > sbuf && bp[-1] == ' ') bp--;
        if (!crflag || ap->a_type != A_SEMI) {
            atom_string(ap, bp, (ep-bp)-2);
            length = strlen(bp);
            bp += length;
            ncolumn += length;
        }
        if (ap->a_type == A_SEMI || (!crflag && ncolumn > 65)) {
            *bp++ = '\n';
            ncolumn = 0;
        } else {
            *bp++ = ' ';
            ncolumn++;
        }
    }
    if (fwrite(sbuf, bp-sbuf, 1, f) < 1) {error("write: %s: %s",fbuf.str().data(),strerror(errno)); goto fail;}
    if (deleteit) binbuf_free(x);
    fclose(f);
    return 0;
fail:
    if (deleteit) binbuf_free(x);
    if (f) fclose(f);
    return 1;
}

/* The following routine attempts to convert from max to pd or back.  The max to pd direction is working OK
   but you will need to make lots of abstractions for objects like "gate" which don't exist in Pd. Conversion
   from Pd to Max hasn't been tested for patches with subpatches yet!  */
#define MAXSTACK 1000
#define ISSYMBOL(a, b) ((a)->a_type == A_SYMBOL && !strcmp((a)->a_symbol->name, (b)))
#define GETF(i) atom_getfloatarg(i,natom,nextmess)
static t_binbuf *binbuf_convert(t_binbuf *oldb, int maxtopd) {
    t_binbuf *newb = binbuf_new();
    t_atom *vec = oldb->v;
    t_int n = oldb->n, nextindex, stackdepth = 0, stack[MAXSTACK], nobj = 0;
    t_atom outmess[MAXSTACK], *nextmess;
    if (!maxtopd) binbuf_addv(newb,"tt;","max","v2");
    for (nextindex = 0; nextindex < n; ) {
        int endmess, natom;
        for (endmess = nextindex; endmess < n && vec[endmess].a_type != A_SEMI; endmess++) {}
        if (endmess == n) break;
        if (endmess == nextindex || endmess == nextindex + 1
          || vec[nextindex].a_type != A_SYMBOL || vec[nextindex+1].a_type != A_SYMBOL) {
            nextindex = endmess + 1;
            continue;
        }
        natom = endmess - nextindex;
        if (natom > MAXSTACK-10) natom = MAXSTACK-10;
        nextmess = vec + nextindex;
        char *first  =  nextmess   ->a_symbol->name;
        char *second = (nextmess+1)->a_symbol->name;
        if (maxtopd) { /* case 1: importing a ".pat" file into Pd. */
            /* dollar signs in file translate to symbols */
            for (int i=0; i<natom; i++) {
                if (nextmess[i].a_type == A_DOLLAR) {
                    SETSYMBOL(nextmess+i, symprintf("$%ld",nextmess[i].a_index));
                } else if (nextmess[i].a_type == A_DOLLSYM) {
                    SETSYMBOL(nextmess+i, gensym(nextmess[i].a_symbol->name));
                }
            }
            if (!strcmp(first, "#N")) {
                if (!strcmp(second, "vpatcher")) {
                    if (stackdepth >= MAXSTACK) {post("too many embedded patches"); return newb;}
                    stack[stackdepth] = nobj;
                    stackdepth++;
                    nobj = 0;
                    binbuf_addv(newb,"ttfffff;","#N","canvas", GETF(2), GETF(3), GETF(4)-GETF(2), GETF(5)-GETF(3), 10.);
                }
            }
            if (!strcmp(first, "#P")) {
                /* drop initial "hidden" flag */
                if (!strcmp(second, "hidden")) {
                    nextmess++;
                    natom--;
                    second = (nextmess+1)->a_symbol->name;
                }
                if (natom >= 7 && !strcmp(second, "newobj")
                  && (ISSYMBOL(&nextmess[6], "patcher") || ISSYMBOL(&nextmess[6], "p"))) {
                    binbuf_addv(newb,"ttffts;","#X","restore", GETF(2), GETF(3),
                        "pd", atom_getsymbolarg(7, natom, nextmess));
                    if (stackdepth) stackdepth--;
                    nobj = stack[stackdepth];
                    nobj++;
                } else if (!strcmp(second, "newex") || !strcmp(second, "newobj")) {
                    t_symbol *classname = atom_getsymbolarg(6, natom, nextmess);
                    if (classname == gensym("trigger") || classname == gensym("t")) {
                        for (int i=7; i<natom; i++)
                            if (nextmess[i].a_type == A_SYMBOL && nextmess[i].a_symbol == gensym("i"))
                                    nextmess[i].a_symbol = gensym("f");
                    }
                    if (classname == gensym("table")) classname = gensym("TABLE");
                    SETSYMBOL(outmess, gensym("#X"));
                    SETSYMBOL(outmess + 1, gensym("obj"));
                    outmess[2] = nextmess[2];
                    outmess[3] = nextmess[3];
                    SETSYMBOL(outmess+4, classname);
                    for (int i=7; i<natom; i++) outmess[i-2] = nextmess[i];
                    SETSEMI(outmess + natom - 2);
                    binbuf_add(newb, natom - 1, outmess);
                    nobj++;
                } else if (!strcmp(second, "message") || !strcmp(second, "comment")) {
                    SETSYMBOL(outmess, gensym("#X"));
                    SETSYMBOL(outmess + 1, gensym((char *)(strcmp(second, "message") ? "text" : "msg")));
                    outmess[2] = nextmess[2];
                    outmess[3] = nextmess[3];
                    for (int i=6; i<natom; i++) outmess[i-2] = nextmess[i];
                    SETSEMI(outmess + natom - 2);
                    binbuf_add(newb, natom - 1, outmess);
                    nobj++;
                } else if (!strcmp(second, "button")) {
                    binbuf_addv(newb,"ttfft;","#X","obj",GETF(2),GETF(3),"bng");
                    nobj++;
                } else if (!strcmp(second, "number") || !strcmp(second, "flonum")) {
                    binbuf_addv(newb,"ttff;","#X","floatatom",GETF(2),GETF(3));
                    nobj++;
                } else if (!strcmp(second, "slider")) {
                    float inc = GETF(7);
                    if (inc <= 0) inc = 1;
                    binbuf_addv(newb, "ttfftfffffftttfffffffff;","#X","obj",
                        GETF(2), GETF(3), "vsl", GETF(4), GETF(5), GETF(6), GETF(6)+(GETF(5)-1)*inc,
                        0., 0., "empty", "empty", "empty", 0., -8., 0., 8., -262144., -1., -1., 0., 1.);
                    nobj++;
                } else if (!strcmp(second, "toggle")) {
                    binbuf_addv(newb,"ttfft;","#X","obj",GETF(2),GETF(3),"tgl");
                    nobj++;
                } else if (!strcmp(second, "inlet")) {
                    binbuf_addv(newb,"ttfft;","#X","obj",GETF(2),GETF(3), natom > 5 ? "inlet~" : "inlet");
                    nobj++;
                } else if (!strcmp(second, "outlet")) {
                    binbuf_addv(newb,"ttfft;","#X","obj",GETF(2),GETF(3), natom > 5 ? "outlet~" : "outlet");
                    nobj++;
                } else if (!strcmp(second, "user")) {
                    binbuf_addv(newb,"ttffs;","#X","obj", GETF(3), GETF(4), atom_getsymbolarg(2, natom, nextmess));
                    nobj++;
                } else if (!strcmp(second, "connect") || !strcmp(second, "fasten")) {
                    binbuf_addv(newb,"ttffff;","#X","connect", nobj-GETF(2)-1, GETF(3), nobj-GETF(4)-1, GETF(5));
                }
            }
        } else { /* Pd to Max */
            if (!strcmp(first, "#N")) {
                if (!strcmp(second, "canvas")) {
                    if (stackdepth >= MAXSTACK) {
                        post("too many embedded patches");
                        return newb;
                    }
                    stack[stackdepth] = nobj;
                    stackdepth++;
                    nobj = 0;
                    binbuf_addv(newb,"ttffff;","#N","vpatcher", GETF(2), GETF(3), GETF(4), GETF(5));
                }
            }
            if (!strcmp(first, "#X")) {
                if (natom >= 5 && !strcmp(second, "restore") && (ISSYMBOL (&nextmess[4], "pd"))) {
                    binbuf_addv(newb,"tt;","#P","pop");
                    binbuf_addv(newb,"ttffffts;","#P","newobj", GETF(2), GETF(3), 50., 1.,
                        "patcher", atom_getsymbolarg(5, natom, nextmess));
                    if (stackdepth) stackdepth--;
                    nobj = stack[stackdepth];
                    nobj++;
                } else if (!strcmp(second, "obj")) {
                    t_symbol *classname = atom_getsymbolarg(4, natom, nextmess);
                    if      (classname == gensym("inlet"))    binbuf_addv(newb,"ttfff;","#P","inlet", GETF(2), GETF(3), 15.);
                    else if (classname == gensym("inlet~"))   binbuf_addv(newb,"ttffff;","#P","inlet", GETF(2), GETF(3), 15., 1.);
                    else if (classname == gensym("outlet"))   binbuf_addv(newb,"ttfff;","#P","outlet", GETF(2), GETF(3), 15.);
                    else if (classname == gensym("outlet~"))  binbuf_addv(newb,"ttffff;","#P","outlet", GETF(2), GETF(3), 15., 1.);
                    else if (classname == gensym("bng"))      binbuf_addv(newb,"ttffff;","#P","button", GETF(2), GETF(3), GETF(5), 0.);
                    else if (classname == gensym("tgl"))      binbuf_addv(newb,"ttffff;","#P","toggle", GETF(2), GETF(3), GETF(5), 0.);
                    else if (classname == gensym("vsl"))      binbuf_addv(newb,"ttffffff;","#P","slider",
                    	GETF(2), GETF(3), GETF(5), GETF(6), (GETF(8)-GETF(7)) / (GETF(6)==1?1:GETF(6)-1), GETF(7));
                    else {
                    	binbuf_addv(newb,"ttffff","#P","newex", GETF(2), GETF(3), 50., 1.);
                        for (int i=4; i<natom; i++) outmess[i-4] = nextmess[i];
                        binbuf_add(newb, natom-4, outmess);
                        binbuf_addv(newb,";");
                    }
                    nobj++;
                } else if (!strcmp(second, "msg") || !strcmp(second, "text")) {
                    binbuf_addv(newb,"ttffff","#P",strcmp(second, "msg") ? "comment" : "message",GETF(2),GETF(3),50.,1.);
                    for (int i=4; i<natom; i++) outmess[i-4] = nextmess[i];
                    binbuf_add(newb, natom-4, outmess);
                    binbuf_addv(newb,";");
                    nobj++;
                } else if (!strcmp(second, "floatatom")) {
                    binbuf_addv(newb, "ttfff;", "#P", "flonum", GETF(2), GETF(3), 35);
                    nobj++;
                } else if (!strcmp(second, "connect")) {
                    binbuf_addv(newb, "ttffff;", "#P", "connect", nobj-GETF(2)-1, GETF(3), nobj-GETF(4)-1, GETF(5));
                }
            }
        }
        nextindex = endmess + 1;
    }
    if (!maxtopd) binbuf_addv(newb, "tt;", "#P", "pop");
#if 0
    binbuf_write(newb, "import-result.pd", "/tmp", 0);
#endif
    return newb;
}

/* function to support searching */
int binbuf_match(t_binbuf *inbuf, t_binbuf *searchbuf) {
    for (size_t indexin = 0; indexin <= inbuf->n - searchbuf->n; indexin++) {
        for (size_t nmatched = 0; nmatched < searchbuf->n; nmatched++) {
            t_atom *a1 = &inbuf->v[indexin + nmatched], *a2 = &searchbuf->v[nmatched];
            if (a1->a_type != a2->a_type ||
                (a1->a_type == A_SYMBOL  && a1->a_symbol != a2->a_symbol) ||
                (a1->a_type == A_FLOAT   && a1->a_float  != a2->a_float ) ||
                (a1->a_type == A_DOLLAR  && a1->a_index  != a2->a_index ) ||
                (a1->a_type == A_DOLLSYM && a1->a_symbol != a2->a_symbol)) goto nomatch;
        }
        return 1;
    nomatch: ;
    }
    return 0;
}

/* LATER figure out how to log errors */
void binbuf_evalfile(t_symbol *name, t_symbol *dir) {
    t_binbuf *b = binbuf_new();
    int import = !strcmp(name->name + strlen(name->name) - 4, ".pat");
    /* set filename so that new canvases can pick them up */
    int dspstate = canvas_suspend_dsp();
    glob_setfilename(0, name, dir);
    if (import) {
	if (binbuf_read(b, name->name, dir->name, 0)) {perror(name->name); goto bye;}
	t_binbuf *newb = binbuf_convert(b, 1);
	binbuf_free(b);
	b = newb;
    } else {
	if (binbuf_read(b, name->name, dir->name, 2)) perror(name->name);
    }
bye:
    glob_setfilename(0, &s_, &s_);      /* bug fix by Krzysztof Czaja */
    binbuf_free(b);
    canvas_resume_dsp(dspstate);
}

void glob_evalfile(t_pd *ignore, t_symbol *name, t_symbol *dir) {
    /* even though binbuf_evalfile appears to take care of dspstate, we have to do it again here, because
       canvas_startdsp() assumes that all toplevel canvases are visible. LATER: check if this is still necessary (probably not) */
    int dspstate = canvas_suspend_dsp();
    binbuf_evalfile(name, dir);
    t_pd *x = 0;
    while ((x != s__X.thing) && (x = s__X.thing)) vmess(x, gensym("pop"), "i", 1);
    if (lastpopped) pd_vmess(lastpopped, gensym("loadbang"), "");
    lastpopped = 0;
    canvas_resume_dsp(dspstate);
}

//copied from m_pd.h
#define class_new2(NAME,NU,FREE,SIZE,FLAGS,SIG) class_new2(NAME,(t_newmethod)NU,(t_method)FREE,SIZE,FLAGS,SIG)

extern "C" {
void conf_init();
void glob_init();
void boxes_init();
void garray_init();
void pd_init() {
    object_table = new t_hash<t_pd *,long>(127);
    bindlist_class = class_new(gensym("bindlist"), 0, 0, sizeof(t_bindlist), CLASS_PD, 0);
    class_addbang(bindlist_class, (t_method)bindlist_bang);
    class_addfloat(bindlist_class, (t_method)bindlist_float);
    class_addsymbol(bindlist_class, (t_method)bindlist_symbol);
    class_addpointer(bindlist_class, (t_method)bindlist_pointer);
    class_addlist(bindlist_class, (t_method)bindlist_list);
    class_addanything(bindlist_class, (t_method)bindlist_anything);
    binbuf_class = class_new2("__list", binbuf_new, binbuf_free2, sizeof(t_binbuf), CLASS_PD,   "*");
    wire_class   = class_new2("__wire",   wire_new,   wire_free,  sizeof(t_wire),   CLASS_GOBJ, "*");
    class_setsavefn(wire_class,(t_savefn)wire_save);
    if (pd_objectmaker._class) bug("ARGH");
    for (size_t i=0; i<sizeof(symlist)/sizeof(*symlist); i++) {
        symlist[i]->n = strlen(symlist[i]->name);
        dogensym(symlist[i]->name, symlist[i]->n, symlist[i]); /* why does this take three args? */
    }
    pd_objectmaker._class = class_new2("objectmaker", 0, 0, sizeof(t_pd), CLASS_DEFAULT, "");
    pd_canvasmaker._class = class_new2("canvasmaker", 0, 0, sizeof(t_pd), CLASS_DEFAULT, "");
    pd_bind(&pd_canvasmaker, &s__N);
    class_addanything(pd_objectmaker._class, (t_method)new_anything);
    obj_init();
    conf_init();
    glob_init();
    boxes_init();
    garray_init();
}
};

#ifndef HAVE_ASPRINTF
#define HAVE_ASPRINTF
#undef asprintf
#undef vasprintf
int asprintf(char **str, const char *fmt, ...) throw () {
        va_list ap;
        int ret;
        *str = NULL;
        va_start(ap, fmt);
        ret = vasprintf(str, fmt, ap);
        va_end(ap);
        return ret;
}
#endif /* HAVE_ASPRINTF */
#ifndef HAVE_VASPRINTF
#define HAVE_VASPRINTF
#include <stdio.h>
#include <errno.h>
#include <limits.h>
#include <stdarg.h>
#include <stdlib.h>

#ifndef VA_COPY
# ifdef HAVE_VA_COPY
#  define VA_COPY(dest, src) va_copy(dest, src)
# else
#  ifdef HAVE___VA_COPY
#   define VA_COPY(dest, src) __va_copy(dest, src)
#  else
#   define VA_COPY(dest, src) (dest) = (src)
#  endif
# endif
#endif

#define INIT_SZ 128

int vasprintf(char **str, const char *fmt, va_list ap) throw () {
        int ret = -1;
        va_list ap2;
        char *string, *newstr;
        size_t len;
        VA_COPY(ap2, ap);
        if ((string = (char *)malloc(INIT_SZ)) == NULL)
                goto fail;
        ret = vsnprintf(string, INIT_SZ, fmt, ap2);
        if (ret >= 0 && ret < INIT_SZ) { /* succeeded with initial alloc */
                *str = string;
        } else if (ret == INT_MAX || ret < 0) { /* Bad length */
                goto fail;
        } else {        /* bigger than initial, realloc allowing for nul */
                len = (size_t)ret + 1;
                if ((newstr = (char *)realloc(string, len)) == NULL) {
                        free(string);
                        goto fail;
                } else {
                        va_end(ap2);
                        VA_COPY(ap2, ap);
                        ret = vsnprintf(newstr, len, fmt, ap2);
                        if (ret >= 0 && (size_t)ret < len) {
                                *str = newstr;
                        } else { /* failed with realloc'ed string, give up */
                                free(newstr);
                                goto fail;
                        }
                }
        }
        va_end(ap2);
        return ret;
fail:
        *str = NULL;
        errno = ENOMEM;
        va_end(ap2);
        return -1;
}
#endif /* HAVE_VASPRINTF */