forked from Unidata/netcdf-c
/
jdatajni.c
519 lines (464 loc) · 14.4 KB
/
jdatajni.c
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
#include "includes.h"
#include "ncoffsets.h"
#ifdef ENABLE_JAVA
extern List* vlenconstants; /* List<Constant*>;*/
/* Forward*/
static void genjjni_primdata(Symbol*, Datasrc*, Datalist*, char*, Bytebuffer*);
static void genjjni_data(Symbol* sym, Datasrc*, Datalist*, char*, Bytebuffer*);
static void genjjni_fieldarray(Symbol*, Datasrc*, Dimset*, int, char*, Bytebuffer*);
static void genjjni_arraydatar(Symbol* basetype,
Datasrc* src,
Odometer* odom,
Putvar* closure,
int index,
int checkpoint,
Bytebuffer* code);
static void jopaquestring(Symbol* tsym, Constant* prim, Constant* target);
static int genjjni_putmemory(struct Symbol*, char*, Bytebuffer*, Bytebuffer*);
static int jalignment(Symbol* tsym);
static int jvlenalignment(void);
/**************************************************/
/* Code for generating Java language data lists*/
/**************************************************/
/* Datalist rules: see the rules on the man page */
/* Specialty wrappers for genjjni_data */
void
genjjni_attrdata(Symbol* asym, Bytebuffer* databuf)
{
Datasrc* src;
int typecode = asym->typ.basetype->typ.typecode;
char* memname = "memory";
if(asym->data == NULL) return;
if(typecode == NC_CHAR) {
gen_charattr(asym,databuf);
} else {
src = datalist2src(asym->data);
while(srcmore(src)) {
genjjni_data(asym->typ.basetype,src,NULL,memname,databuf);
}
}
}
void
genjjni_scalardata(Symbol* vsym, Bytebuffer* databuf)
{
Datasrc* src;
char* memname = "memory";
if(vsym->data == NULL) return;
src = datalist2src(vsym->data);
genjjni_data(vsym->typ.basetype,src,
vsym->var.special._Fillvalue,memname,databuf);
if(srcmore(src)) {
semerror(srcline(src),"Extra data at end of datalist");
}
}
void
genjjni_fillvalue(Symbol* tsym, Datalist* fillsrc, Datasrc* src,
char* memname, Bytebuffer* databuf)
{
Datalist* list = NULL;
ASSERT(tsym->objectclass == NC_TYPE);
list = fillsrc;
if(list == NULL) list = getfiller(tsym);
srcpushlist(src,list);
genjjni_data(tsym,src,NULL,memname,databuf);
srcpop(src);
}
void
genjjni_arraydata(Symbol* vsym, Putvar* closure, Bytebuffer* databuf)
{
Datasrc* src;
Datalist* list;
int i,checkpoint;
nc_type typecode = vsym->typ.basetype->typ.typecode;
if(vsym->data == NULL) return;
list = vsym->data;
ASSERT(list->dimdata != NULL);
src = datalist2src(list);
/* Locate checkpoint */
checkpoint=0;
for(i=0;i<vsym->typ.dimset.ndims;i++) {
if(vsym->typ.dimset.dimsyms[i]->dim.size == NC_UNLIMITED) {
checkpoint = i;
break;
}
}
if(typecode == NC_CHAR)
gen_chararray(vsym,closure,databuf);
else {
genjjni_arraydatar(vsym,src,list->dimdata,closure,0,checkpoint,databuf);
}
commify(databuf);
}
static void
genjjni_arraydatar(Symbol* vsym,
Datasrc* src,
Odometer* odom,
Putvar* closure,
int index,
int checkpoint,
Bytebuffer* databuf)
{
int i;
int rank = odom->rank;
int lastdim = (index == (rank - 1)); /* last dimension*/
int firstdim = (index == 0);
int docheckpoint = (closure != NULL && index == checkpoint);
int declsize = odom->dims[index].declsize;
int isunlimited = (declsize == 0);
Symbol* basetype = vsym->typ.basetype;
Datalist* fillsrc = vsym->var.special._Fillvalue;
Constant* con;
nc_type typecode = basetype->typ.typecode;
char* memname = "memory";
ASSERT(index >= 0 && index < rank);
odom->dims[index].index = 0; /* reset*/
if(isunlimited) {
Constant* con;
if(!firstdim) {
if(!issublist(src)) {
semerror(srcline(src),"Unlimited data must be enclosed in {..}");
return;
}
srcpush(src); /* enter the unlimited data */
}
while((con=srcpeek(src))!=NULL) {
if(lastdim) {
if(isprimplus(typecode)) {
bbCat(databuf," ");
genjjni_primdata(basetype,src,fillsrc,memname,databuf);
} else
genjjni_data(basetype,src,fillsrc,memname,databuf);
} else {
genjjni_arraydatar(vsym,src,odom,closure,index+1,
checkpoint,databuf);
}
odom->dims[index].index++;
if(docheckpoint) {
closure->putvar(closure,odom,databuf);
}
}
odom->dims[index].datasize = odom->dims[index].index;
if(!firstdim) srcpop(src);
} else { /* !isunlimited*/
for(i=0;i<declsize;i++) {
con = srcpeek(src);
if(lastdim) {
if(isprimplus(typecode)) {
bbCat(databuf," ");
genjjni_primdata(basetype,src,fillsrc,memname,databuf);
} else
genjjni_data(basetype,src,fillsrc,memname,databuf);
} else { /* ! lastdim*/
(void)genjjni_arraydatar(vsym,src,odom,closure,
index+1,checkpoint,
databuf);
}
odom->dims[index].index++;
if(docheckpoint) {
closure->putvar(closure,odom,databuf);
}
}
}
}
/**************************************************/
/* This is the general datalist processing procedure */
static void
genjjni_data(Symbol* tsym, Datasrc* datasrc, Datalist* fillsrc,
char* memname, Bytebuffer* databuf)
{
int usecmpd;
Constant* con = srcpeek(datasrc);
Bytebuffer* constdata = NULL;
nc_type typecode = tsym->typ.typecode;
if(con == NULL || con->nctype == NC_FILLVALUE) {
srcnext(datasrc);
genjjni_fillvalue(tsym,fillsrc,datasrc,memname,databuf);
return;
}
switch (tsym->subclass) {
case NC_ENUM:
case NC_OPAQUE:
case NC_PRIM:
if(issublist(datasrc)) {
semerror(srcline(datasrc),"Expected primitive found {..}");
}
bbCat(databuf," ");
genjjni_primdata(tsym,datasrc,NULL,memname,databuf);
break;
case NC_COMPOUND: {
int i;
if(!issublist(datasrc)) {
semerror(srcline(datasrc),
"Compound data must be enclosed in {..}");
}
srcpush(datasrc);
for(i=0;i<listlength(tsym->subnodes);i++) {
Symbol* field = (Symbol*)listget(tsym->subnodes,i);
genjjni_data(field,datasrc,fillsrc,memname,databuf);
}
srcpop(datasrc);
} break;
case NC_VLEN: {
char stmt[C_MAX_STMT];
Constant* cp;
char vlenname[1024];
if(!issublist(datasrc)) {
semerror(srcline(datasrc),"Vlen data must be enclosed in {..}");
}
cp = srcnext(datasrc);
sprintf(vlenname,"vlen_%u",cp->value.compoundv->vlen.uid);
/* Use special alignment */
nprintf(stmt,sizeof(stmt),"Memory.align(%s,%d);\n",
vlenname,jvlenalignment());
bbCat(databuf,stmt);
/* generate and store the nc_vlen_t instance*/
sprintf(stmt,"Memory.put_vlen(%s,new long[]{%lld, %s_addr});\n",
memname,
(long long)cp->value.compoundv->vlen.count,
vlenname);
bbCat(databuf,stmt);
} break;
case NC_FIELD:
/* enclose in braces if and only if field is an array */
usecmpd = (issublist(datasrc) && tsym->typ.dimset.ndims > 0);
if(usecmpd) srcpush(datasrc);
constdata = bbNew();
if(tsym->typ.dimset.ndims > 0) {
genjjni_fieldarray(tsym->typ.basetype,datasrc,&tsym->typ.dimset,0,
memname,constdata);
} else {
genjjni_data(tsym->typ.basetype,datasrc,NULL,memname,constdata);
}
/* If this was a primitive valued field, then generate a
Memory.put_XXX call
*/
if(isprimplus(typecode)) {
genjjni_putmemory(tsym,memname,databuf,constdata);
} else /* It is already one or more Memory.put_XX calls */
bbAppendn(databuf,bbContents(constdata),bbLength(constdata));
if(usecmpd) srcpop(datasrc);
bbFree(constdata);
bbNull(databuf);
break;
default: PANIC1("genjjni_data: unexpected subclass %d",tsym->subclass);
}
}
/* Used only for structure field arrays*/
static void
genjjni_fieldarray(Symbol* basetype, Datasrc* src, Dimset* dimset, int index,
char* memname, Bytebuffer* databuf)
{
int i;
Symbol* dim = dimset->dimsyms[index];
unsigned int size = dim->dim.size;
int lastdim = (index == (dimset->ndims - 1)); /* last dimension*/
int typecode = basetype->typ.typecode;
if(typecode == NC_CHAR) {
/* Collect the char field in a separate buffer */
Bytebuffer* fieldbuf = bbNew();
gen_charfield(src,dimset,index,fieldbuf);
/* Add to the existing data buf using Memory */
jquotestring(fieldbuf,'"');
bbCat(databuf," ");
bbCat(databuf,bbContents(fieldbuf));
bbFree(fieldbuf);
} else {
ASSERT(size != 0);
for(i=0;i<size;i++) {
bbCat(databuf," ");
if(lastdim) {
if(isprimplus(typecode)) {
bbCat(databuf," ");
genjjni_primdata(basetype,src,NULL,memname,databuf);
} else
genjjni_data(basetype,src,NULL,memname,databuf);
} else { /* !lastdim*/
genjjni_fieldarray(basetype,src,dimset,index+1,memname,databuf);
}
}
}
}
void
genjjni_vlendata(List* vlenconstants, Bytebuffer* databuf)
{
int i,count;
Datasrc* vlensrc;
char tmp[C_MAX_STMT];
char memname[1024];
Bytebuffer* vlenbuf = bbNew();
for(i=0;i<listlength(vlenconstants);i++) {
Constant* cmpd = (Constant*)listget(vlenconstants,i);
Symbol* tsym = cmpd->value.compoundv->vlen.schema;
Symbol* basetype = tsym->typ.basetype;
int typecode = basetype->typ.typecode;
sprintf(memname,"vlen_%u",cmpd->value.compoundv->vlen.uid);
count = 0;
vlensrc = datalist2src(cmpd->value.compoundv);
bbClear(vlenbuf);
if(typecode == NC_CHAR) {
/* Collect the char vlen in a separate buffer */
gen_charvlen(vlensrc,vlenbuf);
count = bbLength(vlenbuf);
/* Add to the existing data buf as a single constant */
jquotestring(vlenbuf,'"');
/* Insert into the Memory buffer */
genjjni_putmemory(basetype,memname,databuf,vlenbuf);
} else {
while(srcmore(vlensrc)) {
genjjni_data(tsym->typ.basetype,vlensrc,NULL,memname,vlenbuf);
count++;
}
ASSERT(count == cmpd->value.compoundv->vlen.count);
/* Hack to handle user-defined vs primitive basetypes */
if(isprimplus(typecode)) {
genjjni_putmemory(basetype,memname,databuf,vlenbuf);
} else { /* constdata should have the necessary Memory.put ops */
bbCat(databuf,bbContents(vlenbuf));
}
/* Now store the address */
sprintf(tmp,"%s_addr = Memory.address(%s);\n",
memname,memname);
bbCat(databuf,tmp);
}
}
bbFree(vlenbuf);
}
void
genjjni_vlenconstants(List* vlenconstants, Bytebuffer* databuf)
{
int i;
char tmp[C_MAX_STMT];
char memname[1024];
for(i=0;i<listlength(vlenconstants);i++) {
Constant* cmpd = (Constant*)listget(vlenconstants,i);
sprintf(memname,"vlen_%u",cmpd->value.compoundv->vlen.uid);
/* Define the memory buffer and a place to stick its address */
sprintf(tmp,"static long %s = Memory.create();\n",memname);
bbCat(databuf,tmp);
sprintf(tmp,"static long %s_addr = 0L;\n",memname);
bbCat(databuf,tmp);
}
}
/**************************************************/
static void
genjjni_primdata(Symbol* tsym, Datasrc* src, Datalist* filler,
char* memname, Bytebuffer* databuf)
{
Constant target, *prim;
prim = srcnext(src);
if(prim == NULL || prim->nctype == NC_FILLVALUE) {
genjjni_fillvalue(tsym,filler,src,memname,databuf);
return;
}
target.nctype = tsym->typ.typecode;
if(prim == NULL) {
#ifdef GENFILL
/* generate a fill value*/
nc_getfill(&target);
/* fall thru*/
#else
return;
#endif
}
ASSERT(prim->nctype != NC_COMPOUND);
switch (target.nctype) {
case NC_ECONST:
if(tsym->subclass != NC_ENUM) {
semerror(prim->lineno,"Conversion to enum not supported (yet)");
nc_getfill(&target);
} else {
target.nctype = NC_ECONST;
convert1(prim,&target);
}
break;
case NC_OPAQUE:
target.nctype = NC_STRING;
jopaquestring(tsym,prim,&target);
break;
case NC_CHAR:
/* Hack to handle the char case as a string */
target = cloneconstant(prim);
break;
default:
convert1(prim,&target);
break;
}
/* add hack for java bug in converting floats */
if(target.nctype == NC_FLOAT) bbCat(databuf," (float)");
bbCat(databuf,jconst(&target));
}
/* Convert an opaque to a java string */
static void
jopaquestring(Symbol* tsym, Constant* prim, Constant* target)
{
int i;
static char hexdigits[] = "0123456789ABCDEF";
char* op = prim->value.opaquev.stringv;
size_t oplen = prim->value.opaquev.len;
unsigned char* p;
char* opstring;
ASSERT((oplen%2) == 0);
opstring = (char*)ecalloc(oplen*(2+4));
opstring[0]='\0';
p=(unsigned char*)op;
for(i=0;i<oplen;i++,p++) {
char tmp[8];
unsigned int b = *p;
char digit1 = hexdigits[(b & 0x0f)];
char digit2 = hexdigits[((b>>4) & 0x0f)];
strcpy(tmp,"\\u00");
tmp[5] = digit2;
tmp[6] = digit1;
tmp[7] = '\0';
strcat(opstring,tmp);
}
target->value.stringv.stringv = opstring;
target->value.stringv.len = strlen(opstring);
}
static int
jalignment(Symbol* tsym)
{
nc_type nctype = tsym->typ.typecode;
int alignment = 0;
if(nctype == NC_ECONST)
alignment = nctypealignment(tsym->typ.typecode);
else if(usingclassic && nctype == NC_STRING)
alignment = nctypealignment(NC_CHAR);
else if(nctype == NC_CHAR)
alignment = nctypealignment(NC_CHAR);
else
alignment = nctypealignment(nctype);
return alignment;
}
static int
genjjni_putmemory(Symbol* tsym, char* memname, Bytebuffer* databuf, Bytebuffer* constbuf)
{
char stmt[1024];
nc_type typecode = tsym->typ.typecode;
commify(constbuf);
nprintf(stmt,sizeof(stmt),"Memory.align(%s,%d);\n",
memname,jalignment(tsym));
bbCat(databuf,stmt);
if(typecode == NC_CHAR) {
nprintf(stmt,sizeof(stmt),"Memory.put_%sarray(%s,",
jstype(typecode),memname);
bbCat(databuf,stmt);
bbAppendn(databuf,bbContents(constbuf),bbLength(constbuf));
bbCat(databuf,");\n");
} else {
nprintf(stmt,sizeof(stmt),"Memory.put_%sarray(%s,new %s[]{",
jstype(typecode),
memname,
jarraytype(typecode));
bbCat(databuf,stmt);
bbAppendn(databuf,bbContents(constbuf),bbLength(constbuf));
bbCat(databuf,"});\n");
}
return NC_NOERR;
}
static int
jvlenalignment(void)
{
return nctypealignment(NC_VLEN);
}
#endif /*ENABLE_JAVA*/