forked from Unidata/netcdf-c
-
Notifications
You must be signed in to change notification settings - Fork 0
/
ncgen.y
1494 lines (1350 loc) · 41.5 KB
/
ncgen.y
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
/*********************************************************************
* Copyright 1993, UCAR/Unidata
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
* $Id: ncgen.y,v 1.42 2010/05/18 21:32:46 dmh Exp $
*********************************************************************/
/* yacc source for "ncgen", a netCDL parser and netCDF generator */
%error-verbose
%{
/*
static char SccsId[] = "$Id: ncgen.y,v 1.42 2010/05/18 21:32:46 dmh Exp $";
*/
#include "includes.h"
#include "offsets.h"
#include "ncgeny.h"
#include "ncgen.h"
/* Following are in ncdump (for now)*/
/* Need some (unused) definitions to get it to compile */
#define ncatt_t void*
#define ncvar_t void
#include "nctime.h"
/* parser controls */
#define YY_NO_INPUT 1
/* True if string a equals string b*/
#define STREQ(a, b) (*(a) == *(b) && strcmp((a), (b)) == 0)
#define VLENSIZE (sizeof(nc_vlen_t))
#define MAXFLOATDIM 4294967295.0
/* mnemonic */
typedef enum Attrkind {ATTRVAR, ATTRGLOBAL, DONTKNOW} Attrkind;
typedef nc_vlen_t vlen_t;
/* We retain the old representation of the symbol list
as a linked list.
*/
Symbol* symlist;
/* Track rootgroup separately*/
Symbol* rootgroup;
/* Track the group sequence */
static List* groupstack;
/* Provide a separate sequence for accumulating values
during the parse.
*/
static List* stack;
/* track homogeneity of types for data lists*/
static nc_type consttype;
/* Misc. */
static int stackbase;
static int stacklen;
static int count;
static int opaqueid; /* counter for opaque constants*/
static int arrayuid; /* counter for pseudo-array types*/
char* primtypenames[PRIMNO] = {
"nat",
"byte", "char", "short",
"int", "float", "double",
"ubyte", "ushort", "uint",
"int64", "uint64",
"string"
};
static int GLOBAL_SPECIAL = _NCPROPS_FLAG | _ISNETCDF4_FLAG | _SUPERBLOCK_FLAG | _FORMAT_FLAG ;
/*Defined in ncgen.l*/
extern int lineno; /* line number for error messages */
extern Bytebuffer* lextext; /* name or string with escapes removed */
extern double double_val; /* last double value read */
extern float float_val; /* last float value read */
extern long long int64_val; /* last int64 value read */
extern int int32_val; /* last int32 value read */
extern short int16_val; /* last short value read */
extern unsigned long long uint64_val; /* last int64 value read */
extern unsigned int uint32_val; /* last int32 value read */
extern unsigned short uint16_val; /* last short value read */
extern char char_val; /* last char value read */
extern signed char byte_val; /* last byte value read */
extern unsigned char ubyte_val; /* last byte value read */
/* Track definitions of dims, types, attributes, and vars*/
List* grpdefs;
List* dimdefs;
List* attdefs; /* variable-specific attributes*/
List* gattdefs; /* global attributes only*/
List* xattdefs; /* unknown attributes*/
List* typdefs;
List* vardefs;
List* condefs; /* non-dimension constants used in type defs*/
List* tmp;
/* Forward */
static NCConstant makeconstdata(nc_type);
static NCConstant evaluate(Symbol* fcn, Datalist* arglist);
static NCConstant makeenumconstref(Symbol*);
static void addtogroup(Symbol*);
static Symbol* currentgroup(void);
static Symbol* createrootgroup(const char*);
static Symbol* creategroup(Symbol*);
static int dupobjectcheck(nc_class,Symbol*);
static void setpathcurrent(Symbol* sym);
static Symbol* makeattribute(Symbol*,Symbol*,Symbol*,Datalist*,Attrkind);
static Symbol* makeprimitivetype(nc_type i);
static Symbol* makespecial(int tag, Symbol* vsym, Symbol* tsym, void* data, int isconst);
static int containsfills(Datalist* list);
static void datalistextend(Datalist* dl, NCConstant* con);
static void vercheck(int ncid);
static long long extractint(NCConstant con);
int yylex(void);
#ifndef NO_STDARG
static void yyerror(const char *fmt, ...);
#else
static void yyerror(fmt,va_alist) const char* fmt; va_dcl;
#endif
/* Extern */
extern int lex_init(void);
%}
/* DECLARATIONS */
%union {
Symbol* sym;
unsigned long size; /* allow for zero size to indicate e.g. UNLIMITED*/
long mark; /* track indices into the sequence*/
int nctype; /* for tracking attribute list type*/
Datalist* datalist;
NCConstant constant;
}
%token <sym>
NC_UNLIMITED_K /* keyword for unbounded record dimension */
CHAR_K /* keyword for char datatype */
BYTE_K /* keyword for byte datatype */
SHORT_K /* keyword for short datatype */
INT_K /* keyword for int datatype */
FLOAT_K /* keyword for float datatype */
DOUBLE_K /* keyword for double datatype */
UBYTE_K /* keyword for unsigned byte datatype */
USHORT_K /* keyword for unsigned short datatype */
UINT_K /* keyword for unsigned int datatype */
INT64_K /* keyword for long long datatype */
UINT64_K /* keyword for unsigned long long datatype */
IDENT /* name for a dimension, variable, or attribute */
TERMSTRING /* terminal string */
CHAR_CONST /* char constant (not ever generated by ncgen.l) */
BYTE_CONST /* byte constant */
SHORT_CONST /* short constant */
INT_CONST /* int constant */
INT64_CONST /* long long constant */
UBYTE_CONST /* unsigned byte constant */
USHORT_CONST /* unsigned short constant */
UINT_CONST /* unsigned int constant */
UINT64_CONST /* unsigned long long constant */
FLOAT_CONST /* float constant */
DOUBLE_CONST/* double constant */
DIMENSIONS /* keyword starting dimensions section, if any */
VARIABLES /* keyword starting variables section, if any */
NETCDF /* keyword declaring netcdf name */
DATA /* keyword starting data section, if any */
TYPES
COMPOUND
ENUM
OPAQUE
OPAQUESTRING /* 0x<even number of hexdigits> */
GROUP
PATH /* / or (/IDENT)+(.IDENT)? */
FILLMARKER /* "_" as opposed to the attribute */
NIL /* NIL */
_FILLVALUE
_FORMAT
_STORAGE
_CHUNKSIZES
_DEFLATELEVEL
_SHUFFLE
_ENDIANNESS
_NOFILL
_FLETCHER32
_NCPROPS
_ISNETCDF4
_SUPERBLOCK
DATASETID
%type <sym> ident typename primtype dimd varspec
attrdecl enumid path dimref fielddim fieldspec
%type <sym> typeref
%type <sym> varref
%type <sym> type_var_ref
%type <mark> enumidlist fieldlist fields varlist dimspec dimlist field
fielddimspec fielddimlist
%type <constant> dataitem constdata constint conststring constbool
%type <constant> simpleconstant function econstref
%type <datalist> datalist intlist datalist1 datalist0 arglist
%start ncdesc /* start symbol for grammar */
%%
/* RULES */
ncdesc: NETCDF
datasetid
rootgroup
{if (error_count > 0) YYABORT;}
;
datasetid: DATASETID {createrootgroup(datasetname);};
rootgroup: '{'
groupbody
subgrouplist
'}';
/* 2/3/08 - Allow group body with only attributes. (H/T John Storrs). */
groupbody:
attrdecllist
typesection /* Type definitions */
dimsection /* dimension declarations */
vasection /* variable and attribute declarations */
datasection /* data for variables within the group */
;
subgrouplist: /*empty*/ | subgrouplist namedgroup;
namedgroup: GROUP ident '{'
{
Symbol* id = $2;
markcdf4("Group specification");
if(creategroup(id) == NULL)
yyerror("duplicate group declaration within parent group for %s",
id->name);
}
groupbody
subgrouplist
{listpop(groupstack);}
'}'
attrdecllist
;
typesection: /* empty */
| TYPES {}
| TYPES typedecls
{markcdf4("Type specification");}
;
typedecls: type_or_attr_decl | typedecls type_or_attr_decl ;
typename: ident
{ /* Use when defining a type */
$1->objectclass = NC_TYPE;
if(dupobjectcheck(NC_TYPE,$1))
yyerror("duplicate type declaration for %s",
$1->name);
listpush(typdefs,(void*)$1);
}
;
type_or_attr_decl: typedecl {} | attrdecl ';' {} ;
typedecl:
enumdecl optsemicolon
| compounddecl optsemicolon
| vlendecl optsemicolon
| opaquedecl optsemicolon
;
optsemicolon: /*empty*/ | ';' ;
enumdecl: primtype ENUM typename
'{' enumidlist '}'
{
int i;
addtogroup($3); /* sets prefix*/
$3->objectclass=NC_TYPE;
$3->subclass=NC_ENUM;
$3->typ.basetype=$1;
$3->typ.size = $1->typ.size;
$3->typ.alignment = $1->typ.alignment;
stackbase=$5;
stacklen=listlength(stack);
$3->subnodes = listnew();
/* Variety of field fixups*/
/* 1. add in the enum values*/
/* 2. make this type be their container*/
/* 3. make constant names visible in the group*/
/* 4. set field basetype to be same as enum basetype*/
for(i=stackbase;i<stacklen;i++) {
Symbol* eid = (Symbol*)listget(stack,i);
assert(eid->subclass == NC_ECONST);
addtogroup(eid);
listpush($3->subnodes,(void*)eid);
eid->container = $3;
eid->typ.basetype = $3->typ.basetype;
}
listsetlength(stack,stackbase);/* remove stack nodes*/
}
;
enumidlist: enumid
{$$=listlength(stack); listpush(stack,(void*)$1);}
| enumidlist ',' enumid
{
int i;
$$=$1;
/* check for duplicates*/
stackbase=$1;
stacklen=listlength(stack);
for(i=stackbase;i<stacklen;i++) {
Symbol* elem = (Symbol*)listget(stack,i);
if(strcmp($3->name,elem->name)==0)
yyerror("duplicate enum declaration for %s",
elem->name);
}
listpush(stack,(void*)$3);
}
;
enumid: ident '=' constint
{
$1->objectclass=NC_TYPE;
$1->subclass=NC_ECONST;
$1->typ.econst=$3;
$$=$1;
}
;
opaquedecl: OPAQUE '(' INT_CONST ')' typename
{
vercheck(NC_OPAQUE);
addtogroup($5); /*sets prefix*/
$5->objectclass=NC_TYPE;
$5->subclass=NC_OPAQUE;
$5->typ.typecode=NC_OPAQUE;
$5->typ.size=int32_val;
$5->typ.alignment=nctypealignment(NC_OPAQUE);
}
;
vlendecl: typeref '(' '*' ')' typename
{
Symbol* basetype = $1;
vercheck(NC_VLEN);
addtogroup($5); /*sets prefix*/
$5->objectclass=NC_TYPE;
$5->subclass=NC_VLEN;
$5->typ.basetype=basetype;
$5->typ.typecode=NC_VLEN;
$5->typ.size=VLENSIZE;
$5->typ.alignment=nctypealignment(NC_VLEN);
}
;
compounddecl: COMPOUND typename '{' fields '}'
{
int i,j;
vercheck(NC_COMPOUND);
addtogroup($2);
/* check for duplicate field names*/
stackbase=$4;
stacklen=listlength(stack);
for(i=stackbase;i<stacklen;i++) {
Symbol* elem1 = (Symbol*)listget(stack,i);
for(j=i+1;j<stacklen;j++) {
Symbol* elem2 = (Symbol*)listget(stack,j);
if(strcmp(elem1->name,elem2->name)==0) {
yyerror("duplicate field declaration for %s",elem1->name);
}
}
}
$2->objectclass=NC_TYPE;
$2->subclass=NC_COMPOUND;
$2->typ.basetype=NULL;
$2->typ.typecode=NC_COMPOUND;
$2->subnodes = listnew();
/* Add in the fields*/
for(i=stackbase;i<stacklen;i++) {
Symbol* fsym = (Symbol*)listget(stack,i);
fsym->container = $2;
listpush($2->subnodes,(void*)fsym);
}
listsetlength(stack,stackbase);/* remove stack nodes*/
}
;
fields: field ';' {$$=$1;}
| fields field ';' {$$=$1;}
;
field: typeref fieldlist
{
int i;
$$=$2;
stackbase=$2;
stacklen=listlength(stack);
/* process each field in the fieldlist*/
for(i=stackbase;i<stacklen;i++) {
Symbol* f = (Symbol*)listget(stack,i);
f->typ.basetype = $1;
}
}
;
primtype: CHAR_K { $$ = primsymbols[NC_CHAR]; }
| BYTE_K { $$ = primsymbols[NC_BYTE]; }
| SHORT_K { $$ = primsymbols[NC_SHORT]; }
| INT_K { $$ = primsymbols[NC_INT]; }
| FLOAT_K { $$ = primsymbols[NC_FLOAT]; }
| DOUBLE_K{ $$ = primsymbols[NC_DOUBLE]; }
| UBYTE_K { vercheck(NC_UBYTE); $$ = primsymbols[NC_UBYTE]; }
| USHORT_K { vercheck(NC_USHORT); $$ = primsymbols[NC_USHORT]; }
| UINT_K { vercheck(NC_UINT); $$ = primsymbols[NC_UINT]; }
| INT64_K { vercheck(NC_INT64); $$ = primsymbols[NC_INT64]; }
| UINT64_K { vercheck(NC_UINT64); $$ = primsymbols[NC_UINT64]; }
;
dimsection: /* empty */
| DIMENSIONS {}
| DIMENSIONS dimdecls {}
;
dimdecls: dim_or_attr_decl ';'
| dimdecls dim_or_attr_decl ';'
;
dim_or_attr_decl: dimdeclist {} | attrdecl {} ;
dimdeclist: dimdecl
| dimdeclist ',' dimdecl
;
dimdecl:
dimd '=' constint
{
$1->dim.declsize = (size_t)extractint($3);
#ifdef GENDEBUG1
fprintf(stderr,"dimension: %s = %llu\n",$1->name,(unsigned long long)$1->dim.declsize);
#endif
}
| dimd '=' NC_UNLIMITED_K
{
$1->dim.declsize = NC_UNLIMITED;
$1->dim.isunlimited = 1;
#ifdef GENDEBUG1
fprintf(stderr,"dimension: %s = UNLIMITED\n",$1->name);
#endif
}
;
dimd: ident
{
$1->objectclass=NC_DIM;
if(dupobjectcheck(NC_DIM,$1))
yyerror( "Duplicate dimension declaration for %s",
$1->name);
addtogroup($1);
$$=$1;
listpush(dimdefs,(void*)$1);
}
;
vasection: /* empty */
| VARIABLES {}
| VARIABLES vadecls {}
;
vadecls: vadecl_or_attr ';'
| vadecls vadecl_or_attr ';'
;
vadecl_or_attr: vardecl {} | attrdecl {} ;
vardecl: typeref varlist
{
int i;
stackbase=$2;
stacklen=listlength(stack);
/* process each variable in the varlist*/
for(i=stackbase;i<stacklen;i++) {
Symbol* sym = (Symbol*)listget(stack,i);
sym->objectclass = NC_VAR;
if(dupobjectcheck(NC_VAR,sym)) {
yyerror("Duplicate variable declaration for %s",
sym->name);
} else {
sym->typ.basetype = $1;
addtogroup(sym);
listpush(vardefs,(void*)sym);
}
}
listsetlength(stack,stackbase);/* remove stack nodes*/
}
;
varlist: varspec
{$$=listlength(stack);
listpush(stack,(void*)$1);
}
| varlist ',' varspec
{$$=$1; listpush(stack,(void*)$3);}
;
varspec: ident dimspec
{
int i;
Dimset dimset;
stacklen=listlength(stack);
stackbase=$2;
count = stacklen - stackbase;
if(count >= NC_MAX_VAR_DIMS) {
yyerror("%s has too many dimensions",$1->name);
count = NC_MAX_VAR_DIMS - 1;
stacklen = stackbase + count;
}
dimset.ndims = count;
/* extract the actual dimensions*/
if(dimset.ndims > 0) {
for(i=0;i<count;i++) {
Symbol* dsym = (Symbol*)listget(stack,stackbase+i);
dimset.dimsyms[i] = dsym;
}
$1->typ.dimset = dimset;
}
$1->typ.basetype = NULL; /* not yet known*/
$1->objectclass=NC_VAR;
listsetlength(stack,stackbase);/* remove stack nodes*/
}
;
dimspec: /* empty */ {$$=listlength(stack);}
| '(' dimlist ')' {$$=$2;}
;
dimlist: dimref {$$=listlength(stack); listpush(stack,(void*)$1);}
| dimlist ',' dimref
{$$=$1; listpush(stack,(void*)$3);}
;
dimref: path
{Symbol* dimsym = $1;
dimsym->objectclass = NC_DIM;
/* Find the actual dimension*/
dimsym = locate(dimsym);
if(dimsym == NULL) {
derror("Undefined or forward referenced dimension: %s",$1->name);
YYABORT;
}
$$=dimsym;
}
;
fieldlist:
fieldspec
{$$=listlength(stack);
listpush(stack,(void*)$1);
}
| fieldlist ',' fieldspec
{$$=$1; listpush(stack,(void*)$3);}
;
fieldspec:
ident fielddimspec
{
int i;
Dimset dimset;
stackbase=$2;
stacklen=listlength(stack);
count = stacklen - stackbase;
if(count >= NC_MAX_VAR_DIMS) {
yyerror("%s has too many dimensions",$1->name);
count = NC_MAX_VAR_DIMS - 1;
stacklen = stackbase + count;
}
dimset.ndims = count;
if(count > 0) {
/* extract the actual dimensions*/
for(i=0;i<count;i++) {
Symbol* dsym = (Symbol*)listget(stack,stackbase+i);
dimset.dimsyms[i] = dsym;
}
$1->typ.dimset = dimset;
}
$1->typ.basetype = NULL; /* not yet known*/
$1->objectclass=NC_TYPE;
$1->subclass=NC_FIELD;
listsetlength(stack,stackbase);/* remove stack nodes*/
$$ = $1;
}
;
fielddimspec: /* empty */ {$$=listlength(stack);}
| '(' fielddimlist ')' {$$=$2;}
;
fielddimlist:
fielddim {$$=listlength(stack); listpush(stack,(void*)$1);}
| fielddimlist ',' fielddim
{$$=$1; listpush(stack,(void*)$3);}
;
fielddim:
UINT_CONST
{ /* Anonymous integer dimension.
Can only occur in type definitions*/
char anon[32];
sprintf(anon,"const%u",uint32_val);
$$ = install(anon);
$$->objectclass = NC_DIM;
$$->dim.isconstant = 1;
$$->dim.declsize = uint32_val;
}
| INT_CONST
{ /* Anonymous integer dimension.
Can only occur in type definitions*/
char anon[32];
if(int32_val <= 0) {
derror("field dimension must be positive");
YYABORT;
}
sprintf(anon,"const%d",int32_val);
$$ = install(anon);
$$->objectclass = NC_DIM;
$$->dim.isconstant = 1;
$$->dim.declsize = int32_val;
}
;
/* Use this when referencing defined objects */
varref:
type_var_ref
{Symbol* vsym = $1;
if(vsym->objectclass != NC_VAR) {
derror("Undefined or forward referenced variable: %s",vsym->name);
YYABORT;
}
$$=vsym;
}
;
typeref:
type_var_ref
{Symbol* tsym = $1;
if(tsym->objectclass != NC_TYPE) {
derror("Undefined or forward referenced type: %s",tsym->name);
YYABORT;
}
$$=tsym;
}
;
type_var_ref:
path
{Symbol* tvsym = $1; Symbol* sym;
/* disambiguate*/
tvsym->objectclass = NC_VAR;
sym = locate(tvsym);
if(sym == NULL) {
tvsym->objectclass = NC_TYPE;
sym = locate(tvsym);
if(tvsym == NULL) {
derror("Undefined or forward referenced name: %s",$1->name);
YYABORT;
} else tvsym = sym;
} else tvsym = sym;
if(tvsym == NULL) {
derror("Undefined name (line %d): %s",$1->lineno,$1->name);
YYABORT;
}
$$=tvsym;
}
| primtype {$$=$1;}
;
/* Use this for all attribute decls */
/* Global vs var-specific will be separated in makeattribute */
/* Watch out; this is left recursive */
attrdecllist: /*empty*/ {} | attrdecl ';' attrdecllist {} ;
attrdecl:
':' _NCPROPS '=' conststring
{$$ = makespecial(_NCPROPS_FLAG,NULL,NULL,(void*)&$4,ATTRGLOBAL);}
| ':' _ISNETCDF4 '=' constbool
{$$ = makespecial(_ISNETCDF4_FLAG,NULL,NULL,(void*)&$4,ATTRGLOBAL);}
| ':' _SUPERBLOCK '=' constint
{$$ = makespecial(_SUPERBLOCK_FLAG,NULL,NULL,(void*)&$4,ATTRGLOBAL);}
| ':' ident '=' datalist
{ $$=makeattribute($2,NULL,NULL,$4,ATTRGLOBAL);}
| typeref type_var_ref ':' ident '=' datalist
{Symbol* tsym = $1; Symbol* vsym = $2; Symbol* asym = $4;
if(vsym->objectclass == NC_VAR) {
$$=makeattribute(asym,vsym,tsym,$6,ATTRVAR);
} else {
derror("Doubly typed attribute: %s",asym->name);
YYABORT;
}
}
| type_var_ref ':' ident '=' datalist
{Symbol* sym = $1; Symbol* asym = $3;
if(sym->objectclass == NC_VAR) {
$$=makeattribute(asym,sym,NULL,$5,ATTRVAR);
} else if(sym->objectclass == NC_TYPE) {
$$=makeattribute(asym,NULL,sym,$5,ATTRGLOBAL);
} else {
derror("Attribute prefix not a variable or type: %s",asym->name);
YYABORT;
}
}
| type_var_ref ':' _FILLVALUE '=' datalist
{$$ = makespecial(_FILLVALUE_FLAG,$1,NULL,(void*)$5,0);}
| typeref type_var_ref ':' _FILLVALUE '=' datalist
{$$ = makespecial(_FILLVALUE_FLAG,$2,$1,(void*)$6,0);}
| type_var_ref ':' _STORAGE '=' conststring
{$$ = makespecial(_STORAGE_FLAG,$1,NULL,(void*)&$5,1);}
| type_var_ref ':' _CHUNKSIZES '=' intlist
{$$ = makespecial(_CHUNKSIZES_FLAG,$1,NULL,(void*)$5,0);}
| type_var_ref ':' _FLETCHER32 '=' constbool
{$$ = makespecial(_FLETCHER32_FLAG,$1,NULL,(void*)&$5,1);}
| type_var_ref ':' _DEFLATELEVEL '=' constint
{$$ = makespecial(_DEFLATE_FLAG,$1,NULL,(void*)&$5,1);}
| type_var_ref ':' _SHUFFLE '=' constbool
{$$ = makespecial(_SHUFFLE_FLAG,$1,NULL,(void*)&$5,1);}
| type_var_ref ':' _ENDIANNESS '=' conststring
{$$ = makespecial(_ENDIAN_FLAG,$1,NULL,(void*)&$5,1);}
| type_var_ref ':' _NOFILL '=' constbool
{$$ = makespecial(_NOFILL_FLAG,$1,NULL,(void*)&$5,1);}
| ':' _FORMAT '=' conststring
{$$ = makespecial(_FORMAT_FLAG,NULL,NULL,(void*)&$4,1);}
;
path:
ident
{
$$=$1;
$1->ref.is_ref=1;
$1->is_prefixed=0;
setpathcurrent($1);
}
| PATH
{
$$=$1;
$1->ref.is_ref=1;
$1->is_prefixed=1;
/* path is set in ncgen.l*/
}
;
datasection: /* empty */
| DATA {}
| DATA datadecls {}
;
datadecls: datadecl ';'
| datadecls datadecl ';'
;
datadecl: varref '=' datalist
{$1->data = $3;}
;
datalist:
datalist0 {$$ = $1;}
| datalist1 {$$ = $1;}
;
datalist0:
/*empty*/ {$$ = builddatalist(0);}
;
datalist1: /* Must have at least 1 element */
dataitem {$$ = builddatalist(0); datalistextend($$,&($1));}
| datalist ',' dataitem
{datalistextend($1,&($3)); $$=$1;}
;
dataitem:
constdata {$$=$1;}
| '{' datalist '}' {$$=builddatasublist($2);}
;
constdata:
simpleconstant {$$=$1;}
| OPAQUESTRING {$$=makeconstdata(NC_OPAQUE);}
| FILLMARKER {$$=makeconstdata(NC_FILLVALUE);}
| NIL {$$=makeconstdata(NC_NIL);}
| econstref {$$=$1;}
| function
;
econstref:
path {$$ = makeenumconstref($1);}
;
function:
ident '(' arglist ')' {$$=evaluate($1,$3);}
;
arglist:
simpleconstant
{$$ = builddatalist(0); datalistextend($$,&($1));}
| arglist ',' simpleconstant
{datalistextend($1,&($3)); $$=$1;}
;
simpleconstant:
CHAR_CONST {$$=makeconstdata(NC_CHAR);} /* never used apparently*/
| BYTE_CONST {$$=makeconstdata(NC_BYTE);}
| SHORT_CONST {$$=makeconstdata(NC_SHORT);}
| INT_CONST {$$=makeconstdata(NC_INT);}
| INT64_CONST {$$=makeconstdata(NC_INT64);}
| UBYTE_CONST {$$=makeconstdata(NC_UBYTE);}
| USHORT_CONST {$$=makeconstdata(NC_USHORT);}
| UINT_CONST {$$=makeconstdata(NC_UINT);}
| UINT64_CONST {$$=makeconstdata(NC_UINT64);}
| FLOAT_CONST {$$=makeconstdata(NC_FLOAT);}
| DOUBLE_CONST {$$=makeconstdata(NC_DOUBLE);}
| TERMSTRING {$$=makeconstdata(NC_STRING);}
;
intlist:
constint {$$ = builddatalist(0); datalistextend($$,&($1));}
| intlist ',' constint {$$=$1; datalistextend($1,&($3));}
;
constint:
INT_CONST
{$$=makeconstdata(NC_INT);}
| UINT_CONST
{$$=makeconstdata(NC_UINT);}
| INT64_CONST
{$$=makeconstdata(NC_INT64);}
| UINT64_CONST
{$$=makeconstdata(NC_UINT64);}
;
conststring:
TERMSTRING {$$=makeconstdata(NC_STRING);}
;
constbool:
conststring {$$=$1;}
| constint {$$=$1;}
/* End OF RULES */
/* Push all idents thru here*/
ident:
IDENT {$$=$1;}
;
%%
#ifndef NO_STDARG
static void
yyerror(const char *fmt, ...)
#else
static void
yyerror(fmt,va_alist) const char* fmt; va_dcl
#endif
{
va_list argv;
vastart(argv,fmt);
(void)fprintf(stderr,"%s: %s line %d: ", progname, cdlname, lineno);
vderror(fmt,argv);
vaend(argv,fmt);
}
/* undefine yywrap macro, in case we are using bison instead of yacc */
#ifdef yywrap
#undef yywrap
#endif
static int
ncgwrap(void) /* returns 1 on EOF if no more input */
{
return 1;
}
/* get lexical input routine generated by lex */
#include "ncgenl.c"
/* Really should init our data within this file */
void
parse_init(void)
{
int i;
opaqueid = 0;
arrayuid = 0;
symlist = NULL;
stack = listnew();
groupstack = listnew();
consttype = NC_NAT;
grpdefs = listnew();
dimdefs = listnew();
attdefs = listnew();
gattdefs = listnew();
xattdefs = listnew();
typdefs = listnew();
vardefs = listnew();
condefs = listnew();
tmp = listnew();
/* Create the primitive types */
for(i=NC_NAT+1;i<=NC_STRING;i++) {
primsymbols[i] = makeprimitivetype(i);
}
lex_init();
}
static Symbol*
makeprimitivetype(nc_type nctype)
{
Symbol* sym = install(primtypenames[nctype]);
sym->objectclass=NC_TYPE;
sym->subclass=NC_PRIM;
sym->ncid = nctype;
sym->typ.typecode = nctype;
sym->typ.size = ncsize(nctype);
sym->typ.nelems = 1;
sym->typ.alignment = nctypealignment(nctype);
/* Make the basetype circular so we can always ask for it */
sym->typ.basetype = sym;
sym->prefix = listnew();
return sym;
}
/* Symbol table operations for ncgen tool */
/* install sname in symbol table even if it is already there */
Symbol*
install(const char *sname)
{
Symbol* sp;
sp = (Symbol*) emalloc (sizeof (struct Symbol));
memset((void*)sp,0,sizeof(struct Symbol));
sp->name = nulldup(sname);
sp->next = symlist;
sp->lineno = lineno;
sp->location = currentgroup();
sp->container = currentgroup();
symlist = sp;
return sp;
}
static Symbol*
currentgroup(void)
{
if(listlength(groupstack) == 0) return rootgroup;
return (Symbol*)listtop(groupstack);
}
static Symbol*
createrootgroup(const char* dataset)
{
Symbol* gsym = install(dataset);
gsym->objectclass = NC_GRP;
gsym->container = NULL;
gsym->subnodes = listnew();
gsym->grp.is_root = 1;
gsym->prefix = listnew();
listpush(grpdefs,(void*)gsym);
rootgroup = gsym;
return gsym;
}
static Symbol*
creategroup(Symbol * gsym)
{
/* See if this group already exists in currentgroup */
gsym->objectclass = NC_GRP;
if(dupobjectcheck(NC_GRP,gsym)) {
derror("Duplicate group name in same scope: %s",gsym->name);
return NULL;
}
addtogroup(gsym);
gsym->subnodes = listnew();
listpush(groupstack,(void*)gsym);
listpush(grpdefs,(void*)gsym);
return gsym;
}
static NCConstant
makeconstdata(nc_type nctype)
{