-
Notifications
You must be signed in to change notification settings - Fork 35
/
arrays.c
976 lines (847 loc) · 35.7 KB
/
arrays.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
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
/* ------------------------------------------------------------------------- */
/* "arrays" : Parses array declarations and constructs arrays from them; */
/* likewise global variables, which are in some ways a */
/* simpler form of the same thing. */
/* */
/* Part of Inform 6.43 */
/* copyright (c) Graham Nelson 1993 - 2024 */
/* */
/* ------------------------------------------------------------------------- */
#include "header.h"
/* ------------------------------------------------------------------------- */
/* Arrays defined below: */
/* */
/* uchar dynamic_array_area[] Initial values for the bytes of */
/* the dynamic array area */
/* uchar static_array_area[] Initial values for the bytes of */
/* the static array area */
/* int32 global_initial_value[n] The initialised value of the nth */
/* global variable (counting 0 - 239, */
/* or higher for Glulx) */
/* */
/* The "dynamic array area" is the Z-machine area holding the current */
/* values of the global variables (in 240x2 = 480 bytes) followed by any */
/* (dynamic) arrays which may be defined. */
/* */
/* In Glulx, we don't keep the global variables in dynamic_array_area. */
/* Array data starts at the start. */
/* */
/* We can also store arrays (but not globals) into static memory (ROM). */
/* The storage for these goes, unsurprisingly, into static_array_area. */
/* ------------------------------------------------------------------------- */
uchar *dynamic_array_area; /* See above */
memory_list dynamic_array_area_memlist;
int dynamic_array_area_size; /* Size in bytes */
int32 *global_initial_value; /* Allocated to no_globals */
static memory_list global_initial_value_memlist;
int no_globals; /* Number of global variables used
by the programmer (Inform itself
uses the top seven -- but these do
not count) */
/* In Glulx, Inform uses the bottom
ten. */
uchar *static_array_area;
memory_list static_array_area_memlist;
int static_array_area_size;
int no_arrays;
arrayinfo *arrays;
static memory_list arrays_memlist;
static int array_entry_size, /* 1 for byte array, 2 for word array */
array_base; /* Offset in dynamic array area of the
array being constructed. During the
same time, dynamic_array_area_size
is the offset of the initial entry
in the array: so for "table" and
"string" arrays, these numbers are
different (by 2 and 1 bytes resp) */
/* In Glulx, of course, that will be
4 instead of 2. */
static memory_list current_array_name; /* The name of the global or array
currently being compiled. */
/* In Z-code, the built-in globals may be numbered differently depending
on the version and the ZCODE_COMPACT_GLOBALS option. Here we store
the Z-code global index for each variable.
*/
int globalv_z_temp_var1;
int globalv_z_temp_var2;
int globalv_z_temp_var3;
int globalv_z_temp_var4;
int globalv_z_sw__var;
int globalv_z_self;
int globalv_z_sender;
/* The range of global variables available to the user. These will be set
to avoid globalv_z_temp_var1..globalv_z_sender.
To make things just a bit confusing, zcode_user_global_start_no is in
the 0..239 range. zcode_highest_allowed_global, and the values above,
are shifted by 16. (Remember that variable indexes 0-15 are reserved
for the stack pointer and locals.)
*/
int zcode_user_global_start_no;
int zcode_highest_allowed_global;
/* Complete the array. Fill in the size field (if it has one) and
advance foo_array_area_size.
*/
extern void finish_array(int32 i, int is_static)
{
uchar *area;
int area_size;
if (!is_static) {
ensure_memory_list_available(&dynamic_array_area_memlist, dynamic_array_area_size+array_base+1*array_entry_size);
area = dynamic_array_area;
area_size = dynamic_array_area_size;
}
else {
ensure_memory_list_available(&static_array_area_memlist, static_array_area_size+array_base+1*array_entry_size);
area = static_array_area;
area_size = static_array_area_size;
}
if (i == 0) {
error("An array must have at least one entry");
}
/* Write the array size into the 0th byte/word of the array, if it's
a "table" or "string" array */
if (!glulx_mode) {
if (array_base != area_size)
{ if (area_size-array_base==2)
{ area[array_base] = i/256;
area[array_base+1] = i%256;
}
else
{ if (i>=256)
error("A 'string' array can have at most 256 entries");
area[array_base] = i;
}
}
}
else {
if (array_base != area_size)
{ if (area_size-array_base==4)
{
area[array_base] = (i >> 24) & 0xFF;
area[array_base+1] = (i >> 16) & 0xFF;
area[array_base+2] = (i >> 8) & 0xFF;
area[array_base+3] = (i) & 0xFF;
}
else
{ if (i>=256)
error("A 'string' array can have at most 256 entries");
area[array_base] = i;
}
}
}
/* Move on the static/dynamic array size so that it now points to the
next available free space */
if (!is_static) {
dynamic_array_area_size += i*array_entry_size;
}
else {
static_array_area_size += i*array_entry_size;
}
}
/* Fill in array entry i (in either the static or dynamic area).
When this is called, foo_array_area_size is the end of the previous
array; we're writing after that.
*/
extern void array_entry(int32 i, int is_static, assembly_operand VAL)
{
uchar *area;
int area_size;
if (!is_static) {
ensure_memory_list_available(&dynamic_array_area_memlist, dynamic_array_area_size+(i+1)*array_entry_size);
area = dynamic_array_area;
area_size = dynamic_array_area_size;
}
else {
ensure_memory_list_available(&static_array_area_memlist, static_array_area_size+(i+1)*array_entry_size);
area = static_array_area;
area_size = static_array_area_size;
}
if (!glulx_mode) {
/* Array entry i (initial entry has i=0) is set to Z-machine value j */
if (array_entry_size==1)
{ area[area_size+i] = (VAL.value)%256;
if (VAL.marker != 0)
error("Entries in byte arrays and strings must be known constants");
/* If the entry is too large for a byte array, issue a warning
and truncate the value */
else
if (VAL.value >= 256)
warning("Entry in '->', 'string' or 'buffer' array not in range 0 to 255");
}
else
{
int32 addr = area_size + 2*i;
area[addr] = (VAL.value)/256;
area[addr+1] = (VAL.value)%256;
if (VAL.marker != 0) {
if (!is_static) {
backpatch_zmachine(VAL.marker, DYNAMIC_ARRAY_ZA,
addr);
}
else {
backpatch_zmachine(VAL.marker, STATIC_ARRAY_ZA,
addr);
}
}
}
}
else {
/* Array entry i (initial entry has i=0) is set to value j */
if (array_entry_size==1)
{ area[area_size+i] = (VAL.value) & 0xFF;
if (VAL.marker != 0)
error("Entries in byte arrays and strings must be known constants");
/* If the entry is too large for a byte array, issue a warning
and truncate the value */
else
if (VAL.value >= 256)
warning("Entry in '->', 'string' or 'buffer' array not in range 0 to 255");
}
else if (array_entry_size==4)
{
int32 addr = area_size + 4*i;
area[addr] = (VAL.value >> 24) & 0xFF;
area[addr+1] = (VAL.value >> 16) & 0xFF;
area[addr+2] = (VAL.value >> 8) & 0xFF;
area[addr+3] = (VAL.value) & 0xFF;
if (VAL.marker != 0) {
if (!is_static) {
backpatch_zmachine(VAL.marker, DYNAMIC_ARRAY_ZA,
addr);
}
else {
/* We can't use backpatch_zmachine() because that only applies to RAM. Instead we add an entry to staticarray_backpatch_table.
A backpatch entry is five bytes: *_MV followed by the array offset (in static array area). */
if (bpatch_trace_setting >= 2)
printf("BP added: MV %d staticarray %04x\n", VAL.marker, addr);
ensure_memory_list_available(&staticarray_backpatch_table_memlist, staticarray_backpatch_size+5);
staticarray_backpatch_table[staticarray_backpatch_size++] = VAL.marker;
staticarray_backpatch_table[staticarray_backpatch_size++] = ((addr >> 24) & 0xFF);
staticarray_backpatch_table[staticarray_backpatch_size++] = ((addr >> 16) & 0xFF);
staticarray_backpatch_table[staticarray_backpatch_size++] = ((addr >> 8) & 0xFF);
staticarray_backpatch_table[staticarray_backpatch_size++] = (addr & 0xFF);
}
}
}
else
{
error("Somehow created an array of shorts");
}
}
}
/* ------------------------------------------------------------------------- */
/* Global and Array directives. */
/* */
/* Global <variablename> [ [=] <value> ] */
/* */
/* Array <arrayname> [static] <array specification> */
/* */
/* where an array specification is: */
/* */
/* | -> | <number-of-entries> */
/* | --> | <entry-1> ... <entry-n> */
/* | string | [ <entry-1> [;] <entry-2> ... <entry-n> ]; */
/* | table */
/* | buffer */
/* */
/* The "static" keyword (arrays only) places the array in static memory. */
/* */
/* ------------------------------------------------------------------------- */
extern void set_variable_value(int i, int32 v)
{
/* This isn't currently called to create a new global, but it has
been used that way within living memory. So we call ensure. */
ensure_memory_list_available(&global_initial_value_memlist, i+1);
global_initial_value[i]=v;
}
extern void ensure_builtin_globals(void)
{
/* A corner case: in v3 ZCODE_COMPACT_GLOBALS mode, we might not
have allocated enough globals to hit the "skip ahead 7" point.
Adjust the global count to ensure that the built-ins are
reserved.
In all other cases, this does nothing and can be peacefully
ignored. */
if (!glulx_mode && ZCODE_COMPACT_GLOBALS && version_number <= 3 && no_globals < 10) {
no_globals = 10;
}
}
/* There are four ways to initialise arrays: */
#define UNSPECIFIED_AI -1
#define NULLS_AI 0
#define DATA_AI 1
#define ASCII_AI 2
#define BRACKET_AI 3
extern void make_global()
{
int32 i;
int name_length;
assembly_operand AO;
uint32 globalnum;
int32 global_symbol;
debug_location_beginning beginning_debug_location =
get_token_location_beginning();
directive_keywords.enabled = FALSE;
get_next_token();
i = token_value;
global_symbol = i;
name_length = strlen(token_text) + 1;
ensure_memory_list_available(¤t_array_name, name_length);
strncpy(current_array_name.data, token_text, name_length);
if (!glulx_mode) {
if ((token_type==SYMBOL_TT) && (symbols[i].type==GLOBAL_VARIABLE_T)
&& (symbols[i].value >= zcode_highest_allowed_global)) {
globalnum = symbols[i].value - MAX_LOCAL_VARIABLES;
goto RedefinitionOfSystemVar;
}
}
else {
if ((token_type==SYMBOL_TT) && (symbols[i].type==GLOBAL_VARIABLE_T)) {
globalnum = symbols[i].value - MAX_LOCAL_VARIABLES;
goto RedefinitionOfSystemVar;
}
}
if (token_type != SYMBOL_TT)
{ discard_token_location(beginning_debug_location);
ebf_curtoken_error("new global variable name");
panic_mode_error_recovery(); return;
}
if (!(symbols[i].flags & UNKNOWN_SFLAG))
{ discard_token_location(beginning_debug_location);
ebf_symbol_error("new global variable name", token_text, typename(symbols[i].type), symbols[i].line);
panic_mode_error_recovery(); return;
}
if (symbols[i].flags & USED_SFLAG)
error_named("Variable must be defined before use:", token_text);
directive_keywords.enabled = TRUE;
get_next_token();
directive_keywords.enabled = FALSE;
if ((token_type==DIR_KEYWORD_TT)&&(token_value==STATIC_DK)) {
error("Global variables cannot be static");
}
else {
put_token_back();
}
if (!glulx_mode && ZCODE_COMPACT_GLOBALS && version_number <= 3 && no_globals == 3) {
/* Special handling for ZCODE_COMPACT_GLOBALS in z3.
Because z3 requires that the first three globals contain
location, turns and score, we've let those be user globals.
Now we've reached globalv_z_temp_var1, so we skip ahead
7. */
no_globals += 7;
}
if (!glulx_mode && no_globals == (233 + zcode_user_global_start_no))
{ discard_token_location(beginning_debug_location);
error("All 233 global variables already declared");
panic_mode_error_recovery();
return;
}
globalnum = no_globals;
ensure_memory_list_available(&variables_memlist, MAX_LOCAL_VARIABLES+no_globals+1);
variables[MAX_LOCAL_VARIABLES+no_globals].token = i;
variables[MAX_LOCAL_VARIABLES+no_globals].usage = FALSE;
assign_symbol(i, MAX_LOCAL_VARIABLES+no_globals, GLOBAL_VARIABLE_T);
ensure_memory_list_available(&global_initial_value_memlist, no_globals+1);
global_initial_value[no_globals++]=0;
directive_keywords.enabled = TRUE;
RedefinitionOfSystemVar:
get_next_token();
if ((token_type == SEP_TT) && (token_value == SEMICOLON_SEP))
{
/* No initial value. */
put_token_back();
if (debugfile_switch)
{
char *global_name = current_array_name.data;
debug_file_printf("<global-variable>");
debug_file_printf("<identifier>%s</identifier>", global_name);
debug_file_printf("<address>");
write_debug_global_backpatch(symbols[global_symbol].value);
debug_file_printf("</address>");
write_debug_locations
(get_token_location_end(beginning_debug_location));
debug_file_printf("</global-variable>");
}
return;
}
if (((token_type==SEP_TT)&&(token_value==ARROW_SEP))
|| ((token_type==SEP_TT)&&(token_value==DARROW_SEP))
|| ((token_type==DIR_KEYWORD_TT)&&(token_value==STRING_DK))
|| ((token_type==DIR_KEYWORD_TT)&&(token_value==TABLE_DK))
|| ((token_type==DIR_KEYWORD_TT)&&(token_value==BUFFER_DK)))
{
error("use 'Array' to define arrays, not 'Global'");
return;
}
/* Skip "=" if present. */
if (!((token_type == SEP_TT) && (token_value == SETEQUALS_SEP)))
put_token_back();
AO = parse_expression(CONSTANT_CONTEXT);
if (!glulx_mode) {
if (AO.marker != 0)
backpatch_zmachine(AO.marker, DYNAMIC_ARRAY_ZA,
2*globalnum);
}
else {
if (AO.marker != 0)
backpatch_zmachine(AO.marker, GLOBALVAR_ZA,
4*globalnum);
}
if (globalnum >= global_initial_value_memlist.count)
compiler_error("Globalnum out of range");
global_initial_value[globalnum] = AO.value;
if (debugfile_switch)
{
char *global_name = current_array_name.data;
debug_file_printf("<global-variable>");
debug_file_printf("<identifier>%s</identifier>", global_name);
debug_file_printf("<address>");
write_debug_global_backpatch(symbols[global_symbol].value);
debug_file_printf("</address>");
write_debug_locations
(get_token_location_end(beginning_debug_location));
debug_file_printf("</global-variable>");
}
}
extern void make_array()
{
int32 i;
int name_length;
int array_type, data_type;
int is_static = FALSE;
assembly_operand AO;
int extraspace;
int32 global_symbol;
debug_location_beginning beginning_debug_location =
get_token_location_beginning();
directive_keywords.enabled = FALSE;
get_next_token();
i = token_value;
global_symbol = i;
name_length = strlen(token_text) + 1;
ensure_memory_list_available(¤t_array_name, name_length);
strncpy(current_array_name.data, token_text, name_length);
if (token_type != SYMBOL_TT)
{ discard_token_location(beginning_debug_location);
ebf_curtoken_error("new array name");
panic_mode_error_recovery(); return;
}
if (!(symbols[i].flags & UNKNOWN_SFLAG))
{ discard_token_location(beginning_debug_location);
ebf_symbol_error("new array name", token_text, typename(symbols[i].type), symbols[i].line);
panic_mode_error_recovery(); return;
}
directive_keywords.enabled = TRUE;
get_next_token();
directive_keywords.enabled = FALSE;
if ((token_type==DIR_KEYWORD_TT)&&(token_value==STATIC_DK)) {
is_static = TRUE;
}
else {
put_token_back();
}
if (!is_static) {
assign_symbol(i, dynamic_array_area_size, ARRAY_T);
}
else {
assign_symbol(i, static_array_area_size, STATIC_ARRAY_T);
}
ensure_memory_list_available(&arrays_memlist, no_arrays+1);
arrays[no_arrays].symbol = i;
directive_keywords.enabled = TRUE;
get_next_token();
if ((token_type == SEP_TT) && (token_value == SEMICOLON_SEP))
{
discard_token_location(beginning_debug_location);
ebf_curtoken_error("array definition");
put_token_back();
return;
}
array_type = BYTE_ARRAY; data_type = UNSPECIFIED_AI;
/* The keywords "data", "initial", and "initstr" used to be accepted
here -- but only in a Global directive, not Array. The Global directive
no longer calls here, so those keywords are now (more) obsolete.
*/
if ((token_type==SEP_TT)&&(token_value==ARROW_SEP))
array_type = BYTE_ARRAY;
else if ((token_type==SEP_TT)&&(token_value==DARROW_SEP))
array_type = WORD_ARRAY;
else if ((token_type==DIR_KEYWORD_TT)&&(token_value==STRING_DK))
array_type = STRING_ARRAY;
else if ((token_type==DIR_KEYWORD_TT)&&(token_value==TABLE_DK))
array_type = TABLE_ARRAY;
else if ((token_type==DIR_KEYWORD_TT)&&(token_value==BUFFER_DK))
array_type = BUFFER_ARRAY;
else
{ discard_token_location(beginning_debug_location);
ebf_curtoken_error("'->', '-->', 'string', 'table' or 'buffer'");
panic_mode_error_recovery();
return;
}
array_entry_size=1;
if ((array_type==WORD_ARRAY) || (array_type==TABLE_ARRAY))
array_entry_size=WORDSIZE;
get_next_token();
if ((token_type == SEP_TT) && (token_value == SEMICOLON_SEP))
{ discard_token_location(beginning_debug_location);
error("No array size or initial values given");
put_token_back();
return;
}
switch(data_type)
{ case UNSPECIFIED_AI:
if ((token_type == SEP_TT) && (token_value == OPEN_SQUARE_SEP))
data_type = BRACKET_AI;
else
{ data_type = NULLS_AI;
if (token_type == DQ_TT) data_type = ASCII_AI;
get_next_token();
if (!((token_type == SEP_TT) && (token_value == SEMICOLON_SEP)))
data_type = DATA_AI;
put_token_back();
put_token_back();
}
break;
case NULLS_AI: obsolete_warning("use '->' instead of 'data'"); break;
case DATA_AI: obsolete_warning("use '->' instead of 'initial'"); break;
case ASCII_AI: obsolete_warning("use '->' instead of 'initstr'"); break;
}
/* Leave room to write the array size in later, if string/table array */
extraspace = 0;
if ((array_type==STRING_ARRAY) || (array_type==TABLE_ARRAY))
extraspace += array_entry_size;
if (array_type==BUFFER_ARRAY)
extraspace += WORDSIZE;
if (!is_static) {
array_base = dynamic_array_area_size;
dynamic_array_area_size += extraspace;
}
else {
array_base = static_array_area_size;
static_array_area_size += extraspace;
}
arrays[no_arrays].type = array_type;
arrays[no_arrays].loc = is_static;
/* Note that, from this point, we must continue through finish_array().
Exiting this routine on error causes problems. */
switch(data_type)
{
case NULLS_AI:
AO = parse_expression(CONSTANT_CONTEXT);
CalculatedArraySize:
if (AO.marker != 0)
{ error("Array sizes must be known now, not defined later");
break;
}
if (!glulx_mode) {
if ((AO.value <= 0) || (AO.value >= 32768))
{ error("An array must have between 1 and 32767 entries");
AO.value = 1;
}
}
else {
if (AO.value <= 0 || (AO.value & 0x80000000))
{ error("An array may not have 0 or fewer entries");
AO.value = 1;
}
}
{ for (i=0; i<AO.value; i++) array_entry(i, is_static, zero_operand);
}
break;
case DATA_AI:
/* In this case the array is initialised to the sequence of
constant values supplied on the same line */
i=0;
do
{
/* This isn't the start of a statement, but it's safe to
release token texts anyway. Expressions in an array
list are independent of each other. */
release_token_texts();
get_next_token();
if ((token_type == SEP_TT) && (token_value == SEMICOLON_SEP))
break;
if ((token_type == SEP_TT)
&& ((token_value == OPEN_SQUARE_SEP)
|| (token_value == CLOSE_SQUARE_SEP)))
{ discard_token_location(beginning_debug_location);
error("Missing ';' to end the initial array values "
"before \"[\" or \"]\"");
}
put_token_back();
AO = parse_expression(ARRAY_CONTEXT);
if (AO.marker == ERROR_MV)
break;
if (i == 0)
{ get_next_token();
put_token_back();
if ((token_type == SEP_TT)
&& (token_value == SEMICOLON_SEP))
{ data_type = NULLS_AI;
goto CalculatedArraySize;
}
}
array_entry(i, is_static, AO);
i++;
} while (TRUE);
put_token_back();
break;
case ASCII_AI:
/* In this case the array is initialised to the ASCII values of
the characters of a given "quoted string" */
get_next_token();
if (token_type != DQ_TT)
{ ebf_curtoken_error("literal text in double-quotes");
token_text = "error";
}
{ assembly_operand chars;
int j;
INITAO(&chars);
for (i=0,j=0; token_text[j]!=0; i++,j+=textual_form_length)
{
int32 unicode; int zscii;
unicode = text_to_unicode(token_text+j);
if (glulx_mode)
{
if (array_entry_size == 1 && (unicode < 0 || unicode >= 256))
{
error("Unicode characters beyond Latin-1 cannot be used in a byte array");
}
else
{
chars.value = unicode;
}
}
else /* Z-code */
{
zscii = unicode_to_zscii(unicode);
if ((zscii != 5) && (zscii < 0x100)) chars.value = zscii;
else
{ unicode_char_error("Character can only be used if declared in \
advance as part of 'Zcharacter table':", unicode);
chars.value = '?';
}
}
chars.marker = 0;
set_constant_ot(&chars);
array_entry(i, is_static, chars);
}
}
break;
case BRACKET_AI:
/* In this case the array is initialised to the sequence of
constant values given over a whole range of compiler-lines,
between square brackets [ and ] */
i = 0;
while (TRUE)
{
assembly_operand AO;
/* This isn't the start of a statement, but it's safe to
release token texts anyway. Expressions in an array
list are independent of each other. */
release_token_texts();
get_next_token();
if ((token_type == SEP_TT) && (token_value == SEMICOLON_SEP))
continue;
if ((token_type == SEP_TT) && (token_value == CLOSE_SQUARE_SEP))
break;
if ((token_type == SEP_TT) && (token_value == OPEN_SQUARE_SEP))
{ /* Minimal error recovery: we assume that a ] has
been missed, and the programmer is now starting
a new routine */
ebf_curtoken_error("']'");
put_token_back(); break;
}
put_token_back();
AO = parse_expression(ARRAY_CONTEXT);
if (AO.marker == ERROR_MV)
break;
array_entry(i, is_static, AO);
i++;
}
}
finish_array(i, is_static);
if (debugfile_switch)
{
int32 new_area_size;
char *global_name = current_array_name.data;
debug_file_printf("<array>");
debug_file_printf("<identifier>%s</identifier>", global_name);
debug_file_printf("<value>");
write_debug_array_backpatch(symbols[global_symbol].value);
debug_file_printf("</value>");
new_area_size = (!is_static ? dynamic_array_area_size : static_array_area_size);
debug_file_printf
("<byte-count>%d</byte-count>",
new_area_size - array_base);
debug_file_printf
("<bytes-per-element>%d</bytes-per-element>",
array_entry_size);
debug_file_printf
("<zeroth-element-holds-length>%s</zeroth-element-holds-length>",
(array_type == STRING_ARRAY || array_type == TABLE_ARRAY) ?
"true" : "false");
get_next_token();
write_debug_locations(get_token_location_end(beginning_debug_location));
put_token_back();
debug_file_printf("</array>");
}
if ((array_type==BYTE_ARRAY) || (array_type==WORD_ARRAY)) i--;
if (array_type==BUFFER_ARRAY) i+=WORDSIZE-1;
arrays[no_arrays++].size = i;
}
extern int32 begin_table_array(void)
{
/* The "box" statement needs to be able to construct table
arrays of strings like this. (Static data, but we create a dynamic
array for maximum backwards compatibility.) */
array_base = dynamic_array_area_size;
array_entry_size = WORDSIZE;
/* Leave room to write the array size in later */
dynamic_array_area_size += array_entry_size;
return array_base;
}
extern int32 begin_word_array(void)
{
/* The "random(a, b, ...)" function needs to be able to construct
word arrays like this. (Static data, but we create a dynamic
array for maximum backwards compatibility.) */
array_base = dynamic_array_area_size;
array_entry_size = WORDSIZE;
return array_base;
}
/* ========================================================================= */
/* Data structure management routines */
/* ------------------------------------------------------------------------- */
extern void init_arrays_vars(void)
{ dynamic_array_area = NULL;
static_array_area = NULL;
arrays = NULL;
global_initial_value = NULL;
variables = NULL;
if (!glulx_mode) {
if (ZCODE_COMPACT_GLOBALS == 0) {
/* The traditional layout for Z-code globals is that the
built-ins are numbered from 255 down to 249. User
globals run from 16 to 248. */
globalv_z_temp_var1 = 255;
globalv_z_temp_var2 = 254;
globalv_z_temp_var3 = 253;
globalv_z_temp_var4 = 252;
globalv_z_self = 251;
globalv_z_sender = 250;
globalv_z_sw__var = 249;
zcode_user_global_start_no = 0;
zcode_highest_allowed_global = 249;
}
else {
/* In the compact arrangement, the built-ins are numbered
16-22... */
zcode_highest_allowed_global = 256;
if (version_number > 3) {
globalv_z_temp_var1 = 16;
globalv_z_temp_var2 = 17;
globalv_z_temp_var3 = 18;
globalv_z_temp_var4 = 19;
globalv_z_self = 20;
globalv_z_sender = 21;
globalv_z_sw__var = 22;
zcode_user_global_start_no = 7;
}
else {
/* ...Except that in version 3, the first three globals are
hard-wired to the status line (displaying the location,
moves, and score). So the built-ins are 19-25;
user globals are 16-18 and then 26+. Yes, it's messy. */
globalv_z_temp_var1 = 19;
globalv_z_temp_var2 = 20;
globalv_z_temp_var3 = 21;
globalv_z_temp_var4 = 22;
globalv_z_self = 23;
globalv_z_sender = 24;
globalv_z_sw__var = 25;
zcode_user_global_start_no = 0;
}
}
}
else {
/* These are not used in Glulx. */
globalv_z_temp_var1 = -1;
globalv_z_temp_var2 = -1;
globalv_z_temp_var3 = -1;
globalv_z_temp_var4 = -1;
globalv_z_self = -1;
globalv_z_sender = -1;
globalv_z_sw__var = -1;
zcode_user_global_start_no = -1;
zcode_highest_allowed_global = -1;
}
}
extern void arrays_begin_pass(void)
{
int ix, totalvar;
no_arrays = 0;
if (!glulx_mode) {
no_globals = zcode_user_global_start_no;
/* The compiler-defined globals start at 239 and go down...
well, they might or might not. We'll just initialize the
entire globals list. */
totalvar = MAX_ZCODE_GLOBAL_VARS;
}
else {
/* The compiler-defined globals run from 0 to 10. */
no_globals = 11;
totalvar = no_globals;
}
ensure_memory_list_available(&global_initial_value_memlist, totalvar);
for (ix=0; ix<totalvar; ix++) {
global_initial_value[ix] = 0;
}
ensure_memory_list_available(&variables_memlist, MAX_LOCAL_VARIABLES+totalvar);
for (ix=0; ix<MAX_LOCAL_VARIABLES+totalvar; ix++) {
variables[ix].token = 0;
variables[ix].usage = FALSE;
}
dynamic_array_area_size = 0;
if (!glulx_mode) {
int ix;
/* This initial segment of dynamic_array_area is never used. It's
notionally space for the global variables, but that data is
kept in the global_initial_value array. Nonetheless, all the
Z-compiler math is set up with the idea that arrays start at
WORDSIZE * MAX_ZCODE_GLOBAL_VARS, so we need the blank segment.
*/
dynamic_array_area_size = WORDSIZE * MAX_ZCODE_GLOBAL_VARS;
ensure_memory_list_available(&dynamic_array_area_memlist, dynamic_array_area_size);
for (ix=0; ix<WORDSIZE * MAX_ZCODE_GLOBAL_VARS; ix++)
dynamic_array_area[ix] = 0;
}
static_array_area_size = 0;
}
extern void arrays_allocate_arrays(void)
{
initialise_memory_list(&dynamic_array_area_memlist,
sizeof(uchar), 10000, (void**)&dynamic_array_area,
"dynamic array data");
initialise_memory_list(&static_array_area_memlist,
sizeof(uchar), 0, (void**)&static_array_area,
"static array data");
initialise_memory_list(&arrays_memlist,
sizeof(arrayinfo), 64, (void**)&arrays,
"array info");
initialise_memory_list(&global_initial_value_memlist,
sizeof(int32), 200, (void**)&global_initial_value,
"global variable values");
initialise_memory_list(¤t_array_name,
sizeof(char), 32, NULL,
"array name currently being defined");
}
extern void arrays_free_arrays(void)
{
deallocate_memory_list(&dynamic_array_area_memlist);
deallocate_memory_list(&static_array_area_memlist);
deallocate_memory_list(&arrays_memlist);
deallocate_memory_list(&global_initial_value_memlist);
deallocate_memory_list(¤t_array_name);
}
/* ========================================================================= */