This repository was archived by the owner on Aug 31, 2021. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 227
Expand file tree
/
Copy pathchunk.cpp
More file actions
2842 lines (2576 loc) · 89.7 KB
/
chunk.cpp
File metadata and controls
2842 lines (2576 loc) · 89.7 KB
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 (C) 2003-2015 LiveCode Ltd.
This file is part of LiveCode.
LiveCode is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License v3 as published by the Free
Software Foundation.
LiveCode is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with LiveCode. If not see <http://www.gnu.org/licenses/>. */
#include "prefix.h"
#include "globdefs.h"
#include "objdefs.h"
#include "parsedef.h"
#include "filedefs.h"
#include "mcio.h"
#include "scriptpt.h"
#include "handler.h"
#include "object.h"
#include "dispatch.h"
#include "stack.h"
#include "aclip.h"
#include "vclip.h"
#include "card.h"
#include "group.h"
#include "button.h"
#include "field.h"
#include "image.h"
#include "graphic.h"
#include "eps.h"
#include "scrolbar.h"
#include "player.h"
#include "sellst.h"
#include "stacklst.h"
#include "cardlst.h"
#include "chunk.h"
#include "mcerror.h"
#include "util.h"
#include "debug.h"
#include "variable.h"
#include "globals.h"
#include "exec.h"
////////////////////////////////////////////////////////////////////////////////
static bool MCChunkTermIsNestable(Chunk_term p_chunk_term)
{
switch (p_chunk_term)
{
case CT_STACK:
case CT_GROUP:
case CT_LAYER:
case CT_ELEMENT:
return true;
default:
return false;
}
}
static bool MCChunkTermHasRange(Chunk_term p_chunk_term)
{
return p_chunk_term >= CT_LINE && p_chunk_term < CT_ELEMENT;
}
////////////////////////////////////////////////////////////////////////////////
#ifdef COLLECTING_CHUNKS
#include "newchunk.h"
class MCSyntaxCollector
{
public:
MCSyntaxCollector(MCScriptPoint& sp, Boolean doingthe, bool p_dest)
: m_sp(sp), m_the(doingthe), m_dest(p_dest)
{
m_start = m_sp . getcurptr();
}
~MCSyntaxCollector(void)
{
m_end = m_sp . getcurptr();
FILE *f;
f = fopen("G:\\Scratch\\Chunks.txt", "a");
if (f != NULL)
{
if (m_dest)
fprintf(f, "C: ");
else
fprintf(f, "E: ");
if (m_the)
fprintf(f, "the ");
for(int32_t i = 0; i < m_end - m_start; ++i)
{
if (m_start[i] == '\\')
{
fputc('\\', f);
fputc('\\', f);
}
else if (m_start[i] == '\n')
{
fputc('\\', f);
fputc('n', f);
}
else
fputc(m_start[i], f);
}
fputc('\n', f);
fclose(f);
}
}
private:
MCScriptPoint& m_sp;
bool m_dest;
Boolean m_the;
const uint1 *m_start;
const uint1 *m_end;
};
#endif
MCCRef::MCCRef()
{
etype = otype = ptype = CT_UNDEFINED;
startpos = endpos = NULL;
next = NULL;
}
MCCRef::~MCCRef()
{
delete startpos;
delete endpos;
}
MCChunk::MCChunk(Boolean isforset)
{
url = stack = background = card = group = object = NULL;
element = NULL;
cline = item = word = token = character = NULL;
paragraph = sentence = trueword = NULL;
codepoint = codeunit = byte = NULL;
source = NULL;
destvar = NULL;
destobj = NULL;
if (isforset)
desttype = DT_ISDEST;
else
desttype = DT_UNDEFINED;
function = F_UNDEFINED;
marked = False;
next = NULL;
// MW-2014-05-28: [[ Bug 11928 ]] We assume (at first) we are not a transient text chunk (i.e. one that is evaluated from a var).
m_transient_text_chunk = false;
}
MCChunk::~MCChunk()
{
delete url;
while (stack != NULL)
{
MCCRef *tptr = stack;
stack = stack->next;
delete tptr;
}
delete background;
delete card;
while(group != NULL)
{
MCCRef *tptr = group;
group = group->next;
delete tptr;
}
while(object != NULL)
{
MCCRef *tptr = object;
object = object->next;
delete tptr;
}
while (element != NULL)
{
MCCRef *tptr = element;
element = element->next;
delete tptr;
}
delete cline;
delete item;
delete word;
delete token;
delete character;
delete codepoint;
delete codeunit;
delete byte;
delete paragraph;
delete sentence;
delete trueword;
delete source;
delete destvar;
}
Parse_stat MCChunk::parse(MCScriptPoint &sp, Boolean doingthe)
{
Symbol_type type;
Boolean need_target = True;
const LT *te;
MCCRef *curref = NULL;
Chunk_term oterm = CT_UNDEFINED;
Chunk_term nterm = CT_UNDEFINED;
Chunk_term lterm = CT_UNDEFINED;
#ifdef COLLECTING_CHUNKS
MCSyntaxCollector collect(sp, doingthe, desttype == DT_ISDEST);
#endif
initpoint(sp);
while (True)
{
if (sp.next(type) != PS_NORMAL)
{
if (need_target)
{
MCperror->add(PE_CHUNK_NOCHUNK, sp);
return PS_ERROR;
}
else
break;
}
if (type == ST_ID)
{
te = NULL;
if (sp.lookup(SP_FACTOR, te) != PS_NORMAL || te->type == TT_PROPERTY)
{
if (need_target)
{
if (desttype == DT_ISDEST && noobjectchunks())
{
MCExpression *newfact = NULL;
// MW-2011-06-22: [[ SERVER ]] Update to use SP findvar method to take into account
// execution outwith a handler.
if (doingthe
|| (sp.findvar(sp.gettoken_nameref(), &destvar) != PS_NORMAL
&& (MCexplicitvariables
|| sp.lookupconstant(&newfact) == PS_NORMAL
|| sp.findnewvar(sp.gettoken_nameref(), kMCEmptyName, &destvar) != PS_NORMAL)))
{
delete newfact;
MCperror->add(PE_CHUNK_NOVARIABLE, sp);
return PS_ERROR;
}
destvar->parsearray(sp);
desttype = DT_VARIABLE;
return PS_NORMAL;
}
else
{
if (doingthe)
sp.backup();
sp.backup();
if (sp.parseexp(True, False, &source) != PS_NORMAL)
{
MCperror->add
(PE_CHUNK_BADEXP, sp);
return PS_ERROR;
}
desttype = DT_EXPRESSION;
}
}
else
sp.backup();
break;
}
switch (te->type)
{
case TT_THE:
// MW-2013-01-17: [[ Bug 10644 ]] If we have a string chunk of a property
// then it should be evaluated as a string. However, if the string chunk
// is of a previously parsed object then we must pass as a dest so the
// object resolves correctly.
if (desttype != DT_ISDEST && !notextchunks() && noobjectchunks())
{
sp.backup();
if (sp.parseexp(True, False, &source) != PS_NORMAL)
{
MCperror->add
(PE_CHUNK_BADEXP, sp);
return PS_ERROR;
}
return PS_NORMAL;
}
doingthe = True;
break;
case TT_PREP:
if (need_target)
{
MCperror->add
(PE_CHUNK_BADPREP, sp);
return PS_ERROR;
}
sp.backup();
return PS_NORMAL;
case TT_TO:
if (curref != NULL && MCChunkTermHasRange(lterm))
{
if (curref->etype != CT_EXPRESSION)
{
MCperror->add
(PE_CHUNK_BADRANGE, sp);
return PS_ERROR;
}
curref->etype = CT_RANGE;
if (sp.parseexp(False, False, &curref->endpos) != PS_NORMAL)
{
MCperror->add
(PE_CHUNK_NOENDEXP, sp);
return PS_ERROR;
}
}
else
{
sp.backup();
return PS_NORMAL;
}
break;
case TT_IN:
if (!need_target)
{
sp.backup();
return PS_NORMAL;
}
break;
case TT_OF:
need_target = True;
break;
case TT_CLASS:
if (te->which != CT_MARKED)
{
MCperror->add
(PE_CHUNK_NOCHUNK, sp);
return PS_ERROR;
}
marked = True;
break;
case TT_CHUNK:
nterm = (Chunk_term)te->which;
// MW-2013-08-05: [[ ThisMe ]] If 'this' is followed by 'me' we become 'this me'.
if (nterm == CT_THIS &&
sp . skip_token(SP_FACTOR, TT_FUNCTION, F_ME) == PS_NORMAL)
{
// Destination type is 'this me' handled in MCChunk::getobj()
desttype = DT_THIS_ME;
// Destination object is the script being compiled
destobj = sp.getobj();
// Nothing can come after 'this me' so return success.
return PS_NORMAL;
}
switch (ct_class(nterm))
{
case CT_ORDINAL:
oterm = nterm;
break;
case CT_TYPES:
// MW-2011-08-08: [[ Bug ]] Allow control ... of control ...
if ((lterm != CT_UNDEFINED && nterm > lterm)
|| (nterm == lterm && !MCChunkTermIsNestable(nterm)))
{
MCperror->add(PE_CHUNK_BADORDER, sp);
return PS_ERROR;
}
curref = new (nothrow) MCCRef;
curref->otype = nterm;
if (curref->otype == CT_BACKGROUND || curref->otype == CT_CARD)
{
Symbol_type itype;
const LT *ite;
if (sp.next(itype) == PS_NORMAL)
{
if (sp.lookup(SP_FACTOR, ite) == PS_NORMAL
&& ite->type == TT_CHUNK
&& ite->which >= CT_LAYER && ite->which <= CT_LAST_CONTROL)
{
curref->ptype = curref->otype;
nterm = curref->otype = (Chunk_term)ite->which;
}
else
sp.backup();
}
}
if (oterm == CT_UNDEFINED)
{
if (sp.skip_token(SP_FACTOR, TT_PROPERTY) == PS_NORMAL)
curref->etype = CT_ID;
else
curref->etype = CT_EXPRESSION;
if (sp.parseexp(curref->otype <= CT_LAST_CONTROL, False,
&curref->startpos) != PS_NORMAL)
{
MCperror->add(PE_CHUNK_NOSTARTEXP, sp);
delete curref;
return PS_ERROR;
}
}
else
{
curref->etype = oterm;
oterm = CT_UNDEFINED;
}
switch (curref->otype)
{
case CT_URL:
case CT_URL_HEADER:
url = curref;
break;
case CT_TOP_LEVEL:
case CT_MODELESS:
case CT_PALETTE:
case CT_MODAL:
case CT_PULLDOWN:
case CT_POPUP:
case CT_OPTION:
case CT_STACK:
if (oterm > CT_STACK)
{
MCperror->add(PE_CHUNK_BADSTACKREF, sp);
delete curref;
return PS_ERROR;
}
curref->next = stack;
stack = curref;
break;
case CT_BACKGROUND:
background = curref;
break;
case CT_CARD:
card = curref;
break;
case CT_GROUP:
curref->next = group;
group = curref;
break;
case CT_LAYER:
// MW-2011-08-08: [[ Bug ]] Chain 'control' chunks allowing things like 'graphic ... of control ...'
// where the latter chunk refers to a group.
curref->next = object;
object = curref;
break;
case CT_AUDIO_CLIP:
case CT_VIDEO_CLIP:
case CT_MENU:
case CT_BUTTON:
case CT_SCROLLBAR:
case CT_PLAYER:
case CT_IMAGE:
case CT_FIELD:
case CT_GRAPHIC:
case CT_EPS:
case CT_COLOR_PALETTE:
case CT_MAGNIFY:
case CT_WIDGET:
object = curref;
break;
case CT_ELEMENT:
// Allow a chain of element chunks
curref -> next = element;
element = curref;
break;
case CT_LINE:
cline = curref;
break;
case CT_PARAGRAPH:
paragraph = curref;
break;
case CT_SENTENCE:
sentence = curref;
break;
case CT_ITEM:
item = curref;
break;
case CT_WORD:
word = curref;
break;
case CT_TRUEWORD:
trueword = curref;
break;
case CT_TOKEN:
token = curref;
break;
case CT_CHARACTER:
character = curref;
break;
case CT_CODEPOINT:
codepoint = curref;
break;
case CT_CODEUNIT:
codeunit = curref;
break;
case CT_BYTE:
byte = curref;
break;
default: /* curref->otype */
fprintf(stderr, "MCChunk: ERROR bad chunk type %d\n", nterm);
break;
}
// All text chunks and the element chunk need a target
if (nterm < CT_LINE)
need_target = False;
lterm = nterm;
break;
default: /* chunk class */
MCperror->add(PE_CHUNK_BADCHUNK, sp);
return PS_ERROR;
}
doingthe = False;
break;
case TT_FUNCTION:
function = (Functions)te->which;
switch (function)
{
case F_CLICK_CHUNK:
case F_CLICK_CHAR_CHUNK:
case F_CLICK_FIELD:
case F_CLICK_LINE:
case F_CLICK_TEXT:
case F_FOUND_CHUNK:
case F_FOUND_FIELD:
case F_FOUND_LINE:
case F_FOUND_TEXT:
case F_SELECTED_CHUNK:
case F_SELECTED_FIELD:
case F_SELECTED_IMAGE:
case F_SELECTED_LINE:
case F_SELECTED_TEXT:
case F_MOUSE_CONTROL:
case F_MOUSE_CHUNK:
case F_MOUSE_CHAR_CHUNK:
case F_MOUSE_LINE:
case F_MOUSE_TEXT:
case F_DRAG_SOURCE:
case F_DRAG_DESTINATION:
case F_DROP_CHUNK:
case F_FOCUSED_OBJECT:
if (desttype == DT_ISDEST)
{ // delete the selectedLine of field x
if (function == F_SELECTED_LINE || function == F_SELECTED_CHUNK)
{}
}
else if (!notextchunks())
{
sp.backup();
if (sp.parseexp(True, False, &source) != PS_NORMAL)
{
MCperror->add(PE_CHUNK_BADEXP, sp);
return PS_ERROR;
}
return PS_NORMAL;
}
desttype = DT_FUNCTION;
break;
case F_ME:
desttype = DT_ME;
destobj = sp.getobj();
break;
case F_MENU_OBJECT:
desttype = DT_MENU_OBJECT;
break;
case F_TARGET:
desttype = DT_TARGET;
break;
// MW-2008-11-05: [[ Owner Reference ]] If we encounter 'the owner of ...' then
// parse the syntax as:
// 'the' owner [ 'of' ] <chunk>
// owner 'of' <chunk>
case F_OWNER:
desttype = DT_OWNER;
if (sp . skip_token(SP_FACTOR, TT_OF) != PS_NORMAL && !doingthe)
{
MCperror -> add(PE_PROPERTY_NOTOF, sp);
return PS_ERROR;
}
source = new (nothrow) MCChunk(False);
if (static_cast<MCChunk *>(source) -> parse(sp, False) != PS_NORMAL)
{
MCperror->add(PE_PROPERTY_BADCHUNK, sp);
return PS_ERROR;
}
return PS_NORMAL;
case F_TEMPLATE_STACK:
case F_TEMPLATE_AUDIO_CLIP:
case F_TEMPLATE_VIDEO_CLIP:
case F_TEMPLATE_GROUP:
case F_TEMPLATE_CARD:
case F_TEMPLATE_BUTTON:
case F_TEMPLATE_FIELD:
case F_TEMPLATE_IMAGE:
case F_TEMPLATE_SCROLLBAR:
case F_TEMPLATE_PLAYER:
case F_TEMPLATE_GRAPHIC:
case F_TEMPLATE_EPS:
desttype = (Dest_type)(te->which - F_TEMPLATE_BUTTON + DT_BUTTON);
break;
case F_SELECTED_OBJECT:
desttype = DT_SELECTED;
break;
case F_TOP_STACK:
desttype = DT_TOP_STACK;
break;
case F_CLICK_STACK:
desttype = DT_CLICK_STACK;
break;
case F_MOUSE_STACK:
desttype = DT_MOUSE_STACK;
break;
default: /* function */
if (need_target && desttype != DT_ISDEST)
{
if (doingthe)
sp.backup();
sp.backup();
if (sp.parseexp(True, False, &source) != PS_NORMAL)
{
MCperror->add(PE_CHUNK_BADEXP, sp);
return PS_ERROR;
}
// MW-2013-06-20: [[ Bug 10966 ]] Make sure we mark the chunk as being of
// 'expression' type. This means 'source' will be evaluated and then parsed
// as a control reference in 'getobj()' context. This has wider implications
// that just 'controlAtLoc()' - it means any function used on the rhs of
// 'of' for properties will now function correctly.
desttype = DT_EXPRESSION;
return PS_NORMAL;
}
else
{
sp.backup();
if (need_target)
return PS_ERROR;
return PS_NORMAL;
}
}
if (sp.skip_token(SP_FACTOR, TT_LPAREN) == PS_NORMAL)
if (sp.skip_token(SP_FACTOR, TT_RPAREN) != PS_NORMAL)
{
MCperror->add
(PE_CHUNK_BADEXP, sp);
return PS_ERROR;
}
return PS_NORMAL;
default: /* factor */
if (need_target)
{
if (!noobjectchunks())
{
MCperror->add
(PE_CHUNK_NOCHUNK, sp);
return PS_ERROR;
}
if (desttype != DT_UNDEFINED)
{
MCperror->add
(PE_CHUNK_BADDEST, sp);
return PS_ERROR;
}
if (doingthe)
sp.backup();
sp.backup();
if (sp.parseexp(True, False, &source) != PS_NORMAL)
{
MCperror->add(PE_CHUNK_BADEXP, sp);
return PS_ERROR;
}
}
else
sp.backup();
return PS_NORMAL;
}
}
else
{ /* token type != ST_ID */
if (need_target)
{
if (!noobjectchunks())
{
MCperror->add(PE_CHUNK_NOCHUNK, sp);
return PS_ERROR;
}
if (desttype != DT_UNDEFINED)
{
MCperror->add(PE_CHUNK_BADDEST, sp);
return PS_ERROR;
}
sp.backup();
if (sp.parseexp(True, True, &source) != PS_NORMAL)
{
MCperror->add(PE_CHUNK_BADEXP, sp);
return PS_ERROR;
}
// MW-2007-07-03: [[ Bug 1925 ]] We have just parsed an expression so set
// the desttype appropriately. This means things such as the foo of (...)
// works correctly.
desttype = DT_EXPRESSION;
}
else
sp.backup();
break;
}
}
return PS_NORMAL;
}
MCVarref *MCChunk::getrootvarref(void)
{
if (destvar != NULL)
return destvar;
if (source != NULL)
return source -> getrootvarref();
return NULL;
}
void MCChunk::take_components(MCChunk *tchunk)
{
if (tchunk->byte != NULL)
{
delete byte;
byte = tchunk->byte;
tchunk->byte = NULL;
}
if (tchunk->codeunit != NULL)
{
delete codeunit;
codeunit = tchunk->codeunit;
tchunk->codeunit = NULL;
}
if (tchunk->codepoint != NULL)
{
delete codepoint;
codepoint = tchunk->codepoint;
tchunk->codepoint = NULL;
}
if (tchunk->character != NULL)
{
delete character;
character = tchunk->character;
tchunk->character = NULL;
}
if (tchunk->token != NULL)
{
delete token;
token = tchunk->token;
tchunk->token = NULL;
}
if (tchunk->word != NULL)
{
delete word;
word = tchunk->word;
tchunk->word = NULL;
}
if (tchunk->trueword != NULL)
{
delete trueword;
trueword = tchunk->trueword;
tchunk->trueword = NULL;
}
if (tchunk->item != NULL)
{
delete item;
item = tchunk->item;
tchunk->item = NULL;
}
if (tchunk->sentence != NULL)
{
delete sentence;
sentence = tchunk->sentence;
tchunk->sentence = NULL;
}
if (tchunk->paragraph != NULL)
{
delete paragraph;
paragraph = tchunk->paragraph;
tchunk->paragraph = NULL;
}
if (tchunk->cline != NULL)
{
delete cline;
cline = tchunk->cline;
tchunk->cline = NULL;
}
// MW-2014-05-28: [[ Bug 11928 ]] As soon as we take components from a chunk then
// mark us as transient text, so that we don't use the same components next time.
m_transient_text_chunk = true;
}
bool MCChunk::getobj(MCExecContext& ctxt, MCObjectPtr& r_object, Boolean p_recurse)
{
r_object . object = nil;
getoptionalobj(ctxt, r_object, p_recurse);
if (r_object . object == nil)
{
ctxt . Throw();
return false;
}
return true;
}
void MCChunk::getoptionalobj(MCExecContext& ctxt, MCObject *&r_object, uint4& r_parid, Boolean p_recurse)
{
MCObjectPtr t_obj_ptr;
getoptionalobj(ctxt, t_obj_ptr, p_recurse);
// ensure that the context does not contain an error until we decide how strict chunk parsing is.
ctxt . IgnoreLastError();
r_object = t_obj_ptr . object;
r_parid = t_obj_ptr . part_id;
}
void MCChunk::getoptionalobj(MCExecContext& ctxt, MCObjectPtr &r_object, Boolean p_recurse)
{
MCObjectPtr t_object;
t_object . object = nil;
t_object . part_id = 0;
r_object . object = nil;
r_object . part_id = 0;
if (desttype != DT_UNDEFINED && desttype != DT_ISDEST)
{
if (desttype == DT_EXPRESSION || desttype == DT_VARIABLE)
{
bool t_error = true;
MCAutoStringRef t_value;
if (p_recurse)
{
if (desttype == DT_EXPRESSION)
ctxt . EvalExprAsStringRef(source, EE_CHUNK_BADOBJECTEXP, &t_value);
else
ctxt . EvalExprAsStringRef(destvar, EE_CHUNK_BADOBJECTEXP, &t_value);
if (ctxt . HasError())
return;
/*
MCAutoValueRef t_value;
ep . copyasvalueref(&t_value);
MCEngineEvalValueAsObject(ctxt, *t_value, t_object);
*/
// SN-2014-04-08 [[ Bug 12147 ]] create button in group command fails
MCScriptPoint sp(ctxt, *t_value);
MCChunk *tchunk = new (nothrow) MCChunk(False);
MCerrorlock++;
Symbol_type type;
if (tchunk->parse(sp, False) == PS_NORMAL
&& sp.next(type) == PS_EOF)
t_error = false;
MCerrorlock--;
if (!t_error)
{
if (tchunk->getobj(ctxt, t_object, False))
take_components(tchunk);
else
t_error= true;
}
delete tchunk;
}
// SN-2013-11-7: If no recurse, there is no error to trigger
// Otherwise, the caller gets a 'marred' context with an error
else
return;
if (t_error)
{
ctxt . LegacyThrow(EE_CHUNK_BADOBJECTEXP, *t_value);
return;
}
}
else if (desttype == DT_OWNER)
{
// MW-2008-11-05: [[ Owner Reference ]] If the desttype is DT_OWNER it means that <source>
// must point to an MCChunk object (as that's how its parsed).
// In this case attempt to evaluate it and then step up one in the ownership chain. Note
// that we can't step higher than a mainstack, so we set objptr to NULL in this case.
if (!static_cast<MCChunk *>(source) -> getobj(ctxt, t_object, True))
{
ctxt . LegacyThrow(EE_CHUNK_BADOBJECTEXP);
return;
}
MCEngineEvalOwnerAsObject(ctxt, t_object, t_object);
}
else if (desttype >= DT_FIRST_OBJECT && desttype < DT_LAST_OBJECT)
{
MCEngineEvalTemplateAsObject(ctxt, desttype, t_object);
}
else
{
switch(desttype)
{
case DT_THIS_ME:
t_object . object = destobj;
t_object . part_id = 0;
break;
case DT_ME:
//MCEngineEvalMeAsObject(ctxt, t_object);
if (ctxt . GetParentScript() == NULL)
{
t_object . object = destobj;
t_object . part_id = 0;
}
else
t_object = ctxt . GetObjectPtr();
break;
case DT_MENU_OBJECT:
MCEngineEvalMenuObjectAsObject(ctxt, t_object);
break;
case DT_TARGET:
MCEngineEvalTargetAsObject(ctxt, t_object);
break;
case DT_ERROR:
MCEngineEvalErrorObjectAsObject(ctxt, t_object);
break;
case DT_SELECTED:
MCInterfaceEvalSelectedObjectAsObject(ctxt, t_object);
break;
case DT_TOP_STACK:
MCInterfaceEvalTopStackAsObject(ctxt, t_object);
break;
case DT_CLICK_STACK:
MCInterfaceEvalClickStackAsObject(ctxt, t_object);
break;
case DT_MOUSE_STACK:
MCInterfaceEvalMouseStackAsObject(ctxt, t_object);
break;
case DT_FUNCTION:
switch (function)
{
case F_CLICK_CHUNK:
case F_CLICK_CHAR_CHUNK:
case F_CLICK_FIELD:
case F_CLICK_LINE:
case F_CLICK_TEXT:
MCInterfaceEvalClickFieldAsObject(ctxt, t_object);
break;
case F_SELECTED_CHUNK:
case F_SELECTED_FIELD:
case F_SELECTED_LINE:
case F_SELECTED_TEXT:
MCInterfaceEvalSelectedFieldAsObject(ctxt, t_object);
break;
case F_SELECTED_IMAGE:
MCInterfaceEvalSelectedImageAsObject(ctxt, t_object);
break;
case F_FOUND_CHUNK:
case F_FOUND_FIELD:
case F_FOUND_LINE:
case F_FOUND_TEXT:
MCInterfaceEvalFoundFieldAsObject(ctxt, t_object);
break;
case F_MOUSE_CONTROL:
case F_MOUSE_CHUNK:
case F_MOUSE_CHAR_CHUNK:
case F_MOUSE_LINE:
case F_MOUSE_TEXT:
MCInterfaceEvalMouseControlAsObject(ctxt, t_object);
break;
case F_FOCUSED_OBJECT:
MCInterfaceEvalFocusedObjectAsObject(ctxt, t_object);
break;
case F_DRAG_SOURCE:
MCPasteboardEvalDragSourceAsObject(ctxt, t_object);
break;
case F_DRAG_DESTINATION:
MCPasteboardEvalDragDestinationAsObject(ctxt, t_object);
break;
case F_DROP_CHUNK:
MCPasteboardEvalDropChunkAsObject(ctxt, t_object);
break;