/
valaccodemethodcallmodule.vala
1026 lines (863 loc) · 41.7 KB
/
valaccodemethodcallmodule.vala
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
/* valaccodemethodcallmodule.vala
*
* Copyright (C) 2006-2010 Jürg Billeter
* Copyright (C) 2006-2008 Raffaele Sandrini
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author:
* Jürg Billeter <j@bitron.ch>
* Raffaele Sandrini <raffaele@sandrini.ch>
*/
using GLib;
public class Vala.CCodeMethodCallModule : CCodeAssignmentModule {
public override void visit_method_call (MethodCall expr) {
// the bare function call
var ccall = new CCodeFunctionCall (get_cvalue (expr.call));
CCodeFunctionCall async_call = null;
CCodeFunctionCall finish_call = null;
Method m = null;
Delegate deleg = null;
List<Parameter> params;
var ma = expr.call as MemberAccess;
var itype = expr.call.value_type;
params = itype.get_parameters ();
if (itype is MethodType) {
assert (ma != null);
m = ((MethodType) itype).method_symbol;
if (!get_ccode_simple_generics (m)) {
check_type_arguments (ma);
}
if (ma.inner != null && ma.inner.value_type is EnumValueType && ((EnumValueType) ma.inner.value_type).get_to_string_method() == m) {
// Enum.VALUE.to_string()
var en = (Enum) ma.inner.value_type.data_type;
ccall.call = new CCodeIdentifier (generate_enum_to_string_function (en));
} else if (context.profile == Profile.POSIX && ma.inner != null && ma.inner.value_type != null && ma.inner.value_type.data_type == string_type.data_type && ma.member_name == "printf") {
ccall.call = new CCodeIdentifier (generate_string_printf_function ());
} else if (expr.is_constructv_chainup) {
ccall.call = new CCodeIdentifier (get_ccode_constructv_name ((CreationMethod) m));
}
} else if (itype is SignalType) {
var sig_type = (SignalType) itype;
if (ma != null && ma.inner is BaseAccess && sig_type.signal_symbol.is_virtual) {
m = sig_type.signal_symbol.default_handler;
} else {
ccall = (CCodeFunctionCall) get_cvalue (expr.call);
}
} else if (itype is ObjectType) {
// constructor
var cl = (Class) ((ObjectType) itype).type_symbol;
m = cl.default_construction_method;
generate_method_declaration (m, cfile);
var real_name = get_ccode_real_name (m);
if (expr.is_constructv_chainup) {
real_name = get_ccode_constructv_name ((CreationMethod) m);
}
ccall = new CCodeFunctionCall (new CCodeIdentifier (real_name));
} else if (itype is StructValueType) {
// constructor
var st = (Struct) ((StructValueType) itype).type_symbol;
m = st.default_construction_method;
generate_method_declaration (m, cfile);
ccall = new CCodeFunctionCall (new CCodeIdentifier (get_ccode_real_name (m)));
} else if (itype is DelegateType) {
deleg = ((DelegateType) itype).delegate_symbol;
}
var in_arg_map = new HashMap<int,CCodeExpression> (direct_hash, direct_equal);
var out_arg_map = in_arg_map;
if (m != null && m.coroutine) {
// async call
async_call = new CCodeFunctionCall (new CCodeIdentifier (get_ccode_name (m)));
finish_call = new CCodeFunctionCall (new CCodeIdentifier (get_ccode_finish_name (m)));
if (ma.inner is BaseAccess) {
CCodeExpression? vcast = null;
if (m.base_method != null) {
unowned Class base_class = (Class) m.base_method.parent_symbol;
vcast = new CCodeFunctionCall (new CCodeIdentifier (get_ccode_class_type_function (base_class)));
((CCodeFunctionCall) vcast).add_argument (new CCodeIdentifier ("%s_parent_class".printf (get_ccode_lower_case_name (current_class))));
} else if (m.base_interface_method != null) {
unowned Interface base_iface = (Interface) m.base_interface_method.parent_symbol;
vcast = get_this_interface_cexpression (base_iface);
}
if (vcast != null) {
async_call.call = new CCodeMemberAccess.pointer (vcast, get_ccode_vfunc_name (m));
finish_call.call = new CCodeMemberAccess.pointer (vcast, get_ccode_finish_vfunc_name (m));
}
}
if (ma.member_name == "begin" && ma.inner.symbol_reference == ma.symbol_reference) {
// no finish call
ccall = async_call;
params = m.get_async_begin_parameters ();
} else if (ma.member_name == "end" && ma.inner.symbol_reference == ma.symbol_reference) {
// no async call
ccall = finish_call;
params = m.get_async_end_parameters ();
} else if (!expr.is_yield_expression) {
// same as .begin, backwards compatible to bindings without async methods
ccall = async_call;
params = m.get_async_begin_parameters ();
} else {
ccall = finish_call;
// output arguments used separately
out_arg_map = new HashMap<int,CCodeExpression> (direct_hash, direct_equal);
// pass GAsyncResult stored in closure to finish function
out_arg_map.set (get_param_pos (get_ccode_async_result_pos (m)), new CCodeMemberAccess.pointer (new CCodeIdentifier ("_data_"), "_res_"));
}
}
if (m is CreationMethod && m.parent_symbol is Class) {
if (context.profile == Profile.GOBJECT) {
if (!((Class) m.parent_symbol).is_compact) {
ccall.add_argument (get_variable_cexpression ("object_type"));
}
} else {
ccall.add_argument (get_this_cexpression ());
}
if (!current_class.is_compact) {
if (current_class != m.parent_symbol) {
// chain up to base class
foreach (DataType base_type in current_class.get_base_types ()) {
if (base_type.data_type is Class) {
List<TypeParameter> type_parameters = null;
if (get_ccode_real_name (m) == "g_object_new") {
// gobject-style chainup
type_parameters = ((Class) base_type.data_type).get_type_parameters ();
}
add_generic_type_arguments (in_arg_map, base_type.get_type_arguments (), expr, true, type_parameters);
break;
}
}
} else {
// chain up to other constructor in same class
int type_param_index = 0;
var cl = (Class) m.parent_symbol;
foreach (TypeParameter type_param in cl.get_type_parameters ()) {
in_arg_map.set (get_param_pos (0.1 * type_param_index + 0.01), new CCodeIdentifier ("%s_type".printf (type_param.name.down ())));
in_arg_map.set (get_param_pos (0.1 * type_param_index + 0.02), new CCodeIdentifier ("%s_dup_func".printf (type_param.name.down ())));
in_arg_map.set (get_param_pos (0.1 * type_param_index + 0.03), new CCodeIdentifier ("%s_destroy_func".printf (type_param.name.down ())));
type_param_index++;
}
}
} else if (current_class.base_class == gsource_type) {
// g_source_new
string class_prefix = get_ccode_lower_case_name (current_class);
var funcs = new CCodeDeclaration ("const GSourceFuncs");
funcs.modifiers = CCodeModifiers.STATIC;
funcs.add_declarator (new CCodeVariableDeclarator ("_source_funcs", new CCodeConstant ("{ %s_real_prepare, %s_real_check, %s_real_dispatch, %s_finalize}".printf (class_prefix, class_prefix, class_prefix, class_prefix))));
ccode.add_statement (funcs);
ccall.add_argument (new CCodeCastExpression (new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, new CCodeIdentifier ("_source_funcs")), "GSourceFuncs *"));
var csizeof = new CCodeFunctionCall (new CCodeIdentifier ("sizeof"));
csizeof.add_argument (new CCodeIdentifier (get_ccode_name (current_class)));
ccall.add_argument (csizeof);
}
} else if (m is CreationMethod && m.parent_symbol is Struct) {
ccall.add_argument (get_this_cexpression ());
} else if (m != null && m.has_type_parameters () && !get_ccode_has_generic_type_parameter (m) && !get_ccode_simple_generics (m) && (ccall != finish_call || expr.is_yield_expression)) {
// generic method
// don't add generic arguments for .end() calls
add_generic_type_arguments (in_arg_map, ma.get_type_arguments (), expr);
}
// the complete call expression, might include casts, comma expressions, and/or assignments
CCodeExpression ccall_expr = ccall;
if (m is ArrayResizeMethod) {
var array_type = (ArrayType) ma.inner.value_type;
in_arg_map.set (get_param_pos (0), new CCodeIdentifier (get_ccode_name (array_type.element_type)));
} else if (m is ArrayMoveMethod) {
requires_array_move = true;
} else if (m is ArrayCopyMethod) {
expr.target_value = copy_value (ma.inner.target_value, expr);
return;
}
CCodeExpression instance = null;
if (m != null && m.is_async_callback) {
if (current_method.closure) {
var block = ((Method) m.parent_symbol).body;
instance = new CCodeMemberAccess.pointer (get_variable_cexpression ("_data%d_".printf (get_block_id (block))), "_async_data_");
} else {
instance = new CCodeIdentifier ("_data_");
}
in_arg_map.set (get_param_pos (get_ccode_instance_pos (m)), instance);
out_arg_map.set (get_param_pos (get_ccode_instance_pos (m)), instance);
} else if (m != null && m.binding == MemberBinding.INSTANCE && !(m is CreationMethod)) {
var instance_value = ma.inner.target_value;
if ((ma.member_name == "begin" || ma.member_name == "end") && ma.inner.symbol_reference == ma.symbol_reference) {
var inner_ma = (MemberAccess) ma.inner;
instance_value = inner_ma.inner.target_value;
}
instance = get_cvalue_ (instance_value);
var st = m.parent_symbol as Struct;
if (st != null && !st.is_simple_type ()) {
// we need to pass struct instance by reference
if (!get_lvalue (instance_value)) {
instance_value = store_temp_value (instance_value, expr);
}
instance = new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, get_cvalue_ (instance_value));
}
if (expr.is_yield_expression) {
in_arg_map.set (get_param_pos (get_ccode_instance_pos (m)), instance);
if (get_ccode_finish_instance (m)) {
out_arg_map.set (get_param_pos (get_ccode_instance_pos (m)), instance);
}
} else if (ma.member_name != "end" || get_ccode_finish_instance (m)) {
out_arg_map.set (get_param_pos (get_ccode_instance_pos (m)), instance);
in_arg_map.set (get_param_pos (get_ccode_instance_pos (m)), instance);
}
} else if (m != null && m.binding == MemberBinding.CLASS) {
var cl = (Class) m.parent_symbol;
var cast = new CCodeFunctionCall (new CCodeIdentifier (get_ccode_class_type_function (cl)));
CCodeExpression klass;
if (ma.inner == null) {
if (get_this_type () == null) {
// Accessing the method from a static or class constructor
klass = new CCodeIdentifier ("klass");
} else {
// Accessing the method from within an instance method
var k = new CCodeFunctionCall (new CCodeIdentifier ("G_OBJECT_GET_CLASS"));
k.add_argument (get_this_cexpression ());
klass = k;
}
} else {
// Accessing the method of an instance
var k = new CCodeFunctionCall (new CCodeIdentifier ("G_OBJECT_GET_CLASS"));
k.add_argument (get_cvalue (ma.inner));
klass = k;
}
cast.add_argument (klass);
in_arg_map.set (get_param_pos (get_ccode_instance_pos (m)), cast);
out_arg_map.set (get_param_pos (get_ccode_instance_pos (m)), cast);
}
if (m != null && get_ccode_has_generic_type_parameter (m)) {
// insert type argument for macros
if (m.has_type_parameters ()) {
// generic method
int type_param_index = 0;
foreach (var type_arg in ma.get_type_arguments ()) {
// real structs are passed by reference for simple generics
if (get_ccode_simple_generics (m) && type_arg.is_real_struct_type () && !type_arg.nullable && !(type_arg is PointerType)) {
type_arg = new PointerType (type_arg);
}
in_arg_map.set (get_param_pos (get_ccode_generic_type_pos (m) + 0.01 * type_param_index), new CCodeIdentifier (get_ccode_name (type_arg)));
type_param_index++;
}
} else {
// method in generic type
int type_param_index = 0;
foreach (var type_arg in ma.inner.value_type.get_type_arguments ()) {
in_arg_map.set (get_param_pos (get_ccode_generic_type_pos (m) + 0.01 * type_param_index), new CCodeIdentifier (get_ccode_name (type_arg)));
type_param_index++;
}
}
}
if (m is ArrayMoveMethod) {
var array_type = (ArrayType) ma.inner.value_type;
var csizeof = new CCodeFunctionCall (new CCodeIdentifier ("sizeof"));
csizeof.add_argument (new CCodeIdentifier (get_ccode_name (array_type.element_type)));
in_arg_map.set (get_param_pos (0.1), csizeof);
} else if (m is DynamicMethod) {
emit_context.push_symbol (m);
m.clear_parameters ();
int param_nr = 1;
foreach (Expression arg in expr.get_argument_list ()) {
var unary = arg as UnaryExpression;
if (unary != null && unary.operator == UnaryOperator.OUT) {
// out argument
var param = new Parameter ("param%d".printf (param_nr), unary.inner.value_type);
param.direction = ParameterDirection.OUT;
m.add_parameter (param);
} else if (unary != null && unary.operator == UnaryOperator.REF) {
// ref argument
var param = new Parameter ("param%d".printf (param_nr), unary.inner.value_type);
param.direction = ParameterDirection.REF;
m.add_parameter (param);
} else {
// in argument
m.add_parameter (new Parameter ("param%d".printf (param_nr), arg.value_type));
}
param_nr++;
}
foreach (Parameter param in m.get_parameters ()) {
param.accept (this);
}
generate_dynamic_method_wrapper ((DynamicMethod) m);
emit_context.pop_symbol ();
} else if (m is CreationMethod && context.profile == Profile.GOBJECT && m.parent_symbol is Class) {
ccode.add_assignment (get_this_cexpression (), new CCodeCastExpression (ccall, get_ccode_name (current_class) + "*"));
if (current_method.body.captured) {
// capture self after setting it
var ref_call = new CCodeFunctionCall (get_dup_func_expression (new ObjectType (current_class), expr.source_reference));
ref_call.add_argument (get_this_cexpression ());
ccode.add_assignment (new CCodeMemberAccess.pointer (get_variable_cexpression ("_data%d_".printf (get_block_id (current_method.body))), "self"), ref_call);
}
if (!current_class.is_compact && current_class.has_type_parameters ()) {
/* type, dup func, and destroy func fields for generic types */
var suffices = new string[] {"type", "dup_func", "destroy_func"};
foreach (TypeParameter type_param in current_class.get_type_parameters ()) {
var priv_access = new CCodeMemberAccess.pointer (new CCodeIdentifier ("self"), "priv");
foreach (string suffix in suffices) {
var param_name = new CCodeIdentifier ("%s_%s".printf (type_param.name.down (), suffix));
ccode.add_assignment (new CCodeMemberAccess.pointer (priv_access, param_name.name), param_name);
}
}
}
// object chainup can't be used as expression
ccall_expr = null;
}
bool ellipsis = false;
int i = 1;
int arg_pos;
Iterator<Parameter> params_it = params.iterator ();
foreach (Expression arg in expr.get_argument_list ()) {
CCodeExpression cexpr = get_cvalue (arg);
var carg_map = in_arg_map;
Parameter? param = null;
if (params_it.next ()) {
param = params_it.get ();
ellipsis = param.params_array || param.ellipsis;
}
if (param != null && !ellipsis) {
if (param.direction == ParameterDirection.OUT) {
carg_map = out_arg_map;
}
var unary = arg as UnaryExpression;
if (unary == null || unary.operator != UnaryOperator.OUT) {
if (get_ccode_array_length (param) && param.variable_type is ArrayType && !((ArrayType) param.variable_type).fixed_length) {
var array_type = (ArrayType) param.variable_type;
var length_ctype = get_ccode_array_length_type (param) ?? get_ccode_array_length_type (array_type);
if (unary != null && unary.operator == UnaryOperator.REF) {
length_ctype = "%s*".printf (length_ctype);
}
for (int dim = 1; dim <= array_type.rank; dim++) {
var array_length_expr = new CCodeCastExpression (get_array_length_cexpression (arg, dim), length_ctype);
carg_map.set (get_param_pos (get_ccode_array_length_pos (param) + 0.01 * dim), array_length_expr);
}
} else if (param.variable_type is DelegateType) {
var deleg_type = (DelegateType) param.variable_type;
if (deleg_type.delegate_symbol.has_target) {
CCodeExpression delegate_target_destroy_notify;
var delegate_target = get_delegate_target_cexpression (arg, out delegate_target_destroy_notify);
assert (delegate_target != null);
if (get_ccode_type (param) == "GClosure*") {
// one single GClosure parameter
var closure_new = new CCodeFunctionCall (new CCodeIdentifier ("g_cclosure_new"));
closure_new.add_argument (new CCodeCastExpression (cexpr, "GCallback"));
closure_new.add_argument (delegate_target);
closure_new.add_argument (new CCodeCastExpression (delegate_target_destroy_notify, "GClosureNotify"));
cexpr = new CCodeConditionalExpression (new CCodeBinaryExpression (CCodeBinaryOperator.EQUALITY, cexpr, new CCodeIdentifier ("NULL")), new CCodeIdentifier ("NULL"), closure_new);
} else {
carg_map.set (get_param_pos (get_ccode_delegate_target_pos (param)), delegate_target);
if (deleg_type.is_disposable ()) {
assert (delegate_target_destroy_notify != null);
carg_map.set (get_param_pos (get_ccode_delegate_target_pos (param) + 0.01), delegate_target_destroy_notify);
}
}
}
} else if (param.variable_type is MethodType) {
// callbacks in dynamic method calls
CCodeExpression delegate_target_destroy_notify;
carg_map.set (get_param_pos (get_ccode_delegate_target_pos (param)), get_delegate_target_cexpression (arg, out delegate_target_destroy_notify));
} else if (param.variable_type is GenericType) {
if (m != null && get_ccode_simple_generics (m)) {
var generic_type = (GenericType) param.variable_type;
int type_param_index = m.get_type_parameter_index (generic_type.type_parameter.name);
var type_arg = ma.get_type_arguments ().get (type_param_index);
if (param.variable_type.value_owned) {
if (requires_copy (type_arg)) {
carg_map.set (get_param_pos (get_ccode_destroy_notify_pos (param)), get_destroy_func_expression (type_arg));
} else {
carg_map.set (get_param_pos (get_ccode_destroy_notify_pos (param)), new CCodeConstant ("NULL"));
}
}
}
}
cexpr = handle_struct_argument (param, arg, cexpr);
} else {
arg.target_value = null;
var temp_var = get_temp_variable (param.variable_type, param.variable_type.value_owned, null, true);
emit_temp_var (temp_var);
set_cvalue (arg, get_variable_cexpression (temp_var.name));
arg.target_value.value_type = arg.target_type;
cexpr = new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, get_cvalue (arg));
if (get_ccode_array_length (param) && param.variable_type is ArrayType && !((ArrayType) param.variable_type).fixed_length) {
var array_type = (ArrayType) param.variable_type;
var length_ctype = get_ccode_array_length_type (param) ?? get_ccode_array_length_type (array_type);
for (int dim = 1; dim <= array_type.rank; dim++) {
var temp_array_length = get_temp_variable (new CType (length_ctype, "0"), true, null, true);
emit_temp_var (temp_array_length);
append_array_length (arg, get_variable_cexpression (temp_array_length.name));
carg_map.set (get_param_pos (get_ccode_array_length_pos (param) + 0.01 * dim), new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, get_array_lengths (arg).get (dim - 1)));
}
} else if (param.variable_type is DelegateType) {
var deleg_type = (DelegateType) param.variable_type;
if (deleg_type.delegate_symbol.has_target) {
temp_var = get_temp_variable (new PointerType (new VoidType ()), true, null, true);
emit_temp_var (temp_var);
set_delegate_target (arg, get_variable_cexpression (temp_var.name));
carg_map.set (get_param_pos (get_ccode_delegate_target_pos (param)), new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, get_delegate_target (arg)));
if (deleg_type.is_disposable ()) {
temp_var = get_temp_variable (gdestroynotify_type, true, null, true);
emit_temp_var (temp_var);
set_delegate_target_destroy_notify (arg, get_variable_cexpression (temp_var.name));
carg_map.set (get_param_pos (get_ccode_delegate_target_pos (param) + 0.01), new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, get_delegate_target_destroy_notify (arg)));
}
}
}
}
if (get_ccode_type (param) != null) {
cexpr = new CCodeCastExpression (cexpr, get_ccode_type (param));
}
} else {
// ellipsis arguments
var unary = arg as UnaryExpression;
if (ellipsis && unary != null && unary.operator == UnaryOperator.OUT) {
carg_map = out_arg_map;
arg.target_value = null;
// infer type and ownership from argument expression
var temp_var = get_temp_variable (arg.value_type, arg.value_type.value_owned, null, true);
emit_temp_var (temp_var);
set_cvalue (arg, get_variable_cexpression (temp_var.name));
arg.target_value.value_type = arg.value_type;
cexpr = new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, get_cvalue (arg));
} else {
cexpr = handle_struct_argument (null, arg, cexpr);
}
}
arg_pos = get_param_pos (param != null ? get_ccode_pos (param) : i, ellipsis);
carg_map.set (arg_pos, cexpr);
if (arg is NamedArgument && ellipsis) {
var named_arg = (NamedArgument) arg;
string name = string.joinv ("-", named_arg.name.split ("_"));
carg_map.set (get_param_pos (i - 0.1, ellipsis), new CCodeConstant ("\"%s\"".printf (name)));
}
i++;
}
if (params_it.next ()) {
var param = params_it.get ();
/* if there are more parameters than arguments,
* the additional parameter is an ellipsis parameter
* otherwise there is a bug in the semantic analyzer
*/
assert (param.params_array || param.ellipsis);
ellipsis = true;
}
/* add length argument for methods returning arrays */
if (m != null && m.return_type is ArrayType && async_call != ccall) {
var array_type = (ArrayType) m.return_type;
for (int dim = 1; dim <= array_type.rank; dim++) {
if (get_ccode_array_null_terminated (m)) {
// handle calls to methods returning null-terminated arrays
var temp_var = get_temp_variable (itype.get_return_type (), true, null, false);
var temp_ref = get_variable_cexpression (temp_var.name);
emit_temp_var (temp_var);
ccall_expr = new CCodeAssignment (temp_ref, ccall_expr);
requires_array_length = true;
var len_call = new CCodeFunctionCall (new CCodeIdentifier ("_vala_array_length"));
len_call.add_argument (temp_ref);
append_array_length (expr, len_call);
} else if (get_ccode_array_length (m)) {
var length_ctype = get_ccode_array_length_type (m) ?? get_ccode_array_length_type (array_type);
var temp_var = get_temp_variable (new CType (length_ctype, "0"), true, null, true);
var temp_ref = get_variable_cexpression (temp_var.name);
emit_temp_var (temp_var);
out_arg_map.set (get_param_pos (get_ccode_array_length_pos (m) + 0.01 * dim), new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, temp_ref));
append_array_length (expr, temp_ref);
} else if (get_ccode_array_length_expr (m) != null) {
append_array_length (expr, new CCodeConstant (get_ccode_array_length_expr (m)));
} else {
append_array_length (expr, new CCodeConstant ("-1"));
}
}
} else if (m != null && m.return_type is DelegateType && async_call != ccall) {
var deleg_type = (DelegateType) m.return_type;
if (deleg_type.delegate_symbol.has_target) {
var temp_var = get_temp_variable (new PointerType (new VoidType ()), true, null, true);
var temp_ref = get_variable_cexpression (temp_var.name);
emit_temp_var (temp_var);
out_arg_map.set (get_param_pos (get_ccode_delegate_target_pos (m)), new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, temp_ref));
set_delegate_target (expr, temp_ref);
if (deleg_type.is_disposable ()) {
temp_var = get_temp_variable (gdestroynotify_type, true, null, true);
temp_ref = get_variable_cexpression (temp_var.name);
emit_temp_var (temp_var);
out_arg_map.set (get_param_pos (get_ccode_delegate_target_pos (m) + 0.01), new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, temp_ref));
set_delegate_target_destroy_notify (expr, temp_ref);
} else {
set_delegate_target_destroy_notify (expr, new CCodeConstant ("NULL"));
}
} else {
set_delegate_target (expr, new CCodeConstant ("NULL"));
}
}
// add length argument for delegates returning arrays
// TODO: avoid code duplication with methods returning arrays, see above
if (deleg != null && deleg.return_type is ArrayType) {
var array_type = (ArrayType) deleg.return_type;
for (int dim = 1; dim <= array_type.rank; dim++) {
if (get_ccode_array_null_terminated (deleg)) {
// handle calls to methods returning null-terminated arrays
var temp_var = get_temp_variable (itype.get_return_type (), true, null, false);
var temp_ref = get_variable_cexpression (temp_var.name);
emit_temp_var (temp_var);
ccall_expr = new CCodeAssignment (temp_ref, ccall_expr);
requires_array_length = true;
var len_call = new CCodeFunctionCall (new CCodeIdentifier ("_vala_array_length"));
len_call.add_argument (temp_ref);
append_array_length (expr, len_call);
} else if (get_ccode_array_length (deleg)) {
var temp_var = get_temp_variable (array_type.length_type, true, null, true);
var temp_ref = get_variable_cexpression (temp_var.name);
emit_temp_var (temp_var);
out_arg_map.set (get_param_pos (get_ccode_array_length_pos (deleg) + 0.01 * dim), new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, temp_ref));
append_array_length (expr, temp_ref);
} else {
append_array_length (expr, new CCodeConstant ("-1"));
}
}
} else if (deleg != null && deleg.return_type is DelegateType) {
var deleg_type = (DelegateType) deleg.return_type;
if (deleg_type.delegate_symbol.has_target) {
var temp_var = get_temp_variable (new PointerType (new VoidType ()), true, null, true);
var temp_ref = get_variable_cexpression (temp_var.name);
emit_temp_var (temp_var);
out_arg_map.set (get_param_pos (get_ccode_delegate_target_pos (deleg)), new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, temp_ref));
set_delegate_target (expr, temp_ref);
if (deleg_type.is_disposable ()) {
temp_var = get_temp_variable (gdestroynotify_type, true, null, true);
temp_ref = get_variable_cexpression (temp_var.name);
emit_temp_var (temp_var);
out_arg_map.set (get_param_pos (get_ccode_delegate_target_pos (deleg) + 0.01), new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, temp_ref));
set_delegate_target_destroy_notify (expr, temp_ref);
}
}
}
if (m != null && m.coroutine) {
if (expr.is_yield_expression) {
// asynchronous call
in_arg_map.set (get_param_pos (-1), new CCodeIdentifier (generate_ready_function (current_method)));
in_arg_map.set (get_param_pos (-0.9), new CCodeIdentifier ("_data_"));
}
}
if (expr.tree_can_fail) {
// method can fail
current_method_inner_error = true;
// add &inner_error before the ellipsis arguments
out_arg_map.set (get_param_pos (get_ccode_error_pos ((Callable) m ?? deleg)), new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, get_inner_error_cexpression ()));
} else if (m != null && m.has_error_type_parameter () && async_call != ccall) {
// inferred error argument from base method
out_arg_map.set (get_param_pos (get_ccode_error_pos (m)), new CCodeConstant ("NULL"));
}
if (ellipsis) {
/* ensure variable argument list ends with NULL
* except when using printf-style arguments */
if (m == null) {
in_arg_map.set (get_param_pos (-1, true), new CCodeConstant ("NULL"));
} else if (!m.printf_format && !m.scanf_format && get_ccode_sentinel (m) != "" && !expr.is_constructv_chainup) {
in_arg_map.set (get_param_pos (-1, true), new CCodeConstant (get_ccode_sentinel (m)));
}
}
if (itype is DelegateType) {
var deleg_type = (DelegateType) itype;
var d = deleg_type.delegate_symbol;
if (d.has_target) {
CCodeExpression delegate_target_destroy_notify;
in_arg_map.set (get_param_pos (get_ccode_instance_pos (d)), get_delegate_target_cexpression (expr.call, out delegate_target_destroy_notify));
out_arg_map.set (get_param_pos (get_ccode_instance_pos (d)), get_delegate_target_cexpression (expr.call, out delegate_target_destroy_notify));
}
}
// structs are returned via out parameter
bool return_result_via_out_param = itype.get_return_type ().is_real_non_null_struct_type ();
// pass address for the return value of non-void signals without emitter functions
if (itype is SignalType && !(itype.get_return_type () is VoidType)) {
var sig = ((SignalType) itype).signal_symbol;
if (ma != null && ma.inner is BaseAccess && sig.is_virtual) {
// normal return value for base access
} else if (!get_ccode_has_emitter (sig) || ma.source_reference.file == sig.source_reference.file) {
return_result_via_out_param = true;
}
}
if (async_call == ccall) {
// skip out parameter for .begin() calls
return_result_via_out_param = false;
}
CCodeExpression out_param_ref = null;
if (return_result_via_out_param) {
var out_param_var = get_temp_variable (itype.get_return_type (), true, null, true);
out_param_ref = get_variable_cexpression (out_param_var.name);
emit_temp_var (out_param_var);
out_arg_map.set (get_param_pos (-3), new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, out_param_ref));
}
// append C arguments in the right order
int last_pos;
int min_pos;
if (async_call != ccall) {
// don't append out arguments for .begin() calls
last_pos = -1;
while (true) {
min_pos = -1;
foreach (int pos in out_arg_map.get_keys ()) {
if (pos > last_pos && (min_pos == -1 || pos < min_pos)) {
min_pos = pos;
}
}
if (min_pos == -1) {
break;
}
ccall.add_argument (out_arg_map.get (min_pos));
last_pos = min_pos;
}
}
if (async_call != null) {
last_pos = -1;
while (true) {
min_pos = -1;
foreach (int pos in in_arg_map.get_keys ()) {
if (pos > last_pos && (min_pos == -1 || pos < min_pos)) {
min_pos = pos;
}
}
if (min_pos == -1) {
break;
}
async_call.add_argument (in_arg_map.get (min_pos));
last_pos = min_pos;
}
}
if (expr.is_yield_expression) {
// set state before calling async function to support immediate callbacks
int state = emit_context.next_coroutine_state++;
ccode.add_assignment (new CCodeMemberAccess.pointer (new CCodeIdentifier ("_data_"), "_state_"), new CCodeConstant (state.to_string ()));
ccode.add_expression (async_call);
ccode.add_return (new CCodeConstant ("FALSE"));
ccode.add_label ("_state_%d".printf (state));
}
if (expr.is_assert) {
string message = ((string) expr.source_reference.begin.pos).substring (0, (int) (expr.source_reference.end.pos - expr.source_reference.begin.pos));
ccall.call = new CCodeIdentifier ("_vala_assert");
ccall.add_argument (new CCodeConstant ("\"%s\"".printf (message.replace ("\n", " ").escape (""))));
requires_assert = true;
}
if (return_result_via_out_param) {
ccode.add_expression (ccall_expr);
ccall_expr = out_param_ref;
}
if (m != null && m.binding == MemberBinding.INSTANCE && m.returns_modified_pointer) {
if (ma != null && ma.inner.symbol_reference is Property && ma.inner is MemberAccess) {
var prop = (Property) ma.inner.symbol_reference;
store_property (prop, ((MemberAccess) ma.inner).inner, new GLibValue (expr.value_type, ccall_expr));
ccall_expr = null;
} else {
ccall_expr = new CCodeAssignment (instance, ccall_expr);
}
}
// real structs are passed by reference for simple generics
if (m != null && get_ccode_simple_generics (m) && m.return_type is GenericType
&& expr.value_type.is_real_struct_type () && !expr.value_type.nullable && !(expr.value_type is PointerType)) {
ccall_expr = new CCodeUnaryExpression (CCodeUnaryOperator.POINTER_INDIRECTION, new CCodeParenthesizedExpression (ccall_expr));
}
if (m != null && get_ccode_type (m) != null && get_ccode_type (m) != get_ccode_name (m.return_type)) {
// Bug 699956: Implement cast for method return type if [CCode type=] annotation is specified
ccall_expr = new CCodeCastExpression (ccall_expr, get_ccode_name (m.return_type));
}
if (m is ArrayResizeMethod) {
// FIXME: size expression must not be evaluated twice at runtime (potential side effects)
Iterator<Expression> arg_it = expr.get_argument_list ().iterator ();
arg_it.next ();
var new_size = get_cvalue (arg_it.get ());
var temp_decl = get_temp_variable (int_type);
var temp_ref = get_variable_cexpression (temp_decl.name);
emit_temp_var (temp_decl);
/* memset needs string.h */
cfile.add_include ("string.h");
var clen = get_array_length_cexpression (ma.inner, 1);
var celems = get_cvalue (ma.inner);
var array_type = (ArrayType) ma.inner.value_type;
var csizeof = new CCodeIdentifier ("sizeof (%s)".printf (get_ccode_name (array_type.element_type)));
var cdelta = new CCodeBinaryExpression (CCodeBinaryOperator.MINUS, temp_ref, clen);
var ccheck = new CCodeBinaryExpression (CCodeBinaryOperator.GREATER_THAN, temp_ref, clen);
var czero = new CCodeFunctionCall (new CCodeIdentifier ("memset"));
czero.add_argument (new CCodeBinaryExpression (CCodeBinaryOperator.PLUS, celems, clen));
czero.add_argument (new CCodeConstant ("0"));
czero.add_argument (new CCodeBinaryExpression (CCodeBinaryOperator.MUL, csizeof, cdelta));
ccode.add_assignment (temp_ref, new_size);
ccode.add_expression (ccall_expr);
ccode.add_expression (new CCodeConditionalExpression (ccheck, czero, new CCodeConstant ("NULL")));
ccode.add_assignment (get_array_length_cexpression (ma.inner, 1), temp_ref);
var array_var = ma.inner.symbol_reference;
var array_local = array_var as LocalVariable;
if (array_var != null && array_var.is_internal_symbol ()
&& ((array_var is LocalVariable && !array_local.captured) || array_var is Field)) {
ccode.add_assignment (get_array_size_cvalue (ma.inner.target_value), temp_ref);
}
return;
}
if (expr.parent_node is ExpressionStatement && !expr.value_type.is_disposable ()) {
if (ccall_expr != null && !return_result_via_out_param) {
ccode.add_expression (ccall_expr);
}
} else {
var result_type = itype.get_return_type ();
if (expr.formal_value_type is GenericType && !(expr.value_type is GenericType)) {
var type_parameter = ((GenericType) expr.formal_value_type).type_parameter;
var st = type_parameter.parent_symbol.parent_symbol as Struct;
if (type_parameter.parent_symbol == garray_type ||
(st != null && get_ccode_name (st) == "va_list")) {
// GArray and va_list don't use pointer-based generics
// above logic copied from visit_expression ()
// TODO avoid code duplication
result_type = expr.value_type;
}
}
if (m != null && m.get_format_arg_index () >= 0) {
set_cvalue (expr, ccall_expr);
} else if (m != null && m.get_attribute_bool ("CCode", "use_inplace", false)) {
set_cvalue (expr, ccall_expr);
} else if (!return_result_via_out_param
&& !has_ref_out_argument (expr)
&& (result_type is ValueType && !result_type.is_disposable ())) {
set_cvalue (expr, ccall_expr);
} else if (!return_result_via_out_param) {
var temp_var = get_temp_variable (result_type, result_type.value_owned, null, false);
var temp_ref = get_variable_cexpression (temp_var.name);
emit_temp_var (temp_var);
ccode.add_assignment (temp_ref, ccall_expr);
set_cvalue (expr, temp_ref);
((GLibValue) expr.target_value).lvalue = true;
} else {
set_cvalue (expr, ccall_expr);
((GLibValue) expr.target_value).lvalue = true;
}
}
params_it = params.iterator ();
foreach (Expression arg in expr.get_argument_list ()) {
Parameter param = null;
if (params_it.next ()) {
param = params_it.get ();
}
var unary = arg as UnaryExpression;
if (unary == null || unary.operator != UnaryOperator.OUT) {
continue;
}
if (requires_destroy (unary.inner.value_type)) {
// unref old value
ccode.add_expression (destroy_value (unary.inner.target_value));
}
// infer type of out-parameter from argument
if (ma.symbol_reference is DynamicMethod && unary.target_value.value_type == null) {
unary.target_value.value_type = unary.inner.value_type.copy ();
}
// assign new value
store_value (unary.inner.target_value, transform_value (unary.target_value, unary.inner.value_type, arg), expr.source_reference);
// handle out null terminated arrays
if (param != null && get_ccode_array_null_terminated (param)) {
requires_array_length = true;
var len_call = new CCodeFunctionCall (new CCodeIdentifier ("_vala_array_length"));
len_call.add_argument (get_cvalue_ (unary.inner.target_value));
ccode.add_assignment (get_array_length_cvalue (unary.inner.target_value, 1), len_call);
}
}
if (m is CreationMethod && m.parent_symbol is Class && ((current_class.is_compact && current_class.base_class != null) || current_class.base_class == gsource_type)) {
var cinitcall = new CCodeFunctionCall (new CCodeIdentifier ("%s_instance_init".printf (get_ccode_lower_case_name (current_class, null))));
cinitcall.add_argument (get_this_cexpression ());
if (!current_class.is_compact) {
cinitcall.add_argument (new CCodeConstant ("NULL"));
}
ccode.add_expression (cinitcall);
}
}
private string generate_enum_to_string_function (Enum en) {
var to_string_func = "_%s_to_string".printf (get_ccode_lower_case_name (en));
if (!add_wrapper (to_string_func)) {
// wrapper already defined
return to_string_func;
}
// declaration
var function = new CCodeFunction (to_string_func, "const char*");
function.modifiers = CCodeModifiers.STATIC;
function.add_parameter (new CCodeParameter ("value", get_ccode_name (en)));
// definition
push_context (new EmitContext ());
push_function (function);
ccode.open_switch (new CCodeConstant ("value"));
foreach (var enum_value in en.get_values ()) {
ccode.add_case (new CCodeIdentifier (get_ccode_name (enum_value)));
ccode.add_return (new CCodeConstant ("\""+get_ccode_name (enum_value)+"\""));
}
ccode.close ();
ccode.add_return (new CCodeConstant ("NULL"));
// append to file
cfile.add_function_declaration (function);
cfile.add_function (function);
pop_context ();
return to_string_func;
}
bool has_ref_out_argument (MethodCall c) {
foreach (var arg in c.get_argument_list ()) {
unowned UnaryExpression? unary = arg as UnaryExpression;
if (unary != null && (unary.operator == UnaryOperator.OUT || unary.operator == UnaryOperator.REF)) {
return true;
}
}
return false;
}
string generate_string_printf_function () {
if (!add_wrapper ("string_printf")) {
// wrapper already defined
return "string_printf";
}
// declaration
var function = new CCodeFunction ("string_printf", "char*");
function.add_parameter (new CCodeParameter ("format", "const char*"));
function.add_parameter (new CCodeParameter.with_ellipsis ());
function.modifiers = CCodeModifiers.STATIC;
// definition
push_context (new EmitContext ());
push_function (function);
ccode.add_declaration ("int", new CCodeVariableDeclarator ("length"));
ccode.add_declaration ("va_list", new CCodeVariableDeclarator ("ap"));
ccode.add_declaration ("char*", new CCodeVariableDeclarator ("result"));
var va_start = new CCodeFunctionCall (new CCodeIdentifier ("va_start"));
va_start.add_argument (new CCodeIdentifier ("ap"));
va_start.add_argument (new CCodeIdentifier ("format"));
ccode.add_expression (va_start);
var vsnprintf = new CCodeFunctionCall (new CCodeIdentifier ("vsnprintf"));
vsnprintf.add_argument (new CCodeConstant ("NULL"));
vsnprintf.add_argument (new CCodeConstant ("0"));
vsnprintf.add_argument (new CCodeIdentifier ("format"));
vsnprintf.add_argument (new CCodeIdentifier ("ap"));
ccode.add_assignment (new CCodeIdentifier ("length"), new CCodeBinaryExpression (CCodeBinaryOperator.PLUS, vsnprintf, new CCodeConstant ("1")));
var va_end = new CCodeFunctionCall (new CCodeIdentifier ("va_end"));
va_end.add_argument (new CCodeIdentifier ("ap"));
ccode.add_expression (va_end);
var malloc = new CCodeFunctionCall (new CCodeIdentifier ("malloc"));
malloc.add_argument (new CCodeIdentifier ("length"));
ccode.add_assignment (new CCodeIdentifier ("result"), malloc);
va_start = new CCodeFunctionCall (new CCodeIdentifier ("va_start"));
va_start.add_argument (new CCodeIdentifier ("ap"));
va_start.add_argument (new CCodeIdentifier ("format"));
ccode.add_expression (va_start);