aboutsummaryrefslogtreecommitdiffstats
path: root/src/bin/eolian_mono/eolian/mono/klass.hh
blob: 9d3711fb61ff97b3b26a989613ac1d5267e49dbd (plain) (blame)
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
#ifndef EOLIAN_MONO_CLASS_DEFINITION_HPP
#define EOLIAN_MONO_CLASS_DEFINITION_HPP

#include "grammar/integral.hpp"
#include "grammar/generator.hpp"
#include "grammar/klass_def.hpp"
#include "grammar/attribute_conditional.hpp"
#include "blacklist.hh"

#include "grammar/indentation.hpp"
#include "grammar/list.hpp"
#include "grammar/alternative.hpp"
#include "type.hh"
#include "name_helpers.hh"
#include "async_function_definition.hh"
#include "function_definition.hh"
#include "function_registration.hh"
#include "function_declaration.hh"
#include "documentation.hh"
#include "part_definition.hh"
#include "events.hh"
#include "grammar/string.hpp"
#include "grammar/attribute_replace.hpp"
#include "grammar/integral.hpp"
#include "grammar/case.hpp"
#include "using_decl.hh"
#include "utils.hh"

#include <string>
#include <algorithm>

namespace eolian_mono {

template <typename OutputIterator, typename Context>
static bool generate_equals_method(OutputIterator sink, Context const &context)
{
   return as_generator(
       scope_tab << "/// <summary>Verifies if the given object is equal to this one.</summary>\n"
       << scope_tab << "/// <param name=\"instance\">The object to compare to.</param>\n"
       << scope_tab << "/// <returns>True if both objects point to the same native object.</returns>\n"
       << scope_tab << "public override bool Equals(object instance)\n"
       << scope_tab << "{\n"
       << scope_tab << scope_tab << "var other = instance as Efl.Object;\n"
       << scope_tab << scope_tab << "if (other == null)\n"
       << scope_tab << scope_tab << "{\n"
       << scope_tab << scope_tab << scope_tab << "return false;\n"
       << scope_tab << scope_tab << "}\n"
       << scope_tab << scope_tab << "return this.NativeHandle == other.NativeHandle;\n"
       << scope_tab << "}\n\n"
       << scope_tab << "/// <summary>Gets the hash code for this object based on the native pointer it points to.</summary>\n"
       << scope_tab << "/// <returns>The value of the pointer, to be used as the hash code of this object.</returns>\n"
       << scope_tab << "public override int GetHashCode()\n"
       << scope_tab << "{\n"
       << scope_tab << scope_tab << "return this.NativeHandle.ToInt32();\n"
       << scope_tab << "}\n\n"
       << scope_tab << "/// <summary>Turns the native pointer into a string representation.</summary>\n"
       << scope_tab << "/// <returns>A string with the type and the native pointer for this object.</returns>\n"
       << scope_tab << "public override String ToString()\n"
       << scope_tab << "{\n"
       << scope_tab << scope_tab << "return $\"{this.GetType().Name}@[{this.NativeHandle.ToInt32():x}]\";\n"
       << scope_tab << "}\n\n"
      ).generate(sink, nullptr, context);
}

/* Get the actual number of functions of a class, checking for blacklisted ones */
template<typename Context>
static std::size_t
get_implementable_function_count(grammar::attributes::klass_def const& cls, Context context)
{
   auto methods = helpers::get_all_implementable_methods(cls);
   return std::count_if(methods.cbegin(), methods.cend(), [&context](grammar::attributes::function_def const& func)
     {
        return !blacklist::is_function_blacklisted(func, context) && !func.is_static;
     });
}

template<typename Context>
static bool
is_inherit_context(Context const& context)
{
   return context_find_tag<class_context>(context).current_wrapper_kind == class_context::inherit;
}

struct klass
{
   template <typename OutputIterator, typename Context>
   bool generate(OutputIterator sink, attributes::klass_def const& cls, Context const& context) const
   {
     EINA_CXX_DOM_LOG_DBG(eolian_mono::domain) << "klass_generator: " << cls.eolian_name << std::endl;

     auto const& indent = current_indentation(context);

     if (blacklist::is_class_blacklisted(cls, context))
       {
          EINA_CXX_DOM_LOG_DBG(eolian_mono::domain) << "class " << cls.eolian_name << " is blacklisted. Skipping." << std::endl;
          return true;
       }

     std::string suffix, class_type;
     switch(cls.type)
       {
       case attributes::class_type::regular:
         class_type = "class";
         suffix = "CLASS";
         break;
       case attributes::class_type::abstract_:
         class_type = "abstract class";
         suffix = "CLASS";
         break;
       case attributes::class_type::mixin:
         class_type = "interface";
         suffix = "MIXIN";
         break;
       case attributes::class_type::interface_:
         class_type = "interface";
         suffix = "INTERFACE";
         break;
       }

     if (!name_helpers::open_namespaces(sink, cls.namespaces, context))
       return false;

     auto methods = cls.get_all_methods();

     // Interface class
     if(class_type == "interface")
     {
       auto iface_cxt = context_add_tag(class_context{class_context::interface,
                                        name_helpers::klass_full_concrete_or_interface_name(cls)},
                                        context);

       if(!as_generator(documentation).generate(sink, cls, iface_cxt))
         return false;

       // Mark the interface with the proper native Efl_Class* getter
       if(!as_generator(lit("[") << name_helpers::klass_full_native_inherit_name(cls) << "]\n")
          .generate(sink, attributes::unused, iface_cxt))
         return false;

       if(!as_generator
        (
         "public " /*<< class_type*/ "interface" /*<<*/ " " << string << " : "
         )
        .generate(sink, name_helpers::klass_interface_name(cls), iface_cxt))
         return false;
       for(auto first = std::begin(cls.immediate_inherits)
             , last = std::end(cls.immediate_inherits); first != last; ++first)
         {
            if(first->type != attributes::class_type::regular && first->type != attributes::class_type::abstract_)
              if(!as_generator("\n" << scope_tab << string << " ,").generate(sink, name_helpers::klass_full_interface_name(*first), iface_cxt))
                return false;
         }

       if(!as_generator("\n" << scope_tab << "Efl.Eo.IWrapper, IDisposable").generate(sink, attributes::unused, iface_cxt))
         return false;

       if(!as_generator("\n{\n").generate(sink, attributes::unused, iface_cxt))
         return false;

       if(!as_generator(*(scope_tab << function_declaration)).generate(sink, cls.functions, iface_cxt))
         return false;

       if(!as_generator(*(scope_tab << async_function_declaration)).generate(sink, cls.functions, iface_cxt))
         return false;

       if(!as_generator(*(event_declaration)).generate(sink, cls.events, iface_cxt))
         return false;

       for (auto &&p : cls.parts)
         if (!as_generator(
              documentation(1)
              << name_helpers::klass_full_concrete_or_interface_name(p.klass) << " " << utils::capitalize(p.name) << "{ get;}\n"
            ).generate(sink, p, iface_cxt))
           return false;

       if (!as_generator(*(property_wrapper_definition(cls))).generate(sink, cls.properties, iface_cxt))
         return false;

       // End of interface declaration
       if(!as_generator("}\n").generate(sink, attributes::unused, iface_cxt)) return false;
     }

     // Events arguments go in the top namespace to avoid the Concrete suffix clutter in interface events.
     // Regular/abstract class events go here too for consistency.
     if(!as_generator(*(event_argument_wrapper)).generate(sink, cls.events, context))
       return false;

     bool root = !helpers::has_regular_ancestor(cls);
     std::set<attributes::klass_name, attributes::compare_klass_name_by_name> inherit_interfaces = helpers::non_implemented_interfaces(cls, context);
     std::vector<attributes::klass_name> inherit_classes;
     std::copy_if(cls.immediate_inherits.begin(), cls.immediate_inherits.end()
                  , std::back_inserter(inherit_classes)
                  , [] (attributes::klass_name const& klass)
                    {
                       switch (klass.type)
                         {
                          case attributes::class_type::regular:
                          case attributes::class_type::abstract_:
                            return true;
                          default:
                            return false;
                         };
                    });

     // Concrete class for interfaces, mixins, etc.
     if(class_type != "class" && class_type != "abstract class")
       {
         auto concrete_cxt = context_add_tag(class_context{class_context::concrete,
                                             name_helpers::klass_full_concrete_or_interface_name(cls)},
                                             context);
         auto concrete_name = name_helpers::klass_concrete_name(cls);
         auto interface_name = name_helpers::klass_interface_name(cls);

         // We can't make these internal yet as they have methods that are used by
         // other classes that implement the interface.
         if(!as_generator
            (
             documentation
             << "sealed public class " << concrete_name << " : " << "\n"
             << (klass_full_concrete_or_interface_name % ",") << "\n"
             << (inherit_classes.size() > 0 ? ", " : "" ) << interface_name << "\n"
             << scope_tab << *(", " << name_helpers::klass_full_concrete_or_interface_name) << "\n"
             << "{\n"
            ).generate(sink, std::make_tuple(cls, inherit_classes, inherit_interfaces), concrete_cxt))
              return false;

         if (!generate_fields(sink, cls, concrete_cxt))
           return false;

         bool root = !helpers::has_regular_ancestor(cls);
         if (!as_generator
            (
             scope_tab << "[System.Runtime.InteropServices.DllImport(" << context_find_tag<library_context>(concrete_cxt).actual_library_name(cls.filename)
             << ")] internal static extern System.IntPtr\n"
             << scope_tab << scope_tab << name_helpers::klass_get_name(cls) << "();\n"
             << scope_tab << "/// <summary>Initializes a new instance of the <see cref=\"" << interface_name << "\"/> class.\n"
             << scope_tab << "/// Internal usage: This is used when interacting with C code and should not be used directly.</summary>\n"
             << scope_tab << "private " << concrete_name << "(System.IntPtr raw)" << (root ? "" : " : base(raw)") << "\n"
             << scope_tab << "{\n"
             << scope_tab << scope_tab << (root ? "handle = raw;\n" : "")
             << scope_tab << "}\n"
            )
            .generate(sink, attributes::unused, concrete_cxt))
           return false;

         if (!generate_dispose_methods(sink, cls, concrete_cxt))
           return false;

         if (!generate_equals_method(sink, concrete_cxt))
           return false;

         if (!generate_events(sink, cls, concrete_cxt))
             return false;

         // Parts
         if(!as_generator(*(part_definition))
            .generate(sink, cls.parts, concrete_cxt)) return false;

         // Concrete function definitions
         auto implemented_methods = helpers::get_all_implementable_methods(cls);
         if(!as_generator(*(function_definition))
            .generate(sink, implemented_methods, concrete_cxt)) return false;

         // Async wrappers
         if(!as_generator(*(async_function_definition)).generate(sink, implemented_methods, concrete_cxt))
           return false;

         // Property wrappers
         if (!as_generator(*(property_wrapper_definition(cls))).generate(sink, cls.properties, concrete_cxt))
           return false;

         for (auto&& klass : helpers::non_implemented_interfaces(cls, concrete_cxt))
           {
              attributes::klass_def c(get_klass(klass, cls.unit), cls.unit);
              if (!as_generator(*(property_wrapper_definition(cls))).generate(sink, c.properties, concrete_cxt))
                return false;
           }

         // Copied from nativeinherit class, used when setting up providers.
         if(!as_generator(
              scope_tab << "private static IntPtr GetEflClassStatic()\n"
              << scope_tab << "{\n"
              << scope_tab << scope_tab << "return " << name_helpers::klass_get_full_name(cls) << "();\n"
              << scope_tab << "}\n"
           ).generate(sink, attributes::unused, concrete_cxt))
           return false;

         if(!generate_native_inherit_class(sink, cls, change_indentation(indent.inc(), context)))
           return true;

         if(!as_generator("}\n").generate(sink, attributes::unused, concrete_cxt)) return false;
       }

     // Inheritable class
     if(class_type == "class" || class_type == "abstract class")
       {
        auto inherit_cxt = context_add_tag(class_context{class_context::inherit,
                                           name_helpers::klass_full_concrete_or_interface_name(cls)},
                                           context);

        // Class header
        if(!as_generator
            (
             documentation
             << "[" << name_helpers::klass_full_native_inherit_name(cls) << "]\n"
             << "public " << class_type << " " << name_helpers::klass_concrete_name(cls) << " : "
             << (klass_full_concrete_or_interface_name % ",") // classes
             << (inherit_classes.empty() ? "" : ",")
             << " Efl.Eo.IWrapper" << (root ? ", IDisposable" : "")
             << (inherit_interfaces.empty() ? "" : ",")
             << (klass_full_concrete_or_interface_name % ",") // interfaces
             << "\n{\n"
             )
           .generate(sink, std::make_tuple(cls, inherit_classes, inherit_interfaces), inherit_cxt))
           return false;


         // Class body
         if(!generate_fields(sink, cls, inherit_cxt))
           return false;

         if (!generate_constructors(sink, cls, inherit_cxt))
           return false;

         if (!generate_dispose_methods(sink, cls, inherit_cxt))
           return false;

         if (!generate_equals_method(sink, inherit_cxt))
           return false;

         if (!generate_events(sink, cls, inherit_cxt))
             return false;

         // Parts
         if(!as_generator(*(part_definition))
            .generate(sink, cls.parts, inherit_cxt)) return false;

         // Inherit function definitions
         auto implemented_methods = helpers::get_all_implementable_methods(cls);
         if(!as_generator(*(function_definition(true)))
            .generate(sink, implemented_methods, inherit_cxt)) return false;

         // Async wrappers
         if(!as_generator(*(async_function_definition(true))).generate(sink, implemented_methods, inherit_cxt))
           return false;

         // Property wrappers
         if (!as_generator(*(property_wrapper_definition(cls))).generate(sink, cls.properties, inherit_cxt))
           return false;

         for (auto&& klass : helpers::non_implemented_interfaces(cls, inherit_cxt))
           {
              attributes::klass_def c(get_klass(klass, cls.unit), cls.unit);
              if (!as_generator(*(property_wrapper_definition(cls))).generate(sink, c.properties, inherit_cxt))
                return false;
           }

         // Copied from nativeinherit class, used when setting up providers.
         if(!as_generator(
              scope_tab << "private static IntPtr GetEflClassStatic()\n"
              << scope_tab << "{\n"
              << scope_tab << scope_tab << "return " << name_helpers::klass_get_full_name(cls) << "();\n"
              << scope_tab << "}\n"
           ).generate(sink, attributes::unused, inherit_cxt))
           return false;

         if(!generate_native_inherit_class(sink, cls, change_indentation(indent.inc(), context)))
           return true;

         if(!as_generator("}\n").generate(sink, attributes::unused, inherit_cxt)) return false;
       }


     if(!name_helpers::close_namespaces(sink, cls.namespaces, context))
       return false;

     return true;
   }

   // NativeInherit class. Contains function pointers for the native Eo methods and delegates that are registered in Eo as virtual method implementations
   // These delegates are called from C to C#, checking whether the C# subclass reimplemented it.
   template <typename OutputIterator, typename Context>
   bool generate_native_inherit_class(OutputIterator sink, attributes::klass_def const& cls, Context const& context) const
   {
       {
         auto inative_cxt = context_add_tag(class_context{class_context::inherit_native,
                                            name_helpers::klass_full_concrete_or_interface_name(cls)},
                                            context);
         auto native_inherit_name = name_helpers::klass_native_inherit_name(cls);
         auto inherit_name = name_helpers::klass_inherit_name(cls);
         auto implementable_methods = helpers::get_all_implementable_methods(cls);
         bool root = !helpers::has_regular_ancestor(cls);
         auto const& indent = current_indentation(inative_cxt);

         std::string base_name;
         if(!root)
           {
              attributes::klass_def parent_klass(get_klass(*cls.parent, cls.unit), cls.unit);
              base_name = name_helpers::klass_full_native_inherit_name(parent_klass);
           }

         if(!as_generator
            (
             indent << lit("/// <summary>Wrapper for native methods and virtual method delegates.\n")
             << indent << "/// For internal use by generated code only.</summary>\n"
             << indent << "public " << (root ? "" : "new " ) << "class " << native_inherit_name << " " << (root ? " : Efl.Eo.NativeClass" : (": " + base_name)) <<"\n"
             << indent << "{\n"
            ).generate(sink, attributes::unused, inative_cxt))
           return false;

         if(implementable_methods.size() >= 1)
           {
              if(!as_generator(
                    indent << scope_tab << "private static Efl.Eo.NativeModule Module = new Efl.Eo.NativeModule("
                    << indent << context_find_tag<library_context>(context).actual_library_name(cls.filename) << ");\n"
                 ).generate(sink, attributes::unused, inative_cxt))
                return false;
           }

         if(!as_generator(
             indent << scope_tab << "/// <summary>Gets the list of Eo operations to override.</summary>\n"
             << indent << scope_tab << "/// <returns>The list of Eo operations to be overload.</returns>\n"
             << indent << scope_tab << "public override System.Collections.Generic.List<Efl_Op_Description> GetEoOps(System.Type type)\n"
             << indent << scope_tab << "{\n"
             << indent << scope_tab << scope_tab << "var descs = new System.Collections.Generic.List<Efl_Op_Description>();\n"
            )
            .generate(sink, attributes::unused, inative_cxt))
           return false;

         // Native wrapper registration
         // We write them first to a temporary function as the implementable function list may contain
         // only non-registrable methods like class functions, leading to unused `methods` variable.
         std::string tmp_registration;
         if(!as_generator(*(function_registration(cls)))
            .generate(std::back_inserter(tmp_registration), implementable_methods, change_indentation(indent.inc(2), inative_cxt)))
           return false;

         if (tmp_registration.find("methods") != std::string::npos)
           if (!as_generator(
                    indent << scope_tab << scope_tab << "var methods = Efl.Eo.Globals.GetUserMethods(type);\n\n"
                    << tmp_registration
                ).generate(sink,  attributes::unused, inative_cxt))
             return false;

         if(!root)
           if(!as_generator(indent << scope_tab << scope_tab << "descs.AddRange(base.GetEoOps(type));\n").generate(sink, attributes::unused, inative_cxt))
             return false;

         if(!as_generator(
                indent << scope_tab << scope_tab << "return descs;\n"
                << indent << scope_tab << "}\n"
            ).generate(sink, attributes::unused, inative_cxt))
           return false;

         // Attribute getter of the native 'Efl_Class *' handle (for proper inheritance from additional explicit interfaces)
         if(!as_generator(
              indent << scope_tab << "/// <summary>Returns the Eo class for the native methods of this class.</summary>\n"
              << indent << scope_tab << "/// <returns>The native class pointer.</returns>\n"
              << indent << scope_tab << "public override IntPtr GetEflClass()\n"
              << indent << scope_tab << "{\n"
              << indent << scope_tab << scope_tab << "return " << name_helpers::klass_get_full_name(cls) << "();\n"
              << indent << scope_tab << "}\n\n"
           ).generate(sink, attributes::unused, inative_cxt))
           return false;

         // Native method definitions
         if(!as_generator(
                indent << scope_tab << "#pragma warning disable CA1707, CS1591, SA1300, SA1600\n\n"
                <<  *(native_function_definition(cls))
                << indent << scope_tab << "#pragma warning restore CA1707, CS1591, SA1300, SA1600\n\n")
            .generate(sink, implementable_methods, change_indentation(indent.inc(), inative_cxt))) return false;

         if(!as_generator("}\n").generate(sink, attributes::unused, inative_cxt)) return false;
       }
     return true;
   }

   template <typename OutputIterator, typename Context>
   bool generate_fields(OutputIterator sink, attributes::klass_def const& cls, Context const& context) const
   {
     std::string visibility = is_inherit_context(context) ? "protected " : "private ";
     bool root = !helpers::has_regular_ancestor(cls);
     bool is_inherit = is_inherit_context(context);

     std::string class_getter = name_helpers::klass_get_name(cls) + "()";
     std::string native_inherit_full_name = name_helpers::klass_full_native_inherit_name(cls);
     auto inherit_name = name_helpers::klass_concrete_name(cls);

     std::string raw_klass_modifier;
     if (!root)
       raw_klass_modifier = "override ";
     else if (is_inherit)
       raw_klass_modifier = "virtual ";

     if(!as_generator(
                scope_tab << "///<summary>Pointer to the native class description.</summary>\n"
                << scope_tab << "public " << raw_klass_modifier << "System.IntPtr NativeClass\n"
                << scope_tab << "{\n"
                << scope_tab << scope_tab << "get\n"
                << scope_tab << scope_tab << "{\n"
                << scope_tab << scope_tab << scope_tab << "if (((object)this).GetType() == typeof(" << inherit_name << "))\n"
                << scope_tab << scope_tab << scope_tab << "{\n"
                << scope_tab << scope_tab << scope_tab << scope_tab << "return GetEflClassStatic();\n"
                << scope_tab << scope_tab << scope_tab << "}\n"
                << scope_tab << scope_tab << scope_tab << "else\n"
                << scope_tab << scope_tab << scope_tab << "{\n"
                << scope_tab << scope_tab << scope_tab << scope_tab << "return Efl.Eo.ClassRegister.klassFromType[((object)this).GetType()];\n"
                << scope_tab << scope_tab << scope_tab << "}\n"
                << scope_tab << scope_tab << "}\n"
                << scope_tab << "}\n\n"
            ).generate(sink, attributes::unused, context))
         return false;

     // The remaining fields aren't needed in children classes.
     if (!root)
       return true;

     if (cls.get_all_events().size() > 0)
        if (!as_generator(
                    scope_tab << "/// <summary>Internal usage by derived classes to track native events.</summary>\n"
                    << scope_tab << visibility << "Dictionary<(IntPtr desc, object evtDelegate), (IntPtr evtCallerPtr, Efl.EventCb evtCaller)> eoEvents = new Dictionary<(IntPtr desc, object evtDelegate), (IntPtr evtCallerPtr, Efl.EventCb evtCaller)>();\n"
                    << scope_tab << "/// <summary>Internal usage by derived classes to lock native event handlers.</summary>\n"
                    << scope_tab << visibility << "readonly object eventLock = new object();\n")
              .generate(sink, attributes::unused, context))
          return false;

     if (is_inherit)
      {
         if (!as_generator(
                scope_tab << "/// <summary>Internal usage to detect whether this instance is from a generated class or not.</summary>\n"
                << scope_tab << "protected bool inherited;\n"
                ).generate(sink, attributes::unused, context))
           return false;
      }

     return as_generator(
                scope_tab << visibility << " System.IntPtr handle;\n"
                << scope_tab << "///<summary>Pointer to the native instance.</summary>\n"
                << scope_tab << "public System.IntPtr NativeHandle\n"
                << scope_tab << "{\n"
                << scope_tab << scope_tab << "get { return handle; }\n"
                << scope_tab << "}\n\n"
             ).generate(sink, attributes::unused, context);
   }

   template <typename OutputIterator, typename Context>
   bool generate_constructors(OutputIterator sink, attributes::klass_def const& cls, Context const& context) const
   {
     bool root = !helpers::has_regular_ancestor(cls);
     auto inherit_name = name_helpers::klass_concrete_name(cls);

     if(!as_generator(
             scope_tab << "[System.Runtime.InteropServices.DllImport(" << context_find_tag<library_context>(context).actual_library_name(cls.filename)
             << ")] internal static extern System.IntPtr\n"
             << scope_tab << scope_tab << name_helpers::klass_get_name(cls) << "();\n"
            ).generate(sink, attributes::unused, context))
       return false;

     auto all_constructors = helpers::reorder_constructors(cls.get_all_constructors());
     decltype (all_constructors) constructors;

     std::copy_if(all_constructors.cbegin(), all_constructors.cend(), std::back_inserter(constructors), [&context](attributes::constructor_def const& ctor) {
        return !blacklist::is_function_blacklisted(ctor.function, context);
     });

     // Public (API) constructors
     if (!as_generator(
                     scope_tab << "/// <summary>Initializes a new instance of the <see cref=\"" << inherit_name << "\"/> class.</summary>\n"
                     << scope_tab << "/// <param name=\"parent\">Parent instance.</param>\n"
                     << *(documentation)
                     // For constructors with arguments, the parent is also required, as optional parameters can't come before non-optional paramenters.
                     << scope_tab << "public " << inherit_name << "(Efl.Object parent" << ((constructors.size() > 0) ? "" : "= null") << "\n"
                     << scope_tab << scope_tab << scope_tab << *(", " << constructor_param ) << ") : "
                             << (root ? "this" : "base")  << "(" << name_helpers::klass_get_name(cls) <<  "(), typeof(" << inherit_name << "), parent)\n"
                     << scope_tab << "{\n"
                     << (*(scope_tab << scope_tab << constructor_invocation << "\n"))
                     << scope_tab << scope_tab << "FinishInstantiation();\n"
                     << scope_tab << "}\n\n"
                     << scope_tab << "/// <summary>Initializes a new instance of the <see cref=\"" << inherit_name << "\"/> class.\n"
                     << scope_tab << "/// Internal usage: Constructs an instance from a native pointer. This is used when interacting with C code and should not be used directly.</summary>\n"
                     << scope_tab << "/// <param name=\"raw\">The native pointer to be wrapped.</param>\n"
                     << scope_tab << "protected " << inherit_name << "(System.IntPtr raw)" << (root ? "" : " : base(raw)") << "\n"
                     << scope_tab << "{\n"
                     << scope_tab << scope_tab << (root ? "handle = raw;\n" : "")
                     << scope_tab << "}\n\n"
                 ).generate(sink, std::make_tuple(constructors, constructors, constructors), context))
         return false;

     // Some abstract classes (like Efl.App) have a simple regular class that is used to instantiate them
     // in a controlled manner. These fake-private classes can be returned from C and we use a similarly-named
     // private class to be able to instantiate them when they get to the C# world.
     if (cls.type == attributes::class_type::abstract_)
     {
         if (!as_generator(
                scope_tab << "[Efl.Eo.PrivateNativeClass]\n"
                << scope_tab << "private class " << inherit_name << "Realized : " << inherit_name << "\n"
                << scope_tab << "{\n"
                << scope_tab << scope_tab << "private " << inherit_name << "Realized(IntPtr ptr) : base(ptr)\n"
                << scope_tab << scope_tab << "{\n"
                << scope_tab << scope_tab << "}\n"
                << scope_tab << "}\n"
            ).generate(sink, attributes::unused, context))
           return false;
     }

     // Internal constructors
     if (!root)
     {
         return as_generator(
                     scope_tab << "/// <summary>Initializes a new instance of the <see cref=\"" << inherit_name << "\"/> class.\n"
                     << scope_tab << "/// Internal usage: Constructor to forward the wrapper initialization to the root class that interfaces with native code. Should not be used directly.</summary>\n"
                     << scope_tab << "/// <param name=\"baseKlass\">The pointer to the base native Eo class.</param>\n"
                     << scope_tab << "/// <param name=\"managedType\">The managed type of the public constructor that originated this call.</param>\n"
                     << scope_tab << "/// <param name=\"parent\">The Efl.Object parent of this instance.</param>\n"
                     << scope_tab << "protected " << inherit_name << "(IntPtr baseKlass, System.Type managedType, Efl.Object parent) : base(baseKlass, managedType, parent)\n"
                     << scope_tab << "{\n"
                     << scope_tab << "}\n\n"
                  ).generate(sink, attributes::unused, context);

     }

     // Detailed constructors go only in root classes.
     return as_generator(
             /// Actual root costructor that creates class and instantiates 
             scope_tab << "/// <summary>Initializes a new instance of the <see cref=\"" << inherit_name << "\"/> class.\n"
             << scope_tab << "/// Internal usage: Constructor to actually call the native library constructors. C# subclasses\n"
             << scope_tab << "/// must use the public constructor only.</summary>\n"
             << scope_tab << "/// <param name=\"baseKlass\">The pointer to the base native Eo class.</param>\n"
             << scope_tab << "/// <param name=\"managedType\">The managed type of the public constructor that originated this call.</param>\n"
             << scope_tab << "/// <param name=\"parent\">The Efl.Object parent of this instance.</param>\n"
             << scope_tab << "protected " << inherit_name << "(IntPtr baseKlass, System.Type managedType, Efl.Object parent)\n"
             << scope_tab << "{\n"
             << scope_tab << scope_tab << "inherited = ((object)this).GetType() != managedType;\n"
             << scope_tab << scope_tab << "IntPtr actual_klass = baseKlass;\n"
             << scope_tab << scope_tab << "if (inherited)\n"
             << scope_tab << scope_tab << "{\n"
             << scope_tab << scope_tab << scope_tab << "actual_klass = Efl.Eo.ClassRegister.GetInheritKlassOrRegister(baseKlass, ((object)this).GetType());\n"
             << scope_tab << scope_tab << "}\n\n"
             << scope_tab << scope_tab << "handle = Efl.Eo.Globals.instantiate_start(actual_klass, parent);\n"
             << scope_tab << scope_tab << "if (inherited)\n"
             << scope_tab << scope_tab << "{\n"
             << scope_tab << scope_tab << scope_tab << "Efl.Eo.Globals.PrivateDataSet(this);\n"
             << scope_tab << scope_tab << "}\n"
             << scope_tab << "}\n\n"

             << scope_tab << "/// <summary>Finishes instantiating this object.\n"
             << scope_tab << "/// Internal usage by generated code.</summary>\n"
             << scope_tab << "protected void FinishInstantiation()\n"
             << scope_tab << "{\n"
             << scope_tab << scope_tab << "handle = Efl.Eo.Globals.instantiate_end(handle);\n"
             << scope_tab << scope_tab << "Eina.Error.RaiseIfUnhandledException();\n"
             << scope_tab << "}\n\n"

             ).generate(sink, attributes::unused, context);
   }


   template <typename OutputIterator, typename Context>
   bool generate_dispose_methods(OutputIterator sink, attributes::klass_def const& cls, Context const& context) const
   {
     if (helpers::has_regular_ancestor(cls))
       return true;

     std::string visibility = is_inherit_context(context) ? "protected virtual " : "private ";

     auto inherit_name = name_helpers::klass_concrete_name(cls);

     std::string events_gchandle;
     if (cls.get_all_events().size() > 0)
       {
           auto events_gchandle_sink = std::back_inserter(events_gchandle);
           if (!as_generator(scope_tab << scope_tab << scope_tab << "if (eoEvents.Count != 0)\n"
                             << scope_tab << scope_tab << scope_tab << "{\n"
                             << scope_tab << scope_tab << scope_tab << scope_tab << "GCHandle gcHandle = GCHandle.Alloc(eoEvents);\n"
                             << scope_tab << scope_tab << scope_tab << scope_tab << "gcHandlePtr = GCHandle.ToIntPtr(gcHandle);\n"
                             << scope_tab << scope_tab << scope_tab << "}\n\n")
                 .generate(events_gchandle_sink, attributes::unused, context))
             return false;
       }

     return as_generator(

             scope_tab << "///<summary>Destructor.</summary>\n"
             << scope_tab << "~" << inherit_name << "()\n"
             << scope_tab << "{\n"
             << scope_tab << scope_tab << "Dispose(false);\n"
             << scope_tab << "}\n\n"

             << scope_tab << "///<summary>Releases the underlying native instance.</summary>\n"
             << scope_tab << visibility << "void Dispose(bool disposing)\n"
             << scope_tab << "{\n"
             << scope_tab << scope_tab << "if (handle != System.IntPtr.Zero)\n"
             << scope_tab << scope_tab << "{\n"
             << scope_tab << scope_tab << scope_tab << "IntPtr h = handle;\n"
             << scope_tab << scope_tab << scope_tab << "handle = IntPtr.Zero;\n\n"

             << scope_tab << scope_tab << scope_tab << "IntPtr gcHandlePtr = IntPtr.Zero;\n"
             << events_gchandle

             << scope_tab << scope_tab << scope_tab << "if (disposing)\n"
             << scope_tab << scope_tab << scope_tab << "{\n"
             << scope_tab << scope_tab << scope_tab << scope_tab << "Efl.Eo.Globals.efl_mono_native_dispose(h, gcHandlePtr);\n"
             << scope_tab << scope_tab << scope_tab << "}\n"
             << scope_tab << scope_tab << scope_tab << "else\n"
             << scope_tab << scope_tab << scope_tab << "{\n"

             << scope_tab << scope_tab << scope_tab << scope_tab << "Monitor.Enter(Efl.All.InitLock);\n"
             << scope_tab << scope_tab << scope_tab << scope_tab << "if (Efl.All.MainLoopInitialized)\n"
             << scope_tab << scope_tab << scope_tab << scope_tab << "{\n"
             << scope_tab << scope_tab << scope_tab << scope_tab << scope_tab << "Efl.Eo.Globals.efl_mono_thread_safe_native_dispose(h, gcHandlePtr);\n"
             << scope_tab << scope_tab << scope_tab << scope_tab << "}\n\n"
             << scope_tab << scope_tab << scope_tab << scope_tab << "Monitor.Exit(Efl.All.InitLock);\n"
             << scope_tab << scope_tab << scope_tab << "}\n"
             << scope_tab << scope_tab << "}\n\n"
             << scope_tab << "}\n\n"

             << scope_tab << "///<summary>Releases the underlying native instance.</summary>\n"
             << scope_tab << "public void Dispose()\n"
             << scope_tab << "{\n"
             << scope_tab << scope_tab << "Dispose(true);\n"
             << scope_tab << scope_tab << "GC.SuppressFinalize(this);\n"
             << scope_tab << "}\n\n"
             ).generate(sink, attributes::unused, context);
   }

   template <typename OutputIterator, typename Context>
   bool generate_events(OutputIterator sink, attributes::klass_def const& cls, Context const& context) const
   {

     if (!has_events(cls))
         return true;

     std::string visibility = is_inherit_context(context) ? "protected " : "private ";

     if (!helpers::has_regular_ancestor(cls))
       {
     // Callback registration functions
     if (!as_generator(
            scope_tab << "///<summary>Adds a new event handler, registering it to the native event. For internal use only.</summary>\n"
            << scope_tab << "///<param name=\"lib\">The name of the native library definining the event.</param>\n"
            << scope_tab << "///<param name=\"key\">The name of the native event.</param>\n"
            << scope_tab << "///<param name=\"evtCaller\">Delegate to be called by native code on event raising.</param>\n"
            << scope_tab << "///<param name=\"evtDelegate\">Managed delegate that will be called by evtCaller on event raising.</param>\n"
            << scope_tab << visibility << "void AddNativeEventHandler(string lib, string key, Efl.EventCb evtCaller, object evtDelegate)\n"
            << scope_tab << "{\n"

            << scope_tab << scope_tab << "IntPtr desc = Efl.EventDescription.GetNative(lib, key);\n"
            << scope_tab << scope_tab << "if (desc == IntPtr.Zero)\n"
            << scope_tab << scope_tab << "{\n"
            << scope_tab << scope_tab << scope_tab << "Eina.Log.Error($\"Failed to get native event {key}\");\n"
            << scope_tab << scope_tab << "}\n\n"

            << scope_tab << scope_tab << "if (eoEvents.ContainsKey((desc, evtDelegate)))\n"
            << scope_tab << scope_tab << "{\n"
            << scope_tab << scope_tab << scope_tab << "Eina.Log.Warning($\"Event proxy for event {key} already registered!\");\n"
            << scope_tab << scope_tab << scope_tab << "return;\n"
            << scope_tab << scope_tab << "}\n\n"

            << scope_tab << scope_tab << "IntPtr evtCallerPtr = Marshal.GetFunctionPointerForDelegate(evtCaller);\n"
            << scope_tab << scope_tab << "if (!Efl.Eo.Globals.efl_event_callback_priority_add(handle, desc, 0, evtCallerPtr, IntPtr.Zero))\n"
            << scope_tab << scope_tab << "{\n"
            << scope_tab << scope_tab << scope_tab << "Eina.Log.Error($\"Failed to add event proxy for event {key}\");\n"
            << scope_tab << scope_tab << scope_tab << "return;\n"
            << scope_tab << scope_tab << "}\n\n"

            << scope_tab << scope_tab << "eoEvents[(desc, evtDelegate)] = (evtCallerPtr, evtCaller);\n"
            << scope_tab << scope_tab << "Eina.Error.RaiseIfUnhandledException();\n"
            << scope_tab << "}\n\n"

            << scope_tab << "///<summary>Removes the given event handler for the given event. For internal use only.</summary>\n"
            << scope_tab << "///<param name=\"lib\">The name of the native library definining the event.</param>\n"
            << scope_tab << "///<param name=\"key\">The name of the native event.</param>\n"
            << scope_tab << "///<param name=\"evtDelegate\">The delegate to be removed.</param>\n"
            << scope_tab << visibility << "void RemoveNativeEventHandler(string lib, string key, object evtDelegate)\n"
            << scope_tab << "{\n"

            << scope_tab << scope_tab << "IntPtr desc = Efl.EventDescription.GetNative(lib, key);\n"
            << scope_tab << scope_tab << "if (desc == IntPtr.Zero)\n"
            << scope_tab << scope_tab << "{\n"
            << scope_tab << scope_tab << scope_tab << "Eina.Log.Error($\"Failed to get native event {key}\");\n"
            << scope_tab << scope_tab << scope_tab << "return;\n"
            << scope_tab << scope_tab << "}\n\n"

            << scope_tab << scope_tab << "var evtPair = (desc, evtDelegate);\n"
            << scope_tab << scope_tab << "if (eoEvents.TryGetValue(evtPair, out var caller))\n"
            << scope_tab << scope_tab << "{\n"

            << scope_tab << scope_tab << scope_tab << "if (!Efl.Eo.Globals.efl_event_callback_del(handle, desc, caller.evtCallerPtr, IntPtr.Zero))\n"
            << scope_tab << scope_tab << scope_tab << "{\n"
            << scope_tab << scope_tab << scope_tab << scope_tab << "Eina.Log.Error($\"Failed to remove event proxy for event {key}\");\n"
            << scope_tab << scope_tab << scope_tab << scope_tab << "return;\n"
            << scope_tab << scope_tab << scope_tab << "}\n\n"

            << scope_tab << scope_tab << scope_tab << "eoEvents.Remove(evtPair);\n"
            << scope_tab << scope_tab << scope_tab << "Eina.Error.RaiseIfUnhandledException();\n"
            << scope_tab << scope_tab << "}\n"
            << scope_tab << scope_tab << "else\n"
            << scope_tab << scope_tab << "{\n"
            << scope_tab << scope_tab << scope_tab << "Eina.Log.Error($\"Trying to remove proxy for event {key} when it is nothing registered.\");\n"
            << scope_tab << scope_tab << "}\n"
            << scope_tab << "}\n\n"
            )
             .generate(sink, NULL, context))
         return false;
       }

     // Self events
     if (!as_generator(*(event_definition(cls, cls))).generate(sink, cls.events, context))
       return false;

     // Inherited events

     // For now, as mixins can inherit from regular classes, we can't filter out inherited events.
     auto inherits = helpers::non_implemented_interfaces(cls, context);
     for (auto&& c : inherits)
       {
          attributes::klass_def klass(get_klass(c, cls.unit), cls.unit);
          if (!as_generator(*(event_definition(klass, cls))).generate(sink, klass.events, context))
            return false;
       }
     return true;
   }
};

struct klass const klass = {};

}

namespace efl { namespace eolian { namespace grammar {
  
template <>
struct is_eager_generator<struct ::eolian_mono::klass> : std::true_type {};
template <>
struct is_generator<struct ::eolian_mono::klass> : std::true_type {};

namespace type_traits {
template <>
struct attributes_needed<struct ::eolian_mono::klass> : std::integral_constant<int, 1> {};
}
      
} } }

#endif