aboutsummaryrefslogtreecommitdiffstats
path: root/src/bin/eolian_mono/eolian/mono/function_definition.hh
blob: 8c43008c53cbb4434d025578728e39e9747f0207 (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
#ifndef EOLIAN_MONO_FUNCTION_DEFINITION_HH
#define EOLIAN_MONO_FUNCTION_DEFINITION_HH

#include <Eina.hh>

#include "grammar/generator.hpp"
#include "grammar/klass_def.hpp"

#include "grammar/indentation.hpp"
#include "grammar/list.hpp"
#include "grammar/alternative.hpp"
#include "grammar/attribute_reorder.hpp"
#include "logging.hh"
#include "type.hh"
#include "name_helpers.hh"
#include "helpers.hh"
#include "function_helpers.hh"
#include "marshall_type.hh"
#include "parameter.hh"
#include "documentation.hh"
#include "using_decl.hh"
#include "generation_contexts.hh"
#include "blacklist.hh"

namespace eolian_mono {

struct native_function_definition_generator
{
  attributes::klass_def const* klass;
  
  template <typename OutputIterator, typename Context>
  bool generate(OutputIterator sink, attributes::function_def const& f, Context const& context) const
  {
    EINA_CXX_DOM_LOG_DBG(eolian_mono::domain) << "native_function_definition_generator: " << f.c_name << std::endl;
    if(blacklist::is_function_blacklisted(f, context))
      return true;

    auto const& indent = current_indentation(context);

    // Delegate for the C# method we will export to EO as a method implementation.
    if(!as_generator
       (
        indent << eolian_mono::marshall_annotation(true) << "\n"
        << indent << "private delegate "
        << eolian_mono::marshall_type(true)
        << " "
        << string
        << "_delegate(" << (f.is_static ? "" : "System.IntPtr obj, System.IntPtr pd")
        << ((!f.is_static && f.parameters.size() > 0) ? ", " : "")
        << (grammar::attribute_reorder<-1, -1>
        (
         (marshall_annotation << " " << marshall_parameter)
        ) % ", ")
        << ");\n\n")
       .generate(sink, std::make_tuple(f.return_type, f.return_type, f.c_name, f.parameters), context))
      return false;

    // API delegate is the wrapper for the Eo methods exported from C that we will use from C#.
    if(!as_generator
       (
        indent << eolian_mono::marshall_annotation(true) << "\n"
        << indent << "public delegate "
        << eolian_mono::marshall_type(true)
        << " "
        << string << "_api_delegate(" << (f.is_static ? "" : "System.IntPtr obj")
        << ((!f.is_static && f.parameters.size() > 0) ? ", " : "")
        << (grammar::attribute_reorder<-1, -1>
        (
         (marshall_annotation << " " << marshall_parameter)
        ) % ", ")
        << ");\n\n")
       .generate(sink, std::make_tuple(f.return_type, f.return_type, f.c_name, f.parameters), context))
      return false;

    // Delegate holder (so it can't be collected).
    if(!as_generator
       (indent << "public static Efl.Eo.FunctionWrapper<" << string << "_api_delegate> " << string << "_ptr = new Efl.Eo.FunctionWrapper<"
          << string << "_api_delegate>(Module, \"" << string << "\");\n\n")
       .generate(sink, std::make_tuple(f.c_name, f.c_name, f.c_name, f.c_name), context))
      return false;

    // Actual method implementation to be called from C.
    std::string return_type;
    if(!as_generator(eolian_mono::type(true)).generate(std::back_inserter(return_type), f.return_type, context))
      return false;

    std::string klass_cast_name;
    if ((klass->type == attributes::class_type::interface_) ||
        ((klass->type == attributes::class_type::mixin) && !f.is_static))
      klass_cast_name = name_helpers::klass_interface_name(*klass);
    else
      klass_cast_name = name_helpers::klass_inherit_name(*klass);

    std::string self = "Efl.Eo.Globals.efl_super(obj, Efl.Eo.Globals.efl_class_get(obj))";

    if (f.is_static)
      self = "";

    if(!as_generator
       (indent << "private static "
        << eolian_mono::marshall_type(true) << " "
        << string
        << "(System.IntPtr obj, System.IntPtr pd"
        << *(", " << marshall_parameter)
        << ")\n"
        << indent << "{\n"
        << indent << scope_tab << "Eina.Log.Debug(\"function " << string << " was called\");\n"
        << indent << scope_tab << "var ws = Efl.Eo.Globals.GetWrapperSupervisor(obj);\n"
        << indent << scope_tab << "if (ws != null)\n"
        << indent << scope_tab << "{\n"
        << eolian_mono::native_function_definition_preamble()
        << indent << scope_tab << scope_tab << "try\n"
        << indent << scope_tab << scope_tab << "{\n"
        << indent << scope_tab << scope_tab << scope_tab << (return_type != "void" ? "_ret_var = " : "")
        << (f.is_static ? "" : "((") << klass_cast_name << (f.is_static ? "." : ")ws.Target).") << string
        << "(" << (native_argument_invocation % ", ") << ");\n"
        << indent << scope_tab << scope_tab << "}\n"
        << indent << scope_tab << scope_tab << "catch (Exception e)\n"
        << indent << scope_tab << scope_tab << "{\n"
        << indent << scope_tab << scope_tab << scope_tab << "Eina.Log.Warning($\"Callback error: {e.ToString()}\");\n"
        << indent << scope_tab << scope_tab << scope_tab << "Eina.Error.Set(Eina.Error.UNHANDLED_EXCEPTION);\n"
        << indent << scope_tab << scope_tab << "}\n\n"
        << eolian_mono::native_function_definition_epilogue(*klass) << "\n"
        << indent << scope_tab << "}\n"
        << indent << scope_tab << "else\n"
        << indent << scope_tab << "{\n"
        << indent << scope_tab << scope_tab << (return_type != "void" ? "return " : "") << string
        << "_ptr.Value.Delegate(" << self << ((!f.is_static && f.parameters.size() > 0) ? ", " : "") << (argument % ", ") << ");\n"
        << indent << scope_tab << "}\n"
        << indent << "}\n\n"
       )
       .generate(sink, std::make_tuple(f.return_type, escape_keyword(f.name), f.parameters
                                       , /***/f.c_name/***/
                                       , f
                                       , name_helpers::managed_method_name(f)
                                       , f.parameters
                                       , f
                                       , f.c_name
                                       , f.parameters
                                      )
                 , context))
      return false;

    // Static functions do not need to be called from C
    if (f.is_static)
      return true;

    // This is the delegate that will be passed to Eo to be called from C.
    if(!as_generator(
            indent << "private static " << f.c_name << "_delegate " << f.c_name << "_static_delegate;\n\n"
        ).generate(sink, attributes::unused, context))
      return false;

    return true;
  }
};
  
struct function_definition_generator
{
  function_definition_generator(bool do_super = false)
    : do_super(do_super)
  {}

  template <typename OutputIterator, typename Context>
  bool generate(OutputIterator sink, attributes::function_def const& f, Context const& context) const
  {
    EINA_CXX_DOM_LOG_DBG(eolian_mono::domain) << "function_definition_generator: " << f.c_name << std::endl;
    if(blacklist::is_function_blacklisted(f, context))
      return true;

    std::string return_type;
    if(!as_generator(eolian_mono::type(true)).generate(std::back_inserter(return_type), f.return_type, context))
      return false;

    if(!as_generator
       (documentation(1)).generate(sink, f, context))
      return false;

    std::string self = "this.NativeHandle";

    // IsGeneratedBindingClass is set in the constructor, true if this
    // instance is from a pure C# class (not generated).
    if (do_super && !f.is_static)
      self = "(IsGeneratedBindingClass ? " + self + " : Efl.Eo.Globals.efl_super(" + self + ", this.NativeClass))";
    else if (f.is_static)
      self = "";

    if(!as_generator
       (scope_tab << ((do_super && !f.is_static) ? "virtual " : "") << eolian_mono::function_scope_get(f) << (f.is_static ? "static " : "") << return_type << " " << string << "(" << (parameter % ", ")
        << ") {\n "
        << eolian_mono::function_definition_preamble()
        << klass_full_native_inherit_name(f.klass) << "." << string << "_ptr.Value.Delegate("
        << self
        << ((!f.is_static && (f.parameters.size() > 0)) ? "," : "")
        << (argument_invocation % ", ") << ");\n"
        << eolian_mono::function_definition_epilogue()
        << " }\n")
       .generate(sink, std::make_tuple(name_helpers::managed_method_name(f), f.parameters, f, f.c_name, f.parameters, f), context))
      return false;

    return true;
  }

  bool do_super;
};

struct function_definition_parameterized
{
  function_definition_generator operator()(bool do_super) const
  {
    return {do_super};
  }
} const function_definition;
function_definition_generator as_generator(function_definition_parameterized)
{
  return {};
}
struct native_function_definition_parameterized
{
  native_function_definition_generator operator()(attributes::klass_def const& klass) const
  {
    return {&klass};
  }
} const native_function_definition;

struct property_wrapper_definition_generator
{
   template<typename OutputIterator, typename Context>
   bool generate(OutputIterator sink, attributes::property_def const& property, Context const& context) const
   {
      if (blacklist::is_property_blacklisted(property, *implementing_klass, context))
        return true;

      bool interface = context_find_tag<class_context>(context).current_wrapper_kind == class_context::interface;
      bool is_static = (property.getter.is_engaged() && property.getter->is_static)
                       || (property.setter.is_engaged() && property.setter->is_static);


      if (interface && is_static)
        return true;

      auto get_params = property.getter.is_engaged() ? property.getter->parameters.size() : 0;
      auto set_params = property.setter.is_engaged() ? property.setter->parameters.size() : 0;

      // C# properties must have a single value.
      //
      // Single values in getters are automatically converted to return_type,
      // meaning they should have 0 parameters.
      //
      // For setters, we ignore the return type - usually boolean.
      if (get_params > 0 || set_params > 1)
        return true;

      attributes::type_def prop_type;

      if (property.getter.is_engaged())
        prop_type = property.getter->return_type;
      else if (property.setter.is_engaged())
        prop_type = property.setter->parameters[0].type;
      else
        {
           EINA_CXX_DOM_LOG_ERR(eolian_mono::domain) << "Property must have either a getter or a setter." << std::endl;
           return false;
        }

      std::string dir_mod;
      if (property.setter.is_engaged())
        dir_mod = direction_modifier(property.setter->parameters[0]);

      std::string managed_name = name_helpers::property_managed_name(property);

      std::string scope = "public ";
      std::string get_scope = property.getter.is_engaged() ? eolian_mono::function_scope_get(*property.getter) : "";
      std::string set_scope = property.setter.is_engaged() ? eolian_mono::function_scope_get(*property.setter) : "";
      if (interface)
        {
           scope = "";
           get_scope = "";
           set_scope = "";
        }
      else if ((property.klass.type == attributes::class_type::mixin) ||
               (property.klass.type == attributes::class_type::interface_))
        {
           get_scope = "";
           set_scope = "";
        }
      else if ((get_scope != "") && (get_scope == set_scope))
        {
           scope = get_scope;
           get_scope = "";
           set_scope = "";
        }
      else if (!property.setter.is_engaged() || (get_scope == scope))
        {
           scope = get_scope;
           get_scope = "";
        }
      else if (!property.getter.is_engaged() || (set_scope == scope))
        {
           scope = set_scope;
           set_scope = "";
        }

      if (!as_generator(
                  documentation(1)
                  << scope_tab << scope << (is_static ? "static " : "") << type(true) << " " << managed_name << " {\n"
            ).generate(sink, std::make_tuple(property, prop_type), context))
        return false;

      if (property.getter.is_engaged())
        if (!as_generator(scope_tab << scope_tab << get_scope << "get " << (interface ? ";" : "{ return " + name_helpers::managed_method_name(*property.getter) + "(); }") << "\n"
            ).generate(sink, attributes::unused, context))
          return false;

      if (property.setter.is_engaged())
        if (!as_generator(scope_tab << scope_tab << set_scope <<  "set " << (interface ? ";" : "{ " + name_helpers::managed_method_name(*property.setter) + "(" + dir_mod + "value); }") << "\n"
            ).generate(sink, attributes::unused, context))
          return false;

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

      return true;
   }
   attributes::klass_def const* implementing_klass;
};
struct property_wrapper_definition_parameterized
{
  property_wrapper_definition_generator operator()(attributes::klass_def const& klass) const
  {
     return {&klass};
  }
} const property_wrapper_definition;
property_wrapper_definition_generator as_generator(property_wrapper_definition_parameterized)
{
   return {};
}

}

namespace efl { namespace eolian { namespace grammar {

template <>
struct is_eager_generator< ::eolian_mono::function_definition_generator> : std::true_type {};
template <>
struct is_eager_generator< ::eolian_mono::native_function_definition_generator> : std::true_type {};
template <>
struct is_eager_generator< ::eolian_mono::property_wrapper_definition_generator> : std::true_type {};
template <>
struct is_eager_generator< ::eolian_mono::property_wrapper_definition_parameterized> : std::true_type {};
template <>
struct is_generator< ::eolian_mono::function_definition_generator> : std::true_type {};
template <>
struct is_generator< ::eolian_mono::native_function_definition_generator> : std::true_type {};
template <>
struct is_generator< ::eolian_mono::function_definition_parameterized> : std::true_type {};
template <>
struct is_generator< ::eolian_mono::property_wrapper_definition_generator> : std::true_type {};
template <>
struct is_generator< ::eolian_mono::property_wrapper_definition_parameterized> : std::true_type {};

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

template <>
struct attributes_needed< ::eolian_mono::function_definition_parameterized> : std::integral_constant<int, 1> {};

template <>
struct attributes_needed< ::eolian_mono::native_function_definition_generator> : std::integral_constant<int, 1> {};

template <>
struct attributes_needed< ::eolian_mono::property_wrapper_definition_generator> : std::integral_constant<int, 1> {};
template <>
struct attributes_needed< ::eolian_mono::property_wrapper_definition_parameterized> : std::integral_constant<int, 1> {};
}
      
} } }

#endif