csharp: Make GetPart public.

Summary:
`efl_part_get` is protected in C due to the presence of `efl_part`,
which does automatic refcount management in single method calls.

The C# binding has no limitation on this as it already handles the
lifetime for all objects.

Fixes T8462

Reviewers: brunobelo, segfaultxavi, SanghyeonLee

Reviewed By: SanghyeonLee

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Maniphest Tasks: T8462

Differential Revision: https://phab.enlightenment.org/D10594

src/bin/eolian_mono/eolian/mono/function_helpers.hh

@@ -187,6 +187,11 @@ inline std::string function_scope_get(attributes::function_def const& f)
      case attributes::member_scope::scope_private:
        return "private ";
      case attributes::member_scope::scope_protected:
+       // Efl.Part.part.get is protected in C to force developers to use `efl_part`.
+       // There is no such restriction in C# as the binding takes care of the returned
+       // object lifetime.
+       if (f.c_name == "efl_part_get")
+         return "public ";
        return "protected ";
      case attributes::member_scope::scope_unknown:
        // This should trigger a compilation error

src/tests/efl_mono/Parts.cs

@@ -81,6 +81,20 @@ public static class TestMVVMParts
     }
 }
 
+public static class TestNamedParts
+{
+    public static void named_parts()
+    {
+        var obj = new Dummy.PartHolder();
+        var p1 = obj.GetPart("one");
+        var p2 = obj.GetPart("two");
+        Test.Assert(p1 is Dummy.TestObject);
+        Test.AssertEquals("part_one", p1.GetName());
+        Test.Assert(p2 is Dummy.TestObject);
+        Test.AssertEquals("part_two", p2.GetName());
+    }
+}
+
 #endif
 
 }