Fixed the generation of internals for template specialisations.

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

Author: ddobrev

src/AST/ClassExtensions.cs

@@ -137,9 +137,7 @@ public static bool HasRefBase(this Class @class)
             if (@class.HasBaseClass)
                 @base = @class.Bases[0].Class;
 
-            var hasRefBase = @base != null && @base.IsRefType && @base.IsGenerated;
-
-            return hasRefBase;
+            return @base?.IsRefType == true && @base.IsGenerated;
         }
 
         public static IEnumerable<TranslationUnit> GetGenerated(this IEnumerable<TranslationUnit> units)
@@ -150,8 +148,7 @@ public static IEnumerable<TranslationUnit> GetGenerated(this IEnumerable<Transla
         public static List<ClassTemplateSpecialization> GetSpecializationsToGenerate(
             this Class classTemplate)
         {
-            if (classTemplate.Fields.Any(
-                f => f.Type.Desugar() is TemplateParameterType))
+            if (classTemplate.HasDependentValueFieldInLayout())
                 return classTemplate.Specializations;
 
             var specializations = new List<ClassTemplateSpecialization>();
@@ -162,5 +159,30 @@ public static List<ClassTemplateSpecialization> GetSpecializationsToGenerate(
                 specializations.Add(specialization);
             return specializations;
         }
+
+        public static bool HasDependentValueFieldInLayout(this Class @class)
+        {
+            if (@class.Fields.Any(f => IsValueDependent(f.Type)))
+                return true;
+
+            return @class.Bases.Where(b => b.IsClass).Select(
+                b => b.Class).Any(HasDependentValueFieldInLayout);
+        }
+
+        private static bool IsValueDependent(Type type)
+        {
+            var desugared = type.Desugar();
+            if (desugared is TemplateParameterType)
+                return true;
+            var tagType = desugared as TagType;
+            if (tagType?.IsDependent == true)
+                return true;
+            var templateType = desugared as TemplateSpecializationType;
+            if (templateType?.Arguments.Any(
+                a => a.Type.Type?.Desugar().IsDependent == true) == true)
+                return true;
+            var arrayType = desugared as ArrayType;
+            return arrayType != null && IsValueDependent(arrayType.Type);
+        }
     }
 }

src/CppParser/Bindings/CSharp/i686-apple-darwin12.4.0/CppSharp.CppParser.cs

@@ -1,7 +1,7 @@
 #include <string>
 
 
+template __attribute__((visibility("default"))) std::allocator<char>::allocator() noexcept;
 template __attribute__((visibility("default"))) std::basic_string<char, std::char_traits<char>, std::allocator<char>>::basic_string(const std::basic_string<char, std::char_traits<char>, std::allocator<char>>::value_type*, const std::basic_string<char, std::char_traits<char>, std::allocator<char>>::allocator_type&);
 template __attribute__((visibility("default"))) std::basic_string<char, std::char_traits<char>, std::allocator<char>>::~basic_string() noexcept;
 template __attribute__((visibility("default"))) const std::basic_string<char, std::char_traits<char>, std::allocator<char>>::value_type* std::basic_string<char, std::char_traits<char>, std::allocator<char>>::c_str() const noexcept;
-template __attribute__((visibility("default"))) std::allocator<char>::allocator() noexcept;