Overall fixes to C++ generation.

src/Generator/Generators/C/CppHeaders.cs

@@ -145,7 +145,7 @@ namespace CppSharp.Generators.Cpp
             @namespace.Visit(this);
         }
 
-        public void GenerateDeclContext(DeclarationContext decl)
+        public override bool VisitDeclContext(DeclarationContext decl)
         {
             // Generate all the type references for the module.
             foreach (var typeRef in decl.TypeReferences)
@@ -176,6 +176,8 @@ namespace CppSharp.Generators.Cpp
 
             foreach (var childNamespace in decl.Namespaces)
                 childNamespace.Visit(this);
+
+            return true;
         }
 
         public override bool VisitNamespace(Namespace @namespace)
@@ -193,7 +195,7 @@ namespace CppSharp.Generators.Cpp
                 WriteOpenBraceAndIndent();
             }
 
-            GenerateDeclContext(@namespace);
+            VisitDeclContext(@namespace);
 
             if (generateNamespace)
             {
@@ -258,15 +260,13 @@ namespace CppSharp.Generators.Cpp
 
             // Process the nested types.
             Indent();
-            GenerateDeclContext(@class);
+            VisitDeclContext(@class);
             Unindent();
 
-            var nativeType = $"::{@class.QualifiedOriginalName}*";
-
             if (CppGenerator.ShouldGenerateClassNativeField(@class))
-                GenerateClassNativeField(@class, nativeType);
+                GenerateClassNativeField(@class);
 
-            GenerateClassConstructors(@class, nativeType);
+            GenerateClassConstructors(@class);
             GenerateClassProperties(@class);
             GenerateClassEvents(@class);
             GenerateClassMethods(@class.Methods);
@@ -303,8 +303,10 @@ namespace CppSharp.Generators.Cpp
             return true;
         }
 
-        public void GenerateClassNativeField(Class @class, string nativeType)
+        public void GenerateClassNativeField(Class @class)
         {
+            PushBlock();
+
             var nativeInstanceField = new Field()
             {
                 Name = Helpers.InstanceIdentifier,
@@ -313,9 +315,13 @@ namespace CppSharp.Generators.Cpp
             };
 
             Indent();
+            CTypePrinter.PushContext(TypePrinterContextKind.Native);
             nativeInstanceField.Visit(this);
+            CTypePrinter.PopContext();
             Unindent();
 
+            PopBlock(NewLineKind.BeforeNextBlock);
+
             /*var nativeInstanceProperty = new Property()
             {
                 Name = Helpers.InstanceIdentifier,
@@ -329,20 +335,18 @@ namespace CppSharp.Generators.Cpp
         {
         }
 
-        public void GenerateClassConstructors(Class @class, string nativeType)
+        public void GenerateClassConstructors(Class @class)
         {
             if (@class.IsStatic)
                 return;
 
             Indent();
 
-            var classNativeName = @class.Visit(CTypePrinter);
-
             CTypePrinter.PushContext(TypePrinterContextKind.Native);
-            var classManagedName = @class.Visit(CTypePrinter);
+            var classNativeName = @class.Visit(CTypePrinter);
             CTypePrinter.PopContext();
 
-            WriteLine($"{@class.Name}({classManagedName}* native);");
+            WriteLine($"{@class.Name}({classNativeName}* instance);");
             NewLine();
 
             foreach (var ctor in @class.Constructors)
@@ -416,7 +420,8 @@ namespace CppSharp.Generators.Cpp
             GenerateDeclarationCommon(field);
 
             var @class = field.Namespace as Class;
-            WriteLine($"{field.Type} {field.Name};");
+            var fieldType = field.Type.Visit(CTypePrinter);
+            WriteLine($"{fieldType} {field.Name};");
 
             PopBlock();
 

src/Generator/Generators/C/CppMarshal.cs

@@ -236,7 +236,7 @@ namespace CppSharp.Generators.Cpp
             if (@class.IsRefType && needsCopy)
             {
                 var name = Generator.GeneratedIdentifier(Context.ReturnVarName);
-                Context.Before.WriteLine($"auto {name} = {MemoryAllocOperator} ::{0}({1});",
+                Context.Before.WriteLine($"auto {name} = {MemoryAllocOperator} ::{{0}}({{1}});",
                     @class.QualifiedOriginalName, Context.ReturnVarName);
                 instance = name;
             }

src/Generator/Generators/C/CppSources.cs

@@ -39,7 +39,7 @@ namespace CppSharp.Generators.Cpp
             NewLine();
             PopBlock();
 
-            VisitDeclContext(TranslationUnit);
+            VisitNamespace(TranslationUnit);
 
             PushBlock(BlockKind.Footer);
             PopBlock();
@@ -114,7 +114,7 @@ namespace CppSharp.Generators.Cpp
             return true;
         }
 
-        public void GenerateClass(Class @class)
+        public override bool VisitClassDecl(Class @class)
         {
             PushBlock(BlockKind.Class);
 
@@ -144,6 +144,8 @@ namespace CppSharp.Generators.Cpp
             }
 
             PopBlock();
+
+            return true;
         }
 
         public virtual void GenerateClassConstructors(Class @class)
@@ -308,13 +310,14 @@ namespace CppSharp.Generators.Cpp
                 Indent();
 
                 var baseClass = @class.Bases[0].Class;
-                Write(": {0}(", QualifiedIdentifier(baseClass));
+                Write($": {QualifiedIdentifier(baseClass)}(");
 
-                // We cast the value to the base clas type since otherwise there
+                // We cast the value to the base class type since otherwise there
                 // could be ambiguous call to overloaded constructors.
-                var cppTypePrinter = new CppTypePrinter();
+                CTypePrinter.PushContext(TypePrinterContextKind.Native);
-                var nativeTypeName = baseClass.Visit(cppTypePrinter);
+                var nativeTypeName = baseClass.Visit(CTypePrinter);
-                Write("({0}*)", nativeTypeName);
+                CTypePrinter.PopContext();
+                Write($"({nativeTypeName}*)");
 
                 WriteLine("{0})", method != null ? "nullptr" : ClassCtorInstanceParamIdentifier);
 
@@ -437,9 +440,9 @@ namespace CppSharp.Generators.Cpp
             }
 
             var method = function as Method;
-            var field = (method?.AssociatedDeclaration as Property)?.Field;
             var @class = function.Namespace as Class;
 
+            var field = (method?.AssociatedDeclaration as Property)?.Field;
             if (field != null)
             {
                 Write($"((::{@class.QualifiedOriginalName}*){Helpers.InstanceIdentifier})->");

src/Generator/Generators/CodeGenerator.cs

@@ -250,7 +250,7 @@ namespace CppSharp.Generators
 
         public virtual bool VisitTranslationUnit(TranslationUnit unit)
         {
-            return VisitDeclContext(unit);
+            return VisitNamespace(unit);
         }
 
         public virtual bool VisitDeclContext(DeclarationContext context)

src/Generator/Types/TypeMapDatabase.cs

@@ -94,6 +94,8 @@ namespace CppSharp.Types
                 PrintLogicalNames = true
             };
 
+            typePrinter.PushContext(TypePrinterContextKind.Native);
+
             foreach (var resolveTypeDefs in new[] { false, true })
             {
                 foreach (var typePrintScopeKind in