Added a massively improved C# backend that is based on the binding logic of the CLI backend.

src/Bridge/Type.cs

@@ -138,6 +138,11 @@ namespace Cxxi
     /// </summary>
     public struct QualifiedType
     {
+        public QualifiedType(Type type) : this()
+        {
+            Type = type;
+        }
+
         public Type Type { get; set; }
         public TypeQualifiers Qualifiers { get; set; }
 
@@ -402,7 +407,8 @@ namespace Cxxi
         Int64,
         UInt64,
         Float,
-        Double
+        Double,
+        IntPtr
     }
 
     /// <summary>

src/Generator/Generators/CSharp/CSharpMarshal.cs

@@ -0,0 +1,555 @@
+using System.Text;
+using Cxxi.Generators.CLI;
+using Cxxi.Types;
+
+namespace Cxxi.Generators.CSharp
+{
+    public class CSharpMarshalContext : MarshalContext
+    {
+        public CSharpMarshalContext(Driver driver)
+            : base(driver)
+        {
+            Cleanup = new TextGenerator();
+        }
+
+        public TextGenerator Cleanup { get; private set; }
+    }
+
+    public abstract class CSharpMarshalPrinter : MarshalPrinter
+    {
+        public CSharpMarshalContext CSharpContext
+        {
+            get { return Context as CSharpMarshalContext; }
+        }
+
+        protected CSharpMarshalPrinter(CSharpMarshalContext context)
+            : base(context)
+        {
+            
+        }
+    }
+
+    public class CSharpMarshalNativeToManagedPrinter : CSharpMarshalPrinter
+    {
+        public CSharpMarshalNativeToManagedPrinter(CSharpMarshalContext context)
+            : base(context)
+        {
+            Context.MarshalToManaged = this;
+        }
+
+        public override bool VisitTagType(TagType tag, TypeQualifiers quals)
+        {
+            var decl = tag.Declaration;
+            return decl.Visit(this);
+        }
+
+        public override bool VisitArrayType(ArrayType array, TypeQualifiers quals)
+        {
+            switch (array.SizeType)
+            {
+                case ArrayType.ArraySize.Constant:
+                    Context.Return.Write("null");
+                    break;
+                case ArrayType.ArraySize.Variable:
+                    Context.Return.Write("null");
+                    break;
+            }
+
+            return true;
+        }
+
+        public override bool VisitFunctionType(FunctionType function, TypeQualifiers quals)
+        {
+            var returnType = function.ReturnType;
+            return returnType.Visit(this, quals);
+        }
+
+        public override bool VisitPointerType(PointerType pointer, TypeQualifiers quals)
+        {
+            var pointee = pointer.Pointee;
+
+            if (pointee.IsPrimitiveType(PrimitiveType.Void, walkTypedefs: true))
+            {
+                Context.Return.Write("new IntPtr({0})", Context.ReturnVarName);
+                return true;
+            }
+
+            if (pointee.IsPrimitiveType(PrimitiveType.Char))
+            {
+                Context.Return.Write("Marshal.StringToHGlobalAnsi({0})",
+                             Context.ReturnVarName);
+                return true;
+            }
+
+            PrimitiveType primitive;
+            if (pointee.IsPrimitiveType(out primitive, walkTypedefs: true))
+            {
+                Context.Return.Write("new IntPtr({0})", Context.ReturnVarName);
+                return true;
+            }
+
+            if (!pointee.Visit(this, quals))
+                return false;
+
+            return true;
+        }
+
+        public override bool VisitMemberPointerType(MemberPointerType member,
+            TypeQualifiers quals)
+        {
+            return false;
+        }
+
+        public override bool VisitBuiltinType(BuiltinType builtin, TypeQualifiers quals)
+        {
+            return VisitPrimitiveType(builtin.Type);
+        }
+
+        public bool VisitPrimitiveType(PrimitiveType primitive)
+        {
+            switch (primitive)
+            {
+                case PrimitiveType.Void:
+                    return true;
+                case PrimitiveType.Bool:
+                case PrimitiveType.Int8:
+                case PrimitiveType.UInt8:
+                case PrimitiveType.Int16:
+                case PrimitiveType.UInt16:
+                case PrimitiveType.Int32:
+                case PrimitiveType.UInt32:
+                case PrimitiveType.Int64:
+                case PrimitiveType.UInt64:
+                case PrimitiveType.Float:
+                case PrimitiveType.Double:
+                    Context.Return.Write(Context.ReturnVarName);
+                    return true;
+                case PrimitiveType.WideChar:
+                    return false;
+            }
+
+            return false;
+        }
+
+        public override bool VisitTypedefType(TypedefType typedef, TypeQualifiers quals)
+        {
+            var decl = typedef.Declaration;
+
+            TypeMap typeMap = null;
+            if (Context.Driver.TypeDatabase.FindTypeMap(decl, out typeMap))
+            {
+                typeMap.Type = typedef;
+                typeMap.CLIMarshalToManaged(Context);
+                return typeMap.IsValueType;
+            }
+
+            FunctionType function;
+            if (decl.Type.IsPointerTo(out function))
+            {
+                Context.Return.Write("safe_cast<{0}>(", typedef);
+                Context.Return.Write("System::Runtime::InteropServices::Marshal::");
+                Context.Return.Write("GetDelegateForFunctionPointer(");
+                Context.Return.Write("IntPtr({0}), {1}::typeid))", Context.ReturnVarName,
+                    typedef.ToString().TrimEnd('^'));
+                return true;
+            }
+
+            return decl.Type.Visit(this);
+        }
+
+        public override bool VisitTemplateSpecializationType(TemplateSpecializationType template,
+                                                    TypeQualifiers quals)
+        {
+            TypeMap typeMap;
+            if (Context.Driver.TypeDatabase.FindTypeMap(template, out typeMap))
+            {
+                typeMap.Type = template;
+                typeMap.CSharpMarshalToManaged(Context);
+                return true;
+            }
+
+            return template.Template.Visit(this);
+        }
+
+        public override bool VisitClassDecl(Class @class)
+        {
+            var instance = string.Empty;
+
+            if (!Context.ReturnType.IsPointer())
+                instance += "&";
+
+            instance += Context.ReturnVarName;
+
+            WriteClassInstance(@class, instance);
+            return true;
+        }
+
+        public string QualifiedIdentifier(Declaration decl)
+        {
+            if (Context.Driver.Options.GenerateLibraryNamespace)
+                return string.Format("{0}::{1}", Context.Driver.Options.OutputNamespace,
+                    decl.QualifiedName);
+            return string.Format("{0}", decl.QualifiedName);
+        }
+
+        public void WriteClassInstance(Class @class, string instance)
+        {
+            if (@class.IsRefType)
+                Context.Return.Write("gcnew ");
+
+            Context.Return.Write("{0}(", QualifiedIdentifier(@class));
+            Context.Return.Write("(::{0}*)", @class.QualifiedOriginalName);
+            Context.Return.Write("{0})", instance);
+        }
+
+        public override bool VisitFieldDecl(Field field)
+        {
+            return field.Type.Visit(this);
+        }
+
+        public override bool VisitParameterDecl(Parameter parameter)
+        {
+            return parameter.Type.Visit(this, parameter.QualifiedType.Qualifiers);
+        }
+
+        public override bool VisitEnumDecl(Enumeration @enum)
+        {
+            Context.Return.Write("({0}){1}", ToCLITypeName(@enum),
+                Context.ReturnVarName);
+            return true;
+        }
+
+        public override bool VisitVariableDecl(Variable variable)
+        {
+            return variable.Type.Visit(this, variable.QualifiedType.Qualifiers);
+        }
+
+        private string ToCLITypeName(Declaration decl)
+        {
+            var typePrinter = new CLITypePrinter(Context.Driver);
+            return typePrinter.VisitDeclaration(decl);
+        }
+
+        public override bool VisitClassTemplateDecl(ClassTemplate template)
+        {
+            return template.TemplatedClass.Visit(this);
+        }
+    }
+
+    public class CSharpMarshalManagedToNativePrinter : CSharpMarshalPrinter
+    {
+        public CSharpMarshalManagedToNativePrinter(CSharpMarshalContext context)
+            : base(context)
+        {
+            Context.MarshalToNative = this;
+        }
+
+        public override bool VisitFunctionType(FunctionType function, TypeQualifiers quals)
+        {
+            var returnType = function.ReturnType;
+            return returnType.Visit(this, quals);
+        }
+
+        public bool VisitDelegateType(FunctionType function, string type)
+        {
+            // We marshal function pointer types by calling
+            // GetFunctionPointerForDelegate to get a native function
+            // pointer ouf of the delegate. Then we can pass it in the
+            // native call. Since references are not tracked in the
+            // native side, we need to be careful and protect it with an
+            // explicit GCHandle if necessary.
+
+            var sb = new StringBuilder();
+            sb.AppendFormat("static_cast<::{0}>(", type);
+            sb.Append("System::Runtime::InteropServices::Marshal::");
+            sb.Append("GetFunctionPointerForDelegate(");
+            sb.AppendFormat("{0}).ToPointer())", Context.Parameter.Name);
+            Context.Return.Write(sb.ToString());
+
+            return true;
+        }
+
+        public override bool VisitPointerType(PointerType pointer, TypeQualifiers quals)
+        {
+            var pointee = pointer.Pointee;
+
+            var isVoidPtr = pointee.IsPrimitiveType(PrimitiveType.Void,
+                walkTypedefs: true);
+
+            var isUInt8Ptr = pointee.IsPrimitiveType(PrimitiveType.UInt8,
+                walkTypedefs: true);
+
+            if (isVoidPtr || isUInt8Ptr)
+            {
+                if (isUInt8Ptr)
+                    Context.Return.Write("({0})", "uint8*");
+                Context.Return.Write("{0}.ToPointer()", Context.Parameter.Name);
+                return true;
+            }
+
+            if (pointee.IsPrimitiveType(PrimitiveType.Char) ||
+                pointee.IsPrimitiveType(PrimitiveType.WideChar))
+            {
+                Context.Return.Write("Marshal.StringToHGlobalAnsi({0})",
+                    Context.Parameter.Name);
+                CSharpContext.Cleanup.WriteLine("Marshal.FreeHGlobal({0});",
+                    Context.ArgName);
+                return true;
+            }
+
+            if (pointee is FunctionType)
+            {
+                var function = pointee as FunctionType;
+                // TODO: We have to translate the function type typedef to C/C++
+                return VisitDelegateType(function, function.ToString());
+            }
+
+            Class @class;
+            if (pointee.IsTagDecl(out @class))
+            {
+                if (@class.IsRefType)
+                    Context.Return.Write("{0}.Instance", Context.Parameter.Name);
+                else
+                    Context.Return.Write("new IntPtr(&{0})", Context.Parameter.Name);
+                return true;
+            }
+
+            return pointee.Visit(this, quals);
+        }
+
+        public override bool VisitMemberPointerType(MemberPointerType member,
+            TypeQualifiers quals)
+        {
+            return false;
+        }
+
+        public override bool VisitBuiltinType(BuiltinType builtin, TypeQualifiers quals)
+        {
+            return VisitPrimitiveType(builtin.Type);
+        }
+
+        public bool VisitPrimitiveType(PrimitiveType primitive)
+        {
+            switch (primitive)
+            {
+                case PrimitiveType.Void:
+                    return true;
+                case PrimitiveType.Bool:
+                case PrimitiveType.Int8:
+                case PrimitiveType.UInt8:
+                case PrimitiveType.Int16:
+                case PrimitiveType.UInt16:
+                case PrimitiveType.Int32:
+                case PrimitiveType.UInt32:
+                case PrimitiveType.Int64:
+                case PrimitiveType.UInt64:
+                case PrimitiveType.Float:
+                case PrimitiveType.Double:
+                    Context.Return.Write(Context.Parameter.Name);
+                    return true;
+                case PrimitiveType.WideChar:
+                    return false;
+            }
+
+            return false;
+        }
+
+        public override bool VisitTypedefType(TypedefType typedef, TypeQualifiers quals)
+        {
+            var decl = typedef.Declaration;
+
+            TypeMap typeMap = null;
+            if (Context.Driver.TypeDatabase.FindTypeMap(decl, out typeMap))
+            {
+                typeMap.CSharpMarshalToNative(Context);
+                return typeMap.IsValueType;
+            }
+
+            FunctionType func;
+            if (decl.Type.IsPointerTo<FunctionType>(out func))
+            {
+                VisitDelegateType(func, typedef.Declaration.OriginalName);
+                return true;
+            }
+
+            PrimitiveType primitive;
+            if (decl.Type.IsPrimitiveType(out primitive, walkTypedefs: true))
+            {
+                Context.Return.Write("({0})", typedef.Declaration.Name);
+            }
+
+            return decl.Type.Visit(this);
+        }
+
+        public override bool VisitTemplateSpecializationType(TemplateSpecializationType template,
+                                                    TypeQualifiers quals)
+        {
+            TypeMap typeMap = null;
+            if (Context.Driver.TypeDatabase.FindTypeMap(template, out typeMap))
+            {
+                typeMap.Type = template;
+                typeMap.CSharpMarshalToNative(Context);
+                return true;
+            }
+
+            return template.Template.Visit(this);
+        }
+
+        public override bool VisitTemplateParameterType(TemplateParameterType param, TypeQualifiers quals)
+        {
+            Context.Return.Write(param.Parameter.Name);
+            return true;
+        }
+
+        public override bool VisitClassDecl(Class @class)
+        {
+            if (@class.IsValueType)
+            {
+                MarshalValueClass(@class);
+            }
+            else
+            {
+                MarshalRefClass(@class);
+            }
+
+            return true;
+        }
+
+        private void MarshalRefClass(Class @class)
+        {
+            TypeMap typeMap = null;
+            if (Context.Driver.TypeDatabase.FindTypeMap(@class, out typeMap))
+            {
+                typeMap.CLIMarshalToNative(Context);
+                return;
+            }
+
+            var method = Context.Function as Method;
+            if (method != null
+                && method.Conversion == MethodConversionKind.FunctionToInstanceMethod
+                && Context.ParameterIndex == 0)
+            {
+                Context.Return.Write("Instance");
+                return;
+            }
+
+            if (Context.Parameter.Type.IsPointer())
+                Context.Return.Write("{0}.Instance", Context.Parameter.Name);
+            else
+                Context.Return.Write("{0}", Context.Parameter.Name);
+        }
+
+        private void MarshalValueClass(Class @class)
+        {
+
+            var marshalVar = "_marshal" + Context.ParameterIndex++;
+
+            Context.SupportBefore.WriteLine("auto {0} = ::{1}();", marshalVar,
+                @class.QualifiedOriginalName);
+
+            MarshalValueClassFields(@class, marshalVar);
+
+            Context.Return.Write(marshalVar);
+        }
+
+        private void MarshalValueClassFields(Class @class, string marshalVar)
+        {
+            foreach (var @base in @class.Bases)
+            {
+                if (!@base.IsClass || @base.Class.Ignore)
+                    continue;
+
+                var baseClass = @base.Class;
+                MarshalValueClassFields(baseClass, marshalVar);
+            }
+
+            foreach (var field in @class.Fields)
+            {
+                if (field.Ignore)
+                    continue;
+
+                MarshalValueClassField(field, marshalVar);
+            }
+        }
+
+        private void MarshalValueClassField(Field field, string marshalVar)
+        {
+            var fieldRef = string.Format("{0}.{1}", Context.Parameter.Name,
+                                         field.Name);
+
+            var marshalCtx = new MarshalContext(Context.Driver)
+            {
+                ArgName = fieldRef,
+                ParameterIndex = Context.ParameterIndex++
+            };
+
+            var marshal = new CLIMarshalManagedToNativePrinter(marshalCtx);
+            field.Visit(marshal);
+
+            Context.ParameterIndex = marshalCtx.ParameterIndex;
+
+            if (!string.IsNullOrWhiteSpace(marshal.Context.SupportBefore))
+                Context.SupportBefore.Write(marshal.Context.SupportBefore);
+
+            if (field.Type.IsPointer())
+            {
+                Context.SupportBefore.WriteLine("if ({0} != nullptr)", fieldRef);
+                Context.SupportBefore.PushIndent();
+            }
+
+            Context.SupportBefore.WriteLine("{0}.{1} = {2};", marshalVar, field.OriginalName,
+                                    marshal.Context.Return);
+
+            if (field.Type.IsPointer())
+                Context.SupportBefore.PopIndent();
+        }
+
+        public override bool VisitFieldDecl(Field field)
+        {
+            Context.Parameter = new Parameter
+            {
+                Name = Context.ArgName,
+                QualifiedType = field.QualifiedType
+            };
+
+            return field.Type.Visit(this);
+        }
+
+        public override bool VisitParameterDecl(Parameter parameter)
+        {
+            var paramType = parameter.Type;
+
+            Class @class;
+            if (paramType.Desugar().IsTagDecl(out @class))
+            {
+                if (@class.IsRefType)
+                {
+                    Context.Return.Write(
+                        "*({0}.Internal*){1}.Instance.ToPointer()",
+                        @class.Name, parameter.Name);
+                    return true;
+                }
+                else
+                {
+                    Context.Return.Write("*({0}.Internal*)&{1}",
+                        @class.Name, parameter.Name);
+                    return true;
+                }
+            }
+
+            return paramType.Visit(this);
+        }
+
+        public override bool VisitEnumDecl(Enumeration @enum)
+        {
+            Context.Return.Write("(::{0}){1}", @enum.QualifiedOriginalName,
+                         Context.Parameter.Name);
+            return true;
+        }
+
+        public override bool VisitClassTemplateDecl(ClassTemplate template)
+        {
+            return template.TemplatedClass.Visit(this);
+        }
+    }
+}

src/Generator/Generators/CSharp/CSharpTextTemplate.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
 using Cxxi.Types;
 
@@ -9,12 +10,19 @@ namespace Cxxi.Generators.CSharp
     {
         public ITypePrinter TypePrinter { get; set; }
 
+        public override string FileExtension
+        {
+            get { return "cs"; }
+        }
+
         public CSharpTextTemplate(Driver driver, TranslationUnit unit)
             : base(driver, unit)
         {
             TypePrinter = new CSharpTypePrinter(driver.TypeDatabase, driver.Library);
         }
 
+        #region Identifiers
+
         // from https://github.com/mono/mono/blob/master/mcs/class/System/Microsoft.CSharp/CSharpCodeGenerator.cs
         private static string[] keywords = new string[]
             {
@@ -32,6 +40,11 @@ namespace Cxxi.Generators.CSharp
                 "partial", "yield", "where"
             };
 
+        public string GeneratedIdentifier(string id)
+        {
+            return "__" + id;
+        }
+
         public static string SafeIdentifier(string proposedName)
         {
             proposedName =
@@ -39,17 +52,41 @@ namespace Cxxi.Generators.CSharp
             return keywords.Contains(proposedName) ? "@" + proposedName : proposedName;
         }
 
-        public override string FileExtension
+        public string QualifiedIdentifier(Declaration decl)
         {
-            get { return "cs"; }
+            if (Options.GenerateLibraryNamespace)
+                return string.Format("{0}::{1}", Options.OutputNamespace, decl.QualifiedName);
+            return string.Format("{0}", decl.QualifiedName);
+        }
+
+        public static string ToCSharpCallConv(CallingConvention convention)
+        {
+            switch (convention)
+            {
+                case CallingConvention.Default:
+                    return "Winapi";
+                case CallingConvention.C:
+                    return "Cdecl";
+                case CallingConvention.StdCall:
+                    return "StdCall";
+                case CallingConvention.ThisCall:
+                    return "ThisCall";
+                case CallingConvention.FastCall:
+                    return "FastCall";
             }
 
+            return "Winapi";
+        }
+
+        #endregion
+
         public override void Generate()
         {
             GenerateStart();
 
             WriteLine("using System;");
             WriteLine("using System.Runtime.InteropServices;");
+            WriteLine("using System.Security;");
             NewLine();
 
             if (Options.GenerateLibraryNamespace)
@@ -58,7 +95,7 @@ namespace Cxxi.Generators.CSharp
                 WriteStartBraceIndent();
             }
 
-            GenerateDeclarations();
+            GenerateNamespace(TranslationUnit);
 
             if (Options.GenerateLibraryNamespace)
                 WriteCloseBraceIndent();
@@ -78,11 +115,6 @@ namespace Cxxi.Generators.CSharp
             WriteLine("//----------------------------------------------------------------------------");
         }
 
-        public void GenerateDeclarations()
-        {
-            GenerateNamespace(TranslationUnit);
-        }
-
         private void GenerateNamespace(Namespace @namespace)
         {
             bool isGlobalNamespace = @namespace is TranslationUnit;
@@ -142,26 +174,70 @@ namespace Cxxi.Generators.CSharp
                 WriteCloseBraceIndent();
         }
 
-        public void GenerateDeclarationCommon(Declaration T)
+        public void GenerateDeclarationCommon(Declaration decl)
+        {
+            GenerateSummary(decl.BriefComment);
+            GenerateDebug(decl);
+        }
+
+        public void GenerateDebug(Declaration decl)
+        {
+            if (Options.OutputDebug && !String.IsNullOrWhiteSpace(decl.DebugText))
+                WriteLine("// DEBUG: " + decl.DebugText);
+        }
+
+        public void GenerateSummary(string comment)
+        {
+            if (String.IsNullOrWhiteSpace(comment))
+                return;
+
+            WriteLine("/// <summary>");
+            WriteLine("/// {0}", comment);
+            WriteLine("/// </summary>");
+        }
+
+        public void GenerateInlineSummary(string comment)
         {
-            GenerateSummary(T.BriefComment);
+            if (String.IsNullOrWhiteSpace(comment))
-            GenerateDebug(T);
+                return;
+
+            WriteLine("/// <summary>{0}</summary>", comment);
         }
 
         #region Classes
 
         public void GenerateClass(Class @class)
         {
-            if (@class.Ignore) return;
+            if (@class.Ignore || @class.IsIncomplete)
+                return;
+
             GenerateDeclarationCommon(@class);
 
+            if (@class.IsUnion)
+            {
+                // TODO: How to do wrapping of unions?
+                throw new NotImplementedException();
+            }
+
             GenerateClassProlog(@class);
 
             NewLine();
             WriteStartBraceIndent();
 
+            WriteLine("const string DllName = \"{0}.dll\";", Library.Name);
+            NewLine();
+
             if (!@class.IsOpaque)
             {
+                GenerateClassInternals(@class);
+
+                if (ShouldGenerateClassNativeField(@class))
+                {
+                    WriteLine("public System.IntPtr Instance { get; protected set; }");
+                    NewLine();
+                }
+
+                GenerateClassConstructors(@class);
                 GenerateClassFields(@class);
                 GenerateClassMethods(@class);
             }
@@ -169,6 +245,123 @@ namespace Cxxi.Generators.CSharp
             WriteCloseBraceIndent();
         }
 
+        public void GenerateClassInternals(Class @class)
+        {
+            var typePrinter = Type.TypePrinter as CSharpTypePrinter;
+            typePrinter.PushContext(CSharpTypePrinterContextKind.Native);
+
+            WriteLine("[StructLayout(LayoutKind.Explicit, Size = {0})]",
+                @class.Layout.Size);
+
+            WriteLine("internal new struct Internal");
+            WriteStartBraceIndent();
+
+            ResetNewLine();
+
+            foreach (var field in @class.Fields)
+            {
+                NewLineIfNeeded();
+
+                WriteLine("[FieldOffset({0})]", field.OffsetInBytes);
+
+                WriteLine("public {0} {1};", field.Type,
+                    SafeIdentifier(field.OriginalName));
+                NeedNewLine();
+            }
+
+            foreach (var ctor in @class.Constructors)
+            {
+                if (ctor.IsCopyConstructor || ctor.IsMoveConstructor)
+                    continue;
+
+                NewLineIfNeeded();
+
+                GeneratePInvokeMethod(ctor, @class);
+                NeedNewLine();
+            }
+
+            foreach (var method in @class.Methods)
+            {
+                if (CheckIgnoreMethod(@class, method))
+                    continue;
+
+                if (method.IsConstructor)
+                    continue;
+
+                NewLineIfNeeded();
+
+                GeneratePInvokeMethod(method, @class);
+                NeedNewLine();
+            }
+
+            WriteCloseBraceIndent();
+            NewLine();
+
+            typePrinter.PopContext();
+        }
+
+        private void GeneratePInvokeMethod(Method method, Class @class)
+        {
+            GenerateFunction(method, @class);
+        }
+
+        private void GenerateStructMarshaling(Class @class)
+        {
+            GenerateStructMarshalingFields(@class);
+        }
+
+        private void GenerateStructMarshalingFields(Class @class)
+        {
+            foreach (var @base in @class.Bases)
+            {
+                if (!@base.IsClass || @base.Class.Ignore)
+                    continue;
+
+                GenerateStructMarshalingFields(@base.Class);
+            }
+
+            foreach (var field in @class.Fields)
+            {
+                if (CheckIgnoreField(@class, field)) continue;
+
+                var nativeField = string.Format("*({0}*) (native + {1})",
+                    field.Type, field.OffsetInBytes);
+
+                var ctx = new CSharpMarshalContext(Driver)
+                {
+                    ArgName = field.Name,
+                    ReturnVarName = nativeField,
+                    ReturnType = field.Type
+                };
+
+                var marshal = new CSharpMarshalNativeToManagedPrinter(ctx);
+                field.Visit(marshal);
+
+                if (!string.IsNullOrWhiteSpace(marshal.Context.SupportBefore))
+                    Write(marshal.Context.SupportBefore);
+
+                WriteLine("{0} = {1};", field.Name, marshal.Context.Return);
+            }
+        }
+
+        public bool ShouldGenerateClassNativeField(Class @class)
+        {
+            if (!@class.IsRefType)
+                return false;
+
+            Class baseClass = null;
+
+            if (@class.HasBaseClass)
+                baseClass = @class.Bases[0].Class;
+
+            var hasRefBase = baseClass != null && baseClass.IsRefType
+                             && !baseClass.Ignore;
+
+            var hasIgnoredBase = baseClass != null && baseClass.Ignore;
+
+            return !@class.HasBase || !hasRefBase || hasIgnoredBase;
+        }
+
         public void GenerateClassProlog(Class @class)
         {
             if (@class.IsUnion)
@@ -179,34 +372,546 @@ namespace Cxxi.Generators.CSharp
             if (@class.IsAbstract)
                 Write("abstract ");
 
-            Write("class {0}", SafeIdentifier(@class.Name));
+            Write(@class.IsValueType ? "struct " : "class ");
+            Write("{0}", SafeIdentifier(@class.Name));
+
+            var needsBase = @class.HasBase && !@class.IsValueType
+                && !@class.Bases[0].Class.IsValueType
+                && !@class.Bases[0].Class.Ignore;
 
-            if (@class.HasBase)
+            if (needsBase || @class.IsRefType)
-                Write(" : {0}", SafeIdentifier(@class.Bases[0].Class.Name));
+                Write(" : ");
+
+            if (needsBase)
+            {
+                Write("{0}", SafeIdentifier(@class.Bases[0].Class.Name));
+
+                if (@class.IsRefType)
+                    Write(", ");
+            }
+
+            if (@class.IsRefType)
+                Write("IDisposable");
         }
 
         public void GenerateClassFields(Class @class)
         {
+            // Handle value-type inheritance
+            if (@class.IsValueType)
+            {
+                foreach (var @base in @class.Bases)
+                {
+                    Class baseClass;
+                    if (!@base.Type.IsTagDecl(out baseClass))
+                        continue;
+
+                    if (!baseClass.IsValueType || baseClass.Ignore)
+                        continue;
+
+                    GenerateClassFields(baseClass);
+                }
+            }
+
+            ResetNewLine();
+
             foreach (var field in @class.Fields)
             {
-                if (field.Ignore) continue;
+                if (CheckIgnoreField(@class, field)) continue;
+
+                NewLineIfNeeded();
 
+                if (@class.IsRefType)
+                {
+                    GenerateFieldProperty(field);
+                }
+                else
+                {
                     GenerateDeclarationCommon(field);
                     if (@class.IsUnion)
                         WriteLine("[FieldOffset({0})]", field.Offset);
                     WriteLine("public {0} {1};", field.Type, SafeIdentifier(field.Name));
                 }
+
+                NeedNewLine();
+            }
+        }
+
+        private void GenerateFieldProperty(Field field)
+        {
+            var @class = field.Class;
+
+            GenerateDeclarationCommon(field);
+            WriteLine("public {0} {1}", field.Type, SafeIdentifier(field.Name));
+            WriteStartBraceIndent();
+
+            GeneratePropertyGetter(field, @class);
+            NewLine();
+
+            GeneratePropertySetter(field, @class);
+
+            WriteCloseBraceIndent();
+        }
+
+        private string GetPropertyLocation<T>(T decl, Class @class)
+            where T : Declaration, ITypedDecl
+        {
+            if (decl is Variable)
+            {
+                return string.Format("::{0}::{1}",
+                    @class.QualifiedOriginalName, decl.OriginalName);
+            }
+
+            var field = decl as Field;
+            return string.Format("*({0}*) (Instance + {1})", field.Type,
+                field.OffsetInBytes);
+        }
+
+        private void GeneratePropertySetter<T>(T decl, Class @class)
+            where T : Declaration, ITypedDecl
+        {
+            WriteLine("set");
+            WriteStartBraceIndent();
+
+            var param = new Parameter
+            {
+                Name = "value",
+                QualifiedType = decl.QualifiedType
+            };
+
+            var ctx = new CSharpMarshalContext(Driver)
+            {
+                Parameter = param,
+                ArgName = param.Name,
+            };
+
+            var marshal = new CSharpMarshalManagedToNativePrinter(ctx);
+            param.Visit(marshal);
+
+            var variable = GetPropertyLocation(decl, @class);
+
+            if (!string.IsNullOrWhiteSpace(marshal.Context.SupportBefore))
+                Write(marshal.Context.SupportBefore);
+
+            WriteLine("{0} = {1};", variable, marshal.Context.Return);
+
+            WriteCloseBraceIndent();
+        }
+
+        private void GeneratePropertyGetter<T>(T decl, Class @class)
+            where T : Declaration, ITypedDecl
+        {
+            WriteLine("get");
+            WriteStartBraceIndent();
+
+            var variable = GetPropertyLocation(decl, @class);
+
+            var ctx = new CSharpMarshalContext(Driver)
+            {
+                ArgName = decl.Name,
+                ReturnVarName = variable,
+                ReturnType = decl.Type
+            };
+
+            var marshal = new CSharpMarshalNativeToManagedPrinter(ctx);
+            decl.Visit(marshal);
+
+            if (!string.IsNullOrWhiteSpace(marshal.Context.SupportBefore))
+                Write(marshal.Context.SupportBefore);
+
+            WriteLine("return {0};", marshal.Context.Return);
+
+            WriteCloseBraceIndent();
         }
 
         public void GenerateClassMethods(Class @class)
         {
+            ResetNewLine();
+
+            var staticMethods = new List<Method>();
             foreach (var method in @class.Methods)
-                GenerateClassMethod(method, @class);
+            {
+                if (CheckIgnoreMethod(@class, method))
+                    continue;
+
+                if (method.IsConstructor)
+                    continue;
+
+                if (method.IsStatic)
+                {
+                    staticMethods.Add(method);
+                    continue;
+                }
+
+                NewLineIfNeeded();
+                GenerateMethod(method, @class);
+                NeedNewLine();
             }
 
-        public void GenerateClassMethod(Method method, Class @class)
+            ResetNewLine();
+
+            foreach (var method in staticMethods)
             {
-            GenerateFunction(method);
+                NewLineIfNeeded();
+                GenerateMethod(method, @class);
+                NeedNewLine();
+            }
+        }
+
+        #endregion
+
+        #region Constructors
+
+        public void GenerateClassConstructors(Class @class)
+        {
+            // Output a default constructor that takes the native pointer.
+            WriteLine("{0}(System.IntPtr native)", SafeIdentifier(@class.Name));
+            WriteStartBraceIndent();
+
+            if (@class.IsRefType)
+            {
+                if (ShouldGenerateClassNativeField(@class))
+                    WriteLine("Instance = native;");
+            }
+            else
+            {
+                GenerateStructMarshaling(@class);
+            }
+
+            WriteCloseBraceIndent();
+            NewLine();
+
+            foreach (var ctor in @class.Constructors)
+            {
+                if (ctor.IsCopyConstructor || ctor.IsMoveConstructor)
+                    continue;
+
+                // Default constructors are not supported in .NET value types.
+                if (ctor.Parameters.Count == 0 && @class.IsValueType)
+                    continue;
+
+                GenerateMethod(ctor, @class);
+                NewLine();
+            }
+
+            if (@class.IsRefType)
+            {
+                WriteLine("public void Dispose()");
+                WriteStartBraceIndent();
+
+                if (ShouldGenerateClassNativeField(@class))
+                    WriteLine("Marshal.FreeHGlobal(Instance);");
+
+                WriteCloseBraceIndent();
+                NewLine();
+            }
+        }
+
+        private bool GenerateClassConstructorBase(Class @class, Method method)
+        {
+            var hasBase = @class.HasBase && !@class.Bases[0].Class.Ignore;
+
+            if (hasBase && !@class.IsValueType)
+            {
+                PushIndent();
+                Write(": this(", QualifiedIdentifier(@class.Bases[0].Class));
+
+                if (method != null)
+                    Write("IntPtr.Zero");
+                else
+                    Write("native");
+
+                WriteLine(")");
+                PopIndent();
+            }
+
+            return hasBase;
+        }
+
+        #endregion
+
+        #region Methods / Functions
+
+        public void GenerateMethod(Method method, Class @class)
+        {
+            GenerateDeclarationCommon(method);
+
+            Write("public ");
+
+            if (method.Kind == CXXMethodKind.Constructor || method.Kind == CXXMethodKind.Destructor)
+                Write("{0}(", SafeIdentifier(method.Name));
+            else
+                Write("{0} {1}(", method.ReturnType, SafeIdentifier(method.Name));
+
+            GenerateMethodParameters(method);
+
+            WriteLine(")");
+
+            if (method.Kind == CXXMethodKind.Constructor)
+                GenerateClassConstructorBase(@class, method);
+
+            WriteStartBraceIndent();
+
+            if (@class.IsRefType)
+            {
+                if (method.Kind == CXXMethodKind.Constructor)
+                {
+                    if (!@class.IsAbstract)
+                    {
+                        var @params = GenerateFunctionParamsMarshal(method.Parameters, method);
+
+                        WriteLine("Instance = Marshal.AllocHGlobal({0});", @class.Layout.Size);
+                        Write("Internal.{0}(Instance", method.Name);
+                        GenerateFunctionParams(@params);
+                        WriteLine(");");
+                    }
+                }
+                else
+                {
+                    GenerateFunctionCall(method, @class);
+                }
+            }
+            else if (@class.IsValueType)
+            {
+                //if (method.Kind != CXXMethodKind.Constructor)
+                //    GenerateFunctionCall(method, @class);
+                //else
+                //    GenerateValueTypeConstructorCall(method, @class);
+            }
+
+            WriteCloseBraceIndent();
+        }
+
+        public void GenerateFunctionCall(Function function, Class @class = null)
+        {
+            var retType = function.ReturnType;
+            var needsReturn = !retType.IsPrimitiveType(PrimitiveType.Void);
+
+            var isValueType = @class != null && @class.IsValueType;
+            //if (isValueType)
+            //{
+            //    WriteLine("auto this0 = (::{0}*) 0;", @class.QualifiedOriginalName);
+            //}
+
+            if (function.HasHiddenStructParameter)
+            {
+                Class retClass;
+                function.ReturnType.IsTagDecl(out retClass);
+
+                WriteLine("var {0} = new {1}.Internal();", GeneratedIdentifier("udt"),
+                    retClass.OriginalName);
+
+                retType = new BuiltinType(PrimitiveType.Void);
+                needsReturn = false;
+            }
+
+            var @params = GenerateFunctionParamsMarshal(function.Parameters, function);
+
+            var names = (from param in @params
+                         where !param.Param.Ignore
+                         select param.Name).ToList();
+
+            if (function.HasHiddenStructParameter)
+            {
+                var name = string.Format("new IntPtr(&{0})", GeneratedIdentifier("udt"));
+                names.Insert(0, name);
+            }
+
+            var method = function as Method;
+
+            if (method != null && !method.IsStatic)
+                names.Insert(0, "Instance");
+
+            if (needsReturn)
+                Write("var ret = ");
+
+            WriteLine("Internal.{0}({1});", SafeIdentifier(function.OriginalName),
+                string.Join(", ", names));
+
+            var cleanups = new List<TextGenerator>();
+            GenerateFunctionCallOutParams(@params, cleanups);
+
+            foreach (var param in @params)
+            {
+                var context = param.Context;
+                if (context == null) continue;
+
+                if (!string.IsNullOrWhiteSpace(context.Cleanup))
+                    cleanups.Add(context.Cleanup);
+            }
+
+            foreach (var cleanup in cleanups)
+            {
+                Write(cleanup);
+            }
+
+            if (needsReturn)
+            {
+                var ctx = new CSharpMarshalContext(Driver)
+                {
+                    ArgName = "ret",
+                    ReturnVarName = "ret",
+                    ReturnType = retType
+                };
+
+                var marshal = new CSharpMarshalNativeToManagedPrinter(ctx);
+                function.ReturnType.Visit(marshal);
+
+                if (!string.IsNullOrWhiteSpace(marshal.Context.SupportBefore))
+                    Write(marshal.Context.SupportBefore);
+
+                WriteLine("return {0};", marshal.Context.Return);
+            }
+
+            if (function.HasHiddenStructParameter)
+            {
+                Class retClass;
+                function.ReturnType.IsTagDecl(out retClass);
+
+                WriteLine("var ret = new {0}();", retClass.Name);
+
+                if (isValueType)
+                    throw new NotImplementedException();
+                else
+                    WriteLine("*({0}.Internal*) ret.Instance.ToPointer() = {1};",
+                        retClass.Name, GeneratedIdentifier("udt"));
+
+                WriteLine("return ret;");
+            }
+        }
+
+        private void GenerateFunctionCallOutParams(IEnumerable<ParamMarshal> @params,
+            ICollection<TextGenerator> cleanups)
+        {
+            foreach (var paramInfo in @params)
+            {
+                var param = paramInfo.Param;
+                if (param.Usage != ParameterUsage.Out && param.Usage != ParameterUsage.InOut)
+                    continue;
+
+                var nativeVarName = paramInfo.Name;
+
+                var ctx = new CSharpMarshalContext(Driver)
+                {
+                    ArgName = nativeVarName,
+                    ReturnVarName = nativeVarName,
+                    ReturnType = param.Type
+                };
+
+                var marshal = new CSharpMarshalNativeToManagedPrinter(ctx);
+                param.Visit(marshal);
+
+                if (!string.IsNullOrWhiteSpace(marshal.Context.SupportBefore))
+                    Write(marshal.Context.SupportBefore);
+
+                WriteLine("{0} = {1};", param.Name, marshal.Context.Return);
+
+                if (!string.IsNullOrWhiteSpace(marshal.CSharpContext.Cleanup))
+                    cleanups.Add(marshal.CSharpContext.Cleanup);
+            }
+        }
+
+        private static bool IsInstanceFunction(Function function)
+        {
+            var isInstanceFunction = false;
+
+            var method = function as Method;
+            if (method != null)
+                isInstanceFunction = method.Conversion == MethodConversionKind.None;
+            return isInstanceFunction;
+        }
+
+        public struct ParamMarshal
+        {
+            public string Name;
+            public Parameter Param;
+            public CSharpMarshalContext Context;
+        }
+
+        public void GenerateFunctionParams(List<ParamMarshal> @params)
+        {
+            var names = @params.Select(param => param.Name).ToList();
+            Write(string.Join(", ", names));
+        }
+
+        public List<ParamMarshal> GenerateFunctionParamsMarshal(IEnumerable<Parameter> @params,
+                                                                Function function = null)
+        {
+            var marshals = new List<ParamMarshal>();
+
+            var paramIndex = 0;
+            foreach (var param in @params)
+            {
+                marshals.Add(GenerateFunctionParamMarshal(param, paramIndex, function));
+                paramIndex++;
+            }
+
+            return marshals;
+        }
+
+        private ParamMarshal GenerateFunctionParamMarshal(Parameter param, int paramIndex,
+            Function function = null)
+        {
+            if (param.Type is BuiltinType)
+            {
+                return new ParamMarshal { Name = param.Name, Param = param };
+            }
+
+            var argName = "arg" + paramIndex.ToString(CultureInfo.InvariantCulture);
+            var paramMarshal = new ParamMarshal { Name = argName, Param = param };
+
+            if (param.Usage == ParameterUsage.Out)
+            {
+                //var paramType = param.Type;
+                //if (paramType.IsReference())
+                //    paramType = (paramType as PointerType).Pointee;
+
+                //var typePrinter = new CppTypePrinter(Driver.TypeDatabase);
+                //var type = paramType.Visit(typePrinter);
+
+                //WriteLine("{0} {1};", type, argName);
+            }
+            else
+            {
+                var ctx = new CSharpMarshalContext(Driver)
+                {
+                    Parameter = param,
+                    ParameterIndex = paramIndex,
+                    ArgName = argName,
+                    Function = function
+                };
+
+                paramMarshal.Context = ctx;
+
+                var marshal = new CSharpMarshalManagedToNativePrinter(ctx);
+                param.Visit(marshal);
+
+                if (string.IsNullOrEmpty(marshal.Context.Return))
+                    throw new Exception("Cannot marshal argument of function");
+
+                if (!string.IsNullOrWhiteSpace(marshal.Context.SupportBefore))
+                    Write(marshal.Context.SupportBefore);
+
+                WriteLine("var {0} = {1};", argName, marshal.Context.Return);
+            }
+
+            return paramMarshal;
+        }
+
+        private void GenerateMethodParameters(Method method)
+        {
+            var @params = new List<string>();
+
+            for (var i = 0; i < method.Parameters.Count; ++i)
+            {
+                var param = method.Parameters[i];
+
+                if (param.Kind == ParameterKind.HiddenStructureReturn)
+                    continue;
+
+                @params.Add(string.Format("{0} {1}", param.Type, SafeIdentifier(param.Name)));
+            }
+
+            Write(string.Join(", ", @params));
         }
 
         #endregion
@@ -281,70 +986,55 @@ namespace Cxxi.Generators.CSharp
             WriteCloseBraceIndent();
         }
 
-        public void GenerateFunction(Function function)
+        public void GenerateFunction(Function function, Class @class = null)
         {
             if(function.Ignore) return;
             GenerateDeclarationCommon(function);
 
-            Write("[DllImport(\"{0}.dll\", ", SafeIdentifier(Library.SharedLibrary));
+            WriteLine("[SuppressUnmanagedCodeSecurity]");
-            Write("CallingConvention = CallingConvention.{0}, ", ToCSharpCallConv(function.CallingConvention));
-            WriteLine("EntryPoint=\"{0}\")]", function.Mangled);
 
-            Write("public unsafe static extern {0} {1}(", function.ReturnType,
+            Write("[DllImport(\"{0}.dll\", ", Library.SharedLibrary);
-                      SafeIdentifier(function.Name));
+            WriteLine("CallingConvention = CallingConvention.{0}, ",
+                ToCSharpCallConv(function.CallingConvention));
+            WriteLineIndent("EntryPoint=\"{0}\")]", function.Mangled);
 
-            var @params = new List<string>();
+            if (function.ReturnType.Desugar().IsPrimitiveType(PrimitiveType.Bool))
-            for(var i = 0; i < function.Parameters.Count; ++i)
+                WriteLine("[return: MarshalAsAttribute(UnmanagedType.I1)]");
-            {
-                var param = function.Parameters[i];
-                @params.Add(string.Format("{0} {1}", param.Type, SafeIdentifier(param.Name)));
-            }
 
-            Write(string.Join(", ", @params));
+            var @params = new List<string>();
-            WriteLine(");");
-        }
 
-        public static string ToCSharpCallConv(CallingConvention convention)
+            var typePrinter = Type.TypePrinter as CSharpTypePrinter;
+            var retType = typePrinter.VisitParameterDecl(new Parameter()
                 {
-            switch (convention)
+                    QualifiedType = new QualifiedType() { Type = function.ReturnType }
+                });
+
+            var method = function as Method;
+            if (method != null)
             {
-                case CallingConvention.Default:
+                @params.Add("System.IntPtr instance");
-                    return "Winapi";
-                case CallingConvention.C:
-                    return "Cdecl";
-                case CallingConvention.StdCall:
-                    return "StdCall";
-                case CallingConvention.ThisCall:
-                    return "ThisCall";
-                case CallingConvention.FastCall:
-                    return "FastCall";
-            }
 
-            return "Winapi";
+                if (method.IsConstructor && Options.IsMicrosoftAbi)
+                    retType = "System.IntPtr";
             }
 
-        public void GenerateDebug(Declaration decl)
+            for(var i = 0; i < function.Parameters.Count; ++i)
             {
-            if(Options.OutputDebug && !String.IsNullOrWhiteSpace(decl.DebugText))
+                var param = function.Parameters[i];
-                WriteLine("// DEBUG: " + decl.DebugText);
+                var typeName = param.Visit(typePrinter);
-        }
 
-        public void GenerateSummary(string comment)
+                var paramName = param.IsSynthetized ?
-        {
+                    GeneratedIdentifier(param.Name) : SafeIdentifier(param.Name);
-            if(String.IsNullOrWhiteSpace(comment))
-                return;
 
-            WriteLine("/// <summary>");
+                @params.Add(string.Format("{0} {1}", typeName, paramName));
-            WriteLine("/// {0}", comment);
-            WriteLine("/// </summary>");
             }
 
-        public void GenerateInlineSummary(string comment)
+            if (method != null && method.IsConstructor)
-        {
+                if (Options.IsMicrosoftAbi && @class.Layout.HasVirtualBases)
-            if(String.IsNullOrWhiteSpace(comment))
+                    @params.Add("int " + GeneratedIdentifier("forBases"));
-                return;
 
-            WriteLine("/// <summary>{0}</summary>", comment);
+            WriteLine("public unsafe static extern {0} {1}({2});", retType,
+                      SafeIdentifier(function.Name), string.Join(", ", @params));
         }
     }
 }

src/Generator/Generators/CSharp/CSharpTypePrinter.cs

@@ -4,15 +4,55 @@ using Cxxi.Types;
 
 namespace Cxxi.Generators.CSharp
 {
+    public enum CSharpTypePrinterContextKind
+    {
+        Native,
+        Managed
+    }
+
+    public class CSharpTypePrinterContext : TypePrinterContext
+    {
+        public CSharpTypePrinterContext()
+        {
+            
+        }
+
+        public CSharpTypePrinterContext(TypePrinterContextKind kind)
+            : base(kind)
+        {
+            
+        }
+    }
+
     public class CSharpTypePrinter : ITypePrinter, IDeclVisitor<string>
     {
         public Library Library { get; set; }
         private readonly ITypeMapDatabase TypeMapDatabase;
 
+        private readonly Stack<CSharpTypePrinterContextKind> contexts;
+
+        public CSharpTypePrinterContextKind ContextKind
+        {
+            get { return contexts.Peek(); }
+        }
+
         public CSharpTypePrinter(ITypeMapDatabase database, Library library)
         {
             TypeMapDatabase = database;
             Library = library;
+
+            contexts = new Stack<CSharpTypePrinterContextKind>();
+            PushContext(CSharpTypePrinterContextKind.Managed);
+        }
+
+        public void PushContext(CSharpTypePrinterContextKind contextKind)
+        {
+            contexts.Push(contextKind);
+        }
+
+        public CSharpTypePrinterContextKind PopContext()
+        {
+            return contexts.Pop();
         }
 
         public string VisitTagType(TagType tag, TypeQualifiers quals)
@@ -63,15 +103,24 @@ namespace Cxxi.Generators.CSharp
                 return string.Format("{0}", function.Visit(this, quals));
             }
 
+            var isManagedContext = ContextKind == CSharpTypePrinterContextKind.Managed;
+
             if (pointee.IsPrimitiveType(PrimitiveType.Void, walkTypedefs: true) ||
                 pointee.IsPrimitiveType(PrimitiveType.UInt8, walkTypedefs: true))
             {
-                return "IntPtr";
+                return isManagedContext ? "string" : "System.IntPtr";
             }
 
             if (pointee.IsPrimitiveType(PrimitiveType.Char) && quals.IsConst)
             {
-                return "string";
+                return isManagedContext ? "string" : "System.IntPtr";
+            }
+
+            Class @class;
+            if (pointee.IsTagDecl(out @class)
+                && ContextKind == CSharpTypePrinterContextKind.Native)
+            {
+                return "System.IntPtr";
             }
 
             return pointee.Visit(this, quals);
@@ -95,7 +144,9 @@ namespace Cxxi.Generators.CSharp
             TypeMap typeMap;
             if (TypeMapDatabase.FindTypeMap(decl, out typeMap))
             {
-                return typeMap.CSharpSignature();
+                typeMap.Type = typedef;
+                var ctx = new CSharpTypePrinterContext {Type = typedef};
+                return typeMap.CSharpSignature(ctx);
             }
 
             FunctionType func;
@@ -108,12 +159,24 @@ namespace Cxxi.Generators.CSharp
             return decl.Type.Visit(this);
         }
 
-        public string VisitTemplateSpecializationType(TemplateSpecializationType template, TypeQualifiers quals)
+        public string VisitTemplateSpecializationType(TemplateSpecializationType template,
+            TypeQualifiers quals)
         {
-            throw new NotImplementedException();
+            var decl = template.Template.TemplatedDecl;
+
+            TypeMap typeMap = null;
+            if (TypeMapDatabase.FindTypeMap(template, out typeMap))
+            {
+                typeMap.Declaration = decl;
+                typeMap.Type = template;
+                return typeMap.CSharpSignature(new CSharpTypePrinterContext());
             }
 
-        public string VisitTemplateParameterType(TemplateParameterType param, TypeQualifiers quals)
+            return decl.Name;
+        }
+
+        public string VisitTemplateParameterType(TemplateParameterType param,
+            TypeQualifiers quals)
         {
             throw new NotImplementedException();
         }
@@ -135,6 +198,7 @@ namespace Cxxi.Generators.CSharp
                 case PrimitiveType.UInt64: return "ulong";
                 case PrimitiveType.Float: return "float";
                 case PrimitiveType.Double: return "double";
+                case PrimitiveType.IntPtr: return "System.IntPtr";
             }
 
             throw new NotSupportedException();
@@ -173,7 +237,16 @@ namespace Cxxi.Generators.CSharp
 
         public string VisitParameterDecl(Parameter parameter)
         {
-            throw new NotImplementedException();
+            var paramType = parameter.Type;
+
+            Class @class;
+            if (paramType.Desugar().IsTagDecl(out @class)
+                && ContextKind == CSharpTypePrinterContextKind.Native)
+            {
+                return string.Format("{0}.Internal", @class.Name);
+            }
+
+            return paramType.Visit(this);
         }
 
         public string VisitTypedefDecl(TypedefDecl typedef)

src/Generator/Types/TypeMap.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using Cxxi.Generators;
 using Cxxi.Generators.CLI;
+using Cxxi.Generators.CSharp;
 
 namespace Cxxi.Types
 {
@@ -38,7 +39,7 @@ namespace Cxxi.Types
 
         #region C# backend
 
-        public virtual string CSharpSignature()
+        public virtual string CSharpSignature(CSharpTypePrinterContext ctx)
         {
             throw new NotImplementedException();
         }