Fix generated wrappers so tests run correctly given current state of runtime component.

+ Tweak access modifiers
+ Add inline method policy option
+ Remove alloc ctor and add native ctor
+ Remove "native_layout" field (now unnecessary with next commit)
+ Correctly add ByVal attribute to return type if applicable

src/Mono.VisualC.Interop/Interfaces.cs

@@ -31,7 +31,13 @@ using Mono.VisualC.Interop.ABI;
 
 namespace Mono.VisualC.Interop {
 
-	// Part of the contract for ICppObject is a public constructor that takes CppInstancePtr (native constructor)
+	// The contract for ICppObject requires implementations to have the following constructors:
+	//  + A public constructor that takes CppInstancePtr (native constructor)
+	//  + A public constructor that takes CppTypeInfo, and as its sole operation,
+	//     calls AddBase on that passed CppTypeInfo, passing its own typeinfo (subclass constructor)
+	//  NOTE: It is important that the subclass constructor have no side effects.
+	//  All constructors for wrappers of native subclasses must call the subclass constructor for the
+	//   wrappers of their base class(es).
 	public interface ICppObject : IDisposable {
 		CppInstancePtr Native { get; }
 	}

src/generator/Class.cs

@@ -76,60 +76,62 @@ class Class
 
 	public CodeTypeDeclaration GenerateClass (Generator g, CodeTypeDeclaration libDecl, string libFieldName) {
 		var decl = new CodeTypeDeclaration (Name);
+		var hasBase = BaseClasses.Count > 0;
 		decl.IsPartial = true;
-		if (BaseClasses.Count > 0)
+
+		if (hasBase)
 			decl.BaseTypes.Add (new CodeTypeReference (BaseClasses [0].Name));
 		else
 			decl.BaseTypes.Add (new CodeTypeReference ("ICppObject"));
 
-		bool hasBase = BaseClasses.Count > 0;
-
-		var layout = new CodeTypeDeclaration ("_" + Name);
-		layout.IsStruct = true;
-		layout.TypeAttributes = TypeAttributes.NotPublic;
+		var layout = new CodeTypeDeclaration ("_" + Name) {
+			IsStruct = true,
+			TypeAttributes = TypeAttributes.NotPublic
+		};
 		decl.Members.Add (layout);
 
 		foreach (var f in Fields) {
-			CodeMemberField field = new CodeMemberField { Name = f.Name, Type = g.CppTypeToCodeDomType (f.Type) };
+			var field = new CodeMemberField {
+				Name = f.Name,
+				Type = g.CppTypeToCodeDomType (f.Type),
+				Attributes = MemberAttributes.Public
+			};
 			layout.Members.Add (field);
 		}
 
 		var iface = new CodeTypeDeclaration ("I" + Name);
 		iface.IsInterface = true;
-		layout.TypeAttributes = TypeAttributes.NotPublic;
 		iface.BaseTypes.Add (new CodeTypeReference ("ICppClassOverridable", new CodeTypeReference [] { new CodeTypeReference (decl.Name) }));
 		decl.Members.Add (iface);
 
-		var layoutField = new CodeMemberField (new CodeTypeReference (typeof (Type)), "native_layout");
-		layoutField.Attributes = MemberAttributes.Private|MemberAttributes.Static;
-		layoutField.InitExpression = new CodeTypeOfExpression (layout.Name);
-		decl.Members.Add (layoutField);
-
-		var implField = new CodeMemberField (new CodeTypeReference (iface.Name), "impl");
-		implField.Attributes = MemberAttributes.Private|MemberAttributes.Static;
+		var implField = new CodeMemberField (new CodeTypeReference (iface.Name), "impl") {
+			Attributes = MemberAttributes.Private | MemberAttributes.Static
+		};
 		var getclass = new CodeMethodReferenceExpression (new CodeFieldReferenceExpression (new CodeTypeReferenceExpression (libDecl.Name), libFieldName), "GetClass", new CodeTypeReference [] { new CodeTypeReference (iface.Name), new CodeTypeReference (layout.Name), new CodeTypeReference (decl.Name) });
 		implField.InitExpression = new CodeMethodInvokeExpression (getclass, new CodeExpression [] { new CodePrimitiveExpression (Name) });
 		decl.Members.Add (implField);
 		//private static IClass impl = global::CppTests.Libs.Test.GetClass <IClass, _Class, Class>("Class");
 
 		if (!hasBase) {
-			var ptrField = new CodeMemberField (new CodeTypeReference ("CppInstancePtr"), "native_ptr");
-			ptrField.Attributes = MemberAttributes.Family;
+			var ptrField = new CodeMemberField (new CodeTypeReference ("CppInstancePtr"), "native_ptr") {
+				Attributes = MemberAttributes.Family
+			};
 			decl.Members.Add (ptrField);
 		}
 
-		var allocCtor = new CodeConstructor () {
+		var nativeCtor = new CodeConstructor () {
+			Attributes = MemberAttributes.Public
 		};
-		allocCtor.Parameters.Add (new CodeParameterDeclarationExpression (new CodeTypeReference ("CppLibrary"), "dummy"));
-		allocCtor.Statements.Add (new CodeAssignStatement (new CodeFieldReferenceExpression (null, "native_ptr"), new CodeMethodInvokeExpression (new CodeMethodReferenceExpression (new CodeFieldReferenceExpression (null, "impl"), "Alloc"), new CodeExpression [] { new CodeThisReferenceExpression () })));
+		nativeCtor.Parameters.Add (new CodeParameterDeclarationExpression (new CodeTypeReference ("CppInstancePtr"), "native"));
+		nativeCtor.Statements.Add (new CodeAssignStatement (new CodeFieldReferenceExpression (null, "native_ptr"), new CodeArgumentReferenceExpression ("native")));
 		if (hasBase) {
 			var implTypeInfo = new CodeFieldReferenceExpression (new CodeFieldReferenceExpression { FieldName = "impl" }, "TypeInfo");
-			allocCtor.BaseConstructorArgs.Add (implTypeInfo);
+			nativeCtor.BaseConstructorArgs.Add (implTypeInfo);
 		}
-		decl.Members.Add (allocCtor);
+		decl.Members.Add (nativeCtor);
 
 		var subclassCtor = new CodeConstructor () {
-				Attributes = MemberAttributes.Family
+				Attributes = MemberAttributes.Public
 		};
 		subclassCtor.Parameters.Add (new CodeParameterDeclarationExpression (new CodeTypeReference ("CppTypeInfo"), "subClass"));
 		subclassCtor.Statements.Add (new CodeExpressionStatement (new CodeMethodInvokeExpression (new CodeMethodReferenceExpression (new CodeArgumentReferenceExpression ("subClass"), "AddBase"), new CodeExpression [] { new CodeFieldReferenceExpression (new CodeFieldReferenceExpression (null, "impl"), "TypeInfo") })));

src/generator/Generator.cs

@@ -25,6 +25,7 @@ public class Generator
 	string LibBaseName;
 	string InputFileName;
 	string FilterFile;
+	InlineMethods InlinePolicy;
 
 	CodeDomProvider Provider;
 	CodeGeneratorOptions CodeGenOptions;
@@ -43,10 +44,11 @@ public class Generator
 
 		var p = new OptionSet {
 				{ "h|?|help", "Show this help message", v => help = v != null },
-				{ "o=", "Set the output directory", v => OutputDir = v },
+				{ "o=|out=", "Set the output directory", v => OutputDir = v },
 				{ "ns=|namespace=", "Set the namespace of the generated code", v => Namespace = v },
 				{ "lib=", "The base name of the C++ library, i.e. 'qt' for libqt.so", v =>LibBaseName = v },
-				{ "filters=", "A file containing filter directives for filtering classes", v => FilterFile = v }
+				{ "filters=", "A file containing filter directives for filtering classes", v => FilterFile = v },
+				{ "inline=", "Inline methods in lib are: notpresent (default), present, surrogatelib (present in %lib%-inline)", v => InlinePolicy = (InlineMethods)Enum.Parse (typeof (InlineMethods), v, true) }
 			};
 
 		try {
@@ -241,6 +243,9 @@ public class Generator
 						IsDestructor = dtor
 				};
 
+				if (dtor)
+					method.GenWrapperMethod = false;
+
 				bool skip = false;
 
 				CppType retType;
@@ -395,7 +400,7 @@ public class Generator
 				else
 					return CppTypes.Unknown;
 			}
-			return modifiers.CopyTypeFrom (new CppType (CppTypes.Class, NodeToClass [n].Name));
+			return modifiers.CopyTypeFrom (new CppType (n.Type == "Class"? CppTypes.Class : CppTypes.Struct, NodeToClass [n].Name));
 		default:
 			return CppTypes.Unknown;
 		}
@@ -411,7 +416,7 @@ public class Generator
 
 		byref = false;
 		Type mtype = t.ToManagedType ();
-		if (mtype != null) {
+		if (mtype != null && mtype != typeof (ICppObject)) {
 			if (mtype.IsByRef) {
 				byref = true;
 				mtype = mtype.GetElementType ();
@@ -419,9 +424,12 @@ public class Generator
 			return new CodeTypeReference (mtype);
 		}
 
-		if (t.Modifiers.Count > 0 && t.ElementType != CppTypes.Void && t.ElementType != CppTypes.Class)
-			return null;
+		// Why is this here?
+		//if (t.Modifiers.Count > 0 && t.ElementType != CppTypes.Void && t.ElementType != CppTypes.Class)
+		//	return null;
 		switch (t.ElementType) {
+		// These cases should all be handled by ToManagedType, no?
+		/*
 		case CppTypes.Void:
 			if (t.Modifiers.Count > 0) {
 				if (t.Modifiers.Count == 1 && t.Modifiers [0] == CppModifiers.Pointer)
@@ -447,7 +455,9 @@ public class Generator
 		case CppTypes.Char:
 			rtype = new CodeTypeReference (typeof (char));
 			break;
+		*/
 		case CppTypes.Class:
+		case CppTypes.Struct:
 			// FIXME: Full name
 			rtype = new CodeTypeReference (t.ElementTypeName);
 			break;
@@ -483,7 +493,7 @@ public class Generator
 
 			var field = new CodeMemberField (new CodeTypeReference ("CppLibrary"), LibBaseName);
 			field.Attributes = MemberAttributes.Public|MemberAttributes.Static;
-			field.InitExpression = new CodeObjectCreateExpression (new CodeTypeReference ("CppLibrary"), new CodeExpression [] { new CodePrimitiveExpression (LibBaseName) });
+			field.InitExpression = new CodeObjectCreateExpression (new CodeTypeReference ("CppLibrary"), new CodeExpression [] { new CodePrimitiveExpression (LibBaseName), new CodeFieldReferenceExpression (new CodeTypeReferenceExpression (typeof (InlineMethods).Name), InlinePolicy.ToString ()) });
 			decl.Members.Add (field);
 
 			ns.Types.Add (decl);
@@ -512,7 +522,7 @@ public class Generator
 			//Provider.GenerateCodeFromCompileUnit(cu, Console.Out, CodeGenOptions);
 			using (TextWriter w = File.CreateText (Path.Combine (OutputDir, klass.Name + ".cs"))) {
 				// These are reported for the fields of the native layout structures
-				Provider.GenerateCodeFromCompileUnit (new CodeSnippetCompileUnit("#pragma warning disable 0414, 0169"), w, CodeGenOptions);
+				//Provider.GenerateCodeFromCompileUnit (new CodeSnippetCompileUnit("#pragma warning disable 0414, 0169"), w, CodeGenOptions);
 				Provider.GenerateCodeFromCompileUnit(cu, w, CodeGenOptions);
 			}
 		}

src/generator/Method.cs

@@ -115,6 +115,13 @@ class Method
 
 		CodeTypeReference rtype = g.CppTypeToCodeDomType (ReturnType);
 		method.ReturnType = rtype;
+		if ((ReturnType.ElementType == CppTypes.Class || ReturnType.ElementType == CppTypes.Struct) &&
+			!ReturnType.Modifiers.Contains (CppModifiers.Pointer) &&
+			!ReturnType.Modifiers.Contains (CppModifiers.Reference) &&
+			!ReturnType.Modifiers.Contains (CppModifiers.Array))
+		{
+			method.ReturnTypeCustomAttributes.Add (new CodeAttributeDeclaration ("ByVal"));
+		}
 
 		foreach (var p in Parameters) {
 			CppType ptype = p.Type;
@@ -125,9 +132,13 @@ class Method
 				param.Direction = FieldDirection.Ref;
 			if (!IsVirtual && !ptype.ToString ().Equals (string.Empty))
 				param.CustomAttributes.Add (new CodeAttributeDeclaration ("MangleAsAttribute", new CodeAttributeArgument (new CodePrimitiveExpression (ptype.ToString ()))));
-			// FIXME: Structs too
-			if (ptype.ElementType == CppTypes.Class && !ptype.Modifiers.Contains (CppModifiers.Reference) && !ptype.Modifiers.Contains (CppModifiers.Pointer))
+			if ((ptype.ElementType == CppTypes.Class || ptype.ElementType == CppTypes.Struct) &&
+				!ptype.Modifiers.Contains (CppModifiers.Pointer) &&
+				!ptype.Modifiers.Contains (CppModifiers.Reference) &&
+				!ptype.Modifiers.Contains (CppModifiers.Array))
+			{
 				param.CustomAttributes.Add (new CodeAttributeDeclaration ("ByVal"));
+			}
 			method.Parameters.Add (param);
 		}
 

tests/Makefile.am

@@ -28,17 +28,17 @@ test.xml: $(HDR)
 	gccxml -fxml=$@ --gccxml-cxxflags -c $(HDR)
 
 $(BUILD_DIR)/libTest.so: $(HEADERS) $(NATIVE)
-	g++ -fPIC --shared -o $@ $(NATIVE)
+	g++ -fPIC --shared -m32 -o $@ $(NATIVE)
 
 $(BUILD_DIR)/libTest-inline.so: $(HEADERS) $(NATIVE)
-	g++ -fPIC --shared -fkeep-inline-functions -o $@ $(NATIVE)
+	g++ -fPIC --shared -m32 -fkeep-inline-functions -o $@ $(NATIVE)
 
 generated: test.xml
 	$(RM) -r generated
-	mono --debug $(BUILD_DIR)/generator.exe -o=$@ -ns=Tests -lib=Test test.xml
+	mono --debug $(BUILD_DIR)/generator.exe -o=$@ -ns=Tests -lib=Test -inline=surrogatelib test.xml
 
 $(TEST_DLL): generated $(MANAGED) $(BUILD_DIR)/libTest.so $(BUILD_DIR)/libTest-inline.so
-	mcs -out:$@ -target:library -unsafe $(REFERENCES) -r:$(INTEROP_DLL) generated/*.cs $(MANAGED)
+	mcs -debug -out:$@ -target:library -unsafe $(REFERENCES) -r:$(INTEROP_DLL) generated/*.cs $(MANAGED)
 
 clean:
 	$(RM) -rf $(TEST_DLL) generated $(BUILD_DIR)/libTest.so $(BUILD_DIR)/libTest-inline.so test.xml