protected override MethodEmitter BuildProxiedMethodBody(MethodEmitter emitter, ClassEmitter @class, ProxyGenerationOptions options,INamingScope namingScope) { var invocationType = invocation; Trace.Assert(MethodToOverride.IsGenericMethod == invocationType.IsGenericTypeDefinition); Type[] genericMethodArgs = Type.EmptyTypes; ConstructorInfo constructor = invocation.GetConstructors()[0]; Expression proxiedMethodTokenExpression; if (MethodToOverride.IsGenericMethod) { // bind generic method arguments to invocation's type arguments genericMethodArgs = emitter.MethodBuilder.GetGenericArguments(); invocationType = invocationType.MakeGenericType(genericMethodArgs); constructor = TypeBuilder.GetConstructor(invocationType, constructor); // Not in the cache: generic method proxiedMethodTokenExpression = new MethodTokenExpression(MethodToOverride.MakeGenericMethod(genericMethodArgs)); } else { var proxiedMethodToken = @class.CreateStaticField(namingScope.GetUniqueName("token_" + MethodToOverride.Name), typeof(MethodInfo)); @class.ClassConstructor.CodeBuilder.AddStatement(new AssignStatement(proxiedMethodToken, new MethodTokenExpression(MethodToOverride))); proxiedMethodTokenExpression = proxiedMethodToken.ToExpression(); } var dereferencedArguments = IndirectReference.WrapIfByRef(emitter.Arguments); var ctorArguments = GetCtorArguments(@class, namingScope, proxiedMethodTokenExpression, dereferencedArguments); var invocationLocal = emitter.CodeBuilder.DeclareLocal(invocationType); emitter.CodeBuilder.AddStatement(new AssignStatement(invocationLocal, new NewInstanceExpression(constructor, ctorArguments))); if (MethodToOverride.ContainsGenericParameters) { EmitLoadGenricMethodArguments(emitter, MethodToOverride.MakeGenericMethod(genericMethodArgs), invocationLocal); } emitter.CodeBuilder.AddStatement( new ExpressionStatement(new MethodInvocationExpression(invocationLocal, InvocationMethods.Proceed))); GeneratorUtil.CopyOutAndRefParameters(dereferencedArguments, invocationLocal, MethodToOverride, emitter); if (MethodToOverride.ReturnType != typeof(void)) { // Emit code to return with cast from ReturnValue var getRetVal = new MethodInvocationExpression(invocationLocal, InvocationMethods.GetReturnValue); emitter.CodeBuilder.AddStatement(new ReturnStatement(new ConvertExpression(emitter.ReturnType, getRetVal))); } else { emitter.CodeBuilder.AddStatement(new ReturnStatement()); } return emitter; }
protected override MethodEmitter BuildProxiedMethodBody(MethodEmitter emitter, ClassEmitter @class, ProxyGenerationOptions options, INamingScope namingScope) { var invocationType = invocation; Trace.Assert(MethodToOverride.IsGenericMethod == invocationType.IsGenericTypeDefinition()); var genericArguments = TypeExtender.EmptyTypes; var constructor = invocation.GetConstructors()[0]; Expression proxiedMethodTokenExpression; if (MethodToOverride.IsGenericMethod) { // bind generic method arguments to invocation's type arguments genericArguments = emitter.MethodBuilder.GetGenericArguments(); invocationType = invocationType.MakeGenericType(genericArguments); constructor = TypeBuilder.GetConstructor(invocationType, constructor); // Not in the cache: generic method proxiedMethodTokenExpression = new MethodTokenExpression(MethodToOverride.MakeGenericMethod(genericArguments)); } else { var proxiedMethodToken = @class.CreateStaticField(namingScope.GetUniqueName("token_" + MethodToOverride.Name), typeof(MethodInfo)); @class.ClassConstructor.CodeBuilder.AddStatement(new AssignStatement(proxiedMethodToken, new MethodTokenExpression(MethodToOverride))); proxiedMethodTokenExpression = proxiedMethodToken.ToExpression(); } var dereferencedArguments = IndirectReference.WrapIfByRef(emitter.Arguments); var hasByRefArguments = HasByRefArguments(emitter.Arguments); var arguments = GetCtorArguments(@class, namingScope, proxiedMethodTokenExpression, dereferencedArguments); var ctorArguments = ModifyArguments(@class, arguments); var invocationLocal = emitter.CodeBuilder.DeclareLocal(invocationType); emitter.CodeBuilder.AddStatement(new AssignStatement(invocationLocal, new NewInstanceExpression(constructor, ctorArguments))); if (MethodToOverride.ContainsGenericParameters) { EmitLoadGenricMethodArguments(emitter, MethodToOverride.MakeGenericMethod(genericArguments), invocationLocal); } if (hasByRefArguments) { emitter.CodeBuilder.AddStatement(new TryStatement()); } var proceed = new ExpressionStatement(new MethodInvocationExpression(invocationLocal, InvocationMethods.Proceed)); emitter.CodeBuilder.AddStatement(proceed); if (hasByRefArguments) { emitter.CodeBuilder.AddStatement(new FinallyStatement()); } GeneratorUtil.CopyOutAndRefParameters(dereferencedArguments, invocationLocal, MethodToOverride, emitter); if (hasByRefArguments) { emitter.CodeBuilder.AddStatement(new EndExceptionBlockStatement()); } if (MethodToOverride.ReturnType != typeof(void)) { // Emit code to return with cast from ReturnValue // @mbrit - 2012-05-31 - see the note associated with the GetReturnValueForWinRt declaration // for more information on this... var useWinRtGenericHandler = false; #if NETFX_CORE if (emitter.ReturnType == typeof(int) || emitter.ReturnType == typeof(bool)) useWinRtGenericHandler = true; #endif if(!(useWinRtGenericHandler)) { var getRetVal = new MethodInvocationExpression(invocationLocal, InvocationMethods.GetReturnValue); emitter.CodeBuilder.AddStatement(new ReturnStatement(new ConvertExpression(emitter.ReturnType, getRetVal))); } else { #if NETFX_CORE var grvArgs = new Type[] { emitter.ReturnType }; var grvCall = InvocationMethods.GetReturnValueForWinRt.MakeGenericMethod(grvArgs); var getRetVal = new MethodInvocationExpression(invocationLocal, grvCall); emitter.CodeBuilder.AddStatement(new ReturnStatement(getRetVal)); #endif } } else { emitter.CodeBuilder.AddStatement(new ReturnStatement()); } return emitter; }
protected MethodEmitter ImplementProxiedMethod( Type targetType, MethodEmitter methodEmitter, MethodInfo method, ClassEmitter emitter, NestedClassEmitter invocationImpl, FieldReference interceptorsField, Reference targetRef, ConstructorVersion version, MethodInfo methodOnTarget) { CheckNotGenericTypeDefinition(targetType, "targetType"); methodEmitter.CopyParametersAndReturnTypeFrom(method, emitter); TypeReference[] dereferencedArguments = IndirectReference.WrapIfByRef(methodEmitter.Arguments); Type iinvocation = invocationImpl.TypeBuilder; Trace.Assert(method.IsGenericMethod == iinvocation.IsGenericTypeDefinition); bool isGenericInvocationClass = false; Type[] genericMethodArgs = new Type[0]; if (method.IsGenericMethod) { // bind generic method arguments to invocation's type arguments genericMethodArgs = methodEmitter.MethodBuilder.GetGenericArguments(); iinvocation = iinvocation.MakeGenericType(genericMethodArgs); isGenericInvocationClass = true; } LocalReference invocationImplLocal = methodEmitter.CodeBuilder.DeclareLocal(iinvocation); // TODO: Initialize iinvocation instance // with ordinary arguments and in and out arguments Expression interceptors; // if (useSelector) { // TODO: Generate code that checks the return of selector // if no interceptors is returned, should we invoke the base.Method directly? } // else { interceptors = interceptorsField.ToExpression(); } Expression typeTokenFieldExp = typeTokenField.ToExpression(); Expression methodInfoTokenExp; if (method2TokenField.ContainsKey(method)) // Token is in the cache { methodInfoTokenExp = ((FieldReference) method2TokenField[method]).ToExpression(); } else { // Not in the cache: generic method methodInfoTokenExp = new MethodTokenExpression(method.MakeGenericMethod(genericMethodArgs)); } ConstructorInfo constructor = invocationImpl.Constructors[0].ConstructorBuilder; if (isGenericInvocationClass) { constructor = TypeBuilder.GetConstructor(iinvocation, invocationImpl.Constructors[0].ConstructorBuilder); } NewInstanceExpression newInvocImpl; if (version == ConstructorVersion.WithTargetMethod) { Expression methodOnTargetTokenExp; if (method2TokenField.ContainsKey(methodOnTarget)) // Token is in the cache { methodOnTargetTokenExp = ((FieldReference) method2TokenField[methodOnTarget]).ToExpression(); } else { // Not in the cache: generic method methodOnTargetTokenExp = new MethodTokenExpression(methodOnTarget.MakeGenericMethod(genericMethodArgs)); } newInvocImpl = new NewInstanceExpression(constructor, targetRef.ToExpression(), interceptors, typeTokenFieldExp, methodOnTargetTokenExp, methodInfoTokenExp, new ReferencesToObjectArrayExpression(dereferencedArguments), SelfReference.Self.ToExpression()); } else { newInvocImpl = new NewInstanceExpression(constructor, targetRef.ToExpression(), interceptors, typeTokenFieldExp, methodInfoTokenExp, new ReferencesToObjectArrayExpression(dereferencedArguments), SelfReference.Self.ToExpression()); } methodEmitter.CodeBuilder.AddStatement(new AssignStatement(invocationImplLocal, newInvocImpl)); if (method.ContainsGenericParameters) { EmitLoadGenricMethodArguments(methodEmitter, method.MakeGenericMethod(genericMethodArgs), invocationImplLocal); } methodEmitter.CodeBuilder.AddStatement( new ExpressionStatement(new MethodInvocationExpression(invocationImplLocal, Constants.AbstractInvocationProceed))); CopyOutAndRefParameters(dereferencedArguments, invocationImplLocal, method, methodEmitter); if (method.ReturnType != typeof(void)) { // Emit code to return with cast from ReturnValue MethodInvocationExpression getRetVal = new MethodInvocationExpression(invocationImplLocal, typeof(AbstractInvocation).GetMethod("get_ReturnValue")); methodEmitter.CodeBuilder.AddStatement( new ReturnStatement(new ConvertExpression(methodEmitter.ReturnType, getRetVal))); } else { methodEmitter.CodeBuilder.AddStatement(new ReturnStatement()); } return methodEmitter; }
protected MethodEmitter ImplementProxiedMethod( Type targetType, MethodEmitter methodEmitter, MethodInfo method, ClassEmitter emitter, NestedClassEmitter invocationImpl, FieldReference interceptorsField, Reference targetRef, ConstructorVersion version, MethodInfo methodOnTarget) { CheckNotGenericTypeDefinition(targetType, "targetType"); methodEmitter.CopyParametersAndReturnTypeFrom(method, emitter); TypeReference[] dereferencedArguments = IndirectReference.WrapIfByRef(methodEmitter.Arguments); Type iinvocation = invocationImpl.TypeBuilder; Trace.Assert(method.IsGenericMethod == iinvocation.IsGenericTypeDefinition); bool isGenericInvocationClass = false; Type[] genericMethodArgs = new Type[0]; if (method.IsGenericMethod) { // bind generic method arguments to invocation's type arguments genericMethodArgs = methodEmitter.MethodBuilder.GetGenericArguments(); iinvocation = iinvocation.MakeGenericType(genericMethodArgs); isGenericInvocationClass = true; } Expression typeTokenFieldExp = typeTokenField.ToExpression(); Expression methodInfoTokenExp; string tokenFieldName; if (method2TokenField.ContainsKey(method)) // Token is in the cache { FieldReference methodTokenField = method2TokenField[method]; tokenFieldName = methodTokenField.Reference.Name; methodInfoTokenExp = methodTokenField.ToExpression(); } else { // Not in the cache: generic method MethodInfo genericMethod = method.MakeGenericMethod(genericMethodArgs); // Need random suffix added to the name, so that we don't end up with duplicate field names for // methods with the same name, but different generic parameters tokenFieldName = string.Format("{0}_{1}_{2}", genericMethod.Name, genericMethodArgs.Length, Guid.NewGuid().ToString("N")); methodInfoTokenExp = new MethodTokenExpression(genericMethod); } LocalReference invocationImplLocal = methodEmitter.CodeBuilder.DeclareLocal(iinvocation); // TODO: Initialize iinvocation instance with ordinary arguments and in and out arguments Expression interceptors = interceptorsField.ToExpression(); // Create the field to store the selected interceptors for this method if an InterceptorSelector is specified FieldReference methodInterceptors = null; if (proxyGenerationOptions.Selector != null) { // If no interceptors are returned, should we invoke the base.Method directly? Looks like we should not. methodInterceptors = emitter.CreateField(string.Format("{0}_interceptors", tokenFieldName), typeof(IInterceptor[])); } ConstructorInfo constructor = invocationImpl.Constructors[0].ConstructorBuilder; if (isGenericInvocationClass) { constructor = TypeBuilder.GetConstructor(iinvocation, constructor); } NewInstanceExpression newInvocImpl; if (version == ConstructorVersion.WithTargetMethod) { Expression methodOnTargetTokenExp; if (method2TokenField.ContainsKey(methodOnTarget)) // Token is in the cache { methodOnTargetTokenExp = method2TokenField[methodOnTarget].ToExpression(); } else { // Not in the cache: generic method methodOnTargetTokenExp = new MethodTokenExpression(methodOnTarget.MakeGenericMethod(genericMethodArgs)); } if (methodInterceptors == null) { newInvocImpl = //actual contructor call new NewInstanceExpression(constructor, targetRef.ToExpression(), interceptors, typeTokenFieldExp, methodOnTargetTokenExp, methodInfoTokenExp, new ReferencesToObjectArrayExpression(dereferencedArguments), SelfReference.Self.ToExpression()); } else { MethodInvocationExpression methodInvocationExpression = new MethodInvocationExpression(proxyGenerationOptionsField, proxyGenerationOptions_Selector); methodInvocationExpression.VirtualCall = true; newInvocImpl = //actual contructor call new NewInstanceExpression(constructor, targetRef.ToExpression(), interceptors, typeTokenFieldExp, methodOnTargetTokenExp, methodInfoTokenExp, new ReferencesToObjectArrayExpression(dereferencedArguments), SelfReference.Self.ToExpression(), methodInvocationExpression, new AddressOfReferenceExpression(methodInterceptors)); } } else { if (methodInterceptors == null) { newInvocImpl = new NewInstanceExpression(constructor, targetRef.ToExpression(), interceptors, typeTokenFieldExp, methodInfoTokenExp, new ReferencesToObjectArrayExpression(dereferencedArguments), SelfReference.Self.ToExpression()); } else { MethodInvocationExpression methodInvocationExpression = new MethodInvocationExpression(proxyGenerationOptionsField, proxyGenerationOptions_Selector); methodInvocationExpression.VirtualCall = true; newInvocImpl = new NewInstanceExpression(constructor, targetRef.ToExpression(), interceptors, typeTokenFieldExp, methodInfoTokenExp, new ReferencesToObjectArrayExpression(dereferencedArguments), SelfReference.Self.ToExpression(), methodInvocationExpression, new AddressOfReferenceExpression(methodInterceptors)); } } methodEmitter.CodeBuilder.AddStatement(new AssignStatement(invocationImplLocal, newInvocImpl)); if (method.ContainsGenericParameters) { EmitLoadGenricMethodArguments(methodEmitter, method.MakeGenericMethod(genericMethodArgs), invocationImplLocal); } methodEmitter.CodeBuilder.AddStatement( new ExpressionStatement(new MethodInvocationExpression(invocationImplLocal, Constants.AbstractInvocationProceed))); CopyOutAndRefParameters(dereferencedArguments, invocationImplLocal, method, methodEmitter); if (method.ReturnType != typeof(void)) { // Emit code to return with cast from ReturnValue MethodInvocationExpression getRetVal = new MethodInvocationExpression(invocationImplLocal, typeof(AbstractInvocation).GetMethod("get_ReturnValue")); methodEmitter.CodeBuilder.AddStatement( new ReturnStatement(new ConvertExpression(methodEmitter.ReturnType, getRetVal))); } else { methodEmitter.CodeBuilder.AddStatement(new ReturnStatement()); } return methodEmitter; }