protected FieldReference BuildMethodInterceptorsField(ClassEmitter @class, MethodInfo method, INamingScope namingScope) { var methodInterceptors = @class.CreateField( namingScope.GetUniqueName(string.Format("interceptors_{0}", method.Name)), typeof(IInterceptor[]), false); @class.DefineCustomAttributeFor <XmlIgnoreAttribute>(methodInterceptors); return(methodInterceptors); }
protected FieldReference BuildMethodInterceptorsField(ClassEmitter @class, MethodInfo method, INamingScope namingScope) { var methodInterceptors = @class.CreateField( namingScope.GetUniqueName(string.Format("interceptors_{0}", method.Name)), typeof(IInterceptor[]), false); #if !SILVERLIGHT @class.DefineCustomAttributeFor<XmlIgnoreAttribute>(methodInterceptors); #endif return methodInterceptors; }
private FieldReference BuildDelegateToken(ClassEmitter proxy) { var callback = proxy.CreateStaticField(namingScope.GetUniqueName("callback_" + method.Method.Name), delegateType); var createDelegate = new MethodInvocationExpression( null, DelegateMethods.CreateDelegate, new TypeTokenExpression(delegateType), NullExpression.Instance, new MethodTokenExpression(method.MethodOnTarget)); var bindDelegate = new AssignStatement(callback, new ConvertExpression(delegateType, createDelegate)); proxy.ClassConstructor.CodeBuilder.AddStatement(bindDelegate); return(callback); }
public ClassEmitter DefineType(string name, TypeAttributes attr, Type parent, Type[] interfaces) { if (name is null) { throw new ArgumentNullException(nameof(name)); } if (moduleBuilder is null) { lock (moduleLocker) { if (moduleBuilder is null) { moduleBuilder = CreateModule(); } } } return(new ClassEmitter(DefineTypeBuilder(moduleBuilder, namingScope.GetUniqueName(name), attr, parent, interfaces), namingScope)); }
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(IMethodInfo)); @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)) { 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); 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, INamingScope namingScope) { var invocationType = invocation; Trace.Assert(MethodToOverride.IsGenericMethod == invocationType.IsGenericTypeDefinition); var genericArguments = Type.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 methodInterceptors = SetMethodInterceptors(@class, namingScope, emitter, proxiedMethodTokenExpression); var dereferencedArguments = IndirectReference.WrapIfByRef(emitter.Arguments); var hasByRefArguments = HasByRefArguments(emitter.Arguments); var arguments = GetCtorArguments(@class, proxiedMethodTokenExpression, dereferencedArguments, methodInterceptors); 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)) { var getRetVal = new MethodInvocationExpression(invocationLocal, InvocationMethods.GetReturnValue); // Emit code to ensure a value type return type is not null, otherwise the cast will cause a null-deref if (emitter.ReturnType.IsValueType && !emitter.ReturnType.IsNullableType()) { LocalReference returnValue = emitter.CodeBuilder.DeclareLocal(typeof(object)); emitter.CodeBuilder.AddStatement(new AssignStatement(returnValue, getRetVal)); emitter.CodeBuilder.AddExpression(new IfNullExpression(returnValue, new ThrowStatement(typeof(InvalidOperationException), "Interceptors failed to set a return value, or swallowed the exception thrown by the target"))); } // Emit code to return with cast from ReturnValue emitter.CodeBuilder.AddStatement(new ReturnStatement(new ConvertExpression(emitter.ReturnType, getRetVal))); } else { emitter.CodeBuilder.AddStatement(new ReturnStatement()); } return(emitter); }
public string GetUniqueName(string suggestedName) { var name = _delegate.GetUniqueName(suggestedName); return(name.Replace("Castle.Proxies", PROXY_PREFIX)); }
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 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); }