Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use IfNullExpression method of Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST.IfNullExpression class

Best JustMockLite code snippet using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST.IfNullExpression.IfNullExpression

MethodWithInvocationGenerator.cs

Source:MethodWithInvocationGenerator.cs

...118				if (emitter.ReturnType.GetTypeInfo().IsValueType && !emitter.ReturnType.IsNullableType())119				{120					LocalReference returnValue = emitter.CodeBuilder.DeclareLocal(typeof(object));121					emitter.CodeBuilder.AddStatement(new AssignStatement(returnValue, getRetVal));122					emitter.CodeBuilder.AddExpression(new IfNullExpression(returnValue, new ThrowStatement(typeof(InvalidOperationException),123						"Interceptors failed to set a return value, or swallowed the exception thrown by the target")));124				}125				// Emit code to return with cast from ReturnValue126				emitter.CodeBuilder.AddStatement(new ReturnStatement(new ConvertExpression(emitter.ReturnType, getRetVal)));127			}128			else129			{130				emitter.CodeBuilder.AddStatement(new ReturnStatement());131			}132			return emitter;133		}134		private Expression SetMethodInterceptors(ClassEmitter @class, INamingScope namingScope, MethodEmitter emitter, Expression proxiedMethodTokenExpression)135		{136			var selector = @class.GetField("__selector");137			if(selector == null)138			{139				return null;140			}141			var methodInterceptorsField = BuildMethodInterceptorsField(@class, MethodToOverride, namingScope);142			Expression targetTypeExpression;143			if (getTargetTypeExpression != null)144			{145				targetTypeExpression = getTargetTypeExpression(@class, MethodToOverride);146			}147			else148			{149				targetTypeExpression = new MethodInvocationExpression(null, TypeUtilMethods.GetTypeOrNull, getTargetExpression(@class, MethodToOverride));150			}151			var emptyInterceptors = new NewArrayExpression(0, typeof(IInterceptor));152			var selectInterceptors = new MethodInvocationExpression(selector, InterceptorSelectorMethods.SelectInterceptors,153			                                                        targetTypeExpression,154			                                                        proxiedMethodTokenExpression, interceptors.ToExpression())155			{ VirtualCall = true };156			emitter.CodeBuilder.AddExpression(157				new IfNullExpression(methodInterceptorsField,158				                     new AssignStatement(methodInterceptorsField,159				                                         new NullCoalescingOperatorExpression(selectInterceptors, emptyInterceptors))));160			return methodInterceptorsField.ToExpression();161		}162		private void EmitLoadGenricMethodArguments(MethodEmitter methodEmitter, MethodInfo method, Reference invocationLocal)163		{164			var genericParameters = method.GetGenericArguments().FindAll(t => t.GetTypeInfo().IsGenericParameter);165			var genericParamsArrayLocal = methodEmitter.CodeBuilder.DeclareLocal(typeof(Type[]));166			methodEmitter.CodeBuilder.AddStatement(167				new AssignStatement(genericParamsArrayLocal, new NewArrayExpression(genericParameters.Length, typeof(Type))));168			for (var i = 0; i < genericParameters.Length; ++i)169			{170				methodEmitter.CodeBuilder.AddStatement(171					new AssignArrayStatement(genericParamsArrayLocal, i, new TypeTokenExpression(genericParameters[i])));...

OptionallyForwardingMethodGenerator.cs

Source:OptionallyForwardingMethodGenerator.cs

...33		{34			var targetReference = getTargetReference(@class, MethodToOverride);35			emitter.CodeBuilder.AddStatement(36				new ExpressionStatement(37					new IfNullExpression(targetReference, IfNull(emitter.ReturnType), IfNotNull(targetReference))));38			return emitter;39		}40		private Expression IfNotNull(Reference targetReference)41		{42			var expression = new MultiStatementExpression();43			var arguments = ArgumentsUtil.ConvertToArgumentReferenceExpression(MethodToOverride.GetParameters());44			expression.AddStatement(new ReturnStatement(45			                        	new MethodInvocationExpression(46			                        		targetReference,47			                        		MethodToOverride,48			                        		arguments) { VirtualCall = true }));49			return expression;50		}51		private Expression IfNull(Type returnType)...

IfNullExpression.cs

Source:IfNullExpression.cs

...14namespace Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST15{16	using System;17	using System.Reflection.Emit;18	internal class IfNullExpression : Expression19	{20		private readonly IILEmitter ifNotNull;21		private readonly IILEmitter ifNull;22		private readonly Reference reference;23		private readonly Expression expression;24		public IfNullExpression(Reference reference, IILEmitter ifNull, IILEmitter ifNotNull = null)25		{26			this.reference = reference ?? throw new ArgumentNullException(nameof(reference));27			this.ifNull = ifNull;28			this.ifNotNull = ifNotNull;29		}30		public IfNullExpression(Expression expression, IILEmitter ifNull, IILEmitter ifNotNull = null)31		{32			this.expression = expression ?? throw new ArgumentNullException(nameof(expression));33			this.ifNull = ifNull;34			this.ifNotNull = ifNotNull;35		}36		public override void Emit(IMemberEmitter member, ILGenerator gen)37		{38			if (reference != null)39			{40				ArgumentsUtil.EmitLoadOwnerAndReference(reference, gen);41			}42			else if (expression != null)43			{44				expression.Emit(member, gen);...

IfNullExpression

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;6{7    {8        static void Main(string[] args)9        {10            IfNullExpression ifNull = new IfNullExpression(new ReferenceExpression("obj"), new ReferenceExpression("obj1"));11        }12    }13}14using System;15using System.Collections.Generic;16using System.Linq;17using System.Text;18using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;19{20    {21        static void Main(string[] args)22        {23            IfNullExpression ifNull = new IfNullExpression(new ReferenceExpression("obj"), new ReferenceExpression("obj1"));24        }25    }26}27Error 1   The type or namespace name 'IfNullExpression' could not be found (are you missing a using directive or an assembly reference?)    C:\Users\Telerik\Desktop\IfNullExpressionTest\2.cs   9  28  2.cs

IfNullExpression

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;7{8    {9        static void Main(string[] args)10        {11            var ifNullExpression = new IfNullExpression(new LiteralExpression(1), new LiteralExpression(2));12            Console.WriteLine(ifNullExpression.ToString());13        }14    }15}16using System;17using System.Collections.Generic;18using System.Linq;19using System.Text;20using System.Threading.Tasks;21using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;22{23    {24        static void Main(string[] args)25        {26            var ifNullExpression = new IfNullExpression(new LiteralExpression(1), new LiteralExpression(2));27            Console.WriteLine(ifNullExpression.ToString());28        }29    }30}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.