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

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

MethodWithInvocationGenerator.cs

Source:MethodWithInvocationGenerator.cs Github

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...15{16 using System;17 using System.Diagnostics;18 using System.Reflection;19 using System.Reflection.Emit;20#if FEATURE_SERIALIZATION21 using System.Xml.Serialization;22#endif23 using Telerik.JustMock.Core.Castle.Core.Internal;24 using Telerik.JustMock.Core.Castle.DynamicProxy.Contributors;25 using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters;26 using Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST;27 using Telerik.JustMock.Core.Castle.DynamicProxy.Internal;28 using Telerik.JustMock.Core.Castle.DynamicProxy.Tokens;29 internal class MethodWithInvocationGenerator : MethodGenerator30 {31 private readonly IInvocationCreationContributor contributor;32 private readonly GetTargetExpressionDelegate getTargetExpression;33 private readonly GetTargetExpressionDelegate getTargetTypeExpression;34 private readonly Reference interceptors;35 private readonly Type invocation;36 public MethodWithInvocationGenerator(MetaMethod method, Reference interceptors, Type invocation,37 GetTargetExpressionDelegate getTargetExpression,38 OverrideMethodDelegate createMethod, IInvocationCreationContributor contributor)39 : this(method, interceptors, invocation, getTargetExpression, null, createMethod, contributor)40 {41 }42 public MethodWithInvocationGenerator(MetaMethod method, Reference interceptors, Type invocation,43 GetTargetExpressionDelegate getTargetExpression,44 GetTargetExpressionDelegate getTargetTypeExpression,45 OverrideMethodDelegate createMethod, IInvocationCreationContributor contributor)46 : base(method, createMethod)47 {48 this.invocation = invocation;49 this.getTargetExpression = getTargetExpression;50 this.getTargetTypeExpression = getTargetTypeExpression;51 this.interceptors = interceptors;52 this.contributor = contributor;53 }54 protected FieldReference BuildMethodInterceptorsField(ClassEmitter @class, MethodInfo method, INamingScope namingScope)55 {56 var methodInterceptors = @class.CreateField(57 namingScope.GetUniqueName(string.Format("interceptors_{0}", method.Name)),58 typeof(IInterceptor[]),59 false);60#if FEATURE_SERIALIZATION61 @class.DefineCustomAttributeFor<XmlIgnoreAttribute>(methodInterceptors);62#endif63 return methodInterceptors;64 }65 protected override MethodEmitter BuildProxiedMethodBody(MethodEmitter emitter, ClassEmitter @class, ProxyGenerationOptions options, INamingScope namingScope)66 {67 var invocationType = invocation;68 Trace.Assert(MethodToOverride.IsGenericMethod == invocationType.GetTypeInfo().IsGenericTypeDefinition);69 var genericArguments = Type.EmptyTypes;70 var constructor = invocation.GetConstructors()[0];71 Expression proxiedMethodTokenExpression;72 if (MethodToOverride.IsGenericMethod)73 {74 // bind generic method arguments to invocation's type arguments75 genericArguments = emitter.MethodBuilder.GetGenericArguments();76 invocationType = invocationType.MakeGenericType(genericArguments);77 constructor = TypeBuilder.GetConstructor(invocationType, constructor);78 // Not in the cache: generic method79 proxiedMethodTokenExpression = new MethodTokenExpression(MethodToOverride.MakeGenericMethod(genericArguments));80 }81 else82 {83 var proxiedMethodToken = @class.CreateStaticField(namingScope.GetUniqueName("token_" + MethodToOverride.Name), typeof(MethodInfo));84 @class.ClassConstructor.CodeBuilder.AddStatement(new AssignStatement(proxiedMethodToken, new MethodTokenExpression(MethodToOverride)));85 proxiedMethodTokenExpression = proxiedMethodToken.ToExpression();86 }87 var methodInterceptors = SetMethodInterceptors(@class, namingScope, emitter, proxiedMethodTokenExpression);88 var dereferencedArguments = IndirectReference.WrapIfByRef(emitter.Arguments);89 var hasByRefArguments = HasByRefArguments(emitter.Arguments);90 var arguments = GetCtorArguments(@class, proxiedMethodTokenExpression, dereferencedArguments, methodInterceptors);91 var ctorArguments = ModifyArguments(@class, arguments);92 var invocationLocal = emitter.CodeBuilder.DeclareLocal(invocationType);93 emitter.CodeBuilder.AddStatement(new AssignStatement(invocationLocal,94 new NewInstanceExpression(constructor, ctorArguments)));95 if (MethodToOverride.ContainsGenericParameters)96 {97 EmitLoadGenricMethodArguments(emitter, MethodToOverride.MakeGenericMethod(genericArguments), invocationLocal);98 }99 if (hasByRefArguments)100 {101 emitter.CodeBuilder.AddStatement(new TryStatement());102 }103 var proceed = new ExpressionStatement(new MethodInvocationExpression(invocationLocal, InvocationMethods.Proceed));104 emitter.CodeBuilder.AddStatement(proceed);105 if (hasByRefArguments)106 {107 emitter.CodeBuilder.AddStatement(new FinallyStatement());108 }109 GeneratorUtil.CopyOutAndRefParameters(dereferencedArguments, invocationLocal, MethodToOverride, emitter);110 if (hasByRefArguments)111 {112 emitter.CodeBuilder.AddStatement(new EndExceptionBlockStatement());113 }114 if (MethodToOverride.ReturnType != typeof(void))115 {116 var getRetVal = new MethodInvocationExpression(invocationLocal, InvocationMethods.GetReturnValue);117 // Emit code to ensure a value type return type is not null, otherwise the cast will cause a null-deref118 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])));172 }173 methodEmitter.CodeBuilder.AddExpression(174 new MethodInvocationExpression(invocationLocal,175 InvocationMethods.SetGenericMethodArguments,176 new ReferenceExpression(177 genericParamsArrayLocal)));178 }179 private Expression[] GetCtorArguments(ClassEmitter @class, Expression proxiedMethodTokenExpression, TypeReference[] dereferencedArguments, Expression methodInterceptors)180 {181 return new[]182 {183 getTargetExpression(@class, MethodToOverride),184 SelfReference.Self.ToExpression(),185 methodInterceptors ?? interceptors.ToExpression(),186 proxiedMethodTokenExpression,187 new ReferencesToObjectArrayExpression(dereferencedArguments)188 };189 }190 private Expression[] ModifyArguments(ClassEmitter @class, Expression[] arguments)191 {192 if (contributor == null)193 {194 return arguments;195 }196 return contributor.GetConstructorInvocationArguments(arguments, @class);197 }198 private bool HasByRefArguments(ArgumentReference[] arguments)199 {200 for (int i = 0; i < arguments.Length; i++ )201 {202 if (arguments[i].Type.GetTypeInfo().IsByRef)203 {204 return true;...

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ThrowStatement.cs

Source:ThrowStatement.cs Github

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...10// distributed under the License is distributed on an "AS IS" BASIS,11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.12// See the License for the specific language governing permissions and13// limitations under the License.14namespace Telerik.JustMock.Core.Castle.DynamicProxy.Generators.Emitters.SimpleAST15{16 using System;17 using System.Reflection.Emit;18 internal class ThrowStatement : Statement19 {20 private readonly string errorMessage;21 private readonly Type exceptionType;22 public ThrowStatement(Type exceptionType, String errorMessage)23 {24 this.exceptionType = exceptionType;25 this.errorMessage = errorMessage;26 }27 public override void Emit(IMemberEmitter member, ILGenerator gen)28 {29 var ci = exceptionType.GetConstructor(new[] { typeof(String) });30 var constRef = new ConstReference(errorMessage);31 var creationStmt = new NewInstanceExpression(ci, constRef.ToExpression());32 creationStmt.Emit(member, gen);33 gen.Emit(OpCodes.Throw);34 }35 }36}...

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