/// <summary>
/// 构建构造函数【用于代理类】，因为IoC注入和Proxy使用的方式是不同的，Proxy可能直接用数组去构造，而IoC只能一个一个去注入
/// </summary>
/// <param name="typeBuilder">类型构造</param>
/// <param name="sourceTypeOrInterfaceType">代理（接口或类）类型</param>
/// <param name="interceptors">拦截器集合</param>
/// <param name="interceptorFieldBuilder">拦截器构建，被定义为List接口</param>
protected override void DefineConstructor(TypeBuilder typeBuilder, Type sourceTypeOrInterfaceType, Type[] interceptors, FieldBuilder interceptorFieldBuilder)
{
/*构造函数*/
var ctorParamters = new List <Type>(1)
{
typeof(IInterceptor[])
};
var ctorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, ctorParamters.ToArray());
/*fix argument length*/
ctorParamters.Insert(0, sourceTypeOrInterfaceType);
var ctorIL = new MockEmitBuilder(ctorBuilder.GetILGenerator(), ctorBuilder.CallingConvention, typeof(void), ctorParamters.ToArray());
ctorIL.LoadArgument(0);
ctorIL.LoadConstant(2);
ctorIL.NewObject(typeof(List <IInterceptor>).GetConstructor(new[] { typeof(int) }));
ctorIL.StoreField(interceptorFieldBuilder);
ctorIL.LoadArgument(0);
ctorIL.LoadField(interceptorFieldBuilder);
ctorIL.LoadArgument(1);
ctorIL.Call(typeof(List <IInterceptor>).GetMethod("AddRange", new[] { typeof(IInterceptor[]) }));
ctorIL.Return();
}
/// <summary>
/// 构建方法
/// </summary>
/// <param name="member"></param>
/// <param name="members"></param>
/// <param name="exists"></param>
/// <param name="typeBuilder">类型构建</param>
/// <param name="sourceTypeOrInterfaceType">假如是承继父类的，则callBase就能生效</param>
/// <param name="buildInterface">构建接口</param>
/// <param name="found"></param>
private void BuildMethod(MemberInfo member, MemberInfo[] members, List <MemberInfo> exists, TypeBuilder typeBuilder, Type sourceTypeOrInterfaceType, bool @buildInterface, MockSetup found)
{
var method = member as MethodInfo;
if (!@buildInterface && method.IsFinal)
{
return;
}
/*泛型方法和基本方法有什么不同*/
var parameters = method.GetParameters();
var parameterTypes = new List <Type>(parameters.Length);
var voidReturn = method.ReturnType == typeof(void);
foreach (var parameter in parameters)
{
parameterTypes.Add(parameter.ParameterType);
}
var attributes = MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.HideBySig | MethodAttributes.SpecialName;
if (!buildInterface)
{
attributes = MethodAttributes.Public | MethodAttributes.ReuseSlot | MethodAttributes.Virtual | MethodAttributes.HideBySig;
}
var methodBuilder = typeBuilder.DefineMethod(method.Name,
attributes,
method.CallingConvention,
method.ReturnType, parameterTypes.ToArray());
/*fix argument length*/
parameterTypes.Insert(0, sourceTypeOrInterfaceType);
var il = new MockEmitBuilder(methodBuilder.GetILGenerator(), method.CallingConvention, method.ReturnType, parameterTypes.ToArray());
if (found == null)
{
goto _notImpl;
}
goto _impl;
_notImpl:
{
if (voidReturn)
{
/*out 参数*/
for (var i = 0; i < parameters.Length; i++)
{
if (parameters[i].IsOut)
{
il.LoadArgument((ushort)(i + 1));
var ele = parameters[i].ParameterType.GetElementType();
if (ele.IsValueType)
{
if (this.IsEnumType(ele) || this.IsNullableEnumType(ele))
{
il.Call(typeof(MockSetupInfoStore).GetMethod("ReturnDefault").MakeGenericMethod(new[] { ele }));
il.StoreIndirect(Enum.GetUnderlyingType(ele));
}
else
{
il.Call(typeof(MockSetupInfoStore).GetMethod("ReturnDefault").MakeGenericMethod(new[] { ele }));
il.StoreIndirect(ele);
}
}
else
{
il.LoadNull();
il.StoreIndirect(parameters[i].ParameterType);
}
}
}
il.Return();
return;
}
il.NewObject(typeof(NotImplementedException), Type.EmptyTypes);
il.Throw();
il.Return();
return;
};
_impl:
{
/*void*/
if (voidReturn)
{
if (found.MethodToCallType == MockSetup.MethodToCall.Exception || found.MethodToCallType == MockSetup.MethodToCall.Void)
{
}
else
{
throw new ArgumentOutOfRangeException(method.Name, string.Format("the method {0}.{1} return type is void, but mock donot provide action callback;", this.TargetType.Name, method.Name));
}
}
else
{
/*返回结果类型不匹配*/
if (found.GetType() != typeof(MockSetup <,>).MakeGenericType(new[] { this.TargetType, method.ReturnType }))
{
goto _notImpl;
}
}
/*返回基类类型，如果当前是接口类型的，则抛出异常*/
if (found.MethodIndex == 0)
{
if (@buildInterface)
{
goto _notImpl;
}
//this
foreach (var m in this.GetMembers(sourceTypeOrInterfaceType))
{
if (m.MemberType == MemberTypes.Method)
{
var pm = m as MethodInfo;
var pp = pm.GetParameters();
if (pm.Name == found.Method.Name && pp.Length == found.Method.GetParameters().Length)
{
il.LoadArgument(0);
for (ushort i = 1; i < pp.Length + 1; i++)
{
il.LoadArgument(i);
}
il.Call(pm);
il.Return();
return;
}
}
}
throw new ArgumentOutOfRangeException(method.Name, string.Format("the method {0}.{1} cannot been found;", this.TargetType.Name, method.Name));
}
/*用该值定位到执行的是哪个方法，因重载的原因，有15个方法以上，具体要看MockSetup<,>*/
var idx = MockSetupInfoStore.Enqueue(found);
/*抛出异常*/
if (found.MethodIndex == -1)
{
il.LoadArgument(0);
il.LoadConstant(idx);
if (voidReturn)
{
il.Call(typeof(MockSetupInfoStore).GetMethod("Call_ExceptionWithNoResult").MakeGenericMethod(new[] { this.TargetType }));
}
else
{
il.Call(typeof(MockSetupInfoStore).GetMethod("Call_ExceptionWithResult").MakeGenericMethod(new[] { this.TargetType, method.ReturnType }));
}
il.Return();
return;
}
var callMethodName = typeof(MockSetupInfoStore).GetMethod(string.Concat("Call_", found.MethodIndex.ToString()));
var makeGenericMethodParameterTypes = new List <Type>(found.MethodIndex);
makeGenericMethodParameterTypes.Add(this.TargetType);
if (found.MethodIndex >= 10 && found.MethodIndex <= 25)
{
/*没有参数的方法*/
if (found.MethodIndex == 10)
{
/*out 参数*/
for (var i = 0; i < parameters.Length; i++)
{
if (parameters[i].IsOut)
{
il.LoadArgument((ushort)(i + 1));
var ele = parameters[i].ParameterType.GetElementType();
if (ele.IsValueType)
{
if (this.IsEnumType(ele) || this.IsNullableEnumType(ele))
{
il.Call(typeof(MockSetupInfoStore).GetMethod("ReturnDefault").MakeGenericMethod(new[] { ele }));
il.StoreIndirect(Enum.GetUnderlyingType(ele));
}
else
{
il.Call(typeof(MockSetupInfoStore).GetMethod("ReturnDefault").MakeGenericMethod(new[] { ele }));
il.StoreIndirect(ele);
}
}
else
{
il.LoadNull();
il.StoreIndirect(parameters[i].ParameterType);
}
}
}
makeGenericMethodParameterTypes.Add(method.ReturnType);
il.LoadArgument(0);
il.LoadConstant(idx);
il.Call(callMethodName.MakeGenericMethod(makeGenericMethodParameterTypes.ToArray()));
il.Return();
return;
}
if (found.CallbackMethodParameters == null || found.CallbackMethodParameters.Length == 0)
{
throw new ArgumentOutOfRangeException(method.Name, string.Format("{0}.{1} method need {2} parameters,but mock provider 0 parameters", this.TargetType.Name, method.Name, parameterTypes.Count));
}
if (parameterTypes.Count != found.CallbackMethodParameters.Length)
{
throw new ArgumentException(string.Format("{0}.{1} method need {2} parameters,but the mock provide {3} parameters", this.TargetType.Name, method.Name, parameters.Length.ToString(), found.CallbackMethodParameters.Length.ToString()), method.Name);
}
for (var i = 1; i < found.CallbackMethodParameters.Length; i++)
{
if (parameterTypes[i] != found.CallbackMethodParameters[i].ParameterType)
{
throw new ArgumentException(string.Format("{0}.{1} method the {2} parameter type is {3},but the mock provide {4} type", this.TargetType.Name, method.Name, i.ToString(), parameterTypes[i].Name, found.CallbackMethodParameters[i].ParameterType.Name), method.Name);
}
makeGenericMethodParameterTypes.Add(found.CallbackMethodParameters[i].ParameterType);
}
makeGenericMethodParameterTypes.Add(method.ReturnType);
/*out 参数*/
for (var i = 0; i < parameters.Length; i++)
{
if (parameters[i].IsOut)
{
il.LoadArgument((ushort)(i + 1));
var ele = parameters[i].ParameterType.GetElementType();
if (ele.IsValueType)
{
if (this.IsEnumType(ele) || this.IsNullableEnumType(ele))
{
il.Call(typeof(MockSetupInfoStore).GetMethod("ReturnDefault").MakeGenericMethod(new[] { ele }));
il.StoreIndirect(Enum.GetUnderlyingType(ele));
}
else
{
il.Call(typeof(MockSetupInfoStore).GetMethod("ReturnDefault").MakeGenericMethod(new[] { ele }));
il.StoreIndirect(ele);
}
}
else
{
il.LoadNull();
il.StoreIndirect(parameters[i].ParameterType);
}
}
}
il.LoadArgument(0);
il.LoadConstant(idx);
for (ushort i = 1; i < makeGenericMethodParameterTypes.Count - 1; i++)
{
il.LoadArgument(i);
}
il.Call(callMethodName.MakeGenericMethod(makeGenericMethodParameterTypes.ToArray()));
il.Return();
return;
}
if (found.MethodIndex >= 30 && found.MethodIndex <= 45)
{
/*没有参数的方法*/
if (found.MethodIndex == 30)
{
/*out 参数*/
for (var i = 0; i < parameters.Length; i++)
{
if (parameters[i].IsOut)
{
il.LoadArgument((ushort)(i + 1));
var ele = parameters[i].ParameterType.GetElementType();
if (ele.IsValueType)
{
if (this.IsEnumType(ele) || this.IsNullableEnumType(ele))
{
il.Call(typeof(MockSetupInfoStore).GetMethod("ReturnDefault").MakeGenericMethod(new[] { ele }));
il.StoreIndirect(Enum.GetUnderlyingType(ele));
}
else
{
il.Call(typeof(MockSetupInfoStore).GetMethod("ReturnDefault").MakeGenericMethod(new[] { ele }));
il.StoreIndirect(ele);
}
}
else
{
il.LoadNull();
il.StoreIndirect(parameters[i].ParameterType);
}
}
}
il.LoadArgument(0);
il.LoadConstant(idx);
il.Call(callMethodName.MakeGenericMethod(makeGenericMethodParameterTypes.ToArray()));
il.Return();
return;
}
if (parameterTypes.Count != found.CallbackMethodParameters.Length)
{
throw new ArgumentException(string.Format("{0}.{1} method need {2} parameters,but the mock provide {3} parameters", this.TargetType.Name, method.Name, parameters.Length.ToString(), found.CallbackMethodParameters.Length.ToString()), method.Name);
}
for (var i = 1; i < found.CallbackMethodParameters.Length; i++)
{
if (parameterTypes[i] != found.CallbackMethodParameters[i].ParameterType)
{
throw new ArgumentException(string.Format("{0}.{1} method the {2} parameter type is {3},but the mock provide {4} type", this.TargetType.Name, method.Name, i.ToString(), parameterTypes[i].Name, found.CallbackMethodParameters[i].ParameterType.Name), method.Name);
}
makeGenericMethodParameterTypes.Add(found.CallbackMethodParameters[i].ParameterType);
}
/*out 参数*/
for (var i = 0; i < parameters.Length; i++)
{
if (parameters[i].IsOut)
{
il.LoadArgument((ushort)(i + 1));
var ele = parameters[i].ParameterType.GetElementType();
if (ele.IsValueType)
{
if (this.IsEnumType(ele) || this.IsNullableEnumType(ele))
{
il.Call(typeof(MockSetupInfoStore).GetMethod("ReturnDefault").MakeGenericMethod(new[] { ele }));
il.StoreIndirect(Enum.GetUnderlyingType(ele));
}
else
{
il.Call(typeof(MockSetupInfoStore).GetMethod("ReturnDefault").MakeGenericMethod(new[] { ele }));
il.StoreIndirect(ele);
}
}
else
{
il.LoadNull();
il.StoreIndirect(parameters[i].ParameterType);
}
}
}
il.LoadArgument(0);
il.LoadConstant(idx);
for (ushort i = 1; i < makeGenericMethodParameterTypes.Count; i++)
{
il.LoadArgument(i);
}
il.Call(callMethodName.MakeGenericMethod(makeGenericMethodParameterTypes.ToArray()));
il.Return();
return;
}
};
}
/// <summary>
/// 构建事件
/// </summary>
/// <param name="member"></param>
/// <param name="members"></param>
/// <param name="exists"></param>
/// <param name="typeBuilder">类型构建</param>
/// <param name="sourceTypeOrInterfaceType">假如是承继父类的，则callBase就能生效</param>
/// <param name="buildInterface">构建接口</param>
protected virtual void BuildEvent(MemberInfo member, MemberInfo[] members, List <MemberInfo> exists, TypeBuilder typeBuilder, Type sourceTypeOrInterfaceType, bool @buildInterface)
{
var @event = member as EventInfo;
exists.Add(@event);
var addName = string.Concat("add_", @event.Name);
var removeName = string.Concat("remove_", @event.Name);
MethodInfo addMethod = null, removeMethod = null;
foreach (var m in members)
{
if (m.MemberType == MemberTypes.Method)
{
if (addName == m.Name)
{
addMethod = (MethodInfo)m;
exists.Add(m);
if (removeMethod != null)
{
break;
}
}
else if (removeName == m.Name)
{
removeMethod = (MethodInfo)m;
exists.Add(m);
if (addMethod != null)
{
break;
}
}
}
}
FieldBuilder fieldBuilder = null;
EventBuilder eventBuilder = null;
if (!@buildInterface && (addMethod == null || addMethod.IsFinal) && (removeMethod == null || removeMethod.IsFinal))
{
return;
}
eventBuilder = typeBuilder.DefineEvent(@event.Name, @event.Attributes, @event.EventHandlerType);
if (addMethod != null)
{
fieldBuilder = typeBuilder.DefineField(@event.Name, @event.EventHandlerType, FieldAttributes.Private);
/*泛型方法和基本方法有什么不同*/
var parameters = addMethod.GetParameters();
var parameterTypes = new List <Type>(parameters.Length);
var voidReturn = addMethod.ReturnType == typeof(void);
foreach (var parameter in parameters)
{
parameterTypes.Add(parameter.ParameterType);
}
var attributes = MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.HideBySig | MethodAttributes.SpecialName;
if (!buildInterface)
{
attributes = MethodAttributes.Public | MethodAttributes.ReuseSlot | MethodAttributes.Virtual | MethodAttributes.HideBySig;
}
var methodBuilder = typeBuilder.DefineMethod(addMethod.Name,
attributes,
addMethod.CallingConvention,
addMethod.ReturnType, parameterTypes.ToArray());
/*fix argument length*/
parameterTypes.Insert(0, sourceTypeOrInterfaceType);
var il = new MockEmitBuilder(methodBuilder.GetILGenerator(), addMethod.CallingConvention, addMethod.ReturnType, parameterTypes.ToArray());
var locals = new[]
{
il.DeclareLocal(@event.EventHandlerType),
il.DeclareLocal(@event.EventHandlerType),
il.DeclareLocal(@event.EventHandlerType),
};
var label = il.DefineLabel();
il.LoadArgument(0);
il.LoadField(fieldBuilder);
il.StoreLocal(locals[0]);
il.MarkLabel(label);
il.LoadLocal(locals[0]);
il.StoreLocal(locals[1]);
il.LoadLocal(locals[1]);
il.LoadArgument(1);
MethodInfo delegateMethod = null;
foreach (var method in typeof(System.Delegate).GetMethods(BindingFlags.Public | BindingFlags.Static))
{
if (method.Name == "Combine" && method.GetParameters().Length == 2)
{
delegateMethod = method;
break;
}
}
il.Call(delegateMethod);
il.CastClass(@event.EventHandlerType);
il.StoreLocal(locals[2]);
il.LoadArgument(0);
il.LoadFieldAddress(fieldBuilder);
il.LoadLocal(locals[2]);
il.LoadLocal(locals[1]);
foreach (var method in typeof(System.Threading.Interlocked).GetMethods(BindingFlags.Public | BindingFlags.Static))
{
if (method.Name == "CompareExchange" && method.IsGenericMethod && method.GetParameters().Length == 3)
{
delegateMethod = method;
break;
}
}
il.Call(delegateMethod.MakeGenericMethod(new[] { @event.EventHandlerType }));
il.StoreLocal(locals[0]);
il.LoadLocal(locals[0]);
il.LoadLocal(locals[1]);
il.UnsignedBranchIfNotEqual(label);
il.Return();
@eventBuilder.SetAddOnMethod(methodBuilder);
}
if (removeMethod != null)
{
if (fieldBuilder == null)
{
fieldBuilder = typeBuilder.DefineField(@event.Name, @event.EventHandlerType, FieldAttributes.Private);
}
/*泛型方法和基本方法有什么不同*/
var parameters = removeMethod.GetParameters();
var parameterTypes = new List <Type>(parameters.Length);
var voidReturn = removeMethod.ReturnType == typeof(void);
foreach (var parameter in parameters)
{
parameterTypes.Add(parameter.ParameterType);
}
var attributes = MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.HideBySig | MethodAttributes.SpecialName;
if (!buildInterface)
{
attributes = MethodAttributes.Public | MethodAttributes.ReuseSlot | MethodAttributes.Virtual | MethodAttributes.HideBySig;
}
var methodBuilder = typeBuilder.DefineMethod(removeMethod.Name,
attributes,
removeMethod.CallingConvention,
removeMethod.ReturnType, parameterTypes.ToArray());
/*fix argument length*/
parameterTypes.Insert(0, sourceTypeOrInterfaceType);
var il = new MockEmitBuilder(methodBuilder.GetILGenerator(), removeMethod.CallingConvention, removeMethod.ReturnType, parameterTypes.ToArray());
var locals = new[]
{
il.DeclareLocal(@event.EventHandlerType),
il.DeclareLocal(@event.EventHandlerType),
il.DeclareLocal(@event.EventHandlerType),
};
var label = il.DefineLabel();
il.LoadArgument(0);
il.LoadField(fieldBuilder);
il.StoreLocal(locals[0]);
il.MarkLabel(label);
il.LoadLocal(locals[0]);
il.StoreLocal(locals[1]);
il.LoadLocal(locals[1]);
il.LoadArgument(1);
MethodInfo delegateMethod = null;
foreach (var method in typeof(System.Delegate).GetMethods(BindingFlags.Public | BindingFlags.Static))
{
if (method.Name == "Remove" && method.GetParameters().Length == 2)
{
delegateMethod = method;
break;
}
}
il.Call(delegateMethod);
il.CastClass(@event.EventHandlerType);
il.StoreLocal(locals[2]);
il.LoadArgument(0);
il.LoadFieldAddress(fieldBuilder);
il.LoadLocal(locals[2]);
il.LoadLocal(locals[1]);
foreach (var method in typeof(System.Threading.Interlocked).GetMethods(BindingFlags.Public | BindingFlags.Static))
{
if (method.Name == "CompareExchange" && method.IsGenericMethod && method.GetParameters().Length == 3)
{
delegateMethod = method;
break;
}
}
il.Call(delegateMethod.MakeGenericMethod(new[] { @event.EventHandlerType }));
il.StoreLocal(locals[0]);
il.LoadLocal(locals[0]);
il.LoadLocal(locals[1]);
il.UnsignedBranchIfNotEqual(label);
il.Return();
@eventBuilder.SetRemoveOnMethod(methodBuilder);
}
}