/// <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;
}
};
}