private Type CreateAgentTypeByInterface(Type interfaceType, Type implementType)
{
string typeName = GetTypeName(implementType);
TypeAttributes attr = TypeAttributes.Class | TypeAttributes.Public;
TypeBuilder typeBuilder = m_ModuleBuilder.DefineType(typeName, attr, null, new Type[] { interfaceType });
//获取所有的父接口
IList <Type> interfaces = new List <Type>();
TypeHelper.GetAllFatherInterfaces(interfaceType, interfaces);
//获取所有属性
PropertyInfo[] pis = TypeHelper.GetAllPropeties(interfaces);
//生成代理+属性的私有成员
FieldBuilder agent = null;
FieldBuilder[] members = null;
Initialize.Members(typeBuilder, implementType, pis, ref agent, ref members);
//识别AOP标记
Type exType = null;
Type authType = null;
Type[] basicTypes = null;
//识别类上做的标记
var atts = implementType.GetCustomAttributes(true);
FilterAspect(atts, ref basicTypes, ref authType, ref exType);
//处理接口中的所有方法（对方法进行IL植入）
MethodInfo[] methods = TypeHelper.GetAllMethods(interfaces);
foreach (MethodInfo method in methods)
{
//忽略所有属性的get和set方法
if (method.IsSpecialName)
{
continue;
}
ImplementMethodByInterface(typeBuilder, agent, method, basicTypes, authType, exType);
}
//处理接口中的所有属性（自定义标签的植入）
for (int i = 0; i < pis.Length; i++)
{
ImplementProperty(typeBuilder, pis[i], agent, members[i]);
}
Type dynamicType = typeBuilder.CreateType();
//如果想看动态生成的实际类型，可放开此代码，就可在运行dll的目录找到
//m_AssemblyBuilder.Save("333.dll"); //保存到本地
return(dynamicType);
}
private Type CreateAgentTypeByClass(Type bindType)
{
string typeName = GetTypeName(bindType);
TypeAttributes attr = TypeAttributes.Class | TypeAttributes.Public;
TypeBuilder typeBuilder = m_ModuleBuilder.DefineType(typeName, attr, bindType, Type.EmptyTypes);
//获取所有的父接口
//IList<Type> interfaces = new List<Type>();
//GetAllFatherInterfaces(bindType, interfaces);
//获取所有属性
PropertyInfo[] pis = TypeHelper.GetAllPropeties(new Type[] { bindType });
//生成代理+属性的私有成员
FieldBuilder agent = null;
FieldBuilder[] members = null;
Initialize.Members(typeBuilder, bindType, pis, ref agent, ref members);
//识别AOP标记
Type exType = null;
Type authType = null;
Type[] basicTypes = null;
//识别类上做的标记
var atts = bindType.GetCustomAttributes(true);
FilterAspect(atts, ref basicTypes, ref authType, ref exType);
//处理接口中的所有方法（对方法进行IL植入）
MethodInfo[] methods = bindType.GetMethods(BindingFlags.Public | BindingFlags.Instance);
foreach (MethodInfo method in methods)
{
if (method.Name.StartsWith("get_") || method.Name.StartsWith("set_"))
{
continue;
}
ImplementMethodByClass(typeBuilder, agent, method, basicTypes, authType, exType);
}
//处理接口中的所有属性（自定义标签的植入）
//for (int i = 0; i < pis.Length; i++)
// ImplementProperty(typeBuilder, pis[i], agent, members[i]);
Type dynamicType = typeBuilder.CreateType();
//如果想看动态生成的实际类型，可放开此代码，就可在运行dll的目录找到
//m_AssemblyBuilder.Save(m_DllName); //保存到本地
return(dynamicType);
}
private void ImplementMethodByInterface(TypeBuilder typeBuilder, FieldBuilder agent, MethodInfo method, Type[] basicTypes, Type authType, Type exType)
{
var pis = method.GetParameters();
Type[] paramTypes = pis.Select(c => c.ParameterType).ToArray();
//识别方法上的标记（方法上的标记覆盖类上的标记）
var atts = agent.FieldType.GetMethod(method.Name, paramTypes).GetCustomAttributes(true);
//实现接口的方法标记
MethodAttributes attr = MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.NewSlot | MethodAttributes.Virtual | MethodAttributes.Final;
MethodBuilder methodBuilder = typeBuilder.DefineMethod(method.Name, attr, method.ReturnType, paramTypes);
//构建各个参数的描述
DefineParameters(methodBuilder, pis);
//开始植入方法体
ILGenerator il = methodBuilder.GetILGenerator();
//定义返回值并初始化（如果有）
bool is_void = false;
LocalBuilder result = InitializeResult(il, method.ReturnType, ref is_void);
FilterAspect(atts, ref basicTypes, ref authType, ref exType);
//初始化上下文对象
LocalBuilder context = null;
LocalBuilder obj_arr = null;
//如果存在AOP标记，则开始初始化上下文对象
if (basicTypes != null || authType != null || exType != null)
{
context = Initialize.Context(il, paramTypes, ref obj_arr, method, agent);
}
//开始植入基本（执行前）的AOP代码
var basics = Initialize.ExecutingBasics(il, basicTypes, context);
//开始植入认证的AOP代码
Label?lbl = null;
Initialize.Authentication(il, authType, context, ref lbl);
//开始植入异常(try)AOP代码
EmitHelper.ImplantBeginException(il, exType);
//利用成员代理和当前的调用参数，获取真正执行的函数结果
Initialize.CallResult(il, agent, method, pis, paramTypes, result, is_void);
//开始植入异常(catch)AOP代码
EmitHelper.ImplantCatchException(il, exType, context);
//如果有标签，则把标签定位到本位置（认证AOP使用）
if (lbl.HasValue)
{
il.MarkLabel(lbl.Value);
}
//对ref参数的值进行重新赋值
ReSetValue(il, paramTypes, obj_arr);
//将本次执行的结果附加到当前的上下文环境中
Initialize.AppendContextResult(il, context, result);
//开始植入基本（执行后）的AOP代码
Initialize.ImplantExecutedBasics(il, basics, basicTypes, context);
//如果有返回值，则结果压栈
if (!is_void)
{
il.Emit(OpCodes.Ldloc, result);
}
//返回结果
il.Emit(OpCodes.Ret);
}
