mirror of
https://gitee.com/langsisi_admin/serein-flow
synced 2026-03-03 00:00:49 +08:00
598 lines
27 KiB
C#
598 lines
27 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection.Emit;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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using System.ComponentModel;
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namespace Serein.Library.Utils
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{
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/// <summary>
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/// 通过字典构造动态对象
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/// </summary>
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public class DynamicObjectHelper
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{
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// 类型缓存，键为类型的唯一名称（可以根据实际需求调整生成方式）
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private static Dictionary<string, Type> typeCache = new Dictionary<string, Type>();
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private static readonly AssemblyBuilder AssemblyBuilder;
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private static readonly ModuleBuilder ModuleBuilder;
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static DynamicObjectHelper() // 静态构造函数
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{
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var assemblyName = new AssemblyName("DynamicAssembly");
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AssemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);
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ModuleBuilder = AssemblyBuilder.DefineDynamicModule("MainModule");
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}
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/// <summary>
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/// 获取运行时创建过的类型
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/// </summary>
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/// <param name="className"></param>
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/// <returns></returns>
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public static Type GetCacheType(string className)
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{
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if(typeCache.TryGetValue(className, out var type))
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{
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return type;
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}
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return null;
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}
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/// <summary>
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/// 解析字典属性并创建对象实例
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/// </summary>
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/// <param name="properties"></param>
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/// <param name="typeName"></param>
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/// <returns></returns>
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public static object Resolve(IDictionary<string, object> properties, string typeName)
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{
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var obj = CreateObjectWithProperties(properties, typeName);
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//SetPropertyValues(obj, properties);
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return obj;
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}
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/// <summary>
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/// 尝试解析字典属性并创建对象实例
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/// </summary>
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/// <param name="properties"></param>
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/// <param name="typeName"></param>
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/// <param name="result"></param>
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/// <returns></returns>
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public static bool TryResolve(IDictionary<string, object> properties, string typeName, out object result)
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{
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result = CreateObjectWithProperties(properties, typeName);
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bool success = SetPropertyValuesWithValidation(result, properties);
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return success;
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}
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/// <summary>
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/// 打印对象属性及类型
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/// </summary>
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/// <param name="obj"></param>
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/// <param name="indent"></param>
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public static void PrintObjectProperties(object obj, string indent = "")
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{
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var objType = obj.GetType();
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foreach (var prop in objType.GetProperties())
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{
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var value = prop.GetValue(obj);
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SereinEnv.WriteLine(InfoType.INFO, $"{indent}{prop.Name} (Type: {prop.PropertyType.Name}): {value}");
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if (value != null)
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{
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if (prop.PropertyType.IsArray) // 处理数组类型
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{
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var array = (Array)value;
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SereinEnv.WriteLine(InfoType.INFO, $"{indent}{prop.Name} is an array with {array.Length} elements:");
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for (int i = 0; i < array.Length; i++)
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{
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var element = array.GetValue(i);
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if (element != null && element.GetType().IsClass && !(element is string))
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{
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SereinEnv.WriteLine(InfoType.INFO, $"{indent}\tArray[{i}] (Type: {element.GetType().Name}) contains a nested object:");
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PrintObjectProperties(element, indent + "\t\t");
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}
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else
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{
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SereinEnv.WriteLine(InfoType.INFO, $"{indent}\tArray[{i}] (Type: {element?.GetType().Name}): {element}");
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}
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}
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}
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else if (value.GetType().IsClass && !(value is string)) // 处理嵌套对象
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{
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SereinEnv.WriteLine(InfoType.INFO, $"{indent}{prop.Name} contains a nested object:");
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PrintObjectProperties(value, indent + "\t");
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}
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}
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}
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}
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/// <summary>
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/// 创建具有属性的类型
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/// </summary>
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/// <param name="properties">成员属性名称及类型</param>
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/// <param name="typeName">类型名称</param>
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/// <param name="isOverlay">是否覆盖</param>
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/// <returns></returns>
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/// <exception cref="Exception"></exception>
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public static Type CreateTypeWithProperties(IDictionary<string, Type> properties, string typeName, bool isOverlay = false)
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{
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// 如果类型已经缓存，且没有显示指定需要覆盖，直接返回缓存的类型
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if (typeCache.ContainsKey(typeName) && !isOverlay)
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{
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return typeCache[typeName];
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}
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// 定义动态程序集和模块
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/*var assemblyName = new AssemblyName("DynamicAssembly");
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var assemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);
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var moduleBuilder = AssemblyBuilder.DefineDynamicModule("MainModule");
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*/
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// 定义动态类型
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var typeBuilder = ModuleBuilder.DefineType(typeName, TypeAttributes.Public);
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// 为每个属性名和值添加相应的属性到动态类型中
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foreach (var kvp in properties)
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{
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string propName = kvp.Key;
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object propValue = kvp.Value;
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Type propType;
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if (propValue is IList<Dictionary<string, Type>>) // 处理数组类型
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{
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var nestedPropValue = (propValue as IList<Dictionary<string, Type>>)[0];
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var nestedType = CreateTypeWithProperties(nestedPropValue, $"{propName}Element");
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propType = nestedType.GetType().MakeArrayType(); // 创建数组类型
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}
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else if (propValue is Dictionary<string, Type> nestedProperties)
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{
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// 如果值是嵌套的字典，递归创建嵌套类型
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propType = CreateTypeWithProperties(nestedProperties, $"{typeName}_{propName}").GetType();
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}
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else if (propValue is Type type)
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{
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// 如果是普通类型，使用值的类型
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propType = type ?? typeof(object);
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}
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else
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{
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throw new Exception($"无法解析的类型：{propValue}");
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}
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// 定义私有字段和公共属性
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var fieldBuilder = typeBuilder.DefineField("_" + propName, propType, FieldAttributes.Private);
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var propertyBuilder = typeBuilder.DefineProperty(propName, PropertyAttributes.HasDefault, propType, null);
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// 定义 getter 方法
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var getMethodBuilder = typeBuilder.DefineMethod(
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"get_" + propName,
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MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig,
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propType,
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Type.EmptyTypes);
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var getIL = getMethodBuilder.GetILGenerator();
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getIL.Emit(OpCodes.Ldarg_0);
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getIL.Emit(OpCodes.Ldfld, fieldBuilder);
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getIL.Emit(OpCodes.Ret);
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// 定义 setter 方法
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var setMethodBuilder = typeBuilder.DefineMethod(
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"set_" + propName,
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MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig,
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null,
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new Type[] { propType });
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var setIL = setMethodBuilder.GetILGenerator();
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setIL.Emit(OpCodes.Ldarg_0);
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setIL.Emit(OpCodes.Ldarg_1);
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setIL.Emit(OpCodes.Stfld, fieldBuilder);
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setIL.Emit(OpCodes.Ret);
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// 将 getter 和 setter 方法添加到属性
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propertyBuilder.SetGetMethod(getMethodBuilder);
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propertyBuilder.SetSetMethod(setMethodBuilder);
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}
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// 创建类型并缓存
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var dynamicType = typeBuilder.CreateType();
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typeCache[typeName] = dynamicType;
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// 创建对象实例
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return dynamicType;
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}
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/// <summary>
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/// 创建继承通知接口、具有属性的类型
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/// </summary>
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/// <param name="properties"></param>
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/// <param name="typeName"></param>
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/// <param name="isOverlay"></param>
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/// <returns></returns>
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/// <exception cref="Exception"></exception>
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public static Type CreateTypeWithINotifyPropertyChanged(IDictionary<string, Type> properties, string typeName, bool isOverlay = false)
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{
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if (typeCache.ContainsKey(typeName) && !isOverlay)
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return typeCache[typeName];
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var typeBuilder = ModuleBuilder.DefineType(typeName, TypeAttributes.Public | TypeAttributes.Class);
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typeBuilder.AddInterfaceImplementation(typeof(INotifyPropertyChanged));
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// 添加 PropertyChanged 字段
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var eventHandlerType = typeof(PropertyChangedEventHandler);
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var propertyChangedField = typeBuilder.DefineField("PropertyChanged", eventHandlerType, FieldAttributes.Private);
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// 添加 PropertyChanged 事件
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var eventBuilder = typeBuilder.DefineEvent("PropertyChanged", EventAttributes.None, eventHandlerType);
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// add_PropertyChanged
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var addMethod = typeBuilder.DefineMethod("add_PropertyChanged", MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.Virtual | MethodAttributes.HideBySig, null, new[] { eventHandlerType });
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{
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var il = addMethod.GetILGenerator();
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var combine = typeof(Delegate).GetMethod("Combine", new[] { typeof(Delegate), typeof(Delegate) });
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// this.PropertyChanged = (PropertyChangedEventHandler)Delegate.Combine(this.PropertyChanged, value);
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il.Emit(OpCodes.Ldarg_0); // 加载 this（当前实例）到栈
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il.Emit(OpCodes.Ldarg_0); // 再次加载 this，用于访问字段
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il.Emit(OpCodes.Ldfld, propertyChangedField); // 加载 this.PropertyChanged 字段值
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il.Emit(OpCodes.Ldarg_1); // 加载方法参数 value（订阅者委托）
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il.Emit(OpCodes.Call, combine); // 调用 Delegate.Combine(a, b)
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il.Emit(OpCodes.Castclass, eventHandlerType); // 强转回 PropertyChangedEventHandler 类型
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il.Emit(OpCodes.Stfld, propertyChangedField); // 赋值给 this.PropertyChanged
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il.Emit(OpCodes.Ret); // return
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}
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// remove_PropertyChanged
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var removeMethod = typeBuilder.DefineMethod("remove_PropertyChanged", MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.Virtual | MethodAttributes.HideBySig, null, new[] { eventHandlerType });
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{
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var il = removeMethod.GetILGenerator();
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var remove = typeof(Delegate).GetMethod("Remove", new[] { typeof(Delegate), typeof(Delegate) });
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// this.PropertyChanged = (PropertyChangedEventHandler)Delegate.Remove(this.PropertyChanged, value);
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il.Emit(OpCodes.Ldarg_0); // 加载 this
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il.Emit(OpCodes.Ldarg_0); // 再次加载 this
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il.Emit(OpCodes.Ldfld, propertyChangedField); // 加载字段 this.PropertyChanged
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il.Emit(OpCodes.Ldarg_1); // 加载 value（要移除的委托）
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il.Emit(OpCodes.Call, remove); // 调用 Delegate.Remove(a, b)
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il.Emit(OpCodes.Castclass, eventHandlerType); // 转换为 PropertyChangedEventHandler
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il.Emit(OpCodes.Stfld, propertyChangedField); // 设置 this.PropertyChanged = 结果
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il.Emit(OpCodes.Ret); // return
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}
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eventBuilder.SetAddOnMethod(addMethod);
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eventBuilder.SetRemoveOnMethod(removeMethod);
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// 定义 OnPropertyChanged 方法
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var onPropertyChangedMethod = typeBuilder.DefineMethod(
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"OnPropertyChanged",
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MethodAttributes.Private,
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null,
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new[] { typeof(string) });
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{
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var il = onPropertyChangedMethod.GetILGenerator();
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var label = il.DefineLabel();
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// if (PropertyChanged == null) return;
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il.Emit(OpCodes.Ldarg_0); // 加载 this
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il.Emit(OpCodes.Ldfld, propertyChangedField); // 加载 this.PropertyChanged
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il.Emit(OpCodes.Brfalse_S, label); // 如果为空（null），跳转到 label，跳过通知调用
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// PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));
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il.Emit(OpCodes.Ldarg_0); // 加载 this（委托调用目标）
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il.Emit(OpCodes.Ldfld, propertyChangedField); // 加载 PropertyChanged 委托
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il.Emit(OpCodes.Ldarg_0); // 加载 this 作为 sender 参数
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il.Emit(OpCodes.Ldarg_1); // 加载 propertyName 参数（string）
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il.Emit(OpCodes.Newobj, typeof(PropertyChangedEventArgs).GetConstructor(new[] { typeof(string) })); // 构造 new PropertyChangedEventArgs(propertyName)
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il.Emit(OpCodes.Callvirt, typeof(PropertyChangedEventHandler).GetMethod("Invoke")); // 调用委托 Invoke(sender, args)
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il.MarkLabel(label); // 跳转目标（如果委托为 null 则跳转至此）
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il.Emit(OpCodes.Ret); // return
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}
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// 为每个属性生成字段 + get/set + OnPropertyChanged 调用
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foreach (var kv in properties)
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{
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string propName = kv.Key;
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Type propType = kv.Value ?? typeof(object);
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var fieldBuilder = typeBuilder.DefineField("_" + propName, propType, FieldAttributes.Private);
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var propertyBuilder = typeBuilder.DefineProperty(propName, PropertyAttributes.HasDefault, propType, null);
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var getter = typeBuilder.DefineMethod("get_" + propName,
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MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig,
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propType, Type.EmptyTypes);
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{
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// get_PropertyName()
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var il = getter.GetILGenerator();
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il.Emit(OpCodes.Ldarg_0); // 加载 this
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il.Emit(OpCodes.Ldfld, fieldBuilder); // 读取私有字段 _PropertyName
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il.Emit(OpCodes.Ret); // 返回字段值
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}
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var setter = typeBuilder.DefineMethod("set_" + propName,
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MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig,
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null, new[] { propType });
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{
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// set_PropertyName(value)
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var il = setter.GetILGenerator();
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il.Emit(OpCodes.Ldarg_0); // 加载 this
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il.Emit(OpCodes.Ldarg_1); // 加载 value 参数
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il.Emit(OpCodes.Stfld, fieldBuilder); // 设置字段 _PropertyName = value
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il.Emit(OpCodes.Ldarg_0); // 加载 this
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il.Emit(OpCodes.Ldstr, propName); // 加载属性名字符串作为通知参数
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il.Emit(OpCodes.Call, onPropertyChangedMethod); // 调用 OnPropertyChanged(propName)
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il.Emit(OpCodes.Ret); // return
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}
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propertyBuilder.SetGetMethod(getter);
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propertyBuilder.SetSetMethod(setter);
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}
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var dynamicType = typeBuilder.CreateType();
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typeCache[typeName] = dynamicType;
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return dynamicType;
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}
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#region 动态创建对象并赋值
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/// <summary>
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/// 创建动态类型及其对象实例
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/// </summary>
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/// <param name="properties"></param>
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/// <param name="typeName"></param>
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/// <returns></returns>
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public static object CreateObjectWithProperties(IDictionary<string, object> properties, string typeName)
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{
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// 如果类型已经缓存，直接返回缓存的类型
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if (typeCache.ContainsKey(typeName))
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{
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return Activator.CreateInstance(typeCache[typeName]);
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}
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// 定义动态程序集和模块
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var assemblyName = new AssemblyName("DynamicAssembly");
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var assemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);
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var moduleBuilder = assemblyBuilder.DefineDynamicModule("MainModule");
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// 定义动态类型
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var typeBuilder = moduleBuilder.DefineType(typeName, TypeAttributes.Public);
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// 为每个属性名和值添加相应的属性到动态类型中
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foreach (var kvp in properties)
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{
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string propName = kvp.Key;
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object propValue = kvp.Value;
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Type propType;
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if (propValue is IList<Dictionary<string, object>>) // 处理数组类型
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{
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var nestedPropValue = (propValue as IList<Dictionary<string, object>>)[0];
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var nestedType = CreateObjectWithProperties(nestedPropValue, $"{propName}Element");
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propType = nestedType.GetType().MakeArrayType(); // 创建数组类型
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}
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else if (propValue is Dictionary<string, object> nestedProperties)
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{
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// 如果值是嵌套的字典，递归创建嵌套类型
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propType = CreateObjectWithProperties(nestedProperties, $"{typeName}_{propName}").GetType();
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}
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else
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{
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// 如果是普通类型，使用值的类型
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propType = propValue?.GetType() ?? typeof(object);
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}
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// 定义私有字段和公共属性
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var fieldBuilder = typeBuilder.DefineField("_" + propName, propType, FieldAttributes.Private);
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var propertyBuilder = typeBuilder.DefineProperty(propName, PropertyAttributes.HasDefault, propType, null);
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// 定义 getter 方法
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var getMethodBuilder = typeBuilder.DefineMethod(
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"get_" + propName,
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MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig,
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propType,
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Type.EmptyTypes);
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var getIL = getMethodBuilder.GetILGenerator();
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getIL.Emit(OpCodes.Ldarg_0);
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getIL.Emit(OpCodes.Ldfld, fieldBuilder);
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getIL.Emit(OpCodes.Ret);
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// 定义 setter 方法
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var setMethodBuilder = typeBuilder.DefineMethod(
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"set_" + propName,
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MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig,
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null,
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new Type[] { propType });
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var setIL = setMethodBuilder.GetILGenerator();
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setIL.Emit(OpCodes.Ldarg_0);
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setIL.Emit(OpCodes.Ldarg_1);
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setIL.Emit(OpCodes.Stfld, fieldBuilder);
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setIL.Emit(OpCodes.Ret);
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// 将 getter 和 setter 方法添加到属性
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propertyBuilder.SetGetMethod(getMethodBuilder);
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propertyBuilder.SetSetMethod(setMethodBuilder);
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}
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// 创建类型并缓存
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var dynamicType = typeBuilder.CreateType();
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typeCache[typeName] = dynamicType;
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// 创建对象实例
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return Activator.CreateInstance(dynamicType);
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}
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/// <summary>
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/// 递归设置对象的属性值
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/// </summary>
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/// <param name="obj"></param>
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/// <param name="properties"></param>
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private static void SetPropertyValues(object obj, Dictionary<string, object> properties)
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{
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var objType = obj.GetType();
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foreach (var kvp in properties)
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{
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||
var propInfo = objType.GetProperty(kvp.Key);
|
||
object value = kvp.Value;
|
||
|
||
// 如果值是嵌套的字典类型，递归处理嵌套对象
|
||
if (value is Dictionary<string, object> nestedProperties)
|
||
{
|
||
// 创建嵌套对象
|
||
var nestedObj = Activator.CreateInstance(propInfo.PropertyType);
|
||
|
||
// 递归设置嵌套对象的值
|
||
SetPropertyValues(nestedObj, nestedProperties);
|
||
|
||
// 将嵌套对象赋值给属性
|
||
propInfo.SetValue(obj, nestedObj);
|
||
}
|
||
else
|
||
{
|
||
// 直接赋值给属性
|
||
propInfo.SetValue(obj, value);
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 递归设置对象的属性值（带验证）
|
||
/// </summary>
|
||
/// <param name="obj"></param>
|
||
/// <param name="properties"></param>
|
||
/// <returns></returns>
|
||
public static bool SetPropertyValuesWithValidation(object obj, IDictionary<string, object> properties)
|
||
{
|
||
var objType = obj.GetType();
|
||
bool allSuccessful = true; // 标记是否所有属性赋值成功
|
||
|
||
foreach (var kvp in properties)
|
||
{
|
||
var propName = kvp.Key;
|
||
var propValue = kvp.Value;
|
||
|
||
var propInfo = objType.GetProperty(propName);
|
||
|
||
if (propInfo == null)
|
||
{
|
||
// 属性不存在，打印警告并标记失败
|
||
SereinEnv.WriteLine(InfoType.WARN, $"属性 '{propName}' 不存在于类型 '{objType.Name}' 中，跳过赋值。");
|
||
allSuccessful = false;
|
||
continue;
|
||
}
|
||
|
||
// 检查属性类型是否与要赋的值兼容
|
||
var targetType = propInfo.PropertyType;
|
||
if (!IsCompatibleType(targetType, propValue))
|
||
{
|
||
// 如果类型不兼容，打印错误并标记失败
|
||
SereinEnv.WriteLine(InfoType.ERROR, $"无法将类型 '{propValue?.GetType().Name}' 赋值给属性 '{propName}' (Type: {targetType.Name})，跳过赋值。");
|
||
allSuccessful = false;
|
||
continue;
|
||
}
|
||
|
||
try
|
||
{
|
||
// 如果值是一个嵌套对象，递归赋值
|
||
if (propValue is Dictionary<string, object> nestedProperties)
|
||
{
|
||
var nestedObj = Activator.CreateInstance(propInfo.PropertyType);
|
||
if (nestedObj != null && SetPropertyValuesWithValidation(nestedObj, nestedProperties))
|
||
{
|
||
propInfo.SetValue(obj, nestedObj);
|
||
}
|
||
else
|
||
{
|
||
allSuccessful = false; // 嵌套赋值失败
|
||
}
|
||
}
|
||
else if (propValue is IList<Dictionary<string, object>> list) // 处理列表
|
||
{
|
||
// 获取目标类型的数组元素类型
|
||
var elementType = propInfo.PropertyType.GetElementType();
|
||
if (elementType != null)
|
||
{
|
||
var array = Array.CreateInstance(elementType, list.Count);
|
||
|
||
for (int i = 0; i < list.Count; i++)
|
||
{
|
||
var item = Activator.CreateInstance(elementType);
|
||
if (item != null && SetPropertyValuesWithValidation(item, list[i]))
|
||
{
|
||
array.SetValue(item, i);
|
||
}
|
||
else
|
||
{
|
||
allSuccessful = false; // 赋值失败
|
||
}
|
||
}
|
||
propInfo.SetValue(obj, array);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
// 直接赋值
|
||
propInfo.SetValue(obj, propValue);
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
SereinEnv.WriteLine(InfoType.ERROR, $"为属性 '{propName}' 赋值时发生异常：{ex.Message}");
|
||
allSuccessful = false;
|
||
}
|
||
}
|
||
|
||
return allSuccessful;
|
||
}
|
||
|
||
// 检查类型兼容性的方法（支持嵌套类型）
|
||
static bool IsCompatibleType(Type targetType, object value)
|
||
{
|
||
if (value == null)
|
||
{
|
||
// 如果值为null，且目标类型是引用类型或者可空类型，则兼容
|
||
return !targetType.IsValueType || Nullable.GetUnderlyingType(targetType) != null;
|
||
}
|
||
|
||
// 检查值的类型是否与目标类型相同，或是否可以转换为目标类型
|
||
if (targetType.IsAssignableFrom(value.GetType()))
|
||
{
|
||
return true;
|
||
}
|
||
|
||
// 处理数组类型
|
||
if (targetType.IsArray)
|
||
{
|
||
// 检查数组的元素类型与值的类型兼容
|
||
var elementType = targetType.GetElementType();
|
||
return value is IList<Dictionary<string, object>>; // 假设值是一个列表，具体处理逻辑在赋值时
|
||
}
|
||
|
||
// 处理嵌套类型的情况
|
||
if (value is Dictionary<string, object> && targetType.IsClass && !targetType.IsPrimitive)
|
||
{
|
||
// 如果目标类型是一个复杂对象，并且值是一个字典，可能是嵌套对象
|
||
return true; // 假设可以递归处理嵌套对象
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
#endregion
|
||
|
||
}
|
||
}
|
