Пример #1
0
        /// <summary>通过字典参数调用</summary>
        /// <param name="obj"></param>
        /// <param name="parameters">参数数组</param>
        /// <returns></returns>
        public Object InvokeWithParams(Object obj, IDictionary parameters)
        {
            //// 没有传入参数
            //if (parameters == null || parameters.Count < 1) return Invoke(obj, null);
            //! 注意:有可能没有传入参数,但是该方法是需要参数的,这个时候采用全部null的方法

            // 该方法没有参数,无视外部传入参数
            var pis = Method.GetParameters();

            if (pis == null || pis.Length < 1)
            {
                return(Invoke(obj, null));
            }

            Object[] ps = new Object[pis.Length];
            for (int i = 0; i < pis.Length; i++)
            {
                Object v = null;
                if (parameters != null && parameters.Contains(pis[i].Name))
                {
                    v = parameters[pis[i].Name];
                }
                ps[i] = TypeX.ChangeType(v, pis[i].ParameterType);
            }

            return(Handler.Invoke(obj, ps));
        }
Пример #2
0
        /// <summary>执行表达式,返回结果。参数名默认为p0/p1/p2/pn</summary>
        /// <param name="code"></param>
        /// <param name="parameters"></param>
        /// <returns></returns>
        public static Object Execute(String code, Object[] parameters)
        {
            if (parameters == null || parameters.Length < 1)
            {
                return(Execute(code));
            }

            var se = Create(code);

            if (se != null && se.Method != null)
            {
                return(se.Invoke(parameters));
            }

            var names = new String[parameters.Length];

            for (int i = 0; i < names.Length; i++)
            {
                names[i] = "p" + i;
            }
            var types = TypeX.GetTypeArray(parameters);

            var dic = se.Parameters;

            for (int i = 0; i < names.Length; i++)
            {
                dic.Add(names[i], types[i]);
            }

            return(se.Invoke(parameters));
        }
Пример #3
0
        /// <summary>执行表达式,返回结果</summary>
        /// <param name="code">代码片段</param>
        /// <param name="parameters">参数名值对</param>
        /// <returns></returns>
        public static Object Execute(String code, IDictionary <String, Object> parameters)
        {
            if (parameters == null || parameters.Count < 1)
            {
                return(Execute(code));
            }

            var ps = new Object[parameters.Count];

            parameters.Values.CopyTo(ps, 0);

            var se = Create(code);

            if (se != null && se.Method != null)
            {
                return(se.Invoke(ps));
            }

            var names = new String[parameters.Count];

            parameters.Keys.CopyTo(names, 0);
            var types = TypeX.GetTypeArray(ps);

            var dic = se.Parameters;

            for (int i = 0; i < names.Length; i++)
            {
                dic.Add(names[i], types[i]);
            }

            return(se.Invoke(ps));
        }
Пример #4
0
        /// <summary>转换多个对象</summary>
        /// <typeparam name="TInterface"></typeparam>
        /// <param name="objects"></param>
        /// <returns></returns>
        public static TInterface[] Implement <TInterface>(params object[] objects)
        {
            if (objects == null)
            {
                throw new ArgumentNullException("objects");
            }

            Type interfaceType = typeof(TInterface);

            ValidateInterfaceType(interfaceType);

            Type[] duckedTypes = new Type[objects.Length];
            for (int i = 0; i < objects.Length; i++)
            {
                duckedTypes[i] = objects[i].GetType();
            }

            Type[] duckTypes = GetDuckTypes(interfaceType, duckedTypes);

            TInterface[] ducks = new TInterface[objects.Length];
            for (int i = 0; i < objects.Length; i++)
            {
                //ducks[i] = (TInterface)Activator.CreateInstance(duckTypes[i], objects[i]);
                ducks[i] = (TInterface)TypeX.CreateInstance(duckTypes[i], objects[i]);
            }

            return(ducks);
        }
Пример #5
0
        public List <Type> FindPlugins(Type baseType)
        {
            // 如果type是null,则返回所有类型

            List <Type> list = null;

            if (_plugins.TryGetValue(baseType, out list))
            {
                return(list);
            }
            lock (_plugins)
            {
                if (_plugins.TryGetValue(baseType, out list))
                {
                    return(list);
                }

                list = new List <Type>();
                foreach (var item in Types)
                {
                    if (TypeX.Create(item).IsPlugin(baseType))
                    {
                        list.Add(item);
                    }
                }
                if (list.Count <= 0)
                {
                    list = null;
                }

                _plugins.Add(baseType, list);

                return(list);
            }
        }
Пример #6
0
        /// <summary>创建</summary>
        /// <param name="type">类型</param>
        /// <param name="name">名称</param>
        /// <param name="paramTypes">参数类型</param>
        /// <returns></returns>
        public static MethodInfoX Create(Type type, String name, Type[] paramTypes)
        {
            //var method = type.GetMethod(name, paramTypes);
            //if (method == null) method = type.GetMethod(name, DefaultBinding, null, paramTypes, null);
            //if (method == null) method = type.GetMethod(name, DefaultBinding | BindingFlags.IgnoreCase, null, paramTypes, null);
            //if (method == null && type.BaseType != typeof(Object)) return Create(type.BaseType, name, paramTypes);
            var method = TypeX.GetMethod(type, name, paramTypes);

            if (method == null)
            {
                return(null);
            }

            return(Create(method));
        }
Пример #7
0
        public override void SetValue(Object obj, Object value)
        {
            if (SetHandler == null)
            {
                throw new InvalidOperationException("不支持SetValue操作!");
            }

            // 如果类型不匹配,先做类型转换
            if (value != null && !Type.IsAssignableFrom(value.GetType()))
            {
                value = TypeX.ChangeType(value, Type);
            }

            SetHandler.Invoke(obj, value);
        }
Пример #8
0
        /// <summary>转换单个对象</summary>
        /// <param name="obj"></param>
        /// <param name="interfaceType"></param>
        /// <returns></returns>
        public static Object Implement(Object obj, Type interfaceType)
        {
            if (obj == null)
            {
                throw new ArgumentNullException("obj");
            }

            //Type duckedType = obj.GetType();

            ValidateInterfaceType(interfaceType);

            Type duckType = GetDuckType(interfaceType, obj.GetType());

            //return Activator.CreateInstance(duckType, obj);
            return(TypeX.CreateInstance(duckType, obj));
        }
Пример #9
0
        /// <summary>快速调用静态方法</summary>
        /// <typeparam name="TTarget">目标类型</typeparam>
        /// <typeparam name="TResult">返回类型</typeparam>
        /// <param name="name">名称</param>
        /// <param name="parameters">参数数组</param>
        /// <returns></returns>
        public static TResult Invoke <TTarget, TResult>(String name, params Object[] parameters)
        {
            if (String.IsNullOrEmpty(name))
            {
                throw new ArgumentNullException("name");
            }

            MethodInfoX mix = Create(typeof(TTarget), name, TypeX.GetTypeArray(parameters));

            if (mix == null)
            {
                throw new XException("类{0}中无法找到{1}方法!", typeof(TTarget).Name, name);
            }

            return((TResult)mix.Invoke(null, parameters));
        }
Пример #10
0
        String GetName(Boolean isfull, Boolean includeDefType = true)
        {
            var method = _Method;

            var    sb   = new StringBuilder();
            String name = null;

            if (includeDefType)
            {
                var type = method.DeclaringType ?? method.ReflectedType;
                if (type != null)
                {
                    var tx = TypeX.Create(type);
                    name = isfull ? tx.FullName : tx.Name;
                }
                else
                {
                    name = "";
                }
            }
            sb.AppendFormat("{0}.", name);
            sb.Append(method.Name);
            sb.Append("(");
            var ps = method.GetParameters();

            for (int i = 0; i < ps.Length; i++)
            {
                if (i > 0)
                {
                    sb.Append(",");
                }

                if (ps[i].ParameterType != null)
                {
                    var tx = TypeX.Create(ps[i].ParameterType);
                    name = isfull ? tx.FullName : tx.Name;
                }
                else
                {
                    name = "";
                }
                sb.AppendFormat("{0} {1}", name, ps[i].Name);
            }
            sb.Append(")");
            return(sb.ToString());
        }
Пример #11
0
        String GetName(Boolean isfull)
        {
            Type type = Type;

            if (type.IsNested)
            {
                var tx = TypeX.Create(type.DeclaringType);
                return((isfull ? tx.FullName : tx.Name) + "." + type.Name);
            }
            else if (type.IsGenericType)
            {
                var sb      = new StringBuilder();
                var typeDef = type.GetGenericTypeDefinition();
                var name    = isfull ? typeDef.FullName : typeDef.Name;
                var p       = name.IndexOf("`");
                if (p >= 0)
                {
                    sb.Append(name.Substring(0, p));
                }
                else
                {
                    sb.Append(name);
                }
                sb.Append("<");
                var ts = type.GetGenericArguments();
                for (int i = 0; i < ts.Length; i++)
                {
                    if (i > 0)
                    {
                        sb.Append(",");
                    }
                    if (!ts[i].IsGenericParameter)
                    {
                        var tx = TypeX.Create(ts[i]);
                        sb.Append(isfull ? tx.FullName : tx.Name);
                    }
                }
                sb.Append(">");
                return(sb.ToString());
            }
            else
            {
                return(isfull ? type.FullName : type.Name);
            }
        }
Пример #12
0
        public override Object Invoke(Object obj, params Object[] parameters)
        {
            if (parameters == null || parameters.Length <= 0)
            {
                return(Handler.Invoke(obj, null));
            }
            else
            {
                // 预处理参数类型
                var pis = Parameters;
                for (int i = 0; i < parameters.Length && i < pis.Length; i++)
                {
                    parameters[i] = TypeX.ChangeType(parameters[i], pis[i].ParameterType);
                }

                return(Handler.Invoke(obj, parameters));
            }
        }
Пример #13
0
        /// <summary>获取方法</summary>
        /// <remarks>用于具有多个签名的同名方法的场合,不确定是否存在性能问题,不建议普通场合使用</remarks>
        /// <param name="type">类型</param>
        /// <param name="name">名称</param>
        /// <param name="paramTypes">参数类型数组</param>
        /// <returns></returns>
        public override MethodInfo GetMethod(Type type, String name, params Type[] paramTypes)
        {
            // 参数数组必须为空,或者所有参数类型都不为null,才能精确匹配
            if (paramTypes == null || paramTypes.Length == 0 || paramTypes.All(t => t != null))
            {
                var method = base.GetMethod(type, name, paramTypes);
                if (method != null)
                {
                    return(method);
                }
            }

            // 任意参数类型为null,换一种匹配方式
            if (paramTypes.Any(t => t == null))
            {
                var ms = GetMethods(type, name, paramTypes.Length);
                if (ms == null || ms.Length == 0)
                {
                    return(null);
                }

                // 对比参数
                foreach (var mi in ms)
                {
                    var ps   = mi.GetParameters();
                    var flag = true;
                    for (int i = 0; i < ps.Length; i++)
                    {
                        if (paramTypes[i] != null && !ps[i].ParameterType.IsAssignableFrom(paramTypes[i]))
                        {
                            flag = false;
                            break;
                        }
                    }
                    if (flag)
                    {
                        return(mi);
                    }
                }
            }

            return(TypeX.GetMethod(type, name, paramTypes));
        }
Пример #14
0
        /// <summary>创建快速访问成员</summary>
        /// <param name="member"></param>
        /// <returns></returns>
        public static MemberInfoX Create(MemberInfo member)
        {
            if (member == null)
            {
                return(null);
            }

            switch (member.MemberType)
            {
            case MemberTypes.All:
                break;

            case MemberTypes.Constructor:
                return(ConstructorInfoX.Create(member as ConstructorInfo));

            case MemberTypes.Custom:
                break;

            case MemberTypes.Event:
                return(EventInfoX.Create(member as EventInfo));

            case MemberTypes.Field:
                return(FieldInfoX.Create(member as FieldInfo));

            case MemberTypes.Method:
                return(MethodInfoX.Create(member as MethodInfo));

            case MemberTypes.Property:
                return(PropertyInfoX.Create(member as PropertyInfo));

            case MemberTypes.TypeInfo:
            case MemberTypes.NestedType:
                return(TypeX.Create(member as Type));

            default:
                break;
            }
            return(null);
        }
Пример #15
0
        public override void SetValue(Object obj, Object value)
        {
            // 如果类型不匹配,先做类型转换
            if (value != null && !Type.IsAssignableFrom(value.GetType()))
            {
                value = TypeX.ChangeType(value, Type);
            }

            // SetHandler不支持值类型
            if (Field.DeclaringType.IsValueType)
            {
                // 不相等才赋值
                Object v = GetValue(obj);
                if (!Object.Equals(value, v))
                {
                    Field.SetValue(obj, value);
                }
            }
            else
            {
                SetHandler.Invoke(obj, value);
            }
        }
Пример #16
0
        public override Object CreateInstance(params Object[] parameters)
        {
            if (Type.ContainsGenericParameters || Type.IsGenericTypeDefinition)
            {
                throw new XException(Type.FullName + "类是泛型定义类,缺少泛型参数!");
            }

            if (Type.IsValueType || Type.IsArray)
            {
                return(Handler.Invoke(parameters));
            }

            // 准备参数类型数组,以匹配构造函数
            //var paramTypes = Type.EmptyTypes;
            //if (parameters != null && parameters.Length > 0)
            //{
            //    var list = new List<Type>();
            //    foreach (var item in parameters)
            //    {
            //        if (item != null)
            //            list.Add(item.GetType());
            //        else
            //            list.Add(typeof(Object));
            //    }
            //    paramTypes = list.ToArray();
            //}
            var paramTypes = TypeX.GetTypeArray(parameters);
            var ctor       = GetConstructor(paramTypes);
            var handler    = GetHandler(ctor);

            if (handler != null)
            {
                return(handler.Invoke(parameters));
            }
            if (paramTypes != Type.EmptyTypes)
            {
                paramTypes = Type.EmptyTypes;
                ctor       = GetConstructor(paramTypes);
                handler    = GetHandler(ctor);
                if (handler != null)
                {
                    // 更换了构造函数,要重新构造构造函数的参数
                    var ps = ctor.GetParameters();
                    parameters = new Object[ps.Length];
                    for (int i = 0; i < ps.Length; i++)
                    {
                        // 处理值类型
                        if (ps[i].ParameterType.IsValueType)
                        {
                            parameters[i] = TypeX.CreateInstance(ps[i].ParameterType);
                        }
                        else
                        {
                            parameters[i] = null;
                        }
                    }

                    // 如果这里创建失败,后面还可以创建一个未初始化
                    try
                    {
                        return(handler.Invoke(parameters));
                    }
                    catch { }
                }
            }

            // 如果没有找到构造函数,则创建一个未初始化的对象
            return(FormatterServices.GetSafeUninitializedObject(Type));
        }
Пример #17
0
 /// <summary>获取一个类型的元素类型</summary>
 /// <param name="type">类型</param>
 /// <returns></returns>
 public override Type GetElementType(Type type)
 {
     return(TypeX.GetElementType(type));
 }
Пример #18
0
        public Type[] CreateDuckTypes(Type interfaceType, Type[] duckedTypes)
        {
            const string TYPE_PREFIX = "Duck";

            String namespaceName = this.GetType().Namespace + "." + interfaceType.Name;

            CodeCompileUnit codeCU  = new CodeCompileUnit();
            CodeNamespace   codeNsp = new CodeNamespace(namespaceName);

            codeCU.Namespaces.Add(codeNsp);

            //CodeTypeReference codeTRInterface = new CodeTypeReference(interfaceType);
            CodeTypeReference codeTRInterface = new CodeTypeReference(TypeX.Create(interfaceType).FullName);
            ReferenceList     references      = new ReferenceList();

            // 遍历处理每一个需要代理的类
            for (int i = 0; i < duckedTypes.Length; i++)
            {
                Type objectType = duckedTypes[i];

                //CodeTypeReference codeTRObject = new CodeTypeReference(objectType);
                CodeTypeReference codeTRObject = new CodeTypeReference(TypeX.Create(objectType).FullName);
                references.AddReference(objectType);

                CodeTypeDeclaration codeType = new CodeTypeDeclaration(TYPE_PREFIX + i);
                codeNsp.Types.Add(codeType);

                codeType.TypeAttributes = TypeAttributes.Public;
                codeType.BaseTypes.Add(codeTRInterface);

                // 声明一个字段
                CodeMemberField codeFldObj = new CodeMemberField(codeTRObject, "_obj");
                codeType.Members.Add(codeFldObj);
                CodeFieldReferenceExpression codeFldRef = new CodeFieldReferenceExpression(new CodeThisReferenceExpression(), codeFldObj.Name);

                // 创建一个构造函数
                CodeConstructor codeCtor = new CodeConstructor();
                codeType.Members.Add(codeCtor);
                codeCtor.Attributes = MemberAttributes.Public;
                codeCtor.Parameters.Add(new CodeParameterDeclarationExpression(codeTRObject, "obj"));
                codeCtor.Statements.Add(
                    new CodeAssignStatement(
                        codeFldRef,
                        new CodeArgumentReferenceExpression("obj")
                        )
                    );

                // 创建成员
                CreateMember(interfaceType, objectType, codeType, references, codeFldRef);
            }

            #region 编译
            CSharpCodeProvider codeprov = new CSharpCodeProvider();

#if DEBUG
            {
                StringWriter sw = new StringWriter();
                codeprov.GenerateCodeFromCompileUnit(codeCU, sw, new CodeGeneratorOptions());
                string code = sw.ToString();
                Console.WriteLine(code);
            }
#endif

            CompilerParameters compilerParams = new CompilerParameters();
            compilerParams.GenerateInMemory = true;
            compilerParams.ReferencedAssemblies.Add(interfaceType.Assembly.Location);

            references.SetToCompilerParameters(compilerParams);

            CompilerResults cres = codeprov.CompileAssemblyFromDom(compilerParams, codeCU);
            if (cres.Errors.Count > 0)
            {
                StringWriter sw = new StringWriter();
                foreach (CompilerError err in cres.Errors)
                {
                    sw.WriteLine(err.ErrorText);
                }

                throw new InvalidOperationException("编译错误: \n\n" + sw.ToString());
            }

            Assembly assembly = cres.CompiledAssembly;

            Type[] res = new Type[duckedTypes.Length];
            for (int i = 0; i < duckedTypes.Length; i++)
            {
                res[i] = assembly.GetType(namespaceName + "." + TYPE_PREFIX + i);
            }

            return(res);

            #endregion
        }
Пример #19
0
        void CreateMember(Type interfaceType, Type duckType, CodeTypeDeclaration codeType, ReferenceList references, CodeFieldReferenceExpression codeFldRef)
        {
            CodeTypeReference codeTRInterface = new CodeTypeReference(TypeX.Create(interfaceType).FullName);

            //// 找到duckType里面是否有公共的_obj;
            //FieldInfo fiObj = duckType.GetField("_obj", BindingFlags.Public | BindingFlags.Instance);
            //Type innerType = fiObj != null ? fiObj.FieldType : null;

            CodeFieldReferenceExpression fdRef = null;

            #region 方法
            foreach (var mi in interfaceType.GetMethods())
            {
                // 忽略专用名字的方法,如属性的get/set,还有构造函数
                if ((mi.Attributes & MethodAttributes.SpecialName) != 0)
                {
                    continue;
                }

                CodeMemberMethod codeMethod = new CodeMemberMethod();
                codeType.Members.Add(codeMethod);

                codeMethod.Name       = mi.Name;
                codeMethod.ReturnType = new CodeTypeReference(mi.ReturnType);
                codeMethod.PrivateImplementationType = codeTRInterface;

                references.AddReference(mi.ReturnType);

                ParameterInfo[] parameters = mi.GetParameters();
                CodeArgumentReferenceExpression[] codeArgs = new CodeArgumentReferenceExpression[parameters.Length];

                int    n    = 0;
                Type[] pits = new Type[parameters.Length];
                foreach (ParameterInfo parameter in parameters)
                {
                    pits[n] = parameter.ParameterType;

                    references.AddReference(parameter.ParameterType);
                    CodeParameterDeclarationExpression codeParam = new CodeParameterDeclarationExpression(parameter.ParameterType, parameter.Name);
                    codeMethod.Parameters.Add(codeParam);
                    codeArgs[n++] = new CodeArgumentReferenceExpression(parameter.Name);
                }

                CodeMethodInvokeExpression codeMethodInvoke = new CodeMethodInvokeExpression(FindMember(duckType, mi, codeFldRef), mi.Name, codeArgs);

                if (mi.ReturnType == typeof(void))
                {
                    codeMethod.Statements.Add(codeMethodInvoke);
                }
                else
                {
                    codeMethod.Statements.Add(new CodeMethodReturnStatement(codeMethodInvoke));
                }
            }
            #endregion

            #region 属性
            foreach (PropertyInfo pi in interfaceType.GetProperties())
            {
                CodeMemberProperty property = new CodeMemberProperty();
                codeType.Members.Add(property);

                property.Name       = pi.Name;
                property.Type       = new CodeTypeReference(pi.PropertyType);
                property.Attributes = MemberAttributes.Public;
                property.PrivateImplementationType = codeTRInterface;

                references.AddReference(pi.PropertyType);

                ParameterInfo[] parameters             = pi.GetIndexParameters();
                CodeArgumentReferenceExpression[] args = new CodeArgumentReferenceExpression[parameters.Length];

                int n = 0;
                foreach (ParameterInfo parameter in parameters)
                {
                    CodeParameterDeclarationExpression codeParam = new CodeParameterDeclarationExpression(parameter.ParameterType, parameter.Name);
                    property.Parameters.Add(codeParam);

                    references.AddReference(parameter.ParameterType);

                    CodeArgumentReferenceExpression codeArgRef = new CodeArgumentReferenceExpression(parameter.Name);
                    args[n++] = codeArgRef;
                }

                fdRef = FindMember(duckType, pi, codeFldRef);

                if (pi.CanRead)
                {
                    property.HasGet = true;

                    if (args.Length == 0)
                    {
                        property.GetStatements.Add(
                            new CodeMethodReturnStatement(
                                new CodePropertyReferenceExpression(
                                    fdRef,
                                    pi.Name
                                    )
                                )
                            );
                    }
                    else
                    {
                        property.GetStatements.Add(
                            new CodeMethodReturnStatement(
                                new CodeIndexerExpression(
                                    fdRef,
                                    args
                                    )
                                )
                            );
                    }
                }

                if (pi.CanWrite)
                {
                    property.HasSet = true;

                    if (args.Length == 0)
                    {
                        property.SetStatements.Add(
                            new CodeAssignStatement(
                                new CodePropertyReferenceExpression(
                                    fdRef,
                                    pi.Name
                                    ),
                                new CodePropertySetValueReferenceExpression()
                                )
                            );
                    }
                    else
                    {
                        property.SetStatements.Add(
                            new CodeAssignStatement(
                                new CodeIndexerExpression(
                                    fdRef,
                                    args
                                    ),
                                new CodePropertySetValueReferenceExpression()
                                )
                            );
                    }
                }
            }
            #endregion

            #region 事件
            foreach (EventInfo ei in interfaceType.GetEvents())
            {
                fdRef = FindMember(duckType, ei, codeFldRef);

                StringBuilder sbCode = new StringBuilder();
                sbCode.Append("public event " + ei.EventHandlerType.FullName + " @" + ei.Name + "{");
                //sbCode.Append("add    {" + codeFldObj.Name + "." + ei.Name + "+=value;}");
                //sbCode.Append("remove {" + codeFldObj.Name + "." + ei.Name + "-=value;}");
                if (fdRef == codeFldRef)
                {
                    sbCode.Append("add    {" + codeFldRef.FieldName + "." + ei.Name + "+=value;}");
                    sbCode.Append("remove {" + codeFldRef.FieldName + "." + ei.Name + "-=value;}");
                }
                else
                {
                    sbCode.Append("add    {" + fdRef.FieldName + "." + codeFldRef.FieldName + "." + ei.Name + "+=value;}");
                    sbCode.Append("remove {" + fdRef.FieldName + "." + codeFldRef.FieldName + "." + ei.Name + "-=value;}");
                }
                sbCode.Append("}");

                references.AddReference(ei.EventHandlerType);

                codeType.Members.Add(new CodeSnippetTypeMember(sbCode.ToString()));
            }
            #endregion

            #region 递归基接口
            Type[] ts = interfaceType.GetInterfaces();
            if (ts != null && ts.Length > 0)
            {
                foreach (Type item in ts)
                {
                    CreateMember(item, duckType, codeType, references, codeFldRef);
                }
            }
            #endregion
        }
Пример #20
0
 public override Object CreateInstance(Type type, params Object[] parameters)
 {
     return(TypeX.CreateInstance(type, parameters));
 }
Пример #21
0
 /// <summary>类型转换</summary>
 /// <param name="value">数值</param>
 /// <param name="conversionType"></param>
 /// <returns></returns>
 public override Object ChangeType(Object value, Type conversionType)
 {
     return(TypeX.ChangeType(value, conversionType));
 }
Пример #22
0
        /// <summary></summary>
        public static void Test()
        {
            XTrace.WriteLine("创建类型……");

            #region TypeX类型
            TypeX  type = TypeX.Create(typeof(FastTest));
            Object obj  = type.CreateInstance();
            Debug.Assert(obj != null, "创建实例出错!");

            obj = type.CreateInstance(123);
            Debug.Assert(obj != null, "创建实例出错!");

            //obj = type.CreateInstance("1234");
            //Debug.Assert(obj != null, "创建实例出错!");

            obj = type.CreateInstance(111, "aaa");
            Debug.Assert(obj != null, "创建实例出错!");

            XTrace.WriteLine("创建值类型实例");
            type = TypeX.Create(typeof(ConsoleKeyInfo));
            obj  = type.CreateInstance();
            Debug.Assert(obj != null, "创建值类型实例出错!");

            XTrace.WriteLine("创建数组类型实例");
            type = TypeX.Create(typeof(ConsoleKeyInfo[]));
            obj  = type.CreateInstance(5);
            Debug.Assert(obj != null, "创建数组类型实例出错!");
            #endregion

            #region 构造函数
            ConstructorInfoX ctr = ConstructorInfoX.Create(typeof(FastTest));
            obj = ctr.CreateInstance();
            Debug.Assert(obj != null, "创建实例出错!");

            ctr = ConstructorInfoX.Create(typeof(FastTest), new Type[] { typeof(Int32) });
            obj = ctr.CreateInstance(123);
            Debug.Assert(obj != null, "创建实例出错!");
            ctr = ConstructorInfoX.Create(typeof(FastTest), new Type[] { typeof(Int32), typeof(String) });
            obj = ctr.CreateInstance(111, "aaa");
            Debug.Assert(obj != null, "创建实例出错!");
            #endregion

            #region 字段
            FieldInfoX field = FieldInfoX.Create(typeof(FastTest), "_ID");
            (obj as FastTest).ID = 111;
            Int32 v = (Int32)field.GetValue(obj);
            Debug.Assert(v == 111, "字段取值出错!");
            field.SetValue(obj, 888);
            v = (Int32)field.GetValue(obj);
            Debug.Assert(v == 888, "字段赋值出错!");

            KeyValuePair <Int32, Int32> kv = new KeyValuePair <int, int>(123456, 222);
            field = FieldInfoX.Create(kv.GetType(), "Key");
            //field.SetValue(kv, 123456);
            v = (Int32)field.GetValue(kv);
            Debug.Assert(v == 123456, "字段取值出错!");

            field = FieldInfoX.Create(typeof(FastTest), "_Name");
            field.SetValue("动态赋值");
            String v2 = (String)field.GetValue();
            Debug.Assert(v2 == "动态赋值", "静态字段出错!");
            #endregion

            #region 属性
            PropertyInfoX p = typeof(FastTest).GetProperty("ID");

            v = (Int32)p.GetValue(obj);
            Debug.Assert(v == 888, "属性取值出错!");
            p.SetValue(obj, 999);
            v = (Int32)p.GetValue(obj);
            Debug.Assert(v == 999, "属性赋值出错!");

            p = PropertyInfoX.Create(typeof(FastTest), "Name");
            field.SetValue("属性动态赋值");
            v2 = (String)field.GetValue();
            Debug.Assert(v2 == "属性动态赋值", "静态字段出错!");
            #endregion

            #region 方法
            MethodInfoX method = MethodInfoX.Create(typeof(FastTest), "Test2");
            method.Invoke(obj);

            method = typeof(FastTest).GetMethod("GetFullName");
            Console.WriteLine(method.Invoke(null, 123, "abc"));
            #endregion
        }
Пример #23
0
 /// <summary>获取类型的友好名称</summary>
 /// <param name="type">指定类型</param>
 /// <param name="isfull">是否全名,包含命名空间</param>
 /// <returns></returns>
 public override String GetName(Type type, Boolean isfull)
 {
     return(TypeX.GetName(type, isfull));
 }
Пример #24
0
        public override Object CreateInstance(params Object[] parameters)
        {
            if (Type.ContainsGenericParameters || Type.IsGenericTypeDefinition)
            {
                throw new XException(Type.FullName + "类是泛型定义类,缺少泛型参数!");
            }

            if (Type.IsValueType)
            {
                return(Handler.Invoke(parameters));
            }

            // 数组的动态构造参数是元素个数,如果未指定,应该默认0
            if (Type.IsArray)
            {
                if (parameters == null || parameters.Length < 1)
                {
                    parameters = new Object[] { 0 }
                }
                ;
                return(Handler.Invoke(parameters));
            }

            //// 无参数,直接构造
            //if (parameters == null || parameters.Length < 1) return Handler.Invoke(new Object[0]);

            // 准备参数类型数组,以匹配构造函数
            //var paramTypes = Type.EmptyTypes;
            //if (parameters != null && parameters.Length > 0)
            //{
            //    var list = new List<Type>();
            //    foreach (var item in parameters)
            //    {
            //        if (item != null)
            //            list.Add(item.GetType());
            //        else
            //            list.Add(typeof(Object));
            //    }
            //    paramTypes = list.ToArray();
            //}
            var paramTypes = TypeX.GetTypeArray(parameters);
            var ctor       = GetConstructor(paramTypes);
            var handler    = GetHandler(ctor);

            if (handler != null)
            {
                return(handler.Invoke(parameters));
            }
            if (paramTypes != Type.EmptyTypes)
            {
                paramTypes = Type.EmptyTypes;
                ctor       = GetConstructor(paramTypes);
                handler    = GetHandler(ctor);
                if (handler != null)
                {
                    // 更换了构造函数,要重新构造构造函数的参数
                    var ps = ctor.GetParameters();
                    parameters = new Object[ps.Length];
                    for (int i = 0; i < ps.Length; i++)
                    {
                        // 处理值类型
                        if (ps[i].ParameterType.IsValueType)
                        {
                            parameters[i] = TypeX.CreateInstance(ps[i].ParameterType);
                        }
                        else
                        {
                            parameters[i] = null;
                        }
                    }

                    // 如果这里创建失败,后面还可以创建一个未初始化
                    try
                    {
                        return(handler.Invoke(parameters));
                    }
                    catch { }
                }
            }

            // 如果没有找到构造函数,则创建一个未初始化的对象
            return(FormatterServices.GetSafeUninitializedObject(Type));
        }

        DictionaryCache <ConstructorInfo, FastHandler> _cache = new DictionaryCache <ConstructorInfo, FastHandler>();
        FastHandler GetHandler(ConstructorInfo constructor)
        {
            if (constructor == null)
            {
                return(null);
            }

            return(_cache.GetItem(constructor, key => GetConstructorInvoker(Type, key)));
        }

        ConstructorInfo GetConstructor(Type[] paramTypes)
        {
            var bf = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic;

            // 1,如果参数为null,则找第一个参数
            // 2,根据参数找一次,如果参数为空,也许能找到无参构造函数
            // 3,如果还没找到,参数又为空,采用第一个构造函数。这里之所以没有和第一步合并,主要是可能调用者只想要无参构造函数,而第一个不是

            ConstructorInfo constructor = null;

            if (paramTypes == null)
            {
                constructor = Type.GetConstructors(bf).FirstOrDefault();
                paramTypes  = Type.EmptyTypes;
            }
            if (constructor == null)
            {
                constructor = Type.GetConstructor(bf, null, paramTypes, null);
            }
            //if (constructor == null) throw new Exception("没有找到匹配的构造函数!");
            if (constructor == null && paramTypes == Type.EmptyTypes)
            {
                constructor = Type.GetConstructors(bf).FirstOrDefault();
            }

            return(constructor);
        }
Пример #25
0
 /// <summary>根据名称获取类型</summary>
 /// <param name="typeName">类型名</param>
 /// <param name="isLoadAssembly">是否从未加载程序集中获取类型。使用仅反射的方法检查目标类型,如果存在,则进行常规加载</param>
 /// <returns></returns>
 public override Type GetType(String typeName, Boolean isLoadAssembly)
 {
     return(TypeX.GetType(typeName, isLoadAssembly));
 }