/// <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));
}
/// <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));
}
/// <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));
}
/// <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);
}
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);
}
}
/// <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));
}
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);
}
/// <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));
}
/// <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));
}
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());
}
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);
}
}
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));
}
}
/// <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));
}
/// <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);
}
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);
}
}
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));
}
/// <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));
}
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
}
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
}
public override Object CreateInstance(Type type, params Object[] parameters)
{
return(TypeX.CreateInstance(type, parameters));
}
/// <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));
}
/// <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
}
/// <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));
}
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);
}
/// <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));
}
