System.Object
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
using System.Runtime.ConstrainedExecution;
using System.Reflection;
using System.Globalization;
using System.Runtime.Remoting;
namespace System
{
[Serializable,ComVisible(true),ClassInterface(ClassInterfaceType.AutoDual)]
public class Object
{
[ReliabilityContract(Consistency.WillNotCorruptState,Cer.MayFail)]
public Object()
{
//.maxstack 8
//IL_0000: ret
}
/// <summary>
/// return this.GetType().ToString();
/// </summary>
/// <returns></returns>
public new virtual string ToString()
{
//.maxstack 8
//IL_0000: ldarg.0
//IL_0001: call instance class System.Type System.Object::GetType()
//IL_0006: callvirt instance string System.Object::ToString()
//IL_000b: ret
return this.GetType().ToString();
}
public new virtual bool Equals(object obj)
{
//.maxstack 8
//IL_0000: ldarg.0
//IL_0001: ldarg.1
//IL_0002: call bool System.Object::InternalEquals(object,object)
//IL_0007: ret
return InternalEquals(this,obj);
}
[MethodImpl(MethodImplAttributes.InternalCall)]
internal static bool InternalEquals(object objA,object objB)
{
//internalcall
}
/// <summary>
/// 对象地址相同返回true，如果不同而两者皆非null,则返回objA.Equals(objB),有null者返回false。
/// 地址由native int(IL)表示,对应于BCL中的System.IntPtr,其大小取决于操作系统平台字长可为32/64位
/// 同时可知System.Object.Equals(null,null)==true，对象变量为null表示地址为初始值0，意即未指向有效对象。
/// </summary>
/// <param name="objA"></param>
/// <param name="objB"></param>
/// <returns></returns>
public static bool Equals(object objA, object objB)
{
//.maxstack 8
//IL_0000: ldarg.0
//IL_0001: ldarg.1
//IL_0002: bne.un.s IL_0006
//IL_0004: ldc.i4.1
//IL_0005: ret
//IL_0006: ldarg.0
//IL_0007: brfalse.s IL_000c
//IL_0009: ldarg.1
//IL_000a: brtrue.s IL_000e
//IL_000c: ldc.i4.0
//IL_000d: ret
//IL_000e: ldarg.0
//IL_000f: ldarg.1
//IL_0010: callvirt instance bool System.Object::Equals(object)
//IL_0015: ret
if (objA == objB)
{
return true;
}
else
{
if (objA != null && objB != null)
{
return objA.Equals(objB);
}
else
{
return false;
}
}
//关于相等运算符的csharp解析：
//查找是否有匹配等号两边类型的==运算符过载（顺序也必须一致），并调用之。
//如果没有，对于同是引用类型的直接比较两者的地址(ceq,beq)，
//对于同为primitive type值类型直接可以转换成简单的IL指令；
//其他情况csharp无法解析，抛出异常。
}
/// <summary>
/// 直接比较对象地址
/// </summary>
/// <param name="objA"></param>
/// <param name="objB"></param>
/// <returns></returns>
[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
public static bool ReferenceEquals(object objA,object objB)
{
//.maxstack 8
//IL_0000: ldarg.0
//IL_0001: ldarg.1
//IL_0002: ceq
//IL_0004: ret
if (objA == objB)
{
return true;
}
else
{
return false;
}
}
public new virtual int GetHashCode()
{
//.maxstack 8
//IL_0000: ldarg.0
//IL_0001: call int32 System.Object::InternalGetHashCode(object)
//IL_0006: ret
return InternalGetHashCode(this);
}
[MethodImpl(MethodImplAttributes.InternalCall)]
internal static int InternalGetHashCode(object obj)
{
//internalcall
}
[MethodImpl(MethodImplAttributes.InternalCall)]
public Type GetType()
{
//internalcall
}
[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
protected virtual ~Object()
{
//.maxstack 8
//IL_0000: ret
}
[MethodImpl(MethodImplAttributes.InternalCall)]
protected object MemberwiseClone()
{
//internalcall
}
/// <summary>
/// 利用GetFieldInfo找到相应字段，然后利用反射技术(FieldInfo.SetValue())将值改为val;
/// 修改前发送相应的字段值修改通知。
/// </summary>
/// <param name="typeName"></param>
/// <param name="fieldName"></param>
/// <param name="val"></param>
private void FieldSetter(string typeName, string fieldName, object val)
{
//.maxstack 3
//.locals init (class System.Reflection.FieldInfo V_0)
//IL_0000: ldarg.0
//IL_0001: ldarg.1
//IL_0002: ldarg.2
//IL_0003: call instance class System.Reflection.FieldInfo System.Object::GetFieldInfo(string,
// string)
//IL_0008: stloc.0
//IL_0009: ldloc.0
//IL_000a: callvirt instance bool System.Reflection.FieldInfo::get_IsInitOnly()
//IL_000f: brfalse.s IL_0021
//IL_0011: ldstr "FieldAccess_InitOnly"
//IL_0016: call string System.Environment::GetResourceString(string)
//IL_001b: newobj instance void System.FieldAccessException::.ctor(string)
//IL_0020: throw
//IL_0021: ldarg.3
//IL_0022: ldloc.0
//IL_0023: callvirt instance class System.Type System.Reflection.FieldInfo::get_FieldType()
//IL_0028: call object System.Runtime.Remoting.Messaging.Message::CoerceArg(object,
// class System.Type)
//IL_002d: pop
//IL_002e: ldloc.0
//IL_002f: ldarg.0
//IL_0030: ldarg.3
//IL_0031: callvirt instance void System.Reflection.FieldInfo::SetValue(object,
// object)
//IL_0036: ret
FieldInfo V_0;
V_0 = this.GetFieldInfo(typeName, fieldName);
if (V_0.IsInitOnly)
{
throw new FieldAccessException(Environment.GetResourceString("FieldAccess_InitOnly"));
}
else
{
System.Runtime.Remoting.Messaging.Message.CoerceArg(val, V_0.FieldType);
V_0.SetValue(this, val);
}
}
/// <summary>
/// 利用GetFieldInfo找到相应字段，然后利用反射技术(FieldInfo.GetValue())返回字段值，并将它赋予val
/// </summary>
/// <param name="typeName"></param>
/// <param name="fieldName"></param>
/// <param name="val"></param>
private void FieldGetter(string typeName, string fieldName, ref object val)
{
//.maxstack 3
//.locals init (class System.Reflection.FieldInfo V_0)
//IL_0000: ldarg.0
//IL_0001: ldarg.1
//IL_0002: ldarg.2
//IL_0003: call instance class System.Reflection.FieldInfo System.Object::GetFieldInfo(string,
// string)
//IL_0008: stloc.0
//IL_0009: ldarg.3
//IL_000a: ldloc.0
//IL_000b: ldarg.0
//IL_000c: callvirt instance object System.Reflection.FieldInfo::GetValue(object)
//IL_0011: stind.ref
//IL_0012: ret
FieldInfo V_0;
V_0 = this.GetFieldInfo(typeName, fieldName);
val=V_0.GetValue(this);
}
/// <summary>
/// 利用反射技术(Type.GetField())从本对象中获取指定类型的指定属性，该指定类型应该是本对象的适配类型，否者将抛出错误。
/// 先获取本对象类型的FullName与指定typeName进行比对，然后逐层与父类型FullName比较，直到最终匹配或者父类型为Null为止；
/// 如果没有找到匹配类型则抛出错误。
/// </summary>
/// <param name="typeName">指定类型的FullName，本类型或者其父类型</param>
/// <param name="fieldName">指定的字段名称，它的修饰符是：BindingFlags.Public|BindingFlags.Instance|BindingFlags.IgnoreCase</param>
/// <returns></returns>
private System.Reflection.FieldInfo GetFieldInfo(string typeName, string fieldName)
{
//.maxstack 5
//.locals init (class System.Type V_0,
// class System.Reflection.FieldInfo V_1,
// object[] V_2,
// object[] V_3)
//IL_0000: ldarg.0
//IL_0001: call instance class System.Type System.Object::GetType()
//IL_0006: stloc.0
//IL_0007: br.s IL_001e
//IL_0009: ldloc.0
//IL_000a: callvirt instance string System.Type::get_FullName()
//IL_000f: ldarg.1
//IL_0010: callvirt instance bool System.String::Equals(string)
//IL_0015: brtrue.s IL_0021
//IL_0017: ldloc.0
//IL_0018: callvirt instance class System.Type System.Type::get_BaseType()
//IL_001d: stloc.0
//IL_001e: ldloc.0
//IL_001f: brtrue.s IL_0009
//IL_0021: ldloc.0
//IL_0022: brtrue.s IL_004a
//IL_0024: call class System.Globalization.CultureInfo System.Globalization.CultureInfo::get_CurrentCulture()
//IL_0029: ldstr "Remoting_BadType"
//IL_002e: call string System.Environment::GetResourceString(string)
//IL_0033: ldc.i4.1
//IL_0034: newarr System.Object
//IL_0039: stloc.2
//IL_003a: ldloc.2
//IL_003b: ldc.i4.0
//IL_003c: ldarg.1
//IL_003d: stelem.ref
//IL_003e: ldloc.2
//IL_003f: call string System.String::Format(class System.IFormatProvider,
// string,
// object[])
//IL_0044: newobj instance void System.Runtime.Remoting.RemotingException::.ctor(string)
//IL_0049: throw
//IL_004a: ldloc.0
//IL_004b: ldarg.2
//IL_004c: ldc.i4.s 21
//IL_004e: callvirt instance class System.Reflection.FieldInfo System.Type::GetField(string,
// valuetype System.Reflection.BindingFlags)
//IL_0053: stloc.1
//IL_0054: ldloc.1
//IL_0055: brtrue.s IL_0081
//IL_0057: call class System.Globalization.CultureInfo System.Globalization.CultureInfo::get_CurrentCulture()
//IL_005c: ldstr "Remoting_BadField"
//IL_0061: call string System.Environment::GetResourceString(string)
//IL_0066: ldc.i4.2
//IL_0067: newarr System.Object
//IL_006c: stloc.3
//IL_006d: ldloc.3
//IL_006e: ldc.i4.0
//IL_006f: ldarg.2
//IL_0070: stelem.ref
//IL_0071: ldloc.3
//IL_0072: ldc.i4.1
//IL_0073: ldarg.1
//IL_0074: stelem.ref
//IL_0075: ldloc.3
//IL_0076: call string System.String::Format(class System.IFormatProvider,
// string,
// object[])
//IL_007b: newobj instance void System.Runtime.Remoting.RemotingException::.ctor(string)
//IL_0080: throw
//IL_0081: ldloc.1
//IL_0082: ret
Type V_0;
FieldInfo V_1;
object[] V_2, V_3;
V_0 = this.GetType();
//IL0009
if (V_0.FullName.Equals(typeName))//真的话跳往IL_0021
{
//IL_0021
if (V_0 != null)//真的话跳往IL_004a
{
V_1=V_0.GetField(fieldName, BindingFlags.Public|BindingFlags.Instance|BindingFlags.IgnoreCase);
}
}
else
{
do
{
V_0 = V_0.BaseType;
}while (!V_0.FullName.Equals(typeName)&&(V_0!=null));
if (V_0 != null)//真的话跳往IL_004a
{
V_1 = V_0.GetField(fieldName, BindingFlags.Public | BindingFlags.Instance | BindingFlags.IgnoreCase);
}
else
{
V_2 = new object[1];
V_2[0] = typeName;
throw new RemotingException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Remoting_BadType"), V_2));
}
}
if (V_1 == null)//为假的时候跳往IL_0081
{
V_3=new object[2];
V_3[0]=fieldName;
V_3[1]=typeName;
throw new RemotingException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Remoting_BadField"), V_3));
}
else //IL_0081
{
return V_1;
}
}
}
}
