System.UIntPtr

最新推荐文章于 2025-08-24 16:09:17 发布

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最新推荐文章于 2025-08-24 16:09:17 发布

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CC 4.0 BY-SA版权

文章标签： runtime

原文链接：http://www.cnblogs.com/MSIL/articles/1811416.html

本文详细介绍了.NET Framework中UIntPtr结构的定义与实现细节，包括构造方法、显式类型转换操作符、成员方法等，并提供了该结构的源码解析。

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using System.Globalization;

using System.Runtime.InteropServices;

namespace System

{

[StructLayout(LayoutKind.Sequential,CharSet=CharSet.Ansi),Serializable,CLSCompliant(false),ComVisible(true)]

public struct UIntPtr:System.Runtime.Serialization.ISerializable

{

private void* m_value;

public static readonly System.UIntPtr Zero;

public UIntPtr(uint @value)

{

//.maxstack 8

//IL_0000: ldarg.0

//IL_0001: ldarg.1

//IL_0002: conv.u

//IL_0003: stfld void* System.UIntPtr::m_value

//IL_0008: ret

return this.m_value=(void*)@value;

}

public UIntPtr(ulong @value)

{

//.maxstack 8

//IL_0000: ldarg.0

//IL_0001: ldarg.1

//IL_0002: conv.ovf.u4.un

//IL_0003: conv.u

//IL_0004: stfld void* System.UIntPtr::m_value

//IL_0009: ret

return this.m_value = (void*)checked((uint)@value);

}

public UIntPtr(void* @value)

{

//System.CLSCompliantAttribute(false)

//.maxstack 8

//IL_0000: ldarg.0

//IL_0001: ldarg.1

//IL_0002: stfld void* System.UIntPtr::m_value

//IL_0007: ret

return this.m_value = @value;

}

private UIntPtr( System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context)

{

//.maxstack 2

//.locals init (uint64 V_0)

//IL_0000: ldarg.1

//IL_0001: ldstr "value"

//IL_0006: callvirt instance uint64 System.Runtime.Serialization.SerializationInfo::GetUInt64(string)

//IL_000b: stloc.0

//IL_000c: call int32 System.UIntPtr::get_Size()

//IL_0011: ldc.i4.4

//IL_0012: bne.un.s IL_0029

//IL_0014: ldloc.0

//IL_0015: ldc.i4.m1

//IL_0016: conv.u8

//IL_0017: ble.un.s IL_0029

//IL_0019: ldstr "Serialization_InvalidPtrValue"

//IL_001e: call string System.Environment::GetResourceString(string)

//IL_0023: newobj instance void System.ArgumentException::.ctor(string)

//IL_0028: throw

//IL_0029: ldarg.0

//IL_002a: ldloc.0

//IL_002b: conv.u

//IL_002c: stfld void* System.UIntPtr::m_value

//IL_0031: ret

ulong V_0;

V_0 = info.GetUInt16("value");

if(System.UIntPtr.Size==4)

{

if (V_0 <= 0xFFFFFFFFuL)

{

this.m_value = (void*)V_0;

}

else

{

throw new System.ArgumentException(System.Environment.GetResourceString("Serialization_InvalidPtrValue"));

}

else

{

this.m_value = (void*)V_0;

}

new virtual sealed void System.Runtime.Serialization.ISerializable.GetObjectData( System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context)

{

//.override System.Runtime.Serialization.ISerializable::GetObjectData

//.maxstack 8

//IL_0000: ldarg.1

//IL_0001: brtrue.s IL_000e

//IL_0003: ldstr "info"

//IL_0008: newobj instance void System.ArgumentNullException::.ctor(string)

//IL_000d: throw

//IL_000e: ldarg.1

//IL_000f: ldstr "value"

//IL_0014: ldarg.0

//IL_0015: ldfld void* System.UIntPtr::m_value

//IL_001a: conv.u8

//IL_001b: callvirt instance void System.Runtime.Serialization.SerializationInfo::AddValue(string,

//uint64)

//IL_0020: ret

if (info == null)

{

throw new System.ArgumentNullException("info");

}

else

{

info.AddValue("value",(ulong)this.m_value);

}

public override bool Equals(object obj)

{

//.maxstack 2

//.locals init (native uint V_0)

//IL_0000: ldarg.1

//IL_0001: isinst System.UIntPtr

//IL_0006: brfalse.s IL_001f

//IL_0008: ldarg.0

//IL_0009: ldfld void* System.UIntPtr::m_value

//IL_000e: ldarg.1

//IL_000f: unbox.any System.UIntPtr

//IL_0014: stloc.0

//IL_0015: ldloca.s V_0

//IL_0017: ldfld void* System.UIntPtr::m_value

//IL_001c: ceq

//IL_001e: ret

//IL_001f: ldc.i4.0

//IL_0020: ret

System.UIntPtr V_0;

if (obj is System.UIntPtr)

{

V_0=(System.UIntPtr)obj;

return this.m_value == V_0.m_value;

}

else

{

return false;

}

public override int GetHashCode()

{

//.maxstack 8

//IL_0000: ldarg.0

//IL_0001: ldfld void* System.UIntPtr::m_value

//IL_0006: conv.u8

//IL_0007: conv.i4

//IL_0008: ldc.i4 0x7fffffff

//IL_000d: and

//IL_000e: ret

return (int)(ulong)this.m_value & 0x7ffffff;

}

public uint ToUInt32()

{

//.maxstack 8

//IL_0000: ldarg.0

//IL_0001: ldfld void* System.UIntPtr::m_value

//IL_0006: conv.u4

//IL_0007: ret

return (uint)this.m_value;

}

public ulong ToUInt64()

{

//.maxstack 8

//IL_0000: ldarg.0

//IL_0001: ldfld void* System.UIntPtr::m_value

//IL_0006: conv.u8

//IL_0007: ret

return (ulong)this.m_value;

}

public virtual string ToString()

{

//.maxstack 2

//.locals init (uint32 V_0)

//IL_0000: ldarg.0

//IL_0001: ldfld void* System.UIntPtr::m_value

//IL_0006: conv.u4

//IL_0007: stloc.0

//IL_0008: ldloca.s V_0

//IL_000a: call class System.Globalization.CultureInfo System.Globalization.CultureInfo::get_InvariantCulture()

//IL_000f: call instance string System.UInt32::ToString(class System.IFormatProvider)

//IL_0014: ret

uint V_0 = (uint)this.m_value;

return V_0.ToString(CultureInfo.InvariantCulture);

}

public static System.UIntPtr op_Explicit(uint @value)

{

//.maxstack 8

//IL_0000: ldarg.0

//IL_0001: newobj instance void System.UIntPtr::.ctor(uint32)

//IL_0006: ret

return new UIntPtr(@value);

}

public static System.UIntPtr op_Explicit(ulong @value)

{

//.maxstack 8

//IL_0000: ldarg.0

//IL_0001: newobj instance void System.UIntPtr::.ctor(uint64)

//IL_0006: ret

return new UIntPtr(@value);

}

public static uint op_Explicit(System.UIntPtr @value)

{

//.maxstack 8

//IL_0000: ldarga.s 'value'

//IL_0002: ldfld void* System.UIntPtr::m_value

//IL_0007: conv.u4

//IL_0008: ret

return (uint)@value.m_value;

}

public static ulong op_Explicit(System.UIntPtr @value)

{

//.maxstack 8

//IL_0000: ldarga.s 'value'

//IL_0002: ldfld void* System.UIntPtr::m_value

//IL_0007: conv.u8

//IL_0008: ret

return (ulong)@value.m_value;

}

[CLSCompliant(false)]

public static System.UIntPtr op_Explicit(void* @value)

{

//.maxstack 8

//IL_0000: ldarg.0

//IL_0001: newobj instance void System.UIntPtr::.ctor(void*)

//IL_0006: ret

return new UIntPtr(@value);

}

[CLSCompliant(false)]

public static void* op_Explicit(System.UIntPtr @value)

{

//.maxstack 8

//IL_0000: ldarga.s 'value'

//IL_0002: call instance void* System.UIntPtr::ToPointer()

//IL_0007: ret

return @value.ToPointer();

}

public static bool op_Equality(System.UIntPtr value1, System.UIntPtr value2)

{

//.maxstack 8

//IL_0000: ldarga.s value1

//IL_0002: ldfld void* System.UIntPtr::m_value

//IL_0007: ldarga.s value2

//IL_0009: ldfld void* System.UIntPtr::m_value

//IL_000e: ceq

//IL_0010: ret

return value1.m_value == value2.m_value;

}

public static bool op_Inequality(System.UIntPtr value1, System.UIntPtr value2)

{

//.maxstack 8

//IL_0000: ldarga.s value1

//IL_0002: ldfld void* System.UIntPtr::m_value

//IL_0007: ldarga.s value2

//IL_0009: ldfld void* System.UIntPtr::m_value

//IL_000e: ceq

//IL_0010: ldc.i4.0

//IL_0011: ceq

//IL_0013: ret

return (value1.m_value == value2.m_value)==false;

}

public static int Size

{

get

{

;

}

//.get int32 System.UIntPtr::get_Size()

}

public static int get_Size()

{

//.maxstack 8

//IL_0000: ldc.i4.4

//IL_0001: ret

return 4;

}

public void* ToPointer()

{

//System.CLSCompliantAttribute(false)

//.maxstack 8

//IL_0000: ldarg.0

//IL_0001: ldfld void* System.UIntPtr::m_value

//IL_0006: ret

return this.m_value;

}

转载于:https://www.cnblogs.com/MSIL/articles/1811416.html