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// ==++==
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// ==--==
/*============================================================
**
** Class: IntPtr
**
**
** Purpose: Platform independent integer
**
**
===========================================================*/
namespace System {
using System;
using System.Globalization;
using System.Runtime;
using System.Runtime.Serialization;
using System.Runtime.CompilerServices;
using System.Runtime.ConstrainedExecution;
using System.Security;
using System.Diagnostics.Contracts;
[Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public struct IntPtr : ISerializable
{
[SecurityCritical]
unsafe private void* m_value; // The compiler treats void* closest to uint hence explicit casts are required to preserve int behavior
public static readonly IntPtr Zero;
// fast way to compare IntPtr to (IntPtr)0 while IntPtr.Zero doesn't work due to slow statics access
[System.Security.SecuritySafeCritical] // auto-generated
[Pure]
[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
internal unsafe bool IsNull()
{
return (this.m_value == null);
}
[System.Security.SecuritySafeCritical] // auto-generated
[ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
[System.Runtime.Versioning.NonVersionable]
public unsafe IntPtr(int value)
{
#if WIN32
m_value = (void *)value;
#else
m_value = (void *)(long)value;
#endif
}
[System.Security.SecuritySafeCritical] // auto-generated
[ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
[System.Runtime.Versioning.NonVersionable]
public unsafe IntPtr(long value)
{
#if WIN32
m_value = (void *)checked((int)value);
#else
m_value = (void *)value;
#endif
}
[System.Security.SecurityCritical]
[CLSCompliant(false)]
[ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
[System.Runtime.Versioning.NonVersionable]
public unsafe IntPtr(void* value)
{
m_value = value;
}
[System.Security.SecurityCritical] // auto-generated
private unsafe IntPtr(SerializationInfo info, StreamingContext context) {
long l = info.GetInt64("value");
if (Size==4 && (l>Int32.MaxValue || l<Int32.MinValue)) {
throw new ArgumentException(Environment.GetResourceString("Serialization_InvalidPtrValue"));
}
m_value = (void *)l;
}
#if FEATURE_SERIALIZATION
[System.Security.SecurityCritical]
unsafe void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context) {
if (info==null) {
throw new ArgumentNullException("info");
}
Contract.EndContractBlock();
#if WIN32
info.AddValue("value", (long)((int)m_value));
#else
info.AddValue("value", (long)(m_value));
#endif
}
#endif
[System.Security.SecuritySafeCritical] // auto-generated
public unsafe override bool Equals(Object obj) {
if (obj is IntPtr) {
return (m_value == ((IntPtr)obj).m_value);
}
return false;
}
[System.Security.SecuritySafeCritical] // auto-generated
public unsafe override int GetHashCode() {
return unchecked((int)((long)m_value));
}
[System.Security.SecuritySafeCritical] // auto-generated
[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
[System.Runtime.Versioning.NonVersionable]
public unsafe int ToInt32() {
#if WIN32
return (int)m_value;
#else
long l = (long)m_value;
return checked((int)l);
#endif
}
[System.Security.SecuritySafeCritical] // auto-generated
[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
[System.Runtime.Versioning.NonVersionable]
public unsafe long ToInt64() {
#if WIN32
return (long)(int)m_value;
#else
return (long)m_value;
#endif
}
[System.Security.SecuritySafeCritical] // auto-generated
public unsafe override String ToString() {
#if WIN32
return ((int)m_value).ToString(CultureInfo.InvariantCulture);
#else
return ((long)m_value).ToString(CultureInfo.InvariantCulture);
#endif
}
[System.Security.SecuritySafeCritical] // auto-generated
public unsafe String ToString(String format)
{
Contract.Ensures(Contract.Result<String>() != null);
#if WIN32
return ((int)m_value).ToString(format, CultureInfo.InvariantCulture);
#else
return ((long)m_value).ToString(format, CultureInfo.InvariantCulture);
#endif
}
[ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
[System.Runtime.Versioning.NonVersionable]
public static explicit operator IntPtr (int value)
{
return new IntPtr(value);
}
[ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
[System.Runtime.Versioning.NonVersionable]
public static explicit operator IntPtr (long value)
{
return new IntPtr(value);
}
[System.Security.SecurityCritical]
[CLSCompliant(false), ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
[System.Runtime.Versioning.NonVersionable]
public static unsafe explicit operator IntPtr (void* value)
{
return new IntPtr(value);
}
[System.Security.SecuritySafeCritical] // auto-generated
[CLSCompliant(false)]
[System.Runtime.Versioning.NonVersionable]
public static unsafe explicit operator void* (IntPtr value)
{
return value.m_value;
}
[System.Security.SecuritySafeCritical] // auto-generated
[System.Runtime.Versioning.NonVersionable]
public unsafe static explicit operator int (IntPtr value)
{
#if WIN32
return (int)value.m_value;
#else
long l = (long)value.m_value;
return checked((int)l);
#endif
}
[System.Security.SecuritySafeCritical] // auto-generated
[System.Runtime.Versioning.NonVersionable]
public unsafe static explicit operator long (IntPtr value)
{
#if WIN32
return (long)(int)value.m_value;
#else
return (long)value.m_value;
#endif
}
[System.Security.SecuritySafeCritical] // auto-generated
[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
[System.Runtime.Versioning.NonVersionable]
public unsafe static bool operator == (IntPtr value1, IntPtr value2)
{
return value1.m_value == value2.m_value;
}
[System.Security.SecuritySafeCritical] // auto-generated
[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
[System.Runtime.Versioning.NonVersionable]
public unsafe static bool operator != (IntPtr value1, IntPtr value2)
{
return value1.m_value != value2.m_value;
}
[ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
[System.Runtime.Versioning.NonVersionable]
public static IntPtr Add(IntPtr pointer, int offset)
{
return pointer + offset;
}
[ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
[System.Runtime.Versioning.NonVersionable]
public static IntPtr operator +(IntPtr pointer, int offset)
{
#if WIN32
return new IntPtr(pointer.ToInt32() + offset);
#else
return new IntPtr(pointer.ToInt64() + offset);
#endif
}
[ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
[System.Runtime.Versioning.NonVersionable]
public static IntPtr Subtract(IntPtr pointer, int offset) {
return pointer - offset;
}
[ReliabilityContract(Consistency.MayCorruptInstance, Cer.MayFail)]
[System.Runtime.Versioning.NonVersionable]
public static IntPtr operator -(IntPtr pointer, int offset) {
#if WIN32
return new IntPtr(pointer.ToInt32() - offset);
#else
return new IntPtr(pointer.ToInt64() - offset);
#endif
}
public static int Size
{
[Pure]
[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
[System.Runtime.Versioning.NonVersionable]
get
{
#if WIN32
return 4;
#else
return 8;
#endif
}
}
[System.Security.SecuritySafeCritical] // auto-generated
[CLSCompliant(false)]
[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
[System.Runtime.Versioning.NonVersionable]
public unsafe void* ToPointer()
{
return m_value;
}
}
}
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