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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*============================================================
**
**
**
** Purpose: A representation of a 32 bit 2's complement
** integer.
**
**
===========================================================*/
using System;
using System.Globalization;
using System.Runtime;
using System.Runtime.InteropServices;
using System.Diagnostics.Contracts;
namespace System
{
[Serializable]
[System.Runtime.InteropServices.StructLayout(LayoutKind.Sequential)]
public struct Int32 : IComparable, IFormattable, IConvertible
, IComparable<Int32>, IEquatable<Int32>
{
private int m_value; // Do not rename (binary serialization)
public const int MaxValue = 0x7fffffff;
public const int MinValue = unchecked((int)0x80000000);
// Compares this object to another object, returning an integer that
// indicates the relationship.
// Returns a value less than zero if this object
// null is considered to be less than any instance.
// If object is not of type Int32, this method throws an ArgumentException.
//
public int CompareTo(Object value)
{
if (value == null)
{
return 1;
}
if (value is Int32)
{
// Need to use compare because subtraction will wrap
// to positive for very large neg numbers, etc.
int i = (int)value;
if (m_value < i) return -1;
if (m_value > i) return 1;
return 0;
}
throw new ArgumentException(SR.Arg_MustBeInt32);
}
public int CompareTo(int value)
{
// Need to use compare because subtraction will wrap
// to positive for very large neg numbers, etc.
if (m_value < value) return -1;
if (m_value > value) return 1;
return 0;
}
public override bool Equals(Object obj)
{
if (!(obj is Int32))
{
return false;
}
return m_value == ((Int32)obj).m_value;
}
[System.Runtime.Versioning.NonVersionable]
public bool Equals(Int32 obj)
{
return m_value == obj;
}
// The absolute value of the int contained.
public override int GetHashCode()
{
return m_value;
}
[Pure]
public override String ToString()
{
Contract.Ensures(Contract.Result<String>() != null);
return Number.FormatInt32(m_value, null, NumberFormatInfo.CurrentInfo);
}
[Pure]
public String ToString(String format)
{
Contract.Ensures(Contract.Result<String>() != null);
return Number.FormatInt32(m_value, format, NumberFormatInfo.CurrentInfo);
}
[Pure]
public String ToString(IFormatProvider provider)
{
Contract.Ensures(Contract.Result<String>() != null);
return Number.FormatInt32(m_value, null, NumberFormatInfo.GetInstance(provider));
}
[Pure]
public String ToString(String format, IFormatProvider provider)
{
Contract.Ensures(Contract.Result<String>() != null);
return Number.FormatInt32(m_value, format, NumberFormatInfo.GetInstance(provider));
}
[Pure]
public static int Parse(String s)
{
return Number.ParseInt32(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo);
}
[Pure]
public static int Parse(String s, NumberStyles style)
{
NumberFormatInfo.ValidateParseStyleInteger(style);
return Number.ParseInt32(s, style, NumberFormatInfo.CurrentInfo);
}
// Parses an integer from a String in the given style. If
// a NumberFormatInfo isn't specified, the current culture's
// NumberFormatInfo is assumed.
//
[Pure]
public static int Parse(String s, IFormatProvider provider)
{
return Number.ParseInt32(s, NumberStyles.Integer, NumberFormatInfo.GetInstance(provider));
}
// Parses an integer from a String in the given style. If
// a NumberFormatInfo isn't specified, the current culture's
// NumberFormatInfo is assumed.
//
[Pure]
public static int Parse(String s, NumberStyles style, IFormatProvider provider)
{
NumberFormatInfo.ValidateParseStyleInteger(style);
return Number.ParseInt32(s, style, NumberFormatInfo.GetInstance(provider));
}
// Parses an integer from a String. Returns false rather
// than throwing exceptin if input is invalid
//
[Pure]
public static bool TryParse(String s, out Int32 result)
{
return Number.TryParseInt32(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, out result);
}
// Parses an integer from a String in the given style. Returns false rather
// than throwing exceptin if input is invalid
//
[Pure]
public static bool TryParse(String s, NumberStyles style, IFormatProvider provider, out Int32 result)
{
NumberFormatInfo.ValidateParseStyleInteger(style);
return Number.TryParseInt32(s, style, NumberFormatInfo.GetInstance(provider), out result);
}
//
// IConvertible implementation
//
[Pure]
public TypeCode GetTypeCode()
{
return TypeCode.Int32;
}
bool IConvertible.ToBoolean(IFormatProvider provider)
{
return Convert.ToBoolean(m_value);
}
char IConvertible.ToChar(IFormatProvider provider)
{
return Convert.ToChar(m_value);
}
sbyte IConvertible.ToSByte(IFormatProvider provider)
{
return Convert.ToSByte(m_value);
}
byte IConvertible.ToByte(IFormatProvider provider)
{
return Convert.ToByte(m_value);
}
short IConvertible.ToInt16(IFormatProvider provider)
{
return Convert.ToInt16(m_value);
}
ushort IConvertible.ToUInt16(IFormatProvider provider)
{
return Convert.ToUInt16(m_value);
}
int IConvertible.ToInt32(IFormatProvider provider)
{
return m_value;
}
uint IConvertible.ToUInt32(IFormatProvider provider)
{
return Convert.ToUInt32(m_value);
}
long IConvertible.ToInt64(IFormatProvider provider)
{
return Convert.ToInt64(m_value);
}
ulong IConvertible.ToUInt64(IFormatProvider provider)
{
return Convert.ToUInt64(m_value);
}
float IConvertible.ToSingle(IFormatProvider provider)
{
return Convert.ToSingle(m_value);
}
double IConvertible.ToDouble(IFormatProvider provider)
{
return Convert.ToDouble(m_value);
}
Decimal IConvertible.ToDecimal(IFormatProvider provider)
{
return Convert.ToDecimal(m_value);
}
DateTime IConvertible.ToDateTime(IFormatProvider provider)
{
throw new InvalidCastException(SR.Format(SR.InvalidCast_FromTo, "Int32", "DateTime"));
}
Object IConvertible.ToType(Type type, IFormatProvider provider)
{
return Convert.DefaultToType((IConvertible)this, type, provider);
}
}
}
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