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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.
using System.Globalization;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Versioning;
namespace System
{
[Serializable]
[StructLayout(LayoutKind.Sequential)]
[TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
public struct Byte : IComparable, IConvertible, IFormattable, IComparable<Byte>, IEquatable<Byte>, ISpanFormattable
{
private byte m_value; // Do not rename (binary serialization)
// The maximum value that a Byte may represent: 255.
public const byte MaxValue = (byte)0xFF;
// The minimum value that a Byte may represent: 0.
public const byte MinValue = 0;
// 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 byte, this method throws an ArgumentException.
//
public int CompareTo(Object value)
{
if (value == null)
{
return 1;
}
if (!(value is Byte))
{
throw new ArgumentException(SR.Arg_MustBeByte);
}
return m_value - (((Byte)value).m_value);
}
public int CompareTo(Byte value)
{
return m_value - value;
}
// Determines whether two Byte objects are equal.
public override bool Equals(Object obj)
{
if (!(obj is Byte))
{
return false;
}
return m_value == ((Byte)obj).m_value;
}
[NonVersionable]
public bool Equals(Byte obj)
{
return m_value == obj;
}
// Gets a hash code for this instance.
public override int GetHashCode()
{
return m_value;
}
public static byte Parse(String s)
{
if (s == null) ThrowHelper.ThrowArgumentNullException(ExceptionArgument.s);
return Parse((ReadOnlySpan<char>)s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo);
}
public static byte Parse(String s, NumberStyles style)
{
NumberFormatInfo.ValidateParseStyleInteger(style);
if (s == null) ThrowHelper.ThrowArgumentNullException(ExceptionArgument.s);
return Parse((ReadOnlySpan<char>)s, style, NumberFormatInfo.CurrentInfo);
}
public static byte Parse(String s, IFormatProvider provider)
{
if (s == null) ThrowHelper.ThrowArgumentNullException(ExceptionArgument.s);
return Parse((ReadOnlySpan<char>)s, NumberStyles.Integer, NumberFormatInfo.GetInstance(provider));
}
// Parses an unsigned byte from a String in the given style. If
// a NumberFormatInfo isn't specified, the current culture's
// NumberFormatInfo is assumed.
public static byte Parse(String s, NumberStyles style, IFormatProvider provider)
{
NumberFormatInfo.ValidateParseStyleInteger(style);
if (s == null) ThrowHelper.ThrowArgumentNullException(ExceptionArgument.s);
return Parse((ReadOnlySpan<char>)s, style, NumberFormatInfo.GetInstance(provider));
}
public static byte Parse(ReadOnlySpan<char> s, NumberStyles style = NumberStyles.Integer, IFormatProvider provider = null)
{
NumberFormatInfo.ValidateParseStyleInteger(style);
return Parse(s, style, NumberFormatInfo.GetInstance(provider));
}
private static byte Parse(ReadOnlySpan<char> s, NumberStyles style, NumberFormatInfo info)
{
int i = 0;
try
{
i = Number.ParseInt32(s, style, info);
}
catch (OverflowException e)
{
throw new OverflowException(SR.Overflow_Byte, e);
}
if (i < MinValue || i > MaxValue) throw new OverflowException(SR.Overflow_Byte);
return (byte)i;
}
public static bool TryParse(String s, out Byte result)
{
if (s == null)
{
result = 0;
return false;
}
return TryParse((ReadOnlySpan<char>)s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, out result);
}
public static bool TryParse(ReadOnlySpan<char> s, out byte result)
{
return TryParse(s, NumberStyles.Integer, NumberFormatInfo.CurrentInfo, out result);
}
public static bool TryParse(String s, NumberStyles style, IFormatProvider provider, out Byte result)
{
NumberFormatInfo.ValidateParseStyleInteger(style);
if (s == null)
{
result = 0;
return false;
}
return TryParse((ReadOnlySpan<char>)s, style, NumberFormatInfo.GetInstance(provider), out result);
}
public static bool TryParse(ReadOnlySpan<char> s, NumberStyles style, IFormatProvider provider, out byte result)
{
NumberFormatInfo.ValidateParseStyleInteger(style);
return TryParse(s, style, NumberFormatInfo.GetInstance(provider), out result);
}
private static bool TryParse(ReadOnlySpan<char> s, NumberStyles style, NumberFormatInfo info, out Byte result)
{
result = 0;
int i;
if (!Number.TryParseInt32(s, style, info, out i))
{
return false;
}
if (i < MinValue || i > MaxValue)
{
return false;
}
result = (byte)i;
return true;
}
public override String ToString()
{
return Number.FormatInt32(m_value, null, NumberFormatInfo.CurrentInfo);
}
public String ToString(String format)
{
return Number.FormatInt32(m_value, format, NumberFormatInfo.CurrentInfo);
}
public String ToString(IFormatProvider provider)
{
return Number.FormatInt32(m_value, null, NumberFormatInfo.GetInstance(provider));
}
public String ToString(String format, IFormatProvider provider)
{
return Number.FormatInt32(m_value, format, NumberFormatInfo.GetInstance(provider));
}
// TODO https://github.com/dotnet/corefx/issues/25337: Remove this overload once corefx is updated to target the new signatures
public bool TryFormat(Span<char> destination, out int charsWritten, string format, IFormatProvider provider) =>
TryFormat(destination, out charsWritten, (ReadOnlySpan<char>)format, provider);
public bool TryFormat(Span<char> destination, out int charsWritten, ReadOnlySpan<char> format = default, IFormatProvider provider = null)
{
return Number.TryFormatInt32(m_value, format, NumberFormatInfo.GetInstance(provider), destination, out charsWritten);
}
//
// IConvertible implementation
//
public TypeCode GetTypeCode()
{
return TypeCode.Byte;
}
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 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 Convert.ToInt32(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, "Byte", "DateTime"));
}
Object IConvertible.ToType(Type type, IFormatProvider provider)
{
return Convert.DefaultToType((IConvertible)this, type, provider);
}
}
}
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