SqlByte.cs

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using System.Data.Common;
using System.Diagnostics.CodeAnalysis;
using System.Runtime.CompilerServices;
using System.Xml;
using System.Xml.Schema;
using System.Xml.Serialization;
 
namespace System.Data.SqlTypes;
 
[Serializable]
[XmlSchemaProvider("GetXsdType")]
[TypeForwardedFrom("System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
public struct SqlByte : INullable, IComparable, IXmlSerializable
{
    private bool m_fNotNull;
 
    private byte m_value;
 
    public static readonly SqlByte Null = new SqlByte(fNull: true);
 
    public static readonly SqlByte Zero = new SqlByte(0);
 
    public static readonly SqlByte MinValue = new SqlByte(0);
 
    public static readonly SqlByte MaxValue = new SqlByte(byte.MaxValue);
 
    public bool IsNull => !m_fNotNull;
 
    public byte Value
    {
        get
        {
            if (m_fNotNull)
            {
                return m_value;
            }
            throw new SqlNullValueException();
        }
    }
 
    private SqlByte(bool fNull)
    {
        m_fNotNull = false;
        m_value = 0;
    }
 
    public SqlByte(byte value)
    {
        m_value = value;
        m_fNotNull = true;
    }
 
    public static implicit operator SqlByte(byte x)
    {
        return new SqlByte(x);
    }
 
    public static explicit operator byte(SqlByte x)
    {
        return x.Value;
    }
 
    public override string ToString()
    {
        if (!IsNull)
        {
            return m_value.ToString((IFormatProvider?)null);
        }
        return SQLResource.NullString;
    }
 
    public static SqlByte Parse(string s)
    {
        if (s == SQLResource.NullString)
        {
            return Null;
        }
        return new SqlByte(byte.Parse(s, null));
    }
 
    public static SqlByte operator ~(SqlByte x)
    {
        if (!x.IsNull)
        {
            return new SqlByte((byte)(~x.m_value));
        }
        return Null;
    }
 
    public static SqlByte operator +(SqlByte x, SqlByte y)
    {
        if (x.IsNull || y.IsNull)
        {
            return Null;
        }
        int num = x.m_value + y.m_value;
        if (((uint)num & 0xFFFFFF00u) != 0)
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        return new SqlByte((byte)num);
    }
 
    public static SqlByte operator -(SqlByte x, SqlByte y)
    {
        if (x.IsNull || y.IsNull)
        {
            return Null;
        }
        int num = x.m_value - y.m_value;
        if (((uint)num & 0xFFFFFF00u) != 0)
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        return new SqlByte((byte)num);
    }
 
    public static SqlByte operator *(SqlByte x, SqlByte y)
    {
        if (x.IsNull || y.IsNull)
        {
            return Null;
        }
        int num = x.m_value * y.m_value;
        if (((uint)num & 0xFFFFFF00u) != 0)
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        return new SqlByte((byte)num);
    }
 
    public static SqlByte operator /(SqlByte x, SqlByte y)
    {
        if (x.IsNull || y.IsNull)
        {
            return Null;
        }
        if (y.m_value != 0)
        {
            return new SqlByte((byte)(x.m_value / y.m_value));
        }
        throw new DivideByZeroException(SQLResource.DivideByZeroMessage);
    }
 
    public static SqlByte operator %(SqlByte x, SqlByte y)
    {
        if (x.IsNull || y.IsNull)
        {
            return Null;
        }
        if (y.m_value != 0)
        {
            return new SqlByte((byte)(x.m_value % y.m_value));
        }
        throw new DivideByZeroException(SQLResource.DivideByZeroMessage);
    }
 
    public static SqlByte operator &(SqlByte x, SqlByte y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlByte((byte)(x.m_value & y.m_value));
        }
        return Null;
    }
 
    public static SqlByte operator |(SqlByte x, SqlByte y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlByte((byte)(x.m_value | y.m_value));
        }
        return Null;
    }
 
    public static SqlByte operator ^(SqlByte x, SqlByte y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlByte((byte)(x.m_value ^ y.m_value));
        }
        return Null;
    }
 
    public static explicit operator SqlByte(SqlBoolean x)
    {
        if (!x.IsNull)
        {
            return new SqlByte(x.ByteValue);
        }
        return Null;
    }
 
    public static explicit operator SqlByte(SqlMoney x)
    {
        if (!x.IsNull)
        {
            return new SqlByte(checked((byte)x.ToInt32()));
        }
        return Null;
    }
 
    public static explicit operator SqlByte(SqlInt16 x)
    {
        if (x.IsNull)
        {
            return Null;
        }
        if (x.Value > 255 || x.Value < 0)
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        if (!x.IsNull)
        {
            return new SqlByte((byte)x.Value);
        }
        return Null;
    }
 
    public static explicit operator SqlByte(SqlInt32 x)
    {
        if (x.IsNull)
        {
            return Null;
        }
        if (x.Value > 255 || x.Value < 0)
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        if (!x.IsNull)
        {
            return new SqlByte((byte)x.Value);
        }
        return Null;
    }
 
    public static explicit operator SqlByte(SqlInt64 x)
    {
        if (x.IsNull)
        {
            return Null;
        }
        if (x.Value > 255 || x.Value < 0)
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        if (!x.IsNull)
        {
            return new SqlByte((byte)x.Value);
        }
        return Null;
    }
 
    public static explicit operator SqlByte(SqlSingle x)
    {
        if (x.IsNull)
        {
            return Null;
        }
        if (x.Value > 255f || x.Value < 0f)
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        if (!x.IsNull)
        {
            return new SqlByte((byte)x.Value);
        }
        return Null;
    }
 
    public static explicit operator SqlByte(SqlDouble x)
    {
        if (x.IsNull)
        {
            return Null;
        }
        if (x.Value > 255.0 || x.Value < 0.0)
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        if (!x.IsNull)
        {
            return new SqlByte((byte)x.Value);
        }
        return Null;
    }
 
    public static explicit operator SqlByte(SqlDecimal x)
    {
        return (SqlByte)(SqlInt32)x;
    }
 
    public static explicit operator SqlByte(SqlString x)
    {
        if (!x.IsNull)
        {
            return new SqlByte(byte.Parse(x.Value, null));
        }
        return Null;
    }
 
    public static SqlBoolean operator ==(SqlByte x, SqlByte y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlBoolean(x.m_value == y.m_value);
        }
        return SqlBoolean.Null;
    }
 
    public static SqlBoolean operator !=(SqlByte x, SqlByte y)
    {
        return !(x == y);
    }
 
    public static SqlBoolean operator <(SqlByte x, SqlByte y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlBoolean(x.m_value < y.m_value);
        }
        return SqlBoolean.Null;
    }
 
    public static SqlBoolean operator >(SqlByte x, SqlByte y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlBoolean(x.m_value > y.m_value);
        }
        return SqlBoolean.Null;
    }
 
    public static SqlBoolean operator <=(SqlByte x, SqlByte y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlBoolean(x.m_value <= y.m_value);
        }
        return SqlBoolean.Null;
    }
 
    public static SqlBoolean operator >=(SqlByte x, SqlByte y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlBoolean(x.m_value >= y.m_value);
        }
        return SqlBoolean.Null;
    }
 
    public static SqlByte OnesComplement(SqlByte x)
    {
        return ~x;
    }
 
    public static SqlByte Add(SqlByte x, SqlByte y)
    {
        return x + y;
    }
 
    public static SqlByte Subtract(SqlByte x, SqlByte y)
    {
        return x - y;
    }
 
    public static SqlByte Multiply(SqlByte x, SqlByte y)
    {
        return x * y;
    }
 
    public static SqlByte Divide(SqlByte x, SqlByte y)
    {
        return x / y;
    }
 
    public static SqlByte Mod(SqlByte x, SqlByte y)
    {
        return x % y;
    }
 
    public static SqlByte Modulus(SqlByte x, SqlByte y)
    {
        return x % y;
    }
 
    public static SqlByte BitwiseAnd(SqlByte x, SqlByte y)
    {
        return x & y;
    }
 
    public static SqlByte BitwiseOr(SqlByte x, SqlByte y)
    {
        return x | y;
    }
 
    public static SqlByte Xor(SqlByte x, SqlByte y)
    {
        return x ^ y;
    }
 
    public static SqlBoolean Equals(SqlByte x, SqlByte y)
    {
        return x == y;
    }
 
    public static SqlBoolean NotEquals(SqlByte x, SqlByte y)
    {
        return x != y;
    }
 
    public static SqlBoolean LessThan(SqlByte x, SqlByte y)
    {
        return x < y;
    }
 
    public static SqlBoolean GreaterThan(SqlByte x, SqlByte y)
    {
        return x > y;
    }
 
    public static SqlBoolean LessThanOrEqual(SqlByte x, SqlByte y)
    {
        return x <= y;
    }
 
    public static SqlBoolean GreaterThanOrEqual(SqlByte x, SqlByte y)
    {
        return x >= y;
    }
 
    public SqlBoolean ToSqlBoolean()
    {
        return (SqlBoolean)this;
    }
 
    public SqlDouble ToSqlDouble()
    {
        return this;
    }
 
    public SqlInt16 ToSqlInt16()
    {
        return this;
    }
 
    public SqlInt32 ToSqlInt32()
    {
        return this;
    }
 
    public SqlInt64 ToSqlInt64()
    {
        return this;
    }
 
    public SqlMoney ToSqlMoney()
    {
        return this;
    }
 
    public SqlDecimal ToSqlDecimal()
    {
        return this;
    }
 
    public SqlSingle ToSqlSingle()
    {
        return this;
    }
 
    public SqlString ToSqlString()
    {
        return (SqlString)this;
    }
 
    public int CompareTo(object? value)
    {
        if (value is SqlByte value2)
        {
            return CompareTo(value2);
        }
        throw ADP.WrongType(value.GetType(), typeof(SqlByte));
    }
 
    public int CompareTo(SqlByte value)
    {
        if (IsNull)
        {
            if (!value.IsNull)
            {
                return -1;
            }
            return 0;
        }
        if (value.IsNull)
        {
            return 1;
        }
        if (this < value)
        {
            return -1;
        }
        if (this > value)
        {
            return 1;
        }
        return 0;
    }
 
    public override bool Equals([NotNullWhen(true)] object? value)
    {
        if (!(value is SqlByte sqlByte))
        {
            return false;
        }
        if (sqlByte.IsNull || IsNull)
        {
            if (sqlByte.IsNull)
            {
                return IsNull;
            }
            return false;
        }
        return (this == sqlByte).Value;
    }
 
    public override int GetHashCode()
    {
        if (!IsNull)
        {
            return Value.GetHashCode();
        }
        return 0;
    }
 
    XmlSchema IXmlSerializable.GetSchema()
    {
        return null;
    }
 
    void IXmlSerializable.ReadXml(XmlReader reader)
    {
        string attribute = reader.GetAttribute("nil", "http://www.w3.org/2001/XMLSchema-instance");
        if (attribute != null && XmlConvert.ToBoolean(attribute))
        {
            reader.ReadElementString();
            m_fNotNull = false;
        }
        else
        {
            m_value = XmlConvert.ToByte(reader.ReadElementString());
            m_fNotNull = true;
        }
    }
 
    void IXmlSerializable.WriteXml(XmlWriter writer)
    {
        if (IsNull)
        {
            writer.WriteAttributeString("xsi", "nil", "http://www.w3.org/2001/XMLSchema-instance", "true");
        }
        else
        {
            writer.WriteString(XmlConvert.ToString(m_value));
        }
    }
 
    public static XmlQualifiedName GetXsdType(XmlSchemaSet schemaSet)
    {
        return new XmlQualifiedName("unsignedByte", "http://www.w3.org/2001/XMLSchema");
    }
}