SqlSingle.cs

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using System.Data.Common;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Xml;
using System.Xml.Schema;
using System.Xml.Serialization;
 
namespace System.Data.SqlTypes;
 
[XmlSchemaProvider("GetXsdType")]
public struct SqlSingle : INullable, IComparable, IXmlSerializable
{
    private bool _fNotNull;
 
    private float _value;
 
    public static readonly SqlSingle Null = new SqlSingle(fNull: true);
 
    public static readonly SqlSingle Zero = new SqlSingle(0f);
 
    public static readonly SqlSingle MinValue = new SqlSingle(float.MinValue);
 
    public static readonly SqlSingle MaxValue = new SqlSingle(float.MaxValue);
 
    public bool IsNull => !_fNotNull;
 
    public float Value
    {
        get
        {
            if (_fNotNull)
            {
                return _value;
            }
            throw new SqlNullValueException();
        }
    }
 
    private SqlSingle(bool fNull)
    {
        _fNotNull = false;
        _value = 0f;
    }
 
    public SqlSingle(float value)
    {
        if (!float.IsFinite(value))
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        _fNotNull = true;
        _value = value;
    }
 
    public SqlSingle(double value)
        : this((float)value)
    {
    }
 
    public static implicit operator SqlSingle(float x)
    {
        return new SqlSingle(x);
    }
 
    public static explicit operator float(SqlSingle x)
    {
        return x.Value;
    }
 
    public override string ToString()
    {
        if (!IsNull)
        {
            return _value.ToString((IFormatProvider?)null);
        }
        return SQLResource.NullString;
    }
 
    public static SqlSingle Parse(string s)
    {
        if (s == SQLResource.NullString)
        {
            return Null;
        }
        return new SqlSingle(float.Parse(s, CultureInfo.InvariantCulture));
    }
 
    public static SqlSingle operator -(SqlSingle x)
    {
        if (!x.IsNull)
        {
            return new SqlSingle(0f - x._value);
        }
        return Null;
    }
 
    public static SqlSingle operator +(SqlSingle x, SqlSingle y)
    {
        if (x.IsNull || y.IsNull)
        {
            return Null;
        }
        float num = x._value + y._value;
        if (float.IsInfinity(num))
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        return new SqlSingle(num);
    }
 
    public static SqlSingle operator -(SqlSingle x, SqlSingle y)
    {
        if (x.IsNull || y.IsNull)
        {
            return Null;
        }
        float num = x._value - y._value;
        if (float.IsInfinity(num))
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        return new SqlSingle(num);
    }
 
    public static SqlSingle operator *(SqlSingle x, SqlSingle y)
    {
        if (x.IsNull || y.IsNull)
        {
            return Null;
        }
        float num = x._value * y._value;
        if (float.IsInfinity(num))
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        return new SqlSingle(num);
    }
 
    public static SqlSingle operator /(SqlSingle x, SqlSingle y)
    {
        if (x.IsNull || y.IsNull)
        {
            return Null;
        }
        if (y._value == 0f)
        {
            throw new DivideByZeroException(SQLResource.DivideByZeroMessage);
        }
        float num = x._value / y._value;
        if (float.IsInfinity(num))
        {
            throw new OverflowException(SQLResource.ArithOverflowMessage);
        }
        return new SqlSingle(num);
    }
 
    public static explicit operator SqlSingle(SqlBoolean x)
    {
        if (!x.IsNull)
        {
            return new SqlSingle((int)x.ByteValue);
        }
        return Null;
    }
 
    public static implicit operator SqlSingle(SqlByte x)
    {
        if (!x.IsNull)
        {
            return new SqlSingle((int)x.Value);
        }
        return Null;
    }
 
    public static implicit operator SqlSingle(SqlInt16 x)
    {
        if (!x.IsNull)
        {
            return new SqlSingle(x.Value);
        }
        return Null;
    }
 
    public static implicit operator SqlSingle(SqlInt32 x)
    {
        if (!x.IsNull)
        {
            return new SqlSingle(x.Value);
        }
        return Null;
    }
 
    public static implicit operator SqlSingle(SqlInt64 x)
    {
        if (!x.IsNull)
        {
            return new SqlSingle(x.Value);
        }
        return Null;
    }
 
    public static implicit operator SqlSingle(SqlMoney x)
    {
        if (!x.IsNull)
        {
            return new SqlSingle(x.ToDouble());
        }
        return Null;
    }
 
    public static implicit operator SqlSingle(SqlDecimal x)
    {
        if (!x.IsNull)
        {
            return new SqlSingle(x.ToDouble());
        }
        return Null;
    }
 
    public static explicit operator SqlSingle(SqlDouble x)
    {
        if (!x.IsNull)
        {
            return new SqlSingle(x.Value);
        }
        return Null;
    }
 
    public static explicit operator SqlSingle(SqlString x)
    {
        if (x.IsNull)
        {
            return Null;
        }
        return Parse(x.Value);
    }
 
    public static SqlBoolean operator ==(SqlSingle x, SqlSingle y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlBoolean(x._value == y._value);
        }
        return SqlBoolean.Null;
    }
 
    public static SqlBoolean operator !=(SqlSingle x, SqlSingle y)
    {
        return !(x == y);
    }
 
    public static SqlBoolean operator <(SqlSingle x, SqlSingle y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlBoolean(x._value < y._value);
        }
        return SqlBoolean.Null;
    }
 
    public static SqlBoolean operator >(SqlSingle x, SqlSingle y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlBoolean(x._value > y._value);
        }
        return SqlBoolean.Null;
    }
 
    public static SqlBoolean operator <=(SqlSingle x, SqlSingle y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlBoolean(x._value <= y._value);
        }
        return SqlBoolean.Null;
    }
 
    public static SqlBoolean operator >=(SqlSingle x, SqlSingle y)
    {
        if (!x.IsNull && !y.IsNull)
        {
            return new SqlBoolean(x._value >= y._value);
        }
        return SqlBoolean.Null;
    }
 
    public static SqlSingle Add(SqlSingle x, SqlSingle y)
    {
        return x + y;
    }
 
    public static SqlSingle Subtract(SqlSingle x, SqlSingle y)
    {
        return x - y;
    }
 
    public static SqlSingle Multiply(SqlSingle x, SqlSingle y)
    {
        return x * y;
    }
 
    public static SqlSingle Divide(SqlSingle x, SqlSingle y)
    {
        return x / y;
    }
 
    public static SqlBoolean Equals(SqlSingle x, SqlSingle y)
    {
        return x == y;
    }
 
    public static SqlBoolean NotEquals(SqlSingle x, SqlSingle y)
    {
        return x != y;
    }
 
    public static SqlBoolean LessThan(SqlSingle x, SqlSingle y)
    {
        return x < y;
    }
 
    public static SqlBoolean GreaterThan(SqlSingle x, SqlSingle y)
    {
        return x > y;
    }
 
    public static SqlBoolean LessThanOrEqual(SqlSingle x, SqlSingle y)
    {
        return x <= y;
    }
 
    public static SqlBoolean GreaterThanOrEqual(SqlSingle x, SqlSingle y)
    {
        return x >= y;
    }
 
    public SqlBoolean ToSqlBoolean()
    {
        return (SqlBoolean)this;
    }
 
    public SqlByte ToSqlByte()
    {
        return (SqlByte)this;
    }
 
    public SqlDouble ToSqlDouble()
    {
        return this;
    }
 
    public SqlInt16 ToSqlInt16()
    {
        return (SqlInt16)this;
    }
 
    public SqlInt32 ToSqlInt32()
    {
        return (SqlInt32)this;
    }
 
    public SqlInt64 ToSqlInt64()
    {
        return (SqlInt64)this;
    }
 
    public SqlMoney ToSqlMoney()
    {
        return (SqlMoney)this;
    }
 
    public SqlDecimal ToSqlDecimal()
    {
        return (SqlDecimal)this;
    }
 
    public SqlString ToSqlString()
    {
        return (SqlString)this;
    }
 
    public int CompareTo(object? value)
    {
        if (value is SqlSingle value2)
        {
            return CompareTo(value2);
        }
        throw ADP.WrongType(value.GetType(), typeof(SqlSingle));
    }
 
    public int CompareTo(SqlSingle 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 SqlSingle sqlSingle))
        {
            return false;
        }
        if (sqlSingle.IsNull || IsNull)
        {
            if (sqlSingle.IsNull)
            {
                return IsNull;
            }
            return false;
        }
        return (this == sqlSingle).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();
            _fNotNull = false;
        }
        else
        {
            _value = XmlConvert.ToSingle(reader.ReadElementString());
            _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(_value));
        }
    }
 
    public static XmlQualifiedName GetXsdType(XmlSchemaSet schemaSet)
    {
        return new XmlQualifiedName("float", "http://www.w3.org/2001/XMLSchema");
    }
}