using System;

namespace DataBoss.Data

{

[DbType(typeof(string), required: true)]

public struct RequiredString : IComparable<RequiredString>, IEquatable<RequiredString>

{

readonly string v;

public RequiredString(string value) { this.v = value ?? throw new ArgumentNullException(nameof(value)); }

public string Value => v ?? string.Empty;

public static explicit operator RequiredString(string value) => new RequiredString(value);

public static implicit operator string(RequiredString s) => s.Value;

public int CompareTo(RequiredString other) => this.Value.CompareTo(other.Value);

public bool Equals(RequiredString other) => this.Value.Equals(other.Value);

public override bool Equals(object obj) => obj is RequiredString other && Equals(other);

public override int GetHashCode() => Value.GetHashCode();

public static bool operator ==(RequiredString left, RequiredString right) => left.Equals(right);

public static bool operator !=(RequiredString left, RequiredString right) => !(left == right);

public static bool operator <(RequiredString left, RequiredString right) => left.CompareTo(right) < 0;

public static bool operator <=(RequiredString left, RequiredString right) => left.CompareTo(right) <= 0;

public static bool operator >(RequiredString left, RequiredString right) => left.CompareTo(right) > 0;

public static bool operator >=(RequiredString left, RequiredString right) => left.CompareTo(right) >= 0;

}

}