/
ArgumentArityExtensions.cs
37 lines (31 loc) · 1.78 KB
/
ArgumentArityExtensions.cs
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namespace CommandDotNet
{
public static class ArgumentArityExtensions
{
// begin-snippet: arity-extensions
/// <summary><see cref="IArgumentArity.Maximum"/> > 1</summary>
public static bool AllowsMany(this IArgumentArity arity) => arity.Maximum > 1;
/// <summary><see cref="IArgumentArity.Maximum"/> >= 1</summary>
public static bool AllowsOneOrMore(this IArgumentArity arity) => arity.Maximum >= 1;
/// <summary><see cref="IArgumentArity.Minimum"/> > 0</summary>
public static bool RequiresAtLeastOne(this IArgumentArity arity) => arity.Minimum > 0;
/// <summary><see cref="IArgumentArity.Minimum"/> == 1 == <see cref="IArgumentArity.Maximum"/></summary>
public static bool RequiresExactlyOne(this IArgumentArity arity) => arity.Minimum == 1 && arity.Maximum == 1;
/// <summary>
/// <see cref="IArgumentArity.Maximum"/> == 0.
/// e.g. <see cref="ArgumentArity.Zero"/>
/// </summary>
public static bool RequiresNone(this IArgumentArity arity) => arity.Maximum == 0;
/// <summary>
/// <see cref="IArgumentArity.Minimum"/> == 0.
/// e.g. <see cref="ArgumentArity.Zero"/>, <see cref="ArgumentArity.ZeroOrOne"/>, <see cref="ArgumentArity.ZeroOrMore"/>
/// </summary>
public static bool AllowsNone(this IArgumentArity arity) => arity.Minimum == 0;
/// <summary>
/// <see cref="IArgumentArity.Maximum"/> == <see cref="ArgumentArity.Unlimited"/> (<see cref="int.MaxValue"/>).
/// e.g. <see cref="ArgumentArity.ZeroOrMore"/>, <see cref="ArgumentArity.OneOrMore"/>
/// </summary>
public static bool AllowsUnlimited(this IArgumentArity arity) => arity.Maximum == ArgumentArity.Unlimited;
// end-snippet
}
}