/// <inheritdoc/>
public void WriteYaml(IEmitter emitter, object value, Type type)
{
emitter.Emit(new Scalar(null, NeonHelper.EnumToString(type, value)));
}
/// <summary>
/// Attempts to parse an environment variable as an eumeration, writting messages
/// to the associated logger if one was passed to the constructor.
/// </summary>
/// <typeparam name="TEnum">The desired enumeration type.</typeparam>
/// <param name="variable">The variable name.</param>
/// <param name="defaultInput">The default value.</param>
/// <param name="required">Optionally specifies that the variable is required to exist.</param>
/// <param name="validator">
/// Optional validation function to be called to verify that the parsed variable
/// value is valid. This should return <c>null</c> for valid values and an error
/// message for invalid ones.
/// </param>
/// <returns>The parsed value.</returns>
/// <exception cref="KeyNotFoundException">Thrown if the variable does not exists and <paramref name="required"/>=<c>true</c>.</exception>
/// <exception cref="FormatException">Thrown if the variable could not be parsed or the <paramref name="validator"/> returned an error.</exception>
public TEnum Get <TEnum>(string variable, TEnum defaultInput, bool required = false, Validator <TEnum> validator = null)
where TEnum : Enum
{
return(Parse <TEnum>(variable, NeonHelper.EnumToString(defaultInput), EnumParser, required, validator));
}
