/// <summary>
/// Create new instance of <see cref="MetaDataType"/>, if <paramref name="tag"/> is known, value from <see cref="PreDefined"/> will be returned.
/// </summary>
/// <param name="tag">Tag of metadata.</param>
/// <returns>New instance of <see cref="MetaDataType"/>, or instance from <see cref="PreDefined"/>.</returns>
/// <exception cref="ArgumentNullException"><paramref name="tag"/> is <see langword="null"/>.</exception>
/// <exception cref="ArgumentException"><paramref name="tag"/> contains invalid character.</exception>
public static MetaDataType Create(string tag)
{
tag = checkTag(tag);
if (PreDefined.TryGetValue(tag, out var r))
{
return(r);
}
return(new NoValidateMetaDataType(tag));
}
/// <summary>
/// Create new instance of <see cref="MetaDataType"/>, if <paramref name="tag"/> is known, value from <see cref="PreDefined"/> will be returned.
/// </summary>
/// <param name="tag">Tag of metadata.</param>
/// <param name="parser">Parser for <see cref="Parse(string)"/> method.</param>
/// <param name="stringifier">Stringifier for <see cref="Stringify(object)"/> method.</param>
/// <param name="defaultValue">Default value of metadata.</param>
/// <returns>New instance of <see cref="MetaDataType"/>, or instance from <see cref="PreDefined"/>.</returns>
/// <exception cref="ArgumentNullException"><paramref name="tag"/> or <paramref name="parser"/> is <see langword="null"/>.</exception>
/// <exception cref="ArgumentException"><paramref name="tag"/> contains invalid character.</exception>
/// <remarks>
/// If instance from <see cref="PreDefined"/> is returned, <paramref name="parser"/> and <paramref name="stringifier"/> will be ignored.
/// </remarks>
public static MetaDataType Create <T>(string tag, Func <string, T> parser, Func <T, string> stringifier, T defaultValue)
{
if (parser is null)
{
throw new ArgumentNullException(nameof(parser));
}
tag = checkTag(tag);
if (PreDefined.TryGetValue(tag, out var r))
{
return(r);
}
return(new DelegateMetaDataType <T>(tag, parser, stringifier, defaultValue));
}
