public static KeyRange Parse(string str)
{
Contracts.AssertValue(str);
var res = new KeyRange();
if (res.TryParse(str))
{
return(res);
}
return(null);
}
/// <summary>
/// Attempt to parse the string into a data kind and (optionally) a key range. This method does not check whether
/// the returned <see cref="DataKind"/> can really be made into a key with the specified <paramref name="keyRange"/>.
/// </summary>
/// <param name="str">The string to parse.</param>
/// <param name="dataKind">The parsed data kind.</param>
/// <param name="keyRange">The parsed key range, or null if there's no key specification.</param>
/// <returns>Whether the parsing succeeded or not.</returns>
public static bool TryParseDataKind(string str, out DataKind dataKind, out KeyRange keyRange)
{
Contracts.CheckValue(str, nameof(str));
keyRange = null;
dataKind = default(DataKind);
int ich = str.IndexOf('[');
if (ich >= 0)
{
if (str[str.Length - 1] != ']')
{
return(false);
}
keyRange = KeyRange.Parse(str.Substring(ich + 1, str.Length - ich - 2));
if (keyRange == null)
{
return(false);
}
if (ich == 0)
{
return(true);
}
str = str.Substring(0, ich);
}
DataKind kind;
if (!Enum.TryParse <DataKind>(str, true, out kind))
{
return(false);
}
dataKind = kind;
return(true);
}