public static bool TryParse(string str, out Column column)
{
column = null;
if (string.IsNullOrEmpty(str))
{
return(false);
}
if (!ColumnParsingUtils.TryParse(str, out string name, out string sourceStr, out string kindStr))
{
return(false);
}
DataKind?kind = null;
if (kindStr != null && TypeParsingUtils.TryParseDataKind(kindStr, out DataKind parsedKind, out KeyRange range))
{
kind = parsedKind;
}
if (!int.TryParse(sourceStr, out int source))
{
return(false);
}
column = new Column()
{
Name = name,
Source = source,
Type = kind
};
return(true);
}
/// <summary>
/// For parsing from a string. This supports "name" and "name:source" and "name:extra:source". For the last
/// form, the out extra parameter is sort accordingly. For the other forms, extra is set to null.
/// Derived classes that want to provide parsing functionality to the CmdParser need to implement
/// a static Parse method. That method can call this (directly or indirectly) to handle the supported
/// syntax.
/// </summary>
protected bool TryParse(string str, out string extra)
{
Contracts.AssertNonEmpty(str);
return(ColumnParsingUtils.TryParse(str, out Name, out Source, out extra));
}
/// <summary>
/// For parsing from a string. This supports "name" and "name:source".
/// Derived classes that want to provide parsing functionality to the CmdParser need to implement
/// a static Parse method. That method can call this (directly or indirectly) to handle the supported
/// syntax.
/// </summary>
protected virtual bool TryParse(string str)
{
Contracts.AssertNonEmpty(str);
return(ColumnParsingUtils.TryParse(str, out Name, out Source));
}
