/// <summary>
/// Reads the option value
/// </summary>
/// <typeparam name="T">Option type</typeparam>
/// <param name="option">Option reference</param>
/// <returns>Option value</returns>
public T Read <T>(Option <T> option)
{
CheckConfigured();
CheckCanParse(option.NonNullableType);
OptionValue optionValue;
_nameToOptionValue.TryGetValue(option.Name, out optionValue);
if (!optionValue.IsExpired(_config.CacheTimeout))
{
return((T)optionValue.RawValue);
}
string value = ReadFirstValue(option.Name);
if (value == null)
{
optionValue.RawValue = option.DefaultValue;
}
else if (DefaultParser.IsSupported(option.NonNullableType))
{
object resultObject;
if (DefaultParser.TryParse(value, option.NonNullableType, out resultObject))
{
optionValue.Update <T>((T)resultObject);
}
else
{
optionValue.Update(option.DefaultValue);
}
}
else
{
ITypeParser typeParser = _config.GetParser(option.NonNullableType);
object result;
typeParser.TryParse(value, option.NonNullableType, out result);
optionValue.Update <T>((T)result);
}
OnReadOption(option, optionValue.RawValue);
return((T)optionValue.RawValue);
}