public static TokenHandler <T> CreateParameterizedTokenHandler(ParameterizedFormatterFactory <T> formatterFactory)
{
return(delegate(string template, ref int currentIndex)
{
string parameter = string.Empty;
if (template[currentIndex] == '(')
{
int parameterStart = ++currentIndex;
while (true)
{
while (currentIndex < template.Length && template[currentIndex++] != ')')
{
;
}
if (currentIndex == template.Length)
{
return null;
}
if (template[currentIndex] == '}')
{
break;
}
}
parameter = template.Substring(parameterStart, currentIndex - parameterStart - 1);
}
currentIndex++;
return formatterFactory(parameter);
});
}
/// <summary>
/// Utility method to create a handler for tokens with parameters surrounded by parenthesis.
/// </summary>
/// <param name="formatterFactory">The factory delegate to create a formatter based on the token parameter.</param>
/// <returns>A token handler.</returns>
public static TokenHandler <T> CreateParameterizedTokenHandler(ParameterizedFormatterFactory <T> formatterFactory)
{
return(delegate(string template, ref int currentIndex)
{
string parameter = string.Empty;
if (template[currentIndex] == '(')
{
int parameterStart = ++currentIndex;
while (true)
{
// skip until ending ')' is found
while (currentIndex < template.Length && template[currentIndex++] != ')')
{
;
}
// template finished?
if (currentIndex == template.Length)
{
return null;
}
if (template[currentIndex] == '}')
{
break; // got to the end of the template
}
}
// then the stopped looking after finding a ')'
parameter = template.Substring(parameterStart, currentIndex - parameterStart - 1);
}
// should be looking at the last char in the template
currentIndex++; // advance the current index
return formatterFactory(parameter);
});
}
