/// <summary>
/// Replaces the tokens in a given template string by the values found in the token value provider object(s) of this instance.
/// </summary>
/// <param name="template">The template string.</param>
/// <returns>The template string with tokens replaced by the respective values.</returns>
public string ReplaceTokens(string template)
{
var tokenPattern = $@"{LDelim}(?<tokenref>\S[^{RDelim}]*){RDelim}";
foreach (Match token in Regex.Matches(template, tokenPattern))
{
var tokenRef = TokenRef.Parse(token.Groups["tokenref"].Value);
var tokenValue = FindTokenValue(tokenRef.TokenName);
if (tokenValue == null)
{
continue;
}
if (tokenRef.IsIndexedValue)
{
tokenValue = GetIndexedValue(tokenValue, tokenRef.Index);
}
var formattedTokenValue = string.Format(tokenRef.Format, tokenValue);
template = template.Replace(token.Value, formattedTokenValue);
}
return(template);
}
public StringExpression(TokenRef <Tkn> value) => Value = value.ToStringValue();
