/// <summary>
/// Clones this instance and all of it's items. This lets us reuse pattern parsing result, without having to remember
/// the item's initial state before being modified to match the results of the formatters.
/// </summary>
/// <returns>
/// The <see cref="IFormatterRequestCollection" />.
/// </returns>
public IFormatterRequestCollection Clone()
{
var result = new FormatterRequestCollection();
foreach (var request in this)
{
result.Add(request.Clone());
}
return(result);
}
/// <summary>
/// Parses the specified source.
/// </summary>
/// <param name="source">
/// The source.
/// </param>
/// <returns>
/// The <see cref="IFormatterRequestCollection" />.
/// </returns>
public IFormatterRequestCollection Parse(StringBuilder source)
{
var literals = this.literalParser.ParseLiterals(source).ToArray();
if (literals.Length == 0)
{
return(new FormatterRequestCollection());
}
var result = new FormatterRequestCollection();
foreach (var literal in literals)
{
// The first token to follow an opening brace will be the variable name.
int lastIndex;
string variableName = ReadLiteralSection(literal, 0, false, out lastIndex) !;
// The next (if any), is the formatter to use. Null is allowed.
string?formatterKey = null;
// The rest of the string is what we pass into the formatter. Can be null.
string?formatterArgs = null;
if (variableName.Length != literal.InnerText.Length)
{
formatterKey = ReadLiteralSection(literal, variableName.Length + 1, true, out lastIndex);
if (formatterKey != null)
{
formatterArgs =
literal.InnerText.ToString(lastIndex + 1, literal.InnerText.Length - lastIndex - 1).Trim();
}
}
result.Add(new FormatterRequest(literal, variableName, formatterKey, formatterArgs));
}
return(result);
}
