/// <summary>
/// Attempts to match the expression item with the values returned by the parser.
/// </summary>
/// <param name="attempt">The parser currently iterating over the token source.</param>
/// <param name="itemName">The name of the item in the outer expression.</param>
/// <returns>The results of the match.</returns>
public MatchResult Match(IParseAttempt attempt, string itemName)
{
MatchResult result = new MatchResult()
{
ItemName = itemName, IsMatch = true
};
foreach (ExpressionItem detail in expression.Items)
{
IParseAttempt nextAttempt = attempt.Attempt();
MatchResult innerResult = detail.Item.Match(nextAttempt, detail.ItemName);
if (innerResult.IsMatch)
{
attempt.Accept(nextAttempt);
result.Matches.Add(innerResult);
}
else
{
nextAttempt.Reject();
if (detail.IsRequired)
{
result.IsMatch = false;
return(result);
}
}
}
return(result);
}
/// <summary>
/// Attempts to match the expression item with the values returned by the parser.
/// </summary>
/// <param name="attempt">The parser currently iterating over the token source.</param>
/// <param name="itemName">This value will be empty for an options list.</param>
/// <returns>The results of the match.</returns>
public MatchResult Match(IParseAttempt attempt, string itemName)
{
foreach (ExpressionItem option in options)
{
IParseAttempt nextAttempt = attempt.Attempt();
MatchResult innerResult = option.Item.Match(nextAttempt, option.ItemName);
if (innerResult.IsMatch)
{
attempt.Accept(nextAttempt);
return(innerResult);
}
nextAttempt.Reject();
}
return(new MatchResult()
{
IsMatch = false
});
}
