private static IEnumerable <RuleMatch> GetMatches(
IRule rule,
ExplorerContext context)
{
var leftMatches = context.InvokeRule(rule);
foreach (var m in leftMatches)
{
var newContext = context.MoveForward(m);
var interleaveLength = newContext.MatchInterleave();
var fullMatch = m.AddInterleaveLength(interleaveLength);
yield return(fullMatch);
}
}
private int MatchInterleave(ExplorerContext interleaveContext)
{
if (_interleaveRule == null)
{
return(0);
}
else
{
var interleaveMatch = _interleaveRule.Match(interleaveContext).FirstOrDefault();
if (interleaveMatch == null || interleaveMatch.Text.Length == 0)
{
return(0);
}
else
{
var newInterleaveContext = interleaveContext.MoveForward(interleaveMatch);
// Recursion
var remainingLength = MatchInterleave(newInterleaveContext);
return(interleaveMatch.Text.Length + remainingLength);
}
}
}