public IEnumerable <Match <T> > EnumerateMatches <T>(IGlobMatchableHierarchy <T> hierarchy)
{
var start = new GlobMatchFactory(hierarchy.CaseSensitive).Start(glob);
var worklist = new Worklist <Match <T> >();
worklist.Add(new Match <T>(hierarchy.Root, start));
while (worklist.TryTake(out var pair))
{
foreach (var child in hierarchy.GetChildrenMatchingPrefix(pair.Item, pair.Details.GetPrefixFilter()))
{
var newState = pair.Details.MatchChild(hierarchy.GetName(child));
if (newState.IsMatch)
{
yield return(new Match <T>(child, newState));
}
if (newState.CanContinue && hierarchy.IsContainer(child))
{
worklist.Add(new Match <T>(child, newState));
}
}
}
}
public IEnumerable <MultiMatch <T> > EnumerateMatches <T>(IGlobMatchableHierarchy <T> hierarchy)
{
var factory = new GlobMatchFactory(hierarchy.CaseSensitive);
var starts = rules.Select(r => new Rule(factory.Start(r.Glob), r.Exclude)).ToArray();
var worklist = new Worklist <State <T> >();
worklist.Add(new State <T>(hierarchy.Root, starts));
var newStates = new List <Rule>();
var matches = new List <GlobMatch>();
while (worklist.TryTake(out var pair))
{
var includePrefix = GetCommonPrefix(pair.Current.Where(c => !c.Exclude));
if (includePrefix == null)
{
continue; // No inclusions remaining for this node.
}
foreach (var child in hierarchy.GetChildrenMatchingPrefix(pair.Item, includePrefix))
{
var name = hierarchy.GetName(child);
var isContainer = hierarchy.IsContainer(child);
var isExcluded = false;
newStates.Clear();
matches.Clear();
foreach (var state in pair.Current)
{
var newState = state.Details.MatchChild(name);
if (state.Exclude)
{
if (newState.IsMatch)
{
isExcluded = true;
}
if (newState.MatchesAllChildren)
{
// Early exit: entire subtree is ignored for subsequent rules.
break;
}
}
else if (!isExcluded)
{
if (newState.IsMatch)
{
matches.Add(newState);
}
}
if (newState.CanContinue && isContainer)
{
newStates.Add(new Rule(newState, state.Exclude));
}
}
if (matches.Any())
{
yield return(new MultiMatch <T>(child, matches.ToArray()));
}
if (newStates.Any())
{
worklist.Add(new State <T>(child, newStates.ToArray()));
}
}
}
string?GetCommonPrefix(IEnumerable <Rule> states)
{
var prefixes = states.Select(s => s.Details.GetPrefixFilter()).ToList();
if (prefixes.Count == 0)
{
return(null);
}
return(Util.LongestCommonPrefix(prefixes, hierarchy.CaseSensitive));
}
}
