/// <summary>
/// Get Unity tagPaths by logic and tags.
/// </summary>
/// <param name="tagLogic">The tag logic.</param>
/// <param name="tags">The tags.</param>
public IEnumerable <IEnumerable <string> > GetTagPathMatches(TagLogic tagLogic, params string[] tags)
{
IEnumerable <IEnumerable <string> > baseTagPaths = AllTagPaths;
IEnumerable <string> splitTags = tags.SelectMany(t => t.Split('/'));
IEnumerable <string> regexTagPatterns = splitTags.Where(p => Regex.Match(p, @"[*+?^\\{}\[\]$<>:]").Success);
IEnumerable <string> regexTags = regexTagPatterns.SelectMany(p => AllTags.Where(t => Regex.Match(t, p).Success));
IEnumerable <string> findTags = splitTags.Except(regexTagPatterns).Concat(regexTags).Distinct();
IEnumerable <IEnumerable <string> > resultTagPaths = null; // Enumerable.Empty<IEnumerable<string>>();
foreach (IEnumerable <IEnumerable <string> > tagPaths in findTags.Select(t => AllTagPaths.Where(p => ExpandTagGroups(p).Contains(t))))
{
resultTagPaths = GetTagPathMatches(tagLogic, tagPaths, resultTagPaths);
}
return(resultTagPaths ?? Enumerable.Empty <IEnumerable <string> >());
}
/// <summary>
/// Determines if gameObject has the tags derived from specified tagLogic and tag(s).
/// </summary>
/// <param name="gameObject">The gameObject.</param>
/// <param name="tagSearch">The tag search.</param>
/// <param name="tags">The tags.</param>
public static bool HasTags(this GameObject gameObject, TagLogic tagSearch, params string[] tags)
{
var gameObjectTags = gameObject.Tags();
switch (tagSearch)
{
case TagLogic.And:
return(tags.All(t => gameObjectTags.Contains(t)));
case TagLogic.Or:
return(tags.Any(t => gameObjectTags.Contains(t)));
case TagLogic.Invert:
return(tags.All(t => !gameObjectTags.Contains(t)));
default:
return(false);
}
}
/// <summary>
/// Get Unity tagPaths by logic and tags starting from initial state.
/// </summary>
/// <param name="tagLogic">The tag logic.</param>
/// <param name="op1TagPaths">The tagPaths used by the logic expression.</param>
/// <param name="op2TagPaths">The initial state used by the logic expression.</param>
public IEnumerable <IEnumerable <string> > GetTagPathMatches(TagLogic tagLogic, IEnumerable <IEnumerable <string> > op1TagPaths, IEnumerable <IEnumerable <string> > op2TagPaths = null)
{
IEnumerable <string> allTagPaths = AllTagPaths.Select(p => JoinTags(p)).ToList();
IEnumerable <string> operand1 = op1TagPaths.Select(p => JoinTags(p)).ToList();
IEnumerable <string> operand2 = op2TagPaths != null?op2TagPaths.Select(p => JoinTags(p)) : Enumerable.Empty <string>();
TagLogic tagOperations = op2TagPaths == null ? tagLogic & TagLogic.Invert : tagLogic;
foreach (TagLogic tagOperation in tagOperations.GetFlags())
{
switch (tagOperation)
{
case TagLogic.Invert:
operand1 = allTagPaths.Except(operand1);
break;
case TagLogic.And:
operand1 = operand1.Intersect(operand2);
break;
case TagLogic.Or:
operand1 = operand1.Union(operand2);
break;
case TagLogic.Xor:
operand1 = operand1.Except(operand1.Intersect(operand2));
break;
default:
operand1 = Enumerable.Empty <string>();
break;
}
}
Logger.Trace("tagLogic={0} Result={1}{4}Operand1={2}{4}Operand2={3}", tagLogic, string.Join(",", operand1.ToArray()), JoinTagPaths(op2TagPaths), JoinTagPaths(op1TagPaths), Environment.NewLine);
return(operand1.Select(p => p.Split('/').AsEnumerable()));
}
/// <summary>
/// Initializes a new instance of the <see cref="TagExpression" /> class.
/// </summary>
/// <param name="operation">The tag logic operation.</param>
/// <param name="operands">The tagPath operands.</param>
public TagExpression(TagLogic operation, IEnumerable <IEnumerable <string> > operands)
{
this.Operation = operation;
this.TagPaths = operands;
}
public TagService()
{
tagLogic = new TagLogic();
}
/// <summary>
/// Determines if component has the tags derived from specified tagLogic and tag(s).
/// </summary>
/// <param name="component">The component.</param>
/// <param name="tagLogic">The tag search.</param>
/// <param name="tags">The tags.</param>
public static bool HasTags(this Component component, TagLogic tagLogic, params string[] tags)
{
return(component.gameObject.HasTags(tagLogic, tags));
}
/// <summary>
/// Find gameObjects by taking existing gameObjects tagPath and performing tagLogic operation with the derived tagPattern tagPaths.
/// </summary>
/// <param name="gameObject">The starting gameObject.</param>
/// <param name="tagLogic">The tag logic operation between gameObject tagPath and tagPattern tagPaths.</param>
/// <param name="tagPattern">The tag pattern used to generate a set of tagPaths.</param>
public static GameObject[] FindGameObjectsWithTags(this GameObject gameObject, TagLogic tagLogic, string tagPattern)
{
return(TagService.FindGameObjectsWithTags(TagService.GetTagPathMatches(tagLogic, TagService.GetTagPathMatches(tagPattern), TagService.FormatTagPaths(gameObject.tag))));
}
/// <summary>
/// Find gameObjects by taking existing gameObjects tagPath and performing tagLogic operation with the derived tagPattern tagPaths.
/// </summary>
/// <param name="gameObjects">The starting gameObjects.</param>
/// <param name="tagLogic">The tag logic operation between gameObjects tagPath and tagPattern tagPaths.</param>
/// <param name="tagPattern">The tag pattern used to generate a set of tagPaths.</param>
public static GameObject[] FindGameObjectsWithTags(this IEnumerable <GameObject> gameObjects, TagLogic tagLogic, string tagPattern)
{
return(TagService.FindGameObjectsWithTags(TagService.GetTagPathMatches(tagLogic, gameObjects.Tags(), TagService.GetTagPathMatches(tagPattern))));
}
/// <summary>
/// Gets the tagPaths by logic and tag starting from initial tags.
/// </summary>
/// <param name="tagLogic">The tag logic.</param>
/// <param name="startTagPaths">The start tag paths.</param>
/// <param name="tag">The tag used by logic.</param>
private IEnumerable <IEnumerable <string> > GetTagPathMatches(TagLogic tagLogic, IEnumerable <IEnumerable <string> > startTagPaths, string tag)
{
return(GetTagPathMatches(tagLogic, GetTagPathMatches(TagLogic.Or, tag), startTagPaths));
}
/// <summary>
/// Get Unity tagPaths by tag pattern.
/// </summary>
/// <param name="findPattern">The find pattern (ie. TagAccess.T1, "T1", "T1 | T2", or "T.*").</param>
public IEnumerable <IEnumerable <string> > GetTagPathMatches(string findPattern)
{
Logger.Debug("Searching tag pattern={0}", findPattern);
string pattern = @"(([!&|^]*)([(!]*)([^!&|^()]+)(\)*))+.*$";
Stack <TagExpression> operands = new Stack <TagExpression>();
IEnumerable <IEnumerable <string> > tagPathMatches = Enumerable.Empty <IEnumerable <string> >();
Match match = Regex.Match(findPattern.Replace(" ", String.Empty), pattern);
for (int captureIndex = 0; captureIndex < match.Groups[1].Captures.Count; captureIndex++)
{
string subPatternClause = match.Groups[1].Captures[captureIndex].Value;
string logicExpression = match.Groups[2].Captures[captureIndex].Value;
string openClause = match.Groups[3].Captures[captureIndex].Value;
string tag = match.Groups[4].Captures[captureIndex].Value;
string closeClause = match.Groups[5].Captures[captureIndex].Value;
TagLogic operation = TagLogic.None;
foreach (char op in logicExpression)
{
switch (op)
{
case '!':
operation |= TagLogic.Invert;
break;
case '&':
operation |= TagLogic.And;
break;
case '|':
operation |= TagLogic.Or;
break;
case '^':
operation |= TagLogic.Xor;
break;
}
}
Logger.Trace("Searching tag sub-pattern={0} logicClause={1} openClause={2} tagClause={3} closeClause={4} operation={5}",
subPatternClause, logicExpression, openClause, tag, closeClause, operation);
for (int i = 0; i < openClause.Length; i++)
{
if (openClause[i] == '!')
{
operation ^= TagLogic.Invert;
}
else if (openClause[i] == '(')
{
Logger.Trace("Push operation={0} tagPathMatches={1}", operation, JoinTagPaths(tagPathMatches));
operands.Push(new TagExpression(operation, tagPathMatches));
operation = TagLogic.None;
}
}
// Evaluate logic operation
tagPathMatches = GetTagPathMatches(operation, tagPathMatches, tag);
for (int closeClauseIndex = 0; closeClauseIndex < closeClause.Length; closeClauseIndex++)
{
TagExpression tagExpression = operands.Pop();
Logger.Trace("Pop operation={0} tagPaths={1}", tagExpression.Operation, JoinTagPaths(tagExpression.TagPaths));
tagPathMatches = GetTagPathMatches(tagExpression.Operation, tagPathMatches, tagExpression.TagPaths);
}
}
return(tagPathMatches);
}
/// <summary>
/// Find gameObjects by logic and tags.
/// </summary>
/// <param name="tagSearch">The tag logic expression.</param>
/// <param name="tags">The tags to be combined with the logic.</param>
public GameObject[] FindGameObjectsWithTags(TagLogic tagSearch, params string[] tags)
{
IEnumerable <IEnumerable <string> > searchPaths = GetTagPathMatches(tagSearch, tags);
return(FindGameObjectsWithTags(searchPaths).ToArray());
}
