⚡ Cache compiled regex patterns in TestFolderPathPattern

Implemented a static LRU cache for compiled regex patterns in the
TestFolderPathPattern.resolveGroups method to avoid redundant
compilation when processing multiple files in the same folders.

Co-authored-by: RoiSoleil <3462260+RoiSoleil@users.noreply.github.com>

Author: google-labs-jules[bot]

org.moreunit.core/src/org/moreunit/core/matching/TestFolderPathPattern.java

@@ -16,10 +16,13 @@
 import java.util.regex.Pattern;
 
 import org.moreunit.core.resources.Path;
+import org.moreunit.core.util.LRUCache;
 import org.moreunit.core.util.Strings;
 
 public class TestFolderPathPattern
 {
+    private static final Map<String, Pattern> PATTERN_CACHE = new LRUCache<String, Pattern>(50);
+
     public static final String SRC_PROJECT_VARIABLE = "${srcProject}";
 
     private static final int MAX_GROUPS = 9;
@@ -200,7 +203,18 @@ private String resolveGroups(String path, String tplWithGroups, String tplWithRe
     {
         String result = tplWithRefs;
 
-        Matcher matcher = Pattern.compile(tplWithGroups).matcher(path);
+        Pattern pattern;
+        synchronized (PATTERN_CACHE)
+        {
+            pattern = PATTERN_CACHE.get(tplWithGroups);
+            if(pattern == null)
+            {
+                pattern = compile(tplWithGroups);
+                PATTERN_CACHE.put(tplWithGroups, pattern);
+            }
+        }
+
+        Matcher matcher = pattern.matcher(path);
         if(matcher.matches())
         {
             List<GroupRef> groupRefs = getGroupRefs(result);