FileUtil: comparing only names (-1 minute on Chromium)

platform/lang-impl/src/com/intellij/psi/search/SpecificNameItemProcessor.java

@@ -24,16 +24,16 @@ import com.intellij.openapi.util.io.FileUtil;
 public abstract class SpecificNameItemProcessor implements PsiFileSystemItemProcessor {
   private final String myName;
 
-  public String getName() {
-    return myName;
-  }
-
   protected SpecificNameItemProcessor(String name) {
     myName = name;
   }
 
+  public String getName() {
+    return myName;
+  }
+
   @Override
   public boolean acceptItem(String name, boolean isDirectory) {
-    return FileUtil.pathsEqual(myName, name);
+    return FileUtil.namesEqual(myName, name);
   }
 }

platform/util/src/com/intellij/openapi/util/io/FileUtil.java

@@ -798,10 +798,19 @@ public class FileUtil extends FileUtilRt {
 
     path1 = toCanonicalPath(path1);
     path2 = toCanonicalPath(path2);
-    //noinspection ConstantConditions
     return PATH_HASHING_STRATEGY.equals(path1, path2);
   }
 
+  /**
+   * optimized version of pathsEqual - it only compares pure names, without file separators
+   */
+  public static boolean namesEqual(@Nullable String name1, @Nullable String name2) {
+    if (name1 == name2) return true;
+    if (name1 == null || name2 == null) return false;
+
+    return PATH_HASHING_STRATEGY.equals(name1, name2);
+  }
+
   public static int compareFiles(@Nullable File file1, @Nullable File file2) {
     return comparePaths(file1 == null ? null : file1.getPath(), file2 == null ? null : file2.getPath());
   }