auto import from //depot/cupcake/@135843
diff --git a/tools/idegen/src/Excludes.java b/tools/idegen/src/Excludes.java
new file mode 100644
index 0000000..8531d47
--- /dev/null
+++ b/tools/idegen/src/Excludes.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.util.regex.Pattern;
+import java.util.List;
+
+/**
+ * Decides whether or not to exclude certain paths.
+ */
+public class Excludes {
+
+ private final List<Pattern> patterns;
+
+ /**
+ * Constructs a set of excludes matching the given patterns.
+ */
+ public Excludes(List<Pattern> patterns) {
+ this.patterns = patterns;
+ }
+
+ /**
+ * Returns true if the given path should be excluded.
+ */
+ public boolean exclude(String path) {
+ for (Pattern pattern : patterns) {
+ if (pattern.matcher(path).find()) {
+ return true;
+ }
+ }
+ return false;
+ }
+}