1 files changed, 37 insertions, 0 deletions
diff --git a/src/objc_tools/xcodegen/java/com/google/devtools/build/xcode/xcodegen/PbxReferencesProcessor.java b/src/objc_tools/xcodegen/java/com/google/devtools/build/xcode/xcodegen/PbxReferencesProcessor.java
new file mode 100644
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--- /dev/null
+++ b/src/objc_tools/xcodegen/java/com/google/devtools/build/xcode/xcodegen/PbxReferencesProcessor.java
@@ -0,0 +1,37 @@
+// Copyright 2014 Google Inc. All rights reserved.
+//
+// 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.
+
+package com.google.devtools.build.xcode.xcodegen;
+
+import com.facebook.buck.apple.xcode.xcodeproj.PBXReference;
+import com.facebook.buck.apple.xcode.xcodeproj.PBXReference.SourceTree;
+
+/**
+ * Processes a sequence of self-contained references in some manner before they are added to a
+ * project.
+ *
+ * <p>A <em>self-contained</em> reference is one that is not a member of a PBXVariantGroup or other
+ * aggregate group, although a self-contained reference may contain such a reference as a child.
+ */
+public interface PbxReferencesProcessor {
+  /**
+   * Processes the references of the main group to generate another sequence of references, which
+   * may or may not reuse the input references.
+   *
+   * <p>The on-disk path of the main group is assumed to point to workspace root. This is important
+   * when the {@code sourceRoot} property of the references in the input or output arguments are
+   * {@link SourceTree#GROUP}.
+   */
+  Iterable<PBXReference> process(Iterable<PBXReference> references);
+}