src/objc_tools/xcodegen/java/com/google/devtools/build/xcode/xcodegen/PbxReferencesProcessor.java


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// Copyright 2014 The Bazel Authors. 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);
}