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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.google.common.base.Optional;
import com.google.devtools.build.xcode.util.Value;
import java.nio.file.Path;
/**
* Data used to as a key when assigning items to aggregate references
* (see {@link AggregateReferenceType}). All items sharing a single key value should belong to the
* same group.
* <p>
* Note that the information in the grouping key is also the information that is used to create a
* new group, minus the actual list of files in the group. See
* {@link AggregateReferenceType#create(AggregateKey, Iterable)}.
*/
public class AggregateKey extends Value<AggregateKey> {
private final Optional<String> name;
private final Optional<Path> path;
public AggregateKey(Optional<String> name, Optional<Path> path) {
super(name, path);
this.name = name;
this.path = path;
}
public Optional<String> name() {
return name;
}
public Optional<Path> path() {
return path;
}
/**
* Returns an instance that indicates any item assigned to it should not belong to a group.
*/
public static AggregateKey standalone() {
return new AggregateKey(Optional.<String>absent(), Optional.<Path>absent());
}
/**
* Indicates that this grouping key means an item should not belong to any group.
*/
public boolean isStandalone() {
return !path().isPresent() && !name().isPresent();
}
}
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