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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.common.collect.ImmutableSetMultimap;
import com.google.common.collect.Iterables;
import com.google.common.collect.SetMultimap;
import com.facebook.buck.apple.xcode.xcodeproj.PBXFileReference;
import com.facebook.buck.apple.xcode.xcodeproj.PBXReference;
import com.facebook.buck.apple.xcode.xcodeproj.PBXReference.SourceTree;
import com.facebook.buck.apple.xcode.xcodeproj.PBXVariantGroup;
import com.facebook.buck.apple.xcode.xcodeproj.XCVersionGroup;
import java.nio.file.Path;
/**
* An aggregate reference is a kind of PBXReference that contains one or more files, grouped by some
* criteria, and appearing as a group in the Xcode project navigator, and often handled as a single
* file during the build phase and in other situations.
*/
public enum AggregateReferenceType {
/**
* A group which contains multiple .xcdatamodel directories where each is a different version of
* the same schema. We may have to support other files besides .xcdatamodel in the future.
* Instances of this group are represented by {@link XCVersionGroup} and are grouped by the
* relative path of the containing .xcdatamodeld directory.
*/
XCVersionGroup {
@Override
public PBXReference create(AggregateKey key, Iterable<PBXFileReference> children) {
XCVersionGroup result = new XCVersionGroup(
key.name().orNull(),
key.path().isPresent() ? key.path().get().toString() : null,
SourceTree.GROUP);
Iterables.addAll(result.getChildren(), children);
return result;
}
@Override
public AggregateKey aggregateKey(Path path) {
Path parent = path.getParent();
if (parent.getFileName().toString().endsWith(".xcdatamodeld")) {
return new AggregateKey(
Optional.of(parent.getFileName().toString()), Optional.of(parent));
} else {
return AggregateKey.standalone();
}
}
@Override
public Path pathInAggregate(Path path) {
return path.getFileName();
}
},
/**
* A group which contains the same content in multiple languages, each language belonging to a
* different file. Instances of this group are represented by {@link PBXVariantGroup} and are
* grouped by the base name of the file (e.g. "foo" in "/usr/bar/foo").
*/
PBXVariantGroup {
@Override
public PBXReference create(AggregateKey key, Iterable<PBXFileReference> children) {
PBXVariantGroup result = new PBXVariantGroup(
key.name().orNull(),
key.path().isPresent() ? key.path().get().toString() : null,
SourceTree.GROUP);
Iterables.addAll(result.getChildren(), children);
return result;
}
@Override
public AggregateKey aggregateKey(Path path) {
if (Resources.languageOfLprojDir(path).isPresent()) {
return new AggregateKey(
Optional.of(path.getFileName().toString()), Optional.<Path>absent());
} else {
return AggregateKey.standalone();
}
}
@Override
public Path pathInAggregate(Path path) {
return path;
}
};
/**
* Creates a new instance of this group with the group information and children.
*/
public abstract PBXReference create(AggregateKey key, Iterable<PBXFileReference> children);
/**
* Returns the value by which this item should be grouped. All items sharing the same key should
* belong to the same group. An {@link AggregateKey#standalone()} return here indicates that the
* item should not belong to a group and should be built and treated as a standalone file.
*/
public abstract AggregateKey aggregateKey(Path path);
public abstract Path pathInAggregate(Path path);
/**
* Groups a sequence of items according to their {@link #aggregateKey(Path)}.
*/
public SetMultimap<AggregateKey, Path> aggregates(Iterable<Path> paths) {
ImmutableSetMultimap.Builder<AggregateKey, Path> result =
new ImmutableSetMultimap.Builder<>();
for (Path path : paths) {
AggregateKey key = aggregateKey(path);
Path referencePath = key.isStandalone() ? path : pathInAggregate(path);
result.put(key, referencePath);
}
return result.build();
}
}
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