| // 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.lib.skyframe; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Interner; |
| import com.google.devtools.build.lib.cmdline.RepositoryName; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSet; |
| import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder; |
| import com.google.devtools.build.lib.collect.nestedset.Order; |
| import com.google.devtools.build.lib.concurrent.BlazeInterners; |
| import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; |
| import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| import com.google.devtools.build.lib.vfs.PathFragment; |
| import com.google.devtools.build.lib.vfs.RootedPath; |
| import com.google.devtools.build.skyframe.SkyFunctionName; |
| import com.google.devtools.build.skyframe.SkyValue; |
| |
| /** |
| * This value represents the result of looking up all the packages under a given package path root, |
| * starting at a given directory. |
| */ |
| @Immutable |
| @ThreadSafe |
| public class RecursivePkgValue implements SkyValue { |
| @AutoCodec |
| static final RecursivePkgValue EMPTY = |
| new RecursivePkgValue(NestedSetBuilder.<String>emptySet(Order.STABLE_ORDER)); |
| |
| private final NestedSet<String> packages; |
| |
| private RecursivePkgValue(NestedSet<String> packages) { |
| this.packages = packages; |
| } |
| |
| static RecursivePkgValue create(NestedSetBuilder<String> packages) { |
| if (packages.isEmpty()) { |
| return EMPTY; |
| } |
| return new RecursivePkgValue(packages.build()); |
| } |
| |
| /** Create a transitive package lookup request. */ |
| @ThreadSafe |
| public static Key key( |
| RepositoryName repositoryName, |
| RootedPath rootedPath, |
| ImmutableSet<PathFragment> excludedPaths) { |
| return Key.create(repositoryName, rootedPath, excludedPaths); |
| } |
| |
| public NestedSet<String> getPackages() { |
| return packages; |
| } |
| |
| @AutoCodec.VisibleForSerialization |
| @AutoCodec |
| static class Key extends RecursivePkgSkyKey { |
| private static final Interner<Key> interner = BlazeInterners.newWeakInterner(); |
| |
| private Key( |
| RepositoryName repositoryName, |
| RootedPath rootedPath, |
| ImmutableSet<PathFragment> excludedPaths) { |
| super(repositoryName, rootedPath, excludedPaths); |
| } |
| |
| @AutoCodec.VisibleForSerialization |
| @AutoCodec.Instantiator |
| static Key create( |
| RepositoryName repositoryName, |
| RootedPath rootedPath, |
| ImmutableSet<PathFragment> excludedPaths) { |
| return interner.intern(new Key(repositoryName, rootedPath, excludedPaths)); |
| } |
| |
| @Override |
| public SkyFunctionName functionName() { |
| return SkyFunctions.RECURSIVE_PKG; |
| } |
| } |
| } |