| // Copyright 2021 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.bazel.bzlmod; |
| |
| import com.google.common.collect.Interner; |
| import com.google.devtools.build.lib.cmdline.RepositoryName; |
| import com.google.devtools.build.lib.concurrent.BlazeInterners; |
| import com.google.devtools.build.lib.packages.Package; |
| import com.google.devtools.build.lib.packages.Rule; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| import com.google.devtools.build.skyframe.AbstractSkyKey; |
| import com.google.devtools.build.skyframe.SkyFunctionName; |
| import com.google.devtools.build.skyframe.SkyValue; |
| |
| /** The result of {@link BzlmodRepoRuleFunction}, holding a repository rule instance. */ |
| @AutoCodec(explicitlyAllowClass = {Package.class}) |
| public class BzlmodRepoRuleValue implements SkyValue { |
| public static final SkyFunctionName BZLMOD_REPO_RULE = |
| SkyFunctionName.createHermetic("BZLMOD_REPO_RULE"); |
| |
| private final Package pkg; |
| private final String ruleName; |
| |
| public BzlmodRepoRuleValue(Package pkg, String ruleName) { |
| this.pkg = pkg; |
| this.ruleName = ruleName; |
| } |
| |
| public Rule getRule() { |
| return pkg.getRule(ruleName); |
| } |
| |
| public static Key key(RepositoryName repositoryName) { |
| return Key.create(repositoryName); |
| } |
| |
| /** Represents an unsuccessful repository lookup. */ |
| public static final class RepoRuleNotFoundValue extends BzlmodRepoRuleValue { |
| private RepoRuleNotFoundValue() { |
| super(/*pkg=*/ null, /*ruleName=*/ null); |
| } |
| |
| @Override |
| public Rule getRule() { |
| throw new IllegalStateException(); |
| } |
| } |
| |
| public static final RepoRuleNotFoundValue REPO_RULE_NOT_FOUND_VALUE = new RepoRuleNotFoundValue(); |
| |
| /** Argument for the SkyKey to request a BzlmodRepoRuleValue. */ |
| @AutoCodec |
| public static class Key extends AbstractSkyKey<RepositoryName> { |
| private static final Interner<Key> interner = BlazeInterners.newWeakInterner(); |
| |
| private Key(RepositoryName arg) { |
| super(arg); |
| } |
| |
| @AutoCodec.VisibleForSerialization |
| @AutoCodec.Instantiator |
| static Key create(RepositoryName arg) { |
| return interner.intern(new Key(arg)); |
| } |
| |
| @Override |
| public SkyFunctionName functionName() { |
| return BZLMOD_REPO_RULE; |
| } |
| } |
| } |