| // 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.rules.java; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.analysis.TransitiveInfoCollection; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; |
| import com.google.devtools.build.lib.packages.Info; |
| import com.google.devtools.build.lib.packages.RuleClass.ConfiguredTargetFactory.RuleErrorException; |
| import com.google.devtools.build.lib.packages.StarlarkInfo; |
| import com.google.devtools.build.lib.packages.StarlarkProviderWrapper; |
| import javax.annotation.Nullable; |
| import net.starlark.java.eval.EvalException; |
| import net.starlark.java.eval.Sequence; |
| |
| /** Marks configured targets that are able to supply message bundles to their dependents. */ |
| @Immutable |
| public final class MessageBundleInfo { |
| |
| private static final String STARLARK_NAME = "MessageBundleInfo"; |
| |
| /** Provider singleton constant. */ |
| private static final StarlarkProviderWrapper<MessageBundleInfo> PROVIDER = new Provider(); |
| |
| /** Provider class for {@link MessageBundleInfo} objects. */ |
| private static class Provider extends StarlarkProviderWrapper<MessageBundleInfo> { |
| private Provider() { |
| super( |
| Label.parseCanonicalUnchecked("@_builtins//:common/java/message_bundle_info.bzl"), |
| STARLARK_NAME); |
| } |
| |
| @Override |
| public MessageBundleInfo wrap(Info value) throws RuleErrorException { |
| try { |
| return new MessageBundleInfo((StarlarkInfo) value); |
| } catch (EvalException e) { |
| throw new RuleErrorException(e); |
| } |
| } |
| } |
| |
| private final ImmutableList<Artifact> messages; |
| |
| private MessageBundleInfo(StarlarkInfo value) throws EvalException { |
| this.messages = |
| Sequence.cast(value.getValue("messages"), Artifact.class, "messages").getImmutableList(); |
| } |
| |
| private ImmutableList<Artifact> getMessages() { |
| return messages; |
| } |
| |
| @Nullable |
| public static ImmutableList<Artifact> getMessages(TransitiveInfoCollection info) |
| throws RuleErrorException { |
| MessageBundleInfo messageBundleInfo = info.get(MessageBundleInfo.PROVIDER); |
| if (messageBundleInfo != null) { |
| return messageBundleInfo.getMessages(); |
| } |
| return null; |
| } |
| } |