| // Copyright 2017 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.devtools.build.lib.analysis.RuleDefinitionEnvironment; |
| import com.google.devtools.build.lib.analysis.platform.ToolchainInfo; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.packages.Attribute; |
| import com.google.devtools.build.lib.packages.Attribute.LabelLateBoundDefault; |
| import com.google.devtools.build.lib.rules.LateBoundAlias.CommonAliasRule; |
| import java.io.Serializable; |
| |
| /** Implementation of the {@code java_runtime_alias} rule. */ |
| public class JavaRuntimeAliasRule extends CommonAliasRule<JavaConfiguration> { |
| public JavaRuntimeAliasRule() { |
| super("java_runtime_alias", JavaRuntimeAliasRule::jvmAttribute, JavaConfiguration.class); |
| } |
| |
| @Override |
| protected Attribute.Builder<Label> makeAttribute(RuleDefinitionEnvironment environment) { |
| Attribute.Builder<Label> builder = super.makeAttribute(environment); |
| return builder.mandatoryProviders(ToolchainInfo.PROVIDER.id()); |
| } |
| |
| static LabelLateBoundDefault<JavaConfiguration> jvmAttribute(RuleDefinitionEnvironment env) { |
| return LabelLateBoundDefault.fromTargetConfiguration( |
| JavaConfiguration.class, |
| env.getToolsLabel(JavaImplicitAttributes.JDK_LABEL), |
| (Attribute.LateBoundDefault.Resolver<JavaConfiguration, Label> & Serializable) |
| (rule, attributes, configuration) -> configuration.getRuntimeLabel()); |
| } |
| } |