| // Copyright 2020 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.common.collect.ImmutableMap; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.analysis.RuleContext; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.collect.nestedset.Depset; |
| 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.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.StarlarkInfoWithSchema; |
| import com.google.devtools.build.lib.packages.StarlarkProvider; |
| import com.google.devtools.build.lib.packages.StarlarkProviderWrapper; |
| import com.google.devtools.build.lib.packages.StructImpl; |
| import com.google.devtools.build.lib.vfs.PathFragment; |
| import java.util.Optional; |
| import net.starlark.java.eval.EvalException; |
| import net.starlark.java.eval.Starlark; |
| |
| /** Information about the system APIs for a Java compilation. */ |
| @Immutable |
| public class BootClassPathInfo extends StarlarkInfoWrapper { |
| |
| /** Provider singleton constant. */ |
| public static final StarlarkProviderWrapper<BootClassPathInfo> PROVIDER = new Provider(); |
| |
| private static final BootClassPathInfo EMPTY = |
| new BootClassPathInfo(null) { |
| @Override |
| public NestedSet<Artifact> bootclasspath() { |
| return NestedSetBuilder.emptySet(Order.STABLE_ORDER); |
| } |
| |
| @Override |
| public NestedSet<Artifact> auxiliary() { |
| return NestedSetBuilder.emptySet(Order.STABLE_ORDER); |
| } |
| |
| @Override |
| public NestedSet<Artifact> systemInputs() { |
| return NestedSetBuilder.emptySet(Order.STABLE_ORDER); |
| } |
| |
| @Override |
| public Optional<PathFragment> systemPath() { |
| return Optional.empty(); |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return true; |
| } |
| }; |
| |
| public static BootClassPathInfo empty() { |
| return EMPTY; |
| } |
| |
| public static BootClassPathInfo create(RuleContext ruleContext, NestedSet<Artifact> bootclasspath) |
| throws RuleErrorException, InterruptedException { |
| if (bootclasspath.isEmpty()) { |
| return empty(); |
| } |
| ruleContext.initStarlarkRuleContext(); |
| StructImpl javaCommon = (StructImpl) ruleContext.getStarlarkDefinedBuiltin("java_common"); |
| try { |
| StarlarkProvider starlarkProvider = |
| javaCommon.getValue("BootClassPathInfo", StarlarkProvider.class); |
| StarlarkInfo starlarkBootClassPathInfo = |
| (StarlarkInfo) |
| Starlark.call( |
| ruleContext.getStarlarkThread(), |
| starlarkProvider.createRawConstructor(), |
| ImmutableList.of(), |
| ImmutableMap.of("bootclasspath", Depset.of(Artifact.class, bootclasspath))); |
| return PROVIDER.wrap(starlarkBootClassPathInfo); |
| } catch (EvalException e) { |
| throw new RuleErrorException(e); |
| } |
| } |
| |
| private BootClassPathInfo(StructImpl underlying) { |
| super(underlying); |
| } |
| |
| /** The jar files containing classes for system APIs, i.e. a Java <= 8 bootclasspath. */ |
| public NestedSet<Artifact> bootclasspath() throws RuleErrorException { |
| return getUnderlyingNestedSet("bootclasspath", Artifact.class); |
| } |
| |
| /** |
| * The jar files containing extra classes for system APIs that should not be put in the system |
| * image to support split-package compilation scenarios. |
| */ |
| public NestedSet<Artifact> auxiliary() throws RuleErrorException { |
| return getUnderlyingNestedSet("_auxiliary", Artifact.class); |
| } |
| |
| /** Contents of the directory that is passed to the javac >= 9 {@code --system} flag. */ |
| public NestedSet<Artifact> systemInputs() throws RuleErrorException { |
| return getUnderlyingNestedSet("_system_inputs", Artifact.class); |
| } |
| |
| /** An argument to the javac >= 9 {@code --system} flag. */ |
| public Optional<PathFragment> systemPath() throws RuleErrorException { |
| return Optional.ofNullable(getUnderlyingValue("_system_path", String.class)) |
| .map(PathFragment::create); |
| } |
| |
| public boolean isEmpty() throws RuleErrorException { |
| return bootclasspath().isEmpty() |
| && auxiliary().isEmpty() |
| && systemInputs().isEmpty() |
| && systemPath().isEmpty(); |
| } |
| |
| private static class Provider extends StarlarkProviderWrapper<BootClassPathInfo> { |
| private Provider() { |
| super( |
| Label.parseCanonicalUnchecked("@_builtins//:common/java/boot_class_path_info.bzl"), |
| "BootClassPathInfo"); |
| } |
| |
| @Override |
| public BootClassPathInfo wrap(Info value) throws RuleErrorException { |
| if (value instanceof StarlarkInfoWithSchema |
| && value.getProvider().getKey().equals(getKey())) { |
| return new BootClassPathInfo((StarlarkInfo) value); |
| } else { |
| throw new RuleErrorException( |
| "got value of type '" + Starlark.type(value) + "', want 'BootClassPathInfo'"); |
| } |
| } |
| } |
| } |