| // 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 static com.google.devtools.build.lib.packages.Attribute.attr; |
| import static com.google.devtools.build.lib.packages.BuildType.LABEL; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.analysis.RuleDefinition; |
| import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment; |
| import com.google.devtools.build.lib.analysis.config.HostTransition; |
| import com.google.devtools.build.lib.analysis.platform.ToolchainInfo; |
| import com.google.devtools.build.lib.packages.RuleClass; |
| import com.google.devtools.build.lib.packages.RuleClass.Builder.RuleClassType; |
| import com.google.devtools.build.lib.packages.SkylarkProviderIdentifier; |
| |
| /** Common rule class definitions for Java rules. */ |
| public class JavaRuleClasses { |
| |
| public static final String JAVA_TOOLCHAIN_ATTRIBUTE_NAME = "$java_toolchain"; |
| public static final String JAVA_RUNTIME_ATTRIBUTE_NAME = "$jvm"; |
| public static final String HOST_JAVA_RUNTIME_ATTRIBUTE_NAME = "$host_jdk"; |
| |
| /** Common attributes for rules that depend on ijar. */ |
| public static final class IjarBaseRule implements RuleDefinition { |
| |
| public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment env) { |
| return builder.setPreferredDependencyPredicate(JavaSemantics.JAVA_SOURCE).build(); |
| } |
| |
| @Override |
| public Metadata getMetadata() { |
| return RuleDefinition.Metadata.builder() |
| .name("$ijar_base_rule") |
| .type(RuleClassType.ABSTRACT) |
| .ancestors(JavaToolchainBaseRule.class) |
| .build(); |
| } |
| } |
| |
| /** Common attributes for rules that use the Java toolchain. */ |
| public static final class JavaToolchainBaseRule implements RuleDefinition { |
| @Override |
| public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment env) { |
| return builder |
| .add( |
| attr(JAVA_TOOLCHAIN_ATTRIBUTE_NAME, LABEL) |
| .useOutputLicenses() |
| .mandatoryProviders(ToolchainInfo.PROVIDER.id()) |
| .value(JavaSemantics.javaToolchainAttribute(env))) |
| .build(); |
| } |
| |
| @Override |
| public Metadata getMetadata() { |
| return RuleDefinition.Metadata.builder() |
| .name("$java_toolchain_base_rule") |
| .type(RuleClassType.ABSTRACT) |
| .build(); |
| } |
| } |
| |
| /** Common attributes for rules that use the Java runtime. */ |
| public static final class JavaRuntimeBaseRule implements RuleDefinition { |
| @Override |
| public RuleClass build(RuleClass.Builder builder, RuleDefinitionEnvironment env) { |
| return builder |
| .add( |
| attr(JAVA_RUNTIME_ATTRIBUTE_NAME, LABEL) |
| .value(JavaSemantics.jvmAttribute(env)) |
| .mandatoryProviders(ToolchainInfo.PROVIDER.id()) |
| .useOutputLicenses()) |
| .add( |
| attr(HOST_JAVA_RUNTIME_ATTRIBUTE_NAME, LABEL) |
| .cfg(HostTransition.INSTANCE) |
| .value(JavaSemantics.hostJdkAttribute(env)) |
| .mandatoryProviders(ToolchainInfo.PROVIDER.id())) |
| .build(); |
| } |
| |
| @Override |
| public Metadata getMetadata() { |
| return RuleDefinition.Metadata.builder() |
| .name("$java_runtime_toolchain_base_rule") |
| .type(RuleClassType.ABSTRACT) |
| .build(); |
| } |
| } |
| |
| /** |
| * Meant to be an element of {@code mandatoryProvidersLists} in order to accept rules providing a |
| * {@link JavaInfo} through an attribute. Other providers can be included in {@code |
| * mandatoryProvidersLists} as well. |
| */ |
| public static final ImmutableList<SkylarkProviderIdentifier> CONTAINS_JAVA_PROVIDER = |
| ImmutableList.of(SkylarkProviderIdentifier.forKey(JavaInfo.PROVIDER.getKey())); |
| } |