// 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.ImmutableSet;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.analysis.RuleConfiguredTargetBuilder;
import com.google.devtools.build.lib.analysis.RuleContext;
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.packages.RuleClass.ConfiguredTargetFactory.RuleErrorException;
import com.google.devtools.build.lib.rules.RuleConfiguredTargetFactory;
import com.google.devtools.build.lib.syntax.Type;
/**
* Implementation for the java_plugin rule.
*/
public class JavaPlugin implements RuleConfiguredTargetFactory {
private final JavaSemantics semantics;
protected JavaPlugin(JavaSemantics semantics) {
this.semantics = semantics;
}
@Override
public final ConfiguredTarget create(RuleContext ruleContext)
throws InterruptedException, RuleErrorException {
JavaLibrary javaLibrary = new JavaLibrary(semantics);
JavaCommon common = new JavaCommon(ruleContext, semantics);
RuleConfiguredTargetBuilder builder =
javaLibrary.init(ruleContext, common, true /* includeGeneratedExtensionRegistry */);
if (builder == null) {
return null;
}
ImmutableSet<String> processorClasses = getProcessorClasses(ruleContext);
NestedSet<Artifact> processorClasspath = common.getRuntimeClasspath();
ImmutableSet<String> apiGeneratingProcessorClasses;
NestedSet<Artifact> apiGeneratingProcessorClasspath;
if (ruleContext.attributes().get("generates_api", Type.BOOLEAN)) {
apiGeneratingProcessorClasses = processorClasses;
apiGeneratingProcessorClasspath = processorClasspath;
} else {
apiGeneratingProcessorClasses = ImmutableSet.of();
apiGeneratingProcessorClasspath = NestedSetBuilder.emptySet(Order.NAIVE_LINK_ORDER);
}
builder.addProvider(
new JavaPluginInfoProvider(
processorClasses,
processorClasspath,
apiGeneratingProcessorClasses,
apiGeneratingProcessorClasspath));
return builder.build();
}
/**
* Returns the class that should be passed to javac in order to run the annotation processor this
* class represents.
*/
private static ImmutableSet<String> getProcessorClasses(RuleContext ruleContext) {
if (ruleContext.getRule().isAttributeValueExplicitlySpecified("processor_class")) {
return ImmutableSet.of(ruleContext.attributes().get("processor_class", Type.STRING));
}
return ImmutableSet.of();
}
}