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// 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.auto.value.AutoValue;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.analysis.TransitiveInfoProvider;
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.skyframe.serialization.autocodec.AutoCodec;
import java.util.ArrayList;
import java.util.List;
/** Provider for users of Java plugins. */
@AutoCodec
@Immutable
@AutoValue
public abstract class JavaPluginInfoProvider implements TransitiveInfoProvider {
/** Information about a Java plugin, except for whether it generates API. */
@AutoCodec
@Immutable
@AutoValue
public abstract static class JavaPluginInfo {
public static JavaPluginInfo create(
NestedSet<String> processorClasses, NestedSet<Artifact> processorClasspath) {
return new AutoValue_JavaPluginInfoProvider_JavaPluginInfo(
processorClasses, processorClasspath);
}
@AutoCodec.Instantiator
public static JavaPluginInfo empty() {
return create(
NestedSetBuilder.emptySet(Order.NAIVE_LINK_ORDER),
NestedSetBuilder.emptySet(Order.NAIVE_LINK_ORDER));
}
public static JavaPluginInfo merge(Iterable<JavaPluginInfo> plugins) {
NestedSetBuilder<String> processorClasses = NestedSetBuilder.naiveLinkOrder();
NestedSetBuilder<Artifact> processorClasspath = NestedSetBuilder.naiveLinkOrder();
for (JavaPluginInfo plugin : plugins) {
processorClasses.addTransitive(plugin.processorClasses());
processorClasspath.addTransitive(plugin.processorClasspath());
}
return create(processorClasses.build(), processorClasspath.build());
}
/**
* Returns the class that should be passed to javac in order to run the annotation processor
* this class represents.
*/
public abstract NestedSet<String> processorClasses();
/** Returns the artifacts to add to the runtime classpath for this plugin. */
public abstract NestedSet<Artifact> processorClasspath();
public boolean isEmpty() {
return processorClasses().isEmpty() && processorClasspath().isEmpty();
}
}
public static JavaPluginInfoProvider merge(Iterable<JavaPluginInfoProvider> providers) {
List<JavaPluginInfo> plugins = new ArrayList<>();
List<JavaPluginInfo> apiGeneratingPlugins = new ArrayList<>();
for (JavaPluginInfoProvider provider : providers) {
plugins.add(provider.plugins());
apiGeneratingPlugins.add(provider.apiGeneratingPlugins());
}
return new AutoValue_JavaPluginInfoProvider(
JavaPluginInfo.merge(plugins), JavaPluginInfo.merge(apiGeneratingPlugins));
}
public static JavaPluginInfoProvider create(JavaPluginInfo javaPluginInfo, Boolean generatesApi) {
return new AutoValue_JavaPluginInfoProvider(
javaPluginInfo, generatesApi ? javaPluginInfo : JavaPluginInfo.empty());
}
@AutoCodec.Instantiator
public static JavaPluginInfoProvider empty() {
return new AutoValue_JavaPluginInfoProvider(JavaPluginInfo.empty(), JavaPluginInfo.empty());
}
public abstract JavaPluginInfo plugins();
public abstract JavaPluginInfo apiGeneratingPlugins();
public boolean isEmpty() {
// apiGeneratingPlugins is a subset of plugins, so checking if plugins is empty is sufficient
return plugins().isEmpty();
}
}
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