// 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.analysis; import com.google.common.collect.ImmutableSet; import com.google.devtools.build.lib.analysis.RuleConfiguredTarget.Mode; import com.google.devtools.build.lib.cmdline.Label; import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; import java.util.Set; /** * Transitive info provider for rules that behave differently when used from * different languages. * *
Most rules generate code for a particular language or are totally language independent. * Some rules, however, behave differently when depended upon from different languages. * They might generate different libraries when used from different languages (and with * different API versions). This interface allows code sharing between implementations. * *
This provider is not really a roll-up of transitive information. */ @Immutable public final class LanguageDependentFragment implements TransitiveInfoProvider { /** * A language that can be supported by a multi-language configured target. * *
Note that no {@code hashCode}/{@code equals} methods are provided, because these
* objects are expected to be compared for object identity, which is the default.
*/
public static final class LibraryLanguage {
private final String displayName;
public LibraryLanguage(String displayName) {
this.displayName = displayName;
}
@Override
public String toString() {
return displayName;
}
}
private final Label label;
private final ImmutableSet This is usually the label of the target that provides the information.
*/
public Label getLabel() {
return label;
}
/**
* Returns a set of the languages the ConfiguredTarget generates output for.
* For use only by rules that directly depend on this library via a "deps" attribute.
*/
public ImmutableSet