// 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.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.analysis.FileProvider;
import com.google.devtools.build.lib.analysis.TransitiveInfoCollection;
import com.google.devtools.build.lib.collect.nestedset.NestedSet;
import com.google.devtools.build.lib.collect.nestedset.NestedSetBuilder;
import com.google.devtools.build.lib.rules.cpp.ArtifactCategory;
import com.google.devtools.build.lib.rules.cpp.CcNativeLibraryProvider;
import com.google.devtools.build.lib.rules.cpp.CppFileTypes;
import com.google.devtools.build.lib.rules.cpp.LinkerInput;
import com.google.devtools.build.lib.rules.cpp.LinkerInputs;
import com.google.devtools.build.lib.util.FileType;
/**
* A builder that helps construct nested sets of native libraries.
*/
public final class NativeLibraryNestedSetBuilder {
private final NestedSetBuilder<LinkerInput> builder = NestedSetBuilder.linkOrder();
/**
* Build a nested set of native libraries.
*/
public NestedSet<LinkerInput> build() {
return builder.build();
}
/**
* Include specified artifacts as native libraries in the nested set.
*/
public NativeLibraryNestedSetBuilder addAll(Iterable<Artifact> deps) {
for (Artifact dep : deps) {
builder.add(new LinkerInputs.SimpleLinkerInput(dep, ArtifactCategory.DYNAMIC_LIBRARY));
}
return this;
}
/**
* Include native libraries of specified dependencies into the nested set.
*/
public NativeLibraryNestedSetBuilder addJavaTargets(
Iterable<? extends TransitiveInfoCollection> deps) {
for (TransitiveInfoCollection dep : deps) {
addJavaTarget(dep);
}
return this;
}
/**
* Include native Java libraries of a specified target into the nested set.
*/
public NativeLibraryNestedSetBuilder addJavaTarget(TransitiveInfoCollection dep) {
JavaNativeLibraryProvider javaProvider = dep.getProvider(JavaNativeLibraryProvider.class);
if (javaProvider != null) {
builder.addTransitive(javaProvider.getTransitiveJavaNativeLibraries());
return this;
}
CcNativeLibraryProvider ccProvider = dep.getProvider(CcNativeLibraryProvider.class);
if (ccProvider != null) {
builder.addTransitive(ccProvider.getTransitiveCcNativeLibraries());
return this;
}
addTarget(dep);
return this;
}
/**
* Include native C/C++ libraries of specified dependencies into the nested set.
*/
public NativeLibraryNestedSetBuilder addCcTargets(
Iterable<? extends TransitiveInfoCollection> deps) {
for (TransitiveInfoCollection dep : deps) {
addCcTarget(dep);
}
return this;
}
/**
* Include native Java libraries of a specified target into the nested set.
*/
private void addCcTarget(TransitiveInfoCollection dep) {
CcNativeLibraryProvider provider = dep.getProvider(CcNativeLibraryProvider.class);
if (provider != null) {
builder.addTransitive(provider.getTransitiveCcNativeLibraries());
} else {
addTarget(dep);
}
}
/**
* Include files and genrule artifacts.
*/
private void addTarget(TransitiveInfoCollection dep) {
for (Artifact artifact : FileType.filterList(
dep.getProvider(FileProvider.class).getFilesToBuild(),
CppFileTypes.SHARED_LIBRARY)) {
builder.add(new LinkerInputs.SimpleLinkerInput(artifact, ArtifactCategory.DYNAMIC_LIBRARY));
}
}
}