/*
* Copyright 2012-present Facebook, Inc.
*
* 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.facebook.buck.android;
import com.facebook.buck.graph.AbstractBreadthFirstTraversal;
import com.facebook.buck.rules.BuildRule;
import com.facebook.buck.rules.SourcePath;
import com.facebook.buck.util.Optionals;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSortedSet;
import java.util.Set;
public class AndroidTransitiveDependencyGraph {
private final ImmutableSortedSet<BuildRule> rulesToTraverseForTransitiveDeps;
/**
* @param deps A set of dependencies for a {@link BuildRule}, presumably one that is in the
* process of being constructed via its builder.
*/
AndroidTransitiveDependencyGraph(ImmutableSortedSet<BuildRule> deps) {
this.rulesToTraverseForTransitiveDeps = deps;
}
public ImmutableSet<SourcePath> findManifestFiles() {
final ImmutableSet.Builder<SourcePath> manifestFiles = ImmutableSet.builder();
new AbstractBreadthFirstTraversal<BuildRule>(rulesToTraverseForTransitiveDeps) {
@Override
public Set<BuildRule> visit(BuildRule rule) {
Set<BuildRule> deps;
if (rule instanceof AndroidResource) {
AndroidResource androidRule = (AndroidResource) rule;
SourcePath manifestFile = androidRule.getManifestFile();
if (manifestFile != null) {
manifestFiles.add(manifestFile);
}
deps = androidRule.getDeclaredDeps();
} else if (rule instanceof AndroidLibrary) {
AndroidLibrary androidLibraryRule = (AndroidLibrary) rule;
Optionals.addIfPresent(androidLibraryRule.getManifestFile(), manifestFiles);
deps = androidLibraryRule.getDepsForTransitiveClasspathEntries();
} else {
deps = ImmutableSet.of();
}
return deps;
}
}.start();
return manifestFiles.build();
}
}