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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.pkgcache;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.cmdline.PackageIdentifier;
import com.google.devtools.build.lib.cmdline.RepositoryName;
import com.google.devtools.build.lib.events.EventHandler;
import com.google.devtools.build.lib.packages.NoSuchPackageException;
import com.google.devtools.build.lib.packages.Package;
import com.google.devtools.build.lib.vfs.PathFragment;
import com.google.devtools.build.lib.vfs.RootedPath;
import java.util.Map;
/**
* Support for resolving {@code package/...} target patterns.
*/
public interface RecursivePackageProvider extends PackageProvider {
/**
* Returns the names of all the packages under a given directory.
*
* <p>Packages returned by this method and passed into {@link #bulkGetPackages(EventHandler,
* Iterable)} are expected to return successful {@link Package} values.
*
* @param directory a {@link RootedPath} specifying the directory to search
* @param excludedSubdirectories a set of {@link PathFragment}s, all of which are beneath {@code
* directory}, specifying transitive subdirectories to exclude
*/
Iterable<PathFragment> getPackagesUnderDirectory(
RepositoryName repository,
PathFragment directory,
ImmutableSet<PathFragment> excludedSubdirectories)
throws InterruptedException;
/**
* Returns the {@link Package} corresponding to each Package in "pkgIds". If any of the packages
* does not exist (e.g. {@code isPackage(pkgIds)} returns false), throws a
* {@link NoSuchPackageException}.
*
* <p>The returned package may contain lexical/grammatical errors, in which case
* <code>pkg.containsErrors() == true</code>. Such packages may be missing some rules. Any rules
* that are present may soundly be used for builds, though.
*
* @param eventHandler the eventHandler on which to report warning and errors; if the package
* has been loaded by another thread, this eventHandler won't see any warnings or errors
* @param pkgIds an Iterable of PackageIdentifier objects.
* @throws NoSuchPackageException if any package could not be found.
* @throws InterruptedException if the package loading was interrupted.
*/
Map<PackageIdentifier, Package> bulkGetPackages(EventHandler eventHandler,
Iterable<PackageIdentifier> pkgIds) throws NoSuchPackageException, InterruptedException;
}
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