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// Copyright 2014 Google Inc. 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;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.syntax.SkylarkCallable;
import com.google.devtools.build.lib.syntax.SkylarkModule;
import com.google.devtools.build.lib.util.FileType;
import com.google.devtools.build.lib.util.FileTypeSet;
import java.util.List;
/**
* A wrapper class for FileType and FileTypeSet functionality in Skylark.
*/
@SkylarkModule(name = "FileType",
doc = "File type for file filtering. Can be used to filter collections of labels for certain "
+ "file types.")
public class SkylarkFileType {
private final FileType fileType;
private SkylarkFileType(FileType fileType) {
this.fileType = fileType;
}
public static SkylarkFileType of(Iterable<String> extensions) {
return new SkylarkFileType(FileType.of(extensions));
}
public FileTypeSet getFileTypeSet() {
return FileTypeSet.of(fileType);
}
@SkylarkCallable(doc =
"Returns a list created from the elements of the parameter containing all the "
+ "<a href=\"#modules.File\"><code>File</code></a>s that match the FileType. The parameter "
+ "must be a <a href=\"#modules.set\"><code>set</code></a> or a "
+ "<a href=\"#modules.list\"><code>list</code></a>.")
public List<Artifact> filter(Iterable<Artifact> files) {
return ImmutableList.copyOf(FileType.filter(files, fileType));
}
@VisibleForTesting
public Object getExtensions() {
return fileType.getExtensions();
}
}
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