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AbstractSingletonFileTree.java
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AbstractSingletonFileTree.java
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/*
* Copyright 2018 the original author or authors.
*
* 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 org.gradle.api.internal.file.collections;
import org.gradle.api.file.FileVisitDetails;
import org.gradle.api.file.FileVisitor;
import org.gradle.api.tasks.util.PatternFilterable;
import org.gradle.api.tasks.util.PatternSet;
public abstract class AbstractSingletonFileTree implements SingletonFileTree, PatternFilterableFileTree, FileSystemMirroringFileTree {
private final PatternSet patterns;
protected AbstractSingletonFileTree(PatternSet patterns) {
this.patterns = patterns;
}
protected abstract FileVisitDetails createFileVisitDetails();
public void visit(FileVisitor visitor) {
FileVisitDetails fileVisitDetails = createFileVisitDetails();
if (patterns.isEmpty() || patterns.getAsSpec().isSatisfiedBy(fileVisitDetails)) {
visitor.visitFile(fileVisitDetails);
}
}
@Override
public PatternSet getPatterns() {
return patterns;
}
@Override
public void visitTreeOrBackingFile(FileVisitor visitor) {
visit(visitor);
}
protected PatternSet filterPatternSet(PatternFilterable patterns) {
PatternSet patternSet = this.patterns.intersect();
patternSet.copyFrom(patterns);
return patternSet;
}
@Override
public DirectoryFileTree getMirror() {
return new FileBackedDirectoryFileTree(getFile()).filter(patterns);
}
}