org.gradle.internal.fingerprint.CurrentFileCollectionFingerprint Maven / Gradle / Ivy

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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.internal.fingerprint;

import org.gradle.internal.change.Change;
import org.gradle.internal.change.ChangeVisitor;
import org.gradle.internal.hash.HashCode;
import org.gradle.internal.snapshot.FileSystemSnapshot;

/**
 * A file collection fingerprint taken during this build.
 */
public interface CurrentFileCollectionFingerprint extends FileCollectionFingerprint, FileSystemSnapshot {
    /**
     * Returns the combined hash of the contents of this {@link CurrentFileCollectionFingerprint}.
     */
    HashCode getHash();

    String getStrategyIdentifier();

    boolean isEmpty();

    /**
     * Visits the changes to file contents since the given fingerprint, subject to the given filters.
     *
     * @return Whether the {@link ChangeVisitor} is looking for further changes. See {@link ChangeVisitor#visitChange(Change)}.
     */
    boolean visitChangesSince(FileCollectionFingerprint oldFingerprint, String title, boolean includeAdded, ChangeVisitor visitor);

}