* limitations under the License.
 */

package org.gradle.internal.snapshot;

/**
 * Visitor for {@link FileSystemSnapshot}.
 */
public interface FileSystemSnapshotHierarchyVisitor {

    /**
     * Called before visiting the contents of a directory.
     */
    default void enterDirectory(DirectorySnapshot directorySnapshot) {}

    /**

        @Override
        public Stream<FileSystemLocationSnapshot> roots() {
            return Stream.empty();
        }

        @Override
        public SnapshotVisitResult accept(FileSystemSnapshotHierarchyVisitor visitor) {
            return SnapshotVisitResult.CONTINUE;
        }

        @Override

import org.gradle.internal.snapshot.DirectorySnapshot
import org.gradle.internal.snapshot.FileSystemLocationSnapshot
import org.gradle.internal.snapshot.FileSystemSnapshot
import org.gradle.internal.snapshot.FileSystemSnapshotHierarchyVisitor
import org.gradle.internal.snapshot.RegularFileSnapshot
import org.gradle.internal.snapshot.SnapshotVisitResult
import org.gradle.internal.snapshot.SnapshottingFilter
import org.gradle.internal.vfs.FileSystemAccess

import org.gradle.internal.hash.HashCode;
import org.gradle.internal.snapshot.DirectorySnapshot;
import org.gradle.internal.snapshot.FileSystemLocationSnapshot;
import org.gradle.internal.snapshot.FileSystemSnapshotHierarchyVisitor;
import org.gradle.internal.snapshot.SnapshotVisitResult;
import org.gradle.operations.execution.FilePropertyVisitor;

import java.util.ArrayDeque;
import java.util.Deque;
import java.util.Map;

 */
public interface FileSystemLeafSnapshot extends FileSystemLocationSnapshot {
    @Override
    default SnapshotVisitResult accept(FileSystemSnapshotHierarchyVisitor visitor) {
        return visitor.visitEntry(this);
    }

    @Override
    default SnapshotVisitResult accept(RelativePathTracker pathTracker, RelativePathTrackingFileSystemSnapshotHierarchyVisitor visitor) {

 * limitations under the License.
 */

package org.gradle.internal.snapshot;

public abstract class RootTrackingFileSystemSnapshotHierarchyVisitor implements FileSystemSnapshotHierarchyVisitor {
    private int treeDepth;

    /**
     * Called before visiting the contents of a directory.
     */
    public void enterDirectory(DirectorySnapshot directorySnapshot, boolean isRoot) {}

    public Stream<FileSystemLocationSnapshot> roots() {
        return snapshots.stream()
            .flatMap(FileSystemSnapshot::roots);
    }

    @Override
    public SnapshotVisitResult accept(FileSystemSnapshotHierarchyVisitor visitor) {
        for (FileSystemSnapshot snapshot : snapshots) {
            SnapshotVisitResult result = snapshot.accept(visitor);
            if (result == SnapshotVisitResult.TERMINATE) {

import org.gradle.internal.file.FileHierarchySet;
import org.gradle.internal.file.FileMetadata;
import org.gradle.internal.snapshot.FileSystemLocationSnapshot;
import org.gradle.internal.snapshot.FileSystemSnapshotHierarchyVisitor;
import org.gradle.internal.snapshot.SnapshotHierarchy;
import org.gradle.internal.snapshot.SnapshotVisitResult;
import org.gradle.internal.watch.registry.FileWatcherProbeRegistry;

    @Override
    public boolean isContentUpToDate(FileSystemLocationSnapshot other) {
        return other instanceof DirectorySnapshot;
    }

    @Override
    public SnapshotVisitResult accept(FileSystemSnapshotHierarchyVisitor visitor) {
        SnapshotVisitResult result = visitor.visitEntry(this);
        switch (result) {
            case CONTINUE:
                visitor.enterDirectory(this);
                children.stream()

                    def vfs = parameters.vfsService.get()
                    int filesInVfs = 0
                    vfs.root.rootSnapshots().forEach { snapshot ->
                        snapshot.accept(new FileSystemSnapshotHierarchyVisitor() {
                            @Override
                            SnapshotVisitResult visitEntry(FileSystemLocationSnapshot fileSnapshot) {