}

    private Fingerprint(byte[] fingerprint) {
        this.fingerprint = fingerprint;
        this.hashCode = Arrays.hashCode(fingerprint);
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder(2 * fingerprint.length);
        for (byte b : fingerprint) {
            sb.append(HEX_DIGITS[(b >> 4) & 0xf]).append(HEX_DIGITS[b & 0xf]);
        }

Monica Song <******@****.***> 1668556809 -0800

Adam Cogdell <******@****.***> 1686259943 -0700

        def fileCollectionFingerprint = fingerprinter.fingerprint(files(classpath))
        return fileCollectionFingerprint.fingerprints.collect { String path, FileSystemLocationFingerprint fingerprint ->
            [new File(path).getName(), fingerprint.normalizedPath, fingerprint.normalizedContentHash.toString()]
        }
    }

    def files(File... files) {
        return TestFiles.fixed(files)
    }

import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSortedMap;
import org.gradle.internal.execution.UnitOfWork.InputVisitor;
import org.gradle.internal.fingerprint.CurrentFileCollectionFingerprint;
import org.gradle.internal.fingerprint.FileCollectionFingerprint;
import org.gradle.internal.snapshot.ValueSnapshot;

import java.util.function.Consumer;

public interface InputFingerprinter {

import org.gradle.internal.fingerprint.CurrentFileCollectionFingerprint;
import org.gradle.internal.fingerprint.FileNormalizer;
import org.gradle.internal.fingerprint.FingerprintingStrategy;
import org.gradle.internal.fingerprint.impl.AbsolutePathFingerprintingStrategy;
import org.gradle.internal.fingerprint.impl.IgnoredPathFingerprintingStrategy;
import org.gradle.internal.fingerprint.impl.NameOnlyFingerprintingStrategy;

        changes(
            ["one-new": fingerprint("one"), "two-new": fingerprint("two"), "four-new": fingerprint("four")],
            ["one-old": fingerprint("one"), "three-old": fingerprint("three"), "four-old": fingerprint("four")]
        ) == [removed("three-old": "three"), added("two-new": "two")]
    }

    def "reordering"() {
        expect:
        changes(

    /**
     * The type used to refer to this fingerprinter in the {@link FileCollectionFingerprinterRegistry}.
     */
    FileNormalizer getNormalizer();

    /**
     * Creates a fingerprint of the contents of the given collection.
     */
    CurrentFileCollectionFingerprint fingerprint(FileCollection files);

    /**
     * Creates a fingerprint from the snapshot of a file collection.
     */

        ImmutableMap.Builder<String, FileSystemLocationFingerprint> fingerprints = ImmutableMap.builderWithExpectedSize(fingerprintCount);
        for (int i = 0; i < fingerprintCount; i++) {
            String absolutePath = stringInterner.intern(decoder.readString());
            FileSystemLocationFingerprint fingerprint = readFingerprint(decoder);
            fingerprints.put(absolutePath, fingerprint);
        }
        return fingerprints.build();
    }

import org.gradle.internal.fingerprint.FileSystemLocationFingerprint;
import org.gradle.internal.fingerprint.FingerprintHashingStrategy;
import org.gradle.internal.fingerprint.hashing.ConfigurableNormalizer;
import org.gradle.internal.fingerprint.hashing.RegularFileSnapshotContext;
import org.gradle.internal.fingerprint.hashing.RegularFileSnapshotContextHasher;
import org.gradle.internal.fingerprint.hashing.ResourceHasher;