// license that can be found in the LICENSE file.

package maphash_test

import (
	"fmt"
	"hash/maphash"
)

func Example() {
	// The zero Hash value is valid and ready to use; setting an
	// initial seed is not necessary.
	var h maphash.Hash

	// Add a string to the hash, and print the current hash value.
	h.WriteString("hello, ")
	fmt.Printf("%#x\n", h.Sum64())

 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

/*
 * SipHash-c-d was designed by Jean-Philippe Aumasson and Daniel J. Bernstein and is described in
 * "SipHash: a fast short-input PRF" (available at https://131002.net/siphash/siphash.pdf).
 */

package com.google.common.hash;

import static com.google.common.base.Preconditions.checkArgument;

        DefaultScriptClassPathResolver.InstrumentationPhase toPhase
    ) {
        dependencyHandler.registerTransform(
            transform,
            spec -> {
                spec.getFrom().attribute(INSTRUMENTED_ATTRIBUTE, fromPhase.getValue());
                spec.getTo().attribute(INSTRUMENTED_ATTRIBUTE, toPhase.getValue());
                spec.parameters(params -> {

go get use
cmp go.sum go.sum.tidy
go build -n use

# If we delete the hash *and* the ziphash file, we should see the same behavior.
cp go.sum.bug go.sum
rm $WORK/gopath/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.2.ziphash
! go build -n use
stderr '^use.go:3:8: missing go.sum entry for module providing package rsc.io/quote \(imported by use\); to add:\n\tgo get use$'
go get use

				t.Errorf("%s: %v", test.m, err)
			}
			zipHash := hex.EncodeToString(h.Sum(nil))
			if zipHash != test.wantFileHash {
				if *updateTestData {
					t.Logf("%s: updating zip file hash to %s", test.m, zipHash)
					test.wantFileHash = zipHash
					needUpdate = true
				} else {
					t.Errorf("%s: got zip file hash %s; want hash %s (but content sum matches)", test.m, zipHash, test.wantFileHash)
				}
			}
		})
	}

            if (resourceHash.equals(NO_HASH)) {
                return null;
            }
            return resourceHash;
        }

        resourceHash = hashCodeSupplier.get();

        if (resourceHash != null) {
            indexedCache.put(resourceHashCacheKey, resourceHash);
        } else {
            indexedCache.put(resourceHashCacheKey, NO_HASH);
        }
        return resourceHash;
    }

            this.artifact = ArtifactUtils.copyArtifact(artifact);
            if ("pom".equals(artifact.getType()) && file != null) {
                pomHash = file.getPath().hashCode() + file.lastModified();
            } else {
                pomHash = 0;
            }
            this.resolveManagedVersions = resolveManagedVersions;
            this.repositories.add(localRepository);

        try {
            return doHash(inputStream, ByteStreams.nullOutputStream());
        } catch (IOException e) {
            throw new UncheckedIOException("Failed to create MD5 hash for file content.", e);
        }
    }

    @Override
    public HashCode hashCopy(InputStream inputStream, OutputStream outputStream) throws IOException {
        return doHash(inputStream, outputStream);
    }

     */
    abstract Optional<HashCode> tryHash(RegularFileSnapshotContext snapshotContext);

    /**
     * Try to hash the resource, and signal for fallback if it can't be hashed.
     *
     * @return An Optional containing the hash, or an empty Optional if fallback should be triggered
     */
    abstract Optional<HashCode> tryHash(ZipEntryContext zipEntryContext);

	if !fs.ValidPath(path) {
		return "", errInvalidPath
	}
	return localize(path)
}

// ToSlash is filepath.ToSlash.
func ToSlash(path string) string {
	if Separator == '/' {
		return path
	}
	return replaceStringByte(path, Separator, '/')
}

// FromSlash is filepath.ToSlash.
func FromSlash(path string) string {
	if Separator == '/' {
		return path
	}