// Copyright 2019 Dolthub, Inc.
//
// 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.
//
// This file incorporates work covered by the following copyright and
// permission notice:
//
// Copyright 2016 Attic Labs, Inc. All rights reserved.
// Licensed under the Apache License, version 2.0:
// http://www.apache.org/licenses/LICENSE-2.0

package types

import "github.com/dolthub/dolt/go/store/hash"

var getHashOverride func(v Value) (hash.Hash, error)

func getHash(v Value, nbf *NomsBinFormat) (hash.Hash, error) {
	if getHashOverride != nil {
		return getHashOverride(v)
	}
	return getHashNoOverride(v, nbf)
}

func getHashNoOverride(v Value, nbf *NomsBinFormat) (hash.Hash, error) {
	val, err := EncodeValue(v, nbf)

	if err != nil {
		return hash.Hash{}, err
	}

	return val.Hash(), nil
}
