/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
 *
 *   https://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 fields

import "context"

// EnsureType is used to convert from one (any,error) to (T, error)
func EnsureType[T any](r any, err error) func(context.Context) (T, error) {
	return func(ctx context.Context) (T, error) {
		if err != nil {
			var zero T
			return zero, err
		}
		var zero T
		if r == nil {
			return zero, nil
		}
		return r.(T), nil
	}
}

// GetRef returns a ref to T
func GetRef[T any](v T) *T {
	return &v
}
