// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package derrors defines internal error values to categorize the different
// types error semantics supported by x/vuln.
package derrors

import (
	"fmt"
)

// Wrap adds context to the error and allows
// unwrapping the result to recover the original error.
//
// Example:
//
//	defer derrors.Wrap(&err, "copy(%s, %s)", dst, src)
func Wrap(errp *error, format string, args ...interface{}) {
	if *errp != nil {
		*errp = fmt.Errorf("%s: %w", fmt.Sprintf(format, args...), *errp)
	}
}