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// Copyright (C) 2023 Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later
package btrfstree
import (
iofs "io/fs"
)
// For both ErrNoItem and ErrNoTree, `errors.Is(err,
// io/fs.ErrNotExist)` returns true.
var (
ErrNoItem = errNotExist("item")
ErrNoTree = errNotExist("tree")
)
func errNotExist(thing string) error {
return ¬ExistError{thing}
}
type notExistError struct {
thing string
}
func (e *notExistError) Error() string {
return e.thing + " does not exist"
}
func (*notExistError) Is(target error) bool {
return target == iofs.ErrNotExist
}
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