1/*
 2Copyright 2023 The logr Authors.
 3
 4Licensed under the Apache License, Version 2.0 (the "License");
 5you may not use this file except in compliance with the License.
 6You may obtain a copy of the License at
 7
 8    http://www.apache.org/licenses/LICENSE-2.0
 9
10Unless required by applicable law or agreed to in writing, software
11distributed under the License is distributed on an "AS IS" BASIS,
12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13See the License for the specific language governing permissions and
14limitations under the License.
15*/
16
17package logr
18
19// contextKey is how we find Loggers in a context.Context. With Go < 1.21,
20// the value is always a Logger value. With Go >= 1.21, the value can be a
21// Logger value or a slog.Logger pointer.
22type contextKey struct{}
23
24// notFoundError exists to carry an IsNotFound method.
25type notFoundError struct{}
26
27func (notFoundError) Error() string {
28	return "no logr.Logger was present"
29}
30
31func (notFoundError) IsNotFound() bool {
32	return true
33}