mirror of
https://github.com/IBM/fp-go.git
synced 2025-06-23 00:27:49 +02:00
49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
// Copyright (c) 2023 IBM Corp.
|
|
// All rights reserved.
|
|
//
|
|
// 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.
|
|
|
|
package either
|
|
|
|
import (
|
|
"log"
|
|
|
|
F "github.com/IBM/fp-go/function"
|
|
L "github.com/IBM/fp-go/logging"
|
|
)
|
|
|
|
func _log[E, A any](left func(string, ...any), right func(string, ...any), prefix string) func(Either[E, A]) Either[E, A] {
|
|
return Fold(
|
|
func(e E) Either[E, A] {
|
|
left("%s: %v", prefix, e)
|
|
return Left[A, E](e)
|
|
},
|
|
func(a A) Either[E, A] {
|
|
right("%s: %v", prefix, a)
|
|
return Right[E](a)
|
|
})
|
|
}
|
|
|
|
func Logger[E, A any](loggers ...*log.Logger) func(string) func(Either[E, A]) Either[E, A] {
|
|
left, right := L.LoggingCallbacks(loggers...)
|
|
return func(prefix string) func(Either[E, A]) Either[E, A] {
|
|
delegate := _log[E, A](left, right, prefix)
|
|
return func(ma Either[E, A]) Either[E, A] {
|
|
return F.Pipe1(
|
|
delegate(ma),
|
|
ChainTo[E, A](ma),
|
|
)
|
|
}
|
|
}
|
|
}
|