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fp-go/io/generic/traverse.go
Dr. Carsten Leue 7476b70a23 fix: add optics and consistent copyright
Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
2023-07-23 22:05:54 +02:00

72 lines
2.2 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 generic
import (
F "github.com/IBM/fp-go/function"
RA "github.com/IBM/fp-go/internal/array"
RR "github.com/IBM/fp-go/internal/record"
)
func MonadTraverseArray[GB ~func() B, GBS ~func() BBS, AAS ~[]A, BBS ~[]B, A, B any](tas AAS, f func(A) GB) GBS {
return RA.MonadTraverse(
Of[GBS, BBS],
Map[GBS, func() func(B) BBS, BBS, func(B) BBS],
Ap[GBS, func() func(B) BBS, GB],
tas,
f,
)
}
func TraverseArray[GB ~func() B, GBS ~func() BBS, AAS ~[]A, BBS ~[]B, A, B any](f func(A) GB) func(AAS) GBS {
return RA.Traverse[AAS](
Of[GBS, BBS],
Map[GBS, func() func(B) BBS, BBS, func(B) BBS],
Ap[GBS, func() func(B) BBS, GB],
f,
)
}
func SequenceArray[GA ~func() A, GAS ~func() AAS, AAS ~[]A, GAAS ~[]GA, A any](tas GAAS) GAS {
return MonadTraverseArray[GA, GAS](tas, F.Identity[GA])
}
// MonadTraverseRecord transforms a record using an IO transform an IO of a record
func MonadTraverseRecord[GB ~func() B, GBS ~func() MB, MA ~map[K]A, MB ~map[K]B, K comparable, A, B any](ma MA, f func(A) GB) GBS {
return RR.MonadTraverse[MA](
Of[GBS, MB],
Map[GBS, func() func(B) MB, MB, func(B) MB],
Ap[GBS, func() func(B) MB, GB],
ma, f,
)
}
// TraverseRecord transforms a record using an IO transform an IO of a record
func TraverseRecord[GB ~func() B, GBS ~func() MB, MA ~map[K]A, MB ~map[K]B, K comparable, A, B any](f func(A) GB) func(MA) GBS {
return RR.Traverse[MA](
Of[GBS, MB],
Map[GBS, func() func(B) MB, MB, func(B) MB],
Ap[GBS, func() func(B) MB, GB],
f,
)
}
func SequenceRecord[GA ~func() A, GAS ~func() AAS, AAS ~map[K]A, GAAS ~map[K]GA, K comparable, A any](tas GAAS) GAS {
return MonadTraverseRecord[GA, GAS](tas, F.Identity[GA])
}