mirror of
https://github.com/IBM/fp-go.git
synced 2025-07-03 00:47:05 +02:00
46 lines
1.6 KiB
Go
46 lines
1.6 KiB
Go
// Copyright (c) 2024 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 (
|
|
"github.com/IBM/fp-go/internal/monad"
|
|
O "github.com/IBM/fp-go/option"
|
|
T "github.com/IBM/fp-go/tuple"
|
|
)
|
|
|
|
type iteratorMonad[A, B any, GA ~func() O.Option[T.Tuple2[GA, A]], GB ~func() O.Option[T.Tuple2[GB, B]], GAB ~func() O.Option[T.Tuple2[GAB, func(A) B]]] struct{}
|
|
|
|
func (o *iteratorMonad[A, B, GA, GB, GAB]) Of(a A) GA {
|
|
return Of[GA, A](a)
|
|
}
|
|
|
|
func (o *iteratorMonad[A, B, GA, GB, GAB]) Map(f func(A) B) func(GA) GB {
|
|
return Map[GB, GA, func(A) B, A, B](f)
|
|
}
|
|
|
|
func (o *iteratorMonad[A, B, GA, GB, GAB]) Chain(f func(A) GB) func(GA) GB {
|
|
return Chain[GB, GA, A, B](f)
|
|
}
|
|
|
|
func (o *iteratorMonad[A, B, GA, GB, GAB]) Ap(fa GA) func(GAB) GB {
|
|
return Ap[GAB, GB, GA, A, B](fa)
|
|
}
|
|
|
|
// Monad implements the monadic operations for iterators
|
|
func Monad[A, B any, GA ~func() O.Option[T.Tuple2[GA, A]], GB ~func() O.Option[T.Tuple2[GB, B]], GAB ~func() O.Option[T.Tuple2[GAB, func(A) B]]]() monad.Monad[A, B, GA, GB, GAB] {
|
|
return &iteratorMonad[A, B, GA, GB, GAB]{}
|
|
}
|