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fp-go/readerio/generic/reader.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

102 lines
4.3 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"
FR "github.com/IBM/fp-go/internal/fromreader"
"github.com/IBM/fp-go/internal/readert"
IO "github.com/IBM/fp-go/io/generic"
R "github.com/IBM/fp-go/reader/generic"
)
func FromIO[GEA ~func(E) GIOA, GIOA ~func() A, E, A any](t GIOA) GEA {
return R.Of[GEA, E](t)
}
func FromReader[GA ~func(E) A, GEA ~func(E) GIOA, GIOA ~func() A, E, A any](r GA) GEA {
return readert.MonadFromReader[GA, GEA](IO.Of[GIOA, A], r)
}
func MonadMap[GEA ~func(E) GIOA, GEB ~func(E) GIOB, GIOA ~func() A, GIOB ~func() B, E, A, B any](fa GEA, f func(A) B) GEB {
return readert.MonadMap[GEA, GEB](IO.MonadMap[GIOA, GIOB, A, B], fa, f)
}
func Map[GEA ~func(E) GIOA, GEB ~func(E) GIOB, GIOA ~func() A, GIOB ~func() B, E, A, B any](f func(A) B) func(GEA) GEB {
return F.Bind2nd(MonadMap[GEA, GEB, GIOA, GIOB, E, A, B], f)
}
func MonadChain[GEA ~func(E) GIOA, GEB ~func(E) GIOB, GIOA ~func() A, GIOB ~func() B, E, A, B any](ma GEA, f func(A) GEB) GEB {
return readert.MonadChain(IO.MonadChain[GIOA, GIOB, A, B], ma, f)
}
func Chain[GEA ~func(E) GIOA, GEB ~func(E) GIOB, GIOA ~func() A, GIOB ~func() B, E, A, B any](f func(A) GEB) func(GEA) GEB {
return F.Bind2nd(MonadChain[GEA, GEB, GIOA, GIOB, E, A, B], f)
}
func Of[GEA ~func(E) GIOA, GIOA ~func() A, E, A any](a A) GEA {
return readert.MonadOf[GEA](IO.Of[GIOA, A], a)
}
func MonadAp[GEA ~func(E) GIOA, GEB ~func(E) GIOB, GEFAB ~func(E) GIOFAB, GIOA ~func() A, GIOB ~func() B, GIOFAB ~func() func(A) B, E, A, B any](fab GEFAB, fa GEA) GEB {
return readert.MonadAp[GEA, GEB, GEFAB, E, A](IO.MonadAp[GIOA, GIOB, GIOFAB, A, B], fab, fa)
}
func Ap[GEA ~func(E) GIOA, GEB ~func(E) GIOB, GEFAB ~func(E) GIOFAB, GIOA ~func() A, GIOB ~func() B, GIOFAB ~func() func(A) B, E, A, B any](fa GEA) func(GEFAB) GEB {
return F.Bind2nd(MonadAp[GEA, GEB, GEFAB, GIOA, GIOB, GIOFAB, E, A, B], fa)
}
func MonadApSeq[GEA ~func(E) GIOA, GEB ~func(E) GIOB, GEFAB ~func(E) GIOFAB, GIOA ~func() A, GIOB ~func() B, GIOFAB ~func() func(A) B, E, A, B any](fab GEFAB, fa GEA) GEB {
return readert.MonadAp[GEA, GEB, GEFAB, E, A](IO.MonadApSeq[GIOA, GIOB, GIOFAB, A, B], fab, fa)
}
func ApSeq[GEA ~func(E) GIOA, GEB ~func(E) GIOB, GEFAB ~func(E) GIOFAB, GIOA ~func() A, GIOB ~func() B, GIOFAB ~func() func(A) B, E, A, B any](fa GEA) func(GEFAB) GEB {
return F.Bind2nd(MonadApSeq[GEA, GEB, GEFAB, GIOA, GIOB, GIOFAB, E, A, B], fa)
}
func MonadApPar[GEA ~func(E) GIOA, GEB ~func(E) GIOB, GEFAB ~func(E) GIOFAB, GIOA ~func() A, GIOB ~func() B, GIOFAB ~func() func(A) B, E, A, B any](fab GEFAB, fa GEA) GEB {
return readert.MonadAp[GEA, GEB, GEFAB, E, A](IO.MonadApPar[GIOA, GIOB, GIOFAB, A, B], fab, fa)
}
func ApPar[GEA ~func(E) GIOA, GEB ~func(E) GIOB, GEFAB ~func(E) GIOFAB, GIOA ~func() A, GIOB ~func() B, GIOFAB ~func() func(A) B, E, A, B any](fa GEA) func(GEFAB) GEB {
return F.Bind2nd(MonadApPar[GEA, GEB, GEFAB, GIOA, GIOB, GIOFAB, E, A, B], fa)
}
func Ask[GEE ~func(E) GIOE, GIOE ~func() E, E any]() GEE {
return FR.Ask(FromReader[func(E) E, GEE, GIOE, E, E])()
}
func Asks[GA ~func(E) A, GEA ~func(E) GIOA, GIOA ~func() A, E, A any](r GA) GEA {
return FR.Asks(FromReader[GA, GEA, GIOA, E, A])(r)
}
func MonadChainIOK[GEA ~func(E) GIOA, GEB ~func(E) GIOB, GIOA ~func() A, GIOB ~func() B, E, A, B any](ma GEA, f func(A) GIOB) GEB {
return MonadChain(ma, F.Flow2(f, FromIO[GEB]))
}
func ChainIOK[GEA ~func(E) GIOA, GEB ~func(E) GIOB, GIOA ~func() A, GIOB ~func() B, E, A, B any](f func(A) GIOB) func(GEA) GEB {
return F.Bind2nd(MonadChainIOK[GEA, GEB, GIOA, GIOB, E, A, B], f)
}
// Defer creates an IO by creating a brand new IO via a generator function, each time
func Defer[GEA ~func(E) GA, GA ~func() A, E, A any](gen func() GEA) GEA {
return func(e E) GA {
return func() A {
return gen()(e)()
}
}
}