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69 lines
2.3 KiB
Go
69 lines
2.3 KiB
Go
// Copyright (c) 2024 IBM Corp.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package generic
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import (
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ET "github.com/IBM/fp-go/either"
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"github.com/IBM/fp-go/internal/functor"
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"github.com/IBM/fp-go/internal/monad"
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"github.com/IBM/fp-go/internal/pointed"
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)
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type ioEitherPointed[E, A any, GA ~func() ET.Either[E, A]] struct{}
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type ioEitherMonad[E, A, B any, GA ~func() ET.Either[E, A], GB ~func() ET.Either[E, B], GAB ~func() ET.Either[E, func(A) B]] struct{}
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type ioEitherFunctor[E, A, B any, GA ~func() ET.Either[E, A], GB ~func() ET.Either[E, B]] struct{}
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func (o *ioEitherPointed[E, A, GA]) Of(a A) GA {
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return Of[GA, E, A](a)
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}
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func (o *ioEitherMonad[E, A, B, GA, GB, GAB]) Of(a A) GA {
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return Of[GA, E, A](a)
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}
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func (o *ioEitherMonad[E, A, B, GA, GB, GAB]) Map(f func(A) B) func(GA) GB {
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return Map[GA, GB, E, A, B](f)
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}
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func (o *ioEitherMonad[E, A, B, GA, GB, GAB]) Chain(f func(A) GB) func(GA) GB {
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return Chain[GA, GB, E, A, B](f)
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}
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func (o *ioEitherMonad[E, A, B, GA, GB, GAB]) Ap(fa GA) func(GAB) GB {
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return Ap[GB, GAB, GA, E, A, B](fa)
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}
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func (o *ioEitherFunctor[E, A, B, GA, GB]) Map(f func(A) B) func(GA) GB {
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return Map[GA, GB, E, A, B](f)
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}
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// Pointed implements the pointed operations for [IOEither]
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func Pointed[E, A any, GA ~func() ET.Either[E, A]]() pointed.Pointed[A, GA] {
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return &ioEitherPointed[E, A, GA]{}
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}
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// Functor implements the monadic operations for [IOEither]
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func Functor[E, A, B any, GA ~func() ET.Either[E, A], GB ~func() ET.Either[E, B]]() functor.Functor[A, B, GA, GB] {
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return &ioEitherFunctor[E, A, B, GA, GB]{}
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}
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// Monad implements the monadic operations for [IOEither]
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func Monad[E, A, B any, GA ~func() ET.Either[E, A], GB ~func() ET.Either[E, B], GAB ~func() ET.Either[E, func(A) B]]() monad.Monad[A, B, GA, GB, GAB] {
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return &ioEitherMonad[E, A, B, GA, GB, GAB]{}
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}
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