From 65e09e0e90a79467ca23be155eaa890a13d8726e Mon Sep 17 00:00:00 2001
From: "Dr. Carsten Leue" <carsten.leue@de.ibm.com>
Date: Fri, 16 Feb 2024 15:54:40 +0100
Subject: [PATCH] fix: expose Monad and Pointed for IOEither

Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
---
 ioeither/generic/monad.go | 56 +++++++++++++++++++++++++++++++++++++++
 ioeither/monad.go         | 32 ++++++++++++++++++++++
 2 files changed, 88 insertions(+)
 create mode 100644 ioeither/generic/monad.go
 create mode 100644 ioeither/monad.go

diff --git a/ioeither/generic/monad.go b/ioeither/generic/monad.go
new file mode 100644
index 0000000..f3989a0
--- /dev/null
+++ b/ioeither/generic/monad.go
@@ -0,0 +1,56 @@
+// 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 (
+	ET "github.com/IBM/fp-go/either"
+	"github.com/IBM/fp-go/internal/monad"
+	"github.com/IBM/fp-go/internal/pointed"
+)
+
+type ioEitherPointed[E, A any, GA ~func() ET.Either[E, A]] struct{}
+
+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{}
+
+func (o *ioEitherPointed[E, A, GA]) Of(a A) GA {
+	return Of[GA, E, A](a)
+}
+
+func (o *ioEitherMonad[E, A, B, GA, GB, GAB]) Of(a A) GA {
+	return Of[GA, E, A](a)
+}
+
+func (o *ioEitherMonad[E, A, B, GA, GB, GAB]) Map(f func(A) B) func(GA) GB {
+	return Map[GA, GB, E, A, B](f)
+}
+
+func (o *ioEitherMonad[E, A, B, GA, GB, GAB]) Chain(f func(A) GB) func(GA) GB {
+	return Chain[GA, GB, E, A, B](f)
+}
+
+func (o *ioEitherMonad[E, A, B, GA, GB, GAB]) Ap(fa GA) func(GAB) GB {
+	return Ap[GB, GAB, GA, E, A, B](fa)
+}
+
+// Pointed implements the pointed operations for [IOEither]
+func Pointed[E, A any, GA ~func() ET.Either[E, A]]() pointed.Pointed[A, GA] {
+	return &ioEitherPointed[E, A, GA]{}
+}
+
+// Monad implements the monadic operations for [IOEither]
+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] {
+	return &ioEitherMonad[E, A, B, GA, GB, GAB]{}
+}
diff --git a/ioeither/monad.go b/ioeither/monad.go
new file mode 100644
index 0000000..2eeaa3b
--- /dev/null
+++ b/ioeither/monad.go
@@ -0,0 +1,32 @@
+// 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 ioeither
+
+import (
+	"github.com/IBM/fp-go/internal/monad"
+	"github.com/IBM/fp-go/internal/pointed"
+	G "github.com/IBM/fp-go/ioeither/generic"
+)
+
+// Pointed returns the pointed operations for [IOEither]
+func Pointed[E, A any]() pointed.Pointed[A, IOEither[E, A]] {
+	return G.Pointed[E, A, IOEither[E, A]]()
+}
+
+// Monad returns the monadic operations for [IOEither]
+func Monad[E, A, B any]() monad.Monad[A, B, IOEither[E, A], IOEither[E, B], IOEither[E, func(A) B]] {
+	return G.Monad[E, A, B, IOEither[E, A], IOEither[E, B], IOEither[E, func(A) B]]()
+}