From aef0048119de4e7a57be0c1aebefebae1b4997c3 Mon Sep 17 00:00:00 2001
From: "Dr. Carsten Leue" <carsten.leue@de.ibm.com>
Date: Thu, 11 Jan 2024 17:18:35 +0100
Subject: [PATCH] fix: add Wrap and Unwrap to endomorphism

Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
---
 endomorphism/generic/monoid.go | 10 ++++++++++
 endomorphism/monoid.go         | 10 ++++++++++
 2 files changed, 20 insertions(+)

diff --git a/endomorphism/generic/monoid.go b/endomorphism/generic/monoid.go
index 9b8e0c6..8142075 100644
--- a/endomorphism/generic/monoid.go
+++ b/endomorphism/generic/monoid.go
@@ -28,6 +28,16 @@ func Of[ENDO ~func(A) A, F ~func(A) A, A any](f F) ENDO {
 	}
 }
 
+// Wrap converts any function to an [Endomorphism]
+func Wrap[ENDO ~func(A) A, F ~func(A) A, A any](f F) ENDO {
+	return Of[ENDO](f)
+}
+
+// Unwrap converts any [Endomorphism] to a normal function
+func Unwrap[F ~func(A) A, ENDO ~func(A) A, A any](f ENDO) F {
+	return Of[F](f)
+}
+
 func Identity[ENDO ~func(A) A, A any]() ENDO {
 	return Of[ENDO](F.Identity[A])
 }
diff --git a/endomorphism/monoid.go b/endomorphism/monoid.go
index 8623692..4212f9b 100644
--- a/endomorphism/monoid.go
+++ b/endomorphism/monoid.go
@@ -29,6 +29,16 @@ func Of[F ~func(A) A, A any](f F) Endomorphism[A] {
 	return G.Of[Endomorphism[A]](f)
 }
 
+// Wrap converts any function to an [Endomorphism]
+func Wrap[F ~func(A) A, A any](f F) Endomorphism[A] {
+	return G.Wrap[Endomorphism[A]](f)
+}
+
+// Unwrap converts any [Endomorphism] to a function
+func Unwrap[F ~func(A) A, A any](f Endomorphism[A]) F {
+	return G.Unwrap[F](f)
+}
+
 // Identity returns the identity [Endomorphism]
 func Identity[A any]() Endomorphism[A] {
 	return G.Identity[Endomorphism[A]]()