go/fp-go
1
0
Fork 0
mirror of https://github.com/IBM/fp-go.git synced 2025-08-10 22:31:32 +02:00
Code Issues Releases Activity

fix: refactor Writer monad

Browse Source 
Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
This commit is contained in:
Dr. Carsten Leue
2024-02-13 10:44:57 +01:00
parent d0e4984b60
commit 01786a054b
10 changed files with 302 additions and 149 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
writer/writer.go
View File

@@ -19,30 +19,30 @@ import (
EM "github.com/IBM/fp-go/endomorphism"
IO "github.com/IBM/fp-go/io"
M "github.com/IBM/fp-go/monoid"
S "github.com/IBM/fp-go/semigroup"
T "github.com/IBM/fp-go/tuple"
P "github.com/IBM/fp-go/pair"
SG "github.com/IBM/fp-go/semigroup"
G "github.com/IBM/fp-go/writer/generic"
)
type Writer[W, A any] IO.IO[T.Tuple3[A, W, S.Semigroup[W]]]
type Writer[W, A any] IO.IO[P.Pair[A, W]]
// Tell appends a value to the accumulator
func Tell[W any](s S.Semigroup[W]) func(W) Writer[W, any] {
return G.Tell[Writer[W, any]](s)
func Tell[W any](w W) Writer[W, any] {
return G.Tell[Writer[W, any]](w)
}
func Of[A, W any](m M.Monoid[W]) func(A) Writer[W, A] {
return G.Of[Writer[W, A]](m)
func Of[A, W any](m M.Monoid[W], a A) Writer[W, A] {
return G.Of[Writer[W, A]](m, a)
}
// Listen modifies the result to include the changes to the accumulator
func Listen[W, A any](fa Writer[W, A]) Writer[W, T.Tuple2[A, W]] {
return G.Listen[Writer[W, A], Writer[W, T.Tuple2[A, W]], W, A](fa)
func Listen[W, A any](fa Writer[W, A]) Writer[W, P.Pair[A, W]] {
return G.Listen[Writer[W, A], Writer[W, P.Pair[A, W]], W, A](fa)
}
// Pass applies the returned function to the accumulator
func Pass[W, A any](fa Writer[W, T.Tuple2[A, EM.Endomorphism[W]]]) Writer[W, A] {
return G.Pass[Writer[W, T.Tuple2[A, EM.Endomorphism[W]]], Writer[W, A]](fa)
func Pass[W, A any](fa Writer[W, P.Pair[A, EM.Endomorphism[W]]]) Writer[W, A] {
return G.Pass[Writer[W, P.Pair[A, EM.Endomorphism[W]]], Writer[W, A]](fa)
}
func MonadMap[FCT ~func(A) B, W, A, B any](fa Writer[W, A], f FCT) Writer[W, B] {
@@ -53,32 +53,32 @@ func Map[W any, FCT ~func(A) B, A, B any](f FCT) func(Writer[W, A]) Writer[W, B]
return G.Map[Writer[W, B], Writer[W, A]](f)
}
func MonadChain[FCT ~func(A) Writer[W, B], W, A, B any](fa Writer[W, A], fct FCT) Writer[W, B] {
return G.MonadChain[Writer[W, B], Writer[W, A], FCT](fa, fct)
func MonadChain[FCT ~func(A) Writer[W, B], W, A, B any](s SG.Semigroup[W], fa Writer[W, A], fct FCT) Writer[W, B] {
return G.MonadChain[Writer[W, B], Writer[W, A], FCT](s, fa, fct)
}
func Chain[A, B, W any](fa func(A) Writer[W, B]) func(Writer[W, A]) Writer[W, B] {
return G.Chain[Writer[W, B], Writer[W, A], func(A) Writer[W, B]](fa)
func Chain[A, B, W any](s SG.Semigroup[W], fa func(A) Writer[W, B]) func(Writer[W, A]) Writer[W, B] {
return G.Chain[Writer[W, B], Writer[W, A], func(A) Writer[W, B]](s, fa)
}
func MonadAp[B, A, W any](fab Writer[W, func(A) B], fa Writer[W, A]) Writer[W, B] {
return G.MonadAp[Writer[W, B], Writer[W, func(A) B], Writer[W, A]](fab, fa)
func MonadAp[B, A, W any](s SG.Semigroup[W], fab Writer[W, func(A) B], fa Writer[W, A]) Writer[W, B] {
return G.MonadAp[Writer[W, B], Writer[W, func(A) B], Writer[W, A]](s, fab, fa)
}
func Ap[B, A, W any](fa Writer[W, A]) func(Writer[W, func(A) B]) Writer[W, B] {
return G.Ap[Writer[W, B], Writer[W, func(A) B], Writer[W, A]](fa)
func Ap[B, A, W any](s SG.Semigroup[W], fa Writer[W, A]) func(Writer[W, func(A) B]) Writer[W, B] {
return G.Ap[Writer[W, B], Writer[W, func(A) B], Writer[W, A]](s, fa)
}
func MonadChainFirst[FCT ~func(A) Writer[W, B], W, A, B any](fa Writer[W, A], fct FCT) Writer[W, A] {
return G.MonadChainFirst[Writer[W, B], Writer[W, A], FCT](fa, fct)
func MonadChainFirst[FCT ~func(A) Writer[W, B], W, A, B any](s SG.Semigroup[W], fa Writer[W, A], fct FCT) Writer[W, A] {
return G.MonadChainFirst[Writer[W, B], Writer[W, A], FCT](s, fa, fct)
}
func ChainFirst[FCT ~func(A) Writer[W, B], W, A, B any](fct FCT) func(Writer[W, A]) Writer[W, A] {
return G.ChainFirst[Writer[W, B], Writer[W, A], FCT](fct)
func ChainFirst[FCT ~func(A) Writer[W, B], W, A, B any](s SG.Semigroup[W], fct FCT) func(Writer[W, A]) Writer[W, A] {
return G.ChainFirst[Writer[W, B], Writer[W, A], FCT](s, fct)
}
func Flatten[W, A any](mma Writer[W, Writer[W, A]]) Writer[W, A] {
return G.Flatten[Writer[W, Writer[W, A]], Writer[W, A]](mma)
func Flatten[W, A any](s SG.Semigroup[W], mma Writer[W, Writer[W, A]]) Writer[W, A] {
return G.Flatten[Writer[W, Writer[W, A]], Writer[W, A]](s, mma)
}
// Execute extracts the accumulator
@@ -102,13 +102,13 @@ func Censor[A any, FCT ~func(W) W, W any](f FCT) func(Writer[W, A]) Writer[W, A]
}
// MonadListens projects a value from modifications made to the accumulator during an action
func MonadListens[A any, FCT ~func(W) B, W, B any](fa Writer[W, A], f FCT) Writer[W, T.Tuple2[A, B]] {
return G.MonadListens[Writer[W, A], Writer[W, T.Tuple2[A, B]]](fa, f)
func MonadListens[A any, FCT ~func(W) B, W, B any](fa Writer[W, A], f FCT) Writer[W, P.Pair[A, B]] {
return G.MonadListens[Writer[W, A], Writer[W, P.Pair[A, B]]](fa, f)
}
// Listens projects a value from modifications made to the accumulator during an action
func Listens[A any, FCT ~func(W) B, W, B any](f FCT) func(Writer[W, A]) Writer[W, T.Tuple2[A, B]] {
return G.Listens[Writer[W, A], Writer[W, T.Tuple2[A, B]]](f)
func Listens[A any, FCT ~func(W) B, W, B any](f FCT) func(Writer[W, A]) Writer[W, P.Pair[A, B]] {
return G.Listens[Writer[W, A], Writer[W, P.Pair[A, B]]](f)
}
func MonadFlap[W, B, A any](fab Writer[W, func(A) B], a A) Writer[W, B] {