use exp/slices for working with 'receivers' list

core/action/action.go

@@ -4,6 +4,7 @@ import (
 	lib "git.sr.ht/~cco/go-scopes"
 	"git.sr.ht/~cco/go-scopes/core/message"
 	"git.sr.ht/~cco/go-scopes/logging"
+	"golang.org/x/exp/slices"
 )
 
 type BaseSpec = baseSpec
@@ -22,15 +23,20 @@ func (spec *baseSpec) Receivers() []lib.Addressable {
 }
 
 func (spec *baseSpec) AddReceiver(rcv lib.Addressable) lib.ActionSpec {
-	for _, r := range spec.receivers {
+	if slices.Index(spec.receivers, rcv) == -1 {
-		if r == rcv {
+		spec.receivers = append(spec.receivers, rcv)
-			return spec
-		}
 	}
-	spec.receivers = append(spec.receivers, rcv)
 	return spec
 }
 
+func (spec *baseSpec) RemoveReceiver(rcv lib.Addressable) {
+	rcvs := spec.receivers
+	idx := slices.Index(rcvs, rcv)
+	if idx != -1 {
+		spec.receivers = slices.Delete(rcvs, idx, idx+1)
+	}
+}
+
 func Base(hdlr lib.ActionHandler, rcvs ...string) *baseSpec {
 	spec := baseSpec{handler: hdlr}
 	for _, rcv := range rcvs {

go.mod

@@ -5,6 +5,8 @@ go 1.20
 require (
 	github.com/gin-gonic/gin v1.9.1
 	github.com/rs/zerolog v1.29.1
+	golang.org/x/exp v0.0.0-20230725093048-515e97ebf090
+	golang.org/x/net v0.10.0
 )
 
 require (
@@ -28,7 +30,6 @@ require (
 	github.com/ugorji/go/codec v1.2.11 // indirect
 	golang.org/x/arch v0.3.0 // indirect
 	golang.org/x/crypto v0.9.0 // indirect
-	golang.org/x/net v0.10.0 // indirect
 	golang.org/x/sys v0.8.0 // indirect
 	golang.org/x/text v0.9.0 // indirect
 	google.golang.org/protobuf v1.30.0 // indirect

go.sum

@@ -25,8 +25,8 @@ github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
 github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
@@ -73,6 +73,8 @@ golang.org/x/arch v0.3.0 h1:02VY4/ZcO/gBOH6PUaoiptASxtXU10jazRCP865E97k=
 golang.org/x/arch v0.3.0/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
 golang.org/x/crypto v0.9.0 h1:LF6fAI+IutBocDJ2OT0Q1g8plpYljMZ4+lty+dsqw3g=
 golang.org/x/crypto v0.9.0/go.mod h1:yrmDGqONDYtNj3tH8X9dzUun2m2lzPa9ngI6/RUPGR0=
+golang.org/x/exp v0.0.0-20230725093048-515e97ebf090 h1:Di6/M8l0O2lCLc6VVRWhgCiApHV8MnQurBnFSHsQtNY=
+golang.org/x/exp v0.0.0-20230725093048-515e97ebf090/go.mod h1:FXUEEKJgO7OQYeo8N01OfiKP8RXMtf6e8aTskBGqWdc=
 golang.org/x/net v0.10.0 h1:X2//UzNDwYmtCLn7To6G58Wr6f5ahEAQgKNzv9Y951M=
 golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -83,7 +85,6 @@ golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
 golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=
 golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=

matrix/matrix.go

@@ -48,7 +48,7 @@ func disconnect(src, tgt lib.Context) { //, pattern string) {
 	for _, act := range cfg.Actions() {
 		//if act.Pattern().String() == pattern {
 		for _, spec := range act.Specs() {
-			//spec.RemoveReceiver(tgt)
+			spec.RemoveReceiver(tgt)
 		}
 		//}
 	}

scopes.go

@@ -84,6 +84,7 @@ type ActionSpec interface {
 	Handler() ActionHandler
 	Receivers() []Addressable
 	AddReceiver(Addressable) ActionSpec
+	RemoveReceiver(Addressable)
 }
 
 // procedures and handlers