re-arrange definitions in scopes source code

scopes.go

@@ -1,4 +1,4 @@
-// Package `scopes` provides a set of common types (mostly interfaces
+// Package `scopes` provides a set of core types (mostly interfaces
 // and function declarations) and some basic functions.
 package scopes
 
@@ -8,35 +8,6 @@ import (
 	"sync"
 )
 
-// config
-
-type ActionSpec interface {
-	Handler() ActionHandler
-	Receivers() []string
-}
-
-type Pattern interface {
-	fmt.Stringer
-	Slice() []string
-}
-
-type ActionConfig interface {
-	Pattern() Pattern
-	Specs() []ActionSpec
-}
-
-type Config interface {
-	Name() string
-	Starter() StartProc
-	Step() StepProc
-	MessageHandler() MessageHandler
-	DoneHandler() StepProc
-	Actions() []ActionConfig
-	AddAction(string, ...ActionSpec) Config
-	Children() []Config
-	Add(...Config) Config
-}
-
 // services - context
 
 type Services map[string]Context
@@ -100,6 +71,11 @@ type Action interface {
 	Handle() bool
 }
 
+type ActionSpec interface {
+	Handler() ActionHandler
+	Receivers() []string
+}
+
 // procedures and handlers
 
 type Proc = func(Context)
@@ -108,7 +84,31 @@ type StepProc = func(Context) bool
 type MessageHandler = func(Context, Message) bool
 type ActionHandler = func(Action) bool
 
-// library functions
+// standard configuration interfaces
+
+type Config interface {
+	Name() string
+	Starter() StartProc
+	Step() StepProc
+	MessageHandler() MessageHandler
+	DoneHandler() StepProc
+	Actions() []ActionConfig
+	AddAction(string, ...ActionSpec) Config
+	Children() []Config
+	Add(...Config) Config
+}
+
+type ActionConfig interface {
+	Pattern() Pattern
+	Specs() []ActionSpec
+}
+
+type Pattern interface {
+	fmt.Stringer
+	Slice() []string
+}
+
+// core library functions
 
 func RunCtx(ctx Context, fct Proc) {
 	ctx.WaitGroup().Add(1)