extract copyConnectedComponent

TODO.md

@@ -1,7 +1,5 @@
 # connected component
 
-extract `copyConnectedComponent`
-
 clonePortRecord
 
 clonePortEntry

src/lang/net/copyConnectedComponent.ts

@@ -0,0 +1,28 @@
+import { Node } from "../node"
+import { Net } from "./Net"
+import { findPortRecordOrFail } from "./findPortRecordOrFail"
+import { hasNode } from "./hasNode"
+
+export function copyConnectedComponent(
+  net: Net,
+  component: Net,
+  node: Node,
+): void {
+  if (hasNode(component, node)) {
+    return
+  }
+
+  copyNode(net, component, node)
+
+  const portRecord = findPortRecordOrFail(net, node)
+  for (const portEntry of Object.values(portRecord)) {
+    if (portEntry.connection) {
+      copyConnectedComponent(net, component, portEntry.connection.port.node)
+    }
+  }
+}
+
+export function copyNode(source: Net, target: Net, node: Node): void {
+  const portRecord = findPortRecordOrFail(source, node)
+  //
+}

src/lang/net/findConnectedComponent.ts

@@ -1,35 +1,10 @@
 import { Node } from "../node"
 import { Net } from "./Net"
+import { copyConnectedComponent } from "./copyConnectedComponent"
 import { createNet } from "./createNet"
-import { findPortRecordOrFail } from "./findPortRecordOrFail"
-import { hasNode } from "./hasNode"
 
 export function findConnectedComponent(net: Net, node: Node): Net {
   const component = createNet()
   copyConnectedComponent(net, component, node)
   return component
 }
-
-export function copyConnectedComponent(
-  net: Net,
-  component: Net,
-  node: Node,
-): void {
-  if (hasNode(component, node)) {
-    return
-  }
-
-  copyNode(net, component, node)
-
-  const portRecord = findPortRecordOrFail(net, node)
-  for (const portEntry of Object.values(portRecord)) {
-    if (portEntry.connection) {
-      copyConnectedComponent(net, component, portEntry.connection.port.node)
-    }
-  }
-}
-
-export function copyNode(source: Net, target: Net, node: Node): void {
-  const portRecord = findPortRecordOrFail(source, node)
-  //
-}