--- a/src/parallel_execution/examples/gearsDirectory/GearsDirectory.h	Sat Nov 20 17:23:16 2021 +0900
+++ b/src/parallel_execution/examples/gearsDirectory/GearsDirectory.h	Sat Nov 27 17:29:54 2021 +0900
@@ -2,7 +2,7 @@
   union Data* gearsDirectory;
   struct Integer* name;
   __code mkdir(Impl* gearsDirectory, struct Integer* name, __code next(...));
-  __code cd2Child(Impl* gearsDirectory, __code next(...));
+  __code cd2Child(Impl* gearsDirectory, struct Integer* name, __code next(...));
   __code cd2Parent(Impl* gearsDirectory, __code next(...));
   __code next(...);
 } GearsDirectory;
\ No newline at end of file

--- a/src/parallel_execution/examples/gearsDirectory/GearsDirectoryImpl.cbc	Sat Nov 20 17:23:16 2021 +0900
+++ b/src/parallel_execution/examples/gearsDirectory/GearsDirectoryImpl.cbc	Sat Nov 27 17:29:54 2021 +0900
@@ -17,7 +17,7 @@
     struct GearsDirectoryImpl* gears_directory_impl = new GearsDirectoryImpl();
     gearsDirectory->gearsDirectory = (union Data*)gears_directory_impl;
 
-    struct Tree* firstTree = new RedBlackTree();
+    struct Tree* firstTree = createRedBlackTree(context);
     gears_directory_impl->currentDirectory = firstTree;
     gears_directory_impl->directoryStack = createSingleLinkedStack(context);
     gearsDirectory->mkdir = C_mkdirGearsDirectoryImpl;
@@ -27,22 +27,44 @@
 }
 
 __code mkdir(struct GearsDirectoryImpl* gearsDirectory, struct Integer* name, __code next(...)) {
-    struct Tree* newDirectory = new RedBlackTree();
+    struct Tree* newDirectory = createRedBlackTree(context);
     Node* node = new Node();
     node->value = newDirectory;
     node->key = name->value;
-    goto next(...);
+    struct Tree* cDirectory = new Tree();
+    cDirectory = gearsDirectory->currentDirectory;
+    goto cDirectory->put(node, next(...));
+}
+
+__code cd2Child(struct GearsDirectoryImpl* gearsDirectory, struct Integer* name, __code next(...)) {
+    // 現在のtreeからnode->keyがnameと一致するものをsearch
+    struct Tree* cDirectory = new Tree();
+    cDirectory = gearsDirectory->currentDirectory;
+    struct Node* node = new Node();
+    node->key = name->value;
+    goto cDirectory->get(node, cd2Child2);
 }
 
-__code cd2Child(struct GearsDirectoryImpl* gearsDirectory, __code next(...)) {
+__code cd2Child2(struct GearsDirectoryImpl* gearsDirectory, struct Node* node0, __code next(...)) {
     // treeを作る
-    struct Tree* tree = new RedBlackTree();
+    // struct Tree* tree = new RedBlackTree();
     // currentDirectoryを作ったtreeに変更する
-    struct Tree* parentDirectory = gearsDirectory->currentDirectory;
-    gearsDirectory->currentDirectory = tree;
+    // struct Tree* parentDirectory = gearsDirectory->currentDirectory;
+    // gearsDirectory->currentDirectory = tree;
     // current treeをstackにpushする
-    struct Stack* ds = gearsDirectory->directoryStack;
-    goto ds->push(parentDirectory, next(...));
+    // struct Stack* ds = gearsDirectory->directoryStack;
+
+    // searchの結果，存在すればcurrentDirectoryにsearchしたtreeをsetする
+    gearsDirectory->currentDirectory = node0->value;
+    goto next(...);
+    // gato ds->push(parentDirectory, next(...));
+}
+
+__code cd2Child2_stub(struct Context* context) {
+	GearsDirectoryImpl* gearsDirectory = (GearsDirectoryImpl*)GearImpl(context, GearsDirectory, gearsDirectory);
+	enum Code next = Gearef(context, GearsDirectory)->next;
+    Node* node0 = Gearef(context, Tree)->node;
+	goto cd2Child2(context, gearsDirectory, node0, next);
 }
 
 
@@ -58,7 +80,7 @@
 
 __code cd2Parent2_stub(struct Context* context) {
 	GearsDirectoryImpl* gearsDirectory = (GearsDirectoryImpl*)GearImpl(context, GearsDirectory, gearsDirectory);
-	Tree* tree = Gearef(context, Stack)->data;
+	Tree* tree = Gearef(context, Tree);
 	enum Code next = Gearef(context, GearsDirectory)->next;
 	goto cd2Parent2(context, gearsDirectory, tree, next);
 }

--- a/src/parallel_execution/examples/gearsDirectory/GearsDirectory_test.cbc	Sat Nov 20 17:23:16 2021 +0900
+++ b/src/parallel_execution/examples/gearsDirectory/GearsDirectory_test.cbc	Sat Nov 27 17:29:54 2021 +0900
@@ -15,7 +15,9 @@
 }
 
 __code task2(GearsDirectory* gearsDirectory){
-    // goto gearsDirectory->cd2Parent(task3);
+    Integer* name = new Integer();
+    name->value = 1;
+    goto gearsDirectory->cd2Child(name, task3);
 }
 
 __code task2_stub(struct Context* context){