--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/paper/src/context.h	Fri Jan 20 14:39:45 2017 +0900
@@ -0,0 +1,47 @@
+/* Context definition */
+
+#define ALLOCATE_SIZE 1024
+
+enum Code {
+    Code1,
+    Code2,
+    Allocator,
+};
+
+enum UniqueData {
+    Allocate,
+    Tree,
+};
+
+struct Context {
+    int codeNum;
+    __code (**code) (struct Context *);
+    void* heap_start;
+    void* heap;
+    long dataSize;
+    int dataNum;
+    union Data **data;
+};
+
+union Data {
+    struct Tree {
+        union Data* root;
+        union Data* current;
+        union Data* prev;
+        int result;
+    } tree;
+    struct Node {
+        int key;
+        int value;
+        enum Color {
+            Red,
+            Black,
+        } color;
+        union Data* left;
+        union Data* right;
+    } node;
+    struct Allocate {
+        long size;
+        enum Code next;
+    } allocate;
+};