added clone functions for nodes

Since nodes are are extremely derivative types, we use a clone/copy function to produce new types of the derived class easily.
2019-11-22 16:53:30 +09:00
parent 2599c1e8a4
commit 492c8f474a
23 changed files with 69 additions and 7 deletions
@@ -32,7 +32,7 @@ class GapBlock : public Block
 public:
  GapBlock();

-  virtual Block * copy() override;
+  virtual Node * copy() override;

  virtual Type type() override;