Update Selection.

include/Compiler/Selection.h

@@ -3,29 +3,21 @@
 
 namespace clice {
 
+// Code Action:
+// add implementation in cpp file(important).
+// extract implementation to cpp file(important).
+// generate virtual function declaration(full qualified?).
+// generate c++20 coroutine and awaiter interface.
+// expand macro(one step by step).
+// invert if.
+
 class SelectionTree {
 public:
-    enum Selection {
-        Unselected,
-        Partial,
-        Complete,
-    };
 
-    struct Node {
-        Node* parent;
-        llvm::SmallVector<const Node*> children;
-        clang::DynTypedNode ASTNode;
-    };
-
-    const Node* commonAncestor() const;
-
-    const Node& root() const;
 
     SelectionTree(clang::ASTContext& context, const clang::syntax::TokenBuffer& tokens, unsigned start, unsigned end);
 
 private:
-    std::deque<Node> m_Nodes;
-    const Node* m_Root;
 };
 
 }  // namespace clice