1 files changed, 31 insertions, 2 deletions
diff --git a/config.h b/config.h
index 0f9ab5d..f9de97a 100644
--- a/config.h
+++ b/config.h
@@ -1,12 +1,41 @@
 #pragma once
 
 #include <unordered_map>
+#include <vector>
 
 #include "command.h"
+#include "either.h"
+
 
 using namespace std;
 
 
-using Keybindings = unordered_map<int,Command>;
+class KeyInputMachine{
+	struct TreeNode{
+		Command *cmd=nullptr;
+		unordered_map<int,TreeNode*> *m=nullptr;
+
+		~TreeNode();
+	};
+
+	TreeNode root;
+	TreeNode *current=&root;
+
+public:
+	KeyInputMachine();
+	KeyInputMachine(const vector<pair<vector<int>,Command>> &list);
+	KeyInputMachine(const KeyInputMachine&) = delete;
+
+	//Overwrites if already existent; ambiguous-prefix bindings not permitted
+	//at the moment
+	void insert(const vector<int> &keys,const Command &cmd);
+
+	//If Left, then true indicates 'still possibilities'; false indicates 'no more
+	//possible sequences left, error'
+	Either<bool,Command> input(int key);
+
+	//Cancel the current input combination
+	void cancel();
+};
 
-extern Keybindings global_keybindings;
+extern KeyInputMachine global_keyinput;