Minor changes

include/parser.hpp

@@ -1,15 +1,15 @@
 #include <fstream>
 #include <vector>
 #include <unordered_map>
-#include <functional>
 #include <algorithm>
 #include <bitset>
+#include "symbol_table.hpp"
 
 class parser
 {
 private:
     std::string filename;
-    int count_ins = 0;
+    symbol_table table;
 
 public:
     parser() {}
@@ -18,7 +18,7 @@ public:
     void assemble();
     std::vector<std::array<char, 16>> get_machine_code;
     char command_type(std::string mnemonic);
-    std::string symbol();
+    void create_table();
     std::string dest(std::string des);
     std::string comp(std::string com);
     std::string jump(std::string jum);

include/symbol_table.hpp

@@ -32,10 +32,11 @@ private:
         {"SCREEN", 16384},
         {"KBD", 24576},
     };
+    int next = 15;
 
 public:
     symbol_table() {}
-
+    int available();
     void add_entry(std::string symbol, int address);
     bool contains(std::string symbol);
     int get_address(std::string symbol);