Function arguments

src/defs/defs.h

@@ -17,6 +17,11 @@ struct Instruction;
 
 typedef std::vector<Instruction> InstructionGroup;
 
+struct Function {
+    std::vector<std::string> arg_names;
+    InstructionGroup body;
+};
+
 struct Varname {
     std::string key;
     Varname(std::string in);