check

lib/include/intcode.hpp

@@ -36,9 +36,6 @@ public:
   Machine();
   explicit Machine(std::vector<ValueType> ram);
 
-  /// Advance machine until next side effect
-  auto Step() -> std::variant<Input, Output, Halt>;
-
   /// Access memory at absolute address
   /// @param address
   /// @return reference to memory at given address
@@ -48,8 +45,14 @@ public:
   /// @param offset from base pointer
   /// @return reference to memory at given offset
   auto Rel(std::size_t offset) -> ValueType &;
+
+  auto Next() -> ValueType &;
+  auto Goto(std::size_t address) -> void;
+  auto Rebase(std::size_t offset) -> void;
 };
 
+auto Step(Machine & m) -> std::variant<Input, Output, Halt>;
+
 struct BadInstruction : public std::runtime_error {
   explicit BadInstruction(char const* what);
 };