rename input/output

lib/include/intcode/Interpreter.hpp

@@ -9,11 +9,11 @@
 namespace intcode {
 
 struct Input {
-ValueType &pos;
+ValueType &input;
 };
 
 struct Output {
-ValueType val;
+ValueType output;
 };
 
 struct Halt {};
@@ -32,8 +32,8 @@ template <std::invocable<ValueType&> Fin, std::invocable<ValueType> Fout, std::i
 auto Advance(Machine & machine, Fin input, Fout output, Fhalt halt) {
   return std::visit(overloaded{
     [&](Halt) { return halt(); },
-    [&](Input i) { return input(i.pos); },
-    [&](Output o) { return output(o.val); },
+    [&](Input i) { return input(i.input); },
+    [&](Output o) { return output(o.output); },
     }, Step(machine));
 }
 

lib/src/Interpreter.cpp

@@ -6,11 +6,11 @@ BadInstruction::BadInstruction(char const* what)
     : std::runtime_error{what} {}
 
 auto StepInput(Machine & m, ValueType input) -> void {
-  std::get<Input>(Step(m)).pos = input;
+  std::get<Input>(Step(m)).input = input;
 }
 
 auto StepOutput(Machine & m) -> ValueType {
-  return std::get<Output>(Step(m)).val;
+  return std::get<Output>(Step(m)).output;
 }
 
 auto Step(Machine & m) -> std::variant<Input, Output, Halt> {