Some code organization and splitting up

include/assembly.hpp

@@ -0,0 +1,51 @@
+#ifndef INC_6502_CPP_ASSEMBLY_HPP
+#define INC_6502_CPP_ASSEMBLY_HPP
+
+struct Operand
+{
+  enum class Type {
+    empty,
+    literal,
+    reg /*ister*/
+  };
+
+  Type        type    = Type::empty;
+  int         reg_num = 0;
+  std::string value;
+
+  Operand() = default;
+
+  bool operator==(const Operand &other) const
+  {
+    return type == other.type && reg_num == other.reg_num && value == other.value;
+  }
+
+  Operand(const Type t, std::string v)
+    : type(t), value(std::move(v))
+  {
+    assert(type == Type::literal);
+  }
+
+  Operand(const Type t, const int num)
+    : type(t), reg_num(num)
+  {
+    assert(type == Type::reg);
+  }
+};
+
+
+struct ASMLine
+{
+  enum class Type {
+    Label,
+    Instruction,
+    Directive
+  };
+
+  ASMLine(Type t, std::string te) : type(t), text(std::move(te)) {}
+
+  Type        type;
+  std::string text;
+};
+
+#endif//INC_6502_CPP_ASSEMBLY_HPP