progmem wrapper

template<typename Type>
class InProgmem {
  friend class Font;
  Type const val; // InProgmem<Type> should be as big as Type
  InProgmem(Type const &val) : val(val) {} // Keep the compiler quiet
  // Prevent copying, makes problems otherwise
  InProgmem(const InProgmem<Type>& other) : val(other.val) {};
  InProgmem<Type>& operator = (const InProgmem<Type>& other)
    { return *this; }
public:
#if defined AVR
  operator Type() const {
    Type out;
    memcpy_P(&out, this, sizeof(Type));
    return out;
  }
#else
  // If running on a computer just return the value
  operator Type() const {
    return val;
  }
#endif
} __attribute__((packed));

struct MyData {
  InProgmem<int> a, b;
};

PROGMEM int const dataInProgmem[] = {23, 42};

void setup() {
  Serial.begin(9600);
  MyData *data = (MyData*)&dataInProgmem;
  Serial.println(data->a);
  Serial.println(data->b);
}

void loop() {
}