Support a form of setting bits easily

include/PSX/System/IOPorts/ioport.hpp

@@ -3,6 +3,24 @@
 #include "../../Auxiliary/complex_bitmap.hpp"
 
 namespace JabyEngine {
+    struct IOBitUnset {
+        size_t pos;
+
+        constexpr IOBitUnset(size_t bit_pos) : pos(bit_pos) {
+        }
+    };
+
+    struct IOBitSet {
+        size_t pos;
+
+        constexpr IOBitSet(size_t bit_pos) : pos(bit_pos) {
+        }
+
+        constexpr IOBitUnset operator!() const {
+            return IOBitUnset(this->pos);
+        }
+    };
+
     template<typename T>
     struct NormalValue {
         typedef T Value;
@@ -26,6 +44,24 @@ namespace JabyEngine {
             name##_io_base(type value) : raw_value(value) {} \
             __VA_ARGS__ \
             \
+            void set(IOBitSet bit) { \
+                this->raw_value = bit::set(this->raw_value, bit.pos); \
+            } \
+            void set(IOBitUnset bit) { \
+                this->raw_value = bit::clear(this->raw_value, bit.pos); \
+            } \
+            \
+            \
+            void clear(IOBitSet bit) { \
+                this->raw_value = bit::clear(this->raw_value, bit.pos); \
+            } \
+            \
+            \
+            bool is_set(IOBitSet bit) const { \
+                return bit::is_set(this->raw_value, bit.pos);\
+            } \
+            \
+            \
             void operator=(type value) { \
                 this->raw_value = value; \
             } \