some changes

src/ckitty/memory/data_view.hpp

@@ -19,7 +19,7 @@ namespace ckitty {
         data_view(const u8* begin, const u8* end)
         : _begin(begin), _end(end) {}
 
-        data_view(const u8* data, const size length)
+        data_view(const u8* data, const isize length)
         : _begin(data), _end(data + length) {}
 
         data_view(const std::string& str)
@@ -34,19 +34,19 @@ namespace ckitty {
             return _end;
         }
 
-        u8 operator[](size i) const {
+        u8 operator[](isize i) const {
             return *(_begin + i);
         }
 
-        size length() const {
-            return _end - _begin;
+        isize length() const {
+            return isize(_end - _begin);
         }
 
-        const data_view sub_off(size offset, size length) const {
+        const data_view sub_off(isize offset, isize length) const {
             return data_view(_begin + offset, _begin + offset + length);
         }
 
-        const data_view sub_abs(size begin, size end) const {
+        const data_view sub_abs(isize begin, isize end) const {
             return data_view(_begin + begin, _begin + end);
         }