Add a shared string that can be used in properties

api/sixtyfps-cpp/include/sixtyfps.h

@@ -1,16 +1,9 @@
-
 namespace sixtyfps::internal {
-// FIXME: this is just required because of something wrong
-// with &str in cbindgen, but one should not have &str anyway
-using str = char;
-
 // Workaround https://github.com/eqrion/cbindgen/issues/43
 struct ComponentVTable;
 }
-
-
-#include "sixtyfps_gl_internal.h"
 #include "sixtyfps_internal.h"
+#include "sixtyfps_gl_internal.h"
 
 namespace sixtyfps {
 

api/sixtyfps-cpp/include/sixtyfps_string.h

@@ -0,0 +1,36 @@
+#include <string_view>
+#include "sixtyfps_string_internal.h"
+
+namespace sixtyfps {
+
+struct SharedString
+{
+    SharedString() { internal::sixtyfps_shared_string_from_bytes(this, "", 0); }
+    SharedString(std::string_view s)
+    {
+        internal::sixtyfps_shared_string_from_bytes(this, s.data(), s.size());
+    }
+    SharedString(const SharedString &other)
+    {
+        internal::sixtyfps_shared_string_clone(this, &other);
+    }
+    ~SharedString() { internal::sixtyfps_shared_string_drop(this); }
+    SharedString &operator=(const SharedString &other)
+    {
+        internal::sixtyfps_shared_string_drop(this);
+        internal::sixtyfps_shared_string_clone(this, &other);
+    }
+    SharedString &operator=(std::string_view s)
+    {
+        internal::sixtyfps_shared_string_drop(this);
+        internal::sixtyfps_shared_string_from_bytes(this, s.data(), s.size());
+    }
+    SharedString &operator=(SharedString &&other) { std::swap(inner, other.inner); }
+
+    operator std::string_view() const { return internal::sixtyfps_shared_string_bytes(this); }
+    auto data() const -> const char * { return internal::sixtyfps_shared_string_bytes(this); }
+
+private:
+    void *inner; // opaque
+};
+}