去除所有访问级别

2026-08-07 17:50:04 +08:00
parent 0c7fac70b2
commit 3205dd84e8
17 changed files with 2086 additions and 2424 deletions
@@ -25,11 +25,27 @@ struct Property_Descriptor {
    using value_type = typename Accessor::value_type;
    using storage_identity = typename Accessor::storage_identity;
    using attribute_types = Type_List<Attributes...>;
-    static constexpr bool readable = Accessor::readable;
-    static constexpr bool writable = Accessor::writable;
+    using capability_type = find_attribute_in_list_t<Capability_Category, attribute_types>;
+    static constexpr Property_Capability intrinsic_capability = [] {
+        if constexpr (!std::same_as<capability_type, void>) {
+            return capability_type::value;
+        } else if constexpr (Accessor::readable && Accessor::writable) {
+            return Property_Capability::read_write;
+        } else if constexpr (Accessor::readable) {
+            return Property_Capability::read;
+        } else if constexpr (Accessor::writable) {
+            return Property_Capability::write;
+        } else {
+            return Property_Capability::none;
+        }
+    }();
+    static constexpr bool readable = Accessor::readable && (intrinsic_capability == Property_Capability::read || intrinsic_capability == Property_Capability::read_write);
+    static constexpr bool writable = Accessor::writable && (intrinsic_capability == Property_Capability::write || intrinsic_capability == Property_Capability::read_write);
    static constexpr bool synchronized_view_read = Accessor::synchronized_view_read;
    static constexpr bool trusted_object_access = Accessor::trusted_object_access;
    static_assert(unique_single_value_categories<Attributes...>());
+    static_assert(!((intrinsic_capability == Property_Capability::read || intrinsic_capability == Property_Capability::read_write) && !Accessor::readable), "property capability requests read from a non-readable accessor");
+    static_assert(!((intrinsic_capability == Property_Capability::write || intrinsic_capability == Property_Capability::read_write) && !Accessor::writable), "property capability requests write from a non-writable accessor");
    using key_type = find_attribute_in_list_t<Key_Category, attribute_types>;
    static_assert(!std::same_as<key_type, void>);
    static_assert(key_type::value.view().size() > 0);