LibWeb/IDB: Implement delete_records_from_an_object_store

Author: https://github.com/stelar7
Commit: afe7951af4
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4317
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/kennethmyhra ✅

Libraries/LibWeb/IndexedDB/Internal/Algorithms.cpp

@@ -1308,4 +1308,15 @@ void inject_a_key_into_a_value_using_a_key_path(JS::Realm& realm, JS::Value valu
     VERIFY(status);
 }
 
+// https://w3c.github.io/IndexedDB/#delete-records-from-an-object-store
+void delete_records_from_an_object_store(GC::Ref<ObjectStore> store, GC::Ref<IDBKeyRange> range)
+{
+    // 1. Remove all records, if any, from store’s list of records with key in range.
+    store->remove_records_in_range(range);
+
+    // FIXME: 2. For each index which references store, remove every record from index’s list of records whose value is in range, if any such records exist.
+
+    // 3. Return undefined.
+}
+
 }

Libraries/LibWeb/IndexedDB/Internal/Algorithms.h

@@ -39,5 +39,6 @@ GC::Ref<IDBRequest> asynchronously_execute_a_request(JS::Realm&, IDBRequestSourc
 ErrorOr<u64> generate_a_key(GC::Ref<ObjectStore>);
 void possibly_update_the_key_generator(GC::Ref<ObjectStore>, GC::Ref<Key>);
 void inject_a_key_into_a_value_using_a_key_path(JS::Realm&, JS::Value, GC::Ref<Key>, KeyPath const&);
+void delete_records_from_an_object_store(GC::Ref<ObjectStore>, GC::Ref<IDBKeyRange>);
 
 }

Libraries/LibWeb/IndexedDB/Internal/ObjectStore.cpp

@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <LibWeb/IndexedDB/IDBKeyRange.h>
 #include <LibWeb/IndexedDB/Internal/ObjectStore.h>
 
 namespace Web::IndexedDB {
@@ -33,6 +34,17 @@ void ObjectStore::visit_edges(Visitor& visitor)
     Base::visit_edges(visitor);
     visitor.visit(m_database);
     visitor.visit(m_indexes);
+
+    for (auto& record : m_records) {
+        visitor.visit(record.key);
+    }
+}
+
+void ObjectStore::remove_records_in_range(GC::Ref<IDBKeyRange> range)
+{
+    m_records.remove_all_matching([&](auto const& record) {
+        return range->is_in_range(record.key);
+    });
 }
 
 }

Libraries/LibWeb/IndexedDB/Internal/ObjectStore.h

@@ -23,6 +23,12 @@ namespace Web::IndexedDB {
 
 using KeyPath = Variant<String, Vector<String>>;
 
+// https://w3c.github.io/IndexedDB/#object-store-record
+struct Record {
+    GC::Ref<Key> key;
+    HTML::SerializationRecord value;
+};
+
 // https://w3c.github.io/IndexedDB/#object-store-construct
 class ObjectStore : public JS::Cell {
     GC_CELL(ObjectStore, JS::Cell);
@@ -42,6 +48,8 @@ public:
 
     GC::Ref<Database> database() const { return m_database; }
 
+    void remove_records_in_range(GC::Ref<IDBKeyRange> range);
+
 protected:
     virtual void visit_edges(Visitor&) override;
 
@@ -62,6 +70,9 @@ private:
 
     // An object store optionally has a key generator.
     Optional<KeyGenerator> m_key_generator;
+
+    // An object store has a list of records
+    Vector<Record> m_records;
 };
 
 }