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LibWeb/IDB: Implement convert_a_value_to_a_multi_entry_key

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stelar7 2025-04-11 10:46:21 +02:00 committed by Andrew Kaster
parent 8bfbcf6d9b
commit f36c4d88ff
2 changed files with 56 additions and 0 deletions
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55
Libraries/LibWeb/IndexedDB/Internal/Algorithms.cpp
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@ -800,4 +800,59 @@ WebIDL::ExceptionOr<JS::Value> clone_in_realm(JS::Realm& target_realm, JS::Value
return clone;
}
// https://w3c.github.io/IndexedDB/#convert-a-value-to-a-multientry-key
WebIDL::ExceptionOr<ErrorOr<GC::Ref<Key>>> convert_a_value_to_a_multi_entry_key(JS::Realm& realm, JS::Value value)
{
// 1. If input is an Array exotic object, then:
if (value.is_object() && is<JS::Array>(value.as_object())) {
// 1. Let len be ? ToLength( ? Get(input, "length")).
auto len = TRY(length_of_array_like(realm.vm(), value.as_object()));
// 2. Let seen be a new set containing only input.
Vector<JS::Value> seen { value };
// 3. Let keys be a new empty list.
Vector<GC::Root<Key>> keys;
// 4. Let index be 0.
u64 index = 0;
// 5. While index is less than len:
while (index < len) {
// 1. Let entry be Get(input, index).
auto maybe_entry = value.as_object().get(index);
// 2. If entry is not an abrupt completion, then:
if (!maybe_entry.is_error()) {
// 1. Let key be the result of converting a value to a key with arguments entry and seen.
auto completion_key = convert_a_value_to_a_key(realm, maybe_entry.release_value(), seen);
// 2. If key is not invalid or an abrupt completion, and there is no item in keys equal to key, then append key to keys.
if (!completion_key.is_error()) {
auto maybe_key = completion_key.release_value();
if (!maybe_key.is_error()) {
auto key = maybe_key.release_value();
if (!keys.contains_slow(key))
keys.append(key);
}
}
}
// 3. Increase index by 1.
index++;
}
// 6. Return a new array key with value set to keys.
return Key::create_array(realm, keys);
}
// 2. Otherwise, return the result of converting a value to a key with argument input. Rethrow any exceptions.
return convert_a_value_to_a_key(realm, value);
}
}

1
Libraries/LibWeb/IndexedDB/Internal/Algorithms.h
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@ -29,5 +29,6 @@ bool is_valid_key_path(KeyPath const&);
GC::Ref<HTML::DOMStringList> create_a_sorted_name_list(JS::Realm&, Vector<String>);
void commit_a_transaction(JS::Realm&, GC::Ref<IDBTransaction>);
WebIDL::ExceptionOr<JS::Value> clone_in_realm(JS::Realm&, JS::Value, GC::Ref<IDBTransaction>);
WebIDL::ExceptionOr<ErrorOr<GC::Ref<Key>>> convert_a_value_to_a_multi_entry_key(JS::Realm&, JS::Value);
}