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https://github.com/RGBCube/serenity
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LibJS: Don't use Handle<Value> for JS::Object private fields
There's no reason to use handles here, we can just mark private element values from objects that store them.
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4 changed files with 22 additions and 14 deletions
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@ -519,7 +519,7 @@ ThrowCompletionOr<void> Object::private_field_add(PrivateName const& name, Value
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m_private_elements = make<Vector<PrivateElement>>();
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// 4. Append PrivateElement { [[Key]]: P, [[Kind]]: field, [[Value]]: value } to O.[[PrivateElements]].
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m_private_elements->empend(name, PrivateElement::Kind::Field, make_handle(value));
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m_private_elements->empend(name, PrivateElement::Kind::Field, value);
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// 5. Return unused.
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return {};
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@ -570,14 +570,14 @@ ThrowCompletionOr<Value> Object::private_get(PrivateName const& name)
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// 3. If entry.[[Kind]] is either field or method, then
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if (entry->kind != PrivateElement::Kind::Accessor) {
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// a. Return entry.[[Value]].
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return value.value();
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return value;
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}
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// Assert: entry.[[Kind]] is accessor.
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VERIFY(value.value().is_accessor());
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VERIFY(value.is_accessor());
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// 6. Let getter be entry.[[Get]].
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auto* getter = value.value().as_accessor().getter();
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auto* getter = value.as_accessor().getter();
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// 5. If entry.[[Get]] is undefined, throw a TypeError exception.
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if (!getter)
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@ -602,7 +602,7 @@ ThrowCompletionOr<void> Object::private_set(PrivateName const& name, Value value
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// 3. If entry.[[Kind]] is field, then
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if (entry->kind == PrivateElement::Kind::Field) {
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// a. Set entry.[[Value]] to value.
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entry->value = make_handle(value);
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entry->value = value;
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return {};
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}
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// 4. Else if entry.[[Kind]] is method, then
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@ -617,10 +617,10 @@ ThrowCompletionOr<void> Object::private_set(PrivateName const& name, Value value
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VERIFY(entry->kind == PrivateElement::Kind::Accessor);
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auto& accessor = entry->value;
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VERIFY(accessor.value().is_accessor());
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VERIFY(accessor.is_accessor());
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// c. Let setter be entry.[[Set]].
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auto* setter = accessor.value().as_accessor().setter();
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auto* setter = accessor.as_accessor().setter();
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// b. If entry.[[Set]] is undefined, throw a TypeError exception.
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if (!setter)
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@ -1386,6 +1386,11 @@ void Object::visit_edges(Cell::Visitor& visitor)
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m_indexed_properties.for_each_value([&visitor](auto& value) {
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visitor.visit(value);
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});
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if (m_private_elements) {
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for (auto& private_element : *m_private_elements)
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visitor.visit(private_element.value);
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}
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}
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// 7.1.1.1 OrdinaryToPrimitive ( O, hint ), https://tc39.es/ecma262/#sec-ordinarytoprimitive
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