1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-28 06:37:35 +00:00

LibJS: De-duplicate ClassFieldDefinition Records

This was defined twice, despite being the very same thing:
- ClassElement::ClassFieldDefinition
- ECMAScriptFunctionObject::InstanceField

Move the former to a new header and use it everywhere. Also update the
define_field() AO to take a single field instead of separate name and
initializer arguments.
This commit is contained in:
Linus Groh 2022-04-20 00:06:45 +02:00
parent 7a02d33cd5
commit e815d3f9ce
9 changed files with 66 additions and 41 deletions

View file

@ -0,0 +1,22 @@
/*
* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Forward.h>
#include <LibJS/Forward.h>
namespace JS {
using ClassElementName = Variant<PropertyKey, PrivateName>;
// 6.2.10 The ClassFieldDefinition Record Specification Type, https://tc39.es/ecma262/#sec-classfielddefinition-record-specification-type
struct ClassFieldDefinition {
ClassElementName name; // [[Name]]
Handle<ECMAScriptFunctionObject> initializer; // [[Initializer]]
};
}

View file

@ -299,8 +299,6 @@ void ECMAScriptFunctionObject::visit_edges(Visitor& visitor)
for (auto& field : m_fields) {
if (auto* property_key_ptr = field.name.get_pointer<PropertyKey>(); property_key_ptr && property_key_ptr->is_symbol())
visitor.visit(property_key_ptr->as_symbol());
visitor.visit(field.initializer);
}
}
@ -886,9 +884,4 @@ void ECMAScriptFunctionObject::set_name(FlyString const& name)
VERIFY(success);
}
void ECMAScriptFunctionObject::add_field(ClassElement::ClassElementName property_key, ECMAScriptFunctionObject* initializer)
{
m_fields.empend(property_key, initializer);
}
}

View file

@ -68,13 +68,8 @@ public:
String const& source_text() const { return m_source_text; }
void set_source_text(String source_text) { m_source_text = move(source_text); }
struct InstanceField {
Variant<PropertyKey, PrivateName> name;
ECMAScriptFunctionObject* initializer { nullptr };
};
Vector<InstanceField> const& fields() const { return m_fields; }
void add_field(Variant<PropertyKey, PrivateName> property_key, ECMAScriptFunctionObject* initializer);
Vector<ClassFieldDefinition> const& fields() const { return m_fields; }
void add_field(ClassFieldDefinition field) { m_fields.append(move(field)); }
Vector<PrivateElement> const& private_methods() const { return m_private_methods; }
void add_private_method(PrivateElement method) { m_private_methods.append(move(method)); };
@ -123,7 +118,7 @@ private:
ScriptOrModule m_script_or_module; // [[ScriptOrModule]]
Object* m_home_object { nullptr }; // [[HomeObject]]
String m_source_text; // [[SourceText]]
Vector<InstanceField> m_fields; // [[Fields]]
Vector<ClassFieldDefinition> m_fields; // [[Fields]]
Vector<PrivateElement> m_private_methods; // [[PrivateMethods]]
Variant<PropertyKey, PrivateName, Empty> m_class_field_initializer_name; // [[ClassFieldInitializerName]]
ConstructorKind m_constructor_kind : 1 { ConstructorKind::Base }; // [[ConstructorKind]]

View file

@ -10,6 +10,7 @@
#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/Accessor.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/ClassFieldDefinition.h>
#include <LibJS/Runtime/ECMAScriptFunctionObject.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GlobalObject.h>
@ -556,17 +557,36 @@ ThrowCompletionOr<void> Object::private_set(PrivateName const& name, Value value
}
// 7.3.32 DefineField ( receiver, fieldRecord ), https://tc39.es/ecma262/#sec-definefield
ThrowCompletionOr<void> Object::define_field(Variant<PropertyKey, PrivateName> name, ECMAScriptFunctionObject* initializer)
ThrowCompletionOr<void> Object::define_field(ClassFieldDefinition const& field)
{
Value init_value = js_undefined();
if (initializer)
init_value = TRY(call(global_object(), *initializer, this));
// 1. Let fieldName be fieldRecord.[[Name]].
auto const& field_name = field.name;
if (auto* property_key_ptr = name.get_pointer<PropertyKey>())
TRY(create_data_property_or_throw(*property_key_ptr, init_value));
else
TRY(private_field_add(name.get<PrivateName>(), init_value));
// 2. Let initializer be fieldRecord.[[Initializer]].
auto const& initializer = field.initializer;
auto init_value = js_undefined();
// 3. If initializer is not empty, then
if (!initializer.is_null()) {
// a. Let initValue be ? Call(initializer, receiver).
init_value = TRY(call(global_object(), initializer.cell(), this));
}
// 4. Else, let initValue be undefined.
// 5. If fieldName is a Private Name, then
if (field_name.has<PrivateName>()) {
// a. Perform ? PrivateFieldAdd(receiver, fieldName, initValue).
TRY(private_field_add(field_name.get<PrivateName>(), init_value));
}
// 6. Else,
else {
// a. Assert: IsPropertyKey(fieldName) is true.
// b. Perform ? CreateDataPropertyOrThrow(receiver, fieldName, initValue).
TRY(create_data_property_or_throw(field_name.get<PropertyKey>(), init_value));
}
// 7. Return unused.
return {};
}

View file

@ -110,7 +110,7 @@ public:
ThrowCompletionOr<void> private_method_or_accessor_add(PrivateElement element);
ThrowCompletionOr<Value> private_get(PrivateName const& name);
ThrowCompletionOr<void> private_set(PrivateName const& name, Value value);
ThrowCompletionOr<void> define_field(Variant<PropertyKey, PrivateName> name, ECMAScriptFunctionObject* initializer);
ThrowCompletionOr<void> define_field(ClassFieldDefinition const&);
// 10.1 Ordinary Object Internal Methods and Internal Slots, https://tc39.es/ecma262/#sec-ordinary-object-internal-methods-and-internal-slots

View file

@ -600,7 +600,7 @@ ThrowCompletionOr<void> VM::initialize_instance_elements(Object& object, ECMAScr
TRY(object.private_method_or_accessor_add(method));
for (auto& field : constructor.fields())
TRY(object.define_field(field.name, field.initializer));
TRY(object.define_field(field));
return {};
}