mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-25 17:25:08 +02:00
23fea4208c
Place Realm's cached declarative environment next to its global object so the asm global access fast paths can fetch the two pointers with a paired load. These handlers never use the intervening GlobalEnvironment pointer directly.
91 lines
3.1 KiB
C++
91 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
|
|
* Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Badge.h>
|
|
#include <AK/HashTable.h>
|
|
#include <AK/OwnPtr.h>
|
|
#include <AK/StringView.h>
|
|
#include <AK/Weakable.h>
|
|
#include <LibGC/CellAllocator.h>
|
|
#include <LibGC/Heap.h>
|
|
#include <LibJS/Bytecode/Builtins.h>
|
|
#include <LibJS/Export.h>
|
|
#include <LibJS/Heap/Cell.h>
|
|
#include <LibJS/Runtime/Intrinsics.h>
|
|
#include <LibJS/Runtime/Value.h>
|
|
|
|
namespace JS {
|
|
|
|
// 9.3 Realms, https://tc39.es/ecma262/#realm-record
|
|
class JS_API Realm final : public Cell {
|
|
GC_CELL(Realm, Cell);
|
|
GC_DECLARE_ALLOCATOR(Realm);
|
|
|
|
public:
|
|
struct HostDefined {
|
|
virtual ~HostDefined() = default;
|
|
|
|
virtual void visit_edges(Cell::Visitor&) { }
|
|
|
|
template<typename T>
|
|
bool fast_is() const = delete;
|
|
|
|
virtual bool is_principal_host_defined() const { return false; }
|
|
virtual bool is_synthetic_host_defined() const { return false; }
|
|
};
|
|
|
|
template<typename T, typename... Args>
|
|
GC::Ref<T> create(Args&&... args)
|
|
{
|
|
auto object = heap().allocate<T>(forward<Args>(args)...);
|
|
static_cast<Cell*>(object)->initialize(*this);
|
|
return *object;
|
|
}
|
|
|
|
static ThrowCompletionOr<NonnullOwnPtr<ExecutionContext>> initialize_host_defined_realm(VM&, Function<Object*(Realm&)> create_global_object, Function<Object*(Realm&)> create_global_this_value);
|
|
|
|
[[nodiscard]] Object& global_object() const { return *m_global_object; }
|
|
void set_global_object(GC::Ref<Object> global) { m_global_object = global; }
|
|
|
|
[[nodiscard]] GlobalEnvironment& global_environment() const { return *m_global_environment; }
|
|
void set_global_environment(GC::Ref<GlobalEnvironment> environment);
|
|
|
|
[[nodiscard]] DeclarativeEnvironment& global_declarative_environment() const { return *m_global_declarative_environment; }
|
|
|
|
[[nodiscard]] Intrinsics const& intrinsics() const { return *m_intrinsics; }
|
|
[[nodiscard]] Intrinsics& intrinsics() { return *m_intrinsics; }
|
|
void set_intrinsics(Badge<Intrinsics>, Intrinsics& intrinsics)
|
|
{
|
|
VERIFY(!m_intrinsics);
|
|
m_intrinsics = &intrinsics;
|
|
}
|
|
|
|
HostDefined* host_defined() { return m_host_defined; }
|
|
HostDefined const* host_defined() const { return m_host_defined; }
|
|
|
|
void set_host_defined(OwnPtr<HostDefined> host_defined) { m_host_defined = move(host_defined); }
|
|
|
|
HashTable<GC::RawPtr<Shape>>& all_prototype_shapes() { return m_all_prototype_shapes; }
|
|
|
|
private:
|
|
Realm() = default;
|
|
|
|
virtual void visit_edges(Visitor&) override;
|
|
|
|
GC::Ptr<Intrinsics> m_intrinsics; // [[Intrinsics]]
|
|
GC::Ptr<Object> m_global_object; // [[GlobalObject]]
|
|
GC::Ptr<DeclarativeEnvironment> m_global_declarative_environment; // Cached from GlobalEnv
|
|
GC::Ptr<GlobalEnvironment> m_global_environment; // [[GlobalEnv]]
|
|
OwnPtr<HostDefined> m_host_defined; // [[HostDefined]]
|
|
|
|
HashTable<GC::RawPtr<Shape>> m_all_prototype_shapes;
|
|
};
|
|
|
|
}
|