mirror of
https://github.com/RGBCube/serenity
synced 2025-05-24 00:05:07 +00:00
5dd5896588
This is a continuation of the previous commit. Calling initialize() is the first thing that's done after allocating a cell on the JS heap - and in the common case of allocating an object, that's where properties are assigned and intrinsics occasionally accessed. Since those are supposed to live on the realm eventually, this is another step into that direction.
76 lines
1.6 KiB
C++
76 lines
1.6 KiB
C++
/*
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Format.h>
|
|
#include <AK/Forward.h>
|
|
#include <AK/Noncopyable.h>
|
|
#include <AK/StringView.h>
|
|
#include <LibJS/Forward.h>
|
|
|
|
namespace JS {
|
|
|
|
class Cell {
|
|
AK_MAKE_NONCOPYABLE(Cell);
|
|
AK_MAKE_NONMOVABLE(Cell);
|
|
|
|
public:
|
|
virtual void initialize(Realm&) { }
|
|
virtual ~Cell() = default;
|
|
|
|
bool is_marked() const { return m_mark; }
|
|
void set_marked(bool b) { m_mark = b; }
|
|
|
|
enum class State {
|
|
Live,
|
|
Dead,
|
|
};
|
|
|
|
State state() const { return m_state; }
|
|
void set_state(State state) { m_state = state; }
|
|
|
|
virtual StringView class_name() const = 0;
|
|
|
|
class Visitor {
|
|
public:
|
|
void visit(Cell* cell)
|
|
{
|
|
if (cell)
|
|
visit_impl(*cell);
|
|
}
|
|
void visit(Value);
|
|
|
|
protected:
|
|
virtual void visit_impl(Cell&) = 0;
|
|
virtual ~Visitor() = default;
|
|
};
|
|
|
|
virtual bool is_environment() const { return false; }
|
|
virtual void visit_edges(Visitor&) { }
|
|
|
|
Heap& heap() const;
|
|
VM& vm() const;
|
|
|
|
protected:
|
|
Cell() = default;
|
|
|
|
private:
|
|
bool m_mark : 1 { false };
|
|
State m_state : 7 { State::Live };
|
|
};
|
|
|
|
}
|
|
|
|
template<>
|
|
struct AK::Formatter<JS::Cell> : AK::Formatter<FormatString> {
|
|
ErrorOr<void> format(FormatBuilder& builder, JS::Cell const* cell)
|
|
{
|
|
if (!cell)
|
|
return builder.put_string("Cell{nullptr}"sv);
|
|
return Formatter<FormatString>::format(builder, "{}({})"sv, cell->class_name(), cell);
|
|
}
|
|
};
|