ladybird/Libraries/LibJS/Runtime/BigIntObject.h

/*
 * Copyright (c) 2020-2022, Linus Groh <linusg@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <LibJS/Runtime/BigInt.h>
#include <LibJS/Runtime/Object.h>

namespace JS {

class BigIntObject final : public Object {
    JS_OBJECT(BigIntObject, Object);
    JS_DECLARE_ALLOCATOR(BigIntObject);

public:
    static NonnullGCPtr<BigIntObject> create(Realm&, BigInt&);

    virtual ~BigIntObject() override = default;

    BigInt const& bigint() const { return m_bigint; }
    BigInt& bigint() { return m_bigint; }

private:
    BigIntObject(BigInt&, Object& prototype);

    virtual void visit_edges(Visitor&) override;

    NonnullGCPtr<BigInt> m_bigint;
};

}
LibJS: Add BigInt 2020-06-06 01:14:10 +01:00			`/*`
LibJS: Convert BigIntObject::create() to NonnullGCPtr 2022-12-13 20:49:50 +00:00			`* Copyright (c) 2020-2022, Linus Groh <linusg@serenityos.org>`
LibJS: Add BigInt 2020-06-06 01:14:10 +01:00			`*`
Everything: Move to SPDX license identifiers in all files. SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt * 2021-04-22 01:24:48 -07:00			`* SPDX-License-Identifier: BSD-2-Clause`
LibJS: Add BigInt 2020-06-06 01:14:10 +01:00			`*/`

			`#pragma once`

			`#include <LibJS/Runtime/BigInt.h>`
			`#include <LibJS/Runtime/Object.h>`

			`namespace JS {`

			`class BigIntObject final : public Object {`
LibJS+LibWeb: Add JS::Object::inherits(class_name) To allow implementing the DOM class hierarchy in JS bindings, this patch adds an inherits() function that can be used to ask an Object if it inherits from a specific C++ class (by name). The necessary overrides are baked into each Object subclass by the new JS_OBJECT macro, which works similarly to C_OBJECT in LibCore. Thanks to @Dexesttp for suggesting this approach. :^) 2020-06-21 15:14:02 +02:00			`JS_OBJECT(BigIntObject, Object);`
LibJS: Segregate GC-allocated objects by type This patch adds two macros to declare per-type allocators: - JS_DECLARE_ALLOCATOR(TypeName) - JS_DEFINE_ALLOCATOR(TypeName) When used, they add a type-specific CellAllocator that the Heap will delegate allocation requests to. The result of this is that GC objects of the same type always end up within the same HeapBlock, drastically reducing the ability to perform type confusion attacks. It also improves HeapBlock utilization, since each block now has cells sized exactly to the type used within that block. (Previously we only had a handful of block sizes available, and most GC allocations ended up with a large amount of slack in their tails.) There is a small performance hit from this, but I'm sure we can make up for it elsewhere. Note that the old size-based allocators still exist, and we fall back to them for any type that doesn't have its own CellAllocator. 2023-11-19 09:45:05 +01:00			`JS_DECLARE_ALLOCATOR(BigIntObject);`
LibJS+LibWeb: Add JS::Object::inherits(class_name) To allow implementing the DOM class hierarchy in JS bindings, this patch adds an inherits() function that can be used to ask an Object if it inherits from a specific C++ class (by name). The necessary overrides are baked into each Object subclass by the new JS_OBJECT macro, which works similarly to C_OBJECT in LibCore. Thanks to @Dexesttp for suggesting this approach. :^) 2020-06-21 15:14:02 +02:00
LibJS: Add BigInt 2020-06-06 01:14:10 +01:00			`public:`
LibJS: Convert BigIntObject::create() to NonnullGCPtr 2022-12-13 20:49:50 +00:00			`static NonnullGCPtr<BigIntObject> create(Realm&, BigInt&);`
LibJS: Add BigInt 2020-06-06 01:14:10 +01:00
Libraries: Use default constructors/destructors in LibJS https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler." 2022-03-14 10:25:06 -06:00			`virtual ~BigIntObject() override = default;`
LibJS: Add BigInt 2020-06-06 01:14:10 +01:00
LibJS: Convert this_bigint_value() to ThrowCompletionOr 2021-10-18 19:44:46 +01:00			`BigInt const& bigint() const { return m_bigint; }`
			`BigInt& bigint() { return m_bigint; }`

LibJS: Add BigInt 2020-06-06 01:14:10 +01:00			`private:`
LibJS: Hide all the constructors! Now that the GC allocator is able to invoke Cell subclass constructors directly via friendship, we no longer need to keep them public. :^) 2022-08-28 23:51:28 +02:00			`BigIntObject(BigInt&, Object& prototype);`

LibJS: Rename Cell::visit_children() => Cell::visit_edges() The GC heap is really a graph of cells, so "children" didn't quite feel appropriate here. 2020-11-28 14:33:36 +01:00			`virtual void visit_edges(Visitor&) override;`
LibJS: Add BigInt 2020-06-06 01:14:10 +01:00
LibJS+LibWeb: Wrap raw JS::Cell*/& fields in GCPtr/NonnullGCPtr 2023-02-26 16:09:02 -07:00			`NonnullGCPtr<BigInt> m_bigint;`
LibJS: Add BigInt 2020-06-06 01:14:10 +01:00			`};`

			`}`