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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef vm_RecordType_h
#define vm_RecordType_h
#include <cstdint>
#include <functional>
#include "js/TypeDecls.h"
#include "vm/ArrayObject.h"
#include "vm/NativeObject.h"
#include "vm/Shape.h"
namespace JS {
class RecordType;
}
namespace js {
extern JSString* RecordToSource(JSContext* cx, JS::RecordType* rec);
}
namespace JS {
class RecordType final : public js::NativeObject {
friend JSString* js::RecordToSource(JSContext* cx, RecordType* rec);
public:
enum { SORTED_KEYS_SLOT = 0, IS_ATOMIZED_SLOT, SLOT_COUNT };
static const js::ClassSpec classSpec_;
static const JSClass class_;
static RecordType* createUninitialized(JSContext* cx, uint32_t initialLength);
bool initializeNextProperty(JSContext* cx, Handle<PropertyKey> key,
HandleValue value);
bool finishInitialization(JSContext* cx);
static js::Shape* getInitialShape(JSContext* cx);
static bool copy(JSContext* cx, Handle<RecordType*> in,
MutableHandle<RecordType*> out);
uint32_t length();
bool getOwnProperty(JSContext* cx, HandleId id, MutableHandleValue vp) const;
static bool sameValueZero(JSContext* cx, RecordType* lhs, RecordType* rhs,
bool* equal);
static bool sameValue(JSContext* cx, RecordType* lhs, RecordType* rhs,
bool* equal);
js::ArrayObject* keys() const {
return &getFixedSlot(SORTED_KEYS_SLOT).toObject().as<js::ArrayObject>();
}
using FieldHasher = std::function<js::HashNumber(const Value& child)>;
js::HashNumber hash(const FieldHasher& hasher);
bool ensureAtomized(JSContext* cx);
bool isAtomized() const { return getFixedSlot(IS_ATOMIZED_SLOT).toBoolean(); }
// This can be used to compare atomized records.
static bool sameValueZero(RecordType* lhs, RecordType* rhs);
private:
template <bool Comparator(JSContext*, HandleValue, HandleValue, bool*)>
static bool sameValueWith(JSContext* cx, RecordType* lhs, RecordType* rhs,
bool* equal);
};
} // namespace JS
#endif
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