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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_TupleType_h
#define vm_TupleType_h
#include <cstdint>
#include <functional>
#include "vm/JSContext.h"
#include "vm/NativeObject.h"
namespace JS {
class TupleType final : public js::NativeObject {
public:
static const js::ClassSpec classSpec_;
static const JSClass class_;
static const JSClass protoClass_;
public:
static TupleType* create(JSContext* cx, uint32_t length,
const Value* elements);
static TupleType* createUninitialized(JSContext* cx, uint32_t initialLength);
static TupleType* createUnchecked(JSContext* cx,
Handle<js::ArrayObject*> aObj);
bool initializeNextElement(JSContext* cx, HandleValue elt);
void finishInitialization(JSContext* cx);
static js::Shape* getInitialShape(JSContext* cx);
static bool copy(JSContext* cx, Handle<TupleType*> in,
MutableHandle<TupleType*> out);
bool getOwnProperty(HandleId id, MutableHandleValue vp) const;
inline uint32_t length() const { return getElementsHeader()->length; }
// Methods defined on Tuple.prototype
[[nodiscard]] static bool lengthAccessor(JSContext* cx, unsigned argc,
Value* vp);
// Comparison functions
static bool sameValueZero(JSContext* cx, TupleType* lhs, TupleType* rhs,
bool* equal);
static bool sameValue(JSContext* cx, TupleType* lhs, TupleType* rhs,
bool* equal);
using ElementHasher = std::function<js::HashNumber(const Value& child)>;
js::HashNumber hash(const ElementHasher& hasher) const;
bool ensureAtomized(JSContext* cx);
bool isAtomized() const { return getElementsHeader()->tupleIsAtomized(); }
// This can be used to compare atomized tuples.
static bool sameValueZero(TupleType* lhs, TupleType* rhs);
static TupleType& thisTupleValue(const Value& val);
private:
template <bool Comparator(JSContext*, HandleValue, HandleValue, bool*)>
static bool sameValueWith(JSContext* cx, TupleType* lhs, TupleType* rhs,
bool* equal);
};
} // namespace JS
namespace js {
extern JSString* TupleToSource(JSContext* cx, Handle<TupleType*> tup);
bool IsTuple(const Value& v);
extern bool tuple_toReversed(JSContext* cx, unsigned argc, Value* vp);
extern bool tuple_with(JSContext* cx, unsigned argc, Value* vp);
extern bool tuple_slice(JSContext* cx, unsigned argc, Value* vp);
extern bool tuple_is_tuple(JSContext* cx, unsigned argc, Value* vp);
extern bool tuple_value_of(JSContext* cx, unsigned argc, Value* vp);
extern bool tuple_of(JSContext* cx, unsigned argc, Value* vp);
extern bool tuple_construct(JSContext* cx, unsigned argc, Value* vp);
} // namespace js
#endif
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