ParseRecordObject.h

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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 builtin_ParseRecordObject_h

#define builtin_ParseRecordObject_h

#include "js/HashTable.h"

#include "js/TracingAPI.h"

#include "vm/JSContext.h"

namespace js {

using JSONParseNode = JSString;

class ParseRecordObject {

 public:

  using EntryMap = js::GCHashMap<PropertyKey, ParseRecordObject>;

  // The source text that was parsed for this record. According to the spec, we

  // don't track this for objects and arrays, so it will be a null pointer.

  JSONParseNode* parseNode;

  // For object members, the member key. For arrays, the index. For JSON

  // primitives, it will be undefined.

  JS::PropertyKey key;

  // The original value corresponding to this record, used to determine if the

  // reviver function has modified it.

  Value value;

  // For objects and arrays, the records for the members and elements

  // (respectively). If there are none, or for JSON primitives, we won't

  // allocate an EntryMap.

  UniquePtr<EntryMap> entries;

  ParseRecordObject();

  ParseRecordObject(Handle<js::JSONParseNode*> parseNode, const Value& val);

  ParseRecordObject(ParseRecordObject&& other)

      : parseNode(std::move(other.parseNode)),

        key(std::move(other.key)),

        value(std::move(other.value)),

        entries(std::move(other.entries)) {}

  bool isEmpty() const { return value.isUndefined(); }

  bool addEntries(JSContext* cx, EntryMap&& appendEntries);

  // move assignment

  ParseRecordObject& operator=(ParseRecordObject&& other) noexcept {

    parseNode = other.parseNode;

    key = other.key;

    value = other.value;

    entries = std::move(other.entries);

    return *this;

  void trace(JSTracer* trc);

};

}  // namespace js

#endif