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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <jsapi.h>
#include <string>
#include "mongo/bson/bsonobj.h"
#include "mongo/scripting/mozjs/objectwrapper.h"
namespace mongo {
namespace mozjs {
/**
* Writes C++ values out of JS Values
*
* originalBSON is a hack to keep integer types in their original type when
* they're read out, manipulated in js and saved back.
*/
class ValueWriter {
public:
ValueWriter(JSContext* cx, JS::HandleValue value);
BSONObj toBSON();
/**
* These coercions flow through JS::To_X. I.e. they can call toString() or
* toNumber()
*/
std::string toString();
StringData toStringData(JSStringWrapper* jsstr);
int type();
double toNumber();
int32_t toInt32();
int64_t toInt64();
Decimal128 toDecimal128();
bool toBoolean();
/**
* Provides the type of the value. For objects, it fetches the class name if possible.
*/
std::string typeAsString();
/**
* Writes the value into a bsonobjbuilder under the name in sd.
*
* We take WriteFieldRecursionFrames so we can push a new object on if the underlying
* value is an object. This allows us to recurse without C++ stack frames.
*
* Look in toBSON on ObjectWrapper for the top of that loop.
*/
void writeThis(BSONObjBuilder* b,
StringData sd,
ObjectWrapper::WriteFieldRecursionFrames* frames);
void setOriginalBSON(BSONObj* obj);
private:
/**
* Writes the object into a bsonobjbuilder under the name in sd.
*/
void _writeObject(BSONObjBuilder* b,
StringData sd,
ObjectWrapper::WriteFieldRecursionFrames* frames);
JSContext* _context;
JS::HandleValue _value;
BSONObj* _originalParent;
};
} // namespace mozjs
} // namespace mongo
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