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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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/update/update_leaf_node.h"
#include "mongo/util/stringutils.h"
namespace mongo {
void UpdateLeafNode::checkViability(mutablebson::Element element,
const FieldRef& pathToCreate,
const FieldRef& pathTaken) {
invariant(!pathToCreate.empty());
if (element.getType() == BSONType::Object) {
// 'pathTaken' leads to an object, so we know it will be possible to create 'pathToCreate'
// at that path.
} else if (element.getType() == BSONType::Array &&
parseUnsignedBase10Integer(pathToCreate.getPart(0))) {
// 'pathTaken' leads to an array, so we know we can add elements at that path so long as the
// next component is a valid array index. We don't check, but we expect that the index will
// be out of bounds. (Otherwise it would be part of 'pathTaken' and we wouldn't need to
// create it.)
} else {
uasserted(ErrorCodes::PathNotViable,
str::stream() << "Cannot use the part (" << pathToCreate.getPart(0) << ") of ("
<< pathTaken.dottedField()
<< "."
<< pathToCreate.dottedField()
<< ") to traverse the element ({"
<< element.toString()
<< "})");
}
}
} // namespace
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