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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 <string>
#include <vector>
/**
* Utility macro to construct a std::vector<std::string> from a sequence of C-style
* strings.
*
* Usage: MONGO_MAKE_STRING_VECTOR("a", "b", "c") returns a vector containing
* std::strings "a", "b", "c", in that order.
*/
#define MONGO_MAKE_STRING_VECTOR(...) ::mongo::_makeStringVector(0, __VA_ARGS__, NULL)
namespace mongo {
/**
* Create a vector of strings from varargs of C-style strings.
*
* WARNING: Only intended for use by MONGO_MAKE_STRING_VECTOR macro, defined above. Aborts
* ungracefully if you misuse it, so stick to the macro.
*
* The first parameter is ignored in all circumstances. The subsequent parameters must be
* const char* C-style strings, or NULL. Of these parameters, at least one must be
* NULL. Parameters at and beyond the NULL are not inserted. Typically, the NULL will be
* the last parameter. The MONGO_MAKE_STRING_VECTOR macro enforces this.
*
* Returns a vector of std::strings.
*/
std::vector<std::string> _makeStringVector(int ignored, ...);
} // namespace mongo
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