make_string.h
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/**
* Copyright (c) 2016-present, Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Portions Copyright (c) Microsoft Corporation
#pragma once
#include <locale>
#include <sstream>
namespace onnxruntime {
namespace detail {
inline void MakeStringImpl(std::ostringstream& /*ss*/) noexcept {
}
template <typename T>
inline void MakeStringImpl(std::ostringstream& ss, const T& t) noexcept {
ss << t;
}
template <typename T, typename... Args>
inline void MakeStringImpl(std::ostringstream& ss, const T& t, const Args&... args) noexcept {
MakeStringImpl(ss, t);
MakeStringImpl(ss, args...);
}
} // namespace detail
/**
* Makes a string by concatenating string representations of the arguments.
* This version uses the current locale.
*/
template <typename... Args>
std::string MakeString(const Args&... args) {
std::ostringstream ss;
detail::MakeStringImpl(ss, args...);
return ss.str();
}
/**
* Makes a string by concatenating string representations of the arguments.
* This version uses std::locale::classic().
*/
template <typename... Args>
std::string MakeStringWithClassicLocale(const Args&... args) {
std::ostringstream ss;
ss.imbue(std::locale::classic());
detail::MakeStringImpl(ss, args...);
return ss.str();
}
// MakeString versions for already-a-string types.
inline std::string MakeString(const std::string& str) {
return str;
}
inline std::string MakeString(const char* cstr) {
return cstr;
}
inline std::string MakeStringWithClassicLocale(const std::string& str) {
return str;
}
inline std::string MakeStringWithClassicLocale(const char* cstr) {
return cstr;
}
} // namespace onnxruntime