65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/* Copyright 2020, Michele Santullo
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* This file is part of user-gcc.
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*
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* User-gcc is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* User-gcc is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with user-gcc. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <string>
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#include <string_view>
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namespace duck {
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inline std::string to_string (std::string_view sv) {
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return std::string((sv.empty() ? static_cast<const char*>("") : sv.data()), sv.size());
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}
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inline std::string to_string (const char* str) {
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return std::string(str ? str : static_cast<const char*>(""));
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}
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inline std::string to_string (std::string str) {
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return str;
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}
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inline std::string_view to_string_view (const char* str) noexcept {
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return (str ? std::string_view{str} : std::string_view{""});
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}
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template <std::size_t S>
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inline std::string_view to_string_view (const char (&str)[S]) noexcept {
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return std::string_view(str, S);
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}
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inline std::string operator+ (std::string_view a, std::string_view b) {
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std::string ret(to_string(a));
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ret += b;
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return ret;
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}
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inline std::string operator+ (std::string_view a, const std::string& b) {
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std::string ret(to_string(a));
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ret += b;
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return ret;
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}
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inline std::string operator+ (std::string a, std::string_view b) {
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a += b;
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return a;
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}
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inline std::string operator+ (const char* a, std::string_view b) {
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return to_string(a) + b;
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}
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} //namespace duck
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