38a54df863
People keep tripping over the old copyrights and copy-pasting them to new files. Search and replace "Cloudius Systems" with "ScyllaDB". Message-Id: <1460013664-25966-1-git-send-email-penberg@scylladb.com>
99 lines
2.4 KiB
C++
99 lines
2.4 KiB
C++
/*
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* Copyright (C) 2015 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero 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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* Scylla 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 Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "core/sstring.hh"
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#include <vector>
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#include <sstream>
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#include <unordered_set>
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#include <experimental/optional>
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template<typename PrintableRange>
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static inline
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sstring join(sstring delimiter, const PrintableRange& items) {
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return join(delimiter, items.begin(), items.end());
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}
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template<typename Iterator>
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static inline
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sstring join(sstring delimiter, Iterator begin, Iterator end) {
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std::ostringstream oss;
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while (begin != end) {
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oss << *begin;
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++begin;
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if (begin != end) {
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oss << delimiter;
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}
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}
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return oss.str();
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}
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template<typename Printable>
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static inline
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sstring
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to_string(const std::vector<Printable>& items) {
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return "[" + join(", ", items) + "]";
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}
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template<typename Printable>
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static inline
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sstring
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to_string(const std::set<Printable>& items) {
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return "{" + join(", ", items) + "}";
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}
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template<typename Printable>
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static inline
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sstring
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to_string(const std::unordered_set<Printable>& items) {
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return "{" + join(", ", items) + "}";
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}
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template<typename Printable>
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static inline
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sstring
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to_string(std::initializer_list<Printable> items) {
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return "[" + join(", ", std::begin(items), std::end(items)) + "]";
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}
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template <typename T>
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std::ostream& operator<<(std::ostream& os, const std::unordered_set<T>& items) {
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os << "{" << join(", ", items) << "}";
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return os;
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}
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template <typename T>
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std::ostream& operator<<(std::ostream& os, const std::set<T>& items) {
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os << "{" << join(", ", items) << "}";
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return os;
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}
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template <typename T>
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std::ostream& operator<<(std::ostream& os, const std::experimental::optional<T>& opt) {
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if (opt) {
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os << "{" << *opt << "}";
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} else {
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os << "{}";
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}
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return os;
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}
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