115 lines
3.2 KiB
C++
Executable File
115 lines
3.2 KiB
C++
Executable File
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#ifndef _DUCKDB_THRIFT_TOSTRING_H_
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#define _DUCKDB_THRIFT_TOSTRING_H_ 1
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#include <cmath>
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#include <limits>
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#include <map>
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#include <set>
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#include <sstream>
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#include <string>
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#include "duckdb/common/vector.hpp"
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namespace duckdb_apache {
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namespace thrift {
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template <typename T>
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std::string to_string(const T& t) {
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std::ostringstream o;
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o << t;
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return o.str();
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}
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// TODO: replace the computations below with std::numeric_limits::max_digits10 once C++11
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// is enabled.
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inline std::string to_string(const float& t) {
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std::ostringstream o;
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o.precision(static_cast<std::streamsize>(std::ceil(static_cast<double>(std::numeric_limits<float>::digits * std::log10(2.0f) + 1))));
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o << t;
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return o.str();
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}
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inline std::string to_string(const double& t) {
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std::ostringstream o;
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o.precision(static_cast<std::streamsize>(std::ceil(static_cast<double>(std::numeric_limits<double>::digits * std::log10(2.0f) + 1))));
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o << t;
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return o.str();
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}
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inline std::string to_string(const long double& t) {
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std::ostringstream o;
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o.precision(static_cast<std::streamsize>(std::ceil(static_cast<double>(std::numeric_limits<long double>::digits * std::log10(2.0f) + 1))));
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o << t;
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return o.str();
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}
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template <typename K, typename V>
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std::string to_string(const std::map<K, V>& m);
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template <typename T>
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std::string to_string(const std::set<T>& s);
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template <typename T>
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std::string to_string(const duckdb::vector<T>& t);
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template <typename K, typename V>
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std::string to_string(const typename std::pair<K, V>& v) {
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std::ostringstream o;
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o << to_string(v.first) << ": " << to_string(v.second);
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return o.str();
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}
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template <typename T>
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std::string to_string(const T& beg, const T& end) {
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std::ostringstream o;
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for (T it = beg; it != end; ++it) {
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if (it != beg)
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o << ", ";
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o << to_string(*it);
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}
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return o.str();
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}
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template <typename T>
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std::string to_string(const duckdb::vector<T>& t) {
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std::ostringstream o;
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o << "[" << to_string(t.begin(), t.end()) << "]";
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return o.str();
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}
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template <typename K, typename V>
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std::string to_string(const std::map<K, V>& m) {
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std::ostringstream o;
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o << "{" << to_string(m.begin(), m.end()) << "}";
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return o.str();
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}
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template <typename T>
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std::string to_string(const std::set<T>& s) {
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std::ostringstream o;
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o << "{" << to_string(s.begin(), s.end()) << "}";
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return o.str();
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}
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}
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} // duckdb_apache::thrift
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#endif // _DUCKDB_THRIFT_TOSTRING_H_
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