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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
// SPDX-FileCopyrightText: 2020 - 2025 Kohei Yoshida
//
// SPDX-License-Identifier: MIT
//!code-start: header
#include <mdds/segment_tree.hpp>
#include <string>
#include <iostream>
//!code-end: header
//!code-start: type
using tree_type = mdds::segment_tree<long, std::string>;
//!code-end: type
//!code-start: search-and-print
void search_and_print(const tree_type& tree, long pos)
{
auto results = tree.search(pos);
std::cout << "--" << std::endl;
std::cout << "search at " << pos << std::endl;
std::cout << "number of results: " << results.size() << std::endl;
for (const auto& [start, end, value] : results)
std::cout << "range: [" << start << ":" << end << "); value: " << value << std::endl;
}
//!code-end: search-and-print
void erase_by_iterator(tree_type tree)
{
//!code-start: erase-by-iterator
auto results = tree.search(5);
for (auto it = results.begin(); it != results.end(); ++it)
{
if (it->value == "A")
{
tree.erase(it);
break;
}
}
//!code-end: erase-by-iterator
//!code-start: search-5-after-erase-by-iterator
search_and_print(tree, 5);
//!code-end: search-5-after-erase-by-iterator
}
void erase_by_predicate(tree_type tree)
{
//!code-start: erase-by-predicate
auto pred = [](long start, long end, const std::string& /*value*/)
{
return start <= 5 && 5 < end;
};
auto n = tree.erase_if(pred);
std::cout << "--" << std::endl;
std::cout << n << " segments have been removed" << std::endl;
//!code-end: erase-by-predicate
//!code-start: search-5-after-erase-by-predicate
search_and_print(tree, 5);
//!code-end: search-5-after-erase-by-predicate
}
int main() try
{
//!code-start: insert
tree_type tree;
tree.insert(0, 10, "A");
tree.insert(2, 15, "B");
tree.insert(-2, 5, "C");
tree.insert(5, 22, "D");
tree.insert(20, 35, "E");
//!code-end: insert
//!code-start: build
tree.build_tree();
//!code-end: build
//!code-start: search-5
search_and_print(tree, 5);
//!code-end: search-5
//!code-start: search-0
search_and_print(tree, 0);
//!code-end: search-0
erase_by_iterator(tree);
erase_by_predicate(tree);
}
catch (...)
{
return EXIT_FAILURE;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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