userver: userver/dump/meta_containers.hpp Source File
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meta_containers.hpp
1#pragma once
2
3#include <iterator>
4#include <map>
5#include <set>
6#include <type_traits>
7#include <unordered_map>
8#include <unordered_set>
9#include <utility>
10#include <vector>
11
12#include <userver/dump/meta.hpp>
13#include <userver/utils/meta.hpp>
14
15USERVER_NAMESPACE_BEGIN
16
17namespace dump {
18
19/// @{
20/// Customization point: insert an element into a container
21template <typename T, typename Alloc>
22void Insert(std::vector<T, Alloc>& cont, T&& elem) {
23 cont.push_back(std::forward<T>(elem));
24}
25
26template <typename K, typename V, typename Comp, typename Alloc>
27void Insert(std::map<K, V, Comp, Alloc>& cont, std::pair<const K, V>&& elem) {
28 cont.insert(std::move(elem));
29}
30
31template <typename K, typename V, typename Hash, typename Eq, typename Alloc>
32void Insert(std::unordered_map<K, V, Hash, Eq, Alloc>& cont, std::pair<const K, V>&& elem) {
33 cont.insert(std::move(elem));
34}
35
36template <typename T, typename Comp, typename Alloc>
37void Insert(std::set<T, Comp, Alloc>& cont, T&& elem) {
38 cont.insert(std::forward<T>(elem));
39}
40
41template <typename T, typename Hash, typename Eq, typename Alloc>
42void Insert(std::unordered_set<T, Hash, Eq, Alloc>& cont, T&& elem) {
43 cont.insert(std::forward<T>(elem));
44}
45/// @}
46
47namespace impl {
48
49template <typename T>
50using InsertResult = decltype(dump::Insert(std::declval<T&>(), std::declval<meta::RangeValueType<T>&&>()));
51
52} // namespace impl
53
54/// Check if a range is a container
55template <typename T>
58
59} // namespace dump
60
61USERVER_NAMESPACE_END