| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2023 Christian Mazakas | ||
| 3 | // Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com) | ||
| 4 | // | ||
| 5 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 6 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 7 | // | ||
| 8 | // Official repository: https://github.com/cppalliance/http_proto | ||
| 9 | // | ||
| 10 | |||
| 11 | #ifndef BOOST_HTTP_PROTO_DETAIL_TYPE_INDEX_HPP | ||
| 12 | #define BOOST_HTTP_PROTO_DETAIL_TYPE_INDEX_HPP | ||
| 13 | |||
| 14 | #include <boost/container_hash/hash.hpp> | ||
| 15 | #include <boost/core/typeinfo.hpp> | ||
| 16 | #include <boost/config.hpp> | ||
| 17 | |||
| 18 | namespace boost { | ||
| 19 | namespace http_proto { | ||
| 20 | namespace detail { | ||
| 21 | |||
| 22 | struct type_index_impl { | ||
| 23 | private: | ||
| 24 | boost::core::typeinfo const *pdata_ = nullptr; | ||
| 25 | |||
| 26 | 856 | std::size_t get_raw_name_length() const noexcept { | |
| 27 | // Boost.TypeIndex has a dramatically more sophisticated implementation here | ||
| 28 | // see if this eventually turns out to matter and if it does, essentially | ||
| 29 | // just do more copy-paste | ||
| 30 | 856 | return std::strlen(raw_name()); | |
| 31 | } | ||
| 32 | |||
| 33 | 792 | bool equal(type_index_impl const &rhs) const noexcept { | |
| 34 |
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792 | return raw_name() == rhs.raw_name() || |
| 35 |
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792 | !std::strcmp(raw_name(), rhs.raw_name()); |
| 36 | } | ||
| 37 | |||
| 38 | public: | ||
| 39 | 824 | type_index_impl(boost::core::typeinfo const &type_info) noexcept | |
| 40 | 824 | : pdata_(&type_info) {} | |
| 41 | |||
| 42 | type_index_impl(type_index_impl const &) = default; | ||
| 43 | type_index_impl &operator=(type_index_impl const &) = default; | ||
| 44 | |||
| 45 | ~type_index_impl() = default; | ||
| 46 | |||
| 47 | 1646 | template <class T> static type_index_impl type_id() noexcept { | |
| 48 | 1646 | return type_index_impl(BOOST_CORE_TYPEID(T)); | |
| 49 | } | ||
| 50 | |||
| 51 | 4152 | char const *raw_name() const noexcept { return pdata_->name(); } | |
| 52 | |||
| 53 | 856 | std::size_t hash_code() const noexcept { | |
| 54 | 856 | return boost::hash_range(raw_name(), raw_name() + get_raw_name_length()); | |
| 55 | } | ||
| 56 | |||
| 57 | 792 | bool operator==(type_index_impl const &rhs) const noexcept { | |
| 58 | 792 | return equal(rhs); | |
| 59 | } | ||
| 60 | |||
| 61 | bool operator!=(type_index_impl const &rhs) const noexcept { | ||
| 62 | return !equal(rhs); | ||
| 63 | } | ||
| 64 | }; | ||
| 65 | |||
| 66 | // like std::type_index, | ||
| 67 | // but without requiring RTTI | ||
| 68 | using type_index = type_index_impl; | ||
| 69 | |||
| 70 | 1646 | template <class T> type_index get_type_index() noexcept { | |
| 71 | 1646 | return type_index_impl::type_id<T>(); | |
| 72 | } | ||
| 73 | |||
| 74 | struct type_index_hasher { | ||
| 75 | 856 | std::size_t operator()(type_index const &tid) const noexcept { | |
| 76 | 856 | return tid.hash_code(); | |
| 77 | } | ||
| 78 | }; | ||
| 79 | |||
| 80 | 1583 | template <class U, class T> U downcast(T *p) { | |
| 81 | #ifdef BOOST_NO_RTTI | ||
| 82 | return static_cast<U>(p); | ||
| 83 | #else | ||
| 84 |
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1583 | return dynamic_cast<U>(p); |
| 85 | #endif | ||
| 86 | } | ||
| 87 | |||
| 88 | 32 | template <class U, class T> U downcast(T &p) { | |
| 89 | #ifdef BOOST_NO_RTTI | ||
| 90 | return static_cast<U>(p); | ||
| 91 | #else | ||
| 92 |
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32 | return dynamic_cast<U>(p); |
| 93 | #endif | ||
| 94 | } | ||
| 95 | |||
| 96 | } // namespace detail | ||
| 97 | } // namespace http_proto | ||
| 98 | } // namespace boost | ||
| 99 | |||
| 100 | #endif | ||
| 101 |