1#ifndef ENTT_META_RANGE_HPP
2#define ENTT_META_RANGE_HPP
7#include "../core/fwd.hpp"
8#include "../core/iterator.hpp"
16template<
typename Type,
typename It>
17struct meta_range_iterator final {
18 using difference_type = std::ptrdiff_t;
19 using value_type = std::pair<id_type, Type>;
20 using pointer = input_iterator_pointer<value_type>;
21 using reference = value_type;
22 using iterator_category = std::input_iterator_tag;
23 using iterator_concept = std::random_access_iterator_tag;
25 constexpr meta_range_iterator() noexcept
29 constexpr meta_range_iterator(
const meta_ctx &area,
const It iter) noexcept
33 constexpr meta_range_iterator &operator++() noexcept {
37 constexpr meta_range_iterator operator++(
int)
noexcept {
38 meta_range_iterator orig = *
this;
39 return ++(*this), orig;
42 constexpr meta_range_iterator &operator--() noexcept {
46 constexpr meta_range_iterator operator--(
int)
noexcept {
47 meta_range_iterator orig = *
this;
48 return operator--(), orig;
51 constexpr meta_range_iterator &operator+=(
const difference_type value)
noexcept {
56 constexpr meta_range_iterator
operator+(
const difference_type value)
const noexcept {
57 meta_range_iterator copy = *
this;
58 return (copy += value);
61 constexpr meta_range_iterator &operator-=(
const difference_type value)
noexcept {
62 return (*
this += -value);
65 constexpr meta_range_iterator operator-(
const difference_type value)
const noexcept {
66 return (*
this + -value);
69 [[nodiscard]]
constexpr reference operator[](
const difference_type value)
const noexcept {
70 return {it[value].first, Type{*ctx, it[value].second}};
73 [[nodiscard]]
constexpr pointer operator->() const noexcept {
77 [[nodiscard]]
constexpr reference operator*() const noexcept {
78 return {it->first, Type{*ctx, it->second}};
81 template<
typename... Args>
82 friend constexpr std::ptrdiff_t operator-(
const meta_range_iterator<Args...> &,
const meta_range_iterator<Args...> &)
noexcept;
84 template<
typename... Args>
85 friend constexpr bool operator==(
const meta_range_iterator<Args...> &,
const meta_range_iterator<Args...> &)
noexcept;
87 template<
typename... Args>
88 friend constexpr bool operator<(
const meta_range_iterator<Args...> &,
const meta_range_iterator<Args...> &)
noexcept;
95template<
typename... Args>
96[[nodiscard]]
constexpr std::ptrdiff_t operator-(
const meta_range_iterator<Args...> &lhs,
const meta_range_iterator<Args...> &rhs)
noexcept {
97 return lhs.it - rhs.it;
100template<
typename... Args>
101[[nodiscard]]
constexpr bool operator==(
const meta_range_iterator<Args...> &lhs,
const meta_range_iterator<Args...> &rhs)
noexcept {
102 return lhs.it == rhs.it;
105template<
typename... Args>
106[[nodiscard]]
constexpr bool operator!=(
const meta_range_iterator<Args...> &lhs,
const meta_range_iterator<Args...> &rhs)
noexcept {
107 return !(lhs == rhs);
110template<
typename... Args>
111[[nodiscard]]
constexpr bool operator<(
const meta_range_iterator<Args...> &lhs,
const meta_range_iterator<Args...> &rhs)
noexcept {
112 return lhs.it < rhs.it;
115template<
typename... Args>
116[[nodiscard]]
constexpr bool operator>(
const meta_range_iterator<Args...> &lhs,
const meta_range_iterator<Args...> &rhs)
noexcept {
120template<
typename... Args>
121[[nodiscard]]
constexpr bool operator<=(
const meta_range_iterator<Args...> &lhs,
const meta_range_iterator<Args...> &rhs)
noexcept {
125template<
typename... Args>
126[[nodiscard]]
constexpr bool operator>=(
const meta_range_iterator<Args...> &lhs,
const meta_range_iterator<Args...> &rhs)
noexcept {
138template<
typename Type,
typename It>
constexpr bool operator<=(const basic_hashed_string< Char > &lhs, const basic_hashed_string< Char > &rhs) noexcept
Compares two hashed strings.
constexpr bool operator<(const basic_hashed_string< Char > &lhs, const basic_hashed_string< Char > &rhs) noexcept
Compares two hashed strings.
constexpr type_list< Type..., Other... > operator+(type_list< Type... >, type_list< Other... >)
Concatenates multiple type lists.
constexpr bool operator!=(const basic_hashed_string< Char > &lhs, const basic_hashed_string< Char > &rhs) noexcept
Compares two hashed strings.
constexpr bool operator>=(const basic_hashed_string< Char > &lhs, const basic_hashed_string< Char > &rhs) noexcept
Compares two hashed strings.
constexpr bool operator>(const basic_hashed_string< Char > &lhs, const basic_hashed_string< Char > &rhs) noexcept
Compares two hashed strings.
constexpr bool operator==(const basic_hashed_string< Char > &lhs, const basic_hashed_string< Char > &rhs) noexcept
Compares two hashed strings.
Utility class to create an iterable object from a pair of iterators.