11 using std::min_element;
16 using std::chrono::seconds;
17 using std::chrono::milliseconds;
18 using std::chrono::microseconds;
19 using std::chrono::nanoseconds;
20 using std::chrono::steady_clock;
21 using std::chrono::system_clock;
22 using std::chrono::duration_cast;
23 using std::chrono::time_point_cast;
24 using std::chrono::time_point;
33 #ifndef LIBT4_NO_FUNCTIONAL
37 using std::placeholders::_1;
50 using std::setprecision;
56 using std::numeric_limits;
65 using std::enable_shared_from_this;
66 using std::make_shared;
67 using std::shared_ptr;
68 using std::unique_ptr;
73 using lock = std::unique_lock<std::mutex>;
74 using cond = std::condition_variable;
78 using std::ostringstream;
79 using std::istringstream;
90 namespace this_thread {
91 using namespace std::this_thread;
99 #include <type_traits>
101 using std::true_type;
102 using std::false_type;
104 using std::is_member_function_pointer;
106 using std::underlying_type;
107 using std::enable_if;
108 using std::remove_reference;
109 using std::add_const;
119 // type traits and manipulators
121 template <class A, typename I=void> struct is_const_iterable : false_type {};
123 template<class A> struct is_const_iterable<A,
124 decltype(declval<A&>().cbegin(), declval<A&>().cend(), void())
127 template <class A, typename I=void> struct supports_emplace_back : false_type {};
129 template<class A> struct supports_emplace_back<A,
130 decltype(declval<A&>().emplace_back(declval<typename A::value_type>()), void())
134 using enum_type_t = typename enable_if<is_enum<E>::value, typename underlying_type<E>::type>::type;
135 template<typename E> constexpr inline enum_type_t<E> from_enum(E e) noexcept { return (enum_type_t<E>)e; }
136 template<typename E> constexpr inline E to_enum(enum_type_t<E> value) noexcept { return (E)value; }
138 // string manipulation
141 inline typename enable_if<is_const_iterable<C>::value, string>::type
142 implode(const C & v, string delim=" ") {
143 auto i=v.cbegin(), end=v.cend();
149 oss << delim << *i++;
153 inline vector<string> explode(const string &s, string delim=" ") {
155 size_t start = 0, end = 0;
156 while ((end = s.find(delim, start)) != string::npos) {
157 out.push_back(s.substr(start, end - start));
158 start = end + delim.size();
160 out.push_back(s.substr(start));
164 #include "lang/verify.h"
165 #include "threaded_log.h"
167 // struct tuple adapter, useful for marshalling
174 #define MEMBERS(...) \
175 inline auto _tuple_() -> decltype(tie(__VA_ARGS__)) { return tie(__VA_ARGS__); } \
176 inline auto _tuple_() const -> decltype(tie(__VA_ARGS__)) { return tie(__VA_ARGS__); }
178 // struct ordering and comparison
184 // LEXICOGRAPHIC_COMPARISON(foo)
186 #define LEXICOGRAPHIC_OPERATOR(_c_, _op_) \
187 inline bool operator _op_(const _c_ &b) const { return _tuple_() _op_ b._tuple_(); }
189 #define LEXICOGRAPHIC_COMPARISON(_c_) \
190 LEXICOGRAPHIC_OPERATOR(_c_, <) LEXICOGRAPHIC_OPERATOR(_c_, <=) \
191 LEXICOGRAPHIC_OPERATOR(_c_, >) LEXICOGRAPHIC_OPERATOR(_c_, >=) \
192 LEXICOGRAPHIC_OPERATOR(_c_, ==) LEXICOGRAPHIC_OPERATOR(_c_, !=)
194 // crucial tool for tuple indexing in variadic templates
196 // This implementation of tuple_indices is redistributed under the MIT
197 // License as an insubstantial portion of the LLVM compiler infrastructure.
199 template <size_t...> struct tuple_indices {};
200 template <size_t S, class IntTuple, size_t E> struct make_indices_imp;
201 template <size_t S, size_t... Indices, size_t E> struct make_indices_imp<S, tuple_indices<Indices...>, E> {
202 typedef typename make_indices_imp<S+1, tuple_indices<Indices..., S>, E>::type type;
204 template <size_t E, size_t... Indices> struct make_indices_imp<E, tuple_indices<Indices...>, E> {
205 typedef tuple_indices<Indices...> type;
207 template <size_t E, size_t S=0> struct make_tuple_indices {
208 typedef typename make_indices_imp<S, tuple_indices<>, E>::type type;
211 // Template parameter pack expansion is not allowed in certain contexts, but
212 // brace initializers (for instance, calls to constructors of empty structs)
214 struct pass { template <typename... Args> inline pass(Args&&...) {} };