9 using std::min_element;
14 using std::chrono::seconds;
15 using std::chrono::milliseconds;
16 using std::chrono::microseconds;
17 using std::chrono::nanoseconds;
18 using std::chrono::steady_clock;
19 using std::chrono::system_clock;
20 using std::chrono::duration_cast;
21 using std::chrono::time_point_cast;
22 using std::chrono::time_point;
31 #ifndef LIBT4_NO_FUNCTIONAL
35 using std::placeholders::_1;
48 using std::setprecision;
54 using std::numeric_limits;
63 using std::enable_shared_from_this;
64 using std::make_shared;
65 using std::shared_ptr;
66 using std::unique_ptr;
70 using lock = std::unique_lock<std::mutex>;
71 using cond = std::condition_variable;
75 using std::ostringstream;
76 using std::istringstream;
87 namespace this_thread {
88 using namespace std::this_thread;
96 #include <type_traits>
99 using std::false_type;
101 using std::is_member_function_pointer;
103 using std::underlying_type;
104 using std::enable_if;
105 using std::remove_reference;
106 using std::add_const;
116 // type traits and manipulators
118 template <class A, typename I=void> struct is_const_iterable : false_type {};
120 template<class A> struct is_const_iterable<A,
121 decltype(declval<A&>().cbegin(), declval<A&>().cend(), void())
124 template <class A, typename I=void> struct supports_emplace_back : false_type {};
126 template<class A> struct supports_emplace_back<A,
127 decltype(declval<A&>().emplace_back(declval<typename A::value_type>()), void())
131 using enum_type_t = typename enable_if<is_enum<E>::value, typename underlying_type<E>::type>::type;
132 template<typename E> constexpr inline enum_type_t<E> from_enum(E e) noexcept { return (enum_type_t<E>)e; }
133 template<typename E> constexpr inline E to_enum(enum_type_t<E> value) noexcept { return (E)value; }
135 // string manipulation
138 inline typename enable_if<is_const_iterable<C>::value, string>::type
139 implode(const C & v, string delim=" ") {
140 auto i=v.cbegin(), end=v.cend();
146 oss << delim << *i++;
150 inline vector<string> explode(const string &s, string delim=" ") {
152 size_t start = 0, end = 0;
153 while ((end = s.find(delim, start)) != string::npos) {
154 out.push_back(s.substr(start, end - start));
155 start = end + delim.size();
157 out.push_back(s.substr(start));
161 #include "lang/verify.h"
162 #include "threaded_log.h"
164 // struct tuple adapter, useful for marshalling
171 #define MEMBERS(...) \
172 inline auto _tuple_() -> decltype(tie(__VA_ARGS__)) { return tie(__VA_ARGS__); } \
173 inline auto _tuple_() const -> decltype(tie(__VA_ARGS__)) { return tie(__VA_ARGS__); }
175 // struct ordering and comparison
181 // LEXICOGRAPHIC_COMPARISON(foo)
183 #define LEXICOGRAPHIC_OPERATOR(_c_, _op_) \
184 inline bool operator _op_(const _c_ &b) const { return _tuple_() _op_ b._tuple_(); }
186 #define LEXICOGRAPHIC_COMPARISON(_c_) \
187 LEXICOGRAPHIC_OPERATOR(_c_, <) LEXICOGRAPHIC_OPERATOR(_c_, <=) \
188 LEXICOGRAPHIC_OPERATOR(_c_, >) LEXICOGRAPHIC_OPERATOR(_c_, >=) \
189 LEXICOGRAPHIC_OPERATOR(_c_, ==) LEXICOGRAPHIC_OPERATOR(_c_, !=)
191 // crucial tool for tuple indexing in variadic templates
193 // This implementation of tuple_indices is redistributed under the MIT
194 // License as an insubstantial portion of the LLVM compiler infrastructure.
196 template <size_t...> struct tuple_indices {};
197 template <size_t S, class IntTuple, size_t E> struct make_indices_imp;
198 template <size_t S, size_t... Indices, size_t E> struct make_indices_imp<S, tuple_indices<Indices...>, E> {
199 typedef typename make_indices_imp<S+1, tuple_indices<Indices..., S>, E>::type type;
201 template <size_t E, size_t... Indices> struct make_indices_imp<E, tuple_indices<Indices...>, E> {
202 typedef tuple_indices<Indices...> type;
204 template <size_t E, size_t S=0> struct make_tuple_indices {
205 typedef typename make_indices_imp<S, tuple_indices<>, E>::type type;
208 // Template parameter pack expansion is not allowed in certain contexts, but
209 // brace initializers (for instance, calls to constructors of empty structs)
211 struct pass { template <typename... Args> inline pass(Args&&...) {} };