ADTast-experimentalenumforall-pointer-decayjacob/cs343-translationnew-ast-unique-exprpthread-emulationqualifiedEnum
Last change
on this file since eef2a9b was
571bf75,
checked in by tdelisle <tdelisle@…>, 5 years ago
|
Clean existing coroutines using std::experimental::suspend_never and fixed Format coroutines to use RAII
|
-
Property mode set to
100644
|
File size:
1.8 KB
|
Rev | Line | |
---|
[571bf75] | 1 | #include <iostream> |
---|
| 2 | #include <experimental/coroutine> |
---|
[be3416d] | 3 | |
---|
| 4 | struct fmt_cor { |
---|
| 5 | struct promise_type { |
---|
[8f936bf] | 6 | char _value; |
---|
[be3416d] | 7 | |
---|
| 8 | fmt_cor get_return_object() { |
---|
| 9 | return fmt_cor(std::experimental::coroutine_handle<promise_type>::from_promise(*this)); |
---|
| 10 | } |
---|
| 11 | |
---|
[571bf75] | 12 | auto initial_suspend() { return std::experimental::suspend_never(); } |
---|
| 13 | auto final_suspend() { return std::experimental::suspend_always(); } |
---|
[be3416d] | 14 | |
---|
| 15 | void return_void() {} |
---|
[8f936bf] | 16 | void unhandled_exception() {} |
---|
| 17 | }; |
---|
| 18 | |
---|
| 19 | struct get { |
---|
| 20 | promise_type * _promise = nullptr; |
---|
[be3416d] | 21 | |
---|
[8f936bf] | 22 | bool await_ready() noexcept { |
---|
| 23 | return false; |
---|
[be3416d] | 24 | } |
---|
| 25 | |
---|
[8f936bf] | 26 | void await_suspend(std::experimental::coroutine_handle<promise_type> _coroutine) noexcept { |
---|
| 27 | _promise = &_coroutine.promise(); |
---|
| 28 | } |
---|
| 29 | char await_resume() noexcept { |
---|
| 30 | assert(_promise); |
---|
| 31 | return _promise->_value; |
---|
| 32 | } |
---|
[be3416d] | 33 | }; |
---|
| 34 | |
---|
| 35 | std::experimental::coroutine_handle<promise_type> _coroutine = nullptr; |
---|
| 36 | |
---|
| 37 | explicit fmt_cor(std::experimental::coroutine_handle<promise_type> coroutine) |
---|
| 38 | : _coroutine(coroutine) |
---|
| 39 | {} |
---|
| 40 | |
---|
| 41 | ~fmt_cor() { |
---|
[13b1b1d] | 42 | if(_coroutine) { |
---|
| 43 | _coroutine.destroy(); |
---|
[571bf75] | 44 | |
---|
[13b1b1d] | 45 | } |
---|
[be3416d] | 46 | } |
---|
| 47 | |
---|
| 48 | fmt_cor() = default; |
---|
| 49 | fmt_cor(fmt_cor const &) = delete; |
---|
| 50 | fmt_cor& operator=(fmt_cor const &) = delete; |
---|
| 51 | |
---|
| 52 | fmt_cor(fmt_cor&& other) { |
---|
| 53 | std::swap(_coroutine, other._coroutine); |
---|
| 54 | } |
---|
| 55 | |
---|
| 56 | fmt_cor& operator=(fmt_cor&& other) { |
---|
| 57 | if(&other != this) { |
---|
| 58 | _coroutine = other._coroutine; |
---|
| 59 | other._coroutine = nullptr; |
---|
| 60 | } |
---|
| 61 | return *this; |
---|
| 62 | } |
---|
| 63 | |
---|
| 64 | void send(char a) { |
---|
[8f936bf] | 65 | _coroutine.promise()._value = a; |
---|
[be3416d] | 66 | _coroutine.resume(); |
---|
| 67 | } |
---|
| 68 | }; |
---|
| 69 | |
---|
| 70 | fmt_cor Fmt() { |
---|
[571bf75] | 71 | struct locals { |
---|
| 72 | int g, b; |
---|
| 73 | |
---|
| 74 | ~locals() { |
---|
| 75 | if (g != 0 | b != 0) { |
---|
| 76 | std::cout << "\n"; |
---|
| 77 | } |
---|
| 78 | } |
---|
| 79 | } l; |
---|
[be3416d] | 80 | for(;;) { |
---|
[13b1b1d] | 81 | for(l.g = 0; l.g < 5; l.g++) { |
---|
| 82 | for(l.b = 0; l.b < 4; l.b++) { |
---|
[8f936bf] | 83 | std::cout << co_await fmt_cor::get(); |
---|
[be3416d] | 84 | } |
---|
| 85 | std::cout << " "; |
---|
| 86 | } |
---|
| 87 | std::cout << std::endl; |
---|
| 88 | } |
---|
| 89 | } |
---|
| 90 | |
---|
| 91 | int main() { |
---|
| 92 | auto fmt = Fmt(); |
---|
| 93 | for(int i = 0; i < 41; i++) { |
---|
| 94 | fmt.send('a'); |
---|
| 95 | } |
---|
| 96 | } |
---|
Note: See
TracBrowser
for help on using the repository browser.