coffee/continuable
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This commit is contained in:
Denis Blank 2017-03-18 23:33:14 +01:00
parent f6151262dc
commit c46aa9e7c3
1 changed files with 21 additions and 10 deletions
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31
test/mock/test-mock.cpp
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@ -25,20 +25,22 @@
#include <string>
#include <system_error>
struct continuable_base {
template <typename T> continuable_base& then(T&&) { return *this; }
template <typename... A> struct continuable {
template <typename T = int> continuable(T&& = 0) {}
template <typename T> continuable_base& dropped(T&&) { return *this; }
template <typename T> continuable& then(T&&) { return *this; }
template <typename T> continuable_base& thrown(T&&) { return *this; }
template <typename T> continuable& dropped(T&&) { return *this; }
template <typename T> continuable_base& failed(T&&) { return *this; }
template <typename T> continuable& thrown(T&&) { return *this; }
template <typename T> continuable& failed(T&&) { return *this; }
};
template <typename... T> struct promise {
void set_value(T...) noexcept {}
template <typename... A> struct promise {
void set_value(A...) noexcept {}
void operator()(T...) && noexcept {}
void operator()(A...) && noexcept {}
void set_exception(std::exception_ptr exception) noexcept {
// ...
@ -63,10 +65,19 @@ template <typename... Result> struct accumulator {
template <typename Accumulator, typename... Initial>
auto make_accumulator(Accumulator&& /*ac*/, Initial&&... /*initial*/) {
return std::make_tuple(continuable_base{}, accumulator<int>{});
return std::make_tuple(continuable<>{}, accumulator<int>{});
}
continuable_base http_request(std::string) { return {}; }
continuable<std::string> http_request(std::string url) {
return [url = std::move(url)](promise<std::string> result) mutable {
// ...
result.set_value("<html>...</html>");
// ...
result.set_exception(nullptr);
// ...
result.set_error(std::error_code{});
};
}
int main(int, char**) {
auto accumulator = make_accumulator(std::plus<int>{}, 0);