108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fcoroutines-ts -std=c++14 -fsyntax-only -ast-dump %s | FileCheck %s
|
|
|
|
#include "Inputs/std-coroutine.h"
|
|
|
|
using namespace std::experimental;
|
|
|
|
struct Task {
|
|
struct promise_type {
|
|
Task get_return_object() noexcept {
|
|
return Task{coroutine_handle<promise_type>::from_promise(*this)};
|
|
}
|
|
|
|
void return_void() noexcept {}
|
|
|
|
struct final_awaiter {
|
|
bool await_ready() noexcept { return false; }
|
|
coroutine_handle<> await_suspend(coroutine_handle<promise_type> h) noexcept {
|
|
h.destroy();
|
|
return {};
|
|
}
|
|
void await_resume() noexcept {}
|
|
};
|
|
|
|
void unhandled_exception() noexcept {}
|
|
|
|
final_awaiter final_suspend() noexcept { return {}; }
|
|
|
|
suspend_always initial_suspend() noexcept { return {}; }
|
|
|
|
template <typename Awaitable>
|
|
auto await_transform(Awaitable &&awaitable) {
|
|
return awaitable.co_viaIfAsync();
|
|
}
|
|
};
|
|
|
|
using handle_t = coroutine_handle<promise_type>;
|
|
|
|
class Awaiter {
|
|
public:
|
|
explicit Awaiter(handle_t coro) noexcept;
|
|
Awaiter(Awaiter &&other) noexcept;
|
|
Awaiter(const Awaiter &) = delete;
|
|
~Awaiter();
|
|
|
|
bool await_ready() noexcept { return false; }
|
|
handle_t await_suspend(coroutine_handle<> continuation) noexcept;
|
|
void await_resume();
|
|
|
|
private:
|
|
handle_t coro_;
|
|
};
|
|
|
|
Task(handle_t coro) noexcept : coro_(coro) {}
|
|
|
|
handle_t coro_;
|
|
|
|
Task(const Task &t) = delete;
|
|
Task(Task &&t) noexcept;
|
|
~Task();
|
|
Task &operator=(Task t) noexcept;
|
|
|
|
Awaiter co_viaIfAsync();
|
|
};
|
|
|
|
static Task foo() {
|
|
co_return;
|
|
}
|
|
|
|
Task bar() {
|
|
auto mode = 2;
|
|
switch (mode) {
|
|
case 1:
|
|
co_await foo();
|
|
break;
|
|
case 2:
|
|
co_await foo();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// CHECK-LABEL: FunctionDecl {{.*}} bar 'Task ()'
|
|
// CHECK: SwitchStmt
|
|
// CHECK: CaseStmt
|
|
// CHECK: ExprWithCleanups {{.*}} 'void'
|
|
// CHECK-NEXT: CoawaitExpr
|
|
// CHECK-NEXT: MaterializeTemporaryExpr {{.*}} 'Task::Awaiter':'Task::Awaiter'
|
|
// CHECK: ExprWithCleanups {{.*}} 'bool'
|
|
// CHECK-NEXT: CXXMemberCallExpr {{.*}} 'bool'
|
|
// CHECK-NEXT: MemberExpr {{.*}} .await_ready
|
|
// CHECK: CallExpr {{.*}} 'void'
|
|
// CHECK-NEXT: ImplicitCastExpr {{.*}} 'void (*)(void *)'
|
|
// CHECK-NEXT: DeclRefExpr {{.*}} '__builtin_coro_resume' 'void (void *)'
|
|
// CHECK-NEXT: ExprWithCleanups {{.*}} 'void *'
|
|
|
|
// CHECK: CaseStmt
|
|
// CHECK: ExprWithCleanups {{.*}} 'void'
|
|
// CHECK-NEXT: CoawaitExpr
|
|
// CHECK-NEXT: MaterializeTemporaryExpr {{.*}} 'Task::Awaiter':'Task::Awaiter'
|
|
// CHECK: ExprWithCleanups {{.*}} 'bool'
|
|
// CHECK-NEXT: CXXMemberCallExpr {{.*}} 'bool'
|
|
// CHECK-NEXT: MemberExpr {{.*}} .await_ready
|
|
// CHECK: CallExpr {{.*}} 'void'
|
|
// CHECK-NEXT: ImplicitCastExpr {{.*}} 'void (*)(void *)'
|
|
// CHECK-NEXT: DeclRefExpr {{.*}} '__builtin_coro_resume' 'void (void *)'
|
|
// CHECK-NEXT: ExprWithCleanups {{.*}} 'void *'
|