8d60e10ce4
Coroutine co_yield/co_await/co_return are implemented by a serious of synthesized CXXMemberExpr which have no lexical right-side parenthesis. This fix uses the end loc of inner expr as the hypothetical RParenLoc of CXXMemberExpr. For tools this might be an issue since the RParen token doesn't exist (but has a valid location). For future improvement, we might: 1. mark those inner (generated) exprs as implict (tools have chances to skip these nodes) (by @aaron.ballman) 2. borrow the idea from InitListExpr, there are two forms, one is for semantic, the other one is for syntactic, having these two split can make everything easier (by @hokein) Fixes https://github.com/llvm/llvm-project/issues/64483 Reviewed By: aaron.ballman, hokein Differential Revision: https://reviews.llvm.org/D157296
50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin9 %s -std=c++20 \
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// RUN: -fsyntax-only -ast-dump | FileCheck %s
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#include "Inputs/std-coroutine.h"
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using namespace std;
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struct Chat {
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struct promise_type {
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std::suspend_always initial_suspend() { return {}; }
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Chat get_return_object() {
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return std::coroutine_handle<promise_type>::from_promise(*this);
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}
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std::suspend_always yield_value(int m) { return {}; }
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std::suspend_always final_suspend() noexcept { return {}; }
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std::suspend_always return_value(int) { return {}; }
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void unhandled_exception() {}
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auto await_transform(int s) {
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struct awaiter {
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promise_type *promise;
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bool await_ready() { return true; }
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int await_resume() { return promise->message; }
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void await_suspend(std::coroutine_handle<>) {}
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};
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return awaiter{this};
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}
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int message;
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};
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Chat(std::coroutine_handle<promise_type> promise);
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std::coroutine_handle<promise_type> handle;
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};
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Chat f(int s) {
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// CHECK: CoyieldExpr {{.*}} <col:3, col:12>
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// CHECK-NEXT: CXXMemberCallExpr {{.*}} <col:3, col:12> {{.*}}
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// CHECK-NEXT: MemberExpr {{.*}} <col:3> {{.*}}
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// CHECK-NEXT: DeclRefExpr {{.*}} <col:3> {{.*}}
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// CHECK-NEXT: ImplicitCastExpr {{.*}} <col:12> {{.*}}
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// CHECK-NEXT: DeclRefExpr {{.*}} <col:12> {{.*}}
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co_yield s;
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// CHECK: CoreturnStmt {{.*}} <line:{{.*}}:3, col:13>
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co_return s;
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// CHECK: CoawaitExpr {{.*}} <col:3, col:12> 'int'
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co_await s;
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}
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