Method CompletionGuard

tools/parser/block_processor.cpp:483–483

struct CompletionGuard {
    explicit CompletionGuard(std::atomic<bool> &isDone_) : isDone(isDone_) {}
    CompletionGuard(const CompletionGuard &) = delete;
    CompletionGuard &operator=(const CompletionGuard &) = delete;
    CompletionGuard(CompletionGuard &&) = delete;