src/tint/lang/wgsl/ls/server.h

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#ifndef SRC_TINT_LANG_WGSL_LS_SERVER_H_
#define SRC_TINT_LANG_WGSL_LS_SERVER_H_

#include <memory>

#include "langsvr/lsp/lsp.h"
#include "langsvr/session.h"
#include "src/tint/utils/text/string_stream.h"

namespace tint::wgsl::ls {

/// The language server state object.
class Server {
  public:
    /// Constructor
    /// @param session the LSP session.
    explicit Server(langsvr::Session& session);

    /// Destructor
    ~Server();

    /// @returns true if the server has been requested to shut down.
    bool ShuttingDown() const { return shutting_down_; }

  private:
    /// Logger is a string-stream like utility for logging to the client.
    /// Append message content with '<<'. The message is sent when the logger is destructed.
    struct Logger {
        ~Logger();

        /// @brief Appends @p value to the log message
        /// @return this logger
        template <typename T>
        Logger& operator<<(T&& value) {
            msg << value;
            return *this;
        }

        langsvr::Session& session;
        StringStream msg{};
    };

    /// Log constructs a new Logger to send a log message to the client.
    Logger Log() { return Logger{session_}; }

    /// The LSP session.
    langsvr::Session& session_;
    /// True if the server has been asked to shutdown.
    bool shutting_down_ = false;
};

}  // namespace tint::wgsl::ls

#endif  // SRC_TINT_LANG_WGSL_LS_SERVER_H_