classic_stmt_prepare_forwarder.h

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*/
 
#ifndef ROUTING_CLASSIC_STMT_PREPARE_FORWARDER_INCLUDED
#define ROUTING_CLASSIC_STMT_PREPARE_FORWARDER_INCLUDED
 
#include "forwarding_processor.h"
 
#include "classic_prepared_statement.h"
 
class StmtPrepareForwarder : public ForwardingProcessor {
 public:
  using ForwardingProcessor::ForwardingProcessor;
 
  enum class Stage {
    Command,
    Connect,
    Connected,
    Response,
    Column,
    EndOfColumns,
    Param,
    EndOfParams,
    Ok,
    OkDone,
    Error,
    Done,
  };
 
  stdx::expected<Result, std::error_code> process() override;
 
  void stage(Stage stage) { stage_ = stage; }
  Stage stage() const { return stage_; }
 
 private:
  stdx::expected<Result, std::error_code> command();
  stdx::expected<Result, std::error_code> connect();
  stdx::expected<Result, std::error_code> connected();
  stdx::expected<Result, std::error_code> response();
  stdx::expected<Result, std::error_code> ok();
  stdx::expected<Result, std::error_code> column();
  stdx::expected<Result, std::error_code> end_of_columns();
  stdx::expected<Result, std::error_code> param();
  stdx::expected<Result, std::error_code> end_of_params();
  stdx::expected<Result, std::error_code> ok_done();
  stdx::expected<Result, std::error_code> error();
 
  bool has_more_messages() const;
 
  Stage stage_{Stage::Command};
 
  size_t columns_left_{0};
  size_t params_left_{0};
 
  uint16_t stmt_id_{};
  PreparedStatement prep_stmt_{};
};
 
#endif