FixMessageParser.h

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#pragma once
 
#include "common_fix/ExecutionReport.h"
#include "common_fix/MarketDataSnapshotFullRefresh.h"
#include "common_fix/MarketDataIncrementalRefresh.h"
#include <optional>
#include <string>
#include <variant>
 
namespace fix_client {
 
    using ParsedFixMessage = std::variant<
        std::monostate, // Represents a message we don't handle deeply (e.g. Heartbeat, Logon Ack)
        fix::ExecutionReport,
        fix::MarketDataSnapshotFullRefresh,
        fix::MarketDataIncrementalRefresh
    >;
 
    class FixMessageParser {
    public:
        static ParsedFixMessage parse(const std::string& fixMessage);
 
    private:
        static std::optional<fix::ExecutionReport> parseExecutionReport(const std::string& fixMessage);
        static std::optional<fix::MarketDataSnapshotFullRefresh> parseMarketDataSnapshot(const std::string& fixMessage);
        static std::optional<fix::MarketDataIncrementalRefresh> parseMarketDataIncremental(const std::string& fixMessage);
    };
 
} // namespace fix_client