Instrument.h

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//
// Created by sujal on 29-10-2025.
//
 
#pragma once
#include <array>
#include <cstdint>
#include <stdexcept>
#include <string_view>
 
namespace common {
 
    enum class Instrument : uint8_t {
        EURUSD, 
        USDJPY, 
        GBPUSD, 
        USDCAD, 
        USDINR, 
        EURINR, 
        GBPINR, 
        AUDUSD, 
        USDMXN, 
        COUNT 
    };
 
    constexpr std::array<std::string_view,
                         static_cast<size_t>(Instrument::COUNT)>
            symbol_names = {"EURUSD", "USDJPY", "GBPUSD", "USDCAD", "USDINR",
                            "EURINR", "GBPINR", "AUDUSD", "USDMXN"};
 
    inline std::string to_string(Instrument symbol)
    {
        return std::string(symbol_names[static_cast<size_t>(symbol)]);
    }
 
    inline Instrument from_string(std::string_view name)
    {
        for (size_t i = 0; i < symbol_names.size(); ++i)
            if (symbol_names[i] == name) return static_cast<Instrument>(i);
        throw std::invalid_argument("Unknown symbol name");
    }
 
} // namespace common