Secrets to macros and c string concat at compile time

Joel Grunbaum

2022-01-20 128c6d51ec8c70e230dc86b100cb887ba3f0378d

 json.cpp

@@ -24,6 +24,8 @@
static std::unordered_map<std::string, book::OrderSideEnum> mapOrder;
static std::unordered_map<std::string, TradeTypeEnum> mapTrade;
static std::unordered_map<book::OrderSideEnum, std::string> mapOrderSide;
static std::unordered_map<MessageTypes, std::string> mapAStr;
static std::unordered_map<TradeTypeEnum, std::string> mapTTStr;

void initialise()
{
@@ -51,6 +53,15 @@
               {"BROKER_TRADE", BROKER_TRADE}};

   mapOrderSide = {{book::Buy, "BUY"}, {book::Sell, "SELL"}};

   mapAStr = {{FUTURE_TYPE, "FUTURE"},
              {SPREAD_TYPE, "SPREAD"},
              {CALL_TYPE, "CALL"},
              {PUT_TYPE, "PUT"}};

   mapTTStr = {{BUY_AGGRESSOR, "BUY_AGGRESSOR"},
               {SELL_AGGRESSOR, "SELL_AGGRESSOR"},
               {BROKER_TRADE, "BROKER_TRADE"}};
}

Message* parseSingle(rapidjson::Value& d);
@@ -153,8 +164,8 @@
SettleMessage* settle(rapidjson::Value& d)
{
   std::chrono::nanoseconds exp_time(0);
    std::string es = d["expiry"].GetString();
    exp_time = parseTime(es);
   std::string es = d["expiry"].GetString();
   exp_time = parseTime(es);
   return new SettleMessage(
      mapTypes[d["type"].GetString()], d["product"].GetString(),
      d["stationName"].GetString(), exp_time, d["price"].GetDouble(),
@@ -163,11 +174,12 @@

AddedMessage* added(rapidjson::Value& d)
{
   return new AddedMessage(
      mapTypes[d["type"].GetString()], d["product"].GetString(),
      d["id"].GetString(), mapOrder[d["side"].GetString()],
      d["price"].GetDouble(), d["filled"].GetInt(), d["resting"].GetInt(),
      d["sequence"].GetInt(), d["timestamp"].GetDouble());
   return new AddedMessage(mapTypes[d["type"].GetString()],
                           d["product"].GetString(), d["id"].GetString(),
                           mapOrder[d["side"].GetString()],
                           d["price"].GetDouble(), d["filled"].GetInt(),
                           d["resting"].GetInt(), d["owner"].GetString(),
                           d["sequence"].GetInt(), d["timestamp"].GetDouble());
}

DeletedMessage* deleted(rapidjson::Value& d)
@@ -270,6 +282,20 @@
{
}

std::string AnnounceMessage::as_string()
{
   return "{\"type\": \"" + mapAStr[this->type] =
              "\", \"product\": \"" + this->product +
              "\", \"stationId\": " + std::to_string(this->stationId) +
              "\", \"stationName\": \"" + this->stationName +
              "\", \"unit\": \"" + this->unit +
              "\", \"expiry\": " + std::to_string(this->expiry.count()) +
              ", \"aggressiveFee\": " + std::to_string(this->aggFee) +
              ", \"passiveFee\": " + std::to_string(this->pasFee) +
              ", \"sequence\": " + std::to_string(this->sequence) +
              ", \"timestamp\": " + std::to_string(this->timestamp) + "}";
}

SettleMessage::SettleMessage(MessageTypes type, std::string product,
                             std::string stationName,
                             std::chrono::nanoseconds expiry, double price,
@@ -277,6 +303,17 @@
   : FromExchange(type, product, sequence, timestamp),
     stationName(stationName), expiry(expiry), price(price)
{
}

std::string SettleMessage::as_string()
{
   return "{\"type\": \"" + mapAStr[this->type] =
              "\", \"product\": \"" + this->product +
              "\", \"stationName\": \"" + this->stationName +
              "\", \"expiry\": " + std::to_string(this->expiry.count()) +
              ", \"price\": " + std::to_string(this->price) +
              ", \"sequence\": " + std::to_string(this->sequence) +
              ", \"timestamp\": " + std::to_string(this->timestamp) + "}";
}

AddMessage::AddMessage(MessageTypes type, std::string product, double price,
@@ -297,22 +334,24 @@
AddedMessage::AddedMessage(MessageTypes type, std::string product,
                           std::string id, book::OrderSideEnum side,
                           double price, uint64_t filled, uint64_t resting,
                           uint64_t sequence, double timestamp)
                           std::string owner, uint64_t sequence,
                           double timestamp)
   : FromExchange(type, product, sequence, timestamp), id(id), side(side),
     price(price), filled(filled), resting(resting)
     price(price), filled(filled), resting(resting), owner(owner)
{
}

std::string AddedMessage::as_string()
{
   return "{\"type\": \"ADDED\", \"product\": \"" + this->product +
          "\", \"product\": \"" + this->id + "\" \"side\": \"" +
          "\", \"product\": \"" + this->id + "\", \"side\": \"" +
          mapOrderSide[this->side] +
          "\", \"price\": " + std::to_string(this->price) +
          "\"filled\": " + std::to_string(this->filled) +
          ", \"filled\": " + std::to_string(this->filled) +
          ", \"resting\": " + std::to_string(this->resting) +
          ", \"sequence\": " + std::to_string(this->sequence) +
          ", \"timestamp\":" + std::to_string(this->timestamp) + "}";
          ", \"owner\": \"" + this->owner +
          "\", \"sequence\": " + std::to_string(this->sequence) +
          ", \"timestamp\": " + std::to_string(this->timestamp) + "}";
}

DeleteMessage::DeleteMessage(MessageTypes type, std::string product,
@@ -338,10 +377,10 @@
std::string DeletedMessage::as_string()
{
   return "{\"type\": \"DELETED\", \"product\": \"" + this->product +
          "\", \"product\": \"" + this->id + "\" \"side\": \"" +
          "\", \"product\": \"" + this->id + "\", \"side\": \"" +
          mapOrderSide[this->side] +
          ", \"sequence\": " + std::to_string(this->sequence) +
          ", \"timestamp\":" + std::to_string(this->timestamp) + "}";
          ", \"timestamp\": " + std::to_string(this->timestamp) + "}";
}

RejectMessage::RejectMessage(MessageTypes type, std::string product,
@@ -353,10 +392,10 @@

std::string RejectMessage::as_string()
{
   return "{\"type\": \"REJECT\", \"product\": \"" + this->product =
              "\", \"error\": \"" + this->error +
              "\", \"sequence\": " + std::to_string(this->sequence) +
              ", \"timestamp\": " + std::to_string(this->timestamp) + "}";
   return "{\"type\": \"REJECT\", \"product\": \"" + this->product +
          "\", \"error\": \"" + this->error +
          "\", \"sequence\": " + std::to_string(this->sequence) +
          ", \"timestamp\": " + std::to_string(this->timestamp) + "}";
}

TradeMessage::TradeMessage(MessageTypes type, std::string product, double price,
@@ -371,11 +410,35 @@
{
}

std::string TradeMessage::as_string()
{
   return "{\"type\": \"TRADE\", \"product\": \"" + this->product +
          "\", \"price\": " + std::to_string(this->price) +
          ", \"volume\": " + std::to_string(this->volume) + ", \"buyer\": \"" +
          this->buyer + "\", \"seller\": \"" + this->seller +
          "\", \"tradeType\": \"" + mapTTStr[this->tradeType] +
          "\", \"passiveOrder\": \"" + this->passiveOrder +
          "\", \"passoveOrderRemaining\": " +
          std::to_string(this->passiveOrderRemaining) +
          "\", \"sequence\": " + std::to_string(this->sequence) +
          ", \"timestamp\": " + std::to_string(this->timestamp) + "}";
}

BrokerRequest::BrokerRequest(MessageTypes type, std::string product,
                             double price, book::OrderSideEnum side,
                             uint64_t volume, std::string counterparty)
   : Broker(type, product, price, side, volume, counterparty)
{
}

std::string BrokerRequest::as_string()
{
   return "{\"type\": \"" + mapAStr[this->type] =
              "\", \"product\": \"" + this->product +
              "\", \"price\": " + std::to_string(this->price) +
              ", \"side\": " + mapOrderSide[this->side] +
              ", \"volume\": " + std::to_string(this->volume) +
              ", \"counterparty\": \"" + this->counterparty + "\"}";
}

BrokerAck::BrokerAck(MessageTypes type, std::string product, double price,
@@ -387,6 +450,19 @@
{
}

std::string BrokerAck::as_string()
{
   return "{\"type\": \"" + mapAStr[this->type] =
              "\", \"product\": \"" + this->product +
              "\", \"price\": " + std::to_string(this->price) +
              ", \"side\": " + mapOrderSide[this->side] +
              ", \"volume\": " + std::to_string(this->volume) +
              ", \"counterparty\": \"" + this->counterparty + +"\", \"id\"" +
              this->id +
              "\", \"brokerTradeStatus\": " + this->brokerTradeStatus +
              "\", \"owner\": \"" + this->owner + "\"}";
}

BrokerConfirm::BrokerConfirm(MessageTypes type, std::string product,
                             double price, book::OrderSideEnum side,
                             uint64_t volume, std::string counterparty,
@@ -394,4 +470,16 @@
   : Broker(type, product, price, side, volume, counterparty), id(id)
{
}

std::string BrokerConfirm::as_string()
{
   return "{\"type\": \"" + mapAStr[this->type] =
              "\", \"product\": \"" + this->product +
              "\", \"price\": " + std::to_string(this->price) +
              ", \"side\": " + mapOrderSide[this->side] +
              ", \"volume\": " + std::to_string(this->volume) +
              ", \"counterparty\": \"" + this->counterparty +
              "\", \"id\": " + this->id + "\"}";
}

} // namespace json