moving using json into alpaca namespace to avoid global conflict

Author: kzhdev

core/include/alpaca/data/auction.hpp

@@ -13,10 +13,10 @@
 #include <alpaca/data/bar.hpp>
 #include <alpaca/utils.hpp>
 
-using json = nlohmann::json;
-
 namespace alpaca {
 
+using json = nlohmann::json;
+
 /// One opening or closing auction print.
 struct auction_entry {
     uint64_t timestamp = 0;     ///< `t` — nanoseconds since the Unix epoch

core/include/alpaca/data/corporate_action.hpp

@@ -14,10 +14,10 @@
 #include <alpaca/common.hpp>
 #include <alpaca/utils.hpp>
 
-using json = nlohmann::json;
-
 namespace alpaca {
 
+using json = nlohmann::json;
+
 #define ALPACA_CORPORATE_ACTION_TYPE(X, N)                      \
     X(N, reverse_split,          "reverse_split")               \
     X(N, forward_split,          "forward_split")               \

core/include/alpaca/data/fixed_income.hpp

@@ -11,10 +11,10 @@
 #include <alpaca/data/bar.hpp>
 #include <alpaca/utils.hpp>
 
-using json = nlohmann::json;
-
 namespace alpaca {
 
+using json = nlohmann::json;
+
 /// A bond price. `GET /v1beta1/fixed_income/latest/prices`.
 struct fixed_income_price {
     uint64_t timestamp = 0;             ///< `t` — nanoseconds since the Unix epoch

core/include/alpaca/data/forex.hpp

@@ -15,10 +15,10 @@
 #include <alpaca/data/bar.hpp>
 #include <alpaca/utils.hpp>
 
-using json = nlohmann::json;
-
 namespace alpaca {
 
+using json = nlohmann::json;
+
 /// A currency-pair rate. `GET /v1beta1/forex/rates` and `/v1beta1/forex/latest/rates`.
 struct forex_rate {
     uint64_t timestamp = 0;     ///< `t` — nanoseconds since the Unix epoch

core/include/alpaca/data/news.hpp

@@ -14,10 +14,10 @@
 #include <alpaca/common.hpp>
 #include <alpaca/utils.hpp>
 
-using json = nlohmann::json;
-
 namespace alpaca {
 
+using json = nlohmann::json;
+
 /// An image attached to a news article, in one of three sizes.
 struct news_image {
     std::string size;   ///< "thumb", "small" or "large"

core/include/alpaca/data/orderbook.hpp

@@ -12,10 +12,10 @@
 #include <alpaca/data/bar.hpp>
 #include <alpaca/utils.hpp>
 
-using json = nlohmann::json;
-
 namespace alpaca {
 
+using json = nlohmann::json;
+    
 /// One price level of a crypto order book.
 struct orderbook_level {
     double price = 0.;      ///< `p`

core/include/alpaca/data/quote.hpp

@@ -13,10 +13,10 @@
 #include <alpaca/data/bar.hpp>
 #include <alpaca/utils.hpp>
 
-using json = nlohmann::json;
-
 namespace alpaca {
 
+using json = nlohmann::json;
+
 /// A top-of-book bid/ask pair. Shared by stocks, crypto and options; options send a single
 /// condition string where stocks send an array, and both are accepted.
 struct quote {

core/include/alpaca/data/screener.hpp

@@ -12,10 +12,10 @@
 
 #include <alpaca/utils.hpp>
 
-using json = nlohmann::json;
-
 namespace alpaca {
 
+using json = nlohmann::json;
+
 /// One entry of `GET /v1beta1/screener/stocks/most-actives`.
 struct most_active {
     std::string symbol;

core/include/alpaca/data/snapshot.hpp

@@ -13,10 +13,10 @@
 #include <alpaca/data/trade.hpp>
 #include <alpaca/utils.hpp>
 
-using json = nlohmann::json;
-
 namespace alpaca {
 
+using json = nlohmann::json;
+
 /// Everything currently known about a symbol in one response.
 /// `GET /v2/stocks/snapshots` and the crypto equivalent.
 struct snapshot {

core/include/alpaca/data/trade.hpp

@@ -13,10 +13,10 @@
 #include <alpaca/data/bar.hpp>
 #include <alpaca/utils.hpp>
 
-using json = nlohmann::json;
-
 namespace alpaca {
 
+using json = nlohmann::json;
+
 /// A single execution.
 ///
 /// One struct covers stocks, crypto and options even though the three differ slightly on