SERVER-4536 Support appending an int64_t to a BSONObjBuilder

1 files changed, 15 insertions, 0 deletions

diff --git a/src/mongo/bson/bsonobjbuilder.h b/src/mongo/bson/bsonobjbuilder.h
index 3a3f91a60cf..74593287942 100644
--- a/src/mongo/bson/bsonobjbuilder.h
+++ b/src/mongo/bson/bsonobjbuilder.h
@@ -35,6 +35,7 @@
 #pragma once
 
 #include <cmath>
+#include <cstdint>
 #include <limits>
 #include <map>
 
@@ -45,6 +46,7 @@
 #include "mongo/bson/bsonmisc.h"
 #include "mongo/bson/bsonobj.h"
 #include "mongo/platform/decimal128.h"
+#include "mongo/stdx/type_traits.h"
 #include "mongo/util/itoa.h"
 
 namespace mongo {
@@ -270,6 +272,19 @@ public:
         return *this;
     }
 
+    /**
+     * Append a NumberLong (if int64_t isn't the same as long long)
+     */
+    template <typename Int64_t,
+              typename = stdx::enable_if_t<std::is_same<Int64_t, int64_t>::value &&
+                                           !std::is_same<int64_t, long long>::value>>
+    BSONObjBuilder& append(StringData fieldName, Int64_t n) {
+        _b.appendNum((char)NumberLong);
+        _b.appendStr(fieldName);
+        _b.appendNum(n);
+        return *this;
+    }
+
     /** appends a number.  if n < max(int)/2 then uses int, otherwise long long */
     BSONObjBuilder& appendIntOrLL(StringData fieldName, long long n) {
         // extra () to avoid max macro on windows