SERVER-13874 Make mongo::Milliseconds et al. aliases for equivalent stdx::chrono types.

Also introduces operators for adding stdx::chrono::duration to Date_t,
subtracting two Date_ts to get Milliseconds, and remove the use of
reinterpret_cast from the implementation of BSON Timestamp type.

1 files changed, 7 insertions, 5 deletions

diff --git a/src/mongo/bson/json.cpp b/src/mongo/bson/json.cpp
index 2b13e318e44..3bf5c531cd0 100644
--- a/src/mongo/bson/json.cpp
+++ b/src/mongo/bson/json.cpp
@@ -471,12 +471,12 @@ namespace mongo {
             if (!ret.isOK()) {
                 return ret;
             }
-            date = numberLong;
+            date = Date_t::fromMillisSinceEpoch(numberLong);
         }
         else {
             // SERVER-11920: We should use parseNumberFromString here, but that function requires
             // that we know ahead of time where the number ends, which is not currently the case.
-            date = static_cast<unsigned long long>(strtoll(_input, &endptr, 10));
+            date = Date_t::fromMillisSinceEpoch(strtoll(_input, &endptr, 10));
             if (_input == endptr) {
                 return parseError("Date expecting integer milliseconds");
             }
@@ -487,7 +487,8 @@ namespace mongo {
                 // SERVER-11920: We should use parseNumberFromString here, but that function
                 // requires that we know ahead of time where the number ends, which is not currently
                 // the case.
-                date = strtoull(_input, &endptr, 10);
+                date = Date_t::fromMillisSinceEpoch(
+                        static_cast<long long>(strtoull(_input, &endptr, 10)));
                 if (errno == ERANGE) {
                     return parseError("Date milliseconds overflow");
                 }
@@ -753,7 +754,7 @@ namespace mongo {
         char* endptr;
         // SERVER-11920: We should use parseNumberFromString here, but that function requires that
         // we know ahead of time where the number ends, which is not currently the case.
-        Date_t date = static_cast<unsigned long long>(strtoll(_input, &endptr, 10));
+        Date_t date = Date_t::fromMillisSinceEpoch(strtoll(_input, &endptr, 10));
         if (_input == endptr) {
             return parseError("Date expecting integer milliseconds");
         }
@@ -763,7 +764,8 @@ namespace mongo {
             errno = 0;
             // SERVER-11920: We should use parseNumberFromString here, but that function requires
             // that we know ahead of time where the number ends, which is not currently the case.
-            date = strtoull(_input, &endptr, 10);
+            date = Date_t::fromMillisSinceEpoch(
+                    static_cast<long long>(strtoull(_input, &endptr, 10)));
             if (errno == ERANGE) {
                 return parseError("Date milliseconds overflow");
             }