mutation: range_tombstone: specialize fmt::formatter<range_tombstone>

this is a part of a series to migrating from `operator<<(ostream&, ..)` based formatting to fmtlib based formatting. the goal here is to enable fmtlib to print range_tombstone. Refs scylladb#13245 Signed-off-by: Kefu Chai <[email protected]>
sarvex · Mar 21, 2023 · 4af0a0e · 4af0a0e
1 parent 34d4117
commit 4af0a0e
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/mutation/range_tombstone.hh b/mutation/range_tombstone.hh
@@ -286,3 +286,16 @@ public:
 
     void clear();
 };
+
+template<>
+struct fmt::formatter<range_tombstone> : fmt::formatter<std::string_view> {
+    template <typename FormatContext>
+    auto format(const range_tombstone& rt, FormatContext& ctx) const {
+        if (rt) {
+            return fmt::format_to(ctx.out(), "{{range_tombstone: start={}, end={}, {}}}",
+                                  rt.position(), rt.end_position(), rt.tomb);
+        } else {
+            return fmt::format_to(ctx.out(), "{{range_tombstone: none}}");
+        }
+    }
+};