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db: add formatter for schema_tables::table_kind

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before this change, we rely on the default-generated fmt::formatter
created from operator<<, but fmt v10 dropped the default-generated
formatter.

in this change, we define formatters for db::schema_tables::table_kind,
and its operator<<() is still used by the homebrew generic formatter
for std::map<>, so it is preserved.

Refs #13245

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>

Closes scylladb/scylladb#16972
This commit is contained in:
Kefu Chai
2024-01-25 10:05:13 +08:00
committed by Pavel Emelyanov
parent ffb5ad494f
commit 0fbfc96619
1 changed files with 22 additions and 5 deletions
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27
db/schema_tables.cc
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@@ -1040,12 +1040,29 @@ using keyspace_name = sstring;
enum class table_kind { table, view };
static std::ostream& operator<<(std::ostream& os, table_kind k) {
switch (k) {
case table_kind::table: return os << "table";
case table_kind::view: return os << "view";
}
}
template <> struct fmt::formatter<db::schema_tables::table_kind> {
constexpr auto parse(format_parse_context& ctx) { return ctx.begin(); }
auto format(db::schema_tables::table_kind k, fmt::format_context& ctx) const {
switch (k) {
using enum db::schema_tables::table_kind;
case table:
return fmt::format_to(ctx.out(), "table");
case view:
return fmt::format_to(ctx.out(), "view");
}
abort();
}
abort();
};
namespace db {
namespace schema_tables {
static std::ostream& operator<<(std::ostream& os, table_kind k) {
fmt::print(os, "{}", k);
return os;
}
static constexpr std::initializer_list<table_kind> all_table_kinds = {