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Escape range items convertible to std::string_view

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This commit is contained in:
Victor Zverovich 2021-12-27 09:38:06 -08:00
parent 33ee4cc516
commit 796662a612
2 changed files with 21 additions and 1 deletions
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11
include/fmt/ranges.h
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@ -65,7 +65,9 @@ template <typename T> class is_std_string_like {
public: public:
static FMT_CONSTEXPR_DECL const bool value = static FMT_CONSTEXPR_DECL const bool value =
is_string<T>::value || !std::is_void<decltype(check<T>(nullptr))>::value; is_string<T>::value ||
std::is_convertible<T, std_string_view<char>>::value ||
!std::is_void<decltype(check<T>(nullptr))>::value;
}; };
template <typename Char> template <typename Char>
@ -520,6 +522,13 @@ auto write_range_entry(OutputIt out, basic_string_view<Char> str) -> OutputIt {
return out; return out;
} }
template <typename Char, typename OutputIt, typename T,
FMT_ENABLE_IF(std::is_convertible<T, std_string_view<char>>::value)>
inline auto write_range_entry(OutputIt out, const T& str) -> OutputIt {
auto sv = std_string_view<Char>(str);
return write_range_entry<Char>(out, basic_string_view<Char>(sv));
}
template <typename Char, typename OutputIt, typename Arg, template <typename Char, typename OutputIt, typename Arg,
FMT_ENABLE_IF(std::is_same<Arg, Char>::value)> FMT_ENABLE_IF(std::is_same<Arg, Char>::value)>
OutputIt write_range_entry(OutputIt out, const Arg v) { OutputIt write_range_entry(OutputIt out, const Arg v) {

11
test/ranges-test.cc
View File

@ -350,3 +350,14 @@ TEST(ranges_test, escape_string) {
"[\"\\xf4\\x8f\\xbf\\xc0\"]"); "[\"\\xf4\\x8f\\xbf\\xc0\"]");
} }
} }
#ifdef FMT_USE_STRING_VIEW
struct convertible_to_string_view {
operator std::string_view() const { return "foo"; }
};
TEST(ranges_test, escape_convertible_to_string_view) {
EXPECT_EQ(fmt::format("{}", std::vector<convertible_to_string_view>(1)),
"[\"foo\"]");
}
#endif // FMT_USE_STRING_VIEW