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string_view::char_type -> value_type (#1539)

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This commit is contained in:
Victor Zverovich 2020-02-01 08:38:00 -08:00
parent 4098970db2
commit b55ea58705
2 changed files with 8 additions and 3 deletions
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5
include/fmt/core.h
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@ -313,7 +313,8 @@ template <typename Char> class basic_string_view {
size_t size_;
public:
using char_type = Char;
using char_type FMT_DEPRECATED_ALIAS = Char;
using value_type = Char;
using iterator = const Char*;
FMT_CONSTEXPR basic_string_view() FMT_NOEXCEPT : data_(nullptr), size_(0) {}
@ -471,7 +472,7 @@ struct is_string : std::is_class<decltype(to_string_view(std::declval<S>()))> {
template <typename S, typename = void> struct char_t_impl {};
template <typename S> struct char_t_impl<S, enable_if_t<is_string<S>::value>> {
using result = decltype(to_string_view(std::declval<S>()));
using type = typename result::char_type;
using type = typename result::value_type;
};
struct error_handler {

6
test/core-test.cc
View File

@ -402,8 +402,12 @@ TEST(ArgTest, VisitInvalidArg) {
fmt::visit_format_arg(visitor, arg);
}
TEST(StringViewTest, ValueType) {
static_assert(std::is_same<string_view::value_type, char>::value, "");
}
TEST(StringViewTest, Length) {
// Test that StringRef::size() returns string length, not buffer size.
// Test that string_view::size() returns string length, not buffer size.
char str[100] = "some string";
EXPECT_EQ(std::strlen(str), string_view(str).size());
EXPECT_LT(std::strlen(str), sizeof(str));