15 #include <string_view> 16 #include <type_traits> 18 #include "pqxx/types.hxx" 37 class zview :
public std::string_view
40 constexpr
zview() noexcept =
default;
43 constexpr
zview(
char const text[], std::ptrdiff_t len) :
44 std::string_view{
text,
static_cast<std::size_t
>(len)}
49 std::string_view{
text,
static_cast<std::size_t
>(len)}
53 explicit constexpr
zview(std::string_view other) noexcept :
54 std::string_view{other}
60 template<
typename... Args>
61 explicit constexpr
zview(Args &&...args) :
62 std::string_view(
std::forward<Args>(args)...)
67 zview(std::string
const &str) noexcept :
68 std::string_view{str.c_str(), str.size()}
76 constexpr
zview(
char const str[]) :
std::string_view{str} {}
88 constexpr
zview(
char const (&literal)[size]) : zview(literal, size - 1)
92 [[nodiscard]] constexpr
char const *
c_str() const &noexcept
107 constexpr
zview operator"" _zv(
char const str[], std::size_t len) noexcept
109 return zview{str, len};
114 #if defined(PQXX_HAVE_CONCEPTS) 115 template<>
inline constexpr
bool std::ranges::enable_view<pqxx::zview>{
true};
121 inline constexpr
bool std::ranges::enable_borrowed_range<pqxx::zview>{
true};
131 concept ZString = std::is_convertible_v < strip_t<T>,
132 char const * > or std::is_convertible_v<strip_t<T>,
zview> or
133 std::is_convertible_v<T, std::string const &>;
135 #endif // PQXX_HAVE_CONCEPTS 141 inline constexpr
char const *
as_c_string(
char const str[]) noexcept
146 template<std::
size_t N>
The home of all libpqxx classes, functions, templates, etc.
Definition: array.hxx:26
constexpr zview() noexcept=default
constexpr zview(Args &&...args)
Construct from any initialiser you might use for std::string_view.
Definition: zview.hxx:61
constexpr char const * as_c_string(char const str[]) noexcept
Get a raw C string pointer.
Definition: zview.hxx:141
zview(std::string const &str) noexcept
Definition: zview.hxx:67
constexpr zview(char const text[], std::ptrdiff_t len)
Convenience overload: construct using pointer and signed length.
Definition: zview.hxx:43
constexpr zview(std::string_view other) noexcept
Explicitly promote a string_view to a zview.
Definition: zview.hxx:53
Marker-type wrapper: zero-terminated std::string_view.
Definition: zview.hxx:37
Internal items for libpqxx' own use. Do not use these yourself.
Definition: composite.hxx:82
constexpr zview(char text[], std::ptrdiff_t len)
Convenience overload: construct using pointer and signed length.
Definition: zview.hxx:48
constexpr char const * c_str() const &noexcept
Either a null pointer, or a zero-terminated text buffer.
Definition: zview.hxx:92
constexpr zview(char const (&literal)[size])
Construct a zview from a string literal.
Definition: zview.hxx:88
constexpr zview(char const str[])
Construct a zview from a C-style string.
Definition: zview.hxx:76