+22
-19
lines changedFilter options
+22
-19
lines changed Original file line number Diff line number Diff line change
@@ -78,6 +78,11 @@
78 78
#else
79 79
# define FMT_HAS_INCLUDE(x) 0
80 80
#endif
81 +
#ifdef __has_builtin
82 +
# define FMT_HAS_BUILTIN(x) __has_builtin(x)
83 +
#else
84 +
# define FMT_HAS_BUILTIN(x) 0
85 +
#endif
81 86
#ifdef __has_cpp_attribute
82 87
# define FMT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
83 88
#else
@@ -455,19 +460,16 @@ constexpr auto is_utf8_enabled() -> bool { return "\u00A7"[1] == '\xA7'; }
455 460
// It is a macro for better debug codegen without if constexpr.
456 461
#define FMT_USE_UTF8 (!FMT_MSC_VERSION || fmt::detail::is_utf8_enabled())
457 462 463 +
template <typename T> constexpr const char* narrow(const T*) { return nullptr; }
464 +
constexpr FMT_ALWAYS_INLINE const char* narrow(const char* s) { return s; }
465 + 458 466
#ifndef FMT_UNICODE
459 467
# define FMT_UNICODE 1
460 468
#endif
461 469 462 470
static_assert(!FMT_UNICODE || FMT_USE_UTF8,
463 471
"Unicode support requires compiling with /utf-8");
464 472 465 -
template <typename Char> FMT_CONSTEXPR auto length(const Char* s) -> size_t {
466 -
size_t len = 0;
467 -
while (*s++) ++len;
468 -
return len;
469 -
}
470 - 471 473
template <typename Char>
472 474
FMT_CONSTEXPR auto compare(const Char* s1, const Char* s2, std::size_t n)
473 475
-> int {
@@ -536,13 +538,20 @@ template <typename Char> class basic_string_view {
536 538
constexpr basic_string_view(std::nullptr_t) = delete;
537 539 538 540
/// Constructs a string reference object from a C string.
539 -
FMT_CONSTEXPR20
540 -
basic_string_view(const Char* s)
541 -
: data_(s),
542 -
size_(detail::const_check(std::is_same<Char, char>::value &&
543 -
!detail::is_constant_evaluated(false))
544 -
? strlen(reinterpret_cast<const char*>(s))
545 -
: detail::length(s)) {}
541 +
#if FMT_GCC_VERSION
542 +
FMT_ALWAYS_INLINE
543 +
#endif
544 +
FMT_CONSTEXPR20 basic_string_view(const Char* s) : data_(s) {
545 +
#if FMT_HAS_BUILTIN(__buitin_strlen) || FMT_GCC_VERSION || FMT_CLANG_VERSION
546 +
if (std::is_same<Char, char>::value) {
547 +
size_ = __builtin_strlen(detail::narrow(s));
548 +
return;
549 +
}
550 +
#endif
551 +
size_t len = 0;
552 +
while (*s++) ++len;
553 +
size_ = len;
554 +
}
546 555 547 556
/// Constructs a string reference from a `std::basic_string` or a
548 557
/// `std::basic_string_view` object.
@@ -81,12 +81,6 @@
81 81
# define FMT_SO_VISIBILITY(value)
82 82
#endif
83 83 84 -
#ifdef __has_builtin
85 -
# define FMT_HAS_BUILTIN(x) __has_builtin(x)
86 -
#else
87 -
# define FMT_HAS_BUILTIN(x) 0
88 -
#endif
89 - 90 84
#if FMT_GCC_VERSION || FMT_CLANG_VERSION
91 85
# define FMT_NOINLINE __attribute__((noinline))
92 86
#else
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