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src: Add specialization for char to avoid reinterpret_cast in constexpr

This commit is contained in:
Tatsuhiro Tsujikawa 2016-03-12 17:29:07 +09:00
parent 3db9c2c796
commit 863a944179
1 changed files with 3 additions and 2 deletions
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5
src/template.h
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@ -401,8 +401,9 @@ public:
explicit StringRef(const ImmutableString &s) explicit StringRef(const ImmutableString &s)
: base(s.c_str()), len(s.size()) {} : base(s.c_str()), len(s.size()) {}
explicit StringRef(const char *s) : base(s), len(strlen(s)) {} explicit StringRef(const char *s) : base(s), len(strlen(s)) {}
constexpr StringRef(const char *s, size_t n) : base(s), len(n) {}
template <typename CharT> template <typename CharT>
constexpr StringRef(const CharT *s, size_t n) StringRef(const CharT *s, size_t n)
: base(reinterpret_cast<const char *>(s)), len(n) {} : base(reinterpret_cast<const char *>(s)), len(n) {}
template <typename InputIt> template <typename InputIt>
StringRef(InputIt first, InputIt last) StringRef(InputIt first, InputIt last)
@ -413,7 +414,7 @@ public:
len(std::distance(first, last)) {} len(std::distance(first, last)) {}
template <typename CharT, size_t N> template <typename CharT, size_t N>
constexpr static StringRef from_lit(const CharT(&s)[N]) { constexpr static StringRef from_lit(const CharT(&s)[N]) {
return StringRef(s, N - 1); return StringRef{s, N - 1};
} }
static StringRef from_maybe_nullptr(const char *s) { static StringRef from_maybe_nullptr(const char *s) {
if (s == nullptr) { if (s == nullptr) {