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src: Add constexpr to StringRef ctors

This commit is contained in:
Tatsuhiro Tsujikawa 2016-02-13 19:15:14 +09:00
parent 72877379ec
commit 63a13ccb18
1 changed files with 3 additions and 3 deletions
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6
src/template.h
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@ -387,19 +387,19 @@ public:
using const_pointer = const value_type *; using const_pointer = const value_type *;
using const_iterator = const_pointer; using const_iterator = const_pointer;
StringRef() : base(""), len(0) {} constexpr StringRef() : base(""), len(0) {}
explicit StringRef(const std::string &s) : base(s.c_str()), len(s.size()) {} explicit StringRef(const std::string &s) : base(s.c_str()), len(s.size()) {}
explicit StringRef(const ImmutableString &s) explicit StringRef(const ImmutableString &s)
: base(s.c_str()), len(s.size()) {} : base(s.c_str()), len(s.size()) {}
StringRef(const char *s) : base(s), len(strlen(s)) {} StringRef(const char *s) : base(s), len(strlen(s)) {}
template <typename CharT> template <typename CharT>
StringRef(const CharT *s, size_t n) constexpr 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)
: base(first), len(std::distance(first, last)) {} : base(first), len(std::distance(first, last)) {}
template <typename CharT, size_t N> template <typename CharT, size_t N>
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) {