+ /// slice - Return a reference to the substring from [Start, End).
+ ///
+ /// \param Start - The index of the starting character in the substring; if
+ /// the index is npos or greater than the length of the string then the
+ /// empty substring will be returned.
+ ///
+ /// \param End - The index following the last character to include in the
+ /// substring. If this is npos, or less than \arg Start, or exceeds the
+ /// number of characters remaining in the string, the string suffix
+ /// (starting with \arg Start) will be returned.
+ StringRef slice(size_t Start, size_t End) const {
+ Start = std::min(Start, Length);
+ End = std::min(std::max(Start, End), Length);
+ return StringRef(Data + Start, End - Start);
+ }
+
+ /// split - Split into two substrings around the first occurence of a
+ /// separator character.
+ ///
+ /// If \arg Separator is in the string, then the result is a pair (LHS, RHS)
+ /// such that (*this == LHS + Separator + RHS) is true and RHS is
+ /// maximal. If \arg Separator is not in the string, then the result is a
+ /// pair (LHS, RHS) where (*this == LHS) and (RHS == "").
+ ///
+ /// \param Separator - The character to split on.
+ /// \return - The split substrings.
+ std::pair<StringRef, StringRef> split(char Separator) const {
+ iterator it = std::find(begin(), end(), Separator);
+ if (it == end())
+ return std::make_pair(*this, StringRef());
+ return std::make_pair(StringRef(begin(), it - begin()),
+ StringRef(it + 1, end() - (it + 1)));
+ }
+