25 struct StringPiece {  struct
28   StringPiece() : str_(NULL), len_(0) {}  in StringPiece()  argument
31   StringPiece(const std::string& str) : str_(str.data()), len_(str.size()) {}  in StringPiece()  argument
32   StringPiece(const char* str) : str_(str), len_(strlen(str)) {}  in StringPiece()  function
34   StringPiece(const char* str, size_t len) : str_(str), len_(len) {}  in StringPiece()  argument
46   std::string AsString() const {  in AsString()
50   const_iterator begin() const {  in begin()
54   const_iterator end() const {  in end()
62   size_t size() const {  in size()
66   const char* str_;
67   size_t len_;