25   target->assign(ptr_, length_);  in CopyToString()
30   memcpy(buf, ptr_ + pos, ret);  in copy()
38   const char* result = std::search(ptr_ + pos, ptr_ + length_,  in find()
39                                    s.ptr_, s.ptr_ + s.length_);  in find()
40   const size_type xpos = result - ptr_;  in find()
45   int r = memcmp(ptr_, x.ptr_, std::min(length_, x.length_));  in compare()
57   const char* result = std::find(ptr_ + pos, ptr_ + length_, c);  in find()
58   return result != ptr_ + length_ ? result - ptr_ : npos;  in find()
66   const char* last = ptr_ + std::min(ulen - s.length_, pos) + s.length_;  in rfind()
67   const char* result = std::find_end(ptr_, last, s.ptr_, s.ptr_ + s.length_);  in rfind()
68   return result != last ? result - ptr_ : npos;  in rfind()
75     if (ptr_[i] == c) {  in rfind()
85   return StringPiece(ptr_ + pos, n);  in substr()