26     pos_ = buffer_;  in zone_()
32     *(pos_++) = x;  in write_u8()
37     WriteLittleEndianValue<uint16_t>(pos_, x);  in write_u16()
38     pos_ += 2;  in write_u16()
43     WriteLittleEndianValue<uint32_t>(pos_, x);  in write_u32()
44     pos_ += 4;  in write_u32()
49     LEBHelper::write_u32v(&pos_, val);  in write_u32v()
54     LEBHelper::write_i32v(&pos_, val);  in write_i32v()
60     LEBHelper::write_u32v(&pos_, static_cast<uint32_t>(val));  in write_size()
65     memcpy(pos_, data, size);  in write()
66     pos_ += size;  in write()
72     pos_ += kMaxVarInt32Size;  in reserve_u32v()
91   size_t offset() const { return static_cast<size_t>(pos_ - buffer_); }  in offset()
92   size_t size() const { return static_cast<size_t>(pos_ - buffer_); }  in size()
94   const byte* end() const { return pos_; }  in end()
97     if ((pos_ + size) > end_) {  in EnsureSpace()
100       memcpy(new_buffer, buffer_, (pos_ - buffer_));  in EnsureSpace()
101       pos_ = new_buffer + (pos_ - buffer_);  in EnsureSpace()
105     DCHECK(pos_ + size <= end_);  in EnsureSpace()
108   byte** pos_ptr() { return &pos_; }  in pos_ptr()
113   byte* pos_;  variable