15     pos: usize,  field
21         return Self { data: data, pos: 0 };  in new()
28             pos: 0,  in zerod()
46         if self.pos >= self.data.len() {  in read_u8()
49         self.pos += 1;  in read_u8()
50         return Ok(self.data[self.pos - 1]);  in read_u8()
55         if self.pos + 2 > self.data.len() {  in read_u16()
59         res |= (self.data[self.pos] as u16) & 0xff;  in read_u16()
60         self.pos += 1;  in read_u16()
61         res |= ((self.data[self.pos] as u16) & 0xff) << 8;  in read_u16()
62         self.pos += 1;  in read_u16()
69         if self.pos + 4 > self.data.len() {  in read_u32()
74             res |= ((self.data[self.pos] as u32) & 0xff) << (8 * i);  in read_u32()
75             self.pos += 1;  in read_u32()
83         if self.pos + 8 > self.data.len() {  in read_u64()
88             res |= ((self.data[self.pos] as u64) & 0xff) << (8 * i);  in read_u64()
89             self.pos += 1;  in read_u64()
102         if self.pos + buf.len() > self.data.len() {  in read_exact()
105         buf.copy_from_slice(&self.data[self.pos..self.pos + buf.len()]);  in read_exact()
106         self.pos += buf.len();  in read_exact()
114         if self.pos + buf.len() * size_of::<u16>() > self.data.len() * size_of::<u16>() {  in read_u16_into()
132         let pos: i64;  in seek()  localVariable
135                 pos = offset;  in seek()
138                 pos = self.pos as i64 + offset;  in seek()
142                 pos = self.data.len() as i64 + offset;  in seek()
149         if pos < 0 || pos > self.data.len() as i64 {  in seek()
152         self.pos = pos as usize;  in seek()
153         return Ok(self.pos);  in seek()
158         if self.pos >= self.data.len() {  in write_u8()
162         self.data[self.pos] = value;  in write_u8()
163         self.pos += 1;  in write_u8()
170         if self.pos + 2 > self.data.len() {  in write_u16()
174         self.data[self.pos] = (value & 0xff) as u8;  in write_u16()
175         self.pos += 1;  in write_u16()
176         self.data[self.pos] = ((value >> 8) & 0xff) as u8;  in write_u16()
177         self.pos += 1;  in write_u16()
184         if self.pos + 4 > self.data.len() {  in write_u32()
189             self.data[self.pos] = ((value >> (i * 8)) & 0xff) as u8;  in write_u32()
190             self.pos += 1;  in write_u32()
198         if self.pos + 8 > self.data.len() {  in write_u64()
203             self.data[self.pos] = ((value >> (i * 8)) & 0xff) as u8;  in write_u64()
204             self.pos += 1;  in write_u64()
217         if self.pos + buf.len() > self.data.len() {  in write_exact()
221         self.data[self.pos..self.pos + buf.len()].copy_from_slice(&buf[..]);  in write_exact()
222         self.pos += buf.len();  in write_exact()
239     pub fn pos(&self) -> usize {  in pos()  method
240         return self.pos;  in pos()