| #[repr(C)] |
| #[derive(Copy, Clone, Debug, Default, Eq, Hash, Ord, PartialEq, PartialOrd)] |
| pub struct __BindgenBitfieldUnit<Storage> { |
| storage: Storage, |
| } |
| |
| impl<Storage> __BindgenBitfieldUnit<Storage> { |
| #[inline] |
| pub const fn new(storage: Storage) -> Self { |
| Self { storage } |
| } |
| } |
| |
| impl<Storage> __BindgenBitfieldUnit<Storage> |
| where |
| Storage: AsRef<[u8]> + AsMut<[u8]>, |
| { |
| #[inline] |
| pub fn get_bit(&self, index: usize) -> bool { |
| debug_assert!(index / 8 < self.storage.as_ref().len()); |
| |
| let byte_index = index / 8; |
| let byte = self.storage.as_ref()[byte_index]; |
| |
| let bit_index = if cfg!(target_endian = "big") { |
| 7 - (index % 8) |
| } else { |
| index % 8 |
| }; |
| |
| let mask = 1 << bit_index; |
| |
| byte & mask == mask |
| } |
| |
| #[inline] |
| pub fn set_bit(&mut self, index: usize, val: bool) { |
| debug_assert!(index / 8 < self.storage.as_ref().len()); |
| |
| let byte_index = index / 8; |
| let byte = &mut self.storage.as_mut()[byte_index]; |
| |
| let bit_index = if cfg!(target_endian = "big") { |
| 7 - (index % 8) |
| } else { |
| index % 8 |
| }; |
| |
| let mask = 1 << bit_index; |
| if val { |
| *byte |= mask; |
| } else { |
| *byte &= !mask; |
| } |
| } |
| |
| #[inline] |
| pub fn get(&self, bit_offset: usize, bit_width: u8) -> u64 { |
| debug_assert!(bit_width <= 64); |
| debug_assert!(bit_offset / 8 < self.storage.as_ref().len()); |
| debug_assert!( |
| (bit_offset + (bit_width as usize)) / 8 <= |
| self.storage.as_ref().len() |
| ); |
| |
| let mut val = 0; |
| |
| for i in 0..(bit_width as usize) { |
| if self.get_bit(i + bit_offset) { |
| let index = if cfg!(target_endian = "big") { |
| bit_width as usize - 1 - i |
| } else { |
| i |
| }; |
| val |= 1 << index; |
| } |
| } |
| |
| val |
| } |
| |
| #[inline] |
| pub fn set(&mut self, bit_offset: usize, bit_width: u8, val: u64) { |
| debug_assert!(bit_width <= 64); |
| debug_assert!(bit_offset / 8 < self.storage.as_ref().len()); |
| debug_assert!( |
| (bit_offset + (bit_width as usize)) / 8 <= |
| self.storage.as_ref().len() |
| ); |
| |
| for i in 0..(bit_width as usize) { |
| let mask = 1 << i; |
| let val_bit_is_set = val & mask == mask; |
| let index = if cfg!(target_endian = "big") { |
| bit_width as usize - 1 - i |
| } else { |
| i |
| }; |
| self.set_bit(index + bit_offset, val_bit_is_set); |
| } |
| } |
| } |