#![deny(missing_docs)]
-#![cfg_attr(not(feature = "std"), no_std)]
-
-use core::{
- convert::TryInto, fmt::Debug, hash::Hash, ptr::copy_nonoverlapping, slice,
-};
-
-#[cfg(feature = "std")]
-pub use crate::io::{ReadBytesExt, WriteBytesExt};
-
-#[cfg(feature = "std")]
-mod io;
-
-#[inline]
-fn extend_sign(val: u64, nbytes: usize) -> i64 {
- let shift = (8 - nbytes) * 8;
- (val << shift) as i64 >> shift
-}
-
-#[inline]
-fn extend_sign128(val: u128, nbytes: usize) -> i128 {
- let shift = (16 - nbytes) * 8;
- (val << shift) as i128 >> shift
-}
-
-#[inline]
-fn unextend_sign(val: i64, nbytes: usize) -> u64 {
- let shift = (8 - nbytes) * 8;
- (val << shift) as u64 >> shift
-}
-
-#[inline]
-fn unextend_sign128(val: i128, nbytes: usize) -> u128 {
- let shift = (16 - nbytes) * 8;
- (val << shift) as u128 >> shift
-}
-
-#[inline]
-fn pack_size(n: u64) -> usize {
- if n < 1 << 8 {
- 1
- } else if n < 1 << 16 {
- 2
- } else if n < 1 << 24 {
- 3
- } else if n < 1 << 32 {
- 4
- } else if n < 1 << 40 {
- 5
- } else if n < 1 << 48 {
- 6
- } else if n < 1 << 56 {
- 7
- } else {
- 8
- }
-}
-
-#[inline]
-fn pack_size128(n: u128) -> usize {
- if n < 1 << 8 {
- 1
- } else if n < 1 << 16 {
- 2
- } else if n < 1 << 24 {
- 3
- } else if n < 1 << 32 {
- 4
- } else if n < 1 << 40 {
- 5
- } else if n < 1 << 48 {
- 6
- } else if n < 1 << 56 {
- 7
- } else if n < 1 << 64 {
- 8
- } else if n < 1 << 72 {
- 9
- } else if n < 1 << 80 {
- 10
- } else if n < 1 << 88 {
- 11
- } else if n < 1 << 96 {
- 12
- } else if n < 1 << 104 {
- 13
- } else if n < 1 << 112 {
- 14
- } else if n < 1 << 120 {
- 15
- } else {
- 16
- }
-}
-
-mod private {
- pub trait Sealed {}
- impl Sealed for super::LittleEndian {}
- impl Sealed for super::BigEndian {}
-}
-
-pub trait ByteOrder:
- Clone
- + Copy
- + Debug
- + Default
- + Eq
- + Hash
- + Ord
- + PartialEq
- + PartialOrd
- + private::Sealed
-{
- fn read_u16(buf: &[u8]) -> u16;
-
- fn read_u24(buf: &[u8]) -> u32 {
- Self::read_uint(buf, 3) as u32
- }
-
- fn read_u32(buf: &[u8]) -> u32;
-
- fn read_u48(buf: &[u8]) -> u64 {
- Self::read_uint(buf, 6) as u64
- }
-
- fn read_u64(buf: &[u8]) -> u64;
-
- fn read_u128(buf: &[u8]) -> u128;
-
- fn read_uint(buf: &[u8], nbytes: usize) -> u64;
-
- fn read_uint128(buf: &[u8], nbytes: usize) -> u128;
-
- fn write_u16(buf: &mut [u8], n: u16);
-
- fn write_u24(buf: &mut [u8], n: u32) {
- Self::write_uint(buf, n as u64, 3)
- }
-
- fn write_u32(buf: &mut [u8], n: u32);
-
- fn write_u48(buf: &mut [u8], n: u64) {
- Self::write_uint(buf, n as u64, 6)
- }
-
- fn write_u64(buf: &mut [u8], n: u64);
-
- fn write_u128(buf: &mut [u8], n: u128);
-
- fn write_uint(buf: &mut [u8], n: u64, nbytes: usize);
-
- fn write_uint128(buf: &mut [u8], n: u128, nbytes: usize);
-
- #[inline]
- fn read_i16(buf: &[u8]) -> i16 {
- Self::read_u16(buf) as i16
- }
-
- #[inline]
- fn read_i24(buf: &[u8]) -> i32 {
- Self::read_int(buf, 3) as i32
- }
-
- #[inline]
- fn read_i32(buf: &[u8]) -> i32 {
- Self::read_u32(buf) as i32
- }
-
- #[inline]
- fn read_i48(buf: &[u8]) -> i64 {
- Self::read_int(buf, 6) as i64
- }
-
- #[inline]
- fn read_i64(buf: &[u8]) -> i64 {
- Self::read_u64(buf) as i64
- }
-
- #[inline]
- fn read_i128(buf: &[u8]) -> i128 {
- Self::read_u128(buf) as i128
- }
-
- #[inline]
- fn read_int(buf: &[u8], nbytes: usize) -> i64 {
- extend_sign(Self::read_uint(buf, nbytes), nbytes)
- }
-
- #[inline]
- fn read_int128(buf: &[u8], nbytes: usize) -> i128 {
- extend_sign128(Self::read_uint128(buf, nbytes), nbytes)
- }
-
- #[inline]
- fn read_f32(buf: &[u8]) -> f32 {
- f32::from_bits(Self::read_u32(buf))
- }
-
- #[inline]
- fn read_f64(buf: &[u8]) -> f64 {
- f64::from_bits(Self::read_u64(buf))
- }
-
- #[inline]
- fn write_i16(buf: &mut [u8], n: i16) {
- Self::write_u16(buf, n as u16)
- }
-
- #[inline]
- fn write_i24(buf: &mut [u8], n: i32) {
- Self::write_int(buf, n as i64, 3)
- }
-
- #[inline]
- fn write_i32(buf: &mut [u8], n: i32) {
- Self::write_u32(buf, n as u32)
- }
-
- #[inline]
- fn write_i48(buf: &mut [u8], n: i64) {
- Self::write_int(buf, n as i64, 6)
- }
-
- #[inline]
- fn write_i64(buf: &mut [u8], n: i64) {
- Self::write_u64(buf, n as u64)
- }
-
- #[inline]
- fn write_i128(buf: &mut [u8], n: i128) {
- Self::write_u128(buf, n as u128)
- }
-
- #[inline]
- fn write_int(buf: &mut [u8], n: i64, nbytes: usize) {
- Self::write_uint(buf, unextend_sign(n, nbytes), nbytes)
- }
-
- #[inline]
- fn write_int128(buf: &mut [u8], n: i128, nbytes: usize) {
- Self::write_uint128(buf, unextend_sign128(n, nbytes), nbytes)
- }
-
- #[inline]
- fn write_f32(buf: &mut [u8], n: f32) {
- Self::write_u32(buf, n.to_bits())
- }
-
- #[inline]
- fn write_f64(buf: &mut [u8], n: f64) {
- Self::write_u64(buf, n.to_bits())
- }
-
- fn read_u16_into(src: &[u8], dst: &mut [u16]);
-
- fn read_u32_into(src: &[u8], dst: &mut [u32]);
-
- fn read_u64_into(src: &[u8], dst: &mut [u64]);
-
- fn read_u128_into(src: &[u8], dst: &mut [u128]);
-
- #[inline]
- fn read_i16_into(src: &[u8], dst: &mut [i16]) {
- let dst = unsafe {
- slice::from_raw_parts_mut(dst.as_mut_ptr() as *mut u16, dst.len())
- };
- Self::read_u16_into(src, dst)
- }
-
- #[inline]
- fn read_i32_into(src: &[u8], dst: &mut [i32]) {
- let dst = unsafe {
- slice::from_raw_parts_mut(dst.as_mut_ptr() as *mut u32, dst.len())
- };
- Self::read_u32_into(src, dst);
- }
-
- #[inline]
- fn read_i64_into(src: &[u8], dst: &mut [i64]) {
- let dst = unsafe {
- slice::from_raw_parts_mut(dst.as_mut_ptr() as *mut u64, dst.len())
- };
- Self::read_u64_into(src, dst);
- }
-
- #[inline]
- fn read_i128_into(src: &[u8], dst: &mut [i128]) {
- let dst = unsafe {
- slice::from_raw_parts_mut(dst.as_mut_ptr() as *mut u128, dst.len())
- };
- Self::read_u128_into(src, dst);
- }
-
- #[inline]
- fn read_f32_into(src: &[u8], dst: &mut [f32]) {
- let dst = unsafe {
- slice::from_raw_parts_mut(dst.as_mut_ptr() as *mut u32, dst.len())
- };
- Self::read_u32_into(src, dst);
- }
-
- #[inline]
- #[deprecated(since = "1.3.0", note = "please use `read_f32_into` instead")]
- fn read_f32_into_unchecked(src: &[u8], dst: &mut [f32]) {
- Self::read_f32_into(src, dst);
- }
-
- #[inline]
- fn read_f64_into(src: &[u8], dst: &mut [f64]) {
- let dst = unsafe {
- slice::from_raw_parts_mut(dst.as_mut_ptr() as *mut u64, dst.len())
- };
- Self::read_u64_into(src, dst);
- }
-
- #[inline]
- #[deprecated(since = "1.3.0", note = "please use `read_f64_into` instead")]
- fn read_f64_into_unchecked(src: &[u8], dst: &mut [f64]) {
- Self::read_f64_into(src, dst);
- }
-
- fn write_u16_into(src: &[u16], dst: &mut [u8]);
-
- fn write_u32_into(src: &[u32], dst: &mut [u8]);
-
- fn write_u64_into(src: &[u64], dst: &mut [u8]);
-
- fn write_u128_into(src: &[u128], dst: &mut [u8]);
-
- fn write_i8_into(src: &[i8], dst: &mut [u8]) {
- let src = unsafe {
- slice::from_raw_parts(src.as_ptr() as *const u8, src.len())
- };
- dst.copy_from_slice(src);
- }
-
- fn write_i16_into(src: &[i16], dst: &mut [u8]) {
- let src = unsafe {
- slice::from_raw_parts(src.as_ptr() as *const u16, src.len())
- };
- Self::write_u16_into(src, dst);
- }
-
- fn write_i32_into(src: &[i32], dst: &mut [u8]) {
- let src = unsafe {
- slice::from_raw_parts(src.as_ptr() as *const u32, src.len())
- };
- Self::write_u32_into(src, dst);
- }
-
- fn write_i64_into(src: &[i64], dst: &mut [u8]) {
- let src = unsafe {
- slice::from_raw_parts(src.as_ptr() as *const u64, src.len())
- };
- Self::write_u64_into(src, dst);
- }
-
- fn write_i128_into(src: &[i128], dst: &mut [u8]) {
- let src = unsafe {
- slice::from_raw_parts(src.as_ptr() as *const u128, src.len())
- };
- Self::write_u128_into(src, dst);
- }
-
- fn write_f32_into(src: &[f32], dst: &mut [u8]) {
- let src = unsafe {
- slice::from_raw_parts(src.as_ptr() as *const u32, src.len())
- };
- Self::write_u32_into(src, dst);
- }
-
- fn write_f64_into(src: &[f64], dst: &mut [u8]) {
- let src = unsafe {
- slice::from_raw_parts(src.as_ptr() as *const u64, src.len())
- };
- Self::write_u64_into(src, dst);
- }
-
- fn from_slice_u16(numbers: &mut [u16]);
-
- fn from_slice_u32(numbers: &mut [u32]);
-
- fn from_slice_u64(numbers: &mut [u64]);
-
- fn from_slice_u128(numbers: &mut [u128]);
-
- #[inline]
- fn from_slice_i16(src: &mut [i16]) {
- let src = unsafe {
- slice::from_raw_parts_mut(src.as_mut_ptr() as *mut u16, src.len())
- };
- Self::from_slice_u16(src);
- }
-
- #[inline]
- fn from_slice_i32(src: &mut [i32]) {
- let src = unsafe {
- slice::from_raw_parts_mut(src.as_mut_ptr() as *mut u32, src.len())
- };
- Self::from_slice_u32(src);
- }
-
- #[inline]
- fn from_slice_i64(src: &mut [i64]) {
- let src = unsafe {
- slice::from_raw_parts_mut(src.as_mut_ptr() as *mut u64, src.len())
- };
- Self::from_slice_u64(src);
- }
-
- #[inline]
- fn from_slice_i128(src: &mut [i128]) {
- let src = unsafe {
- slice::from_raw_parts_mut(src.as_mut_ptr() as *mut u128, src.len())
- };
- Self::from_slice_u128(src);
- }
-
- fn from_slice_f32(numbers: &mut [f32]);
-
- fn from_slice_f64(numbers: &mut [f64]);
-}
-
-#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
-pub enum BigEndian {}
-
-impl Default for BigEndian {
- fn default() -> BigEndian {
- panic!("BigEndian default")
- }
-}
-
-pub type BE = BigEndian;
-
-#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
-pub enum LittleEndian {}
-
-impl Default for LittleEndian {
- fn default() -> LittleEndian {
- panic!("LittleEndian default")
- }
-}
-
-pub type LE = LittleEndian;
-
-pub type NetworkEndian = BigEndian;
-
-#[cfg(target_endian = "little")]
-pub type NativeEndian = LittleEndian;
-
-#[cfg(target_endian = "big")]
-pub type NativeEndian = BigEndian;
-
-macro_rules! unsafe_write_num_bytes {
- ($ty:ty, $size:expr, $n:expr, $dst:expr, $which:ident) => {{
- assert!($size <= $dst.len());
- unsafe {
- let bytes = *(&$n.$which() as *const _ as *const [u8; $size]);
- copy_nonoverlapping((&bytes).as_ptr(), $dst.as_mut_ptr(), $size);
- }
- }};
-}
-
-macro_rules! unsafe_read_slice {
- ($src:expr, $dst:expr, $size:expr, $which:ident) => {{
- assert_eq!($src.len(), $size * $dst.len());
-
- unsafe {
- copy_nonoverlapping(
- $src.as_ptr(),
- $dst.as_mut_ptr() as *mut u8,
- $src.len(),
- );
- }
- for v in $dst.iter_mut() {
- *v = v.$which();
- }
- }};
-}
-
-macro_rules! unsafe_write_slice_native {
- ($src:expr, $dst:expr, $ty:ty) => {{
- let size = core::mem::size_of::<$ty>();
- assert_eq!(size * $src.len(), $dst.len());
-
- unsafe {
- copy_nonoverlapping(
- $src.as_ptr() as *const u8,
- $dst.as_mut_ptr(),
- $dst.len(),
- );
- }
- }};
-}
-
-macro_rules! write_slice {
- ($src:expr, $dst:expr, $ty:ty, $size:expr, $write:expr) => {{
- assert!($size == ::core::mem::size_of::<$ty>());
- assert_eq!($size * $src.len(), $dst.len());
-
- for (&n, chunk) in $src.iter().zip($dst.chunks_mut($size)) {
- $write(chunk, n);
- }
- }};
-}
-
-impl ByteOrder for BigEndian {
- #[inline]
- fn read_u16(buf: &[u8]) -> u16 {
- u16::from_be_bytes(buf[..2].try_into().unwrap())
- }
-
- #[inline]
- fn read_u32(buf: &[u8]) -> u32 {
- u32::from_be_bytes(buf[..4].try_into().unwrap())
- }
-
- #[inline]
- fn read_u64(buf: &[u8]) -> u64 {
- u64::from_be_bytes(buf[..8].try_into().unwrap())
- }
-
- #[inline]
- fn read_u128(buf: &[u8]) -> u128 {
- u128::from_be_bytes(buf[..16].try_into().unwrap())
- }
-
- #[inline]
- fn read_uint(buf: &[u8], nbytes: usize) -> u64 {
- assert!(1 <= nbytes && nbytes <= 8 && nbytes <= buf.len());
- let mut out = 0u64;
- let ptr_out = &mut out as *mut u64 as *mut u8;
- unsafe {
- copy_nonoverlapping(
- buf.as_ptr(),
- ptr_out.offset((8 - nbytes) as isize),
- nbytes,
- );
- }
- out.to_be()
- }
-
- #[inline]
- fn read_uint128(buf: &[u8], nbytes: usize) -> u128 {
- assert!(1 <= nbytes && nbytes <= 16 && nbytes <= buf.len());
- let mut out: u128 = 0;
- let ptr_out = &mut out as *mut u128 as *mut u8;
- unsafe {
- copy_nonoverlapping(
- buf.as_ptr(),
- ptr_out.offset((16 - nbytes) as isize),
- nbytes,
- );
- }
- out.to_be()
- }
-
- #[inline]
- fn write_u16(buf: &mut [u8], n: u16) {
- unsafe_write_num_bytes!(u16, 2, n, buf, to_be);
- }
-
- #[inline]
- fn write_u32(buf: &mut [u8], n: u32) {
- unsafe_write_num_bytes!(u32, 4, n, buf, to_be);
- }
-
- #[inline]
- fn write_u64(buf: &mut [u8], n: u64) {
- unsafe_write_num_bytes!(u64, 8, n, buf, to_be);
- }
-
- #[inline]
- fn write_u128(buf: &mut [u8], n: u128) {
- unsafe_write_num_bytes!(u128, 16, n, buf, to_be);
- }
-
- #[inline]
- fn write_uint(buf: &mut [u8], n: u64, nbytes: usize) {
- assert!(pack_size(n) <= nbytes && nbytes <= 8);
- assert!(nbytes <= buf.len());
- unsafe {
- let bytes = *(&n.to_be() as *const u64 as *const [u8; 8]);
- copy_nonoverlapping(
- bytes.as_ptr().offset((8 - nbytes) as isize),
- buf.as_mut_ptr(),
- nbytes,
- );
- }
- }
-
- #[inline]
- fn write_uint128(buf: &mut [u8], n: u128, nbytes: usize) {
- assert!(pack_size128(n) <= nbytes && nbytes <= 16);
- assert!(nbytes <= buf.len());
- unsafe {
- let bytes = *(&n.to_be() as *const u128 as *const [u8; 16]);
- copy_nonoverlapping(
- bytes.as_ptr().offset((16 - nbytes) as isize),
- buf.as_mut_ptr(),
- nbytes,
- );
- }
- }
-
- #[inline]
- fn read_u16_into(src: &[u8], dst: &mut [u16]) {
- unsafe_read_slice!(src, dst, 2, to_be);
- }
-
- #[inline]
- fn read_u32_into(src: &[u8], dst: &mut [u32]) {
- unsafe_read_slice!(src, dst, 4, to_be);
- }
-
- #[inline]
- fn read_u64_into(src: &[u8], dst: &mut [u64]) {
- unsafe_read_slice!(src, dst, 8, to_be);
- }
-
- #[inline]
- fn read_u128_into(src: &[u8], dst: &mut [u128]) {
- unsafe_read_slice!(src, dst, 16, to_be);
- }
-
- #[inline]
- fn write_u16_into(src: &[u16], dst: &mut [u8]) {
- if cfg!(target_endian = "big") {
- unsafe_write_slice_native!(src, dst, u16);
- } else {
- write_slice!(src, dst, u16, 2, Self::write_u16);
- }
- }
-
- #[inline]
- fn write_u32_into(src: &[u32], dst: &mut [u8]) {
- if cfg!(target_endian = "big") {
- unsafe_write_slice_native!(src, dst, u32);
- } else {
- write_slice!(src, dst, u32, 4, Self::write_u32);
- }
- }
-
- #[inline]
- fn write_u64_into(src: &[u64], dst: &mut [u8]) {
- if cfg!(target_endian = "big") {
- unsafe_write_slice_native!(src, dst, u64);
- } else {
- write_slice!(src, dst, u64, 8, Self::write_u64);
- }
- }
-
- #[inline]
- fn write_u128_into(src: &[u128], dst: &mut [u8]) {
- if cfg!(target_endian = "big") {
- unsafe_write_slice_native!(src, dst, u128);
- } else {
- write_slice!(src, dst, u128, 16, Self::write_u128);
- }
- }
-
- #[inline]
- fn from_slice_u16(numbers: &mut [u16]) {
- if cfg!(target_endian = "little") {
- for n in numbers {
- *n = n.to_be();
- }
- }
- }
-
- #[inline]
- fn from_slice_u32(numbers: &mut [u32]) {
- if cfg!(target_endian = "little") {
- for n in numbers {
- *n = n.to_be();
- }
- }
- }
-
- #[inline]
- fn from_slice_u64(numbers: &mut [u64]) {
- if cfg!(target_endian = "little") {
- for n in numbers {
- *n = n.to_be();
- }
- }
- }
-
- #[inline]
- fn from_slice_u128(numbers: &mut [u128]) {
- if cfg!(target_endian = "little") {
- for n in numbers {
- *n = n.to_be();
- }
- }
- }
-
- #[inline]
- fn from_slice_f32(numbers: &mut [f32]) {
- if cfg!(target_endian = "little") {
- for n in numbers {
- unsafe {
- let int = *(n as *const f32 as *const u32);
- *n = *(&int.to_be() as *const u32 as *const f32);
- }
- }
- }
- }
-
- #[inline]
- fn from_slice_f64(numbers: &mut [f64]) {
- if cfg!(target_endian = "little") {
- for n in numbers {
- unsafe {
- let int = *(n as *const f64 as *const u64);
- *n = *(&int.to_be() as *const u64 as *const f64);
- }
- }
- }
- }
-}
-
-impl ByteOrder for LittleEndian {
- #[inline]
- fn read_u16(buf: &[u8]) -> u16 {
- u16::from_le_bytes(buf[..2].try_into().unwrap())
- }
-
- #[inline]
- fn read_u32(buf: &[u8]) -> u32 {
- u32::from_le_bytes(buf[..4].try_into().unwrap())
- }
-
- #[inline]
- fn read_u64(buf: &[u8]) -> u64 {
- u64::from_le_bytes(buf[..8].try_into().unwrap())
- }
-
- #[inline]
- fn read_u128(buf: &[u8]) -> u128 {
- u128::from_le_bytes(buf[..16].try_into().unwrap())
- }
-
- #[inline]
- fn read_uint(buf: &[u8], nbytes: usize) -> u64 {
- assert!(1 <= nbytes && nbytes <= 8 && nbytes <= buf.len());
- let mut out = 0u64;
- let ptr_out = &mut out as *mut u64 as *mut u8;
- unsafe {
- copy_nonoverlapping(buf.as_ptr(), ptr_out, nbytes);
- }
- out.to_le()
- }
-
- #[inline]
- fn read_uint128(buf: &[u8], nbytes: usize) -> u128 {
- assert!(1 <= nbytes && nbytes <= 16 && nbytes <= buf.len());
- let mut out: u128 = 0;
- let ptr_out = &mut out as *mut u128 as *mut u8;
- unsafe {
- copy_nonoverlapping(buf.as_ptr(), ptr_out, nbytes);
- }
- out.to_le()
- }
-
- #[inline]
- fn write_u16(buf: &mut [u8], n: u16) {
- unsafe_write_num_bytes!(u16, 2, n, buf, to_le);
- }
-
- #[inline]
- fn write_u32(buf: &mut [u8], n: u32) {
- unsafe_write_num_bytes!(u32, 4, n, buf, to_le);
- }
-
- #[inline]
- fn write_u64(buf: &mut [u8], n: u64) {
- unsafe_write_num_bytes!(u64, 8, n, buf, to_le);
- }
-
- #[inline]
- fn write_u128(buf: &mut [u8], n: u128) {
- unsafe_write_num_bytes!(u128, 16, n, buf, to_le);
- }
-
- #[inline]
- fn write_uint(buf: &mut [u8], n: u64, nbytes: usize) {
- assert!(pack_size(n as u64) <= nbytes && nbytes <= 8);
- assert!(nbytes <= buf.len());
- unsafe {
- let bytes = *(&n.to_le() as *const u64 as *const [u8; 8]);
- copy_nonoverlapping(bytes.as_ptr(), buf.as_mut_ptr(), nbytes);
- }
- }
-
- #[inline]
- fn write_uint128(buf: &mut [u8], n: u128, nbytes: usize) {
- assert!(pack_size128(n as u128) <= nbytes && nbytes <= 16);
- assert!(nbytes <= buf.len());
- unsafe {
- let bytes = *(&n.to_le() as *const u128 as *const [u8; 16]);
- copy_nonoverlapping(bytes.as_ptr(), buf.as_mut_ptr(), nbytes);
- }
- }
-
- #[inline]
- fn read_u16_into(src: &[u8], dst: &mut [u16]) {
- unsafe_read_slice!(src, dst, 2, to_le);
- }
-
- #[inline]
- fn read_u32_into(src: &[u8], dst: &mut [u32]) {
- unsafe_read_slice!(src, dst, 4, to_le);
- }
-
- #[inline]
- fn read_u64_into(src: &[u8], dst: &mut [u64]) {
- unsafe_read_slice!(src, dst, 8, to_le);
- }
-
- #[inline]
- fn read_u128_into(src: &[u8], dst: &mut [u128]) {
- unsafe_read_slice!(src, dst, 16, to_le);
- }
-
- #[inline]
- fn write_u16_into(src: &[u16], dst: &mut [u8]) {
- if cfg!(target_endian = "little") {
- unsafe_write_slice_native!(src, dst, u16);
- } else {
- write_slice!(src, dst, u16, 2, Self::write_u16);
- }
- }
-
- #[inline]
- fn write_u32_into(src: &[u32], dst: &mut [u8]) {
- if cfg!(target_endian = "little") {
- unsafe_write_slice_native!(src, dst, u32);
- } else {
- write_slice!(src, dst, u32, 4, Self::write_u32);
- }
- }
-
- #[inline]
- fn write_u64_into(src: &[u64], dst: &mut [u8]) {
- if cfg!(target_endian = "little") {
- unsafe_write_slice_native!(src, dst, u64);
- } else {
- write_slice!(src, dst, u64, 8, Self::write_u64);
- }
- }
-
- #[inline]
- fn write_u128_into(src: &[u128], dst: &mut [u8]) {
- if cfg!(target_endian = "little") {
- unsafe_write_slice_native!(src, dst, u128);
- } else {
- write_slice!(src, dst, u128, 16, Self::write_u128);
- }
- }
-
- #[inline]
- fn from_slice_u16(numbers: &mut [u16]) {
- if cfg!(target_endian = "big") {
- for n in numbers {
- *n = n.to_le();
- }
- }
- }
-
- #[inline]
- fn from_slice_u32(numbers: &mut [u32]) {
- if cfg!(target_endian = "big") {
- for n in numbers {
- *n = n.to_le();
- }
- }
- }
-
- #[inline]
- fn from_slice_u64(numbers: &mut [u64]) {
- if cfg!(target_endian = "big") {
- for n in numbers {
- *n = n.to_le();
- }
- }
- }
-
- #[inline]
- fn from_slice_u128(numbers: &mut [u128]) {
- if cfg!(target_endian = "big") {
- for n in numbers {
- *n = n.to_le();
- }
- }
- }
-
- #[inline]
- fn from_slice_f32(numbers: &mut [f32]) {
- if cfg!(target_endian = "big") {
- for n in numbers {
- unsafe {
- let int = *(n as *const f32 as *const u32);
- *n = *(&int.to_le() as *const u32 as *const f32);
- }
- }
- }
- }
-
- #[inline]
- fn from_slice_f64(numbers: &mut [f64]) {
- if cfg!(target_endian = "big") {
- for n in numbers {
- unsafe {
- let int = *(n as *const f64 as *const u64);
- *n = *(&int.to_le() as *const u64 as *const f64);
- }
- }
- }
- }
-}
-
-#[cfg(test)]
-mod test {
- use quickcheck::{Arbitrary, Gen, QuickCheck, StdGen, Testable};
- use rand::{thread_rng, Rng};
-
- pub const U24_MAX: u32 = 16_777_215;
- pub const I24_MAX: i32 = 8_388_607;
- pub const U48_MAX: u64 = 281_474_976_710_655;
- pub const I48_MAX: i64 = 140_737_488_355_327;
-
- pub const U64_MAX: u64 = ::core::u64::MAX;
- pub const I64_MAX: u64 = ::core::i64::MAX as u64;
-
- macro_rules! calc_max {
- ($max:expr, $bytes:expr) => {
- calc_max!($max, $bytes, 8)
- };
- ($max:expr, $bytes:expr, $maxbytes:expr) => {
- ($max - 1) >> (8 * ($maxbytes - $bytes))
- };
- }
-
- #[derive(Clone, Debug)]
- pub struct Wi128<T>(pub T);
-
- impl<T: Clone> Wi128<T> {
- pub fn clone(&self) -> T {
- self.0.clone()
- }
- }
-
- impl<T: PartialEq> PartialEq<T> for Wi128<T> {
- fn eq(&self, other: &T) -> bool {
- self.0.eq(other)
- }
- }
-
- impl Arbitrary for Wi128<u128> {
- fn arbitrary<G: Gen>(gen: &mut G) -> Wi128<u128> {
- let max = calc_max!(::core::u128::MAX, gen.size(), 16);
- let output = (gen.gen::<u64>() as u128)
- | ((gen.gen::<u64>() as u128) << 64);
- Wi128(output & (max - 1))
- }
- }
-
- impl Arbitrary for Wi128<i128> {
- fn arbitrary<G: Gen>(gen: &mut G) -> Wi128<i128> {
- let max = calc_max!(::core::i128::MAX, gen.size(), 16);
- let output = (gen.gen::<i64>() as i128)
- | ((gen.gen::<i64>() as i128) << 64);
- Wi128(output & (max - 1))
- }
- }
-
- pub fn qc_sized<A: Testable>(f: A, size: u64) {
- QuickCheck::new()
- .gen(StdGen::new(thread_rng(), size as usize))
- .tests(1_00)
- .max_tests(10_000)
- .quickcheck(f);
- }
-
- macro_rules! qc_byte_order {
- ($name:ident, $ty_int:ty, $max:expr,
- $bytes:expr, $read:ident, $write:ident) => {
- mod $name {
- #[allow(unused_imports)]
- use super::{qc_sized, Wi128};
- use crate::{
- BigEndian, ByteOrder, LittleEndian, NativeEndian,
- };
-
- #[test]
- fn big_endian() {
- fn prop(n: $ty_int) -> bool {
- let mut buf = [0; 16];
- BigEndian::$write(&mut buf, n.clone(), $bytes);
- n == BigEndian::$read(&buf[..$bytes], $bytes)
- }
- qc_sized(prop as fn($ty_int) -> bool, $max);
- }
-
- #[test]
- fn little_endian() {
- fn prop(n: $ty_int) -> bool {
- let mut buf = [0; 16];
- LittleEndian::$write(&mut buf, n.clone(), $bytes);
- n == LittleEndian::$read(&buf[..$bytes], $bytes)
- }
- qc_sized(prop as fn($ty_int) -> bool, $max);
- }
-
- #[test]
- fn native_endian() {
- fn prop(n: $ty_int) -> bool {
- let mut buf = [0; 16];
- NativeEndian::$write(&mut buf, n.clone(), $bytes);
- n == NativeEndian::$read(&buf[..$bytes], $bytes)
- }
- qc_sized(prop as fn($ty_int) -> bool, $max);
- }
- }
- };
- ($name:ident, $ty_int:ty, $max:expr,
- $read:ident, $write:ident) => {
- mod $name {
- #[allow(unused_imports)]
- use super::{qc_sized, Wi128};
- use crate::{
- BigEndian, ByteOrder, LittleEndian, NativeEndian,
- };
- use core::mem::size_of;
-
- #[test]
- fn big_endian() {
- fn prop(n: $ty_int) -> bool {
- let bytes = size_of::<$ty_int>();
- let mut buf = [0; 16];
- BigEndian::$write(&mut buf[16 - bytes..], n.clone());
- n == BigEndian::$read(&buf[16 - bytes..])
- }
- qc_sized(prop as fn($ty_int) -> bool, $max - 1);
- }
-
- #[test]
- fn little_endian() {
- fn prop(n: $ty_int) -> bool {
- let bytes = size_of::<$ty_int>();
- let mut buf = [0; 16];
- LittleEndian::$write(&mut buf[..bytes], n.clone());
- n == LittleEndian::$read(&buf[..bytes])
- }
- qc_sized(prop as fn($ty_int) -> bool, $max - 1);
- }
-
- #[test]
- fn native_endian() {
- fn prop(n: $ty_int) -> bool {
- let bytes = size_of::<$ty_int>();
- let mut buf = [0; 16];
- NativeEndian::$write(&mut buf[..bytes], n.clone());
- n == NativeEndian::$read(&buf[..bytes])
- }
- qc_sized(prop as fn($ty_int) -> bool, $max - 1);
- }
- }
- };
- }
-
- qc_byte_order!(
- prop_u16,
- u16,
- ::core::u16::MAX as u64,
- read_u16,
- write_u16
- );
- qc_byte_order!(
- prop_i16,
- i16,
- ::core::i16::MAX as u64,
- read_i16,
- write_i16
- );
- qc_byte_order!(
- prop_u24,
- u32,
- crate::test::U24_MAX as u64,
- read_u24,
- write_u24
- );
- qc_byte_order!(
- prop_i24,
- i32,
- crate::test::I24_MAX as u64,
- read_i24,
- write_i24
- );
- qc_byte_order!(
- prop_u32,
- u32,
- ::core::u32::MAX as u64,
- read_u32,
- write_u32
- );
- qc_byte_order!(
- prop_i32,
- i32,
- ::core::i32::MAX as u64,
- read_i32,
- write_i32
- );
- qc_byte_order!(
- prop_u48,
- u64,
- crate::test::U48_MAX as u64,
- read_u48,
- write_u48
- );
- qc_byte_order!(
- prop_i48,
- i64,
- crate::test::I48_MAX as u64,
- read_i48,
- write_i48
- );
- qc_byte_order!(
- prop_u64,
- u64,
- ::core::u64::MAX as u64,
- read_u64,
- write_u64
- );
- qc_byte_order!(
- prop_i64,
- i64,
- ::core::i64::MAX as u64,
- read_i64,
- write_i64
- );
- qc_byte_order!(
- prop_f32,
- f32,
- ::core::u64::MAX as u64,
- read_f32,
- write_f32
- );
- qc_byte_order!(
- prop_f64,
- f64,
- ::core::i64::MAX as u64,
- read_f64,
- write_f64
- );
-
- qc_byte_order!(prop_u128, Wi128<u128>, 16 + 1, read_u128, write_u128);
- qc_byte_order!(prop_i128, Wi128<i128>, 16 + 1, read_i128, write_i128);
-
- qc_byte_order!(
- prop_uint_1,
- u64,
- calc_max!(super::U64_MAX, 1),
- 1,
- read_uint,
- write_uint
- );
- qc_byte_order!(
- prop_uint_2,
- u64,
- calc_max!(super::U64_MAX, 2),
- 2,
- read_uint,
- write_uint
- );
- qc_byte_order!(
- prop_uint_3,
- u64,
- calc_max!(super::U64_MAX, 3),
- 3,
- read_uint,
- write_uint
- );
- qc_byte_order!(
- prop_uint_4,
- u64,
- calc_max!(super::U64_MAX, 4),
- 4,
- read_uint,
- write_uint
- );
- qc_byte_order!(
- prop_uint_5,
- u64,
- calc_max!(super::U64_MAX, 5),
- 5,
- read_uint,
- write_uint
- );
- qc_byte_order!(
- prop_uint_6,
- u64,
- calc_max!(super::U64_MAX, 6),
- 6,
- read_uint,
- write_uint
- );
- qc_byte_order!(
- prop_uint_7,
- u64,
- calc_max!(super::U64_MAX, 7),
- 7,
- read_uint,
- write_uint
- );
- qc_byte_order!(
- prop_uint_8,
- u64,
- calc_max!(super::U64_MAX, 8),
- 8,
- read_uint,
- write_uint
- );
-
- qc_byte_order!(
- prop_uint128_1,
- Wi128<u128>,
- 1,
- 1,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_2,
- Wi128<u128>,
- 2,
- 2,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_3,
- Wi128<u128>,
- 3,
- 3,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_4,
- Wi128<u128>,
- 4,
- 4,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_5,
- Wi128<u128>,
- 5,
- 5,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_6,
- Wi128<u128>,
- 6,
- 6,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_7,
- Wi128<u128>,
- 7,
- 7,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_8,
- Wi128<u128>,
- 8,
- 8,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_9,
- Wi128<u128>,
- 9,
- 9,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_10,
- Wi128<u128>,
- 10,
- 10,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_11,
- Wi128<u128>,
- 11,
- 11,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_12,
- Wi128<u128>,
- 12,
- 12,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_13,
- Wi128<u128>,
- 13,
- 13,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_14,
- Wi128<u128>,
- 14,
- 14,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_15,
- Wi128<u128>,
- 15,
- 15,
- read_uint128,
- write_uint128
- );
- qc_byte_order!(
- prop_uint128_16,
- Wi128<u128>,
- 16,
- 16,
- read_uint128,
- write_uint128
- );
-
- qc_byte_order!(
- prop_int_1,
- i64,
- calc_max!(super::I64_MAX, 1),
- 1,
- read_int,
- write_int
- );
- qc_byte_order!(
- prop_int_2,
- i64,
- calc_max!(super::I64_MAX, 2),
- 2,
- read_int,
- write_int
- );
- qc_byte_order!(
- prop_int_3,
- i64,
- calc_max!(super::I64_MAX, 3),
- 3,
- read_int,
- write_int
- );
- qc_byte_order!(
- prop_int_4,
- i64,
- calc_max!(super::I64_MAX, 4),
- 4,
- read_int,
- write_int
- );
- qc_byte_order!(
- prop_int_5,
- i64,
- calc_max!(super::I64_MAX, 5),
- 5,
- read_int,
- write_int
- );
- qc_byte_order!(
- prop_int_6,
- i64,
- calc_max!(super::I64_MAX, 6),
- 6,
- read_int,
- write_int
- );
- qc_byte_order!(
- prop_int_7,
- i64,
- calc_max!(super::I64_MAX, 7),
- 7,
- read_int,
- write_int
- );
- qc_byte_order!(
- prop_int_8,
- i64,
- calc_max!(super::I64_MAX, 8),
- 8,
- read_int,
- write_int
- );
-
- qc_byte_order!(
- prop_int128_1,
- Wi128<i128>,
- 1,
- 1,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_2,
- Wi128<i128>,
- 2,
- 2,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_3,
- Wi128<i128>,
- 3,
- 3,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_4,
- Wi128<i128>,
- 4,
- 4,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_5,
- Wi128<i128>,
- 5,
- 5,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_6,
- Wi128<i128>,
- 6,
- 6,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_7,
- Wi128<i128>,
- 7,
- 7,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_8,
- Wi128<i128>,
- 8,
- 8,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_9,
- Wi128<i128>,
- 9,
- 9,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_10,
- Wi128<i128>,
- 10,
- 10,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_11,
- Wi128<i128>,
- 11,
- 11,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_12,
- Wi128<i128>,
- 12,
- 12,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_13,
- Wi128<i128>,
- 13,
- 13,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_14,
- Wi128<i128>,
- 14,
- 14,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_15,
- Wi128<i128>,
- 15,
- 15,
- read_int128,
- write_int128
- );
- qc_byte_order!(
- prop_int128_16,
- Wi128<i128>,
- 16,
- 16,
- read_int128,
- write_int128
- );
-
- macro_rules! too_small {
- ($name:ident, $maximally_small:expr, $zero:expr,
- $read:ident, $write:ident) => {
- mod $name {
- use crate::{
- BigEndian, ByteOrder, LittleEndian, NativeEndian,
- };
-
- #[test]
- #[should_panic]
- fn read_big_endian() {
- let buf = [0; $maximally_small];
- BigEndian::$read(&buf);
- }
-
- #[test]
- #[should_panic]
- fn read_little_endian() {
- let buf = [0; $maximally_small];
- LittleEndian::$read(&buf);
- }
-
- #[test]
- #[should_panic]
- fn read_native_endian() {
- let buf = [0; $maximally_small];
- NativeEndian::$read(&buf);
- }
-
- #[test]
- #[should_panic]
- fn write_big_endian() {
- let mut buf = [0; $maximally_small];
- BigEndian::$write(&mut buf, $zero);
- }
-
- #[test]
- #[should_panic]
- fn write_little_endian() {
- let mut buf = [0; $maximally_small];
- LittleEndian::$write(&mut buf, $zero);
- }
-
- #[test]
- #[should_panic]
- fn write_native_endian() {
- let mut buf = [0; $maximally_small];
- NativeEndian::$write(&mut buf, $zero);
- }
- }
- };
- ($name:ident, $maximally_small:expr, $read:ident) => {
- mod $name {
- use crate::{
- BigEndian, ByteOrder, LittleEndian, NativeEndian,
- };
-
- #[test]
- #[should_panic]
- fn read_big_endian() {
- let buf = [0; $maximally_small];
- BigEndian::$read(&buf, $maximally_small + 1);
- }
-
- #[test]
- #[should_panic]
- fn read_little_endian() {
- let buf = [0; $maximally_small];
- LittleEndian::$read(&buf, $maximally_small + 1);
- }
-
- #[test]
- #[should_panic]
- fn read_native_endian() {
- let buf = [0; $maximally_small];
- NativeEndian::$read(&buf, $maximally_small + 1);
- }
- }
- };
- }
-
- too_small!(small_u16, 1, 0, read_u16, write_u16);
- too_small!(small_i16, 1, 0, read_i16, write_i16);
- too_small!(small_u32, 3, 0, read_u32, write_u32);
- too_small!(small_i32, 3, 0, read_i32, write_i32);
- too_small!(small_u64, 7, 0, read_u64, write_u64);
- too_small!(small_i64, 7, 0, read_i64, write_i64);
- too_small!(small_f32, 3, 0.0, read_f32, write_f32);
- too_small!(small_f64, 7, 0.0, read_f64, write_f64);
- too_small!(small_u128, 15, 0, read_u128, write_u128);
- too_small!(small_i128, 15, 0, read_i128, write_i128);
-
- too_small!(small_uint_1, 1, read_uint);
- too_small!(small_uint_2, 2, read_uint);
- too_small!(small_uint_3, 3, read_uint);
- too_small!(small_uint_4, 4, read_uint);
- too_small!(small_uint_5, 5, read_uint);
- too_small!(small_uint_6, 6, read_uint);
- too_small!(small_uint_7, 7, read_uint);
-
- too_small!(small_uint128_1, 1, read_uint128);
- too_small!(small_uint128_2, 2, read_uint128);
- too_small!(small_uint128_3, 3, read_uint128);
- too_small!(small_uint128_4, 4, read_uint128);
- too_small!(small_uint128_5, 5, read_uint128);
- too_small!(small_uint128_6, 6, read_uint128);
- too_small!(small_uint128_7, 7, read_uint128);
- too_small!(small_uint128_8, 8, read_uint128);
- too_small!(small_uint128_9, 9, read_uint128);
- too_small!(small_uint128_10, 10, read_uint128);
- too_small!(small_uint128_11, 11, read_uint128);
- too_small!(small_uint128_12, 12, read_uint128);
- too_small!(small_uint128_13, 13, read_uint128);
- too_small!(small_uint128_14, 14, read_uint128);
- too_small!(small_uint128_15, 15, read_uint128);
-
- too_small!(small_int_1, 1, read_int);
- too_small!(small_int_2, 2, read_int);
- too_small!(small_int_3, 3, read_int);
- too_small!(small_int_4, 4, read_int);
- too_small!(small_int_5, 5, read_int);
- too_small!(small_int_6, 6, read_int);
- too_small!(small_int_7, 7, read_int);
-
- too_small!(small_int128_1, 1, read_int128);
- too_small!(small_int128_2, 2, read_int128);
- too_small!(small_int128_3, 3, read_int128);
- too_small!(small_int128_4, 4, read_int128);
- too_small!(small_int128_5, 5, read_int128);
- too_small!(small_int128_6, 6, read_int128);
- too_small!(small_int128_7, 7, read_int128);
- too_small!(small_int128_8, 8, read_int128);
- too_small!(small_int128_9, 9, read_int128);
- too_small!(small_int128_10, 10, read_int128);
- too_small!(small_int128_11, 11, read_int128);
- too_small!(small_int128_12, 12, read_int128);
- too_small!(small_int128_13, 13, read_int128);
- too_small!(small_int128_14, 14, read_int128);
- too_small!(small_int128_15, 15, read_int128);
-
- macro_rules! slice_lengths {
- ($name:ident, $read:ident, $write:ident,
- $num_bytes:expr, $numbers:expr) => {
- mod $name {
- use crate::{
- BigEndian, ByteOrder, LittleEndian, NativeEndian,
- };
-
- #[test]
- #[should_panic]
- fn read_big_endian() {
- let bytes = [0; $num_bytes];
- let mut numbers = $numbers;
- BigEndian::$read(&bytes, &mut numbers);
- }
-
- #[test]
- #[should_panic]
- fn read_little_endian() {
- let bytes = [0; $num_bytes];
- let mut numbers = $numbers;
- LittleEndian::$read(&bytes, &mut numbers);
- }
-
- #[test]
- #[should_panic]
- fn read_native_endian() {
- let bytes = [0; $num_bytes];
- let mut numbers = $numbers;
- NativeEndian::$read(&bytes, &mut numbers);
- }
-
- #[test]
- #[should_panic]
- fn write_big_endian() {
- let mut bytes = [0; $num_bytes];
- let numbers = $numbers;
- BigEndian::$write(&numbers, &mut bytes);
- }
-
- #[test]
- #[should_panic]
- fn write_little_endian() {
- let mut bytes = [0; $num_bytes];
- let numbers = $numbers;
- LittleEndian::$write(&numbers, &mut bytes);
- }
-
- #[test]
- #[should_panic]
- fn write_native_endian() {
- let mut bytes = [0; $num_bytes];
- let numbers = $numbers;
- NativeEndian::$write(&numbers, &mut bytes);
- }
- }
- };
- }
-
- slice_lengths!(
- slice_len_too_small_u16,
- read_u16_into,
- write_u16_into,
- 3,
- [0, 0]
- );
- slice_lengths!(
- slice_len_too_big_u16,
- read_u16_into,
- write_u16_into,
- 5,
- [0, 0]
- );
- slice_lengths!(
- slice_len_too_small_i16,
- read_i16_into,
- write_i16_into,
- 3,
- [0, 0]
- );
- slice_lengths!(
- slice_len_too_big_i16,
- read_i16_into,
- write_i16_into,
- 5,
- [0, 0]
- );
-
- slice_lengths!(
- slice_len_too_small_u32,
- read_u32_into,
- write_u32_into,
- 7,
- [0, 0]
- );
- slice_lengths!(
- slice_len_too_big_u32,
- read_u32_into,
- write_u32_into,
- 9,
- [0, 0]
- );
- slice_lengths!(
- slice_len_too_small_i32,
- read_i32_into,
- write_i32_into,
- 7,
- [0, 0]
- );
- slice_lengths!(
- slice_len_too_big_i32,
- read_i32_into,
- write_i32_into,
- 9,
- [0, 0]
- );
-
- slice_lengths!(
- slice_len_too_small_u64,
- read_u64_into,
- write_u64_into,
- 15,
- [0, 0]
- );
- slice_lengths!(
- slice_len_too_big_u64,
- read_u64_into,
- write_u64_into,
- 17,
- [0, 0]
- );
- slice_lengths!(
- slice_len_too_small_i64,
- read_i64_into,
- write_i64_into,
- 15,
- [0, 0]
- );
- slice_lengths!(
- slice_len_too_big_i64,
- read_i64_into,
- write_i64_into,
- 17,
- [0, 0]
- );
-
- slice_lengths!(
- slice_len_too_small_u128,
- read_u128_into,
- write_u128_into,
- 31,
- [0, 0]
- );
- slice_lengths!(
- slice_len_too_big_u128,
- read_u128_into,
- write_u128_into,
- 33,
- [0, 0]
- );
- slice_lengths!(
- slice_len_too_small_i128,
- read_i128_into,
- write_i128_into,
- 31,
- [0, 0]
- );
- slice_lengths!(
- slice_len_too_big_i128,
- read_i128_into,
- write_i128_into,
- 33,
- [0, 0]
- );
-
- #[test]
- fn uint_bigger_buffer() {
- use crate::{ByteOrder, LittleEndian};
- let n = LittleEndian::read_uint(&[1, 2, 3, 4, 5, 6, 7, 8], 5);
- assert_eq!(n, 0x05_0403_0201);
- }
-
- #[test]
- fn regression173_array_impl() {
- use crate::{BigEndian, ByteOrder, LittleEndian};
-
- let xs = [0; 100];
-
- let x = BigEndian::read_u16(&xs);
- assert_eq!(x, 0);
- let x = BigEndian::read_u32(&xs);
- assert_eq!(x, 0);
- let x = BigEndian::read_u64(&xs);
- assert_eq!(x, 0);
- let x = BigEndian::read_u128(&xs);
- assert_eq!(x, 0);
- let x = BigEndian::read_i16(&xs);
- assert_eq!(x, 0);
- let x = BigEndian::read_i32(&xs);
- assert_eq!(x, 0);
- let x = BigEndian::read_i64(&xs);
- assert_eq!(x, 0);
- let x = BigEndian::read_i128(&xs);
- assert_eq!(x, 0);
-
- let x = LittleEndian::read_u16(&xs);
- assert_eq!(x, 0);
- let x = LittleEndian::read_u32(&xs);
- assert_eq!(x, 0);
- let x = LittleEndian::read_u64(&xs);
- assert_eq!(x, 0);
- let x = LittleEndian::read_u128(&xs);
- assert_eq!(x, 0);
- let x = LittleEndian::read_i16(&xs);
- assert_eq!(x, 0);
- let x = LittleEndian::read_i32(&xs);
- assert_eq!(x, 0);
- let x = LittleEndian::read_i64(&xs);
- assert_eq!(x, 0);
- let x = LittleEndian::read_i128(&xs);
- assert_eq!(x, 0);
- }
-}
-
-#[cfg(test)]
-#[cfg(feature = "std")]
-mod stdtests {
- extern crate quickcheck;
- extern crate rand;
-
- use self::quickcheck::{QuickCheck, StdGen, Testable};
- use self::rand::thread_rng;
-
- fn qc_unsized<A: Testable>(f: A) {
- QuickCheck::new()
- .gen(StdGen::new(thread_rng(), 16))
- .tests(1_00)
- .max_tests(10_000)
- .quickcheck(f);
- }
-
- macro_rules! calc_max {
- ($max:expr, $bytes:expr) => {
- ($max - 1) >> (8 * (8 - $bytes))
- };
- }
-
- macro_rules! qc_bytes_ext {
- ($name:ident, $ty_int:ty, $max:expr,
- $bytes:expr, $read:ident, $write:ident) => {
- mod $name {
- #[allow(unused_imports)]
- use crate::test::{qc_sized, Wi128};
- use crate::{
- BigEndian, LittleEndian, NativeEndian, ReadBytesExt,
- WriteBytesExt,
- };
- use std::io::Cursor;
-
- #[test]
- fn big_endian() {
- fn prop(n: $ty_int) -> bool {
- let mut wtr = vec![];
- wtr.$write::<BigEndian>(n.clone()).unwrap();
- let offset = wtr.len() - $bytes;
- let mut rdr = Cursor::new(&mut wtr[offset..]);
- n == rdr.$read::<BigEndian>($bytes).unwrap()
- }
- qc_sized(prop as fn($ty_int) -> bool, $max);
- }
-
- #[test]
- fn little_endian() {
- fn prop(n: $ty_int) -> bool {
- let mut wtr = vec![];
- wtr.$write::<LittleEndian>(n.clone()).unwrap();
- let mut rdr = Cursor::new(wtr);
- n == rdr.$read::<LittleEndian>($bytes).unwrap()
- }
- qc_sized(prop as fn($ty_int) -> bool, $max);
- }
-
- #[test]
- fn native_endian() {
- fn prop(n: $ty_int) -> bool {
- let mut wtr = vec![];
- wtr.$write::<NativeEndian>(n.clone()).unwrap();
- let offset = if cfg!(target_endian = "big") {
- wtr.len() - $bytes
- } else {
- 0
- };
- let mut rdr = Cursor::new(&mut wtr[offset..]);
- n == rdr.$read::<NativeEndian>($bytes).unwrap()
- }
- qc_sized(prop as fn($ty_int) -> bool, $max);
- }
- }
- };
- ($name:ident, $ty_int:ty, $max:expr, $read:ident, $write:ident) => {
- mod $name {
- #[allow(unused_imports)]
- use crate::test::{qc_sized, Wi128};
- use crate::{
- BigEndian, LittleEndian, NativeEndian, ReadBytesExt,
- WriteBytesExt,
- };
- use std::io::Cursor;
-
- #[test]
- fn big_endian() {
- fn prop(n: $ty_int) -> bool {
- let mut wtr = vec![];
- wtr.$write::<BigEndian>(n.clone()).unwrap();
- let mut rdr = Cursor::new(wtr);
- n == rdr.$read::<BigEndian>().unwrap()
- }
- qc_sized(prop as fn($ty_int) -> bool, $max - 1);
- }
-
- #[test]
- fn little_endian() {
- fn prop(n: $ty_int) -> bool {
- let mut wtr = vec![];
- wtr.$write::<LittleEndian>(n.clone()).unwrap();
- let mut rdr = Cursor::new(wtr);
- n == rdr.$read::<LittleEndian>().unwrap()
- }
- qc_sized(prop as fn($ty_int) -> bool, $max - 1);
- }
-
- #[test]
- fn native_endian() {
- fn prop(n: $ty_int) -> bool {
- let mut wtr = vec![];
- wtr.$write::<NativeEndian>(n.clone()).unwrap();
- let mut rdr = Cursor::new(wtr);
- n == rdr.$read::<NativeEndian>().unwrap()
- }
- qc_sized(prop as fn($ty_int) -> bool, $max - 1);
- }
- }
- };
- }
-
- qc_bytes_ext!(
- prop_ext_u16,
- u16,
- ::std::u16::MAX as u64,
- read_u16,
- write_u16
- );
- qc_bytes_ext!(
- prop_ext_i16,
- i16,
- ::std::i16::MAX as u64,
- read_i16,
- write_i16
- );
- qc_bytes_ext!(
- prop_ext_u32,
- u32,
- ::std::u32::MAX as u64,
- read_u32,
- write_u32
- );
- qc_bytes_ext!(
- prop_ext_i32,
- i32,
- ::std::i32::MAX as u64,
- read_i32,
- write_i32
- );
- qc_bytes_ext!(
- prop_ext_u64,
- u64,
- ::std::u64::MAX as u64,
- read_u64,
- write_u64
- );
- qc_bytes_ext!(
- prop_ext_i64,
- i64,
- ::std::i64::MAX as u64,
- read_i64,
- write_i64
- );
- qc_bytes_ext!(
- prop_ext_f32,
- f32,
- ::std::u64::MAX as u64,
- read_f32,
- write_f32
- );
- qc_bytes_ext!(
- prop_ext_f64,
- f64,
- ::std::i64::MAX as u64,
- read_f64,
- write_f64
- );
-
- qc_bytes_ext!(prop_ext_u128, Wi128<u128>, 16 + 1, read_u128, write_u128);
- qc_bytes_ext!(prop_ext_i128, Wi128<i128>, 16 + 1, read_i128, write_i128);
-
- qc_bytes_ext!(
- prop_ext_uint_1,
- u64,
- calc_max!(crate::test::U64_MAX, 1),
- 1,
- read_uint,
- write_u64
- );
- qc_bytes_ext!(
- prop_ext_uint_2,
- u64,
- calc_max!(crate::test::U64_MAX, 2),
- 2,
- read_uint,
- write_u64
- );
- qc_bytes_ext!(
- prop_ext_uint_3,
- u64,
- calc_max!(crate::test::U64_MAX, 3),
- 3,
- read_uint,
- write_u64
- );
- qc_bytes_ext!(
- prop_ext_uint_4,
- u64,
- calc_max!(crate::test::U64_MAX, 4),
- 4,
- read_uint,
- write_u64
- );
- qc_bytes_ext!(
- prop_ext_uint_5,
- u64,
- calc_max!(crate::test::U64_MAX, 5),
- 5,
- read_uint,
- write_u64
- );
- qc_bytes_ext!(
- prop_ext_uint_6,
- u64,
- calc_max!(crate::test::U64_MAX, 6),
- 6,
- read_uint,
- write_u64
- );
- qc_bytes_ext!(
- prop_ext_uint_7,
- u64,
- calc_max!(crate::test::U64_MAX, 7),
- 7,
- read_uint,
- write_u64
- );
- qc_bytes_ext!(
- prop_ext_uint_8,
- u64,
- calc_max!(crate::test::U64_MAX, 8),
- 8,
- read_uint,
- write_u64
- );
-
- qc_bytes_ext!(
- prop_ext_uint128_1,
- Wi128<u128>,
- 1,
- 1,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_2,
- Wi128<u128>,
- 2,
- 2,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_3,
- Wi128<u128>,
- 3,
- 3,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_4,
- Wi128<u128>,
- 4,
- 4,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_5,
- Wi128<u128>,
- 5,
- 5,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_6,
- Wi128<u128>,
- 6,
- 6,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_7,
- Wi128<u128>,
- 7,
- 7,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_8,
- Wi128<u128>,
- 8,
- 8,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_9,
- Wi128<u128>,
- 9,
- 9,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_10,
- Wi128<u128>,
- 10,
- 10,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_11,
- Wi128<u128>,
- 11,
- 11,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_12,
- Wi128<u128>,
- 12,
- 12,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_13,
- Wi128<u128>,
- 13,
- 13,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_14,
- Wi128<u128>,
- 14,
- 14,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_15,
- Wi128<u128>,
- 15,
- 15,
- read_uint128,
- write_u128
- );
- qc_bytes_ext!(
- prop_ext_uint128_16,
- Wi128<u128>,
- 16,
- 16,
- read_uint128,
- write_u128
- );
-
- qc_bytes_ext!(
- prop_ext_int_1,
- i64,
- calc_max!(crate::test::I64_MAX, 1),
- 1,
- read_int,
- write_i64
- );
- qc_bytes_ext!(
- prop_ext_int_2,
- i64,
- calc_max!(crate::test::I64_MAX, 2),
- 2,
- read_int,
- write_i64
- );
- qc_bytes_ext!(
- prop_ext_int_3,
- i64,
- calc_max!(crate::test::I64_MAX, 3),
- 3,
- read_int,
- write_i64
- );
- qc_bytes_ext!(
- prop_ext_int_4,
- i64,
- calc_max!(crate::test::I64_MAX, 4),
- 4,
- read_int,
- write_i64
- );
- qc_bytes_ext!(
- prop_ext_int_5,
- i64,
- calc_max!(crate::test::I64_MAX, 5),
- 5,
- read_int,
- write_i64
- );
- qc_bytes_ext!(
- prop_ext_int_6,
- i64,
- calc_max!(crate::test::I64_MAX, 6),
- 6,
- read_int,
- write_i64
- );
- qc_bytes_ext!(
- prop_ext_int_7,
- i64,
- calc_max!(crate::test::I64_MAX, 1),
- 7,
- read_int,
- write_i64
- );
- qc_bytes_ext!(
- prop_ext_int_8,
- i64,
- calc_max!(crate::test::I64_MAX, 8),
- 8,
- read_int,
- write_i64
- );
-
- qc_bytes_ext!(
- prop_ext_int128_1,
- Wi128<i128>,
- 1,
- 1,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_2,
- Wi128<i128>,
- 2,
- 2,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_3,
- Wi128<i128>,
- 3,
- 3,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_4,
- Wi128<i128>,
- 4,
- 4,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_5,
- Wi128<i128>,
- 5,
- 5,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_6,
- Wi128<i128>,
- 6,
- 6,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_7,
- Wi128<i128>,
- 7,
- 7,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_8,
- Wi128<i128>,
- 8,
- 8,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_9,
- Wi128<i128>,
- 9,
- 9,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_10,
- Wi128<i128>,
- 10,
- 10,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_11,
- Wi128<i128>,
- 11,
- 11,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_12,
- Wi128<i128>,
- 12,
- 12,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_13,
- Wi128<i128>,
- 13,
- 13,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_14,
- Wi128<i128>,
- 14,
- 14,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_15,
- Wi128<i128>,
- 15,
- 15,
- read_int128,
- write_i128
- );
- qc_bytes_ext!(
- prop_ext_int128_16,
- Wi128<i128>,
- 16,
- 16,
- read_int128,
- write_i128
- );
-
- macro_rules! qc_slice {
- ($name:ident, $ty_int:ty, $read:ident, $write:ident, $zero:expr) => {
- mod $name {
- use super::qc_unsized;
- #[allow(unused_imports)]
- use crate::test::Wi128;
- use crate::{
- BigEndian, ByteOrder, LittleEndian, NativeEndian,
- };
- use core::mem::size_of;
-
- #[test]
- fn big_endian() {
- #[allow(unused_unsafe)]
- fn prop(numbers: Vec<$ty_int>) -> bool {
- let numbers: Vec<_> =
- numbers.into_iter().map(|x| x.clone()).collect();
- let num_bytes = size_of::<$ty_int>() * numbers.len();
- let mut bytes = vec![0; num_bytes];
-
- BigEndian::$write(&numbers, &mut bytes);
-
- let mut got = vec![$zero; numbers.len()];
- unsafe {
- BigEndian::$read(&bytes, &mut got);
- }
-
- numbers == got
- }
- qc_unsized(prop as fn(_) -> bool);
- }
-
- #[test]
- fn little_endian() {
- #[allow(unused_unsafe)]
- fn prop(numbers: Vec<$ty_int>) -> bool {
- let numbers: Vec<_> =
- numbers.into_iter().map(|x| x.clone()).collect();
- let num_bytes = size_of::<$ty_int>() * numbers.len();
- let mut bytes = vec![0; num_bytes];
-
- LittleEndian::$write(&numbers, &mut bytes);
-
- let mut got = vec![$zero; numbers.len()];
- unsafe {
- LittleEndian::$read(&bytes, &mut got);
- }
-
- numbers == got
- }
- qc_unsized(prop as fn(_) -> bool);
- }
-
- #[test]
- fn native_endian() {
- #[allow(unused_unsafe)]
- fn prop(numbers: Vec<$ty_int>) -> bool {
- let numbers: Vec<_> =
- numbers.into_iter().map(|x| x.clone()).collect();
- let num_bytes = size_of::<$ty_int>() * numbers.len();
- let mut bytes = vec![0; num_bytes];
-
- NativeEndian::$write(&numbers, &mut bytes);
-
- let mut got = vec![$zero; numbers.len()];
- unsafe {
- NativeEndian::$read(&bytes, &mut got);
- }
-
- numbers == got
- }
- qc_unsized(prop as fn(_) -> bool);
- }
- }
- };
- }
-
- qc_slice!(prop_slice_u16, u16, read_u16_into, write_u16_into, 0);
- qc_slice!(prop_slice_i16, i16, read_i16_into, write_i16_into, 0);
- qc_slice!(prop_slice_u32, u32, read_u32_into, write_u32_into, 0);
- qc_slice!(prop_slice_i32, i32, read_i32_into, write_i32_into, 0);
- qc_slice!(prop_slice_u64, u64, read_u64_into, write_u64_into, 0);
- qc_slice!(prop_slice_i64, i64, read_i64_into, write_i64_into, 0);
- qc_slice!(
- prop_slice_u128,
- Wi128<u128>,
- read_u128_into,
- write_u128_into,
- 0
- );
- qc_slice!(
- prop_slice_i128,
- Wi128<i128>,
- read_i128_into,
- write_i128_into,
- 0
- );
-
- qc_slice!(prop_slice_f32, f32, read_f32_into, write_f32_into, 0.0);
- qc_slice!(prop_slice_f64, f64, read_f64_into, write_f64_into, 0.0);
-}
-
