diff options
Diffstat (limited to 'vendor/byteorder/src/lib.rs')
| -rw-r--r-- | vendor/byteorder/src/lib.rs | 4052 |
1 files changed, 0 insertions, 4052 deletions
diff --git a/vendor/byteorder/src/lib.rs b/vendor/byteorder/src/lib.rs deleted file mode 100644 index cc37cca6a..000000000 --- a/vendor/byteorder/src/lib.rs +++ /dev/null @@ -1,4052 +0,0 @@ -/*! -This crate provides convenience methods for encoding and decoding numbers in -either [big-endian or little-endian order]. - -The organization of the crate is pretty simple. A trait, [`ByteOrder`], specifies -byte conversion methods for each type of number in Rust (sans numbers that have -a platform dependent size like `usize` and `isize`). Two types, [`BigEndian`] -and [`LittleEndian`] implement these methods. Finally, [`ReadBytesExt`] and -[`WriteBytesExt`] provide convenience methods available to all types that -implement [`Read`] and [`Write`]. - -An alias, [`NetworkEndian`], for [`BigEndian`] is provided to help improve -code clarity. - -An additional alias, [`NativeEndian`], is provided for the endianness of the -local platform. This is convenient when serializing data for use and -conversions are not desired. - -# Examples - -Read unsigned 16 bit big-endian integers from a [`Read`] type: - -```rust -use std::io::Cursor; -use byteorder::{BigEndian, ReadBytesExt}; - -let mut rdr = Cursor::new(vec![2, 5, 3, 0]); -// Note that we use type parameters to indicate which kind of byte order -// we want! -assert_eq!(517, rdr.read_u16::<BigEndian>().unwrap()); -assert_eq!(768, rdr.read_u16::<BigEndian>().unwrap()); -``` - -Write unsigned 16 bit little-endian integers to a [`Write`] type: - -```rust -use byteorder::{LittleEndian, WriteBytesExt}; - -let mut wtr = vec![]; -wtr.write_u16::<LittleEndian>(517).unwrap(); -wtr.write_u16::<LittleEndian>(768).unwrap(); -assert_eq!(wtr, vec![5, 2, 0, 3]); -``` - -# Optional Features - -This crate optionally provides support for 128 bit values (`i128` and `u128`) -when built with the `i128` feature enabled. - -This crate can also be used without the standard library. - -# Alternatives - -Note that as of Rust 1.32, the standard numeric types provide built-in methods -like `to_le_bytes` and `from_le_bytes`, which support some of the same use -cases. - -[big-endian or little-endian order]: https://en.wikipedia.org/wiki/Endianness -[`ByteOrder`]: trait.ByteOrder.html -[`BigEndian`]: enum.BigEndian.html -[`LittleEndian`]: enum.LittleEndian.html -[`ReadBytesExt`]: trait.ReadBytesExt.html -[`WriteBytesExt`]: trait.WriteBytesExt.html -[`NetworkEndian`]: type.NetworkEndian.html -[`NativeEndian`]: type.NativeEndian.html -[`Read`]: https://doc.rust-lang.org/std/io/trait.Read.html -[`Write`]: https://doc.rust-lang.org/std/io/trait.Write.html -*/ - -#![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 { - /// Sealed stops crates other than byteorder from implementing any traits - /// that use it. - pub trait Sealed {} - impl Sealed for super::LittleEndian {} - impl Sealed for super::BigEndian {} -} - -/// `ByteOrder` describes types that can serialize integers as bytes. -/// -/// Note that `Self` does not appear anywhere in this trait's definition! -/// Therefore, in order to use it, you'll need to use syntax like -/// `T::read_u16(&[0, 1])` where `T` implements `ByteOrder`. -/// -/// This crate provides two types that implement `ByteOrder`: [`BigEndian`] -/// and [`LittleEndian`]. -/// This trait is sealed and cannot be implemented for callers to avoid -/// breaking backwards compatibility when adding new derived traits. -/// -/// # Examples -/// -/// Write and read `u32` numbers in little endian order: -/// -/// ```rust -/// use byteorder::{ByteOrder, LittleEndian}; -/// -/// let mut buf = [0; 4]; -/// LittleEndian::write_u32(&mut buf, 1_000_000); -/// assert_eq!(1_000_000, LittleEndian::read_u32(&buf)); -/// ``` -/// -/// Write and read `i16` numbers in big endian order: -/// -/// ```rust -/// use byteorder::{ByteOrder, BigEndian}; -/// -/// let mut buf = [0; 2]; -/// BigEndian::write_i16(&mut buf, -5_000); -/// assert_eq!(-5_000, BigEndian::read_i16(&buf)); -/// ``` -/// -/// [`BigEndian`]: enum.BigEndian.html -/// [`LittleEndian`]: enum.LittleEndian.html -pub trait ByteOrder: - Clone - + Copy - + Debug - + Default - + Eq - + Hash - + Ord - + PartialEq - + PartialOrd - + private::Sealed -{ - /// Reads an unsigned 16 bit integer from `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 2`. - fn read_u16(buf: &[u8]) -> u16; - - /// Reads an unsigned 24 bit integer from `buf`, stored in u32. - /// - /// # Panics - /// - /// Panics when `buf.len() < 3`. - /// - /// # Examples - /// - /// Write and read 24 bit `u32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 3]; - /// LittleEndian::write_u24(&mut buf, 1_000_000); - /// assert_eq!(1_000_000, LittleEndian::read_u24(&buf)); - /// ``` - fn read_u24(buf: &[u8]) -> u32 { - Self::read_uint(buf, 3) as u32 - } - - /// Reads an unsigned 32 bit integer from `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 4`. - /// - /// # Examples - /// - /// Write and read `u32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 4]; - /// LittleEndian::write_u32(&mut buf, 1_000_000); - /// assert_eq!(1_000_000, LittleEndian::read_u32(&buf)); - /// ``` - fn read_u32(buf: &[u8]) -> u32; - - /// Reads an unsigned 48 bit integer from `buf`, stored in u64. - /// - /// # Panics - /// - /// Panics when `buf.len() < 6`. - /// - /// # Examples - /// - /// Write and read 48 bit `u64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 6]; - /// LittleEndian::write_u48(&mut buf, 1_000_000_000_000); - /// assert_eq!(1_000_000_000_000, LittleEndian::read_u48(&buf)); - /// ``` - fn read_u48(buf: &[u8]) -> u64 { - Self::read_uint(buf, 6) as u64 - } - - /// Reads an unsigned 64 bit integer from `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 8`. - /// - /// # Examples - /// - /// Write and read `u64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 8]; - /// LittleEndian::write_u64(&mut buf, 1_000_000); - /// assert_eq!(1_000_000, LittleEndian::read_u64(&buf)); - /// ``` - fn read_u64(buf: &[u8]) -> u64; - - /// Reads an unsigned 128 bit integer from `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 16`. - /// - /// # Examples - /// - /// Write and read `u128` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 16]; - /// LittleEndian::write_u128(&mut buf, 1_000_000); - /// assert_eq!(1_000_000, LittleEndian::read_u128(&buf)); - /// ``` - fn read_u128(buf: &[u8]) -> u128; - - /// Reads an unsigned n-bytes integer from `buf`. - /// - /// # Panics - /// - /// Panics when `nbytes < 1` or `nbytes > 8` or - /// `buf.len() < nbytes` - /// - /// # Examples - /// - /// Write and read an n-byte number in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 3]; - /// LittleEndian::write_uint(&mut buf, 1_000_000, 3); - /// assert_eq!(1_000_000, LittleEndian::read_uint(&buf, 3)); - /// ``` - fn read_uint(buf: &[u8], nbytes: usize) -> u64; - - /// Reads an unsigned n-bytes integer from `buf`. - /// - /// # Panics - /// - /// Panics when `nbytes < 1` or `nbytes > 16` or - /// `buf.len() < nbytes` - /// - /// # Examples - /// - /// Write and read an n-byte number in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 3]; - /// LittleEndian::write_uint128(&mut buf, 1_000_000, 3); - /// assert_eq!(1_000_000, LittleEndian::read_uint128(&buf, 3)); - /// ``` - fn read_uint128(buf: &[u8], nbytes: usize) -> u128; - - /// Writes an unsigned 16 bit integer `n` to `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 2`. - /// - /// # Examples - /// - /// Write and read `u16` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 2]; - /// LittleEndian::write_u16(&mut buf, 1_000); - /// assert_eq!(1_000, LittleEndian::read_u16(&buf)); - /// ``` - fn write_u16(buf: &mut [u8], n: u16); - - /// Writes an unsigned 24 bit integer `n` to `buf`, stored in u32. - /// - /// # Panics - /// - /// Panics when `buf.len() < 3`. - /// - /// # Examples - /// - /// Write and read 24 bit `u32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 3]; - /// LittleEndian::write_u24(&mut buf, 1_000_000); - /// assert_eq!(1_000_000, LittleEndian::read_u24(&buf)); - /// ``` - fn write_u24(buf: &mut [u8], n: u32) { - Self::write_uint(buf, n as u64, 3) - } - - /// Writes an unsigned 32 bit integer `n` to `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 4`. - /// - /// # Examples - /// - /// Write and read `u32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 4]; - /// LittleEndian::write_u32(&mut buf, 1_000_000); - /// assert_eq!(1_000_000, LittleEndian::read_u32(&buf)); - /// ``` - fn write_u32(buf: &mut [u8], n: u32); - - /// Writes an unsigned 48 bit integer `n` to `buf`, stored in u64. - /// - /// # Panics - /// - /// Panics when `buf.len() < 6`. - /// - /// # Examples - /// - /// Write and read 48 bit `u64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 6]; - /// LittleEndian::write_u48(&mut buf, 1_000_000_000_000); - /// assert_eq!(1_000_000_000_000, LittleEndian::read_u48(&buf)); - /// ``` - fn write_u48(buf: &mut [u8], n: u64) { - Self::write_uint(buf, n as u64, 6) - } - - /// Writes an unsigned 64 bit integer `n` to `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 8`. - /// - /// # Examples - /// - /// Write and read `u64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 8]; - /// LittleEndian::write_u64(&mut buf, 1_000_000); - /// assert_eq!(1_000_000, LittleEndian::read_u64(&buf)); - /// ``` - fn write_u64(buf: &mut [u8], n: u64); - - /// Writes an unsigned 128 bit integer `n` to `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 16`. - /// - /// # Examples - /// - /// Write and read `u128` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 16]; - /// LittleEndian::write_u128(&mut buf, 1_000_000); - /// assert_eq!(1_000_000, LittleEndian::read_u128(&buf)); - /// ``` - fn write_u128(buf: &mut [u8], n: u128); - - /// Writes an unsigned integer `n` to `buf` using only `nbytes`. - /// - /// # Panics - /// - /// If `n` is not representable in `nbytes`, or if `nbytes` is `> 8`, then - /// this method panics. - /// - /// # Examples - /// - /// Write and read an n-byte number in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 3]; - /// LittleEndian::write_uint(&mut buf, 1_000_000, 3); - /// assert_eq!(1_000_000, LittleEndian::read_uint(&buf, 3)); - /// ``` - fn write_uint(buf: &mut [u8], n: u64, nbytes: usize); - - /// Writes an unsigned integer `n` to `buf` using only `nbytes`. - /// - /// # Panics - /// - /// If `n` is not representable in `nbytes`, or if `nbytes` is `> 16`, then - /// this method panics. - /// - /// # Examples - /// - /// Write and read an n-byte number in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 3]; - /// LittleEndian::write_uint128(&mut buf, 1_000_000, 3); - /// assert_eq!(1_000_000, LittleEndian::read_uint128(&buf, 3)); - /// ``` - fn write_uint128(buf: &mut [u8], n: u128, nbytes: usize); - - /// Reads a signed 16 bit integer from `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 2`. - /// - /// # Examples - /// - /// Write and read `i16` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 2]; - /// LittleEndian::write_i16(&mut buf, -1_000); - /// assert_eq!(-1_000, LittleEndian::read_i16(&buf)); - /// ``` - #[inline] - fn read_i16(buf: &[u8]) -> i16 { - Self::read_u16(buf) as i16 - } - - /// Reads a signed 24 bit integer from `buf`, stored in i32. - /// - /// # Panics - /// - /// Panics when `buf.len() < 3`. - /// - /// # Examples - /// - /// Write and read 24 bit `i32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 3]; - /// LittleEndian::write_i24(&mut buf, -1_000_000); - /// assert_eq!(-1_000_000, LittleEndian::read_i24(&buf)); - /// ``` - #[inline] - fn read_i24(buf: &[u8]) -> i32 { - Self::read_int(buf, 3) as i32 - } - - /// Reads a signed 32 bit integer from `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 4`. - /// - /// # Examples - /// - /// Write and read `i32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 4]; - /// LittleEndian::write_i32(&mut buf, -1_000_000); - /// assert_eq!(-1_000_000, LittleEndian::read_i32(&buf)); - /// ``` - #[inline] - fn read_i32(buf: &[u8]) -> i32 { - Self::read_u32(buf) as i32 - } - - /// Reads a signed 48 bit integer from `buf`, stored in i64. - /// - /// # Panics - /// - /// Panics when `buf.len() < 6`. - /// - /// # Examples - /// - /// Write and read 48 bit `i64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 6]; - /// LittleEndian::write_i48(&mut buf, -1_000_000_000_000); - /// assert_eq!(-1_000_000_000_000, LittleEndian::read_i48(&buf)); - /// ``` - #[inline] - fn read_i48(buf: &[u8]) -> i64 { - Self::read_int(buf, 6) as i64 - } - - /// Reads a signed 64 bit integer from `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 8`. - /// - /// # Examples - /// - /// Write and read `i64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 8]; - /// LittleEndian::write_i64(&mut buf, -1_000_000_000); - /// assert_eq!(-1_000_000_000, LittleEndian::read_i64(&buf)); - /// ``` - #[inline] - fn read_i64(buf: &[u8]) -> i64 { - Self::read_u64(buf) as i64 - } - - /// Reads a signed 128 bit integer from `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 16`. - /// - /// # Examples - /// - /// Write and read `i128` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 16]; - /// LittleEndian::write_i128(&mut buf, -1_000_000_000); - /// assert_eq!(-1_000_000_000, LittleEndian::read_i128(&buf)); - /// ``` - #[inline] - fn read_i128(buf: &[u8]) -> i128 { - Self::read_u128(buf) as i128 - } - - /// Reads a signed n-bytes integer from `buf`. - /// - /// # Panics - /// - /// Panics when `nbytes < 1` or `nbytes > 8` or - /// `buf.len() < nbytes` - /// - /// # Examples - /// - /// Write and read n-length signed numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 3]; - /// LittleEndian::write_int(&mut buf, -1_000, 3); - /// assert_eq!(-1_000, LittleEndian::read_int(&buf, 3)); - /// ``` - #[inline] - fn read_int(buf: &[u8], nbytes: usize) -> i64 { - extend_sign(Self::read_uint(buf, nbytes), nbytes) - } - - /// Reads a signed n-bytes integer from `buf`. - /// - /// # Panics - /// - /// Panics when `nbytes < 1` or `nbytes > 16` or - /// `buf.len() < nbytes` - /// - /// # Examples - /// - /// Write and read n-length signed numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 3]; - /// LittleEndian::write_int128(&mut buf, -1_000, 3); - /// assert_eq!(-1_000, LittleEndian::read_int128(&buf, 3)); - /// ``` - #[inline] - fn read_int128(buf: &[u8], nbytes: usize) -> i128 { - extend_sign128(Self::read_uint128(buf, nbytes), nbytes) - } - - /// Reads a IEEE754 single-precision (4 bytes) floating point number. - /// - /// # Panics - /// - /// Panics when `buf.len() < 4`. - /// - /// # Examples - /// - /// Write and read `f32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let e = 2.71828; - /// let mut buf = [0; 4]; - /// LittleEndian::write_f32(&mut buf, e); - /// assert_eq!(e, LittleEndian::read_f32(&buf)); - /// ``` - #[inline] - fn read_f32(buf: &[u8]) -> f32 { - f32::from_bits(Self::read_u32(buf)) - } - - /// Reads a IEEE754 double-precision (8 bytes) floating point number. - /// - /// # Panics - /// - /// Panics when `buf.len() < 8`. - /// - /// # Examples - /// - /// Write and read `f64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let phi = 1.6180339887; - /// let mut buf = [0; 8]; - /// LittleEndian::write_f64(&mut buf, phi); - /// assert_eq!(phi, LittleEndian::read_f64(&buf)); - /// ``` - #[inline] - fn read_f64(buf: &[u8]) -> f64 { - f64::from_bits(Self::read_u64(buf)) - } - - /// Writes a signed 16 bit integer `n` to `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 2`. - /// - /// # Examples - /// - /// Write and read `i16` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 2]; - /// LittleEndian::write_i16(&mut buf, -1_000); - /// assert_eq!(-1_000, LittleEndian::read_i16(&buf)); - /// ``` - #[inline] - fn write_i16(buf: &mut [u8], n: i16) { - Self::write_u16(buf, n as u16) - } - - /// Writes a signed 24 bit integer `n` to `buf`, stored in i32. - /// - /// # Panics - /// - /// Panics when `buf.len() < 3`. - /// - /// # Examples - /// - /// Write and read 24 bit `i32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 3]; - /// LittleEndian::write_i24(&mut buf, -1_000_000); - /// assert_eq!(-1_000_000, LittleEndian::read_i24(&buf)); - /// ``` - #[inline] - fn write_i24(buf: &mut [u8], n: i32) { - Self::write_int(buf, n as i64, 3) - } - - /// Writes a signed 32 bit integer `n` to `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 4`. - /// - /// # Examples - /// - /// Write and read `i32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 4]; - /// LittleEndian::write_i32(&mut buf, -1_000_000); - /// assert_eq!(-1_000_000, LittleEndian::read_i32(&buf)); - /// ``` - #[inline] - fn write_i32(buf: &mut [u8], n: i32) { - Self::write_u32(buf, n as u32) - } - - /// Writes a signed 48 bit integer `n` to `buf`, stored in i64. - /// - /// # Panics - /// - /// Panics when `buf.len() < 6`. - /// - /// # Examples - /// - /// Write and read 48 bit `i64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 6]; - /// LittleEndian::write_i48(&mut buf, -1_000_000_000_000); - /// assert_eq!(-1_000_000_000_000, LittleEndian::read_i48(&buf)); - /// ``` - #[inline] - fn write_i48(buf: &mut [u8], n: i64) { - Self::write_int(buf, n as i64, 6) - } - - /// Writes a signed 64 bit integer `n` to `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 8`. - /// - /// # Examples - /// - /// Write and read `i64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 8]; - /// LittleEndian::write_i64(&mut buf, -1_000_000_000); - /// assert_eq!(-1_000_000_000, LittleEndian::read_i64(&buf)); - /// ``` - #[inline] - fn write_i64(buf: &mut [u8], n: i64) { - Self::write_u64(buf, n as u64) - } - - /// Writes a signed 128 bit integer `n` to `buf`. - /// - /// # Panics - /// - /// Panics when `buf.len() < 16`. - /// - /// # Examples - /// - /// Write and read n-byte `i128` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 16]; - /// LittleEndian::write_i128(&mut buf, -1_000_000_000); - /// assert_eq!(-1_000_000_000, LittleEndian::read_i128(&buf)); - /// ``` - #[inline] - fn write_i128(buf: &mut [u8], n: i128) { - Self::write_u128(buf, n as u128) - } - - /// Writes a signed integer `n` to `buf` using only `nbytes`. - /// - /// # Panics - /// - /// If `n` is not representable in `nbytes`, or if `nbytes` is `> 8`, then - /// this method panics. - /// - /// # Examples - /// - /// Write and read an n-byte number in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 3]; - /// LittleEndian::write_int(&mut buf, -1_000, 3); - /// assert_eq!(-1_000, LittleEndian::read_int(&buf, 3)); - /// ``` - #[inline] - fn write_int(buf: &mut [u8], n: i64, nbytes: usize) { - Self::write_uint(buf, unextend_sign(n, nbytes), nbytes) - } - - /// Writes a signed integer `n` to `buf` using only `nbytes`. - /// - /// # Panics - /// - /// If `n` is not representable in `nbytes`, or if `nbytes` is `> 16`, then - /// this method panics. - /// - /// # Examples - /// - /// Write and read n-length signed numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut buf = [0; 3]; - /// LittleEndian::write_int128(&mut buf, -1_000, 3); - /// assert_eq!(-1_000, LittleEndian::read_int128(&buf, 3)); - /// ``` - #[inline] - fn write_int128(buf: &mut [u8], n: i128, nbytes: usize) { - Self::write_uint128(buf, unextend_sign128(n, nbytes), nbytes) - } - - /// Writes a IEEE754 single-precision (4 bytes) floating point number. - /// - /// # Panics - /// - /// Panics when `buf.len() < 4`. - /// - /// # Examples - /// - /// Write and read `f32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let e = 2.71828; - /// let mut buf = [0; 4]; - /// LittleEndian::write_f32(&mut buf, e); - /// assert_eq!(e, LittleEndian::read_f32(&buf)); - /// ``` - #[inline] - fn write_f32(buf: &mut [u8], n: f32) { - Self::write_u32(buf, n.to_bits()) - } - - /// Writes a IEEE754 double-precision (8 bytes) floating point number. - /// - /// # Panics - /// - /// Panics when `buf.len() < 8`. - /// - /// # Examples - /// - /// Write and read `f64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let phi = 1.6180339887; - /// let mut buf = [0; 8]; - /// LittleEndian::write_f64(&mut buf, phi); - /// assert_eq!(phi, LittleEndian::read_f64(&buf)); - /// ``` - #[inline] - fn write_f64(buf: &mut [u8], n: f64) { - Self::write_u64(buf, n.to_bits()) - } - - /// Reads unsigned 16 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 2*dst.len()`. - /// - /// # Examples - /// - /// Write and read `u16` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 8]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_u16_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_u16_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - fn read_u16_into(src: &[u8], dst: &mut [u16]); - - /// Reads unsigned 32 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 4*dst.len()`. - /// - /// # Examples - /// - /// Write and read `u32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 16]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_u32_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_u32_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - fn read_u32_into(src: &[u8], dst: &mut [u32]); - - /// Reads unsigned 64 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 8*dst.len()`. - /// - /// # Examples - /// - /// Write and read `u64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 32]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_u64_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_u64_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - fn read_u64_into(src: &[u8], dst: &mut [u64]); - - /// Reads unsigned 128 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 16*dst.len()`. - /// - /// # Examples - /// - /// Write and read `u128` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 64]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_u128_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_u128_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - fn read_u128_into(src: &[u8], dst: &mut [u128]); - - /// Reads signed 16 bit integers from `src` to `dst`. - /// - /// # Panics - /// - /// Panics when `buf.len() != 2*dst.len()`. - /// - /// # Examples - /// - /// Write and read `i16` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 8]; - /// let numbers_given = [1, 2, 0x0f, 0xee]; - /// LittleEndian::write_i16_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_i16_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - #[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) - } - - /// Reads signed 32 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 4*dst.len()`. - /// - /// # Examples - /// - /// Write and read `i32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 16]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_i32_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_i32_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - #[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); - } - - /// Reads signed 64 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 8*dst.len()`. - /// - /// # Examples - /// - /// Write and read `i64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 32]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_i64_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_i64_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - #[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); - } - - /// Reads signed 128 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 16*dst.len()`. - /// - /// # Examples - /// - /// Write and read `i128` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 64]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_i128_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_i128_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - #[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); - } - - /// Reads IEEE754 single-precision (4 bytes) floating point numbers from - /// `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 4*dst.len()`. - /// - /// # Examples - /// - /// Write and read `f32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 16]; - /// let numbers_given = [1.0, 2.0, 31.312e31, -11.32e19]; - /// LittleEndian::write_f32_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0.0; 4]; - /// LittleEndian::read_f32_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - #[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); - } - - /// **DEPRECATED**. - /// - /// This method is deprecated. Use `read_f32_into` instead. - /// Reads IEEE754 single-precision (4 bytes) floating point numbers from - /// `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 4*dst.len()`. - /// - /// # Examples - /// - /// Write and read `f32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 16]; - /// let numbers_given = [1.0, 2.0, 31.312e31, -11.32e19]; - /// LittleEndian::write_f32_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0.0; 4]; - /// LittleEndian::read_f32_into_unchecked(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - #[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); - } - - /// Reads IEEE754 single-precision (4 bytes) floating point numbers from - /// `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 8*dst.len()`. - /// - /// # Examples - /// - /// Write and read `f64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 32]; - /// let numbers_given = [1.0, 2.0, 31.312e211, -11.32e91]; - /// LittleEndian::write_f64_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0.0; 4]; - /// LittleEndian::read_f64_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - #[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); - } - - /// **DEPRECATED**. - /// - /// This method is deprecated. Use `read_f64_into` instead. - /// - /// Reads IEEE754 single-precision (4 bytes) floating point numbers from - /// `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 8*dst.len()`. - /// - /// # Examples - /// - /// Write and read `f64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 32]; - /// let numbers_given = [1.0, 2.0, 31.312e211, -11.32e91]; - /// LittleEndian::write_f64_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0.0; 4]; - /// LittleEndian::read_f64_into_unchecked(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - #[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); - } - - /// Writes unsigned 16 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `dst.len() != 2*src.len()`. - /// - /// # Examples - /// - /// Write and read `u16` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 8]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_u16_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_u16_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - fn write_u16_into(src: &[u16], dst: &mut [u8]); - - /// Writes unsigned 32 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `dst.len() != 4*src.len()`. - /// - /// # Examples - /// - /// Write and read `u32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 16]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_u32_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_u32_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - fn write_u32_into(src: &[u32], dst: &mut [u8]); - - /// Writes unsigned 64 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `dst.len() != 8*src.len()`. - /// - /// # Examples - /// - /// Write and read `u64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 32]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_u64_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_u64_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - fn write_u64_into(src: &[u64], dst: &mut [u8]); - - /// Writes unsigned 128 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `dst.len() != 16*src.len()`. - /// - /// # Examples - /// - /// Write and read `u128` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 64]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_u128_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_u128_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - fn write_u128_into(src: &[u128], dst: &mut [u8]); - - /// Writes signed 8 bit integers from `src` into `dst`. - /// - /// Note that since each `i8` is a single byte, no byte order conversions - /// are used. This method is included because it provides a safe, simple - /// way for the caller to write from a `&[i8]` buffer. (Without this - /// method, the caller would have to either use `unsafe` code or convert - /// each byte to `u8` individually.) - /// - /// # Panics - /// - /// Panics when `buf.len() != src.len()`. - /// - /// # Examples - /// - /// Write and read `i8` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian, ReadBytesExt}; - /// - /// let mut bytes = [0; 4]; - /// let numbers_given = [1, 2, 0xf, 0xe]; - /// LittleEndian::write_i8_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// bytes.as_ref().read_i8_into(&mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - 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); - } - - /// Writes signed 16 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `buf.len() != 2*src.len()`. - /// - /// # Examples - /// - /// Write and read `i16` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 8]; - /// let numbers_given = [1, 2, 0x0f, 0xee]; - /// LittleEndian::write_i16_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_i16_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - 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); - } - - /// Writes signed 32 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `dst.len() != 4*src.len()`. - /// - /// # Examples - /// - /// Write and read `i32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 16]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_i32_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_i32_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - 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); - } - - /// Writes signed 64 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `dst.len() != 8*src.len()`. - /// - /// # Examples - /// - /// Write and read `i64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 32]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_i64_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_i64_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - 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); - } - - /// Writes signed 128 bit integers from `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `dst.len() != 16*src.len()`. - /// - /// # Examples - /// - /// Write and read `i128` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 64]; - /// let numbers_given = [1, 2, 0xf00f, 0xffee]; - /// LittleEndian::write_i128_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0; 4]; - /// LittleEndian::read_i128_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - 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); - } - - /// Writes IEEE754 single-precision (4 bytes) floating point numbers from - /// `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 4*dst.len()`. - /// - /// # Examples - /// - /// Write and read `f32` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 16]; - /// let numbers_given = [1.0, 2.0, 31.312e31, -11.32e19]; - /// LittleEndian::write_f32_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0.0; 4]; - /// LittleEndian::read_f32_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - 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); - } - - /// Writes IEEE754 double-precision (8 bytes) floating point numbers from - /// `src` into `dst`. - /// - /// # Panics - /// - /// Panics when `src.len() != 8*dst.len()`. - /// - /// # Examples - /// - /// Write and read `f64` numbers in little endian order: - /// - /// ```rust - /// use byteorder::{ByteOrder, LittleEndian}; - /// - /// let mut bytes = [0; 32]; - /// let numbers_given = [1.0, 2.0, 31.312e211, -11.32e91]; - /// LittleEndian::write_f64_into(&numbers_given, &mut bytes); - /// - /// let mut numbers_got = [0.0; 4]; - /// LittleEndian::read_f64_into(&bytes, &mut numbers_got); - /// assert_eq!(numbers_given, numbers_got); - /// ``` - 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); - } - - /// Converts the given slice of unsigned 16 bit integers to a particular - /// endianness. - /// - /// If the endianness matches the endianness of the host platform, then - /// this is a no-op. - /// - /// # Examples - /// - /// Convert the host platform's endianness to big-endian: - /// - /// ```rust - /// use byteorder::{ByteOrder, BigEndian}; - /// - /// let mut numbers = [5, 65000]; - /// BigEndian::from_slice_u16(&mut numbers); - /// assert_eq!(numbers, [5u16.to_be(), 65000u16.to_be()]); - /// ``` - fn from_slice_u16(numbers: &mut [u16]); - - /// Converts the given slice of unsigned 32 bit integers to a particular - /// endianness. - /// - /// If the endianness matches the endianness of the host platform, then - /// this is a no-op. - /// - /// # Examples - /// - /// Convert the host platform's endianness to big-endian: - /// - /// ```rust - /// use byteorder::{ByteOrder, BigEndian}; - /// - /// let mut numbers = [5, 65000]; - /// BigEndian::from_slice_u32(&mut numbers); - /// assert_eq!(numbers, [5u32.to_be(), 65000u32.to_be()]); - /// ``` - fn from_slice_u32(numbers: &mut [u32]); - - /// Converts the given slice of unsigned 64 bit integers to a particular - /// endianness. - /// - /// If the endianness matches the endianness of the host platform, then - /// this is a no-op. - /// - /// # Examples - /// - /// Convert the host platform's endianness to big-endian: - /// - /// ```rust - /// use byteorder::{ByteOrder, BigEndian}; - /// - /// let mut numbers = [5, 65000]; - /// BigEndian::from_slice_u64(&mut numbers); - /// assert_eq!(numbers, [5u64.to_be(), 65000u64.to_be()]); - /// ``` - fn from_slice_u64(numbers: &mut [u64]); - - /// Converts the given slice of unsigned 128 bit integers to a particular - /// endianness. - /// - /// If the endianness matches the endianness of the host platform, then - /// this is a no-op. - /// - /// # Examples - /// - /// Convert the host platform's endianness to big-endian: - /// - /// ```rust - /// use byteorder::{ByteOrder, BigEndian}; - /// - /// let mut numbers = [5, 65000]; - /// BigEndian::from_slice_u128(&mut numbers); - /// assert_eq!(numbers, [5u128.to_be(), 65000u128.to_be()]); - /// ``` - fn from_slice_u128(numbers: &mut [u128]); - - /// Converts the given slice of signed 16 bit integers to a particular - /// endianness. - /// - /// If the endianness matches the endianness of the host platform, then - /// this is a no-op. - /// - /// # Examples - /// - /// Convert the host platform's endianness to big-endian: - /// - /// ```rust - /// use byteorder::{ByteOrder, BigEndian}; - /// - /// let mut numbers = [5, 6500]; - /// BigEndian::from_slice_i16(&mut numbers); - /// assert_eq!(numbers, [5i16.to_be(), 6500i16.to_be()]); - /// ``` - #[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); - } - - /// Converts the given slice of signed 32 bit integers to a particular - /// endianness. - /// - /// If the endianness matches the endianness of the host platform, then - /// this is a no-op. - /// - /// # Examples - /// - /// Convert the host platform's endianness to big-endian: - /// - /// ```rust - /// use byteorder::{ByteOrder, BigEndian}; - /// - /// let mut numbers = [5, 65000]; - /// BigEndian::from_slice_i32(&mut numbers); - /// assert_eq!(numbers, [5i32.to_be(), 65000i32.to_be()]); - /// ``` - #[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); - } - - /// Converts the given slice of signed 64 bit integers to a particular - /// endianness. - /// - /// If the endianness matches the endianness of the host platform, then - /// this is a no-op. - /// - /// # Examples - /// - /// Convert the host platform's endianness to big-endian: - /// - /// ```rust - /// use byteorder::{ByteOrder, BigEndian}; - /// - /// let mut numbers = [5, 65000]; - /// BigEndian::from_slice_i64(&mut numbers); - /// assert_eq!(numbers, [5i64.to_be(), 65000i64.to_be()]); - /// ``` - #[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); - } - - /// Converts the given slice of signed 128 bit integers to a particular - /// endianness. - /// - /// If the endianness matches the endianness of the host platform, then - /// this is a no-op. - /// - /// # Examples - /// - /// Convert the host platform's endianness to big-endian: - /// - /// ```rust - /// use byteorder::{ByteOrder, BigEndian}; - /// - /// let mut numbers = [5, 65000]; - /// BigEndian::from_slice_i128(&mut numbers); - /// assert_eq!(numbers, [5i128.to_be(), 65000i128.to_be()]); - /// ``` - #[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); - } - - /// Converts the given slice of IEEE754 single-precision (4 bytes) floating - /// point numbers to a particular endianness. - /// - /// If the endianness matches the endianness of the host platform, then - /// this is a no-op. - fn from_slice_f32(numbers: &mut [f32]); - - /// Converts the given slice of IEEE754 double-precision (8 bytes) floating - /// point numbers to a particular endianness. - /// - /// If the endianness matches the endianness of the host platform, then - /// this is a no-op. - fn from_slice_f64(numbers: &mut [f64]); -} - -/// Defines big-endian serialization. -/// -/// Note that this type has no value constructor. It is used purely at the -/// type level. -/// -/// # Examples -/// -/// Write and read `u32` numbers in big endian order: -/// -/// ```rust -/// use byteorder::{ByteOrder, BigEndian}; -/// -/// let mut buf = [0; 4]; -/// BigEndian::write_u32(&mut buf, 1_000_000); -/// assert_eq!(1_000_000, BigEndian::read_u32(&buf)); -/// ``` -#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] -pub enum BigEndian {} - -impl Default for BigEndian { - fn default() -> BigEndian { - panic!("BigEndian default") - } -} - -/// A type alias for [`BigEndian`]. -/// -/// [`BigEndian`]: enum.BigEndian.html -pub type BE = BigEndian; - -/// Defines little-endian serialization. -/// -/// Note that this type has no value constructor. It is used purely at the -/// type level. -/// -/// # Examples -/// -/// Write and read `u32` numbers in little endian order: -/// -/// ```rust -/// use byteorder::{ByteOrder, LittleEndian}; -/// -/// let mut buf = [0; 4]; -/// LittleEndian::write_u32(&mut buf, 1_000_000); -/// assert_eq!(1_000_000, LittleEndian::read_u32(&buf)); -/// ``` -#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] -pub enum LittleEndian {} - -impl Default for LittleEndian { - fn default() -> LittleEndian { - panic!("LittleEndian default") - } -} - -/// A type alias for [`LittleEndian`]. -/// -/// [`LittleEndian`]: enum.LittleEndian.html -pub type LE = LittleEndian; - -/// Defines network byte order serialization. -/// -/// Network byte order is defined by [RFC 1700][1] to be big-endian, and is -/// referred to in several protocol specifications. This type is an alias of -/// [`BigEndian`]. -/// -/// [1]: https://tools.ietf.org/html/rfc1700 -/// -/// Note that this type has no value constructor. It is used purely at the -/// type level. -/// -/// # Examples -/// -/// Write and read `i16` numbers in big endian order: -/// -/// ```rust -/// use byteorder::{ByteOrder, NetworkEndian, BigEndian}; -/// -/// let mut buf = [0; 2]; -/// BigEndian::write_i16(&mut buf, -5_000); -/// assert_eq!(-5_000, NetworkEndian::read_i16(&buf)); -/// ``` -/// -/// [`BigEndian`]: enum.BigEndian.html -pub type NetworkEndian = BigEndian; - -/// Defines system native-endian serialization. -/// -/// Note that this type has no value constructor. It is used purely at the -/// type level. -/// -/// On this platform, this is an alias for [`LittleEndian`]. -/// -/// [`LittleEndian`]: enum.LittleEndian.html -#[cfg(target_endian = "little")] -pub type NativeEndian = LittleEndian; - -/// Defines system native-endian serialization. -/// -/// Note that this type has no value constructor. It is used purely at the -/// type level. -/// -/// On this platform, this is an alias for [`BigEndian`]. -/// -/// [`BigEndian`]: enum.BigEndian.html -#[cfg(target_endian = "big")] -pub type NativeEndian = BigEndian; - -/// Copies $size bytes from a number $n to a &mut [u8] $dst. $ty represents the -/// numeric type of $n and $which must be either to_be or to_le, depending on -/// which endianness one wants to use when writing to $dst. -/// -/// This macro is only safe to call when $ty is a numeric type and $size == -/// size_of::<$ty>() and where $dst is a &mut [u8]. -macro_rules! unsafe_write_num_bytes { - ($ty:ty, $size:expr, $n:expr, $dst:expr, $which:ident) => {{ - assert!($size <= $dst.len()); - unsafe { - // N.B. https://github.com/rust-lang/rust/issues/22776 - let bytes = *(&$n.$which() as *const _ as *const [u8; $size]); - copy_nonoverlapping((&bytes).as_ptr(), $dst.as_mut_ptr(), $size); - } - }}; -} - -/// Copies a &[u8] $src into a &mut [<numeric>] $dst for the endianness given -/// by $which (must be either to_be or to_le). -/// -/// This macro is only safe to call when $src and $dst are &[u8] and &mut [u8], -/// respectively. The macro will panic if $src.len() != $size * $dst.len(), -/// where $size represents the size of the integers encoded in $src. -macro_rules! unsafe_read_slice { - ($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(); - } - }}; -} - -/// Copies a &[$ty] $src into a &mut [u8] $dst, where $ty must be a numeric -/// type. This panics if size_of::<$ty>() * $src.len() != $dst.len(). -/// -/// This macro is only safe to call when $src is a slice of numeric types and -/// $dst is a &mut [u8] and where $ty represents the type of the integers in -/// $src. -macro_rules! unsafe_write_slice_native { - ($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 - ); - - // Test that all of the byte conversion functions panic when given a - // buffer that is too small. - // - // These tests are critical to ensure safety, otherwise we might end up - // with a buffer overflow. - 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); - - // Test that reading/writing slices enforces the correct lengths. - 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 - ); - - // Test slice serialization/deserialization. - 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); -} |