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author | wolfbeast <mcwerewolf@gmail.com> | 2018-03-13 13:38:57 +0100 |
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committer | wolfbeast <mcwerewolf@gmail.com> | 2018-03-13 13:38:57 +0100 |
commit | 38d185280e2cad4ed6673bb38f707f54dad4ded7 (patch) | |
tree | bbbb7df9a9f18c5fd3caf406d7f5bc9e13168d1f /third_party/rust/byteorder/src/lib.rs | |
parent | 7c68c5a22cfe8f83322836a1a6a76a8ae0415ec1 (diff) | |
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Remove Rust from the tree.
Part 4 for #58
Diffstat (limited to 'third_party/rust/byteorder/src/lib.rs')
-rw-r--r-- | third_party/rust/byteorder/src/lib.rs | 802 |
1 files changed, 0 insertions, 802 deletions
diff --git a/third_party/rust/byteorder/src/lib.rs b/third_party/rust/byteorder/src/lib.rs deleted file mode 100644 index a25bab6e0..000000000 --- a/third_party/rust/byteorder/src/lib.rs +++ /dev/null @@ -1,802 +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`. - -# 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]); -``` -*/ - -#![crate_name = "byteorder"] -#![doc(html_root_url = "http://burntsushi.net/rustdoc/byteorder")] - -#![cfg_attr(not(feature = "std"), no_std)] - -#![deny(missing_docs)] - -#[cfg(feature = "std")] -extern crate core; - -use core::mem::transmute; -use core::ptr::copy_nonoverlapping; - -#[cfg(feature = "std")] -pub use new::{ReadBytesExt, WriteBytesExt}; - -#[cfg(feature = "std")] -mod new; - -#[inline] -fn extend_sign(val: u64, nbytes: usize) -> i64 { - let shift = (8 - nbytes) * 8; - (val << shift) as i64 >> shift -} - -#[inline] -fn unextend_sign(val: i64, nbytes: usize) -> u64 { - let shift = (8 - nbytes) * 8; - (val << shift) as u64 >> 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 - } -} - -/// 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`. -/// -/// # 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, -50_000); -/// assert_eq!(-50_000, BigEndian::read_i16(&buf)); -/// ``` -pub trait ByteOrder { - /// Reads an unsigned 16 bit integer from `buf`. - /// - /// Panics when `buf.len() < 2`. - fn read_u16(buf: &[u8]) -> u16; - - /// Reads an unsigned 32 bit integer from `buf`. - /// - /// Panics when `buf.len() < 4`. - fn read_u32(buf: &[u8]) -> u32; - - /// Reads an unsigned 64 bit integer from `buf`. - /// - /// Panics when `buf.len() < 8`. - fn read_u64(buf: &[u8]) -> u64; - - /// Reads an unsigned n-bytes integer from `buf`. - /// - /// Panics when `nbytes < 1` or `nbytes > 8` or - /// `buf.len() < nbytes` - fn read_uint(buf: &[u8], nbytes: usize) -> u64; - - /// Writes an unsigned 16 bit integer `n` to `buf`. - /// - /// Panics when `buf.len() < 2`. - fn write_u16(buf: &mut [u8], n: u16); - - /// Writes an unsigned 32 bit integer `n` to `buf`. - /// - /// Panics when `buf.len() < 4`. - fn write_u32(buf: &mut [u8], n: u32); - - /// Writes an unsigned 64 bit integer `n` to `buf`. - /// - /// Panics when `buf.len() < 8`. - fn write_u64(buf: &mut [u8], n: u64); - - /// Writes an unsigned integer `n` to `buf` using only `nbytes`. - /// - /// If `n` is not representable in `nbytes`, or if `nbytes` is `> 8`, then - /// this method panics. - fn write_uint(buf: &mut [u8], n: u64, nbytes: usize); - - /// Reads a signed 16 bit integer from `buf`. - /// - /// Panics when `buf.len() < 2`. - #[inline] - fn read_i16(buf: &[u8]) -> i16 { - Self::read_u16(buf) as i16 - } - - /// Reads a signed 32 bit integer from `buf`. - /// - /// Panics when `buf.len() < 4`. - #[inline] - fn read_i32(buf: &[u8]) -> i32 { - Self::read_u32(buf) as i32 - } - - /// Reads a signed 64 bit integer from `buf`. - /// - /// Panics when `buf.len() < 8`. - #[inline] - fn read_i64(buf: &[u8]) -> i64 { - Self::read_u64(buf) as i64 - } - - /// Reads a signed n-bytes integer from `buf`. - /// - /// Panics when `nbytes < 1` or `nbytes > 8` or - /// `buf.len() < nbytes` - #[inline] - fn read_int(buf: &[u8], nbytes: usize) -> i64 { - extend_sign(Self::read_uint(buf, nbytes), nbytes) - } - - /// Reads a IEEE754 single-precision (4 bytes) floating point number. - /// - /// Panics when `buf.len() < 4`. - #[inline] - fn read_f32(buf: &[u8]) -> f32 { - unsafe { transmute(Self::read_u32(buf)) } - } - - /// Reads a IEEE754 double-precision (8 bytes) floating point number. - /// - /// Panics when `buf.len() < 8`. - #[inline] - fn read_f64(buf: &[u8]) -> f64 { - unsafe { transmute(Self::read_u64(buf)) } - } - - /// Writes a signed 16 bit integer `n` to `buf`. - /// - /// Panics when `buf.len() < 2`. - #[inline] - fn write_i16(buf: &mut [u8], n: i16) { - Self::write_u16(buf, n as u16) - } - - /// Writes a signed 32 bit integer `n` to `buf`. - /// - /// Panics when `buf.len() < 4`. - #[inline] - fn write_i32(buf: &mut [u8], n: i32) { - Self::write_u32(buf, n as u32) - } - - /// Writes a signed 64 bit integer `n` to `buf`. - /// - /// Panics when `buf.len() < 8`. - #[inline] - fn write_i64(buf: &mut [u8], n: i64) { - Self::write_u64(buf, n as u64) - } - - /// Writes a signed integer `n` to `buf` using only `nbytes`. - /// - /// If `n` is not representable in `nbytes`, or if `nbytes` is `> 8`, then - /// this method panics. - #[inline] - fn write_int(buf: &mut [u8], n: i64, nbytes: usize) { - Self::write_uint(buf, unextend_sign(n, nbytes), nbytes) - } - - /// Writes a IEEE754 single-precision (4 bytes) floating point number. - /// - /// Panics when `buf.len() < 4`. - #[inline] - fn write_f32(buf: &mut [u8], n: f32) { - Self::write_u32(buf, unsafe { transmute(n) }) - } - - /// Writes a IEEE754 double-precision (8 bytes) floating point number. - /// - /// Panics when `buf.len() < 8`. - #[inline] - fn write_f64(buf: &mut [u8], n: f64) { - Self::write_u64(buf, unsafe { transmute(n) }) - } -} - -/// Defines big-endian serialization. -/// -/// Note that this type has no value constructor. It is used purely at the -/// type level. -#[allow(missing_copy_implementations)] pub enum BigEndian {} - -/// Defines little-endian serialization. -/// -/// Note that this type has no value constructor. It is used purely at the -/// type level. -#[allow(missing_copy_implementations)] pub enum 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. -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. -#[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. -#[cfg(target_endian = "big")] -pub type NativeEndian = BigEndian; - -macro_rules! read_num_bytes { - ($ty:ty, $size:expr, $src:expr, $which:ident) => ({ - assert!($size == ::core::mem::size_of::<$ty>()); - assert!($size <= $src.len()); - let mut data: $ty = 0; - unsafe { - copy_nonoverlapping( - $src.as_ptr(), - &mut data as *mut $ty as *mut u8, - $size); - } - data.$which() - }); -} - -macro_rules! 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 = transmute::<_, [u8; $size]>($n.$which()); - copy_nonoverlapping((&bytes).as_ptr(), $dst.as_mut_ptr(), $size); - } - }); -} - -impl ByteOrder for BigEndian { - #[inline] - fn read_u16(buf: &[u8]) -> u16 { - read_num_bytes!(u16, 2, buf, to_be) - } - - #[inline] - fn read_u32(buf: &[u8]) -> u32 { - read_num_bytes!(u32, 4, buf, to_be) - } - - #[inline] - fn read_u64(buf: &[u8]) -> u64 { - read_num_bytes!(u64, 8, buf, to_be) - } - - #[inline] - fn read_uint(buf: &[u8], nbytes: usize) -> u64 { - assert!(1 <= nbytes && nbytes <= 8 && nbytes <= buf.len()); - let mut out = [0u8; 8]; - let ptr_out = out.as_mut_ptr(); - unsafe { - copy_nonoverlapping( - buf.as_ptr(), ptr_out.offset((8 - nbytes) as isize), nbytes); - (*(ptr_out as *const u64)).to_be() - } - } - - #[inline] - fn write_u16(buf: &mut [u8], n: u16) { - write_num_bytes!(u16, 2, n, buf, to_be); - } - - #[inline] - fn write_u32(buf: &mut [u8], n: u32) { - write_num_bytes!(u32, 4, n, buf, to_be); - } - - #[inline] - fn write_u64(buf: &mut [u8], n: u64) { - write_num_bytes!(u64, 8, 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: [u8; 8] = transmute(n.to_be()); - copy_nonoverlapping( - bytes.as_ptr().offset((8 - nbytes) as isize), - buf.as_mut_ptr(), - nbytes); - } - } -} - -impl ByteOrder for LittleEndian { - #[inline] - fn read_u16(buf: &[u8]) -> u16 { - read_num_bytes!(u16, 2, buf, to_le) - } - - #[inline] - fn read_u32(buf: &[u8]) -> u32 { - read_num_bytes!(u32, 4, buf, to_le) - } - - #[inline] - fn read_u64(buf: &[u8]) -> u64 { - read_num_bytes!(u64, 8, buf, to_le) - } - - #[inline] - fn read_uint(buf: &[u8], nbytes: usize) -> u64 { - assert!(1 <= nbytes && nbytes <= 8 && nbytes <= buf.len()); - let mut out = [0u8; 8]; - let ptr_out = out.as_mut_ptr(); - unsafe { - copy_nonoverlapping(buf.as_ptr(), ptr_out, nbytes); - (*(ptr_out as *const u64)).to_le() - } - } - - #[inline] - fn write_u16(buf: &mut [u8], n: u16) { - write_num_bytes!(u16, 2, n, buf, to_le); - } - - #[inline] - fn write_u32(buf: &mut [u8], n: u32) { - write_num_bytes!(u32, 4, n, buf, to_le); - } - - #[inline] - fn write_u64(buf: &mut [u8], n: u64) { - write_num_bytes!(u64, 8, 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: [u8; 8] = transmute(n.to_le()); - copy_nonoverlapping(bytes.as_ptr(), buf.as_mut_ptr(), nbytes); - } - } -} - -#[cfg(test)] -mod test { - extern crate quickcheck; - extern crate rand; - - use test::rand::thread_rng; - use test::quickcheck::{QuickCheck, StdGen, Testable}; - - const U64_MAX: u64 = ::std::u64::MAX; - const I64_MAX: u64 = ::std::i64::MAX as u64; - - 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:ident, $max:expr, - $bytes:expr, $read:ident, $write:ident) => ( - mod $name { - use {BigEndian, ByteOrder, NativeEndian, LittleEndian}; - use super::qc_sized; - - #[test] - fn big_endian() { - let max = ($max - 1) >> (8 * (8 - $bytes)); - fn prop(n: $ty_int) -> bool { - let mut buf = [0; 8]; - BigEndian::$write(&mut buf, n, $bytes); - n == BigEndian::$read(&mut buf[..$bytes], $bytes) - } - qc_sized(prop as fn($ty_int) -> bool, max); - } - - #[test] - fn little_endian() { - let max = ($max - 1) >> (8 * (8 - $bytes)); - fn prop(n: $ty_int) -> bool { - let mut buf = [0; 8]; - LittleEndian::$write(&mut buf, n, $bytes); - n == LittleEndian::$read(&mut buf[..$bytes], $bytes) - } - qc_sized(prop as fn($ty_int) -> bool, max); - } - - #[test] - fn native_endian() { - let max = ($max - 1) >> (8 * (8 - $bytes)); - fn prop(n: $ty_int) -> bool { - let mut buf = [0; 8]; - NativeEndian::$write(&mut buf, n, $bytes); - n == NativeEndian::$read(&mut buf[..$bytes], $bytes) - } - qc_sized(prop as fn($ty_int) -> bool, max); - } - } - ); - ($name:ident, $ty_int:ident, $max:expr, - $read:ident, $write:ident) => ( - mod $name { - use std::mem::size_of; - use {BigEndian, ByteOrder, NativeEndian, LittleEndian}; - use super::qc_sized; - - #[test] - fn big_endian() { - fn prop(n: $ty_int) -> bool { - let bytes = size_of::<$ty_int>(); - let mut buf = [0; 8]; - BigEndian::$write(&mut buf[8 - bytes..], n); - n == BigEndian::$read(&mut buf[8 - 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; 8]; - LittleEndian::$write(&mut buf[..bytes], n); - n == LittleEndian::$read(&mut 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; 8]; - NativeEndian::$write(&mut buf[..bytes], n); - n == NativeEndian::$read(&mut buf[..bytes]) - } - qc_sized(prop as fn($ty_int) -> bool, $max - 1); - } - } - ); - } - - qc_byte_order!(prop_u16, u16, ::std::u16::MAX as u64, read_u16, write_u16); - qc_byte_order!(prop_i16, i16, ::std::i16::MAX as u64, read_i16, write_i16); - qc_byte_order!(prop_u32, u32, ::std::u32::MAX as u64, read_u32, write_u32); - qc_byte_order!(prop_i32, i32, ::std::i32::MAX as u64, read_i32, write_i32); - qc_byte_order!(prop_u64, u64, ::std::u64::MAX as u64, read_u64, write_u64); - qc_byte_order!(prop_i64, i64, ::std::i64::MAX as u64, read_i64, write_i64); - qc_byte_order!(prop_f32, f32, ::std::u64::MAX as u64, read_f32, write_f32); - qc_byte_order!(prop_f64, f64, ::std::i64::MAX as u64, read_f64, write_f64); - - qc_byte_order!(prop_uint_1, u64, super::U64_MAX, 1, read_uint, write_uint); - qc_byte_order!(prop_uint_2, u64, super::U64_MAX, 2, read_uint, write_uint); - qc_byte_order!(prop_uint_3, u64, super::U64_MAX, 3, read_uint, write_uint); - qc_byte_order!(prop_uint_4, u64, super::U64_MAX, 4, read_uint, write_uint); - qc_byte_order!(prop_uint_5, u64, super::U64_MAX, 5, read_uint, write_uint); - qc_byte_order!(prop_uint_6, u64, super::U64_MAX, 6, read_uint, write_uint); - qc_byte_order!(prop_uint_7, u64, super::U64_MAX, 7, read_uint, write_uint); - qc_byte_order!(prop_uint_8, u64, super::U64_MAX, 8, read_uint, write_uint); - - qc_byte_order!(prop_int_1, i64, super::I64_MAX, 1, read_int, write_int); - qc_byte_order!(prop_int_2, i64, super::I64_MAX, 2, read_int, write_int); - qc_byte_order!(prop_int_3, i64, super::I64_MAX, 3, read_int, write_int); - qc_byte_order!(prop_int_4, i64, super::I64_MAX, 4, read_int, write_int); - qc_byte_order!(prop_int_5, i64, super::I64_MAX, 5, read_int, write_int); - qc_byte_order!(prop_int_6, i64, super::I64_MAX, 6, read_int, write_int); - qc_byte_order!(prop_int_7, i64, super::I64_MAX, 7, read_int, write_int); - qc_byte_order!(prop_int_8, i64, super::I64_MAX, 8, read_int, write_int); - - macro_rules! qc_bytes_ext { - ($name:ident, $ty_int:ident, $max:expr, - $bytes:expr, $read:ident, $write:ident) => ( - mod $name { - use std::io::Cursor; - use { - ReadBytesExt, WriteBytesExt, - BigEndian, NativeEndian, LittleEndian, - }; - use super::qc_sized; - - #[test] - fn big_endian() { - let max = ($max - 1) >> (8 * (8 - $bytes)); - fn prop(n: $ty_int) -> bool { - let mut wtr = vec![]; - wtr.$write::<BigEndian>(n).unwrap(); - let mut rdr = Vec::new(); - rdr.extend(wtr[8 - $bytes..].iter().map(|&x|x)); - let mut rdr = Cursor::new(rdr); - n == rdr.$read::<BigEndian>($bytes).unwrap() - } - qc_sized(prop as fn($ty_int) -> bool, max); - } - - #[test] - fn little_endian() { - let max = ($max - 1) >> (8 * (8 - $bytes)); - fn prop(n: $ty_int) -> bool { - let mut wtr = vec![]; - wtr.$write::<LittleEndian>(n).unwrap(); - let mut rdr = Cursor::new(wtr); - n == rdr.$read::<LittleEndian>($bytes).unwrap() - } - qc_sized(prop as fn($ty_int) -> bool, max); - } - - #[test] - fn native_endian() { - let max = ($max - 1) >> (8 * (8 - $bytes)); - fn prop(n: $ty_int) -> bool { - let mut wtr = vec![]; - wtr.$write::<NativeEndian>(n).unwrap(); - let mut rdr = Cursor::new(wtr); - n == rdr.$read::<NativeEndian>($bytes).unwrap() - } - qc_sized(prop as fn($ty_int) -> bool, max); - } - } - ); - ($name:ident, $ty_int:ident, $max:expr, $read:ident, $write:ident) => ( - mod $name { - use std::io::Cursor; - use { - ReadBytesExt, WriteBytesExt, - BigEndian, NativeEndian, LittleEndian, - }; - use super::qc_sized; - - #[test] - fn big_endian() { - fn prop(n: $ty_int) -> bool { - let mut wtr = vec![]; - wtr.$write::<BigEndian>(n).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).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).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_uint_1, u64, super::U64_MAX, 1, read_uint, write_u64); - qc_bytes_ext!(prop_ext_uint_2, u64, super::U64_MAX, 2, read_uint, write_u64); - qc_bytes_ext!(prop_ext_uint_3, u64, super::U64_MAX, 3, read_uint, write_u64); - qc_bytes_ext!(prop_ext_uint_4, u64, super::U64_MAX, 4, read_uint, write_u64); - qc_bytes_ext!(prop_ext_uint_5, u64, super::U64_MAX, 5, read_uint, write_u64); - qc_bytes_ext!(prop_ext_uint_6, u64, super::U64_MAX, 6, read_uint, write_u64); - qc_bytes_ext!(prop_ext_uint_7, u64, super::U64_MAX, 7, read_uint, write_u64); - qc_bytes_ext!(prop_ext_uint_8, u64, super::U64_MAX, 8, read_uint, write_u64); - - qc_bytes_ext!(prop_ext_int_1, i64, super::I64_MAX, 1, read_int, write_i64); - qc_bytes_ext!(prop_ext_int_2, i64, super::I64_MAX, 2, read_int, write_i64); - qc_bytes_ext!(prop_ext_int_3, i64, super::I64_MAX, 3, read_int, write_i64); - qc_bytes_ext!(prop_ext_int_4, i64, super::I64_MAX, 4, read_int, write_i64); - qc_bytes_ext!(prop_ext_int_5, i64, super::I64_MAX, 5, read_int, write_i64); - qc_bytes_ext!(prop_ext_int_6, i64, super::I64_MAX, 6, read_int, write_i64); - qc_bytes_ext!(prop_ext_int_7, i64, super::I64_MAX, 7, read_int, write_i64); - qc_bytes_ext!(prop_ext_int_8, i64, super::I64_MAX, 8, read_int, write_i64); - - // 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 {BigEndian, ByteOrder, NativeEndian, LittleEndian}; - - #[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 {BigEndian, ByteOrder, NativeEndian, LittleEndian}; - - #[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_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_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); - - #[test] - fn uint_bigger_buffer() { - use {ByteOrder, LittleEndian}; - let n = LittleEndian::read_uint(&[1, 2, 3, 4, 5, 6, 7, 8], 5); - assert_eq!(n, 0x0504030201); - } -} |