Bump version to v0.4.7

The new implementation tries to get the data directly from bytes() (this is
possible most of the time) and if there is not enough data in bytes() use the
previous code: copy the needed bytes in a temporary buffer before returning
the data

Here the bench results:
                               Before                After           x-faster
get_f32::cursor             64 ns/iter (+/- 0)    20 ns/iter (+/- 0)    3.2
get_f32::tbuf_1             77 ns/iter (+/- 1)    34 ns/iter (+/- 0)    2.3
get_f32::tbuf_1_costly      87 ns/iter (+/- 0)    62 ns/iter (+/- 0)    1.4
get_f32::tbuf_2            151 ns/iter (+/- 18)  160 ns/iter (+/- 1)    0.9
get_f32::tbuf_2_costly     180 ns/iter (+/- 2)   187 ns/iter (+/- 2)    1.0

get_f64::cursor             67 ns/iter (+/- 0)    21 ns/iter (+/- 0)    3.2
get_f64::tbuf_1             80 ns/iter (+/- 0)    35 ns/iter (+/- 0)    2.3
get_f64::tbuf_1_costly      82 ns/iter (+/- 3)    60 ns/iter (+/- 0)    1.4
get_f64::tbuf_2            154 ns/iter (+/- 1)   164 ns/iter (+/- 0)    0.9
get_f64::tbuf_2_costly     170 ns/iter (+/- 2)   187 ns/iter (+/- 1)    0.9

get_u16::cursor             66 ns/iter (+/- 0)    20 ns/iter (+/- 0)    3.3
get_u16::tbuf_1             77 ns/iter (+/- 0)    35 ns/iter (+/- 0)    2.2
get_u16::tbuf_1_costly      85 ns/iter (+/- 2)    62 ns/iter (+/- 0)    1.4
get_u16::tbuf_2            147 ns/iter (+/- 0)   154 ns/iter (+/- 0)    1.0
get_u16::tbuf_2_costly     160 ns/iter (+/- 1)   177 ns/iter (+/- 0)    0.9

get_u32::cursor             64 ns/iter (+/- 0)    20 ns/iter (+/- 0)    3.2
get_u32::tbuf_1             77 ns/iter (+/- 0)    35 ns/iter (+/- 0)    2.2
get_u32::tbuf_1_costly      91 ns/iter (+/- 2)    63 ns/iter (+/- 0)    1.4
get_u32::tbuf_2            151 ns/iter (+/- 40)  157 ns/iter (+/- 0)    1.0
get_u32::tbuf_2_costly     162 ns/iter (+/- 0)   180 ns/iter (+/- 0)    0.9

get_u64::cursor             67 ns/iter (+/- 0)    20 ns/iter (+/- 0)    3.4
get_u64::tbuf_1             78 ns/iter (+/- 0)    35 ns/iter (+/- 1)    2.2
get_u64::tbuf_1_costly      87 ns/iter (+/- 1)    59 ns/iter (+/- 1)    1.5
get_u64::tbuf_2            154 ns/iter (+/- 0)   160 ns/iter (+/- 0)    1.0
get_u64::tbuf_2_costly     168 ns/iter (+/- 0)   184 ns/iter (+/- 0)    0.9

get_u8::cursor              64 ns/iter (+/- 0)    19 ns/iter (+/- 0)    3.4
get_u8::tbuf_1              77 ns/iter (+/- 0)    35 ns/iter (+/- 0)    2.2
get_u8::tbuf_1_costly       68 ns/iter (+/- 0)    51 ns/iter (+/- 0)    1.3
get_u8::tbuf_2              85 ns/iter (+/- 0)    43 ns/iter (+/- 0)    2.0
get_u8::tbuf_2_costly       75 ns/iter (+/- 0)    61 ns/iter (+/- 0)    1.2
get_u8::option              77 ns/iter (+/- 0)    59 ns/iter (+/- 0)    1.3

Improvement on the basic std::Cursor implementation are clearly visible.

Other implementations are specific to the bench tests and just map a static
slice. Different variant are:
 - tbuf_1: only one call of 'bytes()' is needed.
 - tbuf_2: two calls of 'bytes()' is needed to read more than one byte.
 - _costly version are implemented with #[inline(never)] on 'bytes()',
   'remaining()' and 'advance()'.

The cases that are slower (slightly) correspond to implementations that are not
really realistic: more than one byte is never possible in one time

.travis.yml

@@ -36,6 +36,13 @@ matrix:
     # Serde implementation
     - env: EXTRA_ARGS="--features serde"
 
+    # WASM support
+    - rust: beta
+      script:
+        - rustup target add wasm32-unknown-unknown
+        - cargo build --target=wasm32-unknown-unknown
+
+
 before_install: set -e
 
 install:

CHANGELOG.md

@@ -1,3 +1,24 @@
+# 0.4.7 (April 27, 2018)
+
+* Make `Buf` and `BufMut` usable as trait objects (#186).
+* impl BorrowMut for BytesMut (#185).
+* Improve accessor performance (#195).
+
+# 0.4.6 (Janary 8, 2018)
+
+* Implement FromIterator for Bytes/BytesMut (#148).
+* Add `advance` fn to Bytes/BytesMut (#166).
+* Add `unsplit` fn to `BytesMut` (#162, #173).
+* Improvements to Bytes split fns (#92).
+
+# 0.4.5 (August 12, 2017)
+
+* Fix range bug in `Take::bytes`
+* Misc performance improvements
+* Add extra `PartialEq` implementations.
+* Add `Bytes::with_capacity`
+* Implement `AsMut[u8]` for `BytesMut`
+
 # 0.4.4 (May 26, 2017)
 
 * Add serde support behind feature flag

Cargo.toml

@@ -1,8 +1,8 @@
 [package]
 
 name          = "bytes"
-version       = "0.4.4"
-license       = "MIT"
+version       = "0.4.7" # don't forget to update html_root_url
+license       = "MIT/Apache-2.0"
 authors       = ["Carl Lerche <[email protected]>"]
 description   = "Types and traits for working with bytes"
 documentation = "https://carllerche.github.io/bytes/bytes"

benches/bytes.rs

@@ -29,6 +29,18 @@ fn alloc_big(b: &mut Bencher) {
     })
 }
 
+#[bench]
+fn split_off_and_drop(b: &mut Bencher) {
+    b.iter(|| {
+        for _ in 0..1024 {
+            let v = vec![10; 200];
+            let mut b = Bytes::from(v);
+            test::black_box(b.split_off(100));
+            test::black_box(b);
+        }
+    })
+}
+
 #[bench]
 fn deref_unique(b: &mut Bencher) {
     let mut buf = BytesMut::with_capacity(4096);
@@ -128,21 +140,78 @@ fn drain_write_drain(b: &mut Bencher) {
 }
 
 #[bench]
-fn slice_empty(b: &mut Bencher) {
+fn fmt_write(b: &mut Bencher) {
+    use std::fmt::Write;
+    let mut buf = BytesMut::with_capacity(128);
+    let s = "foo bar baz quux lorem ipsum dolor et";
+
+    b.bytes = s.len() as u64;
     b.iter(|| {
-        // Use empty vec to avoid measure of allocation/deallocation
-        let bytes = Bytes::from(Vec::new());
-        (bytes.slice(0, 0), bytes)
+        let _ = write!(buf, "{}", s);
+        test::black_box(&buf);
+        unsafe { buf.set_len(0); }
     })
 }
 
 #[bench]
-fn slice_not_empty(b: &mut Bencher) {
+fn from_long_slice(b: &mut Bencher) {
+    let data = [0u8; 128];
+    b.bytes = data.len() as u64;
     b.iter(|| {
-        let b = Bytes::from(b"aabbccddeeffgghh".to_vec());
-        for _ in 0..1024 {
-            test::black_box(b.slice(3, 5));
-            test::black_box(&b);
+        let buf = BytesMut::from(&data[..]);
+        test::black_box(buf);
+    })
+}
+
+#[bench]
+fn slice_empty(b: &mut Bencher) {
+    b.iter(|| {
+        let b = Bytes::from(vec![17; 1024]).clone();
+        for i in 0..1000 {
+            test::black_box(b.slice(i % 100, i % 100));
+        }
+    })
+}
+
+#[bench]
+fn slice_short_from_arc(b: &mut Bencher) {
+    b.iter(|| {
+        // `clone` is to convert to ARC
+        let b = Bytes::from(vec![17; 1024]).clone();
+        for i in 0..1000 {
+            test::black_box(b.slice(1, 2 + i % 10));
+        }
+    })
+}
+
+// Keep in sync with bytes.rs
+#[cfg(target_pointer_width = "64")]
+const INLINE_CAP: usize = 4 * 8 - 1;
+#[cfg(target_pointer_width = "32")]
+const INLINE_CAP: usize = 4 * 4 - 1;
+
+#[bench]
+fn slice_avg_le_inline_from_arc(b: &mut Bencher) {
+    b.iter(|| {
+        // `clone` is to convert to ARC
+        let b = Bytes::from(vec![17; 1024]).clone();
+        for i in 0..1000 {
+            // [1, INLINE_CAP]
+            let len = 1 + i % (INLINE_CAP - 1);
+            test::black_box(b.slice(i % 10, i % 10 + len));
+        }
+    })
+}
+
+#[bench]
+fn slice_large_le_inline_from_arc(b: &mut Bencher) {
+    b.iter(|| {
+        // `clone` is to convert to ARC
+        let b = Bytes::from(vec![17; 1024]).clone();
+        for i in 0..1000 {
+            // [INLINE_CAP - 10, INLINE_CAP]
+            let len = INLINE_CAP - 9 + i % 10;
+            test::black_box(b.slice(i % 10, i % 10 + len));
         }
     })
 }

src/buf/buf.rs

@@ -1,9 +1,41 @@
 use super::{IntoBuf, Take, Reader, Iter, FromBuf, Chain};
-use byteorder::ByteOrder;
+use byteorder::{BigEndian, ByteOrder, LittleEndian};
 use iovec::IoVec;
 
 use std::{cmp, io, ptr};
 
+macro_rules! buf_get_impl {
+    ($this:ident, $size:expr, $conv:path) => ({
+         // try to convert directly from the bytes
+        let ret = {
+            // this Option<ret> trick is to avoid keeping a borrow on self
+            // when advance() is called (mut borrow) and to call bytes() only once
+            if let Some(src) = $this.bytes().get(..($size)) {
+                Some($conv(src))
+            } else {
+                None
+            }
+        };
+        if let Some(ret) = ret {
+             // if the direct convertion was possible, advance and return
+            $this.advance($size);
+            return ret;
+        } else {
+            // if not we copy the bytes in a temp buffer then convert
+            let mut buf = [0; ($size)];
+            $this.copy_to_slice(&mut buf); // (do the advance)
+            return $conv(&buf);
+        }
+    });
+    ($this:ident, $buf_size:expr, $conv:path, $len_to_read:expr) => ({
+        // The same trick as above does not improve the best case speed.
+        // It seems to be linked to the way the method is optimised by the compiler
+        let mut buf = [0; ($buf_size)];
+        $this.copy_to_slice(&mut buf[..($len_to_read)]);
+        return $conv(&buf[..($len_to_read)], $len_to_read);
+    });
+}
+
 /// Read bytes from a buffer.
 ///
 /// A buffer stores bytes in memory such that read operations are infallible.
@@ -243,9 +275,10 @@ pub trait Buf {
     ///
     /// This function panics if there is no more remaining data in `self`.
     fn get_u8(&mut self) -> u8 {
-        let mut buf = [0; 1];
-        self.copy_to_slice(&mut buf);
-        buf[0]
+        assert!(self.remaining() >= 1);
+        let ret = self.bytes()[0];
+        self.advance(1);
+        ret
     }
 
     /// Gets a signed 8 bit integer from `self`.
@@ -266,243 +299,516 @@ pub trait Buf {
     ///
     /// This function panics if there is no more remaining data in `self`.
     fn get_i8(&mut self) -> i8 {
-        let mut buf = [0; 1];
-        self.copy_to_slice(&mut buf);
-        buf[0] as i8
+        assert!(self.remaining() >= 1);
+        let ret = self.bytes()[0] as i8;
+        self.advance(1);
+        ret
     }
 
-    /// Gets an unsigned 16 bit integer from `self` in the specified byte order.
-    ///
-    /// The current position is advanced by 2.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use bytes::{Buf, BigEndian};
-    /// use std::io::Cursor;
-    ///
-    /// let mut buf = Cursor::new(b"\x08\x09 hello");
-    /// assert_eq!(0x0809, buf.get_u16::<BigEndian>());
-    /// ```
-    ///
-    /// # Panics
-    ///
-    /// This function panics if there is not enough remaining data in `self`.
-    fn get_u16<T: ByteOrder>(&mut self) -> u16 {
+    #[doc(hidden)]
+    #[deprecated(note="use get_u16_be or get_u16_le")]
+    fn get_u16<T: ByteOrder>(&mut self) -> u16 where Self: Sized {
         let mut buf = [0; 2];
         self.copy_to_slice(&mut buf);
         T::read_u16(&buf)
     }
 
-    /// Gets a signed 16 bit integer from `self` in the specified byte order.
+    /// Gets an unsigned 16 bit integer from `self` in big-endian byte order.
     ///
     /// The current position is advanced by 2.
     ///
     /// # Examples
     ///
     /// ```
-    /// use bytes::{Buf, BigEndian};
+    /// use bytes::Buf;
     /// use std::io::Cursor;
     ///
     /// let mut buf = Cursor::new(b"\x08\x09 hello");
-    /// assert_eq!(0x0809, buf.get_i16::<BigEndian>());
+    /// assert_eq!(0x0809, buf.get_u16_be());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
-    fn get_i16<T: ByteOrder>(&mut self) -> i16 {
+    fn get_u16_be(&mut self) -> u16 {
+        buf_get_impl!(self, 2, BigEndian::read_u16);
+    }
+
+    /// Gets an unsigned 16 bit integer from `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 2.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x09\x08 hello");
+    /// assert_eq!(0x0809, buf.get_u16_le());
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_u16_le(&mut self) -> u16 {
+        buf_get_impl!(self, 2, LittleEndian::read_u16);
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use get_i16_be or get_i16_le")]
+    fn get_i16<T: ByteOrder>(&mut self) -> i16 where Self: Sized {
         let mut buf = [0; 2];
         self.copy_to_slice(&mut buf);
         T::read_i16(&buf)
     }
 
-    /// Gets an unsigned 32 bit integer from `self` in the specified byte order.
+    /// Gets a signed 16 bit integer from `self` in big-endian byte order.
     ///
-    /// The current position is advanced by 4.
+    /// The current position is advanced by 2.
     ///
     /// # Examples
     ///
     /// ```
-    /// use bytes::{Buf, BigEndian};
+    /// use bytes::Buf;
     /// use std::io::Cursor;
     ///
-    /// let mut buf = Cursor::new(b"\x08\x09\xA0\xA1 hello");
-    /// assert_eq!(0x0809A0A1, buf.get_u32::<BigEndian>());
+    /// let mut buf = Cursor::new(b"\x08\x09 hello");
+    /// assert_eq!(0x0809, buf.get_i16_be());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
-    fn get_u32<T: ByteOrder>(&mut self) -> u32 {
+    fn get_i16_be(&mut self) -> i16 {
+        buf_get_impl!(self, 2, BigEndian::read_i16);
+    }
+
+    /// Gets a signed 16 bit integer from `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 2.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x09\x08 hello");
+    /// assert_eq!(0x0809, buf.get_i16_le());
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_i16_le(&mut self) -> i16 {
+        buf_get_impl!(self, 2, LittleEndian::read_i16);
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use get_u32_be or get_u32_le")]
+    fn get_u32<T: ByteOrder>(&mut self) -> u32 where Self: Sized {
         let mut buf = [0; 4];
         self.copy_to_slice(&mut buf);
         T::read_u32(&buf)
     }
 
-    /// Gets a signed 32 bit integer from `self` in the specified byte order.
+    /// Gets an unsigned 32 bit integer from `self` in the big-endian byte order.
     ///
     /// The current position is advanced by 4.
     ///
     /// # Examples
     ///
     /// ```
-    /// use bytes::{Buf, BigEndian};
+    /// use bytes::Buf;
     /// use std::io::Cursor;
     ///
     /// let mut buf = Cursor::new(b"\x08\x09\xA0\xA1 hello");
-    /// assert_eq!(0x0809A0A1, buf.get_i32::<BigEndian>());
+    /// assert_eq!(0x0809A0A1, buf.get_u32_be());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
-    fn get_i32<T: ByteOrder>(&mut self) -> i32 {
+    fn get_u32_be(&mut self) -> u32 {
+        buf_get_impl!(self, 4, BigEndian::read_u32);
+    }
+
+    /// Gets an unsigned 32 bit integer from `self` in the little-endian byte order.
+    ///
+    /// The current position is advanced by 4.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\xA1\xA0\x09\x08 hello");
+    /// assert_eq!(0x0809A0A1, buf.get_u32_le());
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_u32_le(&mut self) -> u32 {
+        buf_get_impl!(self, 4, LittleEndian::read_u32);
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use get_i32_be or get_i32_le")]
+    fn get_i32<T: ByteOrder>(&mut self) -> i32 where Self: Sized {
         let mut buf = [0; 4];
         self.copy_to_slice(&mut buf);
         T::read_i32(&buf)
     }
 
-    /// Gets an unsigned 64 bit integer from `self` in the specified byte order.
-    ///
-    /// The current position is advanced by 8.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use bytes::{Buf, BigEndian};
-    /// use std::io::Cursor;
-    ///
-    /// let mut buf = Cursor::new(b"\x01\x02\x03\x04\x05\x06\x07\x08 hello");
-    /// assert_eq!(0x0102030405060708, buf.get_u64::<BigEndian>());
-    /// ```
-    ///
-    /// # Panics
-    ///
-    /// This function panics if there is not enough remaining data in `self`.
-    fn get_u64<T: ByteOrder>(&mut self) -> u64 {
-        let mut buf = [0; 8];
-        self.copy_to_slice(&mut buf);
-        T::read_u64(&buf)
-    }
-
-    /// Gets a signed 64 bit integer from `self` in the specified byte order.
-    ///
-    /// The current position is advanced by 8.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use bytes::{Buf, BigEndian};
-    /// use std::io::Cursor;
-    ///
-    /// let mut buf = Cursor::new(b"\x01\x02\x03\x04\x05\x06\x07\x08 hello");
-    /// assert_eq!(0x0102030405060708, buf.get_i64::<BigEndian>());
-    /// ```
-    ///
-    /// # Panics
-    ///
-    /// This function panics if there is not enough remaining data in `self`.
-    fn get_i64<T: ByteOrder>(&mut self) -> i64 {
-        let mut buf = [0; 8];
-        self.copy_to_slice(&mut buf);
-        T::read_i64(&buf)
-    }
-
-    /// Gets an unsigned n-byte integer from `self` in the specified byte order.
-    ///
-    /// The current position is advanced by `nbytes`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use bytes::{Buf, BigEndian};
-    /// use std::io::Cursor;
-    ///
-    /// let mut buf = Cursor::new(b"\x01\x02\x03 hello");
-    /// assert_eq!(0x010203, buf.get_uint::<BigEndian>(3));
-    /// ```
-    ///
-    /// # Panics
-    ///
-    /// This function panics if there is not enough remaining data in `self`.
-    fn get_uint<T: ByteOrder>(&mut self, nbytes: usize) -> u64 {
-        let mut buf = [0; 8];
-        self.copy_to_slice(&mut buf[..nbytes]);
-        T::read_uint(&buf[..nbytes], nbytes)
-    }
-
-    /// Gets a signed n-byte integer from `self` in the specified byte order.
-    ///
-    /// The current position is advanced by `nbytes`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use bytes::{Buf, BigEndian};
-    /// use std::io::Cursor;
-    ///
-    /// let mut buf = Cursor::new(b"\x01\x02\x03 hello");
-    /// assert_eq!(0x010203, buf.get_int::<BigEndian>(3));
-    /// ```
-    ///
-    /// # Panics
-    ///
-    /// This function panics if there is not enough remaining data in `self`.
-    fn get_int<T: ByteOrder>(&mut self, nbytes: usize) -> i64 {
-        let mut buf = [0; 8];
-        self.copy_to_slice(&mut buf[..nbytes]);
-        T::read_int(&buf[..nbytes], nbytes)
-    }
-
-    /// Gets an IEEE754 single-precision (4 bytes) floating point number from
-    /// `self` in the specified byte order.
+    /// Gets a signed 32 bit integer from `self` in big-endian byte order.
     ///
     /// The current position is advanced by 4.
     ///
     /// # Examples
     ///
     /// ```
-    /// use bytes::{Buf, BigEndian};
+    /// use bytes::Buf;
     /// use std::io::Cursor;
     ///
-    /// let mut buf = Cursor::new(b"\x3F\x99\x99\x9A hello");
-    /// assert_eq!(1.2f32, buf.get_f32::<BigEndian>());
+    /// let mut buf = Cursor::new(b"\x08\x09\xA0\xA1 hello");
+    /// assert_eq!(0x0809A0A1, buf.get_i32_be());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
-    fn get_f32<T: ByteOrder>(&mut self) -> f32 {
-        let mut buf = [0; 4];
-        self.copy_to_slice(&mut buf);
-        T::read_f32(&buf)
+    fn get_i32_be(&mut self) -> i32 {
+        buf_get_impl!(self, 4, BigEndian::read_i32);
     }
 
-    /// Gets an IEEE754 double-precision (8 bytes) floating point number from
-    /// `self` in the specified byte order.
+    /// Gets a signed 32 bit integer from `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 4.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\xA1\xA0\x09\x08 hello");
+    /// assert_eq!(0x0809A0A1, buf.get_i32_le());
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_i32_le(&mut self) -> i32 {
+        buf_get_impl!(self, 4, LittleEndian::read_i32);
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use get_u64_be or get_u64_le")]
+    fn get_u64<T: ByteOrder>(&mut self) -> u64 where Self: Sized {
+        let mut buf = [0; 8];
+        self.copy_to_slice(&mut buf);
+        T::read_u64(&buf)
+    }
+
+    /// Gets an unsigned 64 bit integer from `self` in big-endian byte order.
     ///
     /// The current position is advanced by 8.
     ///
     /// # Examples
     ///
     /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x01\x02\x03\x04\x05\x06\x07\x08 hello");
+    /// assert_eq!(0x0102030405060708, buf.get_u64_be());
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_u64_be(&mut self) -> u64 {
+        buf_get_impl!(self, 8, BigEndian::read_u64);
+    }
+
+    /// Gets an unsigned 64 bit integer from `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 8.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x08\x07\x06\x05\x04\x03\x02\x01 hello");
+    /// assert_eq!(0x0102030405060708, buf.get_u64_le());
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_u64_le(&mut self) -> u64 {
+        buf_get_impl!(self, 8, LittleEndian::read_u64);
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use get_i64_be or get_i64_le")]
+    fn get_i64<T: ByteOrder>(&mut self) -> i64 where Self: Sized {
+        let mut buf = [0; 8];
+        self.copy_to_slice(&mut buf);
+        T::read_i64(&buf)
+    }
+
+    /// Gets a signed 64 bit integer from `self` in big-endian byte order.
+    ///
+    /// The current position is advanced by 8.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x01\x02\x03\x04\x05\x06\x07\x08 hello");
+    /// assert_eq!(0x0102030405060708, buf.get_i64_be());
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_i64_be(&mut self) -> i64 {
+        buf_get_impl!(self, 8, BigEndian::read_i64);
+    }
+
+    /// Gets a signed 64 bit integer from `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 8.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x08\x07\x06\x05\x04\x03\x02\x01 hello");
+    /// assert_eq!(0x0102030405060708, buf.get_i64_le());
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_i64_le(&mut self) -> i64 {
+        buf_get_impl!(self, 8, LittleEndian::read_i64);
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use get_uint_be or get_uint_le")]
+    fn get_uint<T: ByteOrder>(&mut self, nbytes: usize) -> u64 where Self: Sized {
+        let mut buf = [0; 8];
+        self.copy_to_slice(&mut buf[..nbytes]);
+        T::read_uint(&buf[..nbytes], nbytes)
+    }
+
+    /// Gets an unsigned n-byte integer from `self` in big-endian byte order.
+    ///
+    /// The current position is advanced by `nbytes`.
+    ///
+    /// # Examples
+    ///
+    /// ```
     /// use bytes::{Buf, BigEndian};
     /// use std::io::Cursor;
     ///
-    /// let mut buf = Cursor::new(b"\x3F\xF3\x33\x33\x33\x33\x33\x33 hello");
-    /// assert_eq!(1.2f64, buf.get_f64::<BigEndian>());
+    /// let mut buf = Cursor::new(b"\x01\x02\x03 hello");
+    /// assert_eq!(0x010203, buf.get_uint_be(3));
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
-    fn get_f64<T: ByteOrder>(&mut self) -> f64 {
+    fn get_uint_be(&mut self, nbytes: usize) -> u64 {
+        buf_get_impl!(self, 8, BigEndian::read_uint, nbytes);
+    }
+
+    /// Gets an unsigned n-byte integer from `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by `nbytes`.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x03\x02\x01 hello");
+    /// assert_eq!(0x010203, buf.get_uint_le(3));
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_uint_le(&mut self, nbytes: usize) -> u64 {
+        buf_get_impl!(self, 8, LittleEndian::read_uint, nbytes);
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use get_int_be or get_int_le")]
+    fn get_int<T: ByteOrder>(&mut self, nbytes: usize) -> i64 where Self: Sized {
+        let mut buf = [0; 8];
+        self.copy_to_slice(&mut buf[..nbytes]);
+        T::read_int(&buf[..nbytes], nbytes)
+    }
+
+    /// Gets a signed n-byte integer from `self` in big-endian byte order.
+    ///
+    /// The current position is advanced by `nbytes`.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x01\x02\x03 hello");
+    /// assert_eq!(0x010203, buf.get_int_be(3));
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_int_be(&mut self, nbytes: usize) -> i64 {
+        buf_get_impl!(self, 8, BigEndian::read_int, nbytes);
+    }
+
+    /// Gets a signed n-byte integer from `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by `nbytes`.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x03\x02\x01 hello");
+    /// assert_eq!(0x010203, buf.get_int_le(3));
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_int_le(&mut self, nbytes: usize) -> i64 {
+        buf_get_impl!(self, 8, LittleEndian::read_int, nbytes);
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use get_f32_be or get_f32_le")]
+    fn get_f32<T: ByteOrder>(&mut self) -> f32 where Self: Sized {
+        let mut buf = [0; 4];
+        self.copy_to_slice(&mut buf);
+        T::read_f32(&buf)
+    }
+
+    /// Gets an IEEE754 single-precision (4 bytes) floating point number from
+    /// `self` in big-endian byte order.
+    ///
+    /// The current position is advanced by 4.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x3F\x99\x99\x9A hello");
+    /// assert_eq!(1.2f32, buf.get_f32_be());
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_f32_be(&mut self) -> f32 {
+        buf_get_impl!(self, 4, BigEndian::read_f32);
+    }
+
+    /// Gets an IEEE754 single-precision (4 bytes) floating point number from
+    /// `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 4.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x9A\x99\x99\x3F hello");
+    /// assert_eq!(1.2f32, buf.get_f32_le());
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_f32_le(&mut self) -> f32 {
+        buf_get_impl!(self, 4, LittleEndian::read_f32);
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use get_f64_be or get_f64_le")]
+    fn get_f64<T: ByteOrder>(&mut self) -> f64 where Self: Sized {
         let mut buf = [0; 8];
         self.copy_to_slice(&mut buf);
         T::read_f64(&buf)
     }
 
+    /// Gets an IEEE754 double-precision (8 bytes) floating point number from
+    /// `self` in big-endian byte order.
+    ///
+    /// The current position is advanced by 8.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x3F\xF3\x33\x33\x33\x33\x33\x33 hello");
+    /// assert_eq!(1.2f64, buf.get_f64_be());
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_f64_be(&mut self) -> f64 {
+        buf_get_impl!(self, 8, BigEndian::read_f64);
+    }
+
+    /// Gets an IEEE754 double-precision (8 bytes) floating point number from
+    /// `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 8.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::Buf;
+    /// use std::io::Cursor;
+    ///
+    /// let mut buf = Cursor::new(b"\x33\x33\x33\x33\x33\x33\xF3\x3F hello");
+    /// assert_eq!(1.2f64, buf.get_f64_le());
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining data in `self`.
+    fn get_f64_le(&mut self) -> f64 {
+        buf_get_impl!(self, 8, LittleEndian::read_f64);
+    }
+
     /// Transforms a `Buf` into a concrete buffer.
     ///
     /// `collect()` can operate on any value that implements `Buf`, and turn it
@@ -749,3 +1055,7 @@ impl Buf for Option<[u8; 1]> {
         }
     }
 }
+
+// The existance of this function makes the compiler catch if the Buf
+// trait is "object-safe" or not.
+fn _assert_trait_object(_b: &Buf) {}

src/buf/buf_mut.rs

@@ -1,5 +1,5 @@
 use super::{IntoBuf, Writer};
-use byteorder::ByteOrder;
+use byteorder::{LittleEndian, ByteOrder, BigEndian};
 use iovec::IoVec;
 
 use std::{cmp, io, ptr, usize};
@@ -338,41 +338,25 @@ pub trait BufMut {
         self.put_slice(&src)
     }
 
-    /// Writes an unsigned 16 bit integer to `self` in the specified byte order.
-    ///
-    /// The current position is advanced by 2.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use bytes::{BufMut, BigEndian};
-    ///
-    /// let mut buf = vec![];
-    /// buf.put_u16::<BigEndian>(0x0809);
-    /// assert_eq!(buf, b"\x08\x09");
-    /// ```
-    ///
-    /// # Panics
-    ///
-    /// This function panics if there is not enough remaining capacity in
-    /// `self`.
-    fn put_u16<T: ByteOrder>(&mut self, n: u16) {
+    #[doc(hidden)]
+    #[deprecated(note="use put_u16_be or put_u16_le")]
+    fn put_u16<T: ByteOrder>(&mut self, n: u16) where Self: Sized {
         let mut buf = [0; 2];
         T::write_u16(&mut buf, n);
         self.put_slice(&buf)
     }
 
-    /// Writes a signed 16 bit integer to `self` in the specified byte order.
+    /// Writes an unsigned 16 bit integer to `self` in big-endian byte order.
     ///
     /// The current position is advanced by 2.
     ///
     /// # Examples
     ///
     /// ```
-    /// use bytes::{BufMut, BigEndian};
+    /// use bytes::BufMut;
     ///
     /// let mut buf = vec![];
-    /// buf.put_i16::<BigEndian>(0x0809);
+    /// buf.put_u16_be(0x0809);
     /// assert_eq!(buf, b"\x08\x09");
     /// ```
     ///
@@ -380,47 +364,111 @@ pub trait BufMut {
     ///
     /// This function panics if there is not enough remaining capacity in
     /// `self`.
-    fn put_i16<T: ByteOrder>(&mut self, n: i16) {
+    fn put_u16_be(&mut self, n: u16) {
+        let mut buf = [0; 2];
+        BigEndian::write_u16(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    /// Writes an unsigned 16 bit integer to `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 2.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_u16_le(0x0809);
+    /// assert_eq!(buf, b"\x09\x08");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_u16_le(&mut self, n: u16) {
+        let mut buf = [0; 2];
+        LittleEndian::write_u16(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use put_i16_be or put_i16_le")]
+    fn put_i16<T: ByteOrder>(&mut self, n: i16) where Self: Sized {
         let mut buf = [0; 2];
         T::write_i16(&mut buf, n);
         self.put_slice(&buf)
     }
 
-    /// Writes an unsigned 32 bit integer to `self` in the specified byte order.
+    /// Writes a signed 16 bit integer to `self` in big-endian byte order.
     ///
-    /// The current position is advanced by 4.
+    /// The current position is advanced by 2.
     ///
     /// # Examples
     ///
     /// ```
-    /// use bytes::{BufMut, BigEndian};
+    /// use bytes::BufMut;
     ///
     /// let mut buf = vec![];
-    /// buf.put_u32::<BigEndian>(0x0809A0A1);
-    /// assert_eq!(buf, b"\x08\x09\xA0\xA1");
+    /// buf.put_i16_be(0x0809);
+    /// assert_eq!(buf, b"\x08\x09");
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining capacity in
     /// `self`.
-    fn put_u32<T: ByteOrder>(&mut self, n: u32) {
+    fn put_i16_be(&mut self, n: i16) {
+        let mut buf = [0; 2];
+        BigEndian::write_i16(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    /// Writes a signed 16 bit integer to `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 2.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_i16_le(0x0809);
+    /// assert_eq!(buf, b"\x09\x08");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_i16_le(&mut self, n: i16) {
+        let mut buf = [0; 2];
+        LittleEndian::write_i16(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use put_u32_be or put_u32_le")]
+    fn put_u32<T: ByteOrder>(&mut self, n: u32) where Self: Sized {
         let mut buf = [0; 4];
         T::write_u32(&mut buf, n);
         self.put_slice(&buf)
     }
 
-    /// Writes a signed 32 bit integer to `self` in the specified byte order.
+    /// Writes an unsigned 32 bit integer to `self` in big-endian byte order.
     ///
     /// The current position is advanced by 4.
     ///
     /// # Examples
     ///
     /// ```
-    /// use bytes::{BufMut, BigEndian};
+    /// use bytes::BufMut;
     ///
     /// let mut buf = vec![];
-    /// buf.put_i32::<BigEndian>(0x0809A0A1);
+    /// buf.put_u32_be(0x0809A0A1);
     /// assert_eq!(buf, b"\x08\x09\xA0\xA1");
     /// ```
     ///
@@ -428,120 +476,336 @@ pub trait BufMut {
     ///
     /// This function panics if there is not enough remaining capacity in
     /// `self`.
-    fn put_i32<T: ByteOrder>(&mut self, n: i32) {
+    fn put_u32_be(&mut self, n: u32) {
         let mut buf = [0; 4];
-        T::write_i32(&mut buf, n);
+        BigEndian::write_u32(&mut buf, n);
         self.put_slice(&buf)
     }
 
-    /// Writes an unsigned 64 bit integer to `self` in the specified byte order.
-    ///
-    /// The current position is advanced by 8.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use bytes::{BufMut, BigEndian};
-    ///
-    /// let mut buf = vec![];
-    /// buf.put_u64::<BigEndian>(0x0102030405060708);
-    /// assert_eq!(buf, b"\x01\x02\x03\x04\x05\x06\x07\x08");
-    /// ```
-    ///
-    /// # Panics
-    ///
-    /// This function panics if there is not enough remaining capacity in
-    /// `self`.
-    fn put_u64<T: ByteOrder>(&mut self, n: u64) {
-        let mut buf = [0; 8];
-        T::write_u64(&mut buf, n);
-        self.put_slice(&buf)
-    }
-
-    /// Writes a signed 64 bit integer to `self` in the specified byte order.
-    ///
-    /// The current position is advanced by 8.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use bytes::{BufMut, BigEndian};
-    ///
-    /// let mut buf = vec![];
-    /// buf.put_i64::<BigEndian>(0x0102030405060708);
-    /// assert_eq!(buf, b"\x01\x02\x03\x04\x05\x06\x07\x08");
-    /// ```
-    ///
-    /// # Panics
-    ///
-    /// This function panics if there is not enough remaining capacity in
-    /// `self`.
-    fn put_i64<T: ByteOrder>(&mut self, n: i64) {
-        let mut buf = [0; 8];
-        T::write_i64(&mut buf, n);
-        self.put_slice(&buf)
-    }
-
-    /// Writes an unsigned n-byte integer to `self` in the specified byte order.
-    ///
-    /// The current position is advanced by `nbytes`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use bytes::{BufMut, BigEndian};
-    ///
-    /// let mut buf = vec![];
-    /// buf.put_uint::<BigEndian>(0x010203, 3);
-    /// assert_eq!(buf, b"\x01\x02\x03");
-    /// ```
-    ///
-    /// # Panics
-    ///
-    /// This function panics if there is not enough remaining capacity in
-    /// `self`.
-    fn put_uint<T: ByteOrder>(&mut self, n: u64, nbytes: usize) {
-        let mut buf = [0; 8];
-        T::write_uint(&mut buf, n, nbytes);
-        self.put_slice(&buf[0..nbytes])
-    }
-
-    /// Writes a signed n-byte integer to `self` in the specified byte order.
-    ///
-    /// The current position is advanced by `nbytes`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use bytes::{BufMut, BigEndian};
-    ///
-    /// let mut buf = vec![];
-    /// buf.put_int::<BigEndian>(0x010203, 3);
-    /// assert_eq!(buf, b"\x01\x02\x03");
-    /// ```
-    ///
-    /// # Panics
-    ///
-    /// This function panics if there is not enough remaining capacity in
-    /// `self`.
-    fn put_int<T: ByteOrder>(&mut self, n: i64, nbytes: usize) {
-        let mut buf = [0; 8];
-        T::write_int(&mut buf, n, nbytes);
-        self.put_slice(&buf[0..nbytes])
-    }
-
-    /// Writes  an IEEE754 single-precision (4 bytes) floating point number to
-    /// `self` in the specified byte order.
+    /// Writes an unsigned 32 bit integer to `self` in little-endian byte order.
     ///
     /// The current position is advanced by 4.
     ///
     /// # Examples
     ///
     /// ```
-    /// use bytes::{BufMut, BigEndian};
+    /// use bytes::BufMut;
     ///
     /// let mut buf = vec![];
-    /// buf.put_f32::<BigEndian>(1.2f32);
+    /// buf.put_u32_le(0x0809A0A1);
+    /// assert_eq!(buf, b"\xA1\xA0\x09\x08");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_u32_le(&mut self, n: u32) {
+        let mut buf = [0; 4];
+        LittleEndian::write_u32(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use put_i32_be or put_i32_le")]
+    fn put_i32<T: ByteOrder>(&mut self, n: i32) where Self: Sized {
+        let mut buf = [0; 4];
+        T::write_i32(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    /// Writes a signed 32 bit integer to `self` in big-endian byte order.
+    ///
+    /// The current position is advanced by 4.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_i32_be(0x0809A0A1);
+    /// assert_eq!(buf, b"\x08\x09\xA0\xA1");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_i32_be(&mut self, n: i32) {
+        let mut buf = [0; 4];
+        BigEndian::write_i32(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    /// Writes a signed 32 bit integer to `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 4.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_i32_le(0x0809A0A1);
+    /// assert_eq!(buf, b"\xA1\xA0\x09\x08");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_i32_le(&mut self, n: i32) {
+        let mut buf = [0; 4];
+        LittleEndian::write_i32(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use put_u64_be or put_u64_le")]
+    fn put_u64<T: ByteOrder>(&mut self, n: u64) where Self: Sized {
+        let mut buf = [0; 8];
+        T::write_u64(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    /// Writes an unsigned 64 bit integer to `self` in the big-endian byte order.
+    ///
+    /// The current position is advanced by 8.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_u64_be(0x0102030405060708);
+    /// assert_eq!(buf, b"\x01\x02\x03\x04\x05\x06\x07\x08");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_u64_be(&mut self, n: u64) {
+        let mut buf = [0; 8];
+        BigEndian::write_u64(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    /// Writes an unsigned 64 bit integer to `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 8.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_u64_le(0x0102030405060708);
+    /// assert_eq!(buf, b"\x08\x07\x06\x05\x04\x03\x02\x01");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_u64_le(&mut self, n: u64) {
+        let mut buf = [0; 8];
+        LittleEndian::write_u64(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use put_i64_be or put_i64_le")]
+    fn put_i64<T: ByteOrder>(&mut self, n: i64) where Self: Sized {
+        let mut buf = [0; 8];
+        T::write_i64(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    /// Writes a signed 64 bit integer to `self` in the big-endian byte order.
+    ///
+    /// The current position is advanced by 8.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_i64_be(0x0102030405060708);
+    /// assert_eq!(buf, b"\x01\x02\x03\x04\x05\x06\x07\x08");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_i64_be(&mut self, n: i64) {
+        let mut buf = [0; 8];
+        BigEndian::write_i64(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    /// Writes a signed 64 bit integer to `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 8.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_i64_le(0x0102030405060708);
+    /// assert_eq!(buf, b"\x08\x07\x06\x05\x04\x03\x02\x01");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_i64_le(&mut self, n: i64) {
+        let mut buf = [0; 8];
+        LittleEndian::write_i64(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use put_uint_be or put_uint_le")]
+    fn put_uint<T: ByteOrder>(&mut self, n: u64, nbytes: usize) where Self: Sized {
+        let mut buf = [0; 8];
+        T::write_uint(&mut buf, n, nbytes);
+        self.put_slice(&buf[0..nbytes])
+    }
+
+    /// Writes an unsigned n-byte integer to `self` in big-endian byte order.
+    ///
+    /// The current position is advanced by `nbytes`.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_uint_be(0x010203, 3);
+    /// assert_eq!(buf, b"\x01\x02\x03");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_uint_be(&mut self, n: u64, nbytes: usize) {
+        let mut buf = [0; 8];
+        BigEndian::write_uint(&mut buf, n, nbytes);
+        self.put_slice(&buf[0..nbytes])
+    }
+
+    /// Writes an unsigned n-byte integer to `self` in the little-endian byte order.
+    ///
+    /// The current position is advanced by `nbytes`.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_uint_le(0x010203, 3);
+    /// assert_eq!(buf, b"\x03\x02\x01");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_uint_le(&mut self, n: u64, nbytes: usize) {
+        let mut buf = [0; 8];
+        LittleEndian::write_uint(&mut buf, n, nbytes);
+        self.put_slice(&buf[0..nbytes])
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use put_int_be or put_int_le")]
+    fn put_int<T: ByteOrder>(&mut self, n: i64, nbytes: usize) where Self: Sized {
+        let mut buf = [0; 8];
+        T::write_int(&mut buf, n, nbytes);
+        self.put_slice(&buf[0..nbytes])
+    }
+
+    /// Writes a signed n-byte integer to `self` in big-endian byte order.
+    ///
+    /// The current position is advanced by `nbytes`.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_int_be(0x010203, 3);
+    /// assert_eq!(buf, b"\x01\x02\x03");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_int_be(&mut self, n: i64, nbytes: usize) {
+        let mut buf = [0; 8];
+        BigEndian::write_int(&mut buf, n, nbytes);
+        self.put_slice(&buf[0..nbytes])
+    }
+
+    /// Writes a signed n-byte integer to `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by `nbytes`.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_int_le(0x010203, 3);
+    /// assert_eq!(buf, b"\x03\x02\x01");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_int_le(&mut self, n: i64, nbytes: usize) {
+        let mut buf = [0; 8];
+        LittleEndian::write_int(&mut buf, n, nbytes);
+        self.put_slice(&buf[0..nbytes])
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use put_f32_be or put_f32_le")]
+    fn put_f32<T: ByteOrder>(&mut self, n: f32) where Self: Sized {
+        let mut buf = [0; 4];
+        T::write_f32(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    /// Writes  an IEEE754 single-precision (4 bytes) floating point number to
+    /// `self` in big-endian byte order.
+    ///
+    /// The current position is advanced by 4.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_f32_be(1.2f32);
     /// assert_eq!(buf, b"\x3F\x99\x99\x9A");
     /// ```
     ///
@@ -549,24 +813,57 @@ pub trait BufMut {
     ///
     /// This function panics if there is not enough remaining capacity in
     /// `self`.
-    fn put_f32<T: ByteOrder>(&mut self, n: f32) {
+    fn put_f32_be(&mut self, n: f32) {
         let mut buf = [0; 4];
-        T::write_f32(&mut buf, n);
+        BigEndian::write_f32(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    /// Writes  an IEEE754 single-precision (4 bytes) floating point number to
+    /// `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 4.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_f32_le(1.2f32);
+    /// assert_eq!(buf, b"\x9A\x99\x99\x3F");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_f32_le(&mut self, n: f32) {
+        let mut buf = [0; 4];
+        LittleEndian::write_f32(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    #[doc(hidden)]
+    #[deprecated(note="use put_f64_be or put_f64_le")]
+    fn put_f64<T: ByteOrder>(&mut self, n: f64) where Self: Sized {
+        let mut buf = [0; 8];
+        T::write_f64(&mut buf, n);
         self.put_slice(&buf)
     }
 
     /// Writes  an IEEE754 double-precision (8 bytes) floating point number to
-    /// `self` in the specified byte order.
+    /// `self` in big-endian byte order.
     ///
     /// The current position is advanced by 8.
     ///
     /// # Examples
     ///
     /// ```
-    /// use bytes::{BufMut, BigEndian};
+    /// use bytes::BufMut;
     ///
     /// let mut buf = vec![];
-    /// buf.put_f64::<BigEndian>(1.2f64);
+    /// buf.put_f64_be(1.2f64);
     /// assert_eq!(buf, b"\x3F\xF3\x33\x33\x33\x33\x33\x33");
     /// ```
     ///
@@ -574,9 +871,34 @@ pub trait BufMut {
     ///
     /// This function panics if there is not enough remaining capacity in
     /// `self`.
-    fn put_f64<T: ByteOrder>(&mut self, n: f64) {
+    fn put_f64_be(&mut self, n: f64) {
         let mut buf = [0; 8];
-        T::write_f64(&mut buf, n);
+        BigEndian::write_f64(&mut buf, n);
+        self.put_slice(&buf)
+    }
+
+    /// Writes  an IEEE754 double-precision (8 bytes) floating point number to
+    /// `self` in little-endian byte order.
+    ///
+    /// The current position is advanced by 8.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use bytes::BufMut;
+    ///
+    /// let mut buf = vec![];
+    /// buf.put_f64_le(1.2f64);
+    /// assert_eq!(buf, b"\x33\x33\x33\x33\x33\x33\xF3\x3F");
+    /// ```
+    ///
+    /// # Panics
+    ///
+    /// This function panics if there is not enough remaining capacity in
+    /// `self`.
+    fn put_f64_le(&mut self, n: f64) {
+        let mut buf = [0; 8];
+        LittleEndian::write_f64(&mut buf, n);
         self.put_slice(&buf)
     }
 
@@ -734,3 +1056,7 @@ impl BufMut for Vec<u8> {
         &mut slice::from_raw_parts_mut(ptr, cap)[len..]
     }
 }
+
+// The existance of this function makes the compiler catch if the BufMut
+// trait is "object-safe" or not.
+fn _assert_trait_object(_b: &BufMut) {}

src/buf/take.rs

@@ -143,7 +143,8 @@ impl<T: Buf> Buf for Take<T> {
     }
 
     fn bytes(&self) -> &[u8] {
-        &self.inner.bytes()[..self.limit]
+        let bytes = self.inner.bytes();
+        &bytes[..cmp::min(bytes.len(), self.limit)]
     }
 
     fn advance(&mut self, cnt: usize) {

src/debug.rs

@@ -27,8 +27,8 @@ impl<'a> fmt::Debug for BsDebug<'a> {
                 try!(write!(fmt, "\\{}", c as char));
             } else if c == b'\0' {
                 try!(write!(fmt, "\\0"));
-            // ASCII printable except space
-            } else if c > 0x20 && c < 0x7f {
+            // ASCII printable
+            } else if c >= 0x20 && c < 0x7f {
                 try!(write!(fmt, "{}", c as char));
             } else {
                 try!(write!(fmt, "\\x{:02x}", c));

src/lib.rs

@@ -69,7 +69,7 @@
 //! and `BufMut` are infallible.
 
 #![deny(warnings, missing_docs, missing_debug_implementations)]
-#![doc(html_root_url = "https://docs.rs/bytes/0.4")]
+#![doc(html_root_url = "https://docs.rs/bytes/0.4.7")]
 
 extern crate byteorder;
 extern crate iovec;
@@ -92,6 +92,7 @@ mod bytes;
 mod debug;
 pub use bytes::{Bytes, BytesMut};
 
+#[deprecated]
 pub use byteorder::{ByteOrder, BigEndian, LittleEndian};
 
 // Optional Serde support

tests/test_buf.rs

@@ -33,21 +33,26 @@ fn test_get_u8() {
 #[test]
 fn test_get_u16() {
     let buf = b"\x21\x54zomg";
-    assert_eq!(0x2154, Cursor::new(buf).get_u16::<byteorder::BigEndian>());
-    assert_eq!(0x5421, Cursor::new(buf).get_u16::<byteorder::LittleEndian>());
+    assert_eq!(0x2154, Cursor::new(buf).get_u16_be());
+    assert_eq!(0x5421, Cursor::new(buf).get_u16_le());
 }
 
 #[test]
 #[should_panic]
 fn test_get_u16_buffer_underflow() {
     let mut buf = Cursor::new(b"\x21");
-    buf.get_u16::<byteorder::BigEndian>();
+    buf.get_u16_be();
 }
 
 #[test]
 fn test_bufs_vec() {
     let buf = Cursor::new(b"hello world");
-    let mut dst: [&IoVec; 2] = Default::default();
+
+    let b1: &[u8] = &mut [0];
+    let b2: &[u8] = &mut [0];
+
+    let mut dst: [&IoVec; 2] =
+        [b1.into(), b2.into()];
 
     assert_eq!(1, buf.bytes_vec(&mut dst[..]));
 }

tests/test_buf_mut.rs

@@ -41,11 +41,11 @@ fn test_put_u8() {
 #[test]
 fn test_put_u16() {
     let mut buf = Vec::with_capacity(8);
-    buf.put_u16::<byteorder::BigEndian>(8532);
+    buf.put_u16_be(8532);
     assert_eq!(b"\x21\x54", &buf[..]);
 
     buf.clear();
-    buf.put_u16::<byteorder::LittleEndian>(8532);
+    buf.put_u16_le(8532);
     assert_eq!(b"\x54\x21", &buf[..]);
 }
 

tests/test_bytes.rs

@@ -51,6 +51,28 @@ fn fmt() {
     assert_eq!(a, b);
 }
 
+#[test]
+fn fmt_write() {
+    use std::fmt::Write;
+    use std::iter::FromIterator;
+    let s = String::from_iter((0..10).map(|_| "abcdefg"));
+
+    let mut a = BytesMut::with_capacity(64);
+    write!(a, "{}", &s[..64]).unwrap();
+    assert_eq!(a, s[..64].as_bytes());
+
+
+    let mut b = BytesMut::with_capacity(64);
+    write!(b, "{}", &s[..32]).unwrap();
+    write!(b, "{}", &s[32..64]).unwrap();
+    assert_eq!(b, s[..64].as_bytes());
+
+
+    let mut c = BytesMut::with_capacity(64);
+    write!(c, "{}", s).unwrap_err();
+    assert!(c.is_empty());
+}
+
 #[test]
 fn len() {
     let a = Bytes::from(&b"abcdefg"[..]);
@@ -328,16 +350,16 @@ fn reserve_growth() {
 
 #[test]
 fn reserve_allocates_at_least_original_capacity() {
-    let mut bytes = BytesMut::with_capacity(128);
+    let mut bytes = BytesMut::with_capacity(1024);
 
-    for i in 0..120 {
+    for i in 0..1020 {
         bytes.put(i as u8);
     }
 
     let _other = bytes.take();
 
     bytes.reserve(16);
-    assert_eq!(bytes.capacity(), 128);
+    assert_eq!(bytes.capacity(), 1024);
 }
 
 #[test]
@@ -444,6 +466,44 @@ fn from_static() {
     assert_eq!(b, b"b"[..]);
 }
 
+#[test]
+fn advance_inline() {
+    let mut a = Bytes::from(&b"hello world"[..]);
+    a.advance(6);
+    assert_eq!(a, &b"world"[..]);
+}
+
+#[test]
+fn advance_static() {
+    let mut a = Bytes::from_static(b"hello world");
+    a.advance(6);
+    assert_eq!(a, &b"world"[..]);
+}
+
+#[test]
+fn advance_vec() {
+    let mut a = BytesMut::from(b"hello world boooo yah world zomg wat wat".to_vec());
+    a.advance(16);
+    assert_eq!(a, b"o yah world zomg wat wat"[..]);
+
+    a.advance(4);
+    assert_eq!(a, b"h world zomg wat wat"[..]);
+
+    // Reserve some space.
+    a.reserve(1024);
+    assert_eq!(a, b"h world zomg wat wat"[..]);
+
+    a.advance(6);
+    assert_eq!(a, b"d zomg wat wat"[..]);
+}
+
+#[test]
+#[should_panic]
+fn advance_past_len() {
+    let mut a = BytesMut::from(b"hello world".to_vec());
+    a.advance(20);
+}
+
 #[test]
 // Only run these tests on little endian systems. CI uses qemu for testing
 // little endian... and qemu doesn't really support threading all that well.
@@ -481,3 +541,136 @@ fn stress() {
         assert_eq!(*buf, data[..]);
     }
 }
+
+#[test]
+fn partial_eq_bytesmut() {
+    let bytes = Bytes::from(&b"The quick red fox"[..]);
+    let bytesmut = BytesMut::from(&b"The quick red fox"[..]);
+    assert!(bytes == bytesmut);
+    assert!(bytesmut == bytes);
+    let bytes2 = Bytes::from(&b"Jumped over the lazy brown dog"[..]);
+    assert!(bytes2 != bytesmut);
+    assert!(bytesmut != bytes2);
+}
+
+#[test]
+fn unsplit_basic() {
+    let mut buf = BytesMut::with_capacity(64);
+    buf.extend_from_slice(b"aaabbbcccddd");
+
+    let splitted = buf.split_off(6);
+    assert_eq!(b"aaabbb", &buf[..]);
+    assert_eq!(b"cccddd", &splitted[..]);
+
+    buf.unsplit(splitted);
+    assert_eq!(b"aaabbbcccddd", &buf[..]);
+}
+
+#[test]
+fn unsplit_empty_other() {
+    let mut buf = BytesMut::with_capacity(64);
+    buf.extend_from_slice(b"aaabbbcccddd");
+
+    // empty other
+    let other = BytesMut::new();
+
+    buf.unsplit(other);
+    assert_eq!(b"aaabbbcccddd", &buf[..]);
+}
+
+#[test]
+fn unsplit_empty_self() {
+    // empty self
+    let mut buf = BytesMut::new();
+
+    let mut other = BytesMut::with_capacity(64);
+    other.extend_from_slice(b"aaabbbcccddd");
+
+    buf.unsplit(other);
+    assert_eq!(b"aaabbbcccddd", &buf[..]);
+}
+
+#[test]
+fn unsplit_inline_arc() {
+    let mut buf = BytesMut::with_capacity(8); //inline
+    buf.extend_from_slice(b"aaaabbbb");
+
+    let mut buf2 = BytesMut::with_capacity(64);
+    buf2.extend_from_slice(b"ccccddddeeee");
+
+    buf2.split_off(8); //arc
+
+    buf.unsplit(buf2);
+    assert_eq!(b"aaaabbbbccccdddd", &buf[..]);
+}
+
+#[test]
+fn unsplit_arc_inline() {
+    let mut buf = BytesMut::with_capacity(64);
+    buf.extend_from_slice(b"aaaabbbbeeee");
+
+    buf.split_off(8); //arc
+
+    let mut buf2 = BytesMut::with_capacity(8); //inline
+    buf2.extend_from_slice(b"ccccdddd");
+
+    buf.unsplit(buf2);
+    assert_eq!(b"aaaabbbbccccdddd", &buf[..]);
+
+}
+
+#[test]
+fn unsplit_both_inline() {
+    let mut buf = BytesMut::with_capacity(16); //inline
+    buf.extend_from_slice(b"aaaabbbbccccdddd");
+
+    let splitted = buf.split_off(8); // both inline
+    assert_eq!(b"aaaabbbb", &buf[..]);
+    assert_eq!(b"ccccdddd", &splitted[..]);
+
+    buf.unsplit(splitted);
+    assert_eq!(b"aaaabbbbccccdddd", &buf[..]);
+}
+
+
+#[test]
+fn unsplit_arc_different() {
+    let mut buf = BytesMut::with_capacity(64);
+    buf.extend_from_slice(b"aaaabbbbeeee");
+
+    buf.split_off(8); //arc
+
+    let mut buf2 = BytesMut::with_capacity(64);
+    buf2.extend_from_slice(b"ccccddddeeee");
+
+    buf2.split_off(8); //arc
+
+    buf.unsplit(buf2);
+    assert_eq!(b"aaaabbbbccccdddd", &buf[..]);
+}
+
+#[test]
+fn unsplit_arc_non_contiguous() {
+    let mut buf = BytesMut::with_capacity(64);
+    buf.extend_from_slice(b"aaaabbbbeeeeccccdddd");
+
+    let mut buf2 = buf.split_off(8); //arc
+
+    let buf3 = buf2.split_off(4); //arc
+
+    buf.unsplit(buf3);
+    assert_eq!(b"aaaabbbbccccdddd", &buf[..]);
+}
+
+#[test]
+fn unsplit_two_split_offs() {
+    let mut buf = BytesMut::with_capacity(64);
+    buf.extend_from_slice(b"aaaabbbbccccdddd");
+
+    let mut buf2 = buf.split_off(8); //arc
+    let buf3 = buf2.split_off(4); //arc
+
+    buf2.unsplit(buf3);
+    buf.unsplit(buf2);
+    assert_eq!(b"aaaabbbbccccdddd", &buf[..]);
+}

tests/test_chain.rs

@@ -55,48 +55,68 @@ fn vectored_read() {
     let mut buf = a.chain(b);
 
     {
-        let mut iovecs: [&IoVec; 4] = Default::default();
+        let b1: &[u8] = &mut [0];
+        let b2: &[u8] = &mut [0];
+        let b3: &[u8] = &mut [0];
+        let b4: &[u8] = &mut [0];
+        let mut iovecs: [&IoVec; 4] =
+            [b1.into(), b2.into(), b3.into(), b4.into()];
 
         assert_eq!(2, buf.bytes_vec(&mut iovecs));
         assert_eq!(iovecs[0][..], b"hello"[..]);
         assert_eq!(iovecs[1][..], b"world"[..]);
-        assert!(iovecs[2].is_empty());
-        assert!(iovecs[3].is_empty());
+        assert_eq!(iovecs[2][..], b"\0"[..]);
+        assert_eq!(iovecs[3][..], b"\0"[..]);
     }
 
     buf.advance(2);
 
     {
-        let mut iovecs: [&IoVec; 4] = Default::default();
+        let b1: &[u8] = &mut [0];
+        let b2: &[u8] = &mut [0];
+        let b3: &[u8] = &mut [0];
+        let b4: &[u8] = &mut [0];
+        let mut iovecs: [&IoVec; 4] =
+            [b1.into(), b2.into(), b3.into(), b4.into()];
 
         assert_eq!(2, buf.bytes_vec(&mut iovecs));
         assert_eq!(iovecs[0][..], b"llo"[..]);
         assert_eq!(iovecs[1][..], b"world"[..]);
-        assert!(iovecs[2].is_empty());
-        assert!(iovecs[3].is_empty());
+        assert_eq!(iovecs[2][..], b"\0"[..]);
+        assert_eq!(iovecs[3][..], b"\0"[..]);
     }
 
     buf.advance(3);
 
     {
-        let mut iovecs: [&IoVec; 4] = Default::default();
+        let b1: &[u8] = &mut [0];
+        let b2: &[u8] = &mut [0];
+        let b3: &[u8] = &mut [0];
+        let b4: &[u8] = &mut [0];
+        let mut iovecs: [&IoVec; 4] =
+            [b1.into(), b2.into(), b3.into(), b4.into()];
 
         assert_eq!(1, buf.bytes_vec(&mut iovecs));
         assert_eq!(iovecs[0][..], b"world"[..]);
-        assert!(iovecs[1].is_empty());
-        assert!(iovecs[2].is_empty());
-        assert!(iovecs[3].is_empty());
+        assert_eq!(iovecs[1][..], b"\0"[..]);
+        assert_eq!(iovecs[2][..], b"\0"[..]);
+        assert_eq!(iovecs[3][..], b"\0"[..]);
     }
 
     buf.advance(3);
 
     {
-        let mut iovecs: [&IoVec; 4] = Default::default();
+        let b1: &[u8] = &mut [0];
+        let b2: &[u8] = &mut [0];
+        let b3: &[u8] = &mut [0];
+        let b4: &[u8] = &mut [0];
+        let mut iovecs: [&IoVec; 4] =
+            [b1.into(), b2.into(), b3.into(), b4.into()];
 
         assert_eq!(1, buf.bytes_vec(&mut iovecs));
         assert_eq!(iovecs[0][..], b"ld"[..]);
-        assert!(iovecs[1].is_empty());
-        assert!(iovecs[2].is_empty());
-        assert!(iovecs[3].is_empty());
+        assert_eq!(iovecs[1][..], b"\0"[..]);
+        assert_eq!(iovecs[2][..], b"\0"[..]);
+        assert_eq!(iovecs[3][..], b"\0"[..]);
     }
 }

tests/test_debug.rs

@@ -11,7 +11,7 @@ fn fmt() {
         \\x08\\t\\n\\x0b\\x0c\\r\\x0e\\x0f\
         \\x10\\x11\\x12\\x13\\x14\\x15\\x16\\x17\
         \\x18\\x19\\x1a\\x1b\\x1c\\x1d\\x1e\\x1f\
-        \\x20!\\\"#$%&'()*+,-./0123456789:;<=>?\
+        \x20!\\\"#$%&'()*+,-./0123456789:;<=>?\
         @ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\\\]^_\
         `abcdefghijklmnopqrstuvwxyz{|}~\\x7f\
         \\x80\\x81\\x82\\x83\\x84\\x85\\x86\\x87\

tests/test_take.rs

@@ -0,0 +1,13 @@
+extern crate bytes;
+
+use bytes::Buf;
+use std::io::Cursor;
+
+#[test]
+fn long_take() {
+    // Tests that take with a size greater than the buffer length will not
+    // overrun the buffer. Regression test for #138.
+    let buf = Cursor::new(b"hello world").take(100);
+    assert_eq!(11, buf.remaining());
+    assert_eq!(b"hello world", buf.bytes());
+}