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 <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/bytes-1.4.0/src/buf/buf_impl.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>buf_impl.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../bytes/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../bytes/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span>
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 </pre><pre class="rust"><code><span class="attribute">#[cfg(feature = <span class="string">&quot;std&quot;</span>)]
 </span><span class="kw">use </span><span class="kw">crate</span>::buf::{reader, Reader};
 <span class="kw">use </span><span class="kw">crate</span>::buf::{take, Chain, Take};

 <span class="kw">use </span>core::{cmp, mem, ptr};

 <span class="attribute">#[cfg(feature = <span class="string">&quot;std&quot;</span>)]
 </span><span class="kw">use </span>std::io::IoSlice;

 <span class="kw">use </span>alloc::boxed::Box;

 <span class="macro">macro_rules! </span>buf_get_impl {
     (<span class="macro-nonterminal">$this</span>:ident, <span class="macro-nonterminal">$typ</span>:tt::<span class="macro-nonterminal">$conv</span>:tt) =&gt; {{
         <span class="kw">const </span>SIZE: usize = mem::size_of::&lt;<span class="macro-nonterminal">$typ</span>&gt;();
         <span class="comment">// try to convert directly from the bytes
         // this Option&lt;ret&gt; trick is to avoid keeping a borrow on self
         // when advance() is called (mut borrow) and to call bytes() only once
         </span><span class="kw">let </span>ret = <span class="macro-nonterminal">$this
             </span>.chunk()
             .get(..SIZE)
             .map(|src| <span class="kw">unsafe </span>{ <span class="macro-nonterminal">$typ</span>::<span class="macro-nonterminal">$conv</span>(<span class="kw-2">*</span>(src <span class="kw">as </span><span class="kw-2">*const </span><span class="kw">_ as </span><span class="kw-2">*const </span>[<span class="kw">_</span>; SIZE])) });

         <span class="kw">if let </span><span class="prelude-val">Some</span>(ret) = ret {
             <span class="comment">// if the direct conversion was possible, advance and return
             </span><span class="macro-nonterminal">$this</span>.advance(SIZE);
             <span class="kw">return </span>ret;
         } <span class="kw">else </span>{
             <span class="comment">// if not we copy the bytes in a temp buffer then convert
             </span><span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; SIZE];
             <span class="macro-nonterminal">$this</span>.copy_to_slice(<span class="kw-2">&amp;mut </span>buf); <span class="comment">// (do the advance)
             </span><span class="kw">return </span><span class="macro-nonterminal">$typ</span>::<span class="macro-nonterminal">$conv</span>(buf);
         }
     }};
     (le =&gt; <span class="macro-nonterminal">$this</span>:ident, <span class="macro-nonterminal">$typ</span>:tt, <span class="macro-nonterminal">$len_to_read</span>:expr) =&gt; {{
         <span class="macro">debug_assert!</span>(mem::size_of::&lt;<span class="macro-nonterminal">$typ</span>&gt;() &gt;= <span class="macro-nonterminal">$len_to_read</span>);

         <span class="comment">// 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
         </span><span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; (mem::size_of::&lt;<span class="macro-nonterminal">$typ</span>&gt;())];
         <span class="macro-nonterminal">$this</span>.copy_to_slice(<span class="kw-2">&amp;mut </span>buf[..(<span class="macro-nonterminal">$len_to_read</span>)]);
         <span class="kw">return </span><span class="macro-nonterminal">$typ::from_le_bytes</span>(buf);
     }};
     (be =&gt; <span class="macro-nonterminal">$this</span>:ident, <span class="macro-nonterminal">$typ</span>:tt, <span class="macro-nonterminal">$len_to_read</span>:expr) =&gt; {{
         <span class="macro">debug_assert!</span>(mem::size_of::&lt;<span class="macro-nonterminal">$typ</span>&gt;() &gt;= <span class="macro-nonterminal">$len_to_read</span>);

         <span class="kw">let </span><span class="kw-2">mut </span>buf = [<span class="number">0</span>; (mem::size_of::&lt;<span class="macro-nonterminal">$typ</span>&gt;())];
         <span class="macro-nonterminal">$this</span>.copy_to_slice(<span class="kw-2">&amp;mut </span>buf[mem::size_of::&lt;<span class="macro-nonterminal">$typ</span>&gt;() - (<span class="macro-nonterminal">$len_to_read</span>)..]);
         <span class="kw">return </span><span class="macro-nonterminal">$typ::from_be_bytes</span>(buf);
     }};
 }

 <span class="doccomment">/// Read bytes from a buffer.
 ///
 /// A buffer stores bytes in memory such that read operations are infallible.
 /// The underlying storage may or may not be in contiguous memory. A `Buf` value
 /// is a cursor into the buffer. Reading from `Buf` advances the cursor
 /// position. It can be thought of as an efficient `Iterator` for collections of
 /// bytes.
 ///
 /// The simplest `Buf` is a `&amp;[u8]`.
 ///
 /// ```
 /// use bytes::Buf;
 ///
 /// let mut buf = &amp;b&quot;hello world&quot;[..];
 ///
 /// assert_eq!(b&#39;h&#39;, buf.get_u8());
 /// assert_eq!(b&#39;e&#39;, buf.get_u8());
 /// assert_eq!(b&#39;l&#39;, buf.get_u8());
 ///
 /// let mut rest = [0; 8];
 /// buf.copy_to_slice(&amp;mut rest);
 ///
 /// assert_eq!(&amp;rest[..], &amp;b&quot;lo world&quot;[..]);
 /// ```
 </span><span class="kw">pub trait </span>Buf {
     <span class="doccomment">/// Returns the number of bytes between the current position and the end of
     /// the buffer.
     ///
     /// This value is greater than or equal to the length of the slice returned
     /// by `chunk()`.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;hello world&quot;[..];
     ///
     /// assert_eq!(buf.remaining(), 11);
     ///
     /// buf.get_u8();
     ///
     /// assert_eq!(buf.remaining(), 10);
     /// ```
     ///
     /// # Implementer notes
     ///
     /// Implementations of `remaining` should ensure that the return value does
     /// not change unless a call is made to `advance` or any other function that
     /// is documented to change the `Buf`&#39;s current position.
     </span><span class="kw">fn </span>remaining(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize;

     <span class="doccomment">/// Returns a slice starting at the current position and of length between 0
     /// and `Buf::remaining()`. Note that this *can* return shorter slice (this allows
     /// non-continuous internal representation).
     ///
     /// This is a lower level function. Most operations are done with other
     /// functions.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;hello world&quot;[..];
     ///
     /// assert_eq!(buf.chunk(), &amp;b&quot;hello world&quot;[..]);
     ///
     /// buf.advance(6);
     ///
     /// assert_eq!(buf.chunk(), &amp;b&quot;world&quot;[..]);
     /// ```
     ///
     /// # Implementer notes
     ///
     /// This function should never panic. Once the end of the buffer is reached,
     /// i.e., `Buf::remaining` returns 0, calls to `chunk()` should return an
     /// empty slice.
     </span><span class="comment">// The `chunk` method was previously called `bytes`. This alias makes the rename
     // more easily discoverable.
     </span><span class="attribute">#[cfg_attr(docsrs, doc(alias = <span class="string">&quot;bytes&quot;</span>))]
     </span><span class="kw">fn </span>chunk(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;</span>[u8];

     <span class="doccomment">/// Fills `dst` with potentially multiple slices starting at `self`&#39;s
     /// current position.
     ///
     /// If the `Buf` is backed by disjoint slices of bytes, `chunk_vectored` enables
     /// fetching more than one slice at once. `dst` is a slice of `IoSlice`
     /// references, enabling the slice to be directly used with [`writev`]
     /// without any further conversion. The sum of the lengths of all the
     /// buffers in `dst` will be less than or equal to `Buf::remaining()`.
     ///
     /// The entries in `dst` will be overwritten, but the data **contained** by
     /// the slices **will not** be modified. If `chunk_vectored` does not fill every
     /// entry in `dst`, then `dst` is guaranteed to contain all remaining slices
     /// in `self.
     ///
     /// This is a lower level function. Most operations are done with other
     /// functions.
     ///
     /// # Implementer notes
     ///
     /// This function should never panic. Once the end of the buffer is reached,
     /// i.e., `Buf::remaining` returns 0, calls to `chunk_vectored` must return 0
     /// without mutating `dst`.
     ///
     /// Implementations should also take care to properly handle being called
     /// with `dst` being a zero length slice.
     ///
     /// [`writev`]: http://man7.org/linux/man-pages/man2/readv.2.html
     </span><span class="attribute">#[cfg(feature = <span class="string">&quot;std&quot;</span>)]
     #[cfg_attr(docsrs, doc(cfg(feature = <span class="string">&quot;std&quot;</span>)))]
     </span><span class="kw">fn </span>chunks_vectored&lt;<span class="lifetime">&#39;a</span>&gt;(<span class="kw-2">&amp;</span><span class="lifetime">&#39;a </span><span class="self">self</span>, dst: <span class="kw-2">&amp;mut </span>[IoSlice&lt;<span class="lifetime">&#39;a</span>&gt;]) -&gt; usize {
         <span class="kw">if </span>dst.is_empty() {
             <span class="kw">return </span><span class="number">0</span>;
         }

         <span class="kw">if </span><span class="self">self</span>.has_remaining() {
             dst[<span class="number">0</span>] = IoSlice::new(<span class="self">self</span>.chunk());
             <span class="number">1
         </span>} <span class="kw">else </span>{
             <span class="number">0
         </span>}
     }

     <span class="doccomment">/// Advance the internal cursor of the Buf
     ///
     /// The next call to `chunk()` will return a slice starting `cnt` bytes
     /// further into the underlying buffer.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;hello world&quot;[..];
     ///
     /// assert_eq!(buf.chunk(), &amp;b&quot;hello world&quot;[..]);
     ///
     /// buf.advance(6);
     ///
     /// assert_eq!(buf.chunk(), &amp;b&quot;world&quot;[..]);
     /// ```
     ///
     /// # Panics
     ///
     /// This function **may** panic if `cnt &gt; self.remaining()`.
     ///
     /// # Implementer notes
     ///
     /// It is recommended for implementations of `advance` to panic if `cnt &gt;
     /// self.remaining()`. If the implementation does not panic, the call must
     /// behave as if `cnt == self.remaining()`.
     ///
     /// A call with `cnt == 0` should never panic and be a no-op.
     </span><span class="kw">fn </span>advance(<span class="kw-2">&amp;mut </span><span class="self">self</span>, cnt: usize);

     <span class="doccomment">/// Returns true if there are any more bytes to consume
     ///
     /// This is equivalent to `self.remaining() != 0`.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;a&quot;[..];
     ///
     /// assert!(buf.has_remaining());
     ///
     /// buf.get_u8();
     ///
     /// assert!(!buf.has_remaining());
     /// ```
     </span><span class="kw">fn </span>has_remaining(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
         <span class="self">self</span>.remaining() &gt; <span class="number">0
     </span>}

     <span class="doccomment">/// Copies bytes from `self` into `dst`.
     ///
     /// The cursor is advanced by the number of bytes copied. `self` must have
     /// enough remaining bytes to fill `dst`.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;hello world&quot;[..];
     /// let mut dst = [0; 5];
     ///
     /// buf.copy_to_slice(&amp;mut dst);
     /// assert_eq!(&amp;b&quot;hello&quot;[..], &amp;dst);
     /// assert_eq!(6, buf.remaining());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if `self.remaining() &lt; dst.len()`
     </span><span class="kw">fn </span>copy_to_slice(<span class="kw-2">&amp;mut </span><span class="self">self</span>, dst: <span class="kw-2">&amp;mut </span>[u8]) {
         <span class="kw">let </span><span class="kw-2">mut </span>off = <span class="number">0</span>;

         <span class="macro">assert!</span>(<span class="self">self</span>.remaining() &gt;= dst.len());

         <span class="kw">while </span>off &lt; dst.len() {
             <span class="kw">let </span>cnt;

             <span class="kw">unsafe </span>{
                 <span class="kw">let </span>src = <span class="self">self</span>.chunk();
                 cnt = cmp::min(src.len(), dst.len() - off);

                 ptr::copy_nonoverlapping(src.as_ptr(), dst[off..].as_mut_ptr(), cnt);

                 off += cnt;
             }

             <span class="self">self</span>.advance(cnt);
         }
     }

     <span class="doccomment">/// Gets an unsigned 8 bit integer from `self`.
     ///
     /// The current position is advanced by 1.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x08 hello&quot;[..];
     /// assert_eq!(8, buf.get_u8());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is no more remaining data in `self`.
     </span><span class="kw">fn </span>get_u8(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u8 {
         <span class="macro">assert!</span>(<span class="self">self</span>.remaining() &gt;= <span class="number">1</span>);
         <span class="kw">let </span>ret = <span class="self">self</span>.chunk()[<span class="number">0</span>];
         <span class="self">self</span>.advance(<span class="number">1</span>);
         ret
     }

     <span class="doccomment">/// Gets a signed 8 bit integer from `self`.
     ///
     /// The current position is advanced by 1.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x08 hello&quot;[..];
     /// assert_eq!(8, buf.get_i8());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is no more remaining data in `self`.
     </span><span class="kw">fn </span>get_i8(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i8 {
         <span class="macro">assert!</span>(<span class="self">self</span>.remaining() &gt;= <span class="number">1</span>);
         <span class="kw">let </span>ret = <span class="self">self</span>.chunk()[<span class="number">0</span>] <span class="kw">as </span>i8;
         <span class="self">self</span>.advance(<span class="number">1</span>);
         ret
     }

     <span class="doccomment">/// Gets an unsigned 16 bit integer from `self` in big-endian byte order.
     ///
     /// The current position is advanced by 2.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x08\x09 hello&quot;[..];
     /// assert_eq!(0x0809, buf.get_u16());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_u16(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u16 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, u16::from_be_bytes);
     }

     <span class="doccomment">/// Gets an unsigned 16 bit integer from `self` in little-endian byte order.
     ///
     /// The current position is advanced by 2.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x09\x08 hello&quot;[..];
     /// assert_eq!(0x0809, buf.get_u16_le());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_u16_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u16 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, u16::from_le_bytes);
     }

     <span class="doccomment">/// Gets an unsigned 16 bit integer from `self` in native-endian byte order.
     ///
     /// The current position is advanced by 2.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf: &amp;[u8] = match cfg!(target_endian = &quot;big&quot;) {
     ///     true =&gt; b&quot;\x08\x09 hello&quot;,
     ///     false =&gt; b&quot;\x09\x08 hello&quot;,
     /// };
     /// assert_eq!(0x0809, buf.get_u16_ne());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_u16_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u16 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, u16::from_ne_bytes);
     }

     <span class="doccomment">/// Gets a signed 16 bit integer from `self` in big-endian byte order.
     ///
     /// The current position is advanced by 2.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x08\x09 hello&quot;[..];
     /// assert_eq!(0x0809, buf.get_i16());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_i16(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i16 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, i16::from_be_bytes);
     }

     <span class="doccomment">/// Gets a signed 16 bit integer from `self` in little-endian byte order.
     ///
     /// The current position is advanced by 2.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x09\x08 hello&quot;[..];
     /// assert_eq!(0x0809, buf.get_i16_le());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_i16_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i16 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, i16::from_le_bytes);
     }

     <span class="doccomment">/// Gets a signed 16 bit integer from `self` in native-endian byte order.
     ///
     /// The current position is advanced by 2.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf: &amp;[u8] = match cfg!(target_endian = &quot;big&quot;) {
     ///     true =&gt; b&quot;\x08\x09 hello&quot;,
     ///     false =&gt; b&quot;\x09\x08 hello&quot;,
     /// };
     /// assert_eq!(0x0809, buf.get_i16_ne());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_i16_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i16 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, i16::from_ne_bytes);
     }

     <span class="doccomment">/// 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;
     ///
     /// let mut buf = &amp;b&quot;\x08\x09\xA0\xA1 hello&quot;[..];
     /// assert_eq!(0x0809A0A1, buf.get_u32());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_u32(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u32 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, u32::from_be_bytes);
     }

     <span class="doccomment">/// 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;
     ///
     /// let mut buf = &amp;b&quot;\xA1\xA0\x09\x08 hello&quot;[..];
     /// assert_eq!(0x0809A0A1, buf.get_u32_le());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_u32_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u32 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, u32::from_le_bytes);
     }

     <span class="doccomment">/// Gets an unsigned 32 bit integer from `self` in native-endian byte order.
     ///
     /// The current position is advanced by 4.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf: &amp;[u8] = match cfg!(target_endian = &quot;big&quot;) {
     ///     true =&gt; b&quot;\x08\x09\xA0\xA1 hello&quot;,
     ///     false =&gt; b&quot;\xA1\xA0\x09\x08 hello&quot;,
     /// };
     /// assert_eq!(0x0809A0A1, buf.get_u32_ne());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_u32_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u32 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, u32::from_ne_bytes);
     }

     <span class="doccomment">/// Gets a signed 32 bit integer from `self` in big-endian byte order.
     ///
     /// The current position is advanced by 4.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x08\x09\xA0\xA1 hello&quot;[..];
     /// assert_eq!(0x0809A0A1, buf.get_i32());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_i32(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i32 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, i32::from_be_bytes);
     }

     <span class="doccomment">/// Gets a signed 32 bit integer from `self` in little-endian byte order.
     ///
     /// The current position is advanced by 4.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\xA1\xA0\x09\x08 hello&quot;[..];
     /// assert_eq!(0x0809A0A1, buf.get_i32_le());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_i32_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i32 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, i32::from_le_bytes);
     }

     <span class="doccomment">/// Gets a signed 32 bit integer from `self` in native-endian byte order.
     ///
     /// The current position is advanced by 4.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf: &amp;[u8] = match cfg!(target_endian = &quot;big&quot;) {
     ///     true =&gt; b&quot;\x08\x09\xA0\xA1 hello&quot;,
     ///     false =&gt; b&quot;\xA1\xA0\x09\x08 hello&quot;,
     /// };
     /// assert_eq!(0x0809A0A1, buf.get_i32_ne());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_i32_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i32 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, i32::from_ne_bytes);
     }

     <span class="doccomment">/// Gets an unsigned 64 bit integer from `self` in big-endian byte order.
     ///
     /// The current position is advanced by 8.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x01\x02\x03\x04\x05\x06\x07\x08 hello&quot;[..];
     /// assert_eq!(0x0102030405060708, buf.get_u64());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_u64(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u64 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, u64::from_be_bytes);
     }

     <span class="doccomment">/// Gets an unsigned 64 bit integer from `self` in little-endian byte order.
     ///
     /// The current position is advanced by 8.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x08\x07\x06\x05\x04\x03\x02\x01 hello&quot;[..];
     /// assert_eq!(0x0102030405060708, buf.get_u64_le());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_u64_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u64 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, u64::from_le_bytes);
     }

     <span class="doccomment">/// Gets an unsigned 64 bit integer from `self` in native-endian byte order.
     ///
     /// The current position is advanced by 8.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf: &amp;[u8] = match cfg!(target_endian = &quot;big&quot;) {
     ///     true =&gt; b&quot;\x01\x02\x03\x04\x05\x06\x07\x08 hello&quot;,
     ///     false =&gt; b&quot;\x08\x07\x06\x05\x04\x03\x02\x01 hello&quot;,
     /// };
     /// assert_eq!(0x0102030405060708, buf.get_u64_ne());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_u64_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u64 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, u64::from_ne_bytes);
     }

     <span class="doccomment">/// Gets a signed 64 bit integer from `self` in big-endian byte order.
     ///
     /// The current position is advanced by 8.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x01\x02\x03\x04\x05\x06\x07\x08 hello&quot;[..];
     /// assert_eq!(0x0102030405060708, buf.get_i64());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_i64(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i64 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, i64::from_be_bytes);
     }

     <span class="doccomment">/// Gets a signed 64 bit integer from `self` in little-endian byte order.
     ///
     /// The current position is advanced by 8.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x08\x07\x06\x05\x04\x03\x02\x01 hello&quot;[..];
     /// assert_eq!(0x0102030405060708, buf.get_i64_le());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_i64_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i64 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, i64::from_le_bytes);
     }

     <span class="doccomment">/// Gets a signed 64 bit integer from `self` in native-endian byte order.
     ///
     /// The current position is advanced by 8.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf: &amp;[u8] = match cfg!(target_endian = &quot;big&quot;) {
     ///     true =&gt; b&quot;\x01\x02\x03\x04\x05\x06\x07\x08 hello&quot;,
     ///     false =&gt; b&quot;\x08\x07\x06\x05\x04\x03\x02\x01 hello&quot;,
     /// };
     /// assert_eq!(0x0102030405060708, buf.get_i64_ne());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_i64_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i64 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, i64::from_ne_bytes);
     }

     <span class="doccomment">/// Gets an unsigned 128 bit integer from `self` in big-endian byte order.
     ///
     /// The current position is advanced by 16.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x01\x02\x03\x04\x05\x06\x07\x08\x09\x10\x11\x12\x13\x14\x15\x16 hello&quot;[..];
     /// assert_eq!(0x01020304050607080910111213141516, buf.get_u128());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_u128(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u128 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, u128::from_be_bytes);
     }

     <span class="doccomment">/// Gets an unsigned 128 bit integer from `self` in little-endian byte order.
     ///
     /// The current position is advanced by 16.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x16\x15\x14\x13\x12\x11\x10\x09\x08\x07\x06\x05\x04\x03\x02\x01 hello&quot;[..];
     /// assert_eq!(0x01020304050607080910111213141516, buf.get_u128_le());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_u128_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u128 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, u128::from_le_bytes);
     }

     <span class="doccomment">/// Gets an unsigned 128 bit integer from `self` in native-endian byte order.
     ///
     /// The current position is advanced by 16.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf: &amp;[u8] = match cfg!(target_endian = &quot;big&quot;) {
     ///     true =&gt; b&quot;\x01\x02\x03\x04\x05\x06\x07\x08\x09\x10\x11\x12\x13\x14\x15\x16 hello&quot;,
     ///     false =&gt; b&quot;\x16\x15\x14\x13\x12\x11\x10\x09\x08\x07\x06\x05\x04\x03\x02\x01 hello&quot;,
     /// };
     /// assert_eq!(0x01020304050607080910111213141516, buf.get_u128_ne());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_u128_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u128 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, u128::from_ne_bytes);
     }

     <span class="doccomment">/// Gets a signed 128 bit integer from `self` in big-endian byte order.
     ///
     /// The current position is advanced by 16.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x01\x02\x03\x04\x05\x06\x07\x08\x09\x10\x11\x12\x13\x14\x15\x16 hello&quot;[..];
     /// assert_eq!(0x01020304050607080910111213141516, buf.get_i128());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_i128(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i128 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, i128::from_be_bytes);
     }

     <span class="doccomment">/// Gets a signed 128 bit integer from `self` in little-endian byte order.
     ///
     /// The current position is advanced by 16.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x16\x15\x14\x13\x12\x11\x10\x09\x08\x07\x06\x05\x04\x03\x02\x01 hello&quot;[..];
     /// assert_eq!(0x01020304050607080910111213141516, buf.get_i128_le());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_i128_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i128 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, i128::from_le_bytes);
     }

     <span class="doccomment">/// Gets a signed 128 bit integer from `self` in native-endian byte order.
     ///
     /// The current position is advanced by 16.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf: &amp;[u8] = match cfg!(target_endian = &quot;big&quot;) {
     ///     true =&gt; b&quot;\x01\x02\x03\x04\x05\x06\x07\x08\x09\x10\x11\x12\x13\x14\x15\x16 hello&quot;,
     ///     false =&gt; b&quot;\x16\x15\x14\x13\x12\x11\x10\x09\x08\x07\x06\x05\x04\x03\x02\x01 hello&quot;,
     /// };
     /// assert_eq!(0x01020304050607080910111213141516, buf.get_i128_ne());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_i128_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i128 {
         <span class="macro">buf_get_impl!</span>(<span class="self">self</span>, i128::from_ne_bytes);
     }

     <span class="doccomment">/// Gets an unsigned n-byte integer from `self` in big-endian byte order.
     ///
     /// The current position is advanced by `nbytes`.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x01\x02\x03 hello&quot;[..];
     /// assert_eq!(0x010203, buf.get_uint(3));
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_uint(<span class="kw-2">&amp;mut </span><span class="self">self</span>, nbytes: usize) -&gt; u64 {
         <span class="macro">buf_get_impl!</span>(be =&gt; <span class="self">self</span>, u64, nbytes);
     }

     <span class="doccomment">/// Gets an unsigned n-byte integer from `self` in little-endian byte order.
     ///
     /// The current position is advanced by `nbytes`.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x03\x02\x01 hello&quot;[..];
     /// assert_eq!(0x010203, buf.get_uint_le(3));
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_uint_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>, nbytes: usize) -&gt; u64 {
         <span class="macro">buf_get_impl!</span>(le =&gt; <span class="self">self</span>, u64, nbytes);
     }

     <span class="doccomment">/// Gets an unsigned n-byte integer from `self` in native-endian byte order.
     ///
     /// The current position is advanced by `nbytes`.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf: &amp;[u8] = match cfg!(target_endian = &quot;big&quot;) {
     ///     true =&gt; b&quot;\x01\x02\x03 hello&quot;,
     ///     false =&gt; b&quot;\x03\x02\x01 hello&quot;,
     /// };
     /// assert_eq!(0x010203, buf.get_uint_ne(3));
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_uint_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>, nbytes: usize) -&gt; u64 {
         <span class="kw">if </span><span class="macro">cfg!</span>(target_endian = <span class="string">&quot;big&quot;</span>) {
             <span class="self">self</span>.get_uint(nbytes)
         } <span class="kw">else </span>{
             <span class="self">self</span>.get_uint_le(nbytes)
         }
     }

     <span class="doccomment">/// Gets a signed n-byte integer from `self` in big-endian byte order.
     ///
     /// The current position is advanced by `nbytes`.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x01\x02\x03 hello&quot;[..];
     /// assert_eq!(0x010203, buf.get_int(3));
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_int(<span class="kw-2">&amp;mut </span><span class="self">self</span>, nbytes: usize) -&gt; i64 {
         <span class="macro">buf_get_impl!</span>(be =&gt; <span class="self">self</span>, i64, nbytes);
     }

     <span class="doccomment">/// Gets a signed n-byte integer from `self` in little-endian byte order.
     ///
     /// The current position is advanced by `nbytes`.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf = &amp;b&quot;\x03\x02\x01 hello&quot;[..];
     /// assert_eq!(0x010203, buf.get_int_le(3));
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_int_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>, nbytes: usize) -&gt; i64 {
         <span class="macro">buf_get_impl!</span>(le =&gt; <span class="self">self</span>, i64, nbytes);
     }

     <span class="doccomment">/// Gets a signed n-byte integer from `self` in native-endian byte order.
     ///
     /// The current position is advanced by `nbytes`.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf: &amp;[u8] = match cfg!(target_endian = &quot;big&quot;) {
     ///     true =&gt; b&quot;\x01\x02\x03 hello&quot;,
     ///     false =&gt; b&quot;\x03\x02\x01 hello&quot;,
     /// };
     /// assert_eq!(0x010203, buf.get_int_ne(3));
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_int_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>, nbytes: usize) -&gt; i64 {
         <span class="kw">if </span><span class="macro">cfg!</span>(target_endian = <span class="string">&quot;big&quot;</span>) {
             <span class="self">self</span>.get_int(nbytes)
         } <span class="kw">else </span>{
             <span class="self">self</span>.get_int_le(nbytes)
         }
     }

     <span class="doccomment">/// 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;
     ///
     /// let mut buf = &amp;b&quot;\x3F\x99\x99\x9A hello&quot;[..];
     /// assert_eq!(1.2f32, buf.get_f32());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_f32(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; f32 {
         f32::from_bits(<span class="self">Self</span>::get_u32(<span class="self">self</span>))
     }

     <span class="doccomment">/// 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;
     ///
     /// let mut buf = &amp;b&quot;\x9A\x99\x99\x3F hello&quot;[..];
     /// assert_eq!(1.2f32, buf.get_f32_le());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_f32_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; f32 {
         f32::from_bits(<span class="self">Self</span>::get_u32_le(<span class="self">self</span>))
     }

     <span class="doccomment">/// Gets an IEEE754 single-precision (4 bytes) floating point number from
     /// `self` in native-endian byte order.
     ///
     /// The current position is advanced by 4.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf: &amp;[u8] = match cfg!(target_endian = &quot;big&quot;) {
     ///     true =&gt; b&quot;\x3F\x99\x99\x9A hello&quot;,
     ///     false =&gt; b&quot;\x9A\x99\x99\x3F hello&quot;,
     /// };
     /// assert_eq!(1.2f32, buf.get_f32_ne());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_f32_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; f32 {
         f32::from_bits(<span class="self">Self</span>::get_u32_ne(<span class="self">self</span>))
     }

     <span class="doccomment">/// 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;
     ///
     /// let mut buf = &amp;b&quot;\x3F\xF3\x33\x33\x33\x33\x33\x33 hello&quot;[..];
     /// assert_eq!(1.2f64, buf.get_f64());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_f64(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; f64 {
         f64::from_bits(<span class="self">Self</span>::get_u64(<span class="self">self</span>))
     }

     <span class="doccomment">/// 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;
     ///
     /// let mut buf = &amp;b&quot;\x33\x33\x33\x33\x33\x33\xF3\x3F hello&quot;[..];
     /// assert_eq!(1.2f64, buf.get_f64_le());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_f64_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; f64 {
         f64::from_bits(<span class="self">Self</span>::get_u64_le(<span class="self">self</span>))
     }

     <span class="doccomment">/// Gets an IEEE754 double-precision (8 bytes) floating point number from
     /// `self` in native-endian byte order.
     ///
     /// The current position is advanced by 8.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut buf: &amp;[u8] = match cfg!(target_endian = &quot;big&quot;) {
     ///     true =&gt; b&quot;\x3F\xF3\x33\x33\x33\x33\x33\x33 hello&quot;,
     ///     false =&gt; b&quot;\x33\x33\x33\x33\x33\x33\xF3\x3F hello&quot;,
     /// };
     /// assert_eq!(1.2f64, buf.get_f64_ne());
     /// ```
     ///
     /// # Panics
     ///
     /// This function panics if there is not enough remaining data in `self`.
     </span><span class="kw">fn </span>get_f64_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; f64 {
         f64::from_bits(<span class="self">Self</span>::get_u64_ne(<span class="self">self</span>))
     }

     <span class="doccomment">/// Consumes `len` bytes inside self and returns new instance of `Bytes`
     /// with this data.
     ///
     /// This function may be optimized by the underlying type to avoid actual
     /// copies. For example, `Bytes` implementation will do a shallow copy
     /// (ref-count increment).
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let bytes = (&amp;b&quot;hello world&quot;[..]).copy_to_bytes(5);
     /// assert_eq!(&amp;bytes[..], &amp;b&quot;hello&quot;[..]);
     /// ```
     </span><span class="kw">fn </span>copy_to_bytes(<span class="kw-2">&amp;mut </span><span class="self">self</span>, len: usize) -&gt; <span class="kw">crate</span>::Bytes {
         <span class="kw">use </span><span class="kw">super</span>::BufMut;

         <span class="macro">assert!</span>(len &lt;= <span class="self">self</span>.remaining(), <span class="string">&quot;`len` greater than remaining&quot;</span>);

         <span class="kw">let </span><span class="kw-2">mut </span>ret = <span class="kw">crate</span>::BytesMut::with_capacity(len);
         ret.put(<span class="self">self</span>.take(len));
         ret.freeze()
     }

     <span class="doccomment">/// Creates an adaptor which will read at most `limit` bytes from `self`.
     ///
     /// This function returns a new instance of `Buf` which will read at most
     /// `limit` bytes.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::{Buf, BufMut};
     ///
     /// let mut buf = b&quot;hello world&quot;[..].take(5);
     /// let mut dst = vec![];
     ///
     /// dst.put(&amp;mut buf);
     /// assert_eq!(dst, b&quot;hello&quot;);
     ///
     /// let mut buf = buf.into_inner();
     /// dst.clear();
     /// dst.put(&amp;mut buf);
     /// assert_eq!(dst, b&quot; world&quot;);
     /// ```
     </span><span class="kw">fn </span>take(<span class="self">self</span>, limit: usize) -&gt; Take&lt;<span class="self">Self</span>&gt;
     <span class="kw">where
         </span><span class="self">Self</span>: Sized,
     {
         take::new(<span class="self">self</span>, limit)
     }

     <span class="doccomment">/// Creates an adaptor which will chain this buffer with another.
     ///
     /// The returned `Buf` instance will first consume all bytes from `self`.
     /// Afterwards the output is equivalent to the output of next.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::Buf;
     ///
     /// let mut chain = b&quot;hello &quot;[..].chain(&amp;b&quot;world&quot;[..]);
     ///
     /// let full = chain.copy_to_bytes(11);
     /// assert_eq!(full.chunk(), b&quot;hello world&quot;);
     /// ```
     </span><span class="kw">fn </span>chain&lt;U: Buf&gt;(<span class="self">self</span>, next: U) -&gt; Chain&lt;<span class="self">Self</span>, U&gt;
     <span class="kw">where
         </span><span class="self">Self</span>: Sized,
     {
         Chain::new(<span class="self">self</span>, next)
     }

     <span class="doccomment">/// Creates an adaptor which implements the `Read` trait for `self`.
     ///
     /// This function returns a new value which implements `Read` by adapting
     /// the `Read` trait functions to the `Buf` trait functions. Given that
     /// `Buf` operations are infallible, none of the `Read` functions will
     /// return with `Err`.
     ///
     /// # Examples
     ///
     /// ```
     /// use bytes::{Bytes, Buf};
     /// use std::io::Read;
     ///
     /// let buf = Bytes::from(&quot;hello world&quot;);
     ///
     /// let mut reader = buf.reader();
     /// let mut dst = [0; 1024];
     ///
     /// let num = reader.read(&amp;mut dst).unwrap();
     ///
     /// assert_eq!(11, num);
     /// assert_eq!(&amp;dst[..11], &amp;b&quot;hello world&quot;[..]);
     /// ```
     </span><span class="attribute">#[cfg(feature = <span class="string">&quot;std&quot;</span>)]
     #[cfg_attr(docsrs, doc(cfg(feature = <span class="string">&quot;std&quot;</span>)))]
     </span><span class="kw">fn </span>reader(<span class="self">self</span>) -&gt; Reader&lt;<span class="self">Self</span>&gt;
     <span class="kw">where
         </span><span class="self">Self</span>: Sized,
     {
         reader::new(<span class="self">self</span>)
     }
 }

 <span class="macro">macro_rules! </span>deref_forward_buf {
     () =&gt; {
         <span class="kw">fn </span>remaining(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
             (<span class="kw-2">**</span><span class="self">self</span>).remaining()
         }

         <span class="kw">fn </span>chunk(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;</span>[u8] {
             (<span class="kw-2">**</span><span class="self">self</span>).chunk()
         }

         <span class="attribute">#[cfg(feature = <span class="string">&quot;std&quot;</span>)]
         </span><span class="kw">fn </span>chunks_vectored&lt;<span class="lifetime">&#39;b</span>&gt;(<span class="kw-2">&amp;</span><span class="lifetime">&#39;b </span><span class="self">self</span>, dst: <span class="kw-2">&amp;mut </span>[IoSlice&lt;<span class="lifetime">&#39;b</span>&gt;]) -&gt; usize {
             (<span class="kw-2">**</span><span class="self">self</span>).chunks_vectored(dst)
         }

         <span class="kw">fn </span>advance(<span class="kw-2">&amp;mut </span><span class="self">self</span>, cnt: usize) {
             (<span class="kw-2">**</span><span class="self">self</span>).advance(cnt)
         }

         <span class="kw">fn </span>has_remaining(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
             (<span class="kw-2">**</span><span class="self">self</span>).has_remaining()
         }

         <span class="kw">fn </span>copy_to_slice(<span class="kw-2">&amp;mut </span><span class="self">self</span>, dst: <span class="kw-2">&amp;mut </span>[u8]) {
             (<span class="kw-2">**</span><span class="self">self</span>).copy_to_slice(dst)
         }

         <span class="kw">fn </span>get_u8(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u8 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_u8()
         }

         <span class="kw">fn </span>get_i8(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i8 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_i8()
         }

         <span class="kw">fn </span>get_u16(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u16 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_u16()
         }

         <span class="kw">fn </span>get_u16_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u16 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_u16_le()
         }

         <span class="kw">fn </span>get_u16_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u16 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_u16_ne()
         }

         <span class="kw">fn </span>get_i16(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i16 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_i16()
         }

         <span class="kw">fn </span>get_i16_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i16 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_i16_le()
         }

         <span class="kw">fn </span>get_i16_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i16 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_i16_ne()
         }

         <span class="kw">fn </span>get_u32(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u32 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_u32()
         }

         <span class="kw">fn </span>get_u32_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u32 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_u32_le()
         }

         <span class="kw">fn </span>get_u32_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u32 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_u32_ne()
         }

         <span class="kw">fn </span>get_i32(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i32 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_i32()
         }

         <span class="kw">fn </span>get_i32_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i32 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_i32_le()
         }

         <span class="kw">fn </span>get_i32_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i32 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_i32_ne()
         }

         <span class="kw">fn </span>get_u64(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u64 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_u64()
         }

         <span class="kw">fn </span>get_u64_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u64 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_u64_le()
         }

         <span class="kw">fn </span>get_u64_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; u64 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_u64_ne()
         }

         <span class="kw">fn </span>get_i64(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i64 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_i64()
         }

         <span class="kw">fn </span>get_i64_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i64 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_i64_le()
         }

         <span class="kw">fn </span>get_i64_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; i64 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_i64_ne()
         }

         <span class="kw">fn </span>get_uint(<span class="kw-2">&amp;mut </span><span class="self">self</span>, nbytes: usize) -&gt; u64 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_uint(nbytes)
         }

         <span class="kw">fn </span>get_uint_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>, nbytes: usize) -&gt; u64 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_uint_le(nbytes)
         }

         <span class="kw">fn </span>get_uint_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>, nbytes: usize) -&gt; u64 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_uint_ne(nbytes)
         }

         <span class="kw">fn </span>get_int(<span class="kw-2">&amp;mut </span><span class="self">self</span>, nbytes: usize) -&gt; i64 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_int(nbytes)
         }

         <span class="kw">fn </span>get_int_le(<span class="kw-2">&amp;mut </span><span class="self">self</span>, nbytes: usize) -&gt; i64 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_int_le(nbytes)
         }

         <span class="kw">fn </span>get_int_ne(<span class="kw-2">&amp;mut </span><span class="self">self</span>, nbytes: usize) -&gt; i64 {
             (<span class="kw-2">**</span><span class="self">self</span>).get_int_ne(nbytes)
         }

         <span class="kw">fn </span>copy_to_bytes(<span class="kw-2">&amp;mut </span><span class="self">self</span>, len: usize) -&gt; <span class="kw">crate</span>::Bytes {
             (<span class="kw-2">**</span><span class="self">self</span>).copy_to_bytes(len)
         }
     };
 }

 <span class="kw">impl</span>&lt;T: Buf + <span class="question-mark">?</span>Sized&gt; Buf <span class="kw">for </span><span class="kw-2">&amp;mut </span>T {
     <span class="macro">deref_forward_buf!</span>();
 }

 <span class="kw">impl</span>&lt;T: Buf + <span class="question-mark">?</span>Sized&gt; Buf <span class="kw">for </span>Box&lt;T&gt; {
     <span class="macro">deref_forward_buf!</span>();
 }

 <span class="kw">impl </span>Buf <span class="kw">for </span><span class="kw-2">&amp;</span>[u8] {
     <span class="attribute">#[inline]
     </span><span class="kw">fn </span>remaining(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
         <span class="self">self</span>.len()
     }

     <span class="attribute">#[inline]
     </span><span class="kw">fn </span>chunk(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;</span>[u8] {
         <span class="self">self
     </span>}

     <span class="attribute">#[inline]
     </span><span class="kw">fn </span>advance(<span class="kw-2">&amp;mut </span><span class="self">self</span>, cnt: usize) {
         <span class="kw-2">*</span><span class="self">self </span>= <span class="kw-2">&amp;</span><span class="self">self</span>[cnt..];
     }
 }

 <span class="attribute">#[cfg(feature = <span class="string">&quot;std&quot;</span>)]
 </span><span class="kw">impl</span>&lt;T: AsRef&lt;[u8]&gt;&gt; Buf <span class="kw">for </span>std::io::Cursor&lt;T&gt; {
     <span class="kw">fn </span>remaining(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
         <span class="kw">let </span>len = <span class="self">self</span>.get_ref().as_ref().len();
         <span class="kw">let </span>pos = <span class="self">self</span>.position();

         <span class="kw">if </span>pos &gt;= len <span class="kw">as </span>u64 {
             <span class="kw">return </span><span class="number">0</span>;
         }

         len - pos <span class="kw">as </span>usize
     }

     <span class="kw">fn </span>chunk(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;</span>[u8] {
         <span class="kw">let </span>len = <span class="self">self</span>.get_ref().as_ref().len();
         <span class="kw">let </span>pos = <span class="self">self</span>.position();

         <span class="kw">if </span>pos &gt;= len <span class="kw">as </span>u64 {
             <span class="kw">return </span><span class="kw-2">&amp;</span>[];
         }

         <span class="kw-2">&amp;</span><span class="self">self</span>.get_ref().as_ref()[pos <span class="kw">as </span>usize..]
     }

     <span class="kw">fn </span>advance(<span class="kw-2">&amp;mut </span><span class="self">self</span>, cnt: usize) {
         <span class="kw">let </span>pos = (<span class="self">self</span>.position() <span class="kw">as </span>usize)
             .checked_add(cnt)
             .expect(<span class="string">&quot;overflow&quot;</span>);

         <span class="macro">assert!</span>(pos &lt;= <span class="self">self</span>.get_ref().as_ref().len());
         <span class="self">self</span>.set_position(pos <span class="kw">as </span>u64);
     }
 }

 <span class="comment">// The existence of this function makes the compiler catch if the Buf
 // trait is &quot;object-safe&quot; or not.
 </span><span class="kw">fn </span>_assert_trait_object(_b: <span class="kw-2">&amp;</span><span class="kw">dyn </span>Buf) {}
 </code></pre></div>
 </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="bytes" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html>