1
0
mirror of https://github.com/actix/actix-website synced 2025-03-15 12:43:07 +01:00
2018-10-10 08:38:33 -07:00

307 lines
25 KiB
HTML
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<!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 to the Rust file `src/ws/mask.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>mask.rs.html -- source</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><script src="../../../storage.js"></script></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press S to search, ? for more options…" type="search"><a id="settings-menu" href="../../../settings.html"><img src="../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
<span id="2"> 2</span>
<span id="3"> 3</span>
<span id="4"> 4</span>
<span id="5"> 5</span>
<span id="6"> 6</span>
<span id="7"> 7</span>
<span id="8"> 8</span>
<span id="9"> 9</span>
<span id="10"> 10</span>
<span id="11"> 11</span>
<span id="12"> 12</span>
<span id="13"> 13</span>
<span id="14"> 14</span>
<span id="15"> 15</span>
<span id="16"> 16</span>
<span id="17"> 17</span>
<span id="18"> 18</span>
<span id="19"> 19</span>
<span id="20"> 20</span>
<span id="21"> 21</span>
<span id="22"> 22</span>
<span id="23"> 23</span>
<span id="24"> 24</span>
<span id="25"> 25</span>
<span id="26"> 26</span>
<span id="27"> 27</span>
<span id="28"> 28</span>
<span id="29"> 29</span>
<span id="30"> 30</span>
<span id="31"> 31</span>
<span id="32"> 32</span>
<span id="33"> 33</span>
<span id="34"> 34</span>
<span id="35"> 35</span>
<span id="36"> 36</span>
<span id="37"> 37</span>
<span id="38"> 38</span>
<span id="39"> 39</span>
<span id="40"> 40</span>
<span id="41"> 41</span>
<span id="42"> 42</span>
<span id="43"> 43</span>
<span id="44"> 44</span>
<span id="45"> 45</span>
<span id="46"> 46</span>
<span id="47"> 47</span>
<span id="48"> 48</span>
<span id="49"> 49</span>
<span id="50"> 50</span>
<span id="51"> 51</span>
<span id="52"> 52</span>
<span id="53"> 53</span>
<span id="54"> 54</span>
<span id="55"> 55</span>
<span id="56"> 56</span>
<span id="57"> 57</span>
<span id="58"> 58</span>
<span id="59"> 59</span>
<span id="60"> 60</span>
<span id="61"> 61</span>
<span id="62"> 62</span>
<span id="63"> 63</span>
<span id="64"> 64</span>
<span id="65"> 65</span>
<span id="66"> 66</span>
<span id="67"> 67</span>
<span id="68"> 68</span>
<span id="69"> 69</span>
<span id="70"> 70</span>
<span id="71"> 71</span>
<span id="72"> 72</span>
<span id="73"> 73</span>
<span id="74"> 74</span>
<span id="75"> 75</span>
<span id="76"> 76</span>
<span id="77"> 77</span>
<span id="78"> 78</span>
<span id="79"> 79</span>
<span id="80"> 80</span>
<span id="81"> 81</span>
<span id="82"> 82</span>
<span id="83"> 83</span>
<span id="84"> 84</span>
<span id="85"> 85</span>
<span id="86"> 86</span>
<span id="87"> 87</span>
<span id="88"> 88</span>
<span id="89"> 89</span>
<span id="90"> 90</span>
<span id="91"> 91</span>
<span id="92"> 92</span>
<span id="93"> 93</span>
<span id="94"> 94</span>
<span id="95"> 95</span>
<span id="96"> 96</span>
<span id="97"> 97</span>
<span id="98"> 98</span>
<span id="99"> 99</span>
<span id="100">100</span>
<span id="101">101</span>
<span id="102">102</span>
<span id="103">103</span>
<span id="104">104</span>
<span id="105">105</span>
<span id="106">106</span>
<span id="107">107</span>
<span id="108">108</span>
<span id="109">109</span>
<span id="110">110</span>
<span id="111">111</span>
<span id="112">112</span>
<span id="113">113</span>
<span id="114">114</span>
<span id="115">115</span>
<span id="116">116</span>
<span id="117">117</span>
<span id="118">118</span>
<span id="119">119</span>
<span id="120">120</span>
<span id="121">121</span>
<span id="122">122</span>
<span id="123">123</span>
<span id="124">124</span>
<span id="125">125</span>
<span id="126">126</span>
<span id="127">127</span>
<span id="128">128</span>
<span id="129">129</span>
<span id="130">130</span>
<span id="131">131</span>
<span id="132">132</span>
<span id="133">133</span>
<span id="134">134</span>
<span id="135">135</span>
<span id="136">136</span>
<span id="137">137</span>
<span id="138">138</span>
<span id="139">139</span>
<span id="140">140</span>
<span id="141">141</span>
<span id="142">142</span>
<span id="143">143</span>
<span id="144">144</span>
<span id="145">145</span>
<span id="146">146</span>
<span id="147">147</span>
<span id="148">148</span>
<span id="149">149</span>
<span id="150">150</span>
<span id="151">151</span>
<span id="152">152</span>
</pre><pre class="rust ">
<span class="doccomment">//! This is code from [Tungstenite project](https://github.com/snapview/tungstenite-rs)</span>
<span class="attribute">#![<span class="ident">cfg_attr</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">&quot;cargo-clippy&quot;</span>, <span class="ident">allow</span>(<span class="ident">clippy</span>::<span class="ident">cast_ptr_alignment</span>))]</span>
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">ptr</span>::<span class="ident">copy_nonoverlapping</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">slice</span>;
<span class="comment">// Holds a slice guaranteed to be shorter than 8 bytes</span>
<span class="kw">struct</span> <span class="ident">ShortSlice</span><span class="op">&lt;</span><span class="lifetime">&#39;a</span><span class="op">&gt;</span>(<span class="kw-2">&amp;</span><span class="lifetime">&#39;a</span> <span class="kw-2">mut</span> [<span class="ident">u8</span>]);
<span class="kw">impl</span><span class="op">&lt;</span><span class="lifetime">&#39;a</span><span class="op">&gt;</span> <span class="ident">ShortSlice</span><span class="op">&lt;</span><span class="lifetime">&#39;a</span><span class="op">&gt;</span> {
<span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">slice</span>: <span class="kw-2">&amp;</span><span class="lifetime">&#39;a</span> <span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-&gt;</span> <span class="self">Self</span> {
<span class="comment">// Sanity check for debug builds</span>
<span class="macro">debug_assert</span><span class="macro">!</span>(<span class="ident">slice</span>.<span class="ident">len</span>() <span class="op">&lt;</span> <span class="number">8</span>);
<span class="ident">ShortSlice</span>(<span class="ident">slice</span>)
}
<span class="kw">fn</span> <span class="ident">len</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">usize</span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">len</span>()
}
}
<span class="doccomment">/// Faster version of `apply_mask()` which operates on 8-byte blocks.</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">&quot;cargo-clippy&quot;</span>, <span class="ident">allow</span>(<span class="ident">clippy</span>::<span class="ident">cast_lossless</span>))]</span>
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">apply_mask</span>(<span class="ident">buf</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [<span class="ident">u8</span>], <span class="ident">mask_u32</span>: <span class="ident">u32</span>) {
<span class="comment">// Extend the mask to 64 bits</span>
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">mask_u64</span> <span class="op">=</span> ((<span class="ident">mask_u32</span> <span class="kw">as</span> <span class="ident">u64</span>) <span class="op">&lt;&lt;</span> <span class="number">32</span>) <span class="op">|</span> (<span class="ident">mask_u32</span> <span class="kw">as</span> <span class="ident">u64</span>);
<span class="comment">// Split the buffer into three segments</span>
<span class="kw">let</span> (<span class="ident">head</span>, <span class="ident">mid</span>, <span class="ident">tail</span>) <span class="op">=</span> <span class="ident">align_buf</span>(<span class="ident">buf</span>);
<span class="comment">// Initial unaligned segment</span>
<span class="kw">let</span> <span class="ident">head_len</span> <span class="op">=</span> <span class="ident">head</span>.<span class="ident">len</span>();
<span class="kw">if</span> <span class="ident">head_len</span> <span class="op">&gt;</span> <span class="number">0</span> {
<span class="ident">xor_short</span>(<span class="ident">head</span>, <span class="ident">mask_u64</span>);
<span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_endian</span> <span class="op">=</span> <span class="string">&quot;big&quot;</span>) {
<span class="ident">mask_u64</span> <span class="op">=</span> <span class="ident">mask_u64</span>.<span class="ident">rotate_left</span>(<span class="number">8</span> <span class="op">*</span> <span class="ident">head_len</span> <span class="kw">as</span> <span class="ident">u32</span>);
} <span class="kw">else</span> {
<span class="ident">mask_u64</span> <span class="op">=</span> <span class="ident">mask_u64</span>.<span class="ident">rotate_right</span>(<span class="number">8</span> <span class="op">*</span> <span class="ident">head_len</span> <span class="kw">as</span> <span class="ident">u32</span>);
}
}
<span class="comment">// Aligned segment</span>
<span class="kw">for</span> <span class="ident">v</span> <span class="kw">in</span> <span class="ident">mid</span> {
<span class="kw-2">*</span><span class="ident">v</span> <span class="op">^=</span> <span class="ident">mask_u64</span>;
}
<span class="comment">// Final unaligned segment</span>
<span class="kw">if</span> <span class="ident">tail</span>.<span class="ident">len</span>() <span class="op">&gt;</span> <span class="number">0</span> {
<span class="ident">xor_short</span>(<span class="ident">tail</span>, <span class="ident">mask_u64</span>);
}
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="comment">// TODO: copy_nonoverlapping here compiles to call memcpy. While it is not so</span>
<span class="comment">// inefficient, it could be done better. The compiler does not understand that</span>
<span class="comment">// a `ShortSlice` must be smaller than a u64.</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(
<span class="ident">feature</span> <span class="op">=</span> <span class="string">&quot;cargo-clippy&quot;</span>,
<span class="ident">allow</span>(<span class="ident">clippy</span>::<span class="ident">needless_pass_by_value</span>)
)]</span>
<span class="kw">fn</span> <span class="ident">xor_short</span>(<span class="ident">buf</span>: <span class="ident">ShortSlice</span>, <span class="ident">mask</span>: <span class="ident">u64</span>) {
<span class="comment">// Unsafe: we know that a `ShortSlice` fits in a u64</span>
<span class="kw">unsafe</span> {
<span class="kw">let</span> (<span class="ident">ptr</span>, <span class="ident">len</span>) <span class="op">=</span> (<span class="ident">buf</span>.<span class="number">0</span>.<span class="ident">as_mut_ptr</span>(), <span class="ident">buf</span>.<span class="number">0</span>.<span class="ident">len</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">b</span>: <span class="ident">u64</span> <span class="op">=</span> <span class="number">0</span>;
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">trivial_casts</span>)]</span>
<span class="ident">copy_nonoverlapping</span>(<span class="ident">ptr</span>, <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">b</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="kw">_</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">u8</span>, <span class="ident">len</span>);
<span class="ident">b</span> <span class="op">^=</span> <span class="ident">mask</span>;
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">trivial_casts</span>)]</span>
<span class="ident">copy_nonoverlapping</span>(<span class="kw-2">&amp;</span><span class="ident">b</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="kw">_</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">u8</span>, <span class="ident">ptr</span>, <span class="ident">len</span>);
}
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="comment">// Unsafe: caller must ensure the buffer has the correct size and alignment</span>
<span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">cast_slice</span>(<span class="ident">buf</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-&gt;</span> <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [<span class="ident">u64</span>] {
<span class="comment">// Assert correct size and alignment in debug builds</span>
<span class="macro">debug_assert</span><span class="macro">!</span>(<span class="ident">buf</span>.<span class="ident">len</span>().<span class="ident">trailing_zeros</span>() <span class="op">&gt;=</span> <span class="number">3</span>);
<span class="macro">debug_assert</span><span class="macro">!</span>((<span class="ident">buf</span>.<span class="ident">as_ptr</span>() <span class="kw">as</span> <span class="ident">usize</span>).<span class="ident">trailing_zeros</span>() <span class="op">&gt;=</span> <span class="number">3</span>);
<span class="ident">slice</span>::<span class="ident">from_raw_parts_mut</span>(<span class="ident">buf</span>.<span class="ident">as_mut_ptr</span>() <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">u64</span>, <span class="ident">buf</span>.<span class="ident">len</span>() <span class="op">&gt;&gt;</span> <span class="number">3</span>)
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="comment">// Splits a slice into three parts: an unaligned short head and tail, plus an aligned</span>
<span class="comment">// u64 mid section.</span>
<span class="kw">fn</span> <span class="ident">align_buf</span>(<span class="ident">buf</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-&gt;</span> (<span class="ident">ShortSlice</span>, <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [<span class="ident">u64</span>], <span class="ident">ShortSlice</span>) {
<span class="kw">let</span> <span class="ident">start_ptr</span> <span class="op">=</span> <span class="ident">buf</span>.<span class="ident">as_ptr</span>() <span class="kw">as</span> <span class="ident">usize</span>;
<span class="kw">let</span> <span class="ident">end_ptr</span> <span class="op">=</span> <span class="ident">start_ptr</span> <span class="op">+</span> <span class="ident">buf</span>.<span class="ident">len</span>();
<span class="comment">// Round *up* to next aligned boundary for start</span>
<span class="kw">let</span> <span class="ident">start_aligned</span> <span class="op">=</span> (<span class="ident">start_ptr</span> <span class="op">+</span> <span class="number">7</span>) <span class="op">&amp;</span> <span class="op">!</span><span class="number">0x7</span>;
<span class="comment">// Round *down* to last aligned boundary for end</span>
<span class="kw">let</span> <span class="ident">end_aligned</span> <span class="op">=</span> <span class="ident">end_ptr</span> <span class="op">&amp;</span> <span class="op">!</span><span class="number">0x7</span>;
<span class="kw">if</span> <span class="ident">end_aligned</span> <span class="op">&gt;=</span> <span class="ident">start_aligned</span> {
<span class="comment">// We have our three segments (head, mid, tail)</span>
<span class="kw">let</span> (<span class="ident">tmp</span>, <span class="ident">tail</span>) <span class="op">=</span> <span class="ident">buf</span>.<span class="ident">split_at_mut</span>(<span class="ident">end_aligned</span> <span class="op">-</span> <span class="ident">start_ptr</span>);
<span class="kw">let</span> (<span class="ident">head</span>, <span class="ident">mid</span>) <span class="op">=</span> <span class="ident">tmp</span>.<span class="ident">split_at_mut</span>(<span class="ident">start_aligned</span> <span class="op">-</span> <span class="ident">start_ptr</span>);
<span class="comment">// Unsafe: we know the middle section is correctly aligned, and the outer</span>
<span class="comment">// sections are smaller than 8 bytes</span>
<span class="kw">unsafe</span> { (<span class="ident">ShortSlice</span>::<span class="ident">new</span>(<span class="ident">head</span>), <span class="ident">cast_slice</span>(<span class="ident">mid</span>), <span class="ident">ShortSlice</span>(<span class="ident">tail</span>)) }
} <span class="kw">else</span> {
<span class="comment">// We didn&#39;t cross even one aligned boundary!</span>
<span class="comment">// Unsafe: The outer sections are smaller than 8 bytes</span>
<span class="kw">unsafe</span> { (<span class="ident">ShortSlice</span>::<span class="ident">new</span>(<span class="ident">buf</span>), <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [], <span class="ident">ShortSlice</span>::<span class="ident">new</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> [])) }
}
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
<span class="kw">mod</span> <span class="ident">tests</span> {
<span class="kw">use</span> <span class="kw">super</span>::<span class="ident">apply_mask</span>;
<span class="kw">use</span> <span class="ident">byteorder</span>::{<span class="ident">ByteOrder</span>, <span class="ident">LittleEndian</span>};
<span class="doccomment">/// A safe unoptimized mask application.</span>
<span class="kw">fn</span> <span class="ident">apply_mask_fallback</span>(<span class="ident">buf</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [<span class="ident">u8</span>], <span class="ident">mask</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>; <span class="number">4</span>]) {
<span class="kw">for</span> (<span class="ident">i</span>, <span class="ident">byte</span>) <span class="kw">in</span> <span class="ident">buf</span>.<span class="ident">iter_mut</span>().<span class="ident">enumerate</span>() {
<span class="kw-2">*</span><span class="ident">byte</span> <span class="op">^=</span> <span class="ident">mask</span>[<span class="ident">i</span> <span class="op">&amp;</span> <span class="number">3</span>];
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_apply_mask</span>() {
<span class="kw">let</span> <span class="ident">mask</span> <span class="op">=</span> [<span class="number">0x6d</span>, <span class="number">0xb6</span>, <span class="number">0xb2</span>, <span class="number">0x80</span>];
<span class="kw">let</span> <span class="ident">mask_u32</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="ident">LittleEndian</span>::<span class="ident">read_u32</span>(<span class="kw-2">&amp;</span><span class="ident">mask</span>);
<span class="kw">let</span> <span class="ident">unmasked</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[
<span class="number">0xf3</span>, <span class="number">0x00</span>, <span class="number">0x01</span>, <span class="number">0x02</span>, <span class="number">0x03</span>, <span class="number">0x80</span>, <span class="number">0x81</span>, <span class="number">0x82</span>, <span class="number">0xff</span>, <span class="number">0xfe</span>, <span class="number">0x00</span>, <span class="number">0x17</span>,
<span class="number">0x74</span>, <span class="number">0xf9</span>, <span class="number">0x12</span>, <span class="number">0x03</span>,
];
<span class="comment">// Check masking with proper alignment.</span>
{
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">masked</span> <span class="op">=</span> <span class="ident">unmasked</span>.<span class="ident">clone</span>();
<span class="ident">apply_mask_fallback</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">masked</span>, <span class="kw-2">&amp;</span><span class="ident">mask</span>);
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">masked_fast</span> <span class="op">=</span> <span class="ident">unmasked</span>.<span class="ident">clone</span>();
<span class="ident">apply_mask</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">masked_fast</span>, <span class="ident">mask_u32</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">masked</span>, <span class="ident">masked_fast</span>);
}
<span class="comment">// Check masking without alignment.</span>
{
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">masked</span> <span class="op">=</span> <span class="ident">unmasked</span>.<span class="ident">clone</span>();
<span class="ident">apply_mask_fallback</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">masked</span>[<span class="number">1</span>..], <span class="kw-2">&amp;</span><span class="ident">mask</span>);
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">masked_fast</span> <span class="op">=</span> <span class="ident">unmasked</span>.<span class="ident">clone</span>();
<span class="ident">apply_mask</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">masked_fast</span>[<span class="number">1</span>..], <span class="ident">mask_u32</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">masked</span>, <span class="ident">masked_fast</span>);
}
}
}
</pre>
</section><section id="search" class="content hidden"></section><section class="footer"></section><aside id="help" class="hidden"><div><h1 class="hidden">Help</h1><div class="shortcuts"><h2>Keyboard Shortcuts</h2><dl><dt><kbd>?</kbd></dt><dd>Show this help dialog</dd><dt><kbd>S</kbd></dt><dd>Focus the search field</dd><dt><kbd></kbd></dt><dd>Move up in search results</dd><dt><kbd></kbd></dt><dd>Move down in search results</dd><dt><kbd></kbd></dt><dd>Switch tab</dd><dt><kbd>&#9166;</kbd></dt><dd>Go to active search result</dd><dt><kbd>+</kbd></dt><dd>Expand all sections</dd><dt><kbd>-</kbd></dt><dd>Collapse all sections</dd></dl></div><div class="infos"><h2>Search Tricks</h2><p>Prefix searches with a type followed by a colon (e.g. <code>fn:</code>) to restrict the search to a given type.</p><p>Accepted types are: <code>fn</code>, <code>mod</code>, <code>struct</code>, <code>enum</code>, <code>trait</code>, <code>type</code>, <code>macro</code>, and <code>const</code>.</p><p>Search functions by type signature (e.g. <code>vec -> usize</code> or <code>* -> vec</code>)</p><p>Search multiple things at once by splitting your query with comma (e.g. <code>str,u8</code> or <code>String,struct:Vec,test</code>)</p></div></div></aside><script>window.rootPath = "../../../";window.currentCrate = "actix_web";</script><script src="../../../aliases.js"></script><script src="../../../main.js"></script><script defer src="../../../search-index.js"></script></body></html>