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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 `/home/newkirk/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/log-0.4.29/src/__private_api.rs`."><title>__private_api.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="log" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../../static.files/storage-e2aeef58.js"></script><script defer src="../../static.files/src-script-813739b1.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-263c88ec.css"></noscript><link rel="icon" href="https://prev.rust-lang.org/favicon.ico"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">log/</div>__private_api.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-3"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="doccomment">//! WARNING: this is not part of the crate's public API and is subject to change at any time
<a href=#2 id=2 data-nosnippet>2</a>
<a href=#3 id=3 data-nosnippet>3</a></span><span class="kw">use </span><span class="self">self</span>::sealed::KVs;
<a href=#4 id=4 data-nosnippet>4</a><span class="kw">use crate</span>::{logger, Level, Log, Metadata, Record};
<a href=#5 id=5 data-nosnippet>5</a><span class="kw">use </span>std::fmt::Arguments;
<a href=#6 id=6 data-nosnippet>6</a><span class="kw">use </span>std::panic::Location;
<a href=#7 id=7 data-nosnippet>7</a><span class="kw">pub use </span>std::{format_args, module_path, stringify};
<a href=#8 id=8 data-nosnippet>8</a>
<a href=#9 id=9 data-nosnippet>9</a><span class="attr">#[cfg(not(feature = <span class="string">"kv"</span>))]
<a href=#10 id=10 data-nosnippet>10</a></span><span class="kw">pub type </span>Value&lt;<span class="lifetime">'a</span>&gt; = <span class="kw-2">&amp;</span><span class="lifetime">'a </span>str;
<a href=#11 id=11 data-nosnippet>11</a>
<a href=#12 id=12 data-nosnippet>12</a><span class="kw">mod </span>sealed {
<a href=#13 id=13 data-nosnippet>13</a> <span class="doccomment">/// Types for the `kv` argument.
<a href=#14 id=14 data-nosnippet>14</a> </span><span class="kw">pub trait </span>KVs&lt;<span class="lifetime">'a</span>&gt; {
<a href=#15 id=15 data-nosnippet>15</a> <span class="kw">fn </span>into_kvs(<span class="self">self</span>) -&gt; <span class="prelude-ty">Option</span>&lt;<span class="kw-2">&amp;</span><span class="lifetime">'a </span>[(<span class="kw-2">&amp;</span><span class="lifetime">'a </span>str, <span class="kw">super</span>::Value&lt;<span class="lifetime">'a</span>&gt;)]&gt;;
<a href=#16 id=16 data-nosnippet>16</a> }
<a href=#17 id=17 data-nosnippet>17</a>}
<a href=#18 id=18 data-nosnippet>18</a>
<a href=#19 id=19 data-nosnippet>19</a><span class="comment">// Types for the `kv` argument.
<a href=#20 id=20 data-nosnippet>20</a>
<a href=#21 id=21 data-nosnippet>21</a></span><span class="kw">impl</span>&lt;<span class="lifetime">'a</span>&gt; KVs&lt;<span class="lifetime">'a</span>&gt; <span class="kw">for </span><span class="kw-2">&amp;</span><span class="lifetime">'a </span>[(<span class="kw-2">&amp;</span><span class="lifetime">'a </span>str, Value&lt;<span class="lifetime">'a</span>&gt;)] {
<a href=#22 id=22 data-nosnippet>22</a> <span class="attr">#[inline]
<a href=#23 id=23 data-nosnippet>23</a> </span><span class="kw">fn </span>into_kvs(<span class="self">self</span>) -&gt; <span class="prelude-ty">Option</span>&lt;<span class="kw-2">&amp;</span><span class="lifetime">'a </span>[(<span class="kw-2">&amp;</span><span class="lifetime">'a </span>str, Value&lt;<span class="lifetime">'a</span>&gt;)]&gt; {
<a href=#24 id=24 data-nosnippet>24</a> <span class="prelude-val">Some</span>(<span class="self">self</span>)
<a href=#25 id=25 data-nosnippet>25</a> }
<a href=#26 id=26 data-nosnippet>26</a>}
<a href=#27 id=27 data-nosnippet>27</a>
<a href=#28 id=28 data-nosnippet>28</a><span class="kw">impl</span>&lt;<span class="lifetime">'a</span>&gt; KVs&lt;<span class="lifetime">'a</span>&gt; <span class="kw">for </span>() {
<a href=#29 id=29 data-nosnippet>29</a> <span class="attr">#[inline]
<a href=#30 id=30 data-nosnippet>30</a> </span><span class="kw">fn </span>into_kvs(<span class="self">self</span>) -&gt; <span class="prelude-ty">Option</span>&lt;<span class="kw-2">&amp;</span><span class="lifetime">'a </span>[(<span class="kw-2">&amp;</span><span class="lifetime">'a </span>str, Value&lt;<span class="lifetime">'a</span>&gt;)]&gt; {
<a href=#31 id=31 data-nosnippet>31</a> <span class="prelude-val">None
<a href=#32 id=32 data-nosnippet>32</a> </span>}
<a href=#33 id=33 data-nosnippet>33</a>}
<a href=#34 id=34 data-nosnippet>34</a>
<a href=#35 id=35 data-nosnippet>35</a><span class="comment">// Log implementation.
<a href=#36 id=36 data-nosnippet>36</a>
<a href=#37 id=37 data-nosnippet>37</a></span><span class="doccomment">/// The global logger proxy.
<a href=#38 id=38 data-nosnippet>38</a></span><span class="attr">#[derive(Debug)]
<a href=#39 id=39 data-nosnippet>39</a></span><span class="kw">pub struct </span>GlobalLogger;
<a href=#40 id=40 data-nosnippet>40</a>
<a href=#41 id=41 data-nosnippet>41</a><span class="kw">impl </span>Log <span class="kw">for </span>GlobalLogger {
<a href=#42 id=42 data-nosnippet>42</a> <span class="kw">fn </span>enabled(<span class="kw-2">&amp;</span><span class="self">self</span>, metadata: <span class="kw-2">&amp;</span>Metadata) -&gt; bool {
<a href=#43 id=43 data-nosnippet>43</a> logger().enabled(metadata)
<a href=#44 id=44 data-nosnippet>44</a> }
<a href=#45 id=45 data-nosnippet>45</a>
<a href=#46 id=46 data-nosnippet>46</a> <span class="kw">fn </span>log(<span class="kw-2">&amp;</span><span class="self">self</span>, record: <span class="kw-2">&amp;</span>Record) {
<a href=#47 id=47 data-nosnippet>47</a> logger().log(record)
<a href=#48 id=48 data-nosnippet>48</a> }
<a href=#49 id=49 data-nosnippet>49</a>
<a href=#50 id=50 data-nosnippet>50</a> <span class="kw">fn </span>flush(<span class="kw-2">&amp;</span><span class="self">self</span>) {
<a href=#51 id=51 data-nosnippet>51</a> logger().flush()
<a href=#52 id=52 data-nosnippet>52</a> }
<a href=#53 id=53 data-nosnippet>53</a>}
<a href=#54 id=54 data-nosnippet>54</a>
<a href=#55 id=55 data-nosnippet>55</a><span class="comment">// Split from `log` to reduce generics and code size
<a href=#56 id=56 data-nosnippet>56</a></span><span class="kw">fn </span>log_impl&lt;L: Log&gt;(
<a href=#57 id=57 data-nosnippet>57</a> logger: L,
<a href=#58 id=58 data-nosnippet>58</a> args: Arguments,
<a href=#59 id=59 data-nosnippet>59</a> level: Level,
<a href=#60 id=60 data-nosnippet>60</a> <span class="kw-2">&amp;</span>(target, module_path, loc): <span class="kw-2">&amp;</span>(<span class="kw-2">&amp;</span>str, <span class="kw-2">&amp;</span><span class="lifetime">'static </span>str, <span class="kw-2">&amp;</span><span class="lifetime">'static </span>Location),
<a href=#61 id=61 data-nosnippet>61</a> kvs: <span class="prelude-ty">Option</span>&lt;<span class="kw-2">&amp;</span>[(<span class="kw-2">&amp;</span>str, Value)]&gt;,
<a href=#62 id=62 data-nosnippet>62</a>) {
<a href=#63 id=63 data-nosnippet>63</a> <span class="attr">#[cfg(not(feature = <span class="string">"kv"</span>))]
<a href=#64 id=64 data-nosnippet>64</a> </span><span class="kw">if </span>kvs.is_some() {
<a href=#65 id=65 data-nosnippet>65</a> <span class="macro">panic!</span>(<span class="string">"key-value support is experimental and must be enabled using the `kv` feature"</span>)
<a href=#66 id=66 data-nosnippet>66</a> }
<a href=#67 id=67 data-nosnippet>67</a>
<a href=#68 id=68 data-nosnippet>68</a> <span class="kw">let </span><span class="kw-2">mut </span>builder = Record::builder();
<a href=#69 id=69 data-nosnippet>69</a>
<a href=#70 id=70 data-nosnippet>70</a> builder
<a href=#71 id=71 data-nosnippet>71</a> .args(args)
<a href=#72 id=72 data-nosnippet>72</a> .level(level)
<a href=#73 id=73 data-nosnippet>73</a> .target(target)
<a href=#74 id=74 data-nosnippet>74</a> .module_path_static(<span class="prelude-val">Some</span>(module_path))
<a href=#75 id=75 data-nosnippet>75</a> .file_static(<span class="prelude-val">Some</span>(loc.file()))
<a href=#76 id=76 data-nosnippet>76</a> .line(<span class="prelude-val">Some</span>(loc.line()));
<a href=#77 id=77 data-nosnippet>77</a>
<a href=#78 id=78 data-nosnippet>78</a> <span class="attr">#[cfg(feature = <span class="string">"kv"</span>)]
<a href=#79 id=79 data-nosnippet>79</a> </span>builder.key_values(<span class="kw-2">&amp;</span>kvs);
<a href=#80 id=80 data-nosnippet>80</a>
<a href=#81 id=81 data-nosnippet>81</a> logger.log(<span class="kw-2">&amp;</span>builder.build());
<a href=#82 id=82 data-nosnippet>82</a>}
<a href=#83 id=83 data-nosnippet>83</a>
<a href=#84 id=84 data-nosnippet>84</a><span class="kw">pub fn </span>log&lt;<span class="lifetime">'a</span>, K, L&gt;(
<a href=#85 id=85 data-nosnippet>85</a> logger: L,
<a href=#86 id=86 data-nosnippet>86</a> args: Arguments,
<a href=#87 id=87 data-nosnippet>87</a> level: Level,
<a href=#88 id=88 data-nosnippet>88</a> target_module_path_and_loc: <span class="kw-2">&amp;</span>(<span class="kw-2">&amp;</span>str, <span class="kw-2">&amp;</span><span class="lifetime">'static </span>str, <span class="kw-2">&amp;</span><span class="lifetime">'static </span>Location),
<a href=#89 id=89 data-nosnippet>89</a> kvs: K,
<a href=#90 id=90 data-nosnippet>90</a>) <span class="kw">where
<a href=#91 id=91 data-nosnippet>91</a> </span>K: KVs&lt;<span class="lifetime">'a</span>&gt;,
<a href=#92 id=92 data-nosnippet>92</a> L: Log,
<a href=#93 id=93 data-nosnippet>93</a>{
<a href=#94 id=94 data-nosnippet>94</a> log_impl(
<a href=#95 id=95 data-nosnippet>95</a> logger,
<a href=#96 id=96 data-nosnippet>96</a> args,
<a href=#97 id=97 data-nosnippet>97</a> level,
<a href=#98 id=98 data-nosnippet>98</a> target_module_path_and_loc,
<a href=#99 id=99 data-nosnippet>99</a> kvs.into_kvs(),
<a href=#100 id=100 data-nosnippet>100</a> )
<a href=#101 id=101 data-nosnippet>101</a>}
<a href=#102 id=102 data-nosnippet>102</a>
<a href=#103 id=103 data-nosnippet>103</a><span class="kw">pub fn </span>enabled&lt;L: Log&gt;(logger: L, level: Level, target: <span class="kw-2">&amp;</span>str) -&gt; bool {
<a href=#104 id=104 data-nosnippet>104</a> logger.enabled(<span class="kw-2">&amp;</span>Metadata::builder().level(level).target(target).build())
<a href=#105 id=105 data-nosnippet>105</a>}
<a href=#106 id=106 data-nosnippet>106</a>
<a href=#107 id=107 data-nosnippet>107</a><span class="attr">#[track_caller]
<a href=#108 id=108 data-nosnippet>108</a></span><span class="kw">pub fn </span>loc() -&gt; <span class="kw-2">&amp;</span><span class="lifetime">'static </span>Location&lt;<span class="lifetime">'static</span>&gt; {
<a href=#109 id=109 data-nosnippet>109</a> Location::caller()
<a href=#110 id=110 data-nosnippet>110</a>}
<a href=#111 id=111 data-nosnippet>111</a>
<a href=#112 id=112 data-nosnippet>112</a><span class="attr">#[cfg(feature = <span class="string">"kv"</span>)]
<a href=#113 id=113 data-nosnippet>113</a></span><span class="kw">mod </span>kv_support {
<a href=#114 id=114 data-nosnippet>114</a> <span class="kw">use </span><span class="kw">crate</span>::kv;
<a href=#115 id=115 data-nosnippet>115</a>
<a href=#116 id=116 data-nosnippet>116</a> <span class="kw">pub type </span>Value&lt;<span class="lifetime">'a</span>&gt; = kv::Value&lt;<span class="lifetime">'a</span>&gt;;
<a href=#117 id=117 data-nosnippet>117</a>
<a href=#118 id=118 data-nosnippet>118</a> <span class="comment">// NOTE: Many functions here accept a double reference &amp;&amp;V
<a href=#119 id=119 data-nosnippet>119</a> // This is so V itself can be ?Sized, while still letting us
<a href=#120 id=120 data-nosnippet>120</a> // erase it to some dyn Trait (because &amp;T is sized)
<a href=#121 id=121 data-nosnippet>121</a>
<a href=#122 id=122 data-nosnippet>122</a> </span><span class="kw">pub fn </span>capture_to_value&lt;<span class="lifetime">'a</span>, V: kv::ToValue + <span class="question-mark">?</span>Sized&gt;(v: <span class="kw-2">&amp;</span><span class="lifetime">'a </span><span class="kw-2">&amp;</span><span class="lifetime">'a </span>V) -&gt; Value&lt;<span class="lifetime">'a</span>&gt; {
<a href=#123 id=123 data-nosnippet>123</a> v.to_value()
<a href=#124 id=124 data-nosnippet>124</a> }
<a href=#125 id=125 data-nosnippet>125</a>
<a href=#126 id=126 data-nosnippet>126</a> <span class="kw">pub fn </span>capture_debug&lt;<span class="lifetime">'a</span>, V: core::fmt::Debug + <span class="question-mark">?</span>Sized&gt;(v: <span class="kw-2">&amp;</span><span class="lifetime">'a </span><span class="kw-2">&amp;</span><span class="lifetime">'a </span>V) -&gt; Value&lt;<span class="lifetime">'a</span>&gt; {
<a href=#127 id=127 data-nosnippet>127</a> Value::from_debug(v)
<a href=#128 id=128 data-nosnippet>128</a> }
<a href=#129 id=129 data-nosnippet>129</a>
<a href=#130 id=130 data-nosnippet>130</a> <span class="kw">pub fn </span>capture_display&lt;<span class="lifetime">'a</span>, V: core::fmt::Display + <span class="question-mark">?</span>Sized&gt;(v: <span class="kw-2">&amp;</span><span class="lifetime">'a </span><span class="kw-2">&amp;</span><span class="lifetime">'a </span>V) -&gt; Value&lt;<span class="lifetime">'a</span>&gt; {
<a href=#131 id=131 data-nosnippet>131</a> Value::from_display(v)
<a href=#132 id=132 data-nosnippet>132</a> }
<a href=#133 id=133 data-nosnippet>133</a>
<a href=#134 id=134 data-nosnippet>134</a> <span class="attr">#[cfg(feature = <span class="string">"kv_std"</span>)]
<a href=#135 id=135 data-nosnippet>135</a> </span><span class="kw">pub fn </span>capture_error&lt;<span class="lifetime">'a</span>&gt;(v: <span class="kw-2">&amp;</span><span class="lifetime">'a </span>(<span class="kw">dyn </span>std::error::Error + <span class="lifetime">'static</span>)) -&gt; Value&lt;<span class="lifetime">'a</span>&gt; {
<a href=#136 id=136 data-nosnippet>136</a> Value::from_dyn_error(v)
<a href=#137 id=137 data-nosnippet>137</a> }
<a href=#138 id=138 data-nosnippet>138</a>
<a href=#139 id=139 data-nosnippet>139</a> <span class="attr">#[cfg(feature = <span class="string">"kv_sval"</span>)]
<a href=#140 id=140 data-nosnippet>140</a> </span><span class="kw">pub fn </span>capture_sval&lt;<span class="lifetime">'a</span>, V: sval::Value + <span class="question-mark">?</span>Sized&gt;(v: <span class="kw-2">&amp;</span><span class="lifetime">'a </span><span class="kw-2">&amp;</span><span class="lifetime">'a </span>V) -&gt; Value&lt;<span class="lifetime">'a</span>&gt; {
<a href=#141 id=141 data-nosnippet>141</a> Value::from_sval(v)
<a href=#142 id=142 data-nosnippet>142</a> }
<a href=#143 id=143 data-nosnippet>143</a>
<a href=#144 id=144 data-nosnippet>144</a> <span class="attr">#[cfg(feature = <span class="string">"kv_serde"</span>)]
<a href=#145 id=145 data-nosnippet>145</a> </span><span class="kw">pub fn </span>capture_serde&lt;<span class="lifetime">'a</span>, V: serde_core::Serialize + <span class="question-mark">?</span>Sized&gt;(v: <span class="kw-2">&amp;</span><span class="lifetime">'a </span><span class="kw-2">&amp;</span><span class="lifetime">'a </span>V) -&gt; Value&lt;<span class="lifetime">'a</span>&gt; {
<a href=#146 id=146 data-nosnippet>146</a> Value::from_serde(v)
<a href=#147 id=147 data-nosnippet>147</a> }
<a href=#148 id=148 data-nosnippet>148</a>}
<a href=#149 id=149 data-nosnippet>149</a>
<a href=#150 id=150 data-nosnippet>150</a><span class="attr">#[cfg(feature = <span class="string">"kv"</span>)]
<a href=#151 id=151 data-nosnippet>151</a></span><span class="kw">pub use </span><span class="self">self</span>::kv_support::<span class="kw-2">*</span>;
</code></pre></div></section></main></body></html>
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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 `/home/newkirk/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/log-0.4.29/src/macros.rs`."><title>macros.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="log" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../../static.files/storage-e2aeef58.js"></script><script defer src="../../static.files/src-script-813739b1.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-263c88ec.css"></noscript><link rel="icon" href="https://prev.rust-lang.org/favicon.ico"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">log/</div>macros.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-3"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="comment">// Copyright 2014-2015 The Rust Project Developers. See the COPYRIGHT
<a href=#2 id=2 data-nosnippet>2</a>// file at the top-level directory of this distribution and at
<a href=#3 id=3 data-nosnippet>3</a>// http://rust-lang.org/COPYRIGHT.
<a href=#4 id=4 data-nosnippet>4</a>//
<a href=#5 id=5 data-nosnippet>5</a>// Licensed under the Apache License, Version 2.0 &lt;LICENSE-APACHE or
<a href=#6 id=6 data-nosnippet>6</a>// http://www.apache.org/licenses/LICENSE-2.0&gt; or the MIT license
<a href=#7 id=7 data-nosnippet>7</a>// &lt;LICENSE-MIT or http://opensource.org/licenses/MIT&gt;, at your
<a href=#8 id=8 data-nosnippet>8</a>// option. This file may not be copied, modified, or distributed
<a href=#9 id=9 data-nosnippet>9</a>// except according to those terms.
<a href=#10 id=10 data-nosnippet>10</a>
<a href=#11 id=11 data-nosnippet>11</a></span><span class="doccomment">/// The standard logging macro.
<a href=#12 id=12 data-nosnippet>12</a>///
<a href=#13 id=13 data-nosnippet>13</a>/// This macro will generically log with the specified `Level` and `format!`
<a href=#14 id=14 data-nosnippet>14</a>/// based argument list.
<a href=#15 id=15 data-nosnippet>15</a>///
<a href=#16 id=16 data-nosnippet>16</a>/// ```
<a href=#17 id=17 data-nosnippet>17</a>/// use log::{log, Level};
<a href=#18 id=18 data-nosnippet>18</a>///
<a href=#19 id=19 data-nosnippet>19</a>/// let data = (42, "Forty-two");
<a href=#20 id=20 data-nosnippet>20</a>/// let private_data = "private";
<a href=#21 id=21 data-nosnippet>21</a>///
<a href=#22 id=22 data-nosnippet>22</a>/// log!(Level::Error, "Received errors: {}, {}", data.0, data.1);
<a href=#23 id=23 data-nosnippet>23</a>/// ```
<a href=#24 id=24 data-nosnippet>24</a>///
<a href=#25 id=25 data-nosnippet>25</a>/// Optionally, you can specify a `target` argument to attach a specific target
<a href=#26 id=26 data-nosnippet>26</a>/// to the log record. By default, the target is the module path of the caller.
<a href=#27 id=27 data-nosnippet>27</a>///
<a href=#28 id=28 data-nosnippet>28</a>/// ```
<a href=#29 id=29 data-nosnippet>29</a>/// use log::{log, Level};
<a href=#30 id=30 data-nosnippet>30</a>///
<a href=#31 id=31 data-nosnippet>31</a>/// let data = (42, "Forty-two");
<a href=#32 id=32 data-nosnippet>32</a>/// let private_data = "private";
<a href=#33 id=33 data-nosnippet>33</a>///
<a href=#34 id=34 data-nosnippet>34</a>/// log!(
<a href=#35 id=35 data-nosnippet>35</a>/// target: "app_events",
<a href=#36 id=36 data-nosnippet>36</a>/// Level::Error,
<a href=#37 id=37 data-nosnippet>37</a>/// "Received errors: {}, {}",
<a href=#38 id=38 data-nosnippet>38</a>/// data.0, data.1
<a href=#39 id=39 data-nosnippet>39</a>/// );
<a href=#40 id=40 data-nosnippet>40</a>/// ```
<a href=#41 id=41 data-nosnippet>41</a>///
<a href=#42 id=42 data-nosnippet>42</a>/// And optionally, you can specify a `logger` argument to use a specific logger
<a href=#43 id=43 data-nosnippet>43</a>/// instead of the default global logger.
<a href=#44 id=44 data-nosnippet>44</a>///
<a href=#45 id=45 data-nosnippet>45</a>/// ```
<a href=#46 id=46 data-nosnippet>46</a>/// # struct MyLogger {}
<a href=#47 id=47 data-nosnippet>47</a>/// # impl Log for MyLogger {
<a href=#48 id=48 data-nosnippet>48</a>/// # fn enabled(&amp;self, _metadata: &amp;log::Metadata) -&gt; bool {
<a href=#49 id=49 data-nosnippet>49</a>/// # false
<a href=#50 id=50 data-nosnippet>50</a>/// # }
<a href=#51 id=51 data-nosnippet>51</a>/// # fn log(&amp;self, _record: &amp;log::Record) {}
<a href=#52 id=52 data-nosnippet>52</a>/// # fn flush(&amp;self) {}
<a href=#53 id=53 data-nosnippet>53</a>/// # }
<a href=#54 id=54 data-nosnippet>54</a>/// use log::{log, Level, Log};
<a href=#55 id=55 data-nosnippet>55</a>///
<a href=#56 id=56 data-nosnippet>56</a>/// let data = (42, "Forty-two");
<a href=#57 id=57 data-nosnippet>57</a>/// let private_data = "private";
<a href=#58 id=58 data-nosnippet>58</a>///
<a href=#59 id=59 data-nosnippet>59</a>/// let my_logger = MyLogger {};
<a href=#60 id=60 data-nosnippet>60</a>/// log!(
<a href=#61 id=61 data-nosnippet>61</a>/// logger: my_logger,
<a href=#62 id=62 data-nosnippet>62</a>/// Level::Error,
<a href=#63 id=63 data-nosnippet>63</a>/// "Received errors: {}, {}",
<a href=#64 id=64 data-nosnippet>64</a>/// data.0, data.1
<a href=#65 id=65 data-nosnippet>65</a>/// );
<a href=#66 id=66 data-nosnippet>66</a>/// ```
<a href=#67 id=67 data-nosnippet>67</a>///
<a href=#68 id=68 data-nosnippet>68</a>/// The `logger` argument accepts a value that implements the `Log` trait. The value
<a href=#69 id=69 data-nosnippet>69</a>/// will be borrowed within the macro.
<a href=#70 id=70 data-nosnippet>70</a>///
<a href=#71 id=71 data-nosnippet>71</a>/// Note that the global level set via Cargo features, or through `set_max_level` will
<a href=#72 id=72 data-nosnippet>72</a>/// still apply, even when a custom logger is supplied with the `logger` argument.
<a href=#73 id=73 data-nosnippet>73</a></span><span class="attr">#[macro_export]
<a href=#74 id=74 data-nosnippet>74</a>#[clippy::format_args]
<a href=#75 id=75 data-nosnippet>75</a></span><span class="macro">macro_rules!</span> log {
<a href=#76 id=76 data-nosnippet>76</a> <span class="comment">// log!(logger: my_logger, target: "my_target", Level::Info, "a {} event", "log");
<a href=#77 id=77 data-nosnippet>77</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, target: <span class="macro-nonterminal">$target</span>:expr, <span class="macro-nonterminal">$lvl</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#78 id=78 data-nosnippet>78</a> <span class="macro-nonterminal">$crate::__log</span>!(
<a href=#79 id=79 data-nosnippet>79</a> logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>),
<a href=#80 id=80 data-nosnippet>80</a> target: <span class="macro-nonterminal">$target</span>,
<a href=#81 id=81 data-nosnippet>81</a> <span class="macro-nonterminal">$lvl</span>,
<a href=#82 id=82 data-nosnippet>82</a> $(<span class="macro-nonterminal">$arg</span>)+
<a href=#83 id=83 data-nosnippet>83</a> )
<a href=#84 id=84 data-nosnippet>84</a> });
<a href=#85 id=85 data-nosnippet>85</a>
<a href=#86 id=86 data-nosnippet>86</a> <span class="comment">// log!(logger: my_logger, Level::Info, "a log event")
<a href=#87 id=87 data-nosnippet>87</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, <span class="macro-nonterminal">$lvl</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#88 id=88 data-nosnippet>88</a> <span class="macro-nonterminal">$crate::__log</span>!(
<a href=#89 id=89 data-nosnippet>89</a> logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>),
<a href=#90 id=90 data-nosnippet>90</a> target: <span class="macro-nonterminal">$crate::__private_api::module_path</span>!(),
<a href=#91 id=91 data-nosnippet>91</a> <span class="macro-nonterminal">$lvl</span>,
<a href=#92 id=92 data-nosnippet>92</a> $(<span class="macro-nonterminal">$arg</span>)+
<a href=#93 id=93 data-nosnippet>93</a> )
<a href=#94 id=94 data-nosnippet>94</a> });
<a href=#95 id=95 data-nosnippet>95</a>
<a href=#96 id=96 data-nosnippet>96</a> <span class="comment">// log!(target: "my_target", Level::Info, "a log event")
<a href=#97 id=97 data-nosnippet>97</a> </span>(target: <span class="macro-nonterminal">$target</span>:expr, <span class="macro-nonterminal">$lvl</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#98 id=98 data-nosnippet>98</a> <span class="macro-nonterminal">$crate::__log</span>!(
<a href=#99 id=99 data-nosnippet>99</a> logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(__log_global_logger),
<a href=#100 id=100 data-nosnippet>100</a> target: <span class="macro-nonterminal">$target</span>,
<a href=#101 id=101 data-nosnippet>101</a> <span class="macro-nonterminal">$lvl</span>,
<a href=#102 id=102 data-nosnippet>102</a> $(<span class="macro-nonterminal">$arg</span>)+
<a href=#103 id=103 data-nosnippet>103</a> )
<a href=#104 id=104 data-nosnippet>104</a> });
<a href=#105 id=105 data-nosnippet>105</a>
<a href=#106 id=106 data-nosnippet>106</a> <span class="comment">// log!(Level::Info, "a log event")
<a href=#107 id=107 data-nosnippet>107</a> </span>(<span class="macro-nonterminal">$lvl</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#108 id=108 data-nosnippet>108</a> <span class="macro-nonterminal">$crate::__log</span>!(
<a href=#109 id=109 data-nosnippet>109</a> logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(__log_global_logger),
<a href=#110 id=110 data-nosnippet>110</a> target: <span class="macro-nonterminal">$crate::__private_api::module_path</span>!(),
<a href=#111 id=111 data-nosnippet>111</a> <span class="macro-nonterminal">$lvl</span>,
<a href=#112 id=112 data-nosnippet>112</a> $(<span class="macro-nonterminal">$arg</span>)+
<a href=#113 id=113 data-nosnippet>113</a> )
<a href=#114 id=114 data-nosnippet>114</a> });
<a href=#115 id=115 data-nosnippet>115</a>}
<a href=#116 id=116 data-nosnippet>116</a>
<a href=#117 id=117 data-nosnippet>117</a><span class="attr">#[doc(hidden)]
<a href=#118 id=118 data-nosnippet>118</a>#[macro_export]
<a href=#119 id=119 data-nosnippet>119</a></span><span class="macro">macro_rules!</span> __log {
<a href=#120 id=120 data-nosnippet>120</a> <span class="comment">// log!(logger: my_logger, target: "my_target", Level::Info, key1:? = 42, key2 = true; "a {} event", "log");
<a href=#121 id=121 data-nosnippet>121</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, target: <span class="macro-nonterminal">$target</span>:expr, <span class="macro-nonterminal">$lvl</span>:expr, $(<span class="macro-nonterminal">$key</span>:tt $(:<span class="macro-nonterminal">$capture</span>:tt)<span class="question-mark">? </span>$(= <span class="macro-nonterminal">$value</span>:expr)<span class="question-mark">?</span>),+; $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#122 id=122 data-nosnippet>122</a> <span class="kw">let </span>lvl = <span class="macro-nonterminal">$lvl</span>;
<a href=#123 id=123 data-nosnippet>123</a> <span class="kw">if </span>lvl &lt;= <span class="macro-nonterminal">$crate::STATIC_MAX_LEVEL </span>&amp;&amp; lvl &lt;= <span class="macro-nonterminal">$crate::max_level</span>() {
<a href=#124 id=124 data-nosnippet>124</a> <span class="macro-nonterminal">$crate::__private_api::log</span>(
<a href=#125 id=125 data-nosnippet>125</a> <span class="macro-nonterminal">$logger</span>,
<a href=#126 id=126 data-nosnippet>126</a> <span class="macro-nonterminal">$crate::__private_api::format_args</span>!($(<span class="macro-nonterminal">$arg</span>)+),
<a href=#127 id=127 data-nosnippet>127</a> lvl,
<a href=#128 id=128 data-nosnippet>128</a> <span class="kw-2">&amp;</span>(<span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$crate::__private_api::module_path</span>!(), <span class="macro-nonterminal">$crate::__private_api::loc</span>()),
<a href=#129 id=129 data-nosnippet>129</a> <span class="kw-2">&amp;</span>[$((<span class="macro-nonterminal">$crate::__log_key</span>!(<span class="macro-nonterminal">$key</span>), <span class="macro-nonterminal">$crate::__log_value</span>!(<span class="macro-nonterminal">$key </span>$(:<span class="macro-nonterminal">$capture</span>)* = $(<span class="macro-nonterminal">$value</span>)<span class="kw-2">*</span>))),+] <span class="kw">as </span><span class="kw-2">&amp;</span>[<span class="kw">_</span>],
<a href=#130 id=130 data-nosnippet>130</a> );
<a href=#131 id=131 data-nosnippet>131</a> }
<a href=#132 id=132 data-nosnippet>132</a> });
<a href=#133 id=133 data-nosnippet>133</a>
<a href=#134 id=134 data-nosnippet>134</a> <span class="comment">// log!(logger: my_logger, target: "my_target", Level::Info, "a {} event", "log");
<a href=#135 id=135 data-nosnippet>135</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, target: <span class="macro-nonterminal">$target</span>:expr, <span class="macro-nonterminal">$lvl</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#136 id=136 data-nosnippet>136</a> <span class="kw">let </span>lvl = <span class="macro-nonterminal">$lvl</span>;
<a href=#137 id=137 data-nosnippet>137</a> <span class="kw">if </span>lvl &lt;= <span class="macro-nonterminal">$crate::STATIC_MAX_LEVEL </span>&amp;&amp; lvl &lt;= <span class="macro-nonterminal">$crate::max_level</span>() {
<a href=#138 id=138 data-nosnippet>138</a> <span class="macro-nonterminal">$crate::__private_api::log</span>(
<a href=#139 id=139 data-nosnippet>139</a> <span class="macro-nonterminal">$logger</span>,
<a href=#140 id=140 data-nosnippet>140</a> <span class="macro-nonterminal">$crate::__private_api::format_args</span>!($(<span class="macro-nonterminal">$arg</span>)+),
<a href=#141 id=141 data-nosnippet>141</a> lvl,
<a href=#142 id=142 data-nosnippet>142</a> <span class="kw-2">&amp;</span>(<span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$crate::__private_api::module_path</span>!(), <span class="macro-nonterminal">$crate::__private_api::loc</span>()),
<a href=#143 id=143 data-nosnippet>143</a> (),
<a href=#144 id=144 data-nosnippet>144</a> );
<a href=#145 id=145 data-nosnippet>145</a> }
<a href=#146 id=146 data-nosnippet>146</a> });
<a href=#147 id=147 data-nosnippet>147</a>}
<a href=#148 id=148 data-nosnippet>148</a>
<a href=#149 id=149 data-nosnippet>149</a><span class="doccomment">/// Logs a message at the error level.
<a href=#150 id=150 data-nosnippet>150</a>///
<a href=#151 id=151 data-nosnippet>151</a>/// # Examples
<a href=#152 id=152 data-nosnippet>152</a>///
<a href=#153 id=153 data-nosnippet>153</a>/// ```
<a href=#154 id=154 data-nosnippet>154</a>/// use log::error;
<a href=#155 id=155 data-nosnippet>155</a>///
<a href=#156 id=156 data-nosnippet>156</a>/// # let my_logger = log::__private_api::GlobalLogger;
<a href=#157 id=157 data-nosnippet>157</a>/// let (err_info, port) = ("No connection", 22);
<a href=#158 id=158 data-nosnippet>158</a>///
<a href=#159 id=159 data-nosnippet>159</a>/// error!("Error: {err_info} on port {port}");
<a href=#160 id=160 data-nosnippet>160</a>/// error!(target: "app_events", "App Error: {err_info}, Port: {port}");
<a href=#161 id=161 data-nosnippet>161</a>/// error!(logger: my_logger, "App Error: {err_info}, Port: {port}");
<a href=#162 id=162 data-nosnippet>162</a>/// ```
<a href=#163 id=163 data-nosnippet>163</a></span><span class="attr">#[macro_export]
<a href=#164 id=164 data-nosnippet>164</a>#[clippy::format_args]
<a href=#165 id=165 data-nosnippet>165</a></span><span class="macro">macro_rules!</span> error {
<a href=#166 id=166 data-nosnippet>166</a> <span class="comment">// error!(logger: my_logger, target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
<a href=#167 id=167 data-nosnippet>167</a> // error!(logger: my_logger, target: "my_target", "a {} event", "log")
<a href=#168 id=168 data-nosnippet>168</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, target: <span class="macro-nonterminal">$target</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#169 id=169 data-nosnippet>169</a> <span class="macro-nonterminal">$crate::log</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>), target: <span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$crate::Level::Error</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#170 id=170 data-nosnippet>170</a> });
<a href=#171 id=171 data-nosnippet>171</a>
<a href=#172 id=172 data-nosnippet>172</a> <span class="comment">// error!(logger: my_logger, key1 = 42, key2 = true; "a {} event", "log")
<a href=#173 id=173 data-nosnippet>173</a> // error!(logger: my_logger, "a {} event", "log")
<a href=#174 id=174 data-nosnippet>174</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#175 id=175 data-nosnippet>175</a> <span class="macro-nonterminal">$crate::log</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>), <span class="macro-nonterminal">$crate::Level::Error</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#176 id=176 data-nosnippet>176</a> });
<a href=#177 id=177 data-nosnippet>177</a>
<a href=#178 id=178 data-nosnippet>178</a> <span class="comment">// error!(target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
<a href=#179 id=179 data-nosnippet>179</a> // error!(target: "my_target", "a {} event", "log")
<a href=#180 id=180 data-nosnippet>180</a> </span>(target: <span class="macro-nonterminal">$target</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#181 id=181 data-nosnippet>181</a> <span class="macro-nonterminal">$crate::log</span>!(target: <span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$crate::Level::Error</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#182 id=182 data-nosnippet>182</a> });
<a href=#183 id=183 data-nosnippet>183</a>
<a href=#184 id=184 data-nosnippet>184</a> <span class="comment">// error!("a {} event", "log")
<a href=#185 id=185 data-nosnippet>185</a> </span>($(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; (<span class="macro-nonterminal">$crate::log</span>!(<span class="macro-nonterminal">$crate::Level::Error</span>, $(<span class="macro-nonterminal">$arg</span>)+))
<a href=#186 id=186 data-nosnippet>186</a>}
<a href=#187 id=187 data-nosnippet>187</a>
<a href=#188 id=188 data-nosnippet>188</a><span class="doccomment">/// Logs a message at the warn level.
<a href=#189 id=189 data-nosnippet>189</a>///
<a href=#190 id=190 data-nosnippet>190</a>/// # Examples
<a href=#191 id=191 data-nosnippet>191</a>///
<a href=#192 id=192 data-nosnippet>192</a>/// ```
<a href=#193 id=193 data-nosnippet>193</a>/// use log::warn;
<a href=#194 id=194 data-nosnippet>194</a>///
<a href=#195 id=195 data-nosnippet>195</a>/// # let my_logger = log::__private_api::GlobalLogger;
<a href=#196 id=196 data-nosnippet>196</a>/// let warn_description = "Invalid Input";
<a href=#197 id=197 data-nosnippet>197</a>///
<a href=#198 id=198 data-nosnippet>198</a>/// warn!("Warning! {warn_description}!");
<a href=#199 id=199 data-nosnippet>199</a>/// warn!(target: "input_events", "App received warning: {warn_description}");
<a href=#200 id=200 data-nosnippet>200</a>/// warn!(logger: my_logger, "App received warning: {warn_description}");
<a href=#201 id=201 data-nosnippet>201</a>/// ```
<a href=#202 id=202 data-nosnippet>202</a></span><span class="attr">#[macro_export]
<a href=#203 id=203 data-nosnippet>203</a>#[clippy::format_args]
<a href=#204 id=204 data-nosnippet>204</a></span><span class="macro">macro_rules!</span> warn {
<a href=#205 id=205 data-nosnippet>205</a> <span class="comment">// warn!(logger: my_logger, target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
<a href=#206 id=206 data-nosnippet>206</a> // warn!(logger: my_logger, target: "my_target", "a {} event", "log")
<a href=#207 id=207 data-nosnippet>207</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, target: <span class="macro-nonterminal">$target</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#208 id=208 data-nosnippet>208</a> <span class="macro-nonterminal">$crate::log</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>), target: <span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$crate::Level::Warn</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#209 id=209 data-nosnippet>209</a> });
<a href=#210 id=210 data-nosnippet>210</a>
<a href=#211 id=211 data-nosnippet>211</a> <span class="comment">// warn!(logger: my_logger, key1 = 42, key2 = true; "a {} event", "log")
<a href=#212 id=212 data-nosnippet>212</a> // warn!(logger: my_logger, "a {} event", "log")
<a href=#213 id=213 data-nosnippet>213</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#214 id=214 data-nosnippet>214</a> <span class="macro-nonterminal">$crate::log</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>), <span class="macro-nonterminal">$crate::Level::Warn</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#215 id=215 data-nosnippet>215</a> });
<a href=#216 id=216 data-nosnippet>216</a>
<a href=#217 id=217 data-nosnippet>217</a> <span class="comment">// warn!(target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
<a href=#218 id=218 data-nosnippet>218</a> // warn!(target: "my_target", "a {} event", "log")
<a href=#219 id=219 data-nosnippet>219</a> </span>(target: <span class="macro-nonterminal">$target</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#220 id=220 data-nosnippet>220</a> <span class="macro-nonterminal">$crate::log</span>!(target: <span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$crate::Level::Warn</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#221 id=221 data-nosnippet>221</a> });
<a href=#222 id=222 data-nosnippet>222</a>
<a href=#223 id=223 data-nosnippet>223</a> <span class="comment">// warn!("a {} event", "log")
<a href=#224 id=224 data-nosnippet>224</a> </span>($(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; (<span class="macro-nonterminal">$crate::log</span>!(<span class="macro-nonterminal">$crate::Level::Warn</span>, $(<span class="macro-nonterminal">$arg</span>)+))
<a href=#225 id=225 data-nosnippet>225</a>}
<a href=#226 id=226 data-nosnippet>226</a>
<a href=#227 id=227 data-nosnippet>227</a><span class="doccomment">/// Logs a message at the info level.
<a href=#228 id=228 data-nosnippet>228</a>///
<a href=#229 id=229 data-nosnippet>229</a>/// # Examples
<a href=#230 id=230 data-nosnippet>230</a>///
<a href=#231 id=231 data-nosnippet>231</a>/// ```
<a href=#232 id=232 data-nosnippet>232</a>/// use log::info;
<a href=#233 id=233 data-nosnippet>233</a>///
<a href=#234 id=234 data-nosnippet>234</a>/// # let my_logger = log::__private_api::GlobalLogger;
<a href=#235 id=235 data-nosnippet>235</a>/// # struct Connection { port: u32, speed: f32 }
<a href=#236 id=236 data-nosnippet>236</a>/// let conn_info = Connection { port: 40, speed: 3.20 };
<a href=#237 id=237 data-nosnippet>237</a>///
<a href=#238 id=238 data-nosnippet>238</a>/// info!("Connected to port {} at {} Mb/s", conn_info.port, conn_info.speed);
<a href=#239 id=239 data-nosnippet>239</a>/// info!(
<a href=#240 id=240 data-nosnippet>240</a>/// target: "connection_events",
<a href=#241 id=241 data-nosnippet>241</a>/// "Successful connection, port: {}, speed: {}",
<a href=#242 id=242 data-nosnippet>242</a>/// conn_info.port, conn_info.speed
<a href=#243 id=243 data-nosnippet>243</a>/// );
<a href=#244 id=244 data-nosnippet>244</a>/// info!(
<a href=#245 id=245 data-nosnippet>245</a>/// logger: my_logger,
<a href=#246 id=246 data-nosnippet>246</a>/// "Successful connection, port: {}, speed: {}",
<a href=#247 id=247 data-nosnippet>247</a>/// conn_info.port, conn_info.speed
<a href=#248 id=248 data-nosnippet>248</a>/// );
<a href=#249 id=249 data-nosnippet>249</a>/// ```
<a href=#250 id=250 data-nosnippet>250</a></span><span class="attr">#[macro_export]
<a href=#251 id=251 data-nosnippet>251</a>#[clippy::format_args]
<a href=#252 id=252 data-nosnippet>252</a></span><span class="macro">macro_rules!</span> info {
<a href=#253 id=253 data-nosnippet>253</a> <span class="comment">// info!(logger: my_logger, target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
<a href=#254 id=254 data-nosnippet>254</a> // info!(logger: my_logger, target: "my_target", "a {} event", "log")
<a href=#255 id=255 data-nosnippet>255</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, target: <span class="macro-nonterminal">$target</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#256 id=256 data-nosnippet>256</a> <span class="macro-nonterminal">$crate::log</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>), target: <span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$crate::Level::Info</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#257 id=257 data-nosnippet>257</a> });
<a href=#258 id=258 data-nosnippet>258</a>
<a href=#259 id=259 data-nosnippet>259</a> <span class="comment">// info!(logger: my_logger, key1 = 42, key2 = true; "a {} event", "log")
<a href=#260 id=260 data-nosnippet>260</a> // info!(logger: my_logger, "a {} event", "log")
<a href=#261 id=261 data-nosnippet>261</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#262 id=262 data-nosnippet>262</a> <span class="macro-nonterminal">$crate::log</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>), <span class="macro-nonterminal">$crate::Level::Info</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#263 id=263 data-nosnippet>263</a> });
<a href=#264 id=264 data-nosnippet>264</a>
<a href=#265 id=265 data-nosnippet>265</a> <span class="comment">// info!(target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
<a href=#266 id=266 data-nosnippet>266</a> // info!(target: "my_target", "a {} event", "log")
<a href=#267 id=267 data-nosnippet>267</a> </span>(target: <span class="macro-nonterminal">$target</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#268 id=268 data-nosnippet>268</a> <span class="macro-nonterminal">$crate::log</span>!(target: <span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$crate::Level::Info</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#269 id=269 data-nosnippet>269</a> });
<a href=#270 id=270 data-nosnippet>270</a>
<a href=#271 id=271 data-nosnippet>271</a> <span class="comment">// info!("a {} event", "log")
<a href=#272 id=272 data-nosnippet>272</a> </span>($(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; (<span class="macro-nonterminal">$crate::log</span>!(<span class="macro-nonterminal">$crate::Level::Info</span>, $(<span class="macro-nonterminal">$arg</span>)+))
<a href=#273 id=273 data-nosnippet>273</a>}
<a href=#274 id=274 data-nosnippet>274</a>
<a href=#275 id=275 data-nosnippet>275</a><span class="doccomment">/// Logs a message at the debug level.
<a href=#276 id=276 data-nosnippet>276</a>///
<a href=#277 id=277 data-nosnippet>277</a>/// # Examples
<a href=#278 id=278 data-nosnippet>278</a>///
<a href=#279 id=279 data-nosnippet>279</a>/// ```
<a href=#280 id=280 data-nosnippet>280</a>/// use log::debug;
<a href=#281 id=281 data-nosnippet>281</a>///
<a href=#282 id=282 data-nosnippet>282</a>/// # let my_logger = log::__private_api::GlobalLogger;
<a href=#283 id=283 data-nosnippet>283</a>/// # struct Position { x: f32, y: f32 }
<a href=#284 id=284 data-nosnippet>284</a>/// let pos = Position { x: 3.234, y: -1.223 };
<a href=#285 id=285 data-nosnippet>285</a>///
<a href=#286 id=286 data-nosnippet>286</a>/// debug!("New position: x: {}, y: {}", pos.x, pos.y);
<a href=#287 id=287 data-nosnippet>287</a>/// debug!(target: "app_events", "New position: x: {}, y: {}", pos.x, pos.y);
<a href=#288 id=288 data-nosnippet>288</a>/// debug!(logger: my_logger, "New position: x: {}, y: {}", pos.x, pos.y);
<a href=#289 id=289 data-nosnippet>289</a>/// ```
<a href=#290 id=290 data-nosnippet>290</a></span><span class="attr">#[macro_export]
<a href=#291 id=291 data-nosnippet>291</a>#[clippy::format_args]
<a href=#292 id=292 data-nosnippet>292</a></span><span class="macro">macro_rules!</span> debug {
<a href=#293 id=293 data-nosnippet>293</a> <span class="comment">// debug!(logger: my_logger, target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
<a href=#294 id=294 data-nosnippet>294</a> // debug!(logger: my_logger, target: "my_target", "a {} event", "log")
<a href=#295 id=295 data-nosnippet>295</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, target: <span class="macro-nonterminal">$target</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#296 id=296 data-nosnippet>296</a> <span class="macro-nonterminal">$crate::log</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>), target: <span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$crate::Level::Debug</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#297 id=297 data-nosnippet>297</a> });
<a href=#298 id=298 data-nosnippet>298</a>
<a href=#299 id=299 data-nosnippet>299</a> <span class="comment">// debug!(logger: my_logger, key1 = 42, key2 = true; "a {} event", "log")
<a href=#300 id=300 data-nosnippet>300</a> // debug!(logger: my_logger, "a {} event", "log")
<a href=#301 id=301 data-nosnippet>301</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#302 id=302 data-nosnippet>302</a> <span class="macro-nonterminal">$crate::log</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>), <span class="macro-nonterminal">$crate::Level::Debug</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#303 id=303 data-nosnippet>303</a> });
<a href=#304 id=304 data-nosnippet>304</a>
<a href=#305 id=305 data-nosnippet>305</a> <span class="comment">// debug!(target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
<a href=#306 id=306 data-nosnippet>306</a> // debug!(target: "my_target", "a {} event", "log")
<a href=#307 id=307 data-nosnippet>307</a> </span>(target: <span class="macro-nonterminal">$target</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#308 id=308 data-nosnippet>308</a> <span class="macro-nonterminal">$crate::log</span>!(target: <span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$crate::Level::Debug</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#309 id=309 data-nosnippet>309</a> });
<a href=#310 id=310 data-nosnippet>310</a>
<a href=#311 id=311 data-nosnippet>311</a> <span class="comment">// debug!("a {} event", "log")
<a href=#312 id=312 data-nosnippet>312</a> </span>($(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; (<span class="macro-nonterminal">$crate::log</span>!(<span class="macro-nonterminal">$crate::Level::Debug</span>, $(<span class="macro-nonterminal">$arg</span>)+))
<a href=#313 id=313 data-nosnippet>313</a>}
<a href=#314 id=314 data-nosnippet>314</a>
<a href=#315 id=315 data-nosnippet>315</a><span class="doccomment">/// Logs a message at the trace level.
<a href=#316 id=316 data-nosnippet>316</a>///
<a href=#317 id=317 data-nosnippet>317</a>/// # Examples
<a href=#318 id=318 data-nosnippet>318</a>///
<a href=#319 id=319 data-nosnippet>319</a>/// ```
<a href=#320 id=320 data-nosnippet>320</a>/// use log::trace;
<a href=#321 id=321 data-nosnippet>321</a>///
<a href=#322 id=322 data-nosnippet>322</a>/// # let my_logger = log::__private_api::GlobalLogger;
<a href=#323 id=323 data-nosnippet>323</a>/// # struct Position { x: f32, y: f32 }
<a href=#324 id=324 data-nosnippet>324</a>/// let pos = Position { x: 3.234, y: -1.223 };
<a href=#325 id=325 data-nosnippet>325</a>///
<a href=#326 id=326 data-nosnippet>326</a>/// trace!("Position is: x: {}, y: {}", pos.x, pos.y);
<a href=#327 id=327 data-nosnippet>327</a>/// trace!(target: "app_events", "x is {} and y is {}",
<a href=#328 id=328 data-nosnippet>328</a>/// if pos.x &gt;= 0.0 { "positive" } else { "negative" },
<a href=#329 id=329 data-nosnippet>329</a>/// if pos.y &gt;= 0.0 { "positive" } else { "negative" });
<a href=#330 id=330 data-nosnippet>330</a>/// trace!(logger: my_logger, "x is {} and y is {}",
<a href=#331 id=331 data-nosnippet>331</a>/// if pos.x &gt;= 0.0 { "positive" } else { "negative" },
<a href=#332 id=332 data-nosnippet>332</a>/// if pos.y &gt;= 0.0 { "positive" } else { "negative" });
<a href=#333 id=333 data-nosnippet>333</a>/// ```
<a href=#334 id=334 data-nosnippet>334</a></span><span class="attr">#[macro_export]
<a href=#335 id=335 data-nosnippet>335</a>#[clippy::format_args]
<a href=#336 id=336 data-nosnippet>336</a></span><span class="macro">macro_rules!</span> trace {
<a href=#337 id=337 data-nosnippet>337</a> <span class="comment">// trace!(logger: my_logger, target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
<a href=#338 id=338 data-nosnippet>338</a> // trace!(logger: my_logger, target: "my_target", "a {} event", "log")
<a href=#339 id=339 data-nosnippet>339</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, target: <span class="macro-nonterminal">$target</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#340 id=340 data-nosnippet>340</a> <span class="macro-nonterminal">$crate::log</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>), target: <span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$crate::Level::Trace</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#341 id=341 data-nosnippet>341</a> });
<a href=#342 id=342 data-nosnippet>342</a>
<a href=#343 id=343 data-nosnippet>343</a> <span class="comment">// trace!(logger: my_logger, key1 = 42, key2 = true; "a {} event", "log")
<a href=#344 id=344 data-nosnippet>344</a> // trace!(logger: my_logger, "a {} event", "log")
<a href=#345 id=345 data-nosnippet>345</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#346 id=346 data-nosnippet>346</a> <span class="macro-nonterminal">$crate::log</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>), <span class="macro-nonterminal">$crate::Level::Trace</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#347 id=347 data-nosnippet>347</a> });
<a href=#348 id=348 data-nosnippet>348</a>
<a href=#349 id=349 data-nosnippet>349</a> <span class="comment">// trace!(target: "my_target", key1 = 42, key2 = true; "a {} event", "log")
<a href=#350 id=350 data-nosnippet>350</a> // trace!(target: "my_target", "a {} event", "log")
<a href=#351 id=351 data-nosnippet>351</a> </span>(target: <span class="macro-nonterminal">$target</span>:expr, $(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; ({
<a href=#352 id=352 data-nosnippet>352</a> <span class="macro-nonterminal">$crate::log</span>!(target: <span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$crate::Level::Trace</span>, $(<span class="macro-nonterminal">$arg</span>)+)
<a href=#353 id=353 data-nosnippet>353</a> });
<a href=#354 id=354 data-nosnippet>354</a>
<a href=#355 id=355 data-nosnippet>355</a> <span class="comment">// trace!("a {} event", "log")
<a href=#356 id=356 data-nosnippet>356</a> </span>($(<span class="macro-nonterminal">$arg</span>:tt)+) =&gt; (<span class="macro-nonterminal">$crate::log</span>!(<span class="macro-nonterminal">$crate::Level::Trace</span>, $(<span class="macro-nonterminal">$arg</span>)+))
<a href=#357 id=357 data-nosnippet>357</a>}
<a href=#358 id=358 data-nosnippet>358</a>
<a href=#359 id=359 data-nosnippet>359</a><span class="doccomment">/// Determines if a message logged at the specified level in that module will
<a href=#360 id=360 data-nosnippet>360</a>/// be logged.
<a href=#361 id=361 data-nosnippet>361</a>///
<a href=#362 id=362 data-nosnippet>362</a>/// This can be used to avoid expensive computation of log message arguments if
<a href=#363 id=363 data-nosnippet>363</a>/// the message would be ignored anyway.
<a href=#364 id=364 data-nosnippet>364</a>///
<a href=#365 id=365 data-nosnippet>365</a>/// # Examples
<a href=#366 id=366 data-nosnippet>366</a>///
<a href=#367 id=367 data-nosnippet>367</a>/// ```
<a href=#368 id=368 data-nosnippet>368</a>/// use log::{debug, log_enabled, Level};
<a href=#369 id=369 data-nosnippet>369</a>///
<a href=#370 id=370 data-nosnippet>370</a>/// # struct Data { x: u32, y: u32 }
<a href=#371 id=371 data-nosnippet>371</a>/// # fn expensive_call() -&gt; Data { Data { x: 0, y: 0 } }
<a href=#372 id=372 data-nosnippet>372</a>/// # let my_logger = log::__private_api::GlobalLogger;
<a href=#373 id=373 data-nosnippet>373</a>/// if log_enabled!(Level::Debug) {
<a href=#374 id=374 data-nosnippet>374</a>/// let data = expensive_call();
<a href=#375 id=375 data-nosnippet>375</a>/// debug!("expensive debug data: {} {}", data.x, data.y);
<a href=#376 id=376 data-nosnippet>376</a>/// }
<a href=#377 id=377 data-nosnippet>377</a>///
<a href=#378 id=378 data-nosnippet>378</a>/// if log_enabled!(target: "Global", Level::Debug) {
<a href=#379 id=379 data-nosnippet>379</a>/// let data = expensive_call();
<a href=#380 id=380 data-nosnippet>380</a>/// debug!(target: "Global", "expensive debug data: {} {}", data.x, data.y);
<a href=#381 id=381 data-nosnippet>381</a>/// }
<a href=#382 id=382 data-nosnippet>382</a>///
<a href=#383 id=383 data-nosnippet>383</a>/// if log_enabled!(logger: my_logger, Level::Debug) {
<a href=#384 id=384 data-nosnippet>384</a>/// let data = expensive_call();
<a href=#385 id=385 data-nosnippet>385</a>/// debug!(target: "Global", "expensive debug data: {} {}", data.x, data.y);
<a href=#386 id=386 data-nosnippet>386</a>/// }
<a href=#387 id=387 data-nosnippet>387</a>/// ```
<a href=#388 id=388 data-nosnippet>388</a>///
<a href=#389 id=389 data-nosnippet>389</a>/// This macro accepts the same `target` and `logger` arguments as [`macro@log`].
<a href=#390 id=390 data-nosnippet>390</a></span><span class="attr">#[macro_export]
<a href=#391 id=391 data-nosnippet>391</a></span><span class="macro">macro_rules!</span> log_enabled {
<a href=#392 id=392 data-nosnippet>392</a> <span class="comment">// log_enabled!(logger: my_logger, target: "my_target", Level::Info)
<a href=#393 id=393 data-nosnippet>393</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, target: <span class="macro-nonterminal">$target</span>:expr, <span class="macro-nonterminal">$lvl</span>:expr) =&gt; ({
<a href=#394 id=394 data-nosnippet>394</a> <span class="macro-nonterminal">$crate::__log_enabled</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>), target: <span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$lvl</span>)
<a href=#395 id=395 data-nosnippet>395</a> });
<a href=#396 id=396 data-nosnippet>396</a>
<a href=#397 id=397 data-nosnippet>397</a> <span class="comment">// log_enabled!(logger: my_logger, Level::Info)
<a href=#398 id=398 data-nosnippet>398</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, <span class="macro-nonterminal">$lvl</span>:expr) =&gt; ({
<a href=#399 id=399 data-nosnippet>399</a> <span class="macro-nonterminal">$crate::__log_enabled</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(<span class="macro-nonterminal">$logger</span>), target: <span class="macro-nonterminal">$crate::__private_api::module_path</span>!(), <span class="macro-nonterminal">$lvl</span>)
<a href=#400 id=400 data-nosnippet>400</a> });
<a href=#401 id=401 data-nosnippet>401</a>
<a href=#402 id=402 data-nosnippet>402</a> <span class="comment">// log_enabled!(target: "my_target", Level::Info)
<a href=#403 id=403 data-nosnippet>403</a> </span>(target: <span class="macro-nonterminal">$target</span>:expr, <span class="macro-nonterminal">$lvl</span>:expr) =&gt; ({
<a href=#404 id=404 data-nosnippet>404</a> <span class="macro-nonterminal">$crate::__log_enabled</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(__log_global_logger), target: <span class="macro-nonterminal">$target</span>, <span class="macro-nonterminal">$lvl</span>)
<a href=#405 id=405 data-nosnippet>405</a> });
<a href=#406 id=406 data-nosnippet>406</a>
<a href=#407 id=407 data-nosnippet>407</a> <span class="comment">// log_enabled!(Level::Info)
<a href=#408 id=408 data-nosnippet>408</a> </span>(<span class="macro-nonterminal">$lvl</span>:expr) =&gt; ({
<a href=#409 id=409 data-nosnippet>409</a> <span class="macro-nonterminal">$crate::__log_enabled</span>!(logger: <span class="macro-nonterminal">$crate::__log_logger</span>!(__log_global_logger), target: <span class="macro-nonterminal">$crate::__private_api::module_path</span>!(), <span class="macro-nonterminal">$lvl</span>)
<a href=#410 id=410 data-nosnippet>410</a> });
<a href=#411 id=411 data-nosnippet>411</a>}
<a href=#412 id=412 data-nosnippet>412</a>
<a href=#413 id=413 data-nosnippet>413</a><span class="attr">#[doc(hidden)]
<a href=#414 id=414 data-nosnippet>414</a>#[macro_export]
<a href=#415 id=415 data-nosnippet>415</a></span><span class="macro">macro_rules!</span> __log_enabled {
<a href=#416 id=416 data-nosnippet>416</a> <span class="comment">// log_enabled!(logger: my_logger, target: "my_target", Level::Info)
<a href=#417 id=417 data-nosnippet>417</a> </span>(logger: <span class="macro-nonterminal">$logger</span>:expr, target: <span class="macro-nonterminal">$target</span>:expr, <span class="macro-nonterminal">$lvl</span>:expr) =&gt; {{
<a href=#418 id=418 data-nosnippet>418</a> <span class="kw">let </span>lvl = <span class="macro-nonterminal">$lvl</span>;
<a href=#419 id=419 data-nosnippet>419</a> lvl &lt;= <span class="macro-nonterminal">$crate::STATIC_MAX_LEVEL
<a href=#420 id=420 data-nosnippet>420</a> </span>&amp;&amp; lvl &lt;= <span class="macro-nonterminal">$crate::max_level</span>()
<a href=#421 id=421 data-nosnippet>421</a> &amp;&amp; <span class="macro-nonterminal">$crate::__private_api::enabled</span>(<span class="macro-nonterminal">$logger</span>, lvl, <span class="macro-nonterminal">$target</span>)
<a href=#422 id=422 data-nosnippet>422</a> }};
<a href=#423 id=423 data-nosnippet>423</a>}
<a href=#424 id=424 data-nosnippet>424</a>
<a href=#425 id=425 data-nosnippet>425</a><span class="comment">// Determine the logger to use, and whether to take it by-value or by reference
<a href=#426 id=426 data-nosnippet>426</a>
<a href=#427 id=427 data-nosnippet>427</a></span><span class="attr">#[doc(hidden)]
<a href=#428 id=428 data-nosnippet>428</a>#[macro_export]
<a href=#429 id=429 data-nosnippet>429</a></span><span class="macro">macro_rules!</span> __log_logger {
<a href=#430 id=430 data-nosnippet>430</a> (__log_global_logger) =&gt; {{
<a href=#431 id=431 data-nosnippet>431</a> <span class="macro-nonterminal">$crate::__private_api::GlobalLogger
<a href=#432 id=432 data-nosnippet>432</a> </span>}};
<a href=#433 id=433 data-nosnippet>433</a>
<a href=#434 id=434 data-nosnippet>434</a> (<span class="macro-nonterminal">$logger</span>:expr) =&gt; {{
<a href=#435 id=435 data-nosnippet>435</a> <span class="kw-2">&amp;</span>(<span class="macro-nonterminal">$logger</span>)
<a href=#436 id=436 data-nosnippet>436</a> }};
<a href=#437 id=437 data-nosnippet>437</a>}
<a href=#438 id=438 data-nosnippet>438</a>
<a href=#439 id=439 data-nosnippet>439</a><span class="comment">// These macros use a pattern of #[cfg]s to produce nicer error
<a href=#440 id=440 data-nosnippet>440</a>// messages when log features aren't available
<a href=#441 id=441 data-nosnippet>441</a>
<a href=#442 id=442 data-nosnippet>442</a></span><span class="attr">#[doc(hidden)]
<a href=#443 id=443 data-nosnippet>443</a>#[macro_export]
<a href=#444 id=444 data-nosnippet>444</a>#[cfg(feature = <span class="string">"kv"</span>)]
<a href=#445 id=445 data-nosnippet>445</a></span><span class="macro">macro_rules!</span> __log_key {
<a href=#446 id=446 data-nosnippet>446</a> <span class="comment">// key1 = 42
<a href=#447 id=447 data-nosnippet>447</a> </span>($(<span class="macro-nonterminal">$args</span>:ident)<span class="kw-2">*</span>) =&gt; {
<a href=#448 id=448 data-nosnippet>448</a> <span class="macro-nonterminal">$crate::__private_api::stringify</span>!($(<span class="macro-nonterminal">$args</span>)<span class="kw-2">*</span>)
<a href=#449 id=449 data-nosnippet>449</a> };
<a href=#450 id=450 data-nosnippet>450</a> <span class="comment">// "key1" = 42
<a href=#451 id=451 data-nosnippet>451</a> </span>($(<span class="macro-nonterminal">$args</span>:expr)<span class="kw-2">*</span>) =&gt; {
<a href=#452 id=452 data-nosnippet>452</a> $(<span class="macro-nonterminal">$args</span>)*
<a href=#453 id=453 data-nosnippet>453</a> };
<a href=#454 id=454 data-nosnippet>454</a>}
<a href=#455 id=455 data-nosnippet>455</a>
<a href=#456 id=456 data-nosnippet>456</a><span class="attr">#[doc(hidden)]
<a href=#457 id=457 data-nosnippet>457</a>#[macro_export]
<a href=#458 id=458 data-nosnippet>458</a>#[cfg(not(feature = <span class="string">"kv"</span>))]
<a href=#459 id=459 data-nosnippet>459</a></span><span class="macro">macro_rules!</span> __log_key {
<a href=#460 id=460 data-nosnippet>460</a> ($(<span class="macro-nonterminal">$args</span>:tt)<span class="kw-2">*</span>) =&gt; {
<a href=#461 id=461 data-nosnippet>461</a> <span class="macro">compile_error!</span>(<span class="string">"key value support requires the `kv` feature of `log`"</span>)
<a href=#462 id=462 data-nosnippet>462</a> };
<a href=#463 id=463 data-nosnippet>463</a>}
<a href=#464 id=464 data-nosnippet>464</a>
<a href=#465 id=465 data-nosnippet>465</a><span class="attr">#[doc(hidden)]
<a href=#466 id=466 data-nosnippet>466</a>#[macro_export]
<a href=#467 id=467 data-nosnippet>467</a>#[cfg(feature = <span class="string">"kv"</span>)]
<a href=#468 id=468 data-nosnippet>468</a></span><span class="macro">macro_rules!</span> __log_value {
<a href=#469 id=469 data-nosnippet>469</a> <span class="comment">// Entrypoint
<a href=#470 id=470 data-nosnippet>470</a> </span>(<span class="macro-nonterminal">$key</span>:tt = <span class="macro-nonterminal">$args</span>:expr) =&gt; {
<a href=#471 id=471 data-nosnippet>471</a> <span class="macro-nonterminal">$crate::__log_value</span>!((<span class="macro-nonterminal">$args</span>):value)
<a href=#472 id=472 data-nosnippet>472</a> };
<a href=#473 id=473 data-nosnippet>473</a> (<span class="macro-nonterminal">$key</span>:tt :<span class="macro-nonterminal">$capture</span>:tt = <span class="macro-nonterminal">$args</span>:expr) =&gt; {
<a href=#474 id=474 data-nosnippet>474</a> <span class="macro-nonterminal">$crate::__log_value</span>!((<span class="macro-nonterminal">$args</span>):<span class="macro-nonterminal">$capture</span>)
<a href=#475 id=475 data-nosnippet>475</a> };
<a href=#476 id=476 data-nosnippet>476</a> (<span class="macro-nonterminal">$key</span>:ident =) =&gt; {
<a href=#477 id=477 data-nosnippet>477</a> <span class="macro-nonterminal">$crate::__log_value</span>!((<span class="macro-nonterminal">$key</span>):value)
<a href=#478 id=478 data-nosnippet>478</a> };
<a href=#479 id=479 data-nosnippet>479</a> (<span class="macro-nonterminal">$key</span>:ident :<span class="macro-nonterminal">$capture</span>:tt =) =&gt; {
<a href=#480 id=480 data-nosnippet>480</a> <span class="macro-nonterminal">$crate::__log_value</span>!((<span class="macro-nonterminal">$key</span>):<span class="macro-nonterminal">$capture</span>)
<a href=#481 id=481 data-nosnippet>481</a> };
<a href=#482 id=482 data-nosnippet>482</a> <span class="comment">// ToValue
<a href=#483 id=483 data-nosnippet>483</a> </span>((<span class="macro-nonterminal">$args</span>:expr):value) =&gt; {
<a href=#484 id=484 data-nosnippet>484</a> <span class="macro-nonterminal">$crate::__private_api::capture_to_value</span>(&amp;&amp;<span class="macro-nonterminal">$args</span>)
<a href=#485 id=485 data-nosnippet>485</a> };
<a href=#486 id=486 data-nosnippet>486</a> <span class="comment">// Debug
<a href=#487 id=487 data-nosnippet>487</a> </span>((<span class="macro-nonterminal">$args</span>:expr):<span class="question-mark">?</span>) =&gt; {
<a href=#488 id=488 data-nosnippet>488</a> <span class="macro-nonterminal">$crate::__private_api::capture_debug</span>(&amp;&amp;<span class="macro-nonterminal">$args</span>)
<a href=#489 id=489 data-nosnippet>489</a> };
<a href=#490 id=490 data-nosnippet>490</a> ((<span class="macro-nonterminal">$args</span>:expr):debug) =&gt; {
<a href=#491 id=491 data-nosnippet>491</a> <span class="macro-nonterminal">$crate::__private_api::capture_debug</span>(&amp;&amp;<span class="macro-nonterminal">$args</span>)
<a href=#492 id=492 data-nosnippet>492</a> };
<a href=#493 id=493 data-nosnippet>493</a> <span class="comment">// Display
<a href=#494 id=494 data-nosnippet>494</a> </span>((<span class="macro-nonterminal">$args</span>:expr):%) =&gt; {
<a href=#495 id=495 data-nosnippet>495</a> <span class="macro-nonterminal">$crate::__private_api::capture_display</span>(&amp;&amp;<span class="macro-nonterminal">$args</span>)
<a href=#496 id=496 data-nosnippet>496</a> };
<a href=#497 id=497 data-nosnippet>497</a> ((<span class="macro-nonterminal">$args</span>:expr):display) =&gt; {
<a href=#498 id=498 data-nosnippet>498</a> <span class="macro-nonterminal">$crate::__private_api::capture_display</span>(&amp;&amp;<span class="macro-nonterminal">$args</span>)
<a href=#499 id=499 data-nosnippet>499</a> };
<a href=#500 id=500 data-nosnippet>500</a> <span class="comment">//Error
<a href=#501 id=501 data-nosnippet>501</a> </span>((<span class="macro-nonterminal">$args</span>:expr):err) =&gt; {
<a href=#502 id=502 data-nosnippet>502</a> <span class="macro-nonterminal">$crate::__log_value_error</span>!(<span class="macro-nonterminal">$args</span>)
<a href=#503 id=503 data-nosnippet>503</a> };
<a href=#504 id=504 data-nosnippet>504</a> <span class="comment">// sval::Value
<a href=#505 id=505 data-nosnippet>505</a> </span>((<span class="macro-nonterminal">$args</span>:expr):sval) =&gt; {
<a href=#506 id=506 data-nosnippet>506</a> <span class="macro-nonterminal">$crate::__log_value_sval</span>!(<span class="macro-nonterminal">$args</span>)
<a href=#507 id=507 data-nosnippet>507</a> };
<a href=#508 id=508 data-nosnippet>508</a> <span class="comment">// serde::Serialize
<a href=#509 id=509 data-nosnippet>509</a> </span>((<span class="macro-nonterminal">$args</span>:expr):serde) =&gt; {
<a href=#510 id=510 data-nosnippet>510</a> <span class="macro-nonterminal">$crate::__log_value_serde</span>!(<span class="macro-nonterminal">$args</span>)
<a href=#511 id=511 data-nosnippet>511</a> };
<a href=#512 id=512 data-nosnippet>512</a>}
<a href=#513 id=513 data-nosnippet>513</a>
<a href=#514 id=514 data-nosnippet>514</a><span class="attr">#[doc(hidden)]
<a href=#515 id=515 data-nosnippet>515</a>#[macro_export]
<a href=#516 id=516 data-nosnippet>516</a>#[cfg(not(feature = <span class="string">"kv"</span>))]
<a href=#517 id=517 data-nosnippet>517</a></span><span class="macro">macro_rules!</span> __log_value {
<a href=#518 id=518 data-nosnippet>518</a> ($(<span class="macro-nonterminal">$args</span>:tt)<span class="kw-2">*</span>) =&gt; {
<a href=#519 id=519 data-nosnippet>519</a> <span class="macro">compile_error!</span>(<span class="string">"key value support requires the `kv` feature of `log`"</span>)
<a href=#520 id=520 data-nosnippet>520</a> };
<a href=#521 id=521 data-nosnippet>521</a>}
<a href=#522 id=522 data-nosnippet>522</a>
<a href=#523 id=523 data-nosnippet>523</a><span class="attr">#[doc(hidden)]
<a href=#524 id=524 data-nosnippet>524</a>#[macro_export]
<a href=#525 id=525 data-nosnippet>525</a>#[cfg(feature = <span class="string">"kv_sval"</span>)]
<a href=#526 id=526 data-nosnippet>526</a></span><span class="macro">macro_rules!</span> __log_value_sval {
<a href=#527 id=527 data-nosnippet>527</a> (<span class="macro-nonterminal">$args</span>:expr) =&gt; {
<a href=#528 id=528 data-nosnippet>528</a> <span class="macro-nonterminal">$crate::__private_api::capture_sval</span>(&amp;&amp;<span class="macro-nonterminal">$args</span>)
<a href=#529 id=529 data-nosnippet>529</a> };
<a href=#530 id=530 data-nosnippet>530</a>}
<a href=#531 id=531 data-nosnippet>531</a>
<a href=#532 id=532 data-nosnippet>532</a><span class="attr">#[doc(hidden)]
<a href=#533 id=533 data-nosnippet>533</a>#[macro_export]
<a href=#534 id=534 data-nosnippet>534</a>#[cfg(not(feature = <span class="string">"kv_sval"</span>))]
<a href=#535 id=535 data-nosnippet>535</a></span><span class="macro">macro_rules!</span> __log_value_sval {
<a href=#536 id=536 data-nosnippet>536</a> (<span class="macro-nonterminal">$args</span>:expr) =&gt; {
<a href=#537 id=537 data-nosnippet>537</a> <span class="macro">compile_error!</span>(<span class="string">"capturing values as `sval::Value` requites the `kv_sval` feature of `log`"</span>)
<a href=#538 id=538 data-nosnippet>538</a> };
<a href=#539 id=539 data-nosnippet>539</a>}
<a href=#540 id=540 data-nosnippet>540</a>
<a href=#541 id=541 data-nosnippet>541</a><span class="attr">#[doc(hidden)]
<a href=#542 id=542 data-nosnippet>542</a>#[macro_export]
<a href=#543 id=543 data-nosnippet>543</a>#[cfg(feature = <span class="string">"kv_serde"</span>)]
<a href=#544 id=544 data-nosnippet>544</a></span><span class="macro">macro_rules!</span> __log_value_serde {
<a href=#545 id=545 data-nosnippet>545</a> (<span class="macro-nonterminal">$args</span>:expr) =&gt; {
<a href=#546 id=546 data-nosnippet>546</a> <span class="macro-nonterminal">$crate::__private_api::capture_serde</span>(&amp;&amp;<span class="macro-nonterminal">$args</span>)
<a href=#547 id=547 data-nosnippet>547</a> };
<a href=#548 id=548 data-nosnippet>548</a>}
<a href=#549 id=549 data-nosnippet>549</a>
<a href=#550 id=550 data-nosnippet>550</a><span class="attr">#[doc(hidden)]
<a href=#551 id=551 data-nosnippet>551</a>#[macro_export]
<a href=#552 id=552 data-nosnippet>552</a>#[cfg(not(feature = <span class="string">"kv_serde"</span>))]
<a href=#553 id=553 data-nosnippet>553</a></span><span class="macro">macro_rules!</span> __log_value_serde {
<a href=#554 id=554 data-nosnippet>554</a> (<span class="macro-nonterminal">$args</span>:expr) =&gt; {
<a href=#555 id=555 data-nosnippet>555</a> <span class="macro">compile_error!</span>(
<a href=#556 id=556 data-nosnippet>556</a> <span class="string">"capturing values as `serde::Serialize` requites the `kv_serde` feature of `log`"
<a href=#557 id=557 data-nosnippet>557</a> </span>)
<a href=#558 id=558 data-nosnippet>558</a> };
<a href=#559 id=559 data-nosnippet>559</a>}
<a href=#560 id=560 data-nosnippet>560</a>
<a href=#561 id=561 data-nosnippet>561</a><span class="attr">#[doc(hidden)]
<a href=#562 id=562 data-nosnippet>562</a>#[macro_export]
<a href=#563 id=563 data-nosnippet>563</a>#[cfg(feature = <span class="string">"kv_std"</span>)]
<a href=#564 id=564 data-nosnippet>564</a></span><span class="macro">macro_rules!</span> __log_value_error {
<a href=#565 id=565 data-nosnippet>565</a> (<span class="macro-nonterminal">$args</span>:expr) =&gt; {
<a href=#566 id=566 data-nosnippet>566</a> <span class="macro-nonterminal">$crate::__private_api::capture_error</span>(<span class="kw-2">&amp;</span><span class="macro-nonterminal">$args</span>)
<a href=#567 id=567 data-nosnippet>567</a> };
<a href=#568 id=568 data-nosnippet>568</a>}
<a href=#569 id=569 data-nosnippet>569</a>
<a href=#570 id=570 data-nosnippet>570</a><span class="attr">#[doc(hidden)]
<a href=#571 id=571 data-nosnippet>571</a>#[macro_export]
<a href=#572 id=572 data-nosnippet>572</a>#[cfg(not(feature = <span class="string">"kv_std"</span>))]
<a href=#573 id=573 data-nosnippet>573</a></span><span class="macro">macro_rules!</span> __log_value_error {
<a href=#574 id=574 data-nosnippet>574</a> (<span class="macro-nonterminal">$args</span>:expr) =&gt; {
<a href=#575 id=575 data-nosnippet>575</a> <span class="macro">compile_error!</span>(
<a href=#576 id=576 data-nosnippet>576</a> <span class="string">"capturing values as `std::error::Error` requites the `kv_std` feature of `log`"
<a href=#577 id=577 data-nosnippet>577</a> </span>)
<a href=#578 id=578 data-nosnippet>578</a> };
<a href=#579 id=579 data-nosnippet>579</a>}
</code></pre></div></section></main></body></html>