Adding large folders

This commit is contained in:
2026-02-26 12:00:21 -05:00
parent 5400d82acd
commit 49701c85ad
47332 changed files with 1942573 additions and 0 deletions
@@ -0,0 +1,281 @@
<!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/arg_enum_proc_macro-0.3.4/src/lib.rs`."><title>lib.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="arg_enum_proc_macro" 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="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></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">arg_enum_proc_macro/</div>lib.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">//! # arg_enum_proc_macro
<a href=#2 id=2 data-nosnippet>2</a>//!
<a href=#3 id=3 data-nosnippet>3</a>//! This crate consists in a procedural macro derive that provides the
<a href=#4 id=4 data-nosnippet>4</a>//! same implementations that clap the [`clap::arg_enum`][1] macro provides:
<a href=#5 id=5 data-nosnippet>5</a>//! [`std::fmt::Display`], [`std::str::FromStr`] and a `variants()` function.
<a href=#6 id=6 data-nosnippet>6</a>//!
<a href=#7 id=7 data-nosnippet>7</a>//! By using a procedural macro it allows documenting the enum fields
<a href=#8 id=8 data-nosnippet>8</a>//! correctly and avoids the requirement of expanding the macro to use
<a href=#9 id=9 data-nosnippet>9</a>//! the structure with [cbindgen](https://crates.io/crates/cbindgen).
<a href=#10 id=10 data-nosnippet>10</a>//!
<a href=#11 id=11 data-nosnippet>11</a>//! [1]: https://docs.rs/clap/2.32.0/clap/macro.arg_enum.html
<a href=#12 id=12 data-nosnippet>12</a>//!
<a href=#13 id=13 data-nosnippet>13</a>
<a href=#14 id=14 data-nosnippet>14</a></span><span class="attr">#![recursion_limit = <span class="string">"128"</span>]
<a href=#15 id=15 data-nosnippet>15</a>
<a href=#16 id=16 data-nosnippet>16</a></span><span class="kw">extern crate </span>proc_macro;
<a href=#17 id=17 data-nosnippet>17</a>
<a href=#18 id=18 data-nosnippet>18</a><span class="kw">use </span>proc_macro2::{Literal, Punct, Span, TokenStream, TokenTree};
<a href=#19 id=19 data-nosnippet>19</a><span class="kw">use </span>quote::{quote, quote_spanned};
<a href=#20 id=20 data-nosnippet>20</a><span class="kw">use </span>std::iter::FromIterator;
<a href=#21 id=21 data-nosnippet>21</a>
<a href=#22 id=22 data-nosnippet>22</a><span class="kw">use </span>syn::Lit::{<span class="self">self</span>};
<a href=#23 id=23 data-nosnippet>23</a><span class="kw">use </span>syn::Meta::{<span class="self">self</span>};
<a href=#24 id=24 data-nosnippet>24</a><span class="kw">use </span>syn::{parse_macro_input, Data, DeriveInput, Expr, ExprLit, Ident, LitStr};
<a href=#25 id=25 data-nosnippet>25</a>
<a href=#26 id=26 data-nosnippet>26</a><span class="doccomment">/// Implement [`std::fmt::Display`], [`std::str::FromStr`] and `variants()`.
<a href=#27 id=27 data-nosnippet>27</a>///
<a href=#28 id=28 data-nosnippet>28</a>/// The invocation:
<a href=#29 id=29 data-nosnippet>29</a>/// ``` no_run
<a href=#30 id=30 data-nosnippet>30</a>/// use arg_enum_proc_macro::ArgEnum;
<a href=#31 id=31 data-nosnippet>31</a>///
<a href=#32 id=32 data-nosnippet>32</a>/// #[derive(ArgEnum)]
<a href=#33 id=33 data-nosnippet>33</a>/// enum Foo {
<a href=#34 id=34 data-nosnippet>34</a>/// A,
<a href=#35 id=35 data-nosnippet>35</a>/// /// Describe B
<a href=#36 id=36 data-nosnippet>36</a>/// #[arg_enum(alias = "Bar")]
<a href=#37 id=37 data-nosnippet>37</a>/// B,
<a href=#38 id=38 data-nosnippet>38</a>/// /// Describe C
<a href=#39 id=39 data-nosnippet>39</a>/// /// Multiline
<a href=#40 id=40 data-nosnippet>40</a>/// #[arg_enum(name = "Baz")]
<a href=#41 id=41 data-nosnippet>41</a>/// C,
<a href=#42 id=42 data-nosnippet>42</a>/// }
<a href=#43 id=43 data-nosnippet>43</a>/// ```
<a href=#44 id=44 data-nosnippet>44</a>///
<a href=#45 id=45 data-nosnippet>45</a>/// produces:
<a href=#46 id=46 data-nosnippet>46</a>/// ``` no_run
<a href=#47 id=47 data-nosnippet>47</a>/// enum Foo {
<a href=#48 id=48 data-nosnippet>48</a>/// A,
<a href=#49 id=49 data-nosnippet>49</a>/// B,
<a href=#50 id=50 data-nosnippet>50</a>/// C
<a href=#51 id=51 data-nosnippet>51</a>/// }
<a href=#52 id=52 data-nosnippet>52</a>/// impl ::std::str::FromStr for Foo {
<a href=#53 id=53 data-nosnippet>53</a>/// type Err = String;
<a href=#54 id=54 data-nosnippet>54</a>///
<a href=#55 id=55 data-nosnippet>55</a>/// fn from_str(s: &amp;str) -&gt; ::std::result::Result&lt;Self,Self::Err&gt; {
<a href=#56 id=56 data-nosnippet>56</a>/// match s {
<a href=#57 id=57 data-nosnippet>57</a>/// "A" | _ if s.eq_ignore_ascii_case("A") =&gt; Ok(Foo::A),
<a href=#58 id=58 data-nosnippet>58</a>/// "B" | _ if s.eq_ignore_ascii_case("B") =&gt; Ok(Foo::B),
<a href=#59 id=59 data-nosnippet>59</a>/// "Bar" | _ if s.eq_ignore_ascii_case("Bar") =&gt; Ok(Foo::B),
<a href=#60 id=60 data-nosnippet>60</a>/// "Baz" | _ if s.eq_ignore_ascii_case("Baz") =&gt; Ok(Foo::C),
<a href=#61 id=61 data-nosnippet>61</a>/// _ =&gt; Err({
<a href=#62 id=62 data-nosnippet>62</a>/// let v = vec![ "A", "B", "Bar", "Baz" ];
<a href=#63 id=63 data-nosnippet>63</a>/// format!("valid values: {}", v.join(" ,"))
<a href=#64 id=64 data-nosnippet>64</a>/// }),
<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>/// impl ::std::fmt::Display for Foo {
<a href=#69 id=69 data-nosnippet>69</a>/// fn fmt(&amp;self, f: &amp;mut ::std::fmt::Formatter&lt;'_&gt;) -&gt; ::std::fmt::Result {
<a href=#70 id=70 data-nosnippet>70</a>/// match *self {
<a href=#71 id=71 data-nosnippet>71</a>/// Foo::A =&gt; write!(f, "A"),
<a href=#72 id=72 data-nosnippet>72</a>/// Foo::B =&gt; write!(f, "B"),
<a href=#73 id=73 data-nosnippet>73</a>/// Foo::C =&gt; write!(f, "C"),
<a href=#74 id=74 data-nosnippet>74</a>/// }
<a href=#75 id=75 data-nosnippet>75</a>/// }
<a href=#76 id=76 data-nosnippet>76</a>/// }
<a href=#77 id=77 data-nosnippet>77</a>///
<a href=#78 id=78 data-nosnippet>78</a>/// impl Foo {
<a href=#79 id=79 data-nosnippet>79</a>/// /// Returns an array of valid values which can be converted into this enum.
<a href=#80 id=80 data-nosnippet>80</a>/// #[allow(dead_code)]
<a href=#81 id=81 data-nosnippet>81</a>/// pub fn variants() -&gt; [&amp;'static str; 4] {
<a href=#82 id=82 data-nosnippet>82</a>/// [ "A", "B", "Bar", "Baz", ]
<a href=#83 id=83 data-nosnippet>83</a>/// }
<a href=#84 id=84 data-nosnippet>84</a>/// #[allow(dead_code)]
<a href=#85 id=85 data-nosnippet>85</a>/// pub fn descriptions() -&gt; [(&amp;'static [&amp;'static str], &amp;'static [&amp;'static str]) ;3] {
<a href=#86 id=86 data-nosnippet>86</a>/// [(&amp;["A"], &amp;[]),
<a href=#87 id=87 data-nosnippet>87</a>/// (&amp;["B", "Bar"], &amp;[" Describe B"]),
<a href=#88 id=88 data-nosnippet>88</a>/// (&amp;["Baz"], &amp;[" Describe C", " Multiline"]),]
<a href=#89 id=89 data-nosnippet>89</a>/// }
<a href=#90 id=90 data-nosnippet>90</a>/// }
<a href=#91 id=91 data-nosnippet>91</a>/// ```
<a href=#92 id=92 data-nosnippet>92</a></span><span class="attr">#[proc_macro_derive(ArgEnum, attributes(arg_enum))]
<a href=#93 id=93 data-nosnippet>93</a></span><span class="kw">pub fn </span>arg_enum(items: proc_macro::TokenStream) -&gt; proc_macro::TokenStream {
<a href=#94 id=94 data-nosnippet>94</a> <span class="kw">let </span>input = <span class="macro">parse_macro_input!</span>(items <span class="kw">as </span>DeriveInput);
<a href=#95 id=95 data-nosnippet>95</a>
<a href=#96 id=96 data-nosnippet>96</a> <span class="kw">let </span>name = input.ident;
<a href=#97 id=97 data-nosnippet>97</a> <span class="kw">let </span>variants = <span class="kw">if let </span>Data::Enum(data) = input.data {
<a href=#98 id=98 data-nosnippet>98</a> data.variants
<a href=#99 id=99 data-nosnippet>99</a> } <span class="kw">else </span>{
<a href=#100 id=100 data-nosnippet>100</a> <span class="macro">panic!</span>(<span class="string">"Only enum supported"</span>);
<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">let </span>all_variants: Vec&lt;(TokenTree, <span class="kw-2">&amp;</span>Ident)&gt; = variants
<a href=#104 id=104 data-nosnippet>104</a> .iter()
<a href=#105 id=105 data-nosnippet>105</a> .flat_map(|item| {
<a href=#106 id=106 data-nosnippet>106</a> <span class="kw">let </span>id = <span class="kw-2">&amp;</span>item.ident;
<a href=#107 id=107 data-nosnippet>107</a> <span class="kw">if </span>!item.fields.is_empty() {
<a href=#108 id=108 data-nosnippet>108</a> <span class="macro">panic!</span>(
<a href=#109 id=109 data-nosnippet>109</a> <span class="string">"Only enum with unit variants are supported! \n\
<a href=#110 id=110 data-nosnippet>110</a> Variant {}::{} is not an unit variant"</span>,
<a href=#111 id=111 data-nosnippet>111</a> name,
<a href=#112 id=112 data-nosnippet>112</a> <span class="kw-2">&amp;</span>id.to_string()
<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> <span class="kw">let </span>lit: TokenTree = Literal::string(<span class="kw-2">&amp;</span>id.to_string()).into();
<a href=#117 id=117 data-nosnippet>117</a> <span class="kw">let </span><span class="kw-2">mut </span>all_lits = <span class="macro">vec!</span>[(lit, id)];
<a href=#118 id=118 data-nosnippet>118</a> item.attrs
<a href=#119 id=119 data-nosnippet>119</a> .iter()
<a href=#120 id=120 data-nosnippet>120</a> .filter(|attr| attr.path().is_ident(<span class="string">"arg_enum"</span>))
<a href=#121 id=121 data-nosnippet>121</a> <span class="comment">// .flat_map(|attr| {
<a href=#122 id=122 data-nosnippet>122</a> </span>.for_each(|attr| {
<a href=#123 id=123 data-nosnippet>123</a> attr.parse_nested_meta(|meta| {
<a href=#124 id=124 data-nosnippet>124</a> <span class="kw">if </span>meta.path.is_ident(<span class="string">"alias"</span>) {
<a href=#125 id=125 data-nosnippet>125</a> <span class="kw">let </span>val = meta.value()<span class="question-mark">?</span>;
<a href=#126 id=126 data-nosnippet>126</a> <span class="kw">let </span>alias: Literal = val.parse()<span class="question-mark">?</span>;
<a href=#127 id=127 data-nosnippet>127</a> all_lits.push((alias.into(), id));
<a href=#128 id=128 data-nosnippet>128</a> }
<a href=#129 id=129 data-nosnippet>129</a> <span class="kw">if </span>meta.path.is_ident(<span class="string">"name"</span>) {
<a href=#130 id=130 data-nosnippet>130</a> <span class="kw">let </span>val = meta.value()<span class="question-mark">?</span>;
<a href=#131 id=131 data-nosnippet>131</a> <span class="kw">let </span>name: Literal = val.parse()<span class="question-mark">?</span>;
<a href=#132 id=132 data-nosnippet>132</a> all_lits[<span class="number">0</span>] = (name.into(), id);
<a href=#133 id=133 data-nosnippet>133</a> }
<a href=#134 id=134 data-nosnippet>134</a> <span class="prelude-val">Ok</span>(())
<a href=#135 id=135 data-nosnippet>135</a> })
<a href=#136 id=136 data-nosnippet>136</a> .unwrap();
<a href=#137 id=137 data-nosnippet>137</a> });
<a href=#138 id=138 data-nosnippet>138</a> all_lits.into_iter()
<a href=#139 id=139 data-nosnippet>139</a> })
<a href=#140 id=140 data-nosnippet>140</a> .collect();
<a href=#141 id=141 data-nosnippet>141</a>
<a href=#142 id=142 data-nosnippet>142</a> <span class="kw">let </span>len = all_variants.len();
<a href=#143 id=143 data-nosnippet>143</a>
<a href=#144 id=144 data-nosnippet>144</a> <span class="kw">let </span>from_str_match = all_variants.iter().flat_map(|(lit, id)| {
<a href=#145 id=145 data-nosnippet>145</a> <span class="kw">let </span>pat: TokenStream = <span class="macro">quote!</span> {
<a href=#146 id=146 data-nosnippet>146</a> #lit | <span class="kw">_ if </span>s.eq_ignore_ascii_case(#lit) =&gt; <span class="prelude-val">Ok</span>(#name::#id),
<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> pat.into_iter()
<a href=#150 id=150 data-nosnippet>150</a> });
<a href=#151 id=151 data-nosnippet>151</a>
<a href=#152 id=152 data-nosnippet>152</a> <span class="kw">let </span>from_str_match = TokenStream::from_iter(from_str_match);
<a href=#153 id=153 data-nosnippet>153</a>
<a href=#154 id=154 data-nosnippet>154</a> <span class="kw">let </span>all_descriptions: Vec&lt;(Vec&lt;TokenTree&gt;, Vec&lt;LitStr&gt;)&gt; = variants
<a href=#155 id=155 data-nosnippet>155</a> .iter()
<a href=#156 id=156 data-nosnippet>156</a> .map(|item| {
<a href=#157 id=157 data-nosnippet>157</a> <span class="kw">let </span>id = <span class="kw-2">&amp;</span>item.ident;
<a href=#158 id=158 data-nosnippet>158</a> <span class="kw">let </span>description = item
<a href=#159 id=159 data-nosnippet>159</a> .attrs
<a href=#160 id=160 data-nosnippet>160</a> .iter()
<a href=#161 id=161 data-nosnippet>161</a> .filter_map(|attr| {
<a href=#162 id=162 data-nosnippet>162</a> <span class="kw">let </span>expr = <span class="kw">match </span><span class="kw-2">&amp;</span>attr.meta {
<a href=#163 id=163 data-nosnippet>163</a> Meta::NameValue(name_value) <span class="kw">if </span>name_value.path.is_ident(<span class="string">"doc"</span>) =&gt; {
<a href=#164 id=164 data-nosnippet>164</a> <span class="prelude-val">Some</span>(name_value.value.to_owned())
<a href=#165 id=165 data-nosnippet>165</a> }
<a href=#166 id=166 data-nosnippet>166</a> <span class="kw">_ </span>=&gt;
<a href=#167 id=167 data-nosnippet>167</a> <span class="comment">// non #[doc = "..."] attributes are not our concern
<a href=#168 id=168 data-nosnippet>168</a> // we leave them for rustc to handle
<a href=#169 id=169 data-nosnippet>169</a> </span>{
<a href=#170 id=170 data-nosnippet>170</a> <span class="prelude-val">None
<a href=#171 id=171 data-nosnippet>171</a> </span>}
<a href=#172 id=172 data-nosnippet>172</a> };
<a href=#173 id=173 data-nosnippet>173</a>
<a href=#174 id=174 data-nosnippet>174</a> expr.and_then(|expr| {
<a href=#175 id=175 data-nosnippet>175</a> <span class="kw">if let </span>Expr::Lit(ExprLit {
<a href=#176 id=176 data-nosnippet>176</a> lit: Lit::Str(s), ..
<a href=#177 id=177 data-nosnippet>177</a> }) = expr
<a href=#178 id=178 data-nosnippet>178</a> {
<a href=#179 id=179 data-nosnippet>179</a> <span class="prelude-val">Some</span>(s)
<a href=#180 id=180 data-nosnippet>180</a> } <span class="kw">else </span>{
<a href=#181 id=181 data-nosnippet>181</a> <span class="prelude-val">None
<a href=#182 id=182 data-nosnippet>182</a> </span>}
<a href=#183 id=183 data-nosnippet>183</a> })
<a href=#184 id=184 data-nosnippet>184</a> })
<a href=#185 id=185 data-nosnippet>185</a> .collect();
<a href=#186 id=186 data-nosnippet>186</a> <span class="kw">let </span>lit: TokenTree = Literal::string(<span class="kw-2">&amp;</span>id.to_string()).into();
<a href=#187 id=187 data-nosnippet>187</a> <span class="kw">let </span><span class="kw-2">mut </span>all_names = <span class="macro">vec!</span>[lit];
<a href=#188 id=188 data-nosnippet>188</a> item.attrs
<a href=#189 id=189 data-nosnippet>189</a> .iter()
<a href=#190 id=190 data-nosnippet>190</a> .filter(|attr| attr.path().is_ident(<span class="string">"arg_enum"</span>))
<a href=#191 id=191 data-nosnippet>191</a> <span class="comment">// .flat_map(|attr| {
<a href=#192 id=192 data-nosnippet>192</a> </span>.for_each(|attr| {
<a href=#193 id=193 data-nosnippet>193</a> attr.parse_nested_meta(|meta| {
<a href=#194 id=194 data-nosnippet>194</a> <span class="kw">if </span>meta.path.is_ident(<span class="string">"alias"</span>) {
<a href=#195 id=195 data-nosnippet>195</a> <span class="kw">let </span>val = meta.value()<span class="question-mark">?</span>;
<a href=#196 id=196 data-nosnippet>196</a> <span class="kw">let </span>alias: Literal = val.parse()<span class="question-mark">?</span>;
<a href=#197 id=197 data-nosnippet>197</a> all_names.push(alias.into());
<a href=#198 id=198 data-nosnippet>198</a> }
<a href=#199 id=199 data-nosnippet>199</a> <span class="kw">if </span>meta.path.is_ident(<span class="string">"name"</span>) {
<a href=#200 id=200 data-nosnippet>200</a> <span class="kw">let </span>val = meta.value()<span class="question-mark">?</span>;
<a href=#201 id=201 data-nosnippet>201</a> <span class="kw">let </span>name: Literal = val.parse()<span class="question-mark">?</span>;
<a href=#202 id=202 data-nosnippet>202</a> all_names[<span class="number">0</span>] = name.into();
<a href=#203 id=203 data-nosnippet>203</a> }
<a href=#204 id=204 data-nosnippet>204</a> <span class="prelude-val">Ok</span>(())
<a href=#205 id=205 data-nosnippet>205</a> })
<a href=#206 id=206 data-nosnippet>206</a> .unwrap();
<a href=#207 id=207 data-nosnippet>207</a> });
<a href=#208 id=208 data-nosnippet>208</a>
<a href=#209 id=209 data-nosnippet>209</a> (all_names, description)
<a href=#210 id=210 data-nosnippet>210</a> })
<a href=#211 id=211 data-nosnippet>211</a> .collect();
<a href=#212 id=212 data-nosnippet>212</a>
<a href=#213 id=213 data-nosnippet>213</a> <span class="kw">let </span>display_match = variants.iter().flat_map(|item| {
<a href=#214 id=214 data-nosnippet>214</a> <span class="kw">let </span>id = <span class="kw-2">&amp;</span>item.ident;
<a href=#215 id=215 data-nosnippet>215</a> <span class="kw">let </span>lit: TokenTree = Literal::string(<span class="kw-2">&amp;</span>id.to_string()).into();
<a href=#216 id=216 data-nosnippet>216</a>
<a href=#217 id=217 data-nosnippet>217</a> <span class="kw">let </span>pat: TokenStream = <span class="macro">quote!</span> {
<a href=#218 id=218 data-nosnippet>218</a> #name::#id =&gt; <span class="macro">write!</span>(f, #lit),
<a href=#219 id=219 data-nosnippet>219</a> };
<a href=#220 id=220 data-nosnippet>220</a>
<a href=#221 id=221 data-nosnippet>221</a> pat.into_iter()
<a href=#222 id=222 data-nosnippet>222</a> });
<a href=#223 id=223 data-nosnippet>223</a>
<a href=#224 id=224 data-nosnippet>224</a> <span class="kw">let </span>display_match = TokenStream::from_iter(display_match);
<a href=#225 id=225 data-nosnippet>225</a>
<a href=#226 id=226 data-nosnippet>226</a> <span class="kw">let </span>comma: TokenTree = Punct::new(<span class="string">','</span>, proc_macro2::Spacing::Alone).into();
<a href=#227 id=227 data-nosnippet>227</a> <span class="kw">let </span>array_items = all_variants
<a href=#228 id=228 data-nosnippet>228</a> .iter()
<a href=#229 id=229 data-nosnippet>229</a> .flat_map(|(tok, _id)| <span class="macro">vec!</span>[tok.clone(), comma.clone()].into_iter());
<a href=#230 id=230 data-nosnippet>230</a>
<a href=#231 id=231 data-nosnippet>231</a> <span class="kw">let </span>array_items = TokenStream::from_iter(array_items);
<a href=#232 id=232 data-nosnippet>232</a>
<a href=#233 id=233 data-nosnippet>233</a> <span class="kw">let </span>array_descriptions = all_descriptions.iter().map(|(names, descr)| {
<a href=#234 id=234 data-nosnippet>234</a> <span class="macro">quote!</span> {
<a href=#235 id=235 data-nosnippet>235</a> (<span class="kw-2">&amp;</span>[ #(#names),* ], <span class="kw-2">&amp;</span>[ #(#descr),* ]),
<a href=#236 id=236 data-nosnippet>236</a> }
<a href=#237 id=237 data-nosnippet>237</a> });
<a href=#238 id=238 data-nosnippet>238</a> <span class="kw">let </span>array_descriptions = TokenStream::from_iter(array_descriptions);
<a href=#239 id=239 data-nosnippet>239</a>
<a href=#240 id=240 data-nosnippet>240</a> <span class="kw">let </span>len_descriptions = all_descriptions.len();
<a href=#241 id=241 data-nosnippet>241</a>
<a href=#242 id=242 data-nosnippet>242</a> <span class="kw">let </span>ret: TokenStream = <span class="macro">quote_spanned!</span> {
<a href=#243 id=243 data-nosnippet>243</a> Span::call_site() =&gt;
<a href=#244 id=244 data-nosnippet>244</a> <span class="kw">impl </span>::std::str::FromStr <span class="kw">for </span>#name {
<a href=#245 id=245 data-nosnippet>245</a> <span class="kw">type </span><span class="prelude-val">Err </span>= String;
<a href=#246 id=246 data-nosnippet>246</a>
<a href=#247 id=247 data-nosnippet>247</a> <span class="kw">fn </span>from_str(s: <span class="kw-2">&amp;</span>str) -&gt; ::std::result::Result&lt;<span class="self">Self</span>,<span class="self">Self</span>::Err&gt; {
<a href=#248 id=248 data-nosnippet>248</a> <span class="kw">match </span>s {
<a href=#249 id=249 data-nosnippet>249</a> #from_str_match
<a href=#250 id=250 data-nosnippet>250</a> <span class="kw">_ </span>=&gt; {
<a href=#251 id=251 data-nosnippet>251</a> <span class="kw">let </span>values = [ #array_items ];
<a href=#252 id=252 data-nosnippet>252</a>
<a href=#253 id=253 data-nosnippet>253</a> <span class="prelude-val">Err</span>(<span class="macro">format!</span>(<span class="string">"valid values: {}"</span>, values.join(<span class="string">" ,"</span>)))
<a href=#254 id=254 data-nosnippet>254</a> }
<a href=#255 id=255 data-nosnippet>255</a> }
<a href=#256 id=256 data-nosnippet>256</a> }
<a href=#257 id=257 data-nosnippet>257</a> }
<a href=#258 id=258 data-nosnippet>258</a> <span class="kw">impl </span>::std::fmt::Display <span class="kw">for </span>#name {
<a href=#259 id=259 data-nosnippet>259</a> <span class="kw">fn </span>fmt(<span class="kw-2">&amp;</span><span class="self">self</span>, f: <span class="kw-2">&amp;mut </span>::std::fmt::Formatter&lt;<span class="lifetime">'_</span>&gt;) -&gt; ::std::fmt::Result {
<a href=#260 id=260 data-nosnippet>260</a> <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
<a href=#261 id=261 data-nosnippet>261</a> #display_match
<a href=#262 id=262 data-nosnippet>262</a> }
<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="kw">impl </span>#name {
<a href=#266 id=266 data-nosnippet>266</a> <span class="attr">#[allow(dead_code)]
<a href=#267 id=267 data-nosnippet>267</a> </span><span class="doccomment">/// Returns an array of valid values which can be converted into this enum.
<a href=#268 id=268 data-nosnippet>268</a> </span><span class="kw">pub fn </span>variants() -&gt; [<span class="kw-2">&amp;</span><span class="lifetime">'static </span>str; #len] {
<a href=#269 id=269 data-nosnippet>269</a> [ #array_items ]
<a href=#270 id=270 data-nosnippet>270</a> }
<a href=#271 id=271 data-nosnippet>271</a> <span class="attr">#[allow(dead_code)]
<a href=#272 id=272 data-nosnippet>272</a> </span><span class="doccomment">/// Returns an array of touples (variants, description)
<a href=#273 id=273 data-nosnippet>273</a> </span><span class="kw">pub fn </span>descriptions() -&gt; [(<span class="kw-2">&amp;</span><span class="lifetime">'static </span>[<span class="kw-2">&amp;</span><span class="lifetime">'static </span>str], <span class="kw-2">&amp;</span><span class="lifetime">'static </span>[<span class="kw-2">&amp;</span><span class="lifetime">'static </span>str]); #len_descriptions] {
<a href=#274 id=274 data-nosnippet>274</a> [ #array_descriptions ]
<a href=#275 id=275 data-nosnippet>275</a> }
<a href=#276 id=276 data-nosnippet>276</a> }
<a href=#277 id=277 data-nosnippet>277</a> };
<a href=#278 id=278 data-nosnippet>278</a>
<a href=#279 id=279 data-nosnippet>279</a> ret.into()
<a href=#280 id=280 data-nosnippet>280</a>}
</code></pre></div></section></main></body></html>