| <!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 `crates/query-group-macro/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-77263533.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="query_group_macro" data-themes="" data-resource-suffix="" data-rustdoc-version="1.94.0 (4a4ef493e 2026-03-02)" data-channel="1.94.0" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-b897f86f.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-7bab91a1.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-ffcac47a.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">query_group_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">//! A macro that mimics the old Salsa-style `#[query_group]` macro. |
| <a href=#2 id=2 data-nosnippet>2</a> |
| <a href=#3 id=3 data-nosnippet>3</a></span><span class="kw">use </span>core::fmt; |
| <a href=#4 id=4 data-nosnippet>4</a><span class="kw">use </span>std::vec; |
| <a href=#5 id=5 data-nosnippet>5</a> |
| <a href=#6 id=6 data-nosnippet>6</a><span class="kw">use </span>proc_macro::TokenStream; |
| <a href=#7 id=7 data-nosnippet>7</a><span class="kw">use </span>proc_macro2::Span; |
| <a href=#8 id=8 data-nosnippet>8</a><span class="kw">use </span>queries::{ |
| <a href=#9 id=9 data-nosnippet>9</a> GeneratedInputStruct, InputQuery, InputSetter, InputSetterWithDurability, Intern, Lookup, |
| <a href=#10 id=10 data-nosnippet>10</a> Queries, SetterKind, TrackedQuery, Transparent, |
| <a href=#11 id=11 data-nosnippet>11</a>}; |
| <a href=#12 id=12 data-nosnippet>12</a><span class="kw">use </span>quote::{ToTokens, format_ident, quote}; |
| <a href=#13 id=13 data-nosnippet>13</a><span class="kw">use </span>syn::parse::{Parse, ParseStream}; |
| <a href=#14 id=14 data-nosnippet>14</a><span class="kw">use </span>syn::punctuated::Punctuated; |
| <a href=#15 id=15 data-nosnippet>15</a><span class="kw">use </span>syn::spanned::Spanned; |
| <a href=#16 id=16 data-nosnippet>16</a><span class="kw">use </span>syn::visit_mut::VisitMut; |
| <a href=#17 id=17 data-nosnippet>17</a><span class="kw">use </span>syn::{ |
| <a href=#18 id=18 data-nosnippet>18</a> Attribute, FnArg, ItemTrait, Path, Token, TraitItem, TraitItemFn, parse_quote, |
| <a href=#19 id=19 data-nosnippet>19</a> parse_quote_spanned, |
| <a href=#20 id=20 data-nosnippet>20</a>}; |
| <a href=#21 id=21 data-nosnippet>21</a> |
| <a href=#22 id=22 data-nosnippet>22</a><span class="kw">mod </span>queries; |
| <a href=#23 id=23 data-nosnippet>23</a> |
| <a href=#24 id=24 data-nosnippet>24</a><span class="attr">#[proc_macro_attribute] |
| <a href=#25 id=25 data-nosnippet>25</a></span><span class="kw">pub fn </span>query_group(args: TokenStream, input: TokenStream) -> TokenStream { |
| <a href=#26 id=26 data-nosnippet>26</a> <span class="kw">match </span>query_group_impl(args, input.clone()) { |
| <a href=#27 id=27 data-nosnippet>27</a> <span class="prelude-val">Ok</span>(tokens) => tokens, |
| <a href=#28 id=28 data-nosnippet>28</a> <span class="prelude-val">Err</span>(e) => token_stream_with_error(input, e), |
| <a href=#29 id=29 data-nosnippet>29</a> } |
| <a href=#30 id=30 data-nosnippet>30</a>} |
| <a href=#31 id=31 data-nosnippet>31</a> |
| <a href=#32 id=32 data-nosnippet>32</a><span class="attr">#[derive(Debug)] |
| <a href=#33 id=33 data-nosnippet>33</a></span><span class="kw">struct </span>InputStructField { |
| <a href=#34 id=34 data-nosnippet>34</a> name: proc_macro2::TokenStream, |
| <a href=#35 id=35 data-nosnippet>35</a> ty: proc_macro2::TokenStream, |
| <a href=#36 id=36 data-nosnippet>36</a>} |
| <a href=#37 id=37 data-nosnippet>37</a> |
| <a href=#38 id=38 data-nosnippet>38</a><span class="kw">impl </span>fmt::Display <span class="kw">for </span>InputStructField { |
| <a href=#39 id=39 data-nosnippet>39</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>std::fmt::Formatter<<span class="lifetime">'_</span>>) -> std::fmt::Result { |
| <a href=#40 id=40 data-nosnippet>40</a> <span class="macro">write!</span>(f, <span class="string">"{}"</span>, <span class="self">self</span>.name) |
| <a href=#41 id=41 data-nosnippet>41</a> } |
| <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><span class="kw">struct </span>SalsaAttr { |
| <a href=#45 id=45 data-nosnippet>45</a> name: String, |
| <a href=#46 id=46 data-nosnippet>46</a> tts: TokenStream, |
| <a href=#47 id=47 data-nosnippet>47</a> span: Span, |
| <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">impl </span>std::fmt::Debug <span class="kw">for </span>SalsaAttr { |
| <a href=#51 id=51 data-nosnippet>51</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, fmt: <span class="kw-2">&mut </span>std::fmt::Formatter<<span class="lifetime">'_</span>>) -> std::fmt::Result { |
| <a href=#52 id=52 data-nosnippet>52</a> <span class="macro">write!</span>(fmt, <span class="string">"{:?}"</span>, <span class="self">self</span>.name) |
| <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> |
| <a href=#56 id=56 data-nosnippet>56</a><span class="kw">impl </span>TryFrom<syn::Attribute> <span class="kw">for </span>SalsaAttr { |
| <a href=#57 id=57 data-nosnippet>57</a> <span class="kw">type </span>Error = syn::Attribute; |
| <a href=#58 id=58 data-nosnippet>58</a> |
| <a href=#59 id=59 data-nosnippet>59</a> <span class="kw">fn </span>try_from(attr: syn::Attribute) -> <span class="prelude-ty">Result</span><SalsaAttr, syn::Attribute> { |
| <a href=#60 id=60 data-nosnippet>60</a> <span class="kw">if </span>is_not_salsa_attr_path(attr.path()) { |
| <a href=#61 id=61 data-nosnippet>61</a> <span class="kw">return </span><span class="prelude-val">Err</span>(attr); |
| <a href=#62 id=62 data-nosnippet>62</a> } |
| <a href=#63 id=63 data-nosnippet>63</a> |
| <a href=#64 id=64 data-nosnippet>64</a> <span class="kw">let </span>span = attr.span(); |
| <a href=#65 id=65 data-nosnippet>65</a> |
| <a href=#66 id=66 data-nosnippet>66</a> <span class="kw">let </span>name = attr.path().segments[<span class="number">1</span>].ident.to_string(); |
| <a href=#67 id=67 data-nosnippet>67</a> <span class="kw">let </span>tts = <span class="kw">match </span>attr.meta { |
| <a href=#68 id=68 data-nosnippet>68</a> syn::Meta::Path(path) => path.into_token_stream(), |
| <a href=#69 id=69 data-nosnippet>69</a> syn::Meta::List(<span class="kw-2">ref </span>list) => { |
| <a href=#70 id=70 data-nosnippet>70</a> <span class="kw">let </span>tts = list |
| <a href=#71 id=71 data-nosnippet>71</a> .into_token_stream() |
| <a href=#72 id=72 data-nosnippet>72</a> .into_iter() |
| <a href=#73 id=73 data-nosnippet>73</a> .skip(attr.path().to_token_stream().into_iter().count()); |
| <a href=#74 id=74 data-nosnippet>74</a> proc_macro2::TokenStream::from_iter(tts) |
| <a href=#75 id=75 data-nosnippet>75</a> } |
| <a href=#76 id=76 data-nosnippet>76</a> syn::Meta::NameValue(nv) => nv.into_token_stream(), |
| <a href=#77 id=77 data-nosnippet>77</a> } |
| <a href=#78 id=78 data-nosnippet>78</a> .into(); |
| <a href=#79 id=79 data-nosnippet>79</a> |
| <a href=#80 id=80 data-nosnippet>80</a> <span class="prelude-val">Ok</span>(SalsaAttr { name, tts, span }) |
| <a href=#81 id=81 data-nosnippet>81</a> } |
| <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">fn </span>is_not_salsa_attr_path(path: <span class="kw-2">&</span>syn::Path) -> bool { |
| <a href=#85 id=85 data-nosnippet>85</a> path.segments.first().map(|s| s.<span class="macro">ident !</span>= <span class="string">"salsa"</span>).unwrap_or(<span class="bool-val">true</span>) || path.segments.len() != <span class="number">2 |
| <a href=#86 id=86 data-nosnippet>86</a></span>} |
| <a href=#87 id=87 data-nosnippet>87</a> |
| <a href=#88 id=88 data-nosnippet>88</a><span class="kw">fn </span>filter_attrs(attrs: Vec<Attribute>) -> (Vec<Attribute>, Vec<SalsaAttr>) { |
| <a href=#89 id=89 data-nosnippet>89</a> <span class="kw">let </span><span class="kw-2">mut </span>other = <span class="macro">vec!</span>[]; |
| <a href=#90 id=90 data-nosnippet>90</a> <span class="kw">let </span><span class="kw-2">mut </span>salsa = <span class="macro">vec!</span>[]; |
| <a href=#91 id=91 data-nosnippet>91</a> <span class="comment">// Leave non-salsa attributes untouched. These are |
| <a href=#92 id=92 data-nosnippet>92</a> // attributes that don't start with `salsa::` or don't have |
| <a href=#93 id=93 data-nosnippet>93</a> // exactly two segments in their path. |
| <a href=#94 id=94 data-nosnippet>94</a> </span><span class="kw">for </span>attr <span class="kw">in </span>attrs { |
| <a href=#95 id=95 data-nosnippet>95</a> <span class="kw">match </span>SalsaAttr::try_from(attr) { |
| <a href=#96 id=96 data-nosnippet>96</a> <span class="prelude-val">Ok</span>(it) => salsa.push(it), |
| <a href=#97 id=97 data-nosnippet>97</a> <span class="prelude-val">Err</span>(it) => other.push(it), |
| <a href=#98 id=98 data-nosnippet>98</a> } |
| <a href=#99 id=99 data-nosnippet>99</a> } |
| <a href=#100 id=100 data-nosnippet>100</a> (other, salsa) |
| <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="attr">#[derive(Debug, Clone, PartialEq, Eq)] |
| <a href=#104 id=104 data-nosnippet>104</a></span><span class="kw">enum </span>QueryKind { |
| <a href=#105 id=105 data-nosnippet>105</a> Input, |
| <a href=#106 id=106 data-nosnippet>106</a> Tracked, |
| <a href=#107 id=107 data-nosnippet>107</a> TrackedWithSalsaStruct, |
| <a href=#108 id=108 data-nosnippet>108</a> Transparent, |
| <a href=#109 id=109 data-nosnippet>109</a> Interned, |
| <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">#[derive(Default, Debug, Clone)] |
| <a href=#113 id=113 data-nosnippet>113</a></span><span class="kw">struct </span>Cycle { |
| <a href=#114 id=114 data-nosnippet>114</a> cycle_fn: <span class="prelude-ty">Option</span><(syn::Ident, Path)>, |
| <a href=#115 id=115 data-nosnippet>115</a> cycle_initial: <span class="prelude-ty">Option</span><(syn::Ident, Path)>, |
| <a href=#116 id=116 data-nosnippet>116</a> cycle_result: <span class="prelude-ty">Option</span><(syn::Ident, Path)>, |
| <a href=#117 id=117 data-nosnippet>117</a>} |
| <a href=#118 id=118 data-nosnippet>118</a> |
| <a href=#119 id=119 data-nosnippet>119</a><span class="kw">impl </span>Parse <span class="kw">for </span>Cycle { |
| <a href=#120 id=120 data-nosnippet>120</a> <span class="kw">fn </span>parse(input: ParseStream<<span class="lifetime">'_</span>>) -> syn::Result<<span class="self">Self</span>> { |
| <a href=#121 id=121 data-nosnippet>121</a> <span class="kw">let </span>options = Punctuated::<<span class="prelude-ty">Option</span>, <span class="macro">Token!</span>[,]>::parse_terminated(input)<span class="question-mark">?</span>; |
| <a href=#122 id=122 data-nosnippet>122</a> <span class="kw">let </span><span class="kw-2">mut </span>cycle_fn = <span class="prelude-val">None</span>; |
| <a href=#123 id=123 data-nosnippet>123</a> <span class="kw">let </span><span class="kw-2">mut </span>cycle_initial = <span class="prelude-val">None</span>; |
| <a href=#124 id=124 data-nosnippet>124</a> <span class="kw">let </span><span class="kw-2">mut </span>cycle_result = <span class="prelude-val">None</span>; |
| <a href=#125 id=125 data-nosnippet>125</a> <span class="kw">for </span>option <span class="kw">in </span>options { |
| <a href=#126 id=126 data-nosnippet>126</a> <span class="kw">let </span>name = option.name.to_string(); |
| <a href=#127 id=127 data-nosnippet>127</a> <span class="kw">match </span><span class="kw-2">&*</span>name { |
| <a href=#128 id=128 data-nosnippet>128</a> <span class="string">"cycle_fn" </span>=> { |
| <a href=#129 id=129 data-nosnippet>129</a> <span class="kw">if </span>cycle_fn.is_some() { |
| <a href=#130 id=130 data-nosnippet>130</a> <span class="kw">return </span><span class="prelude-val">Err</span>(syn::Error::new_spanned(<span class="kw-2">&</span>option.name, <span class="string">"duplicate option"</span>)); |
| <a href=#131 id=131 data-nosnippet>131</a> } |
| <a href=#132 id=132 data-nosnippet>132</a> cycle_fn = <span class="prelude-val">Some</span>((option.name, option.value)); |
| <a href=#133 id=133 data-nosnippet>133</a> } |
| <a href=#134 id=134 data-nosnippet>134</a> <span class="string">"cycle_initial" </span>=> { |
| <a href=#135 id=135 data-nosnippet>135</a> <span class="kw">if </span>cycle_initial.is_some() { |
| <a href=#136 id=136 data-nosnippet>136</a> <span class="kw">return </span><span class="prelude-val">Err</span>(syn::Error::new_spanned(<span class="kw-2">&</span>option.name, <span class="string">"duplicate option"</span>)); |
| <a href=#137 id=137 data-nosnippet>137</a> } |
| <a href=#138 id=138 data-nosnippet>138</a> cycle_initial = <span class="prelude-val">Some</span>((option.name, option.value)); |
| <a href=#139 id=139 data-nosnippet>139</a> } |
| <a href=#140 id=140 data-nosnippet>140</a> <span class="string">"cycle_result" </span>=> { |
| <a href=#141 id=141 data-nosnippet>141</a> <span class="kw">if </span>cycle_result.is_some() { |
| <a href=#142 id=142 data-nosnippet>142</a> <span class="kw">return </span><span class="prelude-val">Err</span>(syn::Error::new_spanned(<span class="kw-2">&</span>option.name, <span class="string">"duplicate option"</span>)); |
| <a href=#143 id=143 data-nosnippet>143</a> } |
| <a href=#144 id=144 data-nosnippet>144</a> cycle_result = <span class="prelude-val">Some</span>((option.name, option.value)); |
| <a href=#145 id=145 data-nosnippet>145</a> } |
| <a href=#146 id=146 data-nosnippet>146</a> <span class="kw">_ </span>=> { |
| <a href=#147 id=147 data-nosnippet>147</a> <span class="kw">return </span><span class="prelude-val">Err</span>(syn::Error::new_spanned( |
| <a href=#148 id=148 data-nosnippet>148</a> <span class="kw-2">&</span>option.name, |
| <a href=#149 id=149 data-nosnippet>149</a> <span class="string">"unknown cycle option. Accepted values: `cycle_result`, `cycle_fn`, `cycle_initial`"</span>, |
| <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> } |
| <a href=#153 id=153 data-nosnippet>153</a> } |
| <a href=#154 id=154 data-nosnippet>154</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="self">Self </span>{ cycle_fn, cycle_initial, cycle_result }); |
| <a href=#155 id=155 data-nosnippet>155</a> |
| <a href=#156 id=156 data-nosnippet>156</a> <span class="kw">struct </span><span class="prelude-ty">Option </span>{ |
| <a href=#157 id=157 data-nosnippet>157</a> name: syn::Ident, |
| <a href=#158 id=158 data-nosnippet>158</a> value: Path, |
| <a href=#159 id=159 data-nosnippet>159</a> } |
| <a href=#160 id=160 data-nosnippet>160</a> |
| <a href=#161 id=161 data-nosnippet>161</a> <span class="kw">impl </span>Parse <span class="kw">for </span><span class="prelude-ty">Option </span>{ |
| <a href=#162 id=162 data-nosnippet>162</a> <span class="kw">fn </span>parse(input: ParseStream<<span class="lifetime">'_</span>>) -> syn::Result<<span class="self">Self</span>> { |
| <a href=#163 id=163 data-nosnippet>163</a> <span class="kw">let </span>name = input.parse()<span class="question-mark">?</span>; |
| <a href=#164 id=164 data-nosnippet>164</a> input.parse::<<span class="macro">Token!</span>[=]>()<span class="question-mark">?</span>; |
| <a href=#165 id=165 data-nosnippet>165</a> <span class="kw">let </span>value = input.parse()<span class="question-mark">?</span>; |
| <a href=#166 id=166 data-nosnippet>166</a> <span class="prelude-val">Ok</span>(<span class="self">Self </span>{ name, value }) |
| <a href=#167 id=167 data-nosnippet>167</a> } |
| <a href=#168 id=168 data-nosnippet>168</a> } |
| <a href=#169 id=169 data-nosnippet>169</a> } |
| <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="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>query_group_impl( |
| <a href=#173 id=173 data-nosnippet>173</a> _args: proc_macro::TokenStream, |
| <a href=#174 id=174 data-nosnippet>174</a> input: proc_macro::TokenStream, |
| <a href=#175 id=175 data-nosnippet>175</a>) -> <span class="prelude-ty">Result</span><proc_macro::TokenStream, syn::Error> { |
| <a href=#176 id=176 data-nosnippet>176</a> <span class="kw">let </span><span class="kw-2">mut </span>item_trait = syn::parse::<ItemTrait>(input)<span class="question-mark">?</span>; |
| <a href=#177 id=177 data-nosnippet>177</a> |
| <a href=#178 id=178 data-nosnippet>178</a> <span class="kw">let </span>supertraits = <span class="kw-2">&</span>item_trait.supertraits; |
| <a href=#179 id=179 data-nosnippet>179</a> |
| <a href=#180 id=180 data-nosnippet>180</a> <span class="kw">let </span>db_attr: Attribute = <span class="macro">parse_quote!</span> { |
| <a href=#181 id=181 data-nosnippet>181</a> <span class="attr">#[salsa_macros::db] |
| <a href=#182 id=182 data-nosnippet>182</a> </span>}; |
| <a href=#183 id=183 data-nosnippet>183</a> item_trait.attrs.push(db_attr); |
| <a href=#184 id=184 data-nosnippet>184</a> |
| <a href=#185 id=185 data-nosnippet>185</a> <span class="kw">let </span>trait_name_ident = <span class="kw-2">&</span>item_trait.ident.clone(); |
| <a href=#186 id=186 data-nosnippet>186</a> <span class="kw">let </span>input_struct_name = <span class="macro">format_ident!</span>(<span class="string">"{}Data"</span>, trait_name_ident); |
| <a href=#187 id=187 data-nosnippet>187</a> <span class="kw">let </span>create_data_ident = <span class="macro">format_ident!</span>(<span class="string">"create_data_{}"</span>, trait_name_ident); |
| <a href=#188 id=188 data-nosnippet>188</a> |
| <a href=#189 id=189 data-nosnippet>189</a> <span class="kw">let </span><span class="kw-2">mut </span>input_struct_fields: Vec<InputStructField> = <span class="macro">vec!</span>[]; |
| <a href=#190 id=190 data-nosnippet>190</a> <span class="kw">let </span><span class="kw-2">mut </span>trait_methods = <span class="macro">vec!</span>[]; |
| <a href=#191 id=191 data-nosnippet>191</a> <span class="kw">let </span><span class="kw-2">mut </span>setter_trait_methods = <span class="macro">vec!</span>[]; |
| <a href=#192 id=192 data-nosnippet>192</a> <span class="kw">let </span><span class="kw-2">mut </span>lookup_signatures = <span class="macro">vec!</span>[]; |
| <a href=#193 id=193 data-nosnippet>193</a> <span class="kw">let </span><span class="kw-2">mut </span>lookup_methods = <span class="macro">vec!</span>[]; |
| <a href=#194 id=194 data-nosnippet>194</a> |
| <a href=#195 id=195 data-nosnippet>195</a> <span class="kw">for </span>item <span class="kw">in </span><span class="kw-2">&mut </span>item_trait.items { |
| <a href=#196 id=196 data-nosnippet>196</a> <span class="kw">if let </span>syn::TraitItem::Fn(method) = item { |
| <a href=#197 id=197 data-nosnippet>197</a> <span class="kw">let </span>method_name = <span class="kw-2">&</span>method.sig.ident; |
| <a href=#198 id=198 data-nosnippet>198</a> <span class="kw">let </span>signature = <span class="kw-2">&</span>method.sig; |
| <a href=#199 id=199 data-nosnippet>199</a> |
| <a href=#200 id=200 data-nosnippet>200</a> <span class="kw">let </span>(_attrs, salsa_attrs) = filter_attrs(method.attrs.clone()); |
| <a href=#201 id=201 data-nosnippet>201</a> |
| <a href=#202 id=202 data-nosnippet>202</a> <span class="kw">let </span><span class="kw-2">mut </span>query_kind = QueryKind::TrackedWithSalsaStruct; |
| <a href=#203 id=203 data-nosnippet>203</a> <span class="kw">let </span><span class="kw-2">mut </span>invoke = <span class="prelude-val">None</span>; |
| <a href=#204 id=204 data-nosnippet>204</a> <span class="kw">let </span><span class="kw-2">mut </span>cycle = <span class="prelude-val">None</span>; |
| <a href=#205 id=205 data-nosnippet>205</a> <span class="kw">let </span><span class="kw-2">mut </span>interned_struct_path = <span class="prelude-val">None</span>; |
| <a href=#206 id=206 data-nosnippet>206</a> <span class="kw">let </span><span class="kw-2">mut </span>lru = <span class="prelude-val">None</span>; |
| <a href=#207 id=207 data-nosnippet>207</a> |
| <a href=#208 id=208 data-nosnippet>208</a> <span class="kw">let </span>params: Vec<FnArg> = signature.inputs.clone().into_iter().collect(); |
| <a href=#209 id=209 data-nosnippet>209</a> <span class="kw">let </span>pat_and_tys = params |
| <a href=#210 id=210 data-nosnippet>210</a> .into_iter() |
| <a href=#211 id=211 data-nosnippet>211</a> .filter(|fn_arg| <span class="macro">matches!</span>(fn_arg, FnArg::Typed(<span class="kw">_</span>))) |
| <a href=#212 id=212 data-nosnippet>212</a> .map(|fn_arg| <span class="kw">match </span>fn_arg { |
| <a href=#213 id=213 data-nosnippet>213</a> FnArg::Typed(pat_type) => pat_type, |
| <a href=#214 id=214 data-nosnippet>214</a> FnArg::Receiver(<span class="kw">_</span>) => <span class="macro">unreachable!</span>(<span class="string">"this should have been filtered out"</span>), |
| <a href=#215 id=215 data-nosnippet>215</a> }) |
| <a href=#216 id=216 data-nosnippet>216</a> .collect::<Vec<syn::PatType>>(); |
| <a href=#217 id=217 data-nosnippet>217</a> |
| <a href=#218 id=218 data-nosnippet>218</a> <span class="kw">for </span>SalsaAttr { name, tts, span } <span class="kw">in </span>salsa_attrs { |
| <a href=#219 id=219 data-nosnippet>219</a> <span class="kw">match </span>name.as_str() { |
| <a href=#220 id=220 data-nosnippet>220</a> <span class="string">"cycle" </span>=> { |
| <a href=#221 id=221 data-nosnippet>221</a> <span class="kw">let </span>c = syn::parse::<Parenthesized<Cycle>>(tts)<span class="question-mark">?</span>; |
| <a href=#222 id=222 data-nosnippet>222</a> cycle = <span class="prelude-val">Some</span>(c.<span class="number">0</span>); |
| <a href=#223 id=223 data-nosnippet>223</a> } |
| <a href=#224 id=224 data-nosnippet>224</a> <span class="string">"input" </span>=> { |
| <a href=#225 id=225 data-nosnippet>225</a> <span class="kw">if </span>!pat_and_tys.is_empty() { |
| <a href=#226 id=226 data-nosnippet>226</a> <span class="kw">return </span><span class="prelude-val">Err</span>(syn::Error::new( |
| <a href=#227 id=227 data-nosnippet>227</a> span, |
| <a href=#228 id=228 data-nosnippet>228</a> <span class="string">"input methods cannot have a parameter"</span>, |
| <a href=#229 id=229 data-nosnippet>229</a> )); |
| <a href=#230 id=230 data-nosnippet>230</a> } |
| <a href=#231 id=231 data-nosnippet>231</a> query_kind = QueryKind::Input; |
| <a href=#232 id=232 data-nosnippet>232</a> } |
| <a href=#233 id=233 data-nosnippet>233</a> <span class="string">"interned" </span>=> { |
| <a href=#234 id=234 data-nosnippet>234</a> <span class="kw">let </span>syn::ReturnType::Type(<span class="kw">_</span>, ty) = <span class="kw-2">&</span>signature.output <span class="kw">else </span>{ |
| <a href=#235 id=235 data-nosnippet>235</a> <span class="kw">return </span><span class="prelude-val">Err</span>(syn::Error::new( |
| <a href=#236 id=236 data-nosnippet>236</a> span, |
| <a href=#237 id=237 data-nosnippet>237</a> <span class="string">"interned queries must have return type"</span>, |
| <a href=#238 id=238 data-nosnippet>238</a> )); |
| <a href=#239 id=239 data-nosnippet>239</a> }; |
| <a href=#240 id=240 data-nosnippet>240</a> <span class="kw">let </span>syn::Type::Path(path) = <span class="kw-2">&**</span>ty <span class="kw">else </span>{ |
| <a href=#241 id=241 data-nosnippet>241</a> <span class="kw">return </span><span class="prelude-val">Err</span>(syn::Error::new( |
| <a href=#242 id=242 data-nosnippet>242</a> span, |
| <a href=#243 id=243 data-nosnippet>243</a> <span class="string">"interned queries must have return type"</span>, |
| <a href=#244 id=244 data-nosnippet>244</a> )); |
| <a href=#245 id=245 data-nosnippet>245</a> }; |
| <a href=#246 id=246 data-nosnippet>246</a> interned_struct_path = <span class="prelude-val">Some</span>(path.path.clone()); |
| <a href=#247 id=247 data-nosnippet>247</a> query_kind = QueryKind::Interned; |
| <a href=#248 id=248 data-nosnippet>248</a> } |
| <a href=#249 id=249 data-nosnippet>249</a> <span class="string">"invoke_interned" </span>=> { |
| <a href=#250 id=250 data-nosnippet>250</a> <span class="kw">let </span>path = syn::parse::<Parenthesized<Path>>(tts)<span class="question-mark">?</span>; |
| <a href=#251 id=251 data-nosnippet>251</a> invoke = <span class="prelude-val">Some</span>(path.<span class="number">0</span>.clone()); |
| <a href=#252 id=252 data-nosnippet>252</a> query_kind = QueryKind::Tracked; |
| <a href=#253 id=253 data-nosnippet>253</a> } |
| <a href=#254 id=254 data-nosnippet>254</a> <span class="string">"invoke" </span>=> { |
| <a href=#255 id=255 data-nosnippet>255</a> <span class="kw">let </span>path = syn::parse::<Parenthesized<Path>>(tts)<span class="question-mark">?</span>; |
| <a href=#256 id=256 data-nosnippet>256</a> invoke = <span class="prelude-val">Some</span>(path.<span class="number">0</span>.clone()); |
| <a href=#257 id=257 data-nosnippet>257</a> <span class="kw">if </span><span class="macro">query_kind !</span>= QueryKind::Transparent { |
| <a href=#258 id=258 data-nosnippet>258</a> query_kind = QueryKind::TrackedWithSalsaStruct; |
| <a href=#259 id=259 data-nosnippet>259</a> } |
| <a href=#260 id=260 data-nosnippet>260</a> } |
| <a href=#261 id=261 data-nosnippet>261</a> <span class="string">"tracked" </span><span class="kw">if </span>method.default.is_some() => { |
| <a href=#262 id=262 data-nosnippet>262</a> query_kind = QueryKind::TrackedWithSalsaStruct; |
| <a href=#263 id=263 data-nosnippet>263</a> } |
| <a href=#264 id=264 data-nosnippet>264</a> <span class="string">"lru" </span>=> { |
| <a href=#265 id=265 data-nosnippet>265</a> <span class="kw">let </span>lru_count = syn::parse::<Parenthesized<syn::LitInt>>(tts)<span class="question-mark">?</span>; |
| <a href=#266 id=266 data-nosnippet>266</a> <span class="kw">let </span>lru_count = lru_count.<span class="number">0</span>.base10_parse::<u32>()<span class="question-mark">?</span>; |
| <a href=#267 id=267 data-nosnippet>267</a> |
| <a href=#268 id=268 data-nosnippet>268</a> lru = <span class="prelude-val">Some</span>(lru_count); |
| <a href=#269 id=269 data-nosnippet>269</a> } |
| <a href=#270 id=270 data-nosnippet>270</a> <span class="string">"transparent" </span>=> { |
| <a href=#271 id=271 data-nosnippet>271</a> query_kind = QueryKind::Transparent; |
| <a href=#272 id=272 data-nosnippet>272</a> } |
| <a href=#273 id=273 data-nosnippet>273</a> <span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(syn::Error::new(span, <span class="macro">format!</span>(<span class="string">"unknown attribute `{name}`"</span>))), |
| <a href=#274 id=274 data-nosnippet>274</a> } |
| <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> <span class="kw">let </span>syn::ReturnType::Type(<span class="kw">_</span>, return_ty) = signature.output.clone() <span class="kw">else </span>{ |
| <a href=#278 id=278 data-nosnippet>278</a> <span class="kw">return </span><span class="prelude-val">Err</span>(syn::Error::new(signature.span(), <span class="string">"Queries must have a return type"</span>)); |
| <a href=#279 id=279 data-nosnippet>279</a> }; |
| <a href=#280 id=280 data-nosnippet>280</a> |
| <a href=#281 id=281 data-nosnippet>281</a> <span class="kw">if let </span>syn::Type::Path(<span class="kw-2">ref </span>ty_path) = <span class="kw-2">*</span>return_ty |
| <a href=#282 id=282 data-nosnippet>282</a> && <span class="macro">matches!</span>(query_kind, QueryKind::Input) |
| <a href=#283 id=283 data-nosnippet>283</a> { |
| <a href=#284 id=284 data-nosnippet>284</a> <span class="kw">let </span>field = InputStructField { |
| <a href=#285 id=285 data-nosnippet>285</a> name: method_name.to_token_stream(), |
| <a href=#286 id=286 data-nosnippet>286</a> ty: ty_path.path.to_token_stream(), |
| <a href=#287 id=287 data-nosnippet>287</a> }; |
| <a href=#288 id=288 data-nosnippet>288</a> |
| <a href=#289 id=289 data-nosnippet>289</a> input_struct_fields.push(field); |
| <a href=#290 id=290 data-nosnippet>290</a> } |
| <a href=#291 id=291 data-nosnippet>291</a> |
| <a href=#292 id=292 data-nosnippet>292</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(block) = <span class="kw-2">&mut </span>method.default { |
| <a href=#293 id=293 data-nosnippet>293</a> SelfToDbRewriter.visit_block_mut(block); |
| <a href=#294 id=294 data-nosnippet>294</a> } |
| <a href=#295 id=295 data-nosnippet>295</a> |
| <a href=#296 id=296 data-nosnippet>296</a> <span class="kw">match </span>(query_kind, invoke) { |
| <a href=#297 id=297 data-nosnippet>297</a> <span class="comment">// input |
| <a href=#298 id=298 data-nosnippet>298</a> </span>(QueryKind::Input, <span class="prelude-val">None</span>) => { |
| <a href=#299 id=299 data-nosnippet>299</a> <span class="kw">let </span>query = InputQuery { |
| <a href=#300 id=300 data-nosnippet>300</a> signature: method.sig.clone(), |
| <a href=#301 id=301 data-nosnippet>301</a> create_data_ident: create_data_ident.clone(), |
| <a href=#302 id=302 data-nosnippet>302</a> }; |
| <a href=#303 id=303 data-nosnippet>303</a> <span class="kw">let </span>value = Queries::InputQuery(query); |
| <a href=#304 id=304 data-nosnippet>304</a> trait_methods.push(value); |
| <a href=#305 id=305 data-nosnippet>305</a> |
| <a href=#306 id=306 data-nosnippet>306</a> <span class="kw">let </span>setter = InputSetter { |
| <a href=#307 id=307 data-nosnippet>307</a> signature: method.sig.clone(), |
| <a href=#308 id=308 data-nosnippet>308</a> return_type: <span class="kw-2">*</span>return_ty.clone(), |
| <a href=#309 id=309 data-nosnippet>309</a> create_data_ident: create_data_ident.clone(), |
| <a href=#310 id=310 data-nosnippet>310</a> }; |
| <a href=#311 id=311 data-nosnippet>311</a> setter_trait_methods.push(SetterKind::Plain(setter)); |
| <a href=#312 id=312 data-nosnippet>312</a> |
| <a href=#313 id=313 data-nosnippet>313</a> <span class="kw">let </span>setter = InputSetterWithDurability { |
| <a href=#314 id=314 data-nosnippet>314</a> signature: method.sig.clone(), |
| <a href=#315 id=315 data-nosnippet>315</a> return_type: <span class="kw-2">*</span>return_ty.clone(), |
| <a href=#316 id=316 data-nosnippet>316</a> create_data_ident: create_data_ident.clone(), |
| <a href=#317 id=317 data-nosnippet>317</a> }; |
| <a href=#318 id=318 data-nosnippet>318</a> setter_trait_methods.push(SetterKind::WithDurability(setter)); |
| <a href=#319 id=319 data-nosnippet>319</a> } |
| <a href=#320 id=320 data-nosnippet>320</a> (QueryKind::Interned, <span class="prelude-val">None</span>) => { |
| <a href=#321 id=321 data-nosnippet>321</a> <span class="kw">let </span>interned_struct_path = interned_struct_path.unwrap(); |
| <a href=#322 id=322 data-nosnippet>322</a> <span class="kw">let </span>method = Intern { |
| <a href=#323 id=323 data-nosnippet>323</a> signature: signature.clone(), |
| <a href=#324 id=324 data-nosnippet>324</a> pat_and_tys: pat_and_tys.clone(), |
| <a href=#325 id=325 data-nosnippet>325</a> interned_struct_path: interned_struct_path.clone(), |
| <a href=#326 id=326 data-nosnippet>326</a> }; |
| <a href=#327 id=327 data-nosnippet>327</a> |
| <a href=#328 id=328 data-nosnippet>328</a> trait_methods.push(Queries::Intern(method)); |
| <a href=#329 id=329 data-nosnippet>329</a> |
| <a href=#330 id=330 data-nosnippet>330</a> <span class="kw">let </span><span class="kw-2">mut </span>method = Lookup { |
| <a href=#331 id=331 data-nosnippet>331</a> signature: signature.clone(), |
| <a href=#332 id=332 data-nosnippet>332</a> pat_and_tys: pat_and_tys.clone(), |
| <a href=#333 id=333 data-nosnippet>333</a> return_ty: <span class="kw-2">*</span>return_ty, |
| <a href=#334 id=334 data-nosnippet>334</a> interned_struct_path, |
| <a href=#335 id=335 data-nosnippet>335</a> }; |
| <a href=#336 id=336 data-nosnippet>336</a> method.prepare_signature(); |
| <a href=#337 id=337 data-nosnippet>337</a> |
| <a href=#338 id=338 data-nosnippet>338</a> lookup_signatures |
| <a href=#339 id=339 data-nosnippet>339</a> .push(TraitItem::Fn(make_trait_method(method.signature.clone()))); |
| <a href=#340 id=340 data-nosnippet>340</a> lookup_methods.push(method); |
| <a href=#341 id=341 data-nosnippet>341</a> } |
| <a href=#342 id=342 data-nosnippet>342</a> <span class="comment">// tracked function. it might have an invoke, or might not. |
| <a href=#343 id=343 data-nosnippet>343</a> </span>(QueryKind::Tracked, invoke) => { |
| <a href=#344 id=344 data-nosnippet>344</a> <span class="kw">let </span>method = TrackedQuery { |
| <a href=#345 id=345 data-nosnippet>345</a> trait_name: trait_name_ident.clone(), |
| <a href=#346 id=346 data-nosnippet>346</a> generated_struct: <span class="prelude-val">Some</span>(GeneratedInputStruct { |
| <a href=#347 id=347 data-nosnippet>347</a> input_struct_name: input_struct_name.clone(), |
| <a href=#348 id=348 data-nosnippet>348</a> create_data_ident: create_data_ident.clone(), |
| <a href=#349 id=349 data-nosnippet>349</a> }), |
| <a href=#350 id=350 data-nosnippet>350</a> signature: signature.clone(), |
| <a href=#351 id=351 data-nosnippet>351</a> pat_and_tys: pat_and_tys.clone(), |
| <a href=#352 id=352 data-nosnippet>352</a> invoke, |
| <a href=#353 id=353 data-nosnippet>353</a> cycle, |
| <a href=#354 id=354 data-nosnippet>354</a> lru, |
| <a href=#355 id=355 data-nosnippet>355</a> default: method.default.take(), |
| <a href=#356 id=356 data-nosnippet>356</a> }; |
| <a href=#357 id=357 data-nosnippet>357</a> |
| <a href=#358 id=358 data-nosnippet>358</a> trait_methods.push(Queries::TrackedQuery(method)); |
| <a href=#359 id=359 data-nosnippet>359</a> } |
| <a href=#360 id=360 data-nosnippet>360</a> (QueryKind::TrackedWithSalsaStruct, invoke) => { |
| <a href=#361 id=361 data-nosnippet>361</a> <span class="kw">let </span>method = TrackedQuery { |
| <a href=#362 id=362 data-nosnippet>362</a> trait_name: trait_name_ident.clone(), |
| <a href=#363 id=363 data-nosnippet>363</a> generated_struct: <span class="prelude-val">None</span>, |
| <a href=#364 id=364 data-nosnippet>364</a> signature: signature.clone(), |
| <a href=#365 id=365 data-nosnippet>365</a> pat_and_tys: pat_and_tys.clone(), |
| <a href=#366 id=366 data-nosnippet>366</a> invoke, |
| <a href=#367 id=367 data-nosnippet>367</a> cycle, |
| <a href=#368 id=368 data-nosnippet>368</a> lru, |
| <a href=#369 id=369 data-nosnippet>369</a> default: method.default.take(), |
| <a href=#370 id=370 data-nosnippet>370</a> }; |
| <a href=#371 id=371 data-nosnippet>371</a> |
| <a href=#372 id=372 data-nosnippet>372</a> trait_methods.push(Queries::TrackedQuery(method)) |
| <a href=#373 id=373 data-nosnippet>373</a> } |
| <a href=#374 id=374 data-nosnippet>374</a> (QueryKind::Transparent, invoke) => { |
| <a href=#375 id=375 data-nosnippet>375</a> <span class="kw">let </span>method = Transparent { |
| <a href=#376 id=376 data-nosnippet>376</a> signature: method.sig.clone(), |
| <a href=#377 id=377 data-nosnippet>377</a> pat_and_tys: pat_and_tys.clone(), |
| <a href=#378 id=378 data-nosnippet>378</a> invoke, |
| <a href=#379 id=379 data-nosnippet>379</a> default: method.default.take(), |
| <a href=#380 id=380 data-nosnippet>380</a> }; |
| <a href=#381 id=381 data-nosnippet>381</a> trait_methods.push(Queries::Transparent(method)); |
| <a href=#382 id=382 data-nosnippet>382</a> } |
| <a href=#383 id=383 data-nosnippet>383</a> <span class="comment">// error/invalid constructions |
| <a href=#384 id=384 data-nosnippet>384</a> </span>(QueryKind::Interned, <span class="prelude-val">Some</span>(path)) => { |
| <a href=#385 id=385 data-nosnippet>385</a> <span class="kw">return </span><span class="prelude-val">Err</span>(syn::Error::new( |
| <a href=#386 id=386 data-nosnippet>386</a> path.span(), |
| <a href=#387 id=387 data-nosnippet>387</a> <span class="string">"Interned queries cannot be used with an `#[invoke]`"</span>.to_string(), |
| <a href=#388 id=388 data-nosnippet>388</a> )); |
| <a href=#389 id=389 data-nosnippet>389</a> } |
| <a href=#390 id=390 data-nosnippet>390</a> (QueryKind::Input, <span class="prelude-val">Some</span>(path)) => { |
| <a href=#391 id=391 data-nosnippet>391</a> <span class="kw">return </span><span class="prelude-val">Err</span>(syn::Error::new( |
| <a href=#392 id=392 data-nosnippet>392</a> path.span(), |
| <a href=#393 id=393 data-nosnippet>393</a> <span class="string">"Inputs cannot be used with an `#[invoke]`"</span>.to_string(), |
| <a href=#394 id=394 data-nosnippet>394</a> )); |
| <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> } |
| <a href=#398 id=398 data-nosnippet>398</a> } |
| <a href=#399 id=399 data-nosnippet>399</a> |
| <a href=#400 id=400 data-nosnippet>400</a> <span class="kw">let </span>fields = input_struct_fields |
| <a href=#401 id=401 data-nosnippet>401</a> .into_iter() |
| <a href=#402 id=402 data-nosnippet>402</a> .map(|input| { |
| <a href=#403 id=403 data-nosnippet>403</a> <span class="kw">let </span>name = input.name; |
| <a href=#404 id=404 data-nosnippet>404</a> <span class="kw">let </span>ret = input.ty; |
| <a href=#405 id=405 data-nosnippet>405</a> <span class="macro">quote!</span> { #name: <span class="prelude-ty">Option</span><#ret> } |
| <a href=#406 id=406 data-nosnippet>406</a> }) |
| <a href=#407 id=407 data-nosnippet>407</a> .collect::<Vec<proc_macro2::TokenStream>>(); |
| <a href=#408 id=408 data-nosnippet>408</a> |
| <a href=#409 id=409 data-nosnippet>409</a> <span class="kw">let </span>input_struct = <span class="macro">quote!</span> { |
| <a href=#410 id=410 data-nosnippet>410</a> <span class="attr">#[salsa_macros::input] |
| <a href=#411 id=411 data-nosnippet>411</a> </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>#input_struct_name { |
| <a href=#412 id=412 data-nosnippet>412</a> #(#fields),* |
| <a href=#413 id=413 data-nosnippet>413</a> } |
| <a href=#414 id=414 data-nosnippet>414</a> }; |
| <a href=#415 id=415 data-nosnippet>415</a> |
| <a href=#416 id=416 data-nosnippet>416</a> <span class="kw">let </span>field_params = std::iter::repeat_n(<span class="macro">quote!</span> { <span class="prelude-val">None </span>}, fields.len()) |
| <a href=#417 id=417 data-nosnippet>417</a> .collect::<Vec<proc_macro2::TokenStream>>(); |
| <a href=#418 id=418 data-nosnippet>418</a> |
| <a href=#419 id=419 data-nosnippet>419</a> <span class="kw">let </span>create_data_method = <span class="macro">quote!</span> { |
| <a href=#420 id=420 data-nosnippet>420</a> <span class="attr">#[allow(non_snake_case)] |
| <a href=#421 id=421 data-nosnippet>421</a> #[salsa_macros::tracked] |
| <a href=#422 id=422 data-nosnippet>422</a> </span><span class="kw">fn </span>#create_data_ident(db: <span class="kw-2">&</span><span class="kw">dyn </span>#trait_name_ident) -> #input_struct_name { |
| <a href=#423 id=423 data-nosnippet>423</a> #input_struct_name::new(db, #(#field_params),<span class="kw-2">*</span>) |
| <a href=#424 id=424 data-nosnippet>424</a> } |
| <a href=#425 id=425 data-nosnippet>425</a> }; |
| <a href=#426 id=426 data-nosnippet>426</a> |
| <a href=#427 id=427 data-nosnippet>427</a> <span class="kw">let </span><span class="kw-2">mut </span>setter_signatures = <span class="macro">vec!</span>[]; |
| <a href=#428 id=428 data-nosnippet>428</a> <span class="kw">let </span><span class="kw-2">mut </span>setter_methods = <span class="macro">vec!</span>[]; |
| <a href=#429 id=429 data-nosnippet>429</a> <span class="kw">for </span>trait_item <span class="kw">in </span>setter_trait_methods |
| <a href=#430 id=430 data-nosnippet>430</a> .iter() |
| <a href=#431 id=431 data-nosnippet>431</a> .map(|method| method.to_token_stream()) |
| <a href=#432 id=432 data-nosnippet>432</a> .map(|tokens| syn::parse2::<syn::TraitItemFn>(tokens).unwrap()) |
| <a href=#433 id=433 data-nosnippet>433</a> { |
| <a href=#434 id=434 data-nosnippet>434</a> <span class="kw">let </span><span class="kw-2">mut </span>methods_sans_body = trait_item.clone(); |
| <a href=#435 id=435 data-nosnippet>435</a> methods_sans_body.default = <span class="prelude-val">None</span>; |
| <a href=#436 id=436 data-nosnippet>436</a> methods_sans_body.semi_token = <span class="prelude-val">Some</span>(<span class="macro">syn::Token!</span>[;](trait_item.span())); |
| <a href=#437 id=437 data-nosnippet>437</a> |
| <a href=#438 id=438 data-nosnippet>438</a> setter_signatures.push(TraitItem::Fn(methods_sans_body)); |
| <a href=#439 id=439 data-nosnippet>439</a> setter_methods.push(TraitItem::Fn(trait_item)); |
| <a href=#440 id=440 data-nosnippet>440</a> } |
| <a href=#441 id=441 data-nosnippet>441</a> |
| <a href=#442 id=442 data-nosnippet>442</a> item_trait.items.append(<span class="kw-2">&mut </span>setter_signatures); |
| <a href=#443 id=443 data-nosnippet>443</a> item_trait.items.append(<span class="kw-2">&mut </span>lookup_signatures); |
| <a href=#444 id=444 data-nosnippet>444</a> |
| <a href=#445 id=445 data-nosnippet>445</a> <span class="kw">let </span>trait_impl = <span class="macro">quote!</span> { |
| <a href=#446 id=446 data-nosnippet>446</a> <span class="attr">#[salsa_macros::db] |
| <a href=#447 id=447 data-nosnippet>447</a> </span><span class="kw">impl</span><DB> #trait_name_ident <span class="kw">for </span>DB |
| <a href=#448 id=448 data-nosnippet>448</a> <span class="kw">where |
| <a href=#449 id=449 data-nosnippet>449</a> </span>DB: #supertraits, |
| <a href=#450 id=450 data-nosnippet>450</a> { |
| <a href=#451 id=451 data-nosnippet>451</a> #(#trait_methods)* |
| <a href=#452 id=452 data-nosnippet>452</a> |
| <a href=#453 id=453 data-nosnippet>453</a> #(#setter_methods)* |
| <a href=#454 id=454 data-nosnippet>454</a> |
| <a href=#455 id=455 data-nosnippet>455</a> #(#lookup_methods)* |
| <a href=#456 id=456 data-nosnippet>456</a> } |
| <a href=#457 id=457 data-nosnippet>457</a> }; |
| <a href=#458 id=458 data-nosnippet>458</a> RemoveAttrsFromTraitMethods.visit_item_trait_mut(<span class="kw-2">&mut </span>item_trait); |
| <a href=#459 id=459 data-nosnippet>459</a> |
| <a href=#460 id=460 data-nosnippet>460</a> <span class="kw">let </span>out = <span class="macro">quote!</span> { |
| <a href=#461 id=461 data-nosnippet>461</a> #item_trait |
| <a href=#462 id=462 data-nosnippet>462</a> |
| <a href=#463 id=463 data-nosnippet>463</a> #trait_impl |
| <a href=#464 id=464 data-nosnippet>464</a> |
| <a href=#465 id=465 data-nosnippet>465</a> #input_struct |
| <a href=#466 id=466 data-nosnippet>466</a> |
| <a href=#467 id=467 data-nosnippet>467</a> #create_data_method |
| <a href=#468 id=468 data-nosnippet>468</a> } |
| <a href=#469 id=469 data-nosnippet>469</a> .into(); |
| <a href=#470 id=470 data-nosnippet>470</a> |
| <a href=#471 id=471 data-nosnippet>471</a> <span class="prelude-val">Ok</span>(out) |
| <a href=#472 id=472 data-nosnippet>472</a>} |
| <a href=#473 id=473 data-nosnippet>473</a> |
| <a href=#474 id=474 data-nosnippet>474</a><span class="doccomment">/// Parenthesis helper |
| <a href=#475 id=475 data-nosnippet>475</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Parenthesized<T>(<span class="kw">pub</span>(<span class="kw">crate</span>) T); |
| <a href=#476 id=476 data-nosnippet>476</a> |
| <a href=#477 id=477 data-nosnippet>477</a><span class="kw">impl</span><T> syn::parse::Parse <span class="kw">for </span>Parenthesized<T> |
| <a href=#478 id=478 data-nosnippet>478</a><span class="kw">where |
| <a href=#479 id=479 data-nosnippet>479</a> </span>T: syn::parse::Parse, |
| <a href=#480 id=480 data-nosnippet>480</a>{ |
| <a href=#481 id=481 data-nosnippet>481</a> <span class="kw">fn </span>parse(input: ParseStream<<span class="lifetime">'_</span>>) -> syn::Result<<span class="self">Self</span>> { |
| <a href=#482 id=482 data-nosnippet>482</a> <span class="kw">let </span>content; |
| <a href=#483 id=483 data-nosnippet>483</a> <span class="macro">syn::parenthesized!</span>(content <span class="kw">in </span>input); |
| <a href=#484 id=484 data-nosnippet>484</a> content.parse::<T>().map(Parenthesized) |
| <a href=#485 id=485 data-nosnippet>485</a> } |
| <a href=#486 id=486 data-nosnippet>486</a>} |
| <a href=#487 id=487 data-nosnippet>487</a> |
| <a href=#488 id=488 data-nosnippet>488</a><span class="kw">fn </span>make_trait_method(sig: syn::Signature) -> TraitItemFn { |
| <a href=#489 id=489 data-nosnippet>489</a> TraitItemFn { |
| <a href=#490 id=490 data-nosnippet>490</a> attrs: <span class="macro">vec!</span>[], |
| <a href=#491 id=491 data-nosnippet>491</a> sig: sig.clone(), |
| <a href=#492 id=492 data-nosnippet>492</a> semi_token: <span class="prelude-val">Some</span>(<span class="macro">syn::Token!</span>[;](sig.span())), |
| <a href=#493 id=493 data-nosnippet>493</a> default: <span class="prelude-val">None</span>, |
| <a href=#494 id=494 data-nosnippet>494</a> } |
| <a href=#495 id=495 data-nosnippet>495</a>} |
| <a href=#496 id=496 data-nosnippet>496</a> |
| <a href=#497 id=497 data-nosnippet>497</a><span class="kw">struct </span>RemoveAttrsFromTraitMethods; |
| <a href=#498 id=498 data-nosnippet>498</a> |
| <a href=#499 id=499 data-nosnippet>499</a><span class="kw">impl </span>VisitMut <span class="kw">for </span>RemoveAttrsFromTraitMethods { |
| <a href=#500 id=500 data-nosnippet>500</a> <span class="kw">fn </span>visit_item_trait_mut(<span class="kw-2">&mut </span><span class="self">self</span>, i: <span class="kw-2">&mut </span>syn::ItemTrait) { |
| <a href=#501 id=501 data-nosnippet>501</a> <span class="kw">for </span>item <span class="kw">in </span><span class="kw-2">&mut </span>i.items { |
| <a href=#502 id=502 data-nosnippet>502</a> <span class="kw">if let </span>TraitItem::Fn(trait_item_fn) = item { |
| <a href=#503 id=503 data-nosnippet>503</a> trait_item_fn.attrs = <span class="macro">vec!</span>[]; |
| <a href=#504 id=504 data-nosnippet>504</a> } |
| <a href=#505 id=505 data-nosnippet>505</a> } |
| <a href=#506 id=506 data-nosnippet>506</a> } |
| <a href=#507 id=507 data-nosnippet>507</a>} |
| <a href=#508 id=508 data-nosnippet>508</a> |
| <a href=#509 id=509 data-nosnippet>509</a><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>token_stream_with_error(<span class="kw-2">mut </span>tokens: TokenStream, error: syn::Error) -> TokenStream { |
| <a href=#510 id=510 data-nosnippet>510</a> tokens.extend(TokenStream::from(error.into_compile_error())); |
| <a href=#511 id=511 data-nosnippet>511</a> tokens |
| <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="kw">struct </span>SelfToDbRewriter; |
| <a href=#515 id=515 data-nosnippet>515</a> |
| <a href=#516 id=516 data-nosnippet>516</a><span class="kw">impl </span>VisitMut <span class="kw">for </span>SelfToDbRewriter { |
| <a href=#517 id=517 data-nosnippet>517</a> <span class="kw">fn </span>visit_expr_path_mut(<span class="kw-2">&mut </span><span class="self">self</span>, i: <span class="kw-2">&mut </span>syn::ExprPath) { |
| <a href=#518 id=518 data-nosnippet>518</a> <span class="kw">if </span>i.path.is_ident(<span class="string">"self"</span>) { |
| <a href=#519 id=519 data-nosnippet>519</a> i.path = <span class="macro">parse_quote_spanned!</span>(i.path.span() => db); |
| <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>} |
| </code></pre></div></section></main></body></html> |
