| <!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/hir-ty/src/opaques.rs`."><title>opaques.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="hir_ty" 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">hir_ty/</div>opaques.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">//! Handling of opaque types, detection of defining scope and hidden type. |
| <a href=#2 id=2 data-nosnippet>2</a> |
| <a href=#3 id=3 data-nosnippet>3</a></span><span class="kw">use </span>hir_def::{ |
| <a href=#4 id=4 data-nosnippet>4</a> AssocItemId, AssocItemLoc, DefWithBodyId, FunctionId, HasModule, ItemContainerId, TypeAliasId, |
| <a href=#5 id=5 data-nosnippet>5</a>}; |
| <a href=#6 id=6 data-nosnippet>6</a><span class="kw">use </span>hir_expand::name::Name; |
| <a href=#7 id=7 data-nosnippet>7</a><span class="kw">use </span>la_arena::ArenaMap; |
| <a href=#8 id=8 data-nosnippet>8</a><span class="kw">use </span>rustc_type_ir::inherent::Ty <span class="kw">as _</span>; |
| <a href=#9 id=9 data-nosnippet>9</a><span class="kw">use </span>syntax::ast; |
| <a href=#10 id=10 data-nosnippet>10</a> |
| <a href=#11 id=11 data-nosnippet>11</a><span class="kw">use </span>crate::{ |
| <a href=#12 id=12 data-nosnippet>12</a> ImplTraitId, InferenceResult, |
| <a href=#13 id=13 data-nosnippet>13</a> db::{HirDatabase, InternedOpaqueTyId}, |
| <a href=#14 id=14 data-nosnippet>14</a> lower::{ImplTraitIdx, ImplTraits}, |
| <a href=#15 id=15 data-nosnippet>15</a> next_solver::{ |
| <a href=#16 id=16 data-nosnippet>16</a> DbInterner, ErrorGuaranteed, SolverDefId, StoredEarlyBinder, StoredTy, Ty, TypingMode, |
| <a href=#17 id=17 data-nosnippet>17</a> infer::{DbInternerInferExt, traits::ObligationCause}, |
| <a href=#18 id=18 data-nosnippet>18</a> obligation_ctxt::ObligationCtxt, |
| <a href=#19 id=19 data-nosnippet>19</a> }, |
| <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">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>opaque_types_defined_by( |
| <a href=#23 id=23 data-nosnippet>23</a> db: <span class="kw-2">&</span><span class="kw">dyn </span>HirDatabase, |
| <a href=#24 id=24 data-nosnippet>24</a> def_id: DefWithBodyId, |
| <a href=#25 id=25 data-nosnippet>25</a> result: <span class="kw-2">&mut </span>Vec<SolverDefId>, |
| <a href=#26 id=26 data-nosnippet>26</a>) { |
| <a href=#27 id=27 data-nosnippet>27</a> <span class="kw">if let </span>DefWithBodyId::FunctionId(func) = def_id { |
| <a href=#28 id=28 data-nosnippet>28</a> <span class="comment">// A function may define its own RPITs. |
| <a href=#29 id=29 data-nosnippet>29</a> </span>extend_with_opaques( |
| <a href=#30 id=30 data-nosnippet>30</a> db, |
| <a href=#31 id=31 data-nosnippet>31</a> ImplTraits::return_type_impl_traits(db, func), |
| <a href=#32 id=32 data-nosnippet>32</a> |opaque_idx| ImplTraitId::ReturnTypeImplTrait(func, opaque_idx), |
| <a href=#33 id=33 data-nosnippet>33</a> result, |
| <a href=#34 id=34 data-nosnippet>34</a> ); |
| <a href=#35 id=35 data-nosnippet>35</a> } |
| <a href=#36 id=36 data-nosnippet>36</a> |
| <a href=#37 id=37 data-nosnippet>37</a> <span class="kw">let </span>extend_with_taits = |type_alias| { |
| <a href=#38 id=38 data-nosnippet>38</a> extend_with_opaques( |
| <a href=#39 id=39 data-nosnippet>39</a> db, |
| <a href=#40 id=40 data-nosnippet>40</a> ImplTraits::type_alias_impl_traits(db, type_alias), |
| <a href=#41 id=41 data-nosnippet>41</a> |opaque_idx| ImplTraitId::TypeAliasImplTrait(type_alias, opaque_idx), |
| <a href=#42 id=42 data-nosnippet>42</a> result, |
| <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> |
| <a href=#46 id=46 data-nosnippet>46</a> <span class="comment">// Collect opaques from assoc items. |
| <a href=#47 id=47 data-nosnippet>47</a> </span><span class="kw">let </span>extend_with_atpit_from_assoc_items = |assoc_items: <span class="kw-2">&</span>[(Name, AssocItemId)]| { |
| <a href=#48 id=48 data-nosnippet>48</a> assoc_items |
| <a href=#49 id=49 data-nosnippet>49</a> .iter() |
| <a href=#50 id=50 data-nosnippet>50</a> .filter_map(|<span class="kw-2">&</span>(<span class="kw">_</span>, assoc_id)| <span class="kw">match </span>assoc_id { |
| <a href=#51 id=51 data-nosnippet>51</a> AssocItemId::TypeAliasId(it) => <span class="prelude-val">Some</span>(it), |
| <a href=#52 id=52 data-nosnippet>52</a> AssocItemId::FunctionId(<span class="kw">_</span>) | AssocItemId::ConstId(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#53 id=53 data-nosnippet>53</a> }) |
| <a href=#54 id=54 data-nosnippet>54</a> .for_each(extend_with_taits); |
| <a href=#55 id=55 data-nosnippet>55</a> }; |
| <a href=#56 id=56 data-nosnippet>56</a> <span class="kw">let </span>extend_with_atpit_from_container = |container| <span class="kw">match </span>container { |
| <a href=#57 id=57 data-nosnippet>57</a> ItemContainerId::ImplId(impl_id) => { |
| <a href=#58 id=58 data-nosnippet>58</a> <span class="kw">if </span>db.impl_signature(impl_id).target_trait.is_some() { |
| <a href=#59 id=59 data-nosnippet>59</a> extend_with_atpit_from_assoc_items(<span class="kw-2">&</span>impl_id.impl_items(db).items); |
| <a href=#60 id=60 data-nosnippet>60</a> } |
| <a href=#61 id=61 data-nosnippet>61</a> } |
| <a href=#62 id=62 data-nosnippet>62</a> ItemContainerId::TraitId(trait_id) => { |
| <a href=#63 id=63 data-nosnippet>63</a> extend_with_atpit_from_assoc_items(<span class="kw-2">&</span>trait_id.trait_items(db).items); |
| <a href=#64 id=64 data-nosnippet>64</a> } |
| <a href=#65 id=65 data-nosnippet>65</a> <span class="kw">_ </span>=> {} |
| <a href=#66 id=66 data-nosnippet>66</a> }; |
| <a href=#67 id=67 data-nosnippet>67</a> <span class="kw">match </span>def_id { |
| <a href=#68 id=68 data-nosnippet>68</a> DefWithBodyId::ConstId(id) => extend_with_atpit_from_container(id.loc(db).container), |
| <a href=#69 id=69 data-nosnippet>69</a> DefWithBodyId::FunctionId(id) => extend_with_atpit_from_container(id.loc(db).container), |
| <a href=#70 id=70 data-nosnippet>70</a> DefWithBodyId::StaticId(<span class="kw">_</span>) | DefWithBodyId::VariantId(<span class="kw">_</span>) => {} |
| <a href=#71 id=71 data-nosnippet>71</a> } |
| <a href=#72 id=72 data-nosnippet>72</a> |
| <a href=#73 id=73 data-nosnippet>73</a> <span class="comment">// FIXME: Collect opaques from `#[define_opaque]`. |
| <a href=#74 id=74 data-nosnippet>74</a> |
| <a href=#75 id=75 data-nosnippet>75</a> </span><span class="kw">fn </span>extend_with_opaques( |
| <a href=#76 id=76 data-nosnippet>76</a> db: <span class="kw-2">&</span><span class="kw">dyn </span>HirDatabase, |
| <a href=#77 id=77 data-nosnippet>77</a> opaques: <span class="kw-2">&</span><span class="prelude-ty">Option</span><Box<StoredEarlyBinder<ImplTraits>>>, |
| <a href=#78 id=78 data-nosnippet>78</a> <span class="kw-2">mut </span>make_impl_trait: <span class="kw">impl </span>FnMut(ImplTraitIdx) -> ImplTraitId, |
| <a href=#79 id=79 data-nosnippet>79</a> result: <span class="kw-2">&mut </span>Vec<SolverDefId>, |
| <a href=#80 id=80 data-nosnippet>80</a> ) { |
| <a href=#81 id=81 data-nosnippet>81</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(opaques) = opaques { |
| <a href=#82 id=82 data-nosnippet>82</a> <span class="kw">for </span>(opaque_idx, <span class="kw">_</span>) <span class="kw">in </span>(<span class="kw-2">**</span>opaques).as_ref().skip_binder().impl_traits.iter() { |
| <a href=#83 id=83 data-nosnippet>83</a> <span class="kw">let </span>opaque_id = InternedOpaqueTyId::new(db, make_impl_trait(opaque_idx)); |
| <a href=#84 id=84 data-nosnippet>84</a> result.push(opaque_id.into()); |
| <a href=#85 id=85 data-nosnippet>85</a> } |
| <a href=#86 id=86 data-nosnippet>86</a> } |
| <a href=#87 id=87 data-nosnippet>87</a> } |
| <a href=#88 id=88 data-nosnippet>88</a>} |
| <a href=#89 id=89 data-nosnippet>89</a> |
| <a href=#90 id=90 data-nosnippet>90</a><span class="comment">// These are firewall queries to prevent drawing dependencies between infers: |
| <a href=#91 id=91 data-nosnippet>91</a> |
| <a href=#92 id=92 data-nosnippet>92</a></span><span class="attr">#[salsa::tracked(returns(<span class="kw-2">ref</span>))] |
| <a href=#93 id=93 data-nosnippet>93</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>rpit_hidden_types<<span class="lifetime">'db</span>>( |
| <a href=#94 id=94 data-nosnippet>94</a> db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>HirDatabase, |
| <a href=#95 id=95 data-nosnippet>95</a> function: FunctionId, |
| <a href=#96 id=96 data-nosnippet>96</a>) -> ArenaMap<ImplTraitIdx, StoredEarlyBinder<StoredTy>> { |
| <a href=#97 id=97 data-nosnippet>97</a> <span class="kw">let </span>infer = InferenceResult::for_body(db, function.into()); |
| <a href=#98 id=98 data-nosnippet>98</a> <span class="kw">let </span><span class="kw-2">mut </span>result = ArenaMap::new(); |
| <a href=#99 id=99 data-nosnippet>99</a> <span class="kw">for </span>(opaque, hidden_type) <span class="kw">in </span>infer.return_position_impl_trait_types(db) { |
| <a href=#100 id=100 data-nosnippet>100</a> result.insert(opaque, StoredEarlyBinder::bind(hidden_type.store())); |
| <a href=#101 id=101 data-nosnippet>101</a> } |
| <a href=#102 id=102 data-nosnippet>102</a> result.shrink_to_fit(); |
| <a href=#103 id=103 data-nosnippet>103</a> result |
| <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="attr">#[salsa::tracked(returns(<span class="kw-2">ref</span>))] |
| <a href=#107 id=107 data-nosnippet>107</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>tait_hidden_types<<span class="lifetime">'db</span>>( |
| <a href=#108 id=108 data-nosnippet>108</a> db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>HirDatabase, |
| <a href=#109 id=109 data-nosnippet>109</a> type_alias: TypeAliasId, |
| <a href=#110 id=110 data-nosnippet>110</a>) -> ArenaMap<ImplTraitIdx, StoredEarlyBinder<StoredTy>> { |
| <a href=#111 id=111 data-nosnippet>111</a> <span class="comment">// Call this first, to not perform redundant work if there are no TAITs. |
| <a href=#112 id=112 data-nosnippet>112</a> </span><span class="kw">let </span><span class="prelude-val">Some</span>(taits_count) = ImplTraits::type_alias_impl_traits(db, type_alias) |
| <a href=#113 id=113 data-nosnippet>113</a> .as_deref() |
| <a href=#114 id=114 data-nosnippet>114</a> .map(|taits| taits.as_ref().skip_binder().impl_traits.len()) |
| <a href=#115 id=115 data-nosnippet>115</a> <span class="kw">else </span>{ |
| <a href=#116 id=116 data-nosnippet>116</a> <span class="kw">return </span>ArenaMap::new(); |
| <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">let </span>loc = type_alias.loc(db); |
| <a href=#120 id=120 data-nosnippet>120</a> <span class="kw">let </span>module = loc.module(db); |
| <a href=#121 id=121 data-nosnippet>121</a> <span class="kw">let </span>interner = DbInterner::new_with(db, module.krate(db)); |
| <a href=#122 id=122 data-nosnippet>122</a> <span class="kw">let </span>infcx = interner.infer_ctxt().build(TypingMode::non_body_analysis()); |
| <a href=#123 id=123 data-nosnippet>123</a> <span class="kw">let </span><span class="kw-2">mut </span>ocx = ObligationCtxt::new(<span class="kw-2">&</span>infcx); |
| <a href=#124 id=124 data-nosnippet>124</a> <span class="kw">let </span>cause = ObligationCause::dummy(); |
| <a href=#125 id=125 data-nosnippet>125</a> <span class="kw">let </span>param_env = db.trait_environment(type_alias.into()); |
| <a href=#126 id=126 data-nosnippet>126</a> |
| <a href=#127 id=127 data-nosnippet>127</a> <span class="kw">let </span>defining_bodies = tait_defining_bodies(db, <span class="kw-2">&</span>loc); |
| <a href=#128 id=128 data-nosnippet>128</a> |
| <a href=#129 id=129 data-nosnippet>129</a> <span class="kw">let </span><span class="kw-2">mut </span>result = ArenaMap::with_capacity(taits_count); |
| <a href=#130 id=130 data-nosnippet>130</a> <span class="kw">for </span>defining_body <span class="kw">in </span>defining_bodies { |
| <a href=#131 id=131 data-nosnippet>131</a> <span class="kw">let </span>infer = InferenceResult::for_body(db, defining_body); |
| <a href=#132 id=132 data-nosnippet>132</a> <span class="kw">for </span>(<span class="kw-2">&</span>opaque, hidden_type) <span class="kw">in </span><span class="kw-2">&</span>infer.type_of_opaque { |
| <a href=#133 id=133 data-nosnippet>133</a> <span class="kw">let </span>ImplTraitId::TypeAliasImplTrait(opaque_owner, opaque_idx) = opaque.loc(db) <span class="kw">else </span>{ |
| <a href=#134 id=134 data-nosnippet>134</a> <span class="kw">continue</span>; |
| <a href=#135 id=135 data-nosnippet>135</a> }; |
| <a href=#136 id=136 data-nosnippet>136</a> <span class="kw">if </span><span class="macro">opaque_owner !</span>= type_alias { |
| <a href=#137 id=137 data-nosnippet>137</a> <span class="kw">continue</span>; |
| <a href=#138 id=138 data-nosnippet>138</a> } |
| <a href=#139 id=139 data-nosnippet>139</a> <span class="comment">// In the presence of errors, we attempt to create a unified type from all |
| <a href=#140 id=140 data-nosnippet>140</a> // types. rustc doesn't do that, but this should improve the experience. |
| <a href=#141 id=141 data-nosnippet>141</a> </span><span class="kw">let </span>hidden_type = infcx.insert_type_vars(hidden_type.as_ref()); |
| <a href=#142 id=142 data-nosnippet>142</a> <span class="kw">match </span>result.entry(opaque_idx) { |
| <a href=#143 id=143 data-nosnippet>143</a> la_arena::Entry::Vacant(entry) => { |
| <a href=#144 id=144 data-nosnippet>144</a> entry.insert(StoredEarlyBinder::bind(hidden_type.store())); |
| <a href=#145 id=145 data-nosnippet>145</a> } |
| <a href=#146 id=146 data-nosnippet>146</a> la_arena::Entry::Occupied(entry) => { |
| <a href=#147 id=147 data-nosnippet>147</a> <span class="kw">_ </span>= ocx.eq( |
| <a href=#148 id=148 data-nosnippet>148</a> <span class="kw-2">&</span>cause, |
| <a href=#149 id=149 data-nosnippet>149</a> param_env, |
| <a href=#150 id=150 data-nosnippet>150</a> entry.get().get().instantiate_identity(), |
| <a href=#151 id=151 data-nosnippet>151</a> hidden_type, |
| <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> } |
| <a href=#155 id=155 data-nosnippet>155</a> } |
| <a href=#156 id=156 data-nosnippet>156</a> } |
| <a href=#157 id=157 data-nosnippet>157</a> |
| <a href=#158 id=158 data-nosnippet>158</a> <span class="kw">_ </span>= ocx.try_evaluate_obligations(); |
| <a href=#159 id=159 data-nosnippet>159</a> |
| <a href=#160 id=160 data-nosnippet>160</a> <span class="comment">// Fill missing entries. |
| <a href=#161 id=161 data-nosnippet>161</a> </span><span class="kw">for </span>idx <span class="kw">in </span><span class="number">0</span>..taits_count { |
| <a href=#162 id=162 data-nosnippet>162</a> <span class="kw">let </span>idx = la_arena::Idx::from_raw(la_arena::RawIdx::from_u32(idx <span class="kw">as </span>u32)); |
| <a href=#163 id=163 data-nosnippet>163</a> <span class="kw">match </span>result.entry(idx) { |
| <a href=#164 id=164 data-nosnippet>164</a> la_arena::Entry::Vacant(entry) => { |
| <a href=#165 id=165 data-nosnippet>165</a> entry.insert(StoredEarlyBinder::bind( |
| <a href=#166 id=166 data-nosnippet>166</a> Ty::new_error(interner, ErrorGuaranteed).store(), |
| <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> la_arena::Entry::Occupied(<span class="kw-2">mut </span>entry) => { |
| <a href=#170 id=170 data-nosnippet>170</a> <span class="kw">let </span>hidden_type = entry.get().get().skip_binder(); |
| <a href=#171 id=171 data-nosnippet>171</a> <span class="kw">let </span>hidden_type = |
| <a href=#172 id=172 data-nosnippet>172</a> infcx.resolve_vars_if_possible(hidden_type).replace_infer_with_error(interner); |
| <a href=#173 id=173 data-nosnippet>173</a> <span class="kw-2">*</span>entry.get_mut() = StoredEarlyBinder::bind(hidden_type.store()); |
| <a href=#174 id=174 data-nosnippet>174</a> } |
| <a href=#175 id=175 data-nosnippet>175</a> } |
| <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> result |
| <a href=#179 id=179 data-nosnippet>179</a>} |
| <a href=#180 id=180 data-nosnippet>180</a> |
| <a href=#181 id=181 data-nosnippet>181</a><span class="kw">fn </span>tait_defining_bodies( |
| <a href=#182 id=182 data-nosnippet>182</a> db: <span class="kw-2">&</span><span class="kw">dyn </span>HirDatabase, |
| <a href=#183 id=183 data-nosnippet>183</a> loc: <span class="kw-2">&</span>AssocItemLoc<ast::TypeAlias>, |
| <a href=#184 id=184 data-nosnippet>184</a>) -> Vec<DefWithBodyId> { |
| <a href=#185 id=185 data-nosnippet>185</a> <span class="kw">let </span>from_assoc_items = |assoc_items: <span class="kw-2">&</span>[(Name, AssocItemId)]| { |
| <a href=#186 id=186 data-nosnippet>186</a> <span class="comment">// Associated Type Position Impl Trait. |
| <a href=#187 id=187 data-nosnippet>187</a> </span>assoc_items |
| <a href=#188 id=188 data-nosnippet>188</a> .iter() |
| <a href=#189 id=189 data-nosnippet>189</a> .filter_map(|<span class="kw-2">&</span>(<span class="kw">_</span>, assoc_id)| <span class="kw">match </span>assoc_id { |
| <a href=#190 id=190 data-nosnippet>190</a> AssocItemId::FunctionId(it) => <span class="prelude-val">Some</span>(it.into()), |
| <a href=#191 id=191 data-nosnippet>191</a> AssocItemId::ConstId(it) => <span class="prelude-val">Some</span>(it.into()), |
| <a href=#192 id=192 data-nosnippet>192</a> AssocItemId::TypeAliasId(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#193 id=193 data-nosnippet>193</a> }) |
| <a href=#194 id=194 data-nosnippet>194</a> .collect() |
| <a href=#195 id=195 data-nosnippet>195</a> }; |
| <a href=#196 id=196 data-nosnippet>196</a> <span class="kw">match </span>loc.container { |
| <a href=#197 id=197 data-nosnippet>197</a> ItemContainerId::ImplId(impl_id) => { |
| <a href=#198 id=198 data-nosnippet>198</a> <span class="kw">if </span>db.impl_signature(impl_id).target_trait.is_some() { |
| <a href=#199 id=199 data-nosnippet>199</a> <span class="kw">return </span>from_assoc_items(<span class="kw-2">&</span>impl_id.impl_items(db).items); |
| <a href=#200 id=200 data-nosnippet>200</a> } |
| <a href=#201 id=201 data-nosnippet>201</a> } |
| <a href=#202 id=202 data-nosnippet>202</a> ItemContainerId::TraitId(trait_id) => { |
| <a href=#203 id=203 data-nosnippet>203</a> <span class="kw">return </span>from_assoc_items(<span class="kw-2">&</span>trait_id.trait_items(db).items); |
| <a href=#204 id=204 data-nosnippet>204</a> } |
| <a href=#205 id=205 data-nosnippet>205</a> <span class="kw">_ </span>=> {} |
| <a href=#206 id=206 data-nosnippet>206</a> } |
| <a href=#207 id=207 data-nosnippet>207</a> |
| <a href=#208 id=208 data-nosnippet>208</a> <span class="comment">// FIXME: Support general TAITs, or decisively decide not to. |
| <a href=#209 id=209 data-nosnippet>209</a> </span>Vec::new() |
| <a href=#210 id=210 data-nosnippet>210</a>} |
| </code></pre></div></section></main></body></html> |
