| <!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/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="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>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">//! The type system. We currently use this to infer types for completion, hover |
| <a href=#2 id=2 data-nosnippet>2</a>//! information and various assists. |
| <a href=#3 id=3 data-nosnippet>3</a> |
| <a href=#4 id=4 data-nosnippet>4</a></span><span class="attr">#![cfg_attr(feature = <span class="string">"in-rust-tree"</span>, feature(rustc_private))] |
| <a href=#5 id=5 data-nosnippet>5</a></span><span class="comment">// It's useful to refer to code that is private in doc comments. |
| <a href=#6 id=6 data-nosnippet>6</a></span><span class="attr">#![allow(rustdoc::private_intra_doc_links)] |
| <a href=#7 id=7 data-nosnippet>7</a> |
| <a href=#8 id=8 data-nosnippet>8</a></span><span class="comment">// FIXME: We used to import `rustc_*` deps from `rustc_private` with `feature = "in-rust-tree" but |
| <a href=#9 id=9 data-nosnippet>9</a>// temporarily switched to crates.io versions due to hardships that working on them from rustc |
| <a href=#10 id=10 data-nosnippet>10</a>// demands corresponding changes on rust-analyzer at the same time. |
| <a href=#11 id=11 data-nosnippet>11</a>// For details, see the zulip discussion below: |
| <a href=#12 id=12 data-nosnippet>12</a>// https://rust-lang.zulipchat.com/#narrow/channel/185405-t-compiler.2Frust-analyzer/topic/relying.20on.20in-tree.20.60rustc_type_ir.60.2F.60rustc_next_trait_solver.60/with/541055689 |
| <a href=#13 id=13 data-nosnippet>13</a> |
| <a href=#14 id=14 data-nosnippet>14</a></span><span class="kw">extern crate </span>ra_ap_rustc_index <span class="kw">as </span>rustc_index; |
| <a href=#15 id=15 data-nosnippet>15</a> |
| <a href=#16 id=16 data-nosnippet>16</a><span class="kw">extern crate </span>ra_ap_rustc_abi <span class="kw">as </span>rustc_abi; |
| <a href=#17 id=17 data-nosnippet>17</a> |
| <a href=#18 id=18 data-nosnippet>18</a><span class="kw">extern crate </span>ra_ap_rustc_pattern_analysis <span class="kw">as </span>rustc_pattern_analysis; |
| <a href=#19 id=19 data-nosnippet>19</a> |
| <a href=#20 id=20 data-nosnippet>20</a><span class="kw">extern crate </span>ra_ap_rustc_ast_ir <span class="kw">as </span>rustc_ast_ir; |
| <a href=#21 id=21 data-nosnippet>21</a> |
| <a href=#22 id=22 data-nosnippet>22</a><span class="kw">extern crate </span>ra_ap_rustc_type_ir <span class="kw">as </span>rustc_type_ir; |
| <a href=#23 id=23 data-nosnippet>23</a> |
| <a href=#24 id=24 data-nosnippet>24</a><span class="kw">extern crate </span>ra_ap_rustc_next_trait_solver <span class="kw">as </span>rustc_next_trait_solver; |
| <a href=#25 id=25 data-nosnippet>25</a> |
| <a href=#26 id=26 data-nosnippet>26</a><span class="kw">extern crate </span><span class="self">self </span><span class="kw">as </span>hir_ty; |
| <a href=#27 id=27 data-nosnippet>27</a> |
| <a href=#28 id=28 data-nosnippet>28</a><span class="kw">pub mod </span>builtin_derive; |
| <a href=#29 id=29 data-nosnippet>29</a><span class="kw">mod </span>infer; |
| <a href=#30 id=30 data-nosnippet>30</a><span class="kw">mod </span>inhabitedness; |
| <a href=#31 id=31 data-nosnippet>31</a><span class="kw">mod </span>lower; |
| <a href=#32 id=32 data-nosnippet>32</a><span class="kw">pub mod </span>next_solver; |
| <a href=#33 id=33 data-nosnippet>33</a><span class="kw">mod </span>opaques; |
| <a href=#34 id=34 data-nosnippet>34</a><span class="kw">mod </span>representability; |
| <a href=#35 id=35 data-nosnippet>35</a><span class="kw">mod </span>specialization; |
| <a href=#36 id=36 data-nosnippet>36</a><span class="kw">mod </span>target_feature; |
| <a href=#37 id=37 data-nosnippet>37</a><span class="kw">mod </span>utils; |
| <a href=#38 id=38 data-nosnippet>38</a><span class="kw">mod </span>variance; |
| <a href=#39 id=39 data-nosnippet>39</a> |
| <a href=#40 id=40 data-nosnippet>40</a><span class="kw">pub mod </span>autoderef; |
| <a href=#41 id=41 data-nosnippet>41</a><span class="kw">pub mod </span>consteval; |
| <a href=#42 id=42 data-nosnippet>42</a><span class="kw">pub mod </span>db; |
| <a href=#43 id=43 data-nosnippet>43</a><span class="kw">pub mod </span>diagnostics; |
| <a href=#44 id=44 data-nosnippet>44</a><span class="kw">pub mod </span>display; |
| <a href=#45 id=45 data-nosnippet>45</a><span class="kw">pub mod </span>drop; |
| <a href=#46 id=46 data-nosnippet>46</a><span class="kw">pub mod </span>dyn_compatibility; |
| <a href=#47 id=47 data-nosnippet>47</a><span class="kw">pub mod </span>generics; |
| <a href=#48 id=48 data-nosnippet>48</a><span class="kw">pub mod </span>lang_items; |
| <a href=#49 id=49 data-nosnippet>49</a><span class="kw">pub mod </span>layout; |
| <a href=#50 id=50 data-nosnippet>50</a><span class="kw">pub mod </span>method_resolution; |
| <a href=#51 id=51 data-nosnippet>51</a><span class="kw">pub mod </span>mir; |
| <a href=#52 id=52 data-nosnippet>52</a><span class="kw">pub mod </span>primitive; |
| <a href=#53 id=53 data-nosnippet>53</a><span class="kw">pub mod </span>traits; |
| <a href=#54 id=54 data-nosnippet>54</a><span class="kw">pub mod </span>upvars; |
| <a href=#55 id=55 data-nosnippet>55</a> |
| <a href=#56 id=56 data-nosnippet>56</a><span class="attr">#[cfg(test)] |
| <a href=#57 id=57 data-nosnippet>57</a></span><span class="kw">mod </span>test_db; |
| <a href=#58 id=58 data-nosnippet>58</a><span class="attr">#[cfg(test)] |
| <a href=#59 id=59 data-nosnippet>59</a></span><span class="kw">mod </span>tests; |
| <a href=#60 id=60 data-nosnippet>60</a> |
| <a href=#61 id=61 data-nosnippet>61</a><span class="kw">use </span>std::{hash::Hash, ops::ControlFlow}; |
| <a href=#62 id=62 data-nosnippet>62</a> |
| <a href=#63 id=63 data-nosnippet>63</a><span class="kw">use </span>hir_def::{ |
| <a href=#64 id=64 data-nosnippet>64</a> CallableDefId, GenericDefId, TypeAliasId, TypeOrConstParamId, TypeParamId, |
| <a href=#65 id=65 data-nosnippet>65</a> hir::generics::GenericParams, resolver::TypeNs, type_ref::Rawness, |
| <a href=#66 id=66 data-nosnippet>66</a>}; |
| <a href=#67 id=67 data-nosnippet>67</a><span class="kw">use </span>hir_expand::name::Name; |
| <a href=#68 id=68 data-nosnippet>68</a><span class="kw">use </span>indexmap::{IndexMap, map::Entry}; |
| <a href=#69 id=69 data-nosnippet>69</a><span class="kw">use </span>intern::{Symbol, sym}; |
| <a href=#70 id=70 data-nosnippet>70</a><span class="kw">use </span>macros::GenericTypeVisitable; |
| <a href=#71 id=71 data-nosnippet>71</a><span class="kw">use </span>mir::{MirEvalError, VTableMap}; |
| <a href=#72 id=72 data-nosnippet>72</a><span class="kw">use </span>rustc_hash::{FxBuildHasher, FxHashMap, FxHashSet}; |
| <a href=#73 id=73 data-nosnippet>73</a><span class="kw">use </span>rustc_type_ir::{ |
| <a href=#74 id=74 data-nosnippet>74</a> BoundVarIndexKind, TypeSuperVisitable, TypeVisitableExt, UpcastFrom, |
| <a href=#75 id=75 data-nosnippet>75</a> inherent::{IntoKind, Ty <span class="kw">as _</span>}, |
| <a href=#76 id=76 data-nosnippet>76</a>}; |
| <a href=#77 id=77 data-nosnippet>77</a><span class="kw">use </span>syntax::ast::{ConstArg, make}; |
| <a href=#78 id=78 data-nosnippet>78</a><span class="kw">use </span>traits::FnTrait; |
| <a href=#79 id=79 data-nosnippet>79</a> |
| <a href=#80 id=80 data-nosnippet>80</a><span class="kw">use </span>crate::{ |
| <a href=#81 id=81 data-nosnippet>81</a> db::HirDatabase, |
| <a href=#82 id=82 data-nosnippet>82</a> display::{DisplayTarget, HirDisplay}, |
| <a href=#83 id=83 data-nosnippet>83</a> infer::unify::InferenceTable, |
| <a href=#84 id=84 data-nosnippet>84</a> lower::SupertraitsInfo, |
| <a href=#85 id=85 data-nosnippet>85</a> next_solver::{ |
| <a href=#86 id=86 data-nosnippet>86</a> AliasTy, Binder, BoundConst, BoundRegion, BoundRegionKind, BoundTy, BoundTyKind, Canonical, |
| <a href=#87 id=87 data-nosnippet>87</a> CanonicalVarKind, CanonicalVars, ClauseKind, Const, ConstKind, DbInterner, FnSig, |
| <a href=#88 id=88 data-nosnippet>88</a> GenericArgs, PolyFnSig, Predicate, Region, RegionKind, TraitRef, Ty, TyKind, Tys, abi, |
| <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 class="kw">pub use </span>autoderef::autoderef; |
| <a href=#93 id=93 data-nosnippet>93</a><span class="kw">pub use </span>infer::{ |
| <a href=#94 id=94 data-nosnippet>94</a> Adjust, Adjustment, AutoBorrow, BindingMode, InferenceDiagnostic, InferenceResult, |
| <a href=#95 id=95 data-nosnippet>95</a> InferenceTyDiagnosticSource, OverloadedDeref, PointerCast, |
| <a href=#96 id=96 data-nosnippet>96</a> cast::CastError, |
| <a href=#97 id=97 data-nosnippet>97</a> closure::analysis::{CaptureKind, CapturedItem}, |
| <a href=#98 id=98 data-nosnippet>98</a> could_coerce, could_unify, could_unify_deeply, infer_query_with_inspect, |
| <a href=#99 id=99 data-nosnippet>99</a>}; |
| <a href=#100 id=100 data-nosnippet>100</a><span class="kw">pub use </span>lower::{ |
| <a href=#101 id=101 data-nosnippet>101</a> GenericPredicates, ImplTraits, LifetimeElisionKind, TyDefId, TyLoweringContext, ValueTyDefId, |
| <a href=#102 id=102 data-nosnippet>102</a> diagnostics::<span class="kw-2">*</span>, |
| <a href=#103 id=103 data-nosnippet>103</a>}; |
| <a href=#104 id=104 data-nosnippet>104</a><span class="kw">pub use </span>next_solver::interner::{attach_db, attach_db_allow_change, with_attached_db}; |
| <a href=#105 id=105 data-nosnippet>105</a><span class="kw">pub use </span>target_feature::TargetFeatures; |
| <a href=#106 id=106 data-nosnippet>106</a><span class="kw">pub use </span>traits::{ParamEnvAndCrate, check_orphan_rules}; |
| <a href=#107 id=107 data-nosnippet>107</a><span class="kw">pub use </span>utils::{ |
| <a href=#108 id=108 data-nosnippet>108</a> TargetFeatureIsSafeInTarget, Unsafety, all_super_traits, direct_super_traits, |
| <a href=#109 id=109 data-nosnippet>109</a> is_fn_unsafe_to_call, target_feature_is_safe_in_target, |
| <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="doccomment">/// A constant can have reference to other things. Memory map job is holding |
| <a href=#113 id=113 data-nosnippet>113</a>/// the necessary bits of memory of the const eval session to keep the constant |
| <a href=#114 id=114 data-nosnippet>114</a>/// meaningful. |
| <a href=#115 id=115 data-nosnippet>115</a></span><span class="attr">#[derive(Debug, Default, Clone, PartialEq, Eq, GenericTypeVisitable)] |
| <a href=#116 id=116 data-nosnippet>116</a></span><span class="kw">pub enum </span>MemoryMap<<span class="lifetime">'db</span>> { |
| <a href=#117 id=117 data-nosnippet>117</a> <span class="attr">#[default] |
| <a href=#118 id=118 data-nosnippet>118</a> </span>Empty, |
| <a href=#119 id=119 data-nosnippet>119</a> Simple(Box<[u8]>), |
| <a href=#120 id=120 data-nosnippet>120</a> Complex(Box<ComplexMemoryMap<<span class="lifetime">'db</span>>>), |
| <a href=#121 id=121 data-nosnippet>121</a>} |
| <a href=#122 id=122 data-nosnippet>122</a> |
| <a href=#123 id=123 data-nosnippet>123</a><span class="attr">#[derive(Debug, Default, Clone, PartialEq, Eq, GenericTypeVisitable)] |
| <a href=#124 id=124 data-nosnippet>124</a></span><span class="kw">pub struct </span>ComplexMemoryMap<<span class="lifetime">'db</span>> { |
| <a href=#125 id=125 data-nosnippet>125</a> memory: IndexMap<usize, Box<[u8]>, FxBuildHasher>, |
| <a href=#126 id=126 data-nosnippet>126</a> vtable: VTableMap<<span class="lifetime">'db</span>>, |
| <a href=#127 id=127 data-nosnippet>127</a>} |
| <a href=#128 id=128 data-nosnippet>128</a> |
| <a href=#129 id=129 data-nosnippet>129</a><span class="kw">impl </span>ComplexMemoryMap<<span class="lifetime">'_</span>> { |
| <a href=#130 id=130 data-nosnippet>130</a> <span class="kw">fn </span>insert(<span class="kw-2">&mut </span><span class="self">self</span>, addr: usize, val: Box<[u8]>) { |
| <a href=#131 id=131 data-nosnippet>131</a> <span class="kw">match </span><span class="self">self</span>.memory.entry(addr) { |
| <a href=#132 id=132 data-nosnippet>132</a> Entry::Occupied(<span class="kw-2">mut </span>e) => { |
| <a href=#133 id=133 data-nosnippet>133</a> <span class="kw">if </span>e.get().len() < val.len() { |
| <a href=#134 id=134 data-nosnippet>134</a> e.insert(val); |
| <a href=#135 id=135 data-nosnippet>135</a> } |
| <a href=#136 id=136 data-nosnippet>136</a> } |
| <a href=#137 id=137 data-nosnippet>137</a> Entry::Vacant(e) => { |
| <a href=#138 id=138 data-nosnippet>138</a> e.insert(val); |
| <a href=#139 id=139 data-nosnippet>139</a> } |
| <a href=#140 id=140 data-nosnippet>140</a> } |
| <a href=#141 id=141 data-nosnippet>141</a> } |
| <a href=#142 id=142 data-nosnippet>142</a>} |
| <a href=#143 id=143 data-nosnippet>143</a> |
| <a href=#144 id=144 data-nosnippet>144</a><span class="kw">impl</span><<span class="lifetime">'db</span>> MemoryMap<<span class="lifetime">'db</span>> { |
| <a href=#145 id=145 data-nosnippet>145</a> <span class="kw">pub fn </span>vtable_ty(<span class="kw-2">&</span><span class="self">self</span>, id: usize) -> <span class="prelude-ty">Result</span><Ty<<span class="lifetime">'db</span>>, MirEvalError> { |
| <a href=#146 id=146 data-nosnippet>146</a> <span class="kw">match </span><span class="self">self </span>{ |
| <a href=#147 id=147 data-nosnippet>147</a> MemoryMap::Empty | MemoryMap::Simple(<span class="kw">_</span>) => <span class="prelude-val">Err</span>(MirEvalError::InvalidVTableId(id)), |
| <a href=#148 id=148 data-nosnippet>148</a> MemoryMap::Complex(cm) => cm.vtable.ty(id), |
| <a href=#149 id=149 data-nosnippet>149</a> } |
| <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">fn </span>simple(v: Box<[u8]>) -> <span class="self">Self </span>{ |
| <a href=#153 id=153 data-nosnippet>153</a> MemoryMap::Simple(v) |
| <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> <span class="doccomment">/// This functions convert each address by a function `f` which gets the byte intervals and assign an address |
| <a href=#157 id=157 data-nosnippet>157</a> /// to them. It is useful when you want to load a constant with a memory map in a new memory. You can pass an |
| <a href=#158 id=158 data-nosnippet>158</a> /// allocator function as `f` and it will return a mapping of old addresses to new addresses. |
| <a href=#159 id=159 data-nosnippet>159</a> </span><span class="kw">fn </span>transform_addresses( |
| <a href=#160 id=160 data-nosnippet>160</a> <span class="kw-2">&</span><span class="self">self</span>, |
| <a href=#161 id=161 data-nosnippet>161</a> <span class="kw-2">mut </span>f: <span class="kw">impl </span>FnMut(<span class="kw-2">&</span>[u8], usize) -> <span class="prelude-ty">Result</span><usize, MirEvalError>, |
| <a href=#162 id=162 data-nosnippet>162</a> ) -> <span class="prelude-ty">Result</span><FxHashMap<usize, usize>, MirEvalError> { |
| <a href=#163 id=163 data-nosnippet>163</a> <span class="kw">let </span><span class="kw-2">mut </span>transform = |(addr, val): (<span class="kw-2">&</span>usize, <span class="kw-2">&</span>[u8])| { |
| <a href=#164 id=164 data-nosnippet>164</a> <span class="kw">let </span>addr = <span class="kw-2">*</span>addr; |
| <a href=#165 id=165 data-nosnippet>165</a> <span class="kw">let </span>align = <span class="kw">if </span>addr == <span class="number">0 </span>{ <span class="number">64 </span>} <span class="kw">else </span>{ (addr - (addr & (addr - <span class="number">1</span>))).min(<span class="number">64</span>) }; |
| <a href=#166 id=166 data-nosnippet>166</a> f(val, align).map(|it| (addr, it)) |
| <a href=#167 id=167 data-nosnippet>167</a> }; |
| <a href=#168 id=168 data-nosnippet>168</a> <span class="kw">match </span><span class="self">self </span>{ |
| <a href=#169 id=169 data-nosnippet>169</a> MemoryMap::Empty => <span class="prelude-val">Ok</span>(Default::default()), |
| <a href=#170 id=170 data-nosnippet>170</a> MemoryMap::Simple(m) => transform((<span class="kw-2">&</span><span class="number">0</span>, m)).map(|(addr, val)| { |
| <a href=#171 id=171 data-nosnippet>171</a> <span class="kw">let </span><span class="kw-2">mut </span>map = FxHashMap::with_capacity_and_hasher(<span class="number">1</span>, rustc_hash::FxBuildHasher); |
| <a href=#172 id=172 data-nosnippet>172</a> map.insert(addr, val); |
| <a href=#173 id=173 data-nosnippet>173</a> map |
| <a href=#174 id=174 data-nosnippet>174</a> }), |
| <a href=#175 id=175 data-nosnippet>175</a> MemoryMap::Complex(cm) => { |
| <a href=#176 id=176 data-nosnippet>176</a> cm.memory.iter().map(|(addr, val)| transform((addr, val))).collect() |
| <a href=#177 id=177 data-nosnippet>177</a> } |
| <a href=#178 id=178 data-nosnippet>178</a> } |
| <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>get(<span class="kw-2">&</span><span class="self">self</span>, addr: usize, size: usize) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>[u8]> { |
| <a href=#182 id=182 data-nosnippet>182</a> <span class="kw">if </span>size == <span class="number">0 </span>{ |
| <a href=#183 id=183 data-nosnippet>183</a> <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[]) |
| <a href=#184 id=184 data-nosnippet>184</a> } <span class="kw">else </span>{ |
| <a href=#185 id=185 data-nosnippet>185</a> <span class="kw">match </span><span class="self">self </span>{ |
| <a href=#186 id=186 data-nosnippet>186</a> MemoryMap::Empty => <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[]), |
| <a href=#187 id=187 data-nosnippet>187</a> MemoryMap::Simple(m) <span class="kw">if </span>addr == <span class="number">0 </span>=> m.get(<span class="number">0</span>..size), |
| <a href=#188 id=188 data-nosnippet>188</a> MemoryMap::Simple(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#189 id=189 data-nosnippet>189</a> MemoryMap::Complex(cm) => cm.memory.get(<span class="kw-2">&</span>addr)<span class="question-mark">?</span>.get(<span class="number">0</span>..size), |
| <a href=#190 id=190 data-nosnippet>190</a> } |
| <a href=#191 id=191 data-nosnippet>191</a> } |
| <a href=#192 id=192 data-nosnippet>192</a> } |
| <a href=#193 id=193 data-nosnippet>193</a>} |
| <a href=#194 id=194 data-nosnippet>194</a> |
| <a href=#195 id=195 data-nosnippet>195</a><span class="doccomment">/// Return an index of a parameter in the generic type parameter list by it's id. |
| <a href=#196 id=196 data-nosnippet>196</a></span><span class="kw">pub fn </span>param_idx(db: <span class="kw-2">&</span><span class="kw">dyn </span>HirDatabase, id: TypeOrConstParamId) -> <span class="prelude-ty">Option</span><usize> { |
| <a href=#197 id=197 data-nosnippet>197</a> generics::generics(db, id.parent).type_or_const_param_idx(id) |
| <a href=#198 id=198 data-nosnippet>198</a>} |
| <a href=#199 id=199 data-nosnippet>199</a> |
| <a href=#200 id=200 data-nosnippet>200</a><span class="attr">#[derive(Debug, Copy, Clone, Eq)] |
| <a href=#201 id=201 data-nosnippet>201</a></span><span class="kw">pub enum </span>FnAbi { |
| <a href=#202 id=202 data-nosnippet>202</a> Aapcs, |
| <a href=#203 id=203 data-nosnippet>203</a> AapcsUnwind, |
| <a href=#204 id=204 data-nosnippet>204</a> AvrInterrupt, |
| <a href=#205 id=205 data-nosnippet>205</a> AvrNonBlockingInterrupt, |
| <a href=#206 id=206 data-nosnippet>206</a> C, |
| <a href=#207 id=207 data-nosnippet>207</a> CCmseNonsecureCall, |
| <a href=#208 id=208 data-nosnippet>208</a> CCmseNonsecureEntry, |
| <a href=#209 id=209 data-nosnippet>209</a> CDecl, |
| <a href=#210 id=210 data-nosnippet>210</a> CDeclUnwind, |
| <a href=#211 id=211 data-nosnippet>211</a> CUnwind, |
| <a href=#212 id=212 data-nosnippet>212</a> Efiapi, |
| <a href=#213 id=213 data-nosnippet>213</a> Fastcall, |
| <a href=#214 id=214 data-nosnippet>214</a> FastcallUnwind, |
| <a href=#215 id=215 data-nosnippet>215</a> Msp430Interrupt, |
| <a href=#216 id=216 data-nosnippet>216</a> PtxKernel, |
| <a href=#217 id=217 data-nosnippet>217</a> RiscvInterruptM, |
| <a href=#218 id=218 data-nosnippet>218</a> RiscvInterruptS, |
| <a href=#219 id=219 data-nosnippet>219</a> Rust, |
| <a href=#220 id=220 data-nosnippet>220</a> RustCall, |
| <a href=#221 id=221 data-nosnippet>221</a> RustCold, |
| <a href=#222 id=222 data-nosnippet>222</a> RustIntrinsic, |
| <a href=#223 id=223 data-nosnippet>223</a> Stdcall, |
| <a href=#224 id=224 data-nosnippet>224</a> StdcallUnwind, |
| <a href=#225 id=225 data-nosnippet>225</a> System, |
| <a href=#226 id=226 data-nosnippet>226</a> SystemUnwind, |
| <a href=#227 id=227 data-nosnippet>227</a> Sysv64, |
| <a href=#228 id=228 data-nosnippet>228</a> Sysv64Unwind, |
| <a href=#229 id=229 data-nosnippet>229</a> Thiscall, |
| <a href=#230 id=230 data-nosnippet>230</a> ThiscallUnwind, |
| <a href=#231 id=231 data-nosnippet>231</a> Unadjusted, |
| <a href=#232 id=232 data-nosnippet>232</a> Vectorcall, |
| <a href=#233 id=233 data-nosnippet>233</a> VectorcallUnwind, |
| <a href=#234 id=234 data-nosnippet>234</a> Wasm, |
| <a href=#235 id=235 data-nosnippet>235</a> Win64, |
| <a href=#236 id=236 data-nosnippet>236</a> Win64Unwind, |
| <a href=#237 id=237 data-nosnippet>237</a> X86Interrupt, |
| <a href=#238 id=238 data-nosnippet>238</a> RustPreserveNone, |
| <a href=#239 id=239 data-nosnippet>239</a> Unknown, |
| <a href=#240 id=240 data-nosnippet>240</a>} |
| <a href=#241 id=241 data-nosnippet>241</a> |
| <a href=#242 id=242 data-nosnippet>242</a><span class="kw">impl </span>PartialEq <span class="kw">for </span>FnAbi { |
| <a href=#243 id=243 data-nosnippet>243</a> <span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, _other: <span class="kw-2">&</span><span class="self">Self</span>) -> bool { |
| <a href=#244 id=244 data-nosnippet>244</a> <span class="comment">// FIXME: Proper equality breaks `coercion::two_closures_lub` test |
| <a href=#245 id=245 data-nosnippet>245</a> </span><span class="bool-val">true |
| <a href=#246 id=246 data-nosnippet>246</a> </span>} |
| <a href=#247 id=247 data-nosnippet>247</a>} |
| <a href=#248 id=248 data-nosnippet>248</a> |
| <a href=#249 id=249 data-nosnippet>249</a><span class="kw">impl </span>Hash <span class="kw">for </span>FnAbi { |
| <a href=#250 id=250 data-nosnippet>250</a> <span class="kw">fn </span>hash<H: std::hash::Hasher>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>H) { |
| <a href=#251 id=251 data-nosnippet>251</a> <span class="comment">// Required because of the FIXME above and due to us implementing `Eq`, without this |
| <a href=#252 id=252 data-nosnippet>252</a> // we would break the `Hash` + `Eq` contract |
| <a href=#253 id=253 data-nosnippet>253</a> </span>core::mem::discriminant(<span class="kw-2">&</span><span class="self">Self</span>::Unknown).hash(state); |
| <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><span class="kw">impl </span>FnAbi { |
| <a href=#258 id=258 data-nosnippet>258</a> <span class="attr">#[rustfmt::skip] |
| <a href=#259 id=259 data-nosnippet>259</a> </span><span class="kw">pub fn </span>from_symbol(s: <span class="kw-2">&</span>Symbol) -> FnAbi { |
| <a href=#260 id=260 data-nosnippet>260</a> <span class="kw">match </span>s { |
| <a href=#261 id=261 data-nosnippet>261</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::aapcs_dash_unwind => FnAbi::AapcsUnwind, |
| <a href=#262 id=262 data-nosnippet>262</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::aapcs => FnAbi::Aapcs, |
| <a href=#263 id=263 data-nosnippet>263</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::avr_dash_interrupt => FnAbi::AvrInterrupt, |
| <a href=#264 id=264 data-nosnippet>264</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::avr_dash_non_dash_blocking_dash_interrupt => FnAbi::AvrNonBlockingInterrupt, |
| <a href=#265 id=265 data-nosnippet>265</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::C_dash_cmse_dash_nonsecure_dash_call => FnAbi::CCmseNonsecureCall, |
| <a href=#266 id=266 data-nosnippet>266</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::C_dash_cmse_dash_nonsecure_dash_entry => FnAbi::CCmseNonsecureEntry, |
| <a href=#267 id=267 data-nosnippet>267</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::C_dash_unwind => FnAbi::CUnwind, |
| <a href=#268 id=268 data-nosnippet>268</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::C => FnAbi::C, |
| <a href=#269 id=269 data-nosnippet>269</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::cdecl_dash_unwind => FnAbi::CDeclUnwind, |
| <a href=#270 id=270 data-nosnippet>270</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::cdecl => FnAbi::CDecl, |
| <a href=#271 id=271 data-nosnippet>271</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::efiapi => FnAbi::Efiapi, |
| <a href=#272 id=272 data-nosnippet>272</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::fastcall_dash_unwind => FnAbi::FastcallUnwind, |
| <a href=#273 id=273 data-nosnippet>273</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::fastcall => FnAbi::Fastcall, |
| <a href=#274 id=274 data-nosnippet>274</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::msp430_dash_interrupt => FnAbi::Msp430Interrupt, |
| <a href=#275 id=275 data-nosnippet>275</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::ptx_dash_kernel => FnAbi::PtxKernel, |
| <a href=#276 id=276 data-nosnippet>276</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::riscv_dash_interrupt_dash_m => FnAbi::RiscvInterruptM, |
| <a href=#277 id=277 data-nosnippet>277</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::riscv_dash_interrupt_dash_s => FnAbi::RiscvInterruptS, |
| <a href=#278 id=278 data-nosnippet>278</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::rust_dash_call => FnAbi::RustCall, |
| <a href=#279 id=279 data-nosnippet>279</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::rust_dash_cold => FnAbi::RustCold, |
| <a href=#280 id=280 data-nosnippet>280</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::rust_dash_preserve_dash_none => FnAbi::RustPreserveNone, |
| <a href=#281 id=281 data-nosnippet>281</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::rust_dash_intrinsic => FnAbi::RustIntrinsic, |
| <a href=#282 id=282 data-nosnippet>282</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::Rust => FnAbi::Rust, |
| <a href=#283 id=283 data-nosnippet>283</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::stdcall_dash_unwind => FnAbi::StdcallUnwind, |
| <a href=#284 id=284 data-nosnippet>284</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::stdcall => FnAbi::Stdcall, |
| <a href=#285 id=285 data-nosnippet>285</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::system_dash_unwind => FnAbi::SystemUnwind, |
| <a href=#286 id=286 data-nosnippet>286</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::system => FnAbi::System, |
| <a href=#287 id=287 data-nosnippet>287</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::sysv64_dash_unwind => FnAbi::Sysv64Unwind, |
| <a href=#288 id=288 data-nosnippet>288</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::sysv64 => FnAbi::Sysv64, |
| <a href=#289 id=289 data-nosnippet>289</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::thiscall_dash_unwind => FnAbi::ThiscallUnwind, |
| <a href=#290 id=290 data-nosnippet>290</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::thiscall => FnAbi::Thiscall, |
| <a href=#291 id=291 data-nosnippet>291</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::unadjusted => FnAbi::Unadjusted, |
| <a href=#292 id=292 data-nosnippet>292</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::vectorcall_dash_unwind => FnAbi::VectorcallUnwind, |
| <a href=#293 id=293 data-nosnippet>293</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::vectorcall => FnAbi::Vectorcall, |
| <a href=#294 id=294 data-nosnippet>294</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::wasm => FnAbi::Wasm, |
| <a href=#295 id=295 data-nosnippet>295</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::win64_dash_unwind => FnAbi::Win64Unwind, |
| <a href=#296 id=296 data-nosnippet>296</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::win64 => FnAbi::Win64, |
| <a href=#297 id=297 data-nosnippet>297</a> s <span class="kw">if </span><span class="kw-2">*</span>s == sym::x86_dash_interrupt => FnAbi::X86Interrupt, |
| <a href=#298 id=298 data-nosnippet>298</a> <span class="kw">_ </span>=> FnAbi::Unknown, |
| <a href=#299 id=299 data-nosnippet>299</a> } |
| <a href=#300 id=300 data-nosnippet>300</a> } |
| <a href=#301 id=301 data-nosnippet>301</a> |
| <a href=#302 id=302 data-nosnippet>302</a> <span class="kw">pub fn </span>as_str(<span class="self">self</span>) -> <span class="kw-2">&</span><span class="lifetime">'static </span>str { |
| <a href=#303 id=303 data-nosnippet>303</a> <span class="kw">match </span><span class="self">self </span>{ |
| <a href=#304 id=304 data-nosnippet>304</a> FnAbi::Aapcs => <span class="string">"aapcs"</span>, |
| <a href=#305 id=305 data-nosnippet>305</a> FnAbi::AapcsUnwind => <span class="string">"aapcs-unwind"</span>, |
| <a href=#306 id=306 data-nosnippet>306</a> FnAbi::AvrInterrupt => <span class="string">"avr-interrupt"</span>, |
| <a href=#307 id=307 data-nosnippet>307</a> FnAbi::AvrNonBlockingInterrupt => <span class="string">"avr-non-blocking-interrupt"</span>, |
| <a href=#308 id=308 data-nosnippet>308</a> FnAbi::C => <span class="string">"C"</span>, |
| <a href=#309 id=309 data-nosnippet>309</a> FnAbi::CCmseNonsecureCall => <span class="string">"C-cmse-nonsecure-call"</span>, |
| <a href=#310 id=310 data-nosnippet>310</a> FnAbi::CCmseNonsecureEntry => <span class="string">"C-cmse-nonsecure-entry"</span>, |
| <a href=#311 id=311 data-nosnippet>311</a> FnAbi::CDecl => <span class="string">"C-decl"</span>, |
| <a href=#312 id=312 data-nosnippet>312</a> FnAbi::CDeclUnwind => <span class="string">"cdecl-unwind"</span>, |
| <a href=#313 id=313 data-nosnippet>313</a> FnAbi::CUnwind => <span class="string">"C-unwind"</span>, |
| <a href=#314 id=314 data-nosnippet>314</a> FnAbi::Efiapi => <span class="string">"efiapi"</span>, |
| <a href=#315 id=315 data-nosnippet>315</a> FnAbi::Fastcall => <span class="string">"fastcall"</span>, |
| <a href=#316 id=316 data-nosnippet>316</a> FnAbi::FastcallUnwind => <span class="string">"fastcall-unwind"</span>, |
| <a href=#317 id=317 data-nosnippet>317</a> FnAbi::Msp430Interrupt => <span class="string">"msp430-interrupt"</span>, |
| <a href=#318 id=318 data-nosnippet>318</a> FnAbi::PtxKernel => <span class="string">"ptx-kernel"</span>, |
| <a href=#319 id=319 data-nosnippet>319</a> FnAbi::RiscvInterruptM => <span class="string">"riscv-interrupt-m"</span>, |
| <a href=#320 id=320 data-nosnippet>320</a> FnAbi::RiscvInterruptS => <span class="string">"riscv-interrupt-s"</span>, |
| <a href=#321 id=321 data-nosnippet>321</a> FnAbi::Rust => <span class="string">"Rust"</span>, |
| <a href=#322 id=322 data-nosnippet>322</a> FnAbi::RustCall => <span class="string">"rust-call"</span>, |
| <a href=#323 id=323 data-nosnippet>323</a> FnAbi::RustCold => <span class="string">"rust-cold"</span>, |
| <a href=#324 id=324 data-nosnippet>324</a> FnAbi::RustPreserveNone => <span class="string">"rust-preserve-none"</span>, |
| <a href=#325 id=325 data-nosnippet>325</a> FnAbi::RustIntrinsic => <span class="string">"rust-intrinsic"</span>, |
| <a href=#326 id=326 data-nosnippet>326</a> FnAbi::Stdcall => <span class="string">"stdcall"</span>, |
| <a href=#327 id=327 data-nosnippet>327</a> FnAbi::StdcallUnwind => <span class="string">"stdcall-unwind"</span>, |
| <a href=#328 id=328 data-nosnippet>328</a> FnAbi::System => <span class="string">"system"</span>, |
| <a href=#329 id=329 data-nosnippet>329</a> FnAbi::SystemUnwind => <span class="string">"system-unwind"</span>, |
| <a href=#330 id=330 data-nosnippet>330</a> FnAbi::Sysv64 => <span class="string">"sysv64"</span>, |
| <a href=#331 id=331 data-nosnippet>331</a> FnAbi::Sysv64Unwind => <span class="string">"sysv64-unwind"</span>, |
| <a href=#332 id=332 data-nosnippet>332</a> FnAbi::Thiscall => <span class="string">"thiscall"</span>, |
| <a href=#333 id=333 data-nosnippet>333</a> FnAbi::ThiscallUnwind => <span class="string">"thiscall-unwind"</span>, |
| <a href=#334 id=334 data-nosnippet>334</a> FnAbi::Unadjusted => <span class="string">"unadjusted"</span>, |
| <a href=#335 id=335 data-nosnippet>335</a> FnAbi::Vectorcall => <span class="string">"vectorcall"</span>, |
| <a href=#336 id=336 data-nosnippet>336</a> FnAbi::VectorcallUnwind => <span class="string">"vectorcall-unwind"</span>, |
| <a href=#337 id=337 data-nosnippet>337</a> FnAbi::Wasm => <span class="string">"wasm"</span>, |
| <a href=#338 id=338 data-nosnippet>338</a> FnAbi::Win64 => <span class="string">"win64"</span>, |
| <a href=#339 id=339 data-nosnippet>339</a> FnAbi::Win64Unwind => <span class="string">"win64-unwind"</span>, |
| <a href=#340 id=340 data-nosnippet>340</a> FnAbi::X86Interrupt => <span class="string">"x86-interrupt"</span>, |
| <a href=#341 id=341 data-nosnippet>341</a> FnAbi::Unknown => <span class="string">"unknown-abi"</span>, |
| <a href=#342 id=342 data-nosnippet>342</a> } |
| <a href=#343 id=343 data-nosnippet>343</a> } |
| <a href=#344 id=344 data-nosnippet>344</a>} |
| <a href=#345 id=345 data-nosnippet>345</a> |
| <a href=#346 id=346 data-nosnippet>346</a><span class="attr">#[derive(Copy, Clone, PartialEq, Eq, Debug, Hash)] |
| <a href=#347 id=347 data-nosnippet>347</a></span><span class="kw">pub enum </span>ImplTraitId { |
| <a href=#348 id=348 data-nosnippet>348</a> ReturnTypeImplTrait(hir_def::FunctionId, next_solver::ImplTraitIdx), |
| <a href=#349 id=349 data-nosnippet>349</a> TypeAliasImplTrait(hir_def::TypeAliasId, next_solver::ImplTraitIdx), |
| <a href=#350 id=350 data-nosnippet>350</a>} |
| <a href=#351 id=351 data-nosnippet>351</a> |
| <a href=#352 id=352 data-nosnippet>352</a><span class="doccomment">/// 'Canonicalizes' the `t` by replacing any errors with new variables. Also |
| <a href=#353 id=353 data-nosnippet>353</a>/// ensures there are no unbound variables or inference variables anywhere in |
| <a href=#354 id=354 data-nosnippet>354</a>/// the `t`. |
| <a href=#355 id=355 data-nosnippet>355</a></span><span class="kw">pub fn </span>replace_errors_with_variables<<span class="lifetime">'db</span>, T>(interner: DbInterner<<span class="lifetime">'db</span>>, t: <span class="kw-2">&</span>T) -> Canonical<<span class="lifetime">'db</span>, T> |
| <a href=#356 id=356 data-nosnippet>356</a><span class="kw">where |
| <a href=#357 id=357 data-nosnippet>357</a> </span>T: rustc_type_ir::TypeFoldable<DbInterner<<span class="lifetime">'db</span>>> + Clone, |
| <a href=#358 id=358 data-nosnippet>358</a>{ |
| <a href=#359 id=359 data-nosnippet>359</a> <span class="kw">use </span>rustc_type_ir::{FallibleTypeFolder, TypeSuperFoldable}; |
| <a href=#360 id=360 data-nosnippet>360</a> <span class="kw">struct </span>ErrorReplacer<<span class="lifetime">'db</span>> { |
| <a href=#361 id=361 data-nosnippet>361</a> interner: DbInterner<<span class="lifetime">'db</span>>, |
| <a href=#362 id=362 data-nosnippet>362</a> vars: Vec<CanonicalVarKind<<span class="lifetime">'db</span>>>, |
| <a href=#363 id=363 data-nosnippet>363</a> binder: rustc_type_ir::DebruijnIndex, |
| <a href=#364 id=364 data-nosnippet>364</a> } |
| <a href=#365 id=365 data-nosnippet>365</a> <span class="kw">impl</span><<span class="lifetime">'db</span>> FallibleTypeFolder<DbInterner<<span class="lifetime">'db</span>>> <span class="kw">for </span>ErrorReplacer<<span class="lifetime">'db</span>> { |
| <a href=#366 id=366 data-nosnippet>366</a> <span class="attr">#[cfg(debug_assertions)] |
| <a href=#367 id=367 data-nosnippet>367</a> </span><span class="kw">type </span>Error = (); |
| <a href=#368 id=368 data-nosnippet>368</a> <span class="attr">#[cfg(not(debug_assertions))] |
| <a href=#369 id=369 data-nosnippet>369</a> </span><span class="kw">type </span>Error = std::convert::Infallible; |
| <a href=#370 id=370 data-nosnippet>370</a> |
| <a href=#371 id=371 data-nosnippet>371</a> <span class="kw">fn </span>cx(<span class="kw-2">&</span><span class="self">self</span>) -> DbInterner<<span class="lifetime">'db</span>> { |
| <a href=#372 id=372 data-nosnippet>372</a> <span class="self">self</span>.interner |
| <a href=#373 id=373 data-nosnippet>373</a> } |
| <a href=#374 id=374 data-nosnippet>374</a> |
| <a href=#375 id=375 data-nosnippet>375</a> <span class="kw">fn </span>try_fold_binder<T>(<span class="kw-2">&mut </span><span class="self">self</span>, t: Binder<<span class="lifetime">'db</span>, T>) -> <span class="prelude-ty">Result</span><Binder<<span class="lifetime">'db</span>, T>, <span class="self">Self</span>::Error> |
| <a href=#376 id=376 data-nosnippet>376</a> <span class="kw">where |
| <a href=#377 id=377 data-nosnippet>377</a> </span>T: rustc_type_ir::TypeFoldable<DbInterner<<span class="lifetime">'db</span>>>, |
| <a href=#378 id=378 data-nosnippet>378</a> { |
| <a href=#379 id=379 data-nosnippet>379</a> <span class="self">self</span>.binder.shift_in(<span class="number">1</span>); |
| <a href=#380 id=380 data-nosnippet>380</a> <span class="kw">let </span>result = t.try_super_fold_with(<span class="self">self</span>); |
| <a href=#381 id=381 data-nosnippet>381</a> <span class="self">self</span>.binder.shift_out(<span class="number">1</span>); |
| <a href=#382 id=382 data-nosnippet>382</a> result |
| <a href=#383 id=383 data-nosnippet>383</a> } |
| <a href=#384 id=384 data-nosnippet>384</a> |
| <a href=#385 id=385 data-nosnippet>385</a> <span class="kw">fn </span>try_fold_ty(<span class="kw-2">&mut </span><span class="self">self</span>, t: Ty<<span class="lifetime">'db</span>>) -> <span class="prelude-ty">Result</span><Ty<<span class="lifetime">'db</span>>, <span class="self">Self</span>::Error> { |
| <a href=#386 id=386 data-nosnippet>386</a> <span class="kw">if </span>!t.has_type_flags( |
| <a href=#387 id=387 data-nosnippet>387</a> rustc_type_ir::TypeFlags::HAS_ERROR |
| <a href=#388 id=388 data-nosnippet>388</a> | rustc_type_ir::TypeFlags::HAS_TY_INFER |
| <a href=#389 id=389 data-nosnippet>389</a> | rustc_type_ir::TypeFlags::HAS_CT_INFER |
| <a href=#390 id=390 data-nosnippet>390</a> | rustc_type_ir::TypeFlags::HAS_RE_INFER, |
| <a href=#391 id=391 data-nosnippet>391</a> ) { |
| <a href=#392 id=392 data-nosnippet>392</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(t); |
| <a href=#393 id=393 data-nosnippet>393</a> } |
| <a href=#394 id=394 data-nosnippet>394</a> |
| <a href=#395 id=395 data-nosnippet>395</a> <span class="attr">#[cfg(debug_assertions)] |
| <a href=#396 id=396 data-nosnippet>396</a> </span><span class="kw">let </span>error = || <span class="prelude-val">Err</span>(()); |
| <a href=#397 id=397 data-nosnippet>397</a> <span class="attr">#[cfg(not(debug_assertions))] |
| <a href=#398 id=398 data-nosnippet>398</a> </span><span class="kw">let </span>error = || <span class="prelude-val">Ok</span>(Ty::new_error(<span class="self">self</span>.interner, <span class="kw">crate</span>::next_solver::ErrorGuaranteed)); |
| <a href=#399 id=399 data-nosnippet>399</a> |
| <a href=#400 id=400 data-nosnippet>400</a> <span class="kw">match </span>t.kind() { |
| <a href=#401 id=401 data-nosnippet>401</a> TyKind::Error(<span class="kw">_</span>) => { |
| <a href=#402 id=402 data-nosnippet>402</a> <span class="kw">let </span>var = rustc_type_ir::BoundVar::from_usize(<span class="self">self</span>.vars.len()); |
| <a href=#403 id=403 data-nosnippet>403</a> <span class="self">self</span>.vars.push(CanonicalVarKind::Ty { |
| <a href=#404 id=404 data-nosnippet>404</a> ui: rustc_type_ir::UniverseIndex::ZERO, |
| <a href=#405 id=405 data-nosnippet>405</a> sub_root: var, |
| <a href=#406 id=406 data-nosnippet>406</a> }); |
| <a href=#407 id=407 data-nosnippet>407</a> <span class="prelude-val">Ok</span>(Ty::new_bound( |
| <a href=#408 id=408 data-nosnippet>408</a> <span class="self">self</span>.interner, |
| <a href=#409 id=409 data-nosnippet>409</a> <span class="self">self</span>.binder, |
| <a href=#410 id=410 data-nosnippet>410</a> BoundTy { var, kind: BoundTyKind::Anon }, |
| <a href=#411 id=411 data-nosnippet>411</a> )) |
| <a href=#412 id=412 data-nosnippet>412</a> } |
| <a href=#413 id=413 data-nosnippet>413</a> TyKind::Infer(<span class="kw">_</span>) => error(), |
| <a href=#414 id=414 data-nosnippet>414</a> TyKind::Bound(BoundVarIndexKind::Bound(index), <span class="kw">_</span>) <span class="kw">if </span>index > <span class="self">self</span>.binder => error(), |
| <a href=#415 id=415 data-nosnippet>415</a> <span class="kw">_ </span>=> t.try_super_fold_with(<span class="self">self</span>), |
| <a href=#416 id=416 data-nosnippet>416</a> } |
| <a href=#417 id=417 data-nosnippet>417</a> } |
| <a href=#418 id=418 data-nosnippet>418</a> |
| <a href=#419 id=419 data-nosnippet>419</a> <span class="kw">fn </span>try_fold_const(<span class="kw-2">&mut </span><span class="self">self</span>, ct: Const<<span class="lifetime">'db</span>>) -> <span class="prelude-ty">Result</span><Const<<span class="lifetime">'db</span>>, <span class="self">Self</span>::Error> { |
| <a href=#420 id=420 data-nosnippet>420</a> <span class="kw">if </span>!ct.has_type_flags( |
| <a href=#421 id=421 data-nosnippet>421</a> rustc_type_ir::TypeFlags::HAS_ERROR |
| <a href=#422 id=422 data-nosnippet>422</a> | rustc_type_ir::TypeFlags::HAS_TY_INFER |
| <a href=#423 id=423 data-nosnippet>423</a> | rustc_type_ir::TypeFlags::HAS_CT_INFER |
| <a href=#424 id=424 data-nosnippet>424</a> | rustc_type_ir::TypeFlags::HAS_RE_INFER, |
| <a href=#425 id=425 data-nosnippet>425</a> ) { |
| <a href=#426 id=426 data-nosnippet>426</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(ct); |
| <a href=#427 id=427 data-nosnippet>427</a> } |
| <a href=#428 id=428 data-nosnippet>428</a> |
| <a href=#429 id=429 data-nosnippet>429</a> <span class="attr">#[cfg(debug_assertions)] |
| <a href=#430 id=430 data-nosnippet>430</a> </span><span class="kw">let </span>error = || <span class="prelude-val">Err</span>(()); |
| <a href=#431 id=431 data-nosnippet>431</a> <span class="attr">#[cfg(not(debug_assertions))] |
| <a href=#432 id=432 data-nosnippet>432</a> </span><span class="kw">let </span>error = || <span class="prelude-val">Ok</span>(Const::error(<span class="self">self</span>.interner)); |
| <a href=#433 id=433 data-nosnippet>433</a> |
| <a href=#434 id=434 data-nosnippet>434</a> <span class="kw">match </span>ct.kind() { |
| <a href=#435 id=435 data-nosnippet>435</a> ConstKind::Error(<span class="kw">_</span>) => { |
| <a href=#436 id=436 data-nosnippet>436</a> <span class="kw">let </span>var = rustc_type_ir::BoundVar::from_usize(<span class="self">self</span>.vars.len()); |
| <a href=#437 id=437 data-nosnippet>437</a> <span class="self">self</span>.vars.push(CanonicalVarKind::Const(rustc_type_ir::UniverseIndex::ZERO)); |
| <a href=#438 id=438 data-nosnippet>438</a> <span class="prelude-val">Ok</span>(Const::new_bound(<span class="self">self</span>.interner, <span class="self">self</span>.binder, BoundConst { var })) |
| <a href=#439 id=439 data-nosnippet>439</a> } |
| <a href=#440 id=440 data-nosnippet>440</a> ConstKind::Infer(<span class="kw">_</span>) => error(), |
| <a href=#441 id=441 data-nosnippet>441</a> ConstKind::Bound(BoundVarIndexKind::Bound(index), <span class="kw">_</span>) <span class="kw">if </span>index > <span class="self">self</span>.binder => { |
| <a href=#442 id=442 data-nosnippet>442</a> error() |
| <a href=#443 id=443 data-nosnippet>443</a> } |
| <a href=#444 id=444 data-nosnippet>444</a> <span class="kw">_ </span>=> ct.try_super_fold_with(<span class="self">self</span>), |
| <a href=#445 id=445 data-nosnippet>445</a> } |
| <a href=#446 id=446 data-nosnippet>446</a> } |
| <a href=#447 id=447 data-nosnippet>447</a> |
| <a href=#448 id=448 data-nosnippet>448</a> <span class="kw">fn </span>try_fold_region(<span class="kw-2">&mut </span><span class="self">self</span>, region: Region<<span class="lifetime">'db</span>>) -> <span class="prelude-ty">Result</span><Region<<span class="lifetime">'db</span>>, <span class="self">Self</span>::Error> { |
| <a href=#449 id=449 data-nosnippet>449</a> <span class="attr">#[cfg(debug_assertions)] |
| <a href=#450 id=450 data-nosnippet>450</a> </span><span class="kw">let </span>error = || <span class="prelude-val">Err</span>(()); |
| <a href=#451 id=451 data-nosnippet>451</a> <span class="attr">#[cfg(not(debug_assertions))] |
| <a href=#452 id=452 data-nosnippet>452</a> </span><span class="kw">let </span>error = || <span class="prelude-val">Ok</span>(Region::error(<span class="self">self</span>.interner)); |
| <a href=#453 id=453 data-nosnippet>453</a> |
| <a href=#454 id=454 data-nosnippet>454</a> <span class="kw">match </span>region.kind() { |
| <a href=#455 id=455 data-nosnippet>455</a> RegionKind::ReError(<span class="kw">_</span>) => { |
| <a href=#456 id=456 data-nosnippet>456</a> <span class="kw">let </span>var = rustc_type_ir::BoundVar::from_usize(<span class="self">self</span>.vars.len()); |
| <a href=#457 id=457 data-nosnippet>457</a> <span class="self">self</span>.vars.push(CanonicalVarKind::Region(rustc_type_ir::UniverseIndex::ZERO)); |
| <a href=#458 id=458 data-nosnippet>458</a> <span class="prelude-val">Ok</span>(Region::new_bound( |
| <a href=#459 id=459 data-nosnippet>459</a> <span class="self">self</span>.interner, |
| <a href=#460 id=460 data-nosnippet>460</a> <span class="self">self</span>.binder, |
| <a href=#461 id=461 data-nosnippet>461</a> BoundRegion { var, kind: BoundRegionKind::Anon }, |
| <a href=#462 id=462 data-nosnippet>462</a> )) |
| <a href=#463 id=463 data-nosnippet>463</a> } |
| <a href=#464 id=464 data-nosnippet>464</a> RegionKind::ReVar(<span class="kw">_</span>) => error(), |
| <a href=#465 id=465 data-nosnippet>465</a> RegionKind::ReBound(BoundVarIndexKind::Bound(index), <span class="kw">_</span>) <span class="kw">if </span>index > <span class="self">self</span>.binder => { |
| <a href=#466 id=466 data-nosnippet>466</a> error() |
| <a href=#467 id=467 data-nosnippet>467</a> } |
| <a href=#468 id=468 data-nosnippet>468</a> <span class="kw">_ </span>=> <span class="prelude-val">Ok</span>(region), |
| <a href=#469 id=469 data-nosnippet>469</a> } |
| <a href=#470 id=470 data-nosnippet>470</a> } |
| <a href=#471 id=471 data-nosnippet>471</a> } |
| <a href=#472 id=472 data-nosnippet>472</a> |
| <a href=#473 id=473 data-nosnippet>473</a> <span class="kw">let </span><span class="kw-2">mut </span>error_replacer = |
| <a href=#474 id=474 data-nosnippet>474</a> ErrorReplacer { vars: Vec::new(), binder: rustc_type_ir::DebruijnIndex::ZERO, interner }; |
| <a href=#475 id=475 data-nosnippet>475</a> <span class="kw">let </span>value = <span class="kw">match </span>t.clone().try_fold_with(<span class="kw-2">&mut </span>error_replacer) { |
| <a href=#476 id=476 data-nosnippet>476</a> <span class="prelude-val">Ok</span>(t) => t, |
| <a href=#477 id=477 data-nosnippet>477</a> <span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="macro">panic!</span>(<span class="string">"Encountered unbound or inference vars in {t:?}"</span>), |
| <a href=#478 id=478 data-nosnippet>478</a> }; |
| <a href=#479 id=479 data-nosnippet>479</a> Canonical { |
| <a href=#480 id=480 data-nosnippet>480</a> value, |
| <a href=#481 id=481 data-nosnippet>481</a> max_universe: rustc_type_ir::UniverseIndex::ZERO, |
| <a href=#482 id=482 data-nosnippet>482</a> variables: CanonicalVars::new_from_slice(<span class="kw-2">&</span>error_replacer.vars), |
| <a href=#483 id=483 data-nosnippet>483</a> } |
| <a href=#484 id=484 data-nosnippet>484</a>} |
| <a href=#485 id=485 data-nosnippet>485</a> |
| <a href=#486 id=486 data-nosnippet>486</a><span class="doccomment">/// To be used from `hir` only. |
| <a href=#487 id=487 data-nosnippet>487</a></span><span class="kw">pub fn </span>associated_type_shorthand_candidates( |
| <a href=#488 id=488 data-nosnippet>488</a> db: <span class="kw-2">&</span><span class="kw">dyn </span>HirDatabase, |
| <a href=#489 id=489 data-nosnippet>489</a> def: GenericDefId, |
| <a href=#490 id=490 data-nosnippet>490</a> res: TypeNs, |
| <a href=#491 id=491 data-nosnippet>491</a> <span class="kw-2">mut </span>cb: <span class="kw">impl </span>FnMut(<span class="kw-2">&</span>Name, TypeAliasId) -> bool, |
| <a href=#492 id=492 data-nosnippet>492</a>) -> <span class="prelude-ty">Option</span><TypeAliasId> { |
| <a href=#493 id=493 data-nosnippet>493</a> <span class="kw">let </span>interner = DbInterner::new_no_crate(db); |
| <a href=#494 id=494 data-nosnippet>494</a> <span class="kw">let </span>(def, param) = <span class="kw">match </span>res { |
| <a href=#495 id=495 data-nosnippet>495</a> TypeNs::GenericParam(param) => (def, param), |
| <a href=#496 id=496 data-nosnippet>496</a> TypeNs::SelfType(impl_) => { |
| <a href=#497 id=497 data-nosnippet>497</a> <span class="kw">let </span>impl_trait = db.impl_trait(impl_)<span class="question-mark">?</span>.skip_binder().def_id.<span class="number">0</span>; |
| <a href=#498 id=498 data-nosnippet>498</a> <span class="kw">let </span>param = TypeParamId::from_unchecked(TypeOrConstParamId { |
| <a href=#499 id=499 data-nosnippet>499</a> parent: impl_trait.into(), |
| <a href=#500 id=500 data-nosnippet>500</a> local_id: GenericParams::SELF_PARAM_ID_IN_SELF, |
| <a href=#501 id=501 data-nosnippet>501</a> }); |
| <a href=#502 id=502 data-nosnippet>502</a> (impl_trait.into(), param) |
| <a href=#503 id=503 data-nosnippet>503</a> } |
| <a href=#504 id=504 data-nosnippet>504</a> <span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">None</span>, |
| <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> <span class="kw">let </span><span class="kw-2">mut </span>dedup_map = FxHashSet::default(); |
| <a href=#508 id=508 data-nosnippet>508</a> <span class="kw">let </span>param_ty = Ty::new_param(interner, param, param_idx(db, param.into()).unwrap() <span class="kw">as </span>u32); |
| <a href=#509 id=509 data-nosnippet>509</a> <span class="comment">// We use the ParamEnv and not the predicates because the ParamEnv elaborates bounds. |
| <a href=#510 id=510 data-nosnippet>510</a> </span><span class="kw">let </span>param_env = db.trait_environment(def); |
| <a href=#511 id=511 data-nosnippet>511</a> <span class="kw">for </span>clause <span class="kw">in </span>param_env.clauses { |
| <a href=#512 id=512 data-nosnippet>512</a> <span class="kw">let </span>ClauseKind::Trait(trait_clause) = clause.kind().skip_binder() <span class="kw">else </span>{ <span class="kw">continue </span>}; |
| <a href=#513 id=513 data-nosnippet>513</a> <span class="kw">if </span>trait_clause.self_ty() != param_ty { |
| <a href=#514 id=514 data-nosnippet>514</a> <span class="kw">continue</span>; |
| <a href=#515 id=515 data-nosnippet>515</a> } |
| <a href=#516 id=516 data-nosnippet>516</a> <span class="kw">let </span>trait_id = trait_clause.def_id().<span class="number">0</span>; |
| <a href=#517 id=517 data-nosnippet>517</a> dedup_map.extend( |
| <a href=#518 id=518 data-nosnippet>518</a> SupertraitsInfo::query(db, trait_id) |
| <a href=#519 id=519 data-nosnippet>519</a> .defined_assoc_types |
| <a href=#520 id=520 data-nosnippet>520</a> .iter() |
| <a href=#521 id=521 data-nosnippet>521</a> .map(|(name, id)| (name, <span class="kw-2">*</span>id)), |
| <a href=#522 id=522 data-nosnippet>522</a> ); |
| <a href=#523 id=523 data-nosnippet>523</a> } |
| <a href=#524 id=524 data-nosnippet>524</a> |
| <a href=#525 id=525 data-nosnippet>525</a> dedup_map |
| <a href=#526 id=526 data-nosnippet>526</a> .into_iter() |
| <a href=#527 id=527 data-nosnippet>527</a> .try_for_each( |
| <a href=#528 id=528 data-nosnippet>528</a> |(name, id)| { |
| <a href=#529 id=529 data-nosnippet>529</a> <span class="kw">if </span>cb(name, id) { ControlFlow::Break(id) } <span class="kw">else </span>{ ControlFlow::Continue(()) } |
| <a href=#530 id=530 data-nosnippet>530</a> }, |
| <a href=#531 id=531 data-nosnippet>531</a> ) |
| <a href=#532 id=532 data-nosnippet>532</a> .break_value() |
| <a href=#533 id=533 data-nosnippet>533</a>} |
| <a href=#534 id=534 data-nosnippet>534</a> |
| <a href=#535 id=535 data-nosnippet>535</a><span class="doccomment">/// To be used from `hir` only. |
| <a href=#536 id=536 data-nosnippet>536</a></span><span class="kw">pub fn </span>callable_sig_from_fn_trait<<span class="lifetime">'db</span>>( |
| <a href=#537 id=537 data-nosnippet>537</a> self_ty: Ty<<span class="lifetime">'db</span>>, |
| <a href=#538 id=538 data-nosnippet>538</a> trait_env: ParamEnvAndCrate<<span class="lifetime">'db</span>>, |
| <a href=#539 id=539 data-nosnippet>539</a> db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>HirDatabase, |
| <a href=#540 id=540 data-nosnippet>540</a>) -> <span class="prelude-ty">Option</span><(FnTrait, PolyFnSig<<span class="lifetime">'db</span>>)> { |
| <a href=#541 id=541 data-nosnippet>541</a> <span class="kw">let </span><span class="kw-2">mut </span>table = InferenceTable::new(db, trait_env.param_env, trait_env.krate, <span class="prelude-val">None</span>); |
| <a href=#542 id=542 data-nosnippet>542</a> <span class="kw">let </span>lang_items = table.interner().lang_items(); |
| <a href=#543 id=543 data-nosnippet>543</a> |
| <a href=#544 id=544 data-nosnippet>544</a> <span class="kw">let </span>fn_once_trait = FnTrait::FnOnce.get_id(lang_items)<span class="question-mark">?</span>; |
| <a href=#545 id=545 data-nosnippet>545</a> <span class="kw">let </span>output_assoc_type = fn_once_trait |
| <a href=#546 id=546 data-nosnippet>546</a> .trait_items(db) |
| <a href=#547 id=547 data-nosnippet>547</a> .associated_type_by_name(<span class="kw-2">&</span>Name::new_symbol_root(sym::Output))<span class="question-mark">?</span>; |
| <a href=#548 id=548 data-nosnippet>548</a> |
| <a href=#549 id=549 data-nosnippet>549</a> <span class="comment">// Register two obligations: |
| <a href=#550 id=550 data-nosnippet>550</a> // - Self: FnOnce<?args_ty> |
| <a href=#551 id=551 data-nosnippet>551</a> // - <Self as FnOnce<?args_ty>>::Output == ?ret_ty |
| <a href=#552 id=552 data-nosnippet>552</a> </span><span class="kw">let </span>args_ty = table.next_ty_var(); |
| <a href=#553 id=553 data-nosnippet>553</a> <span class="kw">let </span>args = GenericArgs::new_from_slice(<span class="kw-2">&</span>[self_ty.into(), args_ty.into()]); |
| <a href=#554 id=554 data-nosnippet>554</a> <span class="kw">let </span>trait_ref = TraitRef::new_from_args(table.interner(), fn_once_trait.into(), args); |
| <a href=#555 id=555 data-nosnippet>555</a> <span class="kw">let </span>projection = Ty::new_alias( |
| <a href=#556 id=556 data-nosnippet>556</a> table.interner(), |
| <a href=#557 id=557 data-nosnippet>557</a> rustc_type_ir::AliasTyKind::Projection, |
| <a href=#558 id=558 data-nosnippet>558</a> AliasTy::new_from_args(table.interner(), output_assoc_type.into(), args), |
| <a href=#559 id=559 data-nosnippet>559</a> ); |
| <a href=#560 id=560 data-nosnippet>560</a> |
| <a href=#561 id=561 data-nosnippet>561</a> <span class="kw">let </span>pred = Predicate::upcast_from(trait_ref, table.interner()); |
| <a href=#562 id=562 data-nosnippet>562</a> <span class="kw">if </span>!table.try_obligation(pred).no_solution() { |
| <a href=#563 id=563 data-nosnippet>563</a> table.register_obligation(pred); |
| <a href=#564 id=564 data-nosnippet>564</a> <span class="kw">let </span>return_ty = table.normalize_alias_ty(projection); |
| <a href=#565 id=565 data-nosnippet>565</a> <span class="kw">for </span>fn_x <span class="kw">in </span>[FnTrait::Fn, FnTrait::FnMut, FnTrait::FnOnce] { |
| <a href=#566 id=566 data-nosnippet>566</a> <span class="kw">let </span>fn_x_trait = fn_x.get_id(lang_items)<span class="question-mark">?</span>; |
| <a href=#567 id=567 data-nosnippet>567</a> <span class="kw">let </span>trait_ref = TraitRef::new_from_args(table.interner(), fn_x_trait.into(), args); |
| <a href=#568 id=568 data-nosnippet>568</a> <span class="kw">if </span>!table |
| <a href=#569 id=569 data-nosnippet>569</a> .try_obligation(Predicate::upcast_from(trait_ref, table.interner())) |
| <a href=#570 id=570 data-nosnippet>570</a> .no_solution() |
| <a href=#571 id=571 data-nosnippet>571</a> { |
| <a href=#572 id=572 data-nosnippet>572</a> <span class="kw">let </span>ret_ty = table.resolve_completely(return_ty); |
| <a href=#573 id=573 data-nosnippet>573</a> <span class="kw">let </span>args_ty = table.resolve_completely(args_ty); |
| <a href=#574 id=574 data-nosnippet>574</a> <span class="kw">let </span>TyKind::Tuple(params) = args_ty.kind() <span class="kw">else </span>{ |
| <a href=#575 id=575 data-nosnippet>575</a> <span class="kw">return </span><span class="prelude-val">None</span>; |
| <a href=#576 id=576 data-nosnippet>576</a> }; |
| <a href=#577 id=577 data-nosnippet>577</a> <span class="kw">let </span>inputs_and_output = Tys::new_from_iter( |
| <a href=#578 id=578 data-nosnippet>578</a> table.interner(), |
| <a href=#579 id=579 data-nosnippet>579</a> params.iter().chain(std::iter::once(ret_ty)), |
| <a href=#580 id=580 data-nosnippet>580</a> ); |
| <a href=#581 id=581 data-nosnippet>581</a> |
| <a href=#582 id=582 data-nosnippet>582</a> <span class="kw">return </span><span class="prelude-val">Some</span>(( |
| <a href=#583 id=583 data-nosnippet>583</a> fn_x, |
| <a href=#584 id=584 data-nosnippet>584</a> Binder::dummy(FnSig { |
| <a href=#585 id=585 data-nosnippet>585</a> inputs_and_output, |
| <a href=#586 id=586 data-nosnippet>586</a> c_variadic: <span class="bool-val">false</span>, |
| <a href=#587 id=587 data-nosnippet>587</a> safety: abi::Safety::Safe, |
| <a href=#588 id=588 data-nosnippet>588</a> abi: FnAbi::RustCall, |
| <a href=#589 id=589 data-nosnippet>589</a> }), |
| <a href=#590 id=590 data-nosnippet>590</a> )); |
| <a href=#591 id=591 data-nosnippet>591</a> } |
| <a href=#592 id=592 data-nosnippet>592</a> } |
| <a href=#593 id=593 data-nosnippet>593</a> <span class="macro">unreachable!</span>(<span class="string">"It should at least implement FnOnce at this point"</span>); |
| <a href=#594 id=594 data-nosnippet>594</a> } <span class="kw">else </span>{ |
| <a href=#595 id=595 data-nosnippet>595</a> <span class="prelude-val">None |
| <a href=#596 id=596 data-nosnippet>596</a> </span>} |
| <a href=#597 id=597 data-nosnippet>597</a>} |
| <a href=#598 id=598 data-nosnippet>598</a> |
| <a href=#599 id=599 data-nosnippet>599</a><span class="kw">struct </span>ParamCollector { |
| <a href=#600 id=600 data-nosnippet>600</a> params: FxHashSet<TypeOrConstParamId>, |
| <a href=#601 id=601 data-nosnippet>601</a>} |
| <a href=#602 id=602 data-nosnippet>602</a> |
| <a href=#603 id=603 data-nosnippet>603</a><span class="kw">impl</span><<span class="lifetime">'db</span>> rustc_type_ir::TypeVisitor<DbInterner<<span class="lifetime">'db</span>>> <span class="kw">for </span>ParamCollector { |
| <a href=#604 id=604 data-nosnippet>604</a> <span class="kw">type </span><span class="prelude-ty">Result </span>= (); |
| <a href=#605 id=605 data-nosnippet>605</a> |
| <a href=#606 id=606 data-nosnippet>606</a> <span class="kw">fn </span>visit_ty(<span class="kw-2">&mut </span><span class="self">self</span>, ty: Ty<<span class="lifetime">'db</span>>) -> <span class="self">Self</span>::Result { |
| <a href=#607 id=607 data-nosnippet>607</a> <span class="kw">if let </span>TyKind::Param(param) = ty.kind() { |
| <a href=#608 id=608 data-nosnippet>608</a> <span class="self">self</span>.params.insert(param.id.into()); |
| <a href=#609 id=609 data-nosnippet>609</a> } |
| <a href=#610 id=610 data-nosnippet>610</a> |
| <a href=#611 id=611 data-nosnippet>611</a> ty.super_visit_with(<span class="self">self</span>); |
| <a href=#612 id=612 data-nosnippet>612</a> } |
| <a href=#613 id=613 data-nosnippet>613</a> |
| <a href=#614 id=614 data-nosnippet>614</a> <span class="kw">fn </span>visit_const(<span class="kw-2">&mut </span><span class="self">self</span>, konst: Const<<span class="lifetime">'db</span>>) -> <span class="self">Self</span>::Result { |
| <a href=#615 id=615 data-nosnippet>615</a> <span class="kw">if let </span>ConstKind::Param(param) = konst.kind() { |
| <a href=#616 id=616 data-nosnippet>616</a> <span class="self">self</span>.params.insert(param.id.into()); |
| <a href=#617 id=617 data-nosnippet>617</a> } |
| <a href=#618 id=618 data-nosnippet>618</a> |
| <a href=#619 id=619 data-nosnippet>619</a> konst.super_visit_with(<span class="self">self</span>); |
| <a href=#620 id=620 data-nosnippet>620</a> } |
| <a href=#621 id=621 data-nosnippet>621</a>} |
| <a href=#622 id=622 data-nosnippet>622</a> |
| <a href=#623 id=623 data-nosnippet>623</a><span class="doccomment">/// Returns unique params for types and consts contained in `value`. |
| <a href=#624 id=624 data-nosnippet>624</a></span><span class="kw">pub fn </span>collect_params<<span class="lifetime">'db</span>, T>(value: <span class="kw-2">&</span>T) -> Vec<TypeOrConstParamId> |
| <a href=#625 id=625 data-nosnippet>625</a><span class="kw">where |
| <a href=#626 id=626 data-nosnippet>626</a> </span>T: <span class="question-mark">?</span>Sized + rustc_type_ir::TypeVisitable<DbInterner<<span class="lifetime">'db</span>>>, |
| <a href=#627 id=627 data-nosnippet>627</a>{ |
| <a href=#628 id=628 data-nosnippet>628</a> <span class="kw">let </span><span class="kw-2">mut </span>collector = ParamCollector { params: FxHashSet::default() }; |
| <a href=#629 id=629 data-nosnippet>629</a> value.visit_with(<span class="kw-2">&mut </span>collector); |
| <a href=#630 id=630 data-nosnippet>630</a> Vec::from_iter(collector.params) |
| <a href=#631 id=631 data-nosnippet>631</a>} |
| <a href=#632 id=632 data-nosnippet>632</a> |
| <a href=#633 id=633 data-nosnippet>633</a><span class="kw">struct </span>TypeInferenceVarCollector<<span class="lifetime">'db</span>> { |
| <a href=#634 id=634 data-nosnippet>634</a> type_inference_vars: Vec<Ty<<span class="lifetime">'db</span>>>, |
| <a href=#635 id=635 data-nosnippet>635</a>} |
| <a href=#636 id=636 data-nosnippet>636</a> |
| <a href=#637 id=637 data-nosnippet>637</a><span class="kw">impl</span><<span class="lifetime">'db</span>> rustc_type_ir::TypeVisitor<DbInterner<<span class="lifetime">'db</span>>> <span class="kw">for </span>TypeInferenceVarCollector<<span class="lifetime">'db</span>> { |
| <a href=#638 id=638 data-nosnippet>638</a> <span class="kw">type </span><span class="prelude-ty">Result </span>= (); |
| <a href=#639 id=639 data-nosnippet>639</a> |
| <a href=#640 id=640 data-nosnippet>640</a> <span class="kw">fn </span>visit_ty(<span class="kw-2">&mut </span><span class="self">self</span>, ty: Ty<<span class="lifetime">'db</span>>) -> <span class="self">Self</span>::Result { |
| <a href=#641 id=641 data-nosnippet>641</a> <span class="kw">use </span><span class="kw">crate</span>::rustc_type_ir::Flags; |
| <a href=#642 id=642 data-nosnippet>642</a> <span class="kw">if </span>ty.is_ty_var() { |
| <a href=#643 id=643 data-nosnippet>643</a> <span class="self">self</span>.type_inference_vars.push(ty); |
| <a href=#644 id=644 data-nosnippet>644</a> } <span class="kw">else if </span>ty.flags().intersects(rustc_type_ir::TypeFlags::HAS_TY_INFER) { |
| <a href=#645 id=645 data-nosnippet>645</a> ty.super_visit_with(<span class="self">self</span>); |
| <a href=#646 id=646 data-nosnippet>646</a> } <span class="kw">else </span>{ |
| <a href=#647 id=647 data-nosnippet>647</a> <span class="comment">// Fast path: don't visit inner types (e.g. generic arguments) when `flags` indicate |
| <a href=#648 id=648 data-nosnippet>648</a> // that there are no placeholders. |
| <a href=#649 id=649 data-nosnippet>649</a> </span>} |
| <a href=#650 id=650 data-nosnippet>650</a> } |
| <a href=#651 id=651 data-nosnippet>651</a>} |
| <a href=#652 id=652 data-nosnippet>652</a> |
| <a href=#653 id=653 data-nosnippet>653</a><span class="kw">pub fn </span>collect_type_inference_vars<<span class="lifetime">'db</span>, T>(value: <span class="kw-2">&</span>T) -> Vec<Ty<<span class="lifetime">'db</span>>> |
| <a href=#654 id=654 data-nosnippet>654</a><span class="kw">where |
| <a href=#655 id=655 data-nosnippet>655</a> </span>T: <span class="question-mark">?</span>Sized + rustc_type_ir::TypeVisitable<DbInterner<<span class="lifetime">'db</span>>>, |
| <a href=#656 id=656 data-nosnippet>656</a>{ |
| <a href=#657 id=657 data-nosnippet>657</a> <span class="kw">let </span><span class="kw-2">mut </span>collector = TypeInferenceVarCollector { type_inference_vars: <span class="macro">vec!</span>[] }; |
| <a href=#658 id=658 data-nosnippet>658</a> value.visit_with(<span class="kw-2">&mut </span>collector); |
| <a href=#659 id=659 data-nosnippet>659</a> collector.type_inference_vars |
| <a href=#660 id=660 data-nosnippet>660</a>} |
| <a href=#661 id=661 data-nosnippet>661</a> |
| <a href=#662 id=662 data-nosnippet>662</a><span class="kw">pub fn </span>known_const_to_ast<<span class="lifetime">'db</span>>( |
| <a href=#663 id=663 data-nosnippet>663</a> konst: Const<<span class="lifetime">'db</span>>, |
| <a href=#664 id=664 data-nosnippet>664</a> db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>HirDatabase, |
| <a href=#665 id=665 data-nosnippet>665</a> display_target: DisplayTarget, |
| <a href=#666 id=666 data-nosnippet>666</a>) -> <span class="prelude-ty">Option</span><ConstArg> { |
| <a href=#667 id=667 data-nosnippet>667</a> <span class="prelude-val">Some</span>(make::expr_const_value(konst.display(db, display_target).to_string().as_str())) |
| <a href=#668 id=668 data-nosnippet>668</a>} |
| <a href=#669 id=669 data-nosnippet>669</a> |
| <a href=#670 id=670 data-nosnippet>670</a><span class="attr">#[derive(Debug, Copy, Clone)] |
| <a href=#671 id=671 data-nosnippet>671</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">enum </span>DeclOrigin { |
| <a href=#672 id=672 data-nosnippet>672</a> LetExpr, |
| <a href=#673 id=673 data-nosnippet>673</a> <span class="doccomment">/// from `let x = ..` |
| <a href=#674 id=674 data-nosnippet>674</a> </span>LocalDecl { |
| <a href=#675 id=675 data-nosnippet>675</a> has_else: bool, |
| <a href=#676 id=676 data-nosnippet>676</a> }, |
| <a href=#677 id=677 data-nosnippet>677</a>} |
| <a href=#678 id=678 data-nosnippet>678</a> |
| <a href=#679 id=679 data-nosnippet>679</a><span class="doccomment">/// Provides context for checking patterns in declarations. More specifically this |
| <a href=#680 id=680 data-nosnippet>680</a>/// allows us to infer array types if the pattern is irrefutable and allows us to infer |
| <a href=#681 id=681 data-nosnippet>681</a>/// the size of the array. See issue rust-lang/rust#76342. |
| <a href=#682 id=682 data-nosnippet>682</a></span><span class="attr">#[derive(Debug, Copy, Clone)] |
| <a href=#683 id=683 data-nosnippet>683</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>DeclContext { |
| <a href=#684 id=684 data-nosnippet>684</a> <span class="kw">pub</span>(<span class="kw">crate</span>) origin: DeclOrigin, |
| <a href=#685 id=685 data-nosnippet>685</a>} |
| <a href=#686 id=686 data-nosnippet>686</a> |
| <a href=#687 id=687 data-nosnippet>687</a><span class="kw">pub fn </span>setup_tracing() -> <span class="prelude-ty">Option</span><tracing::subscriber::DefaultGuard> { |
| <a href=#688 id=688 data-nosnippet>688</a> <span class="kw">use </span>std::env; |
| <a href=#689 id=689 data-nosnippet>689</a> <span class="kw">use </span>std::sync::LazyLock; |
| <a href=#690 id=690 data-nosnippet>690</a> <span class="kw">use </span>tracing_subscriber::{Registry, layer::SubscriberExt}; |
| <a href=#691 id=691 data-nosnippet>691</a> <span class="kw">use </span>tracing_tree::HierarchicalLayer; |
| <a href=#692 id=692 data-nosnippet>692</a> |
| <a href=#693 id=693 data-nosnippet>693</a> <span class="kw">static </span>ENABLE: LazyLock<bool> = LazyLock::new(|| env::var(<span class="string">"CHALK_DEBUG"</span>).is_ok()); |
| <a href=#694 id=694 data-nosnippet>694</a> <span class="kw">if </span>!<span class="kw-2">*</span>ENABLE { |
| <a href=#695 id=695 data-nosnippet>695</a> <span class="kw">return </span><span class="prelude-val">None</span>; |
| <a href=#696 id=696 data-nosnippet>696</a> } |
| <a href=#697 id=697 data-nosnippet>697</a> |
| <a href=#698 id=698 data-nosnippet>698</a> <span class="kw">let </span>filter: tracing_subscriber::filter::Targets = |
| <a href=#699 id=699 data-nosnippet>699</a> env::var(<span class="string">"CHALK_DEBUG"</span>).ok().and_then(|it| it.parse().ok()).unwrap_or_default(); |
| <a href=#700 id=700 data-nosnippet>700</a> <span class="kw">let </span>layer = HierarchicalLayer::default() |
| <a href=#701 id=701 data-nosnippet>701</a> .with_indent_lines(<span class="bool-val">true</span>) |
| <a href=#702 id=702 data-nosnippet>702</a> .with_ansi(<span class="bool-val">false</span>) |
| <a href=#703 id=703 data-nosnippet>703</a> .with_indent_amount(<span class="number">2</span>) |
| <a href=#704 id=704 data-nosnippet>704</a> .with_writer(std::io::stderr); |
| <a href=#705 id=705 data-nosnippet>705</a> <span class="kw">let </span>subscriber = Registry::default().with(filter).with(layer); |
| <a href=#706 id=706 data-nosnippet>706</a> <span class="prelude-val">Some</span>(tracing::subscriber::set_default(subscriber)) |
| <a href=#707 id=707 data-nosnippet>707</a>} |
| </code></pre></div></section></main></body></html> |
