| <!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/consteval.rs`."><title>consteval.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>consteval.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">//! Constant evaluation details |
| <a href=#2 id=2 data-nosnippet>2</a> |
| <a href=#3 id=3 data-nosnippet>3</a></span><span class="attr">#[cfg(test)] |
| <a href=#4 id=4 data-nosnippet>4</a></span><span class="kw">mod </span>tests; |
| <a href=#5 id=5 data-nosnippet>5</a> |
| <a href=#6 id=6 data-nosnippet>6</a><span class="kw">use </span>base_db::Crate; |
| <a href=#7 id=7 data-nosnippet>7</a><span class="kw">use </span>hir_def::{ |
| <a href=#8 id=8 data-nosnippet>8</a> ConstId, EnumVariantId, GeneralConstId, HasModule, StaticId, |
| <a href=#9 id=9 data-nosnippet>9</a> attrs::AttrFlags, |
| <a href=#10 id=10 data-nosnippet>10</a> builtin_type::{BuiltinInt, BuiltinType, BuiltinUint}, |
| <a href=#11 id=11 data-nosnippet>11</a> expr_store::Body, |
| <a href=#12 id=12 data-nosnippet>12</a> hir::{Expr, ExprId, Literal}, |
| <a href=#13 id=13 data-nosnippet>13</a>}; |
| <a href=#14 id=14 data-nosnippet>14</a><span class="kw">use </span>hir_expand::Lookup; |
| <a href=#15 id=15 data-nosnippet>15</a><span class="kw">use </span>rustc_type_ir::inherent::IntoKind; |
| <a href=#16 id=16 data-nosnippet>16</a><span class="kw">use </span>triomphe::Arc; |
| <a href=#17 id=17 data-nosnippet>17</a> |
| <a href=#18 id=18 data-nosnippet>18</a><span class="kw">use </span>crate::{ |
| <a href=#19 id=19 data-nosnippet>19</a> LifetimeElisionKind, MemoryMap, ParamEnvAndCrate, TyLoweringContext, |
| <a href=#20 id=20 data-nosnippet>20</a> db::HirDatabase, |
| <a href=#21 id=21 data-nosnippet>21</a> display::DisplayTarget, |
| <a href=#22 id=22 data-nosnippet>22</a> infer::InferenceContext, |
| <a href=#23 id=23 data-nosnippet>23</a> mir::{MirEvalError, MirLowerError}, |
| <a href=#24 id=24 data-nosnippet>24</a> next_solver::{ |
| <a href=#25 id=25 data-nosnippet>25</a> Const, ConstBytes, ConstKind, DbInterner, ErrorGuaranteed, GenericArg, GenericArgs, |
| <a href=#26 id=26 data-nosnippet>26</a> StoredConst, StoredGenericArgs, Ty, ValueConst, |
| <a href=#27 id=27 data-nosnippet>27</a> }, |
| <a href=#28 id=28 data-nosnippet>28</a> traits::StoredParamEnvAndCrate, |
| <a href=#29 id=29 data-nosnippet>29</a>}; |
| <a href=#30 id=30 data-nosnippet>30</a> |
| <a href=#31 id=31 data-nosnippet>31</a><span class="kw">use </span><span class="kw">super</span>::mir::{interpret_mir, lower_to_mir, pad16}; |
| <a href=#32 id=32 data-nosnippet>32</a> |
| <a href=#33 id=33 data-nosnippet>33</a><span class="kw">pub fn </span>unknown_const<<span class="lifetime">'db</span>>(_ty: Ty<<span class="lifetime">'db</span>>) -> Const<<span class="lifetime">'db</span>> { |
| <a href=#34 id=34 data-nosnippet>34</a> Const::new(DbInterner::conjure(), rustc_type_ir::ConstKind::Error(ErrorGuaranteed)) |
| <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">pub fn </span>unknown_const_as_generic<<span class="lifetime">'db</span>>(ty: Ty<<span class="lifetime">'db</span>>) -> GenericArg<<span class="lifetime">'db</span>> { |
| <a href=#38 id=38 data-nosnippet>38</a> unknown_const(ty).into() |
| <a href=#39 id=39 data-nosnippet>39</a>} |
| <a href=#40 id=40 data-nosnippet>40</a> |
| <a href=#41 id=41 data-nosnippet>41</a><span class="attr">#[derive(Debug, Clone, PartialEq, Eq)] |
| <a href=#42 id=42 data-nosnippet>42</a></span><span class="kw">pub enum </span>ConstEvalError { |
| <a href=#43 id=43 data-nosnippet>43</a> MirLowerError(MirLowerError), |
| <a href=#44 id=44 data-nosnippet>44</a> MirEvalError(MirEvalError), |
| <a href=#45 id=45 data-nosnippet>45</a>} |
| <a href=#46 id=46 data-nosnippet>46</a> |
| <a href=#47 id=47 data-nosnippet>47</a><span class="kw">impl </span>ConstEvalError { |
| <a href=#48 id=48 data-nosnippet>48</a> <span class="kw">pub fn </span>pretty_print( |
| <a href=#49 id=49 data-nosnippet>49</a> <span class="kw-2">&</span><span class="self">self</span>, |
| <a href=#50 id=50 data-nosnippet>50</a> f: <span class="kw-2">&mut </span>String, |
| <a href=#51 id=51 data-nosnippet>51</a> db: <span class="kw-2">&</span><span class="kw">dyn </span>HirDatabase, |
| <a href=#52 id=52 data-nosnippet>52</a> span_formatter: <span class="kw">impl </span>Fn(span::FileId, span::TextRange) -> String, |
| <a href=#53 id=53 data-nosnippet>53</a> display_target: DisplayTarget, |
| <a href=#54 id=54 data-nosnippet>54</a> ) -> std::result::Result<(), std::fmt::Error> { |
| <a href=#55 id=55 data-nosnippet>55</a> <span class="kw">match </span><span class="self">self </span>{ |
| <a href=#56 id=56 data-nosnippet>56</a> ConstEvalError::MirLowerError(e) => { |
| <a href=#57 id=57 data-nosnippet>57</a> e.pretty_print(f, db, span_formatter, display_target) |
| <a href=#58 id=58 data-nosnippet>58</a> } |
| <a href=#59 id=59 data-nosnippet>59</a> ConstEvalError::MirEvalError(e) => { |
| <a href=#60 id=60 data-nosnippet>60</a> e.pretty_print(f, db, span_formatter, display_target) |
| <a href=#61 id=61 data-nosnippet>61</a> } |
| <a href=#62 id=62 data-nosnippet>62</a> } |
| <a href=#63 id=63 data-nosnippet>63</a> } |
| <a href=#64 id=64 data-nosnippet>64</a>} |
| <a href=#65 id=65 data-nosnippet>65</a> |
| <a href=#66 id=66 data-nosnippet>66</a><span class="kw">impl </span>From<MirLowerError> <span class="kw">for </span>ConstEvalError { |
| <a href=#67 id=67 data-nosnippet>67</a> <span class="kw">fn </span>from(value: MirLowerError) -> <span class="self">Self </span>{ |
| <a href=#68 id=68 data-nosnippet>68</a> <span class="kw">match </span>value { |
| <a href=#69 id=69 data-nosnippet>69</a> MirLowerError::ConstEvalError(<span class="kw">_</span>, e) => <span class="kw-2">*</span>e, |
| <a href=#70 id=70 data-nosnippet>70</a> <span class="kw">_ </span>=> ConstEvalError::MirLowerError(value), |
| <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>} |
| <a href=#74 id=74 data-nosnippet>74</a> |
| <a href=#75 id=75 data-nosnippet>75</a><span class="kw">impl </span>From<MirEvalError> <span class="kw">for </span>ConstEvalError { |
| <a href=#76 id=76 data-nosnippet>76</a> <span class="kw">fn </span>from(value: MirEvalError) -> <span class="self">Self </span>{ |
| <a href=#77 id=77 data-nosnippet>77</a> ConstEvalError::MirEvalError(value) |
| <a href=#78 id=78 data-nosnippet>78</a> } |
| <a href=#79 id=79 data-nosnippet>79</a>} |
| <a href=#80 id=80 data-nosnippet>80</a> |
| <a href=#81 id=81 data-nosnippet>81</a><span class="doccomment">/// Interns a constant scalar with the given type |
| <a href=#82 id=82 data-nosnippet>82</a></span><span class="kw">pub fn </span>intern_const_ref<<span class="lifetime">'a</span>>( |
| <a href=#83 id=83 data-nosnippet>83</a> db: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw">dyn </span>HirDatabase, |
| <a href=#84 id=84 data-nosnippet>84</a> value: <span class="kw-2">&</span>Literal, |
| <a href=#85 id=85 data-nosnippet>85</a> ty: Ty<<span class="lifetime">'a</span>>, |
| <a href=#86 id=86 data-nosnippet>86</a> _krate: Crate, |
| <a href=#87 id=87 data-nosnippet>87</a>) -> Const<<span class="lifetime">'a</span>> { |
| <a href=#88 id=88 data-nosnippet>88</a> <span class="kw">let </span>interner = DbInterner::new_no_crate(db); |
| <a href=#89 id=89 data-nosnippet>89</a> <span class="kw">let </span>kind = <span class="kw">match </span>value { |
| <a href=#90 id=90 data-nosnippet>90</a> <span class="kw-2">&</span>Literal::Uint(i, builtin_ty) |
| <a href=#91 id=91 data-nosnippet>91</a> <span class="kw">if </span>builtin_ty.is_none() || ty.as_builtin() == builtin_ty.map(BuiltinType::Uint) => |
| <a href=#92 id=92 data-nosnippet>92</a> { |
| <a href=#93 id=93 data-nosnippet>93</a> <span class="kw">let </span>memory = <span class="kw">match </span>ty.as_builtin() { |
| <a href=#94 id=94 data-nosnippet>94</a> <span class="prelude-val">Some</span>(BuiltinType::Uint(builtin_uint)) => <span class="kw">match </span>builtin_uint { |
| <a href=#95 id=95 data-nosnippet>95</a> BuiltinUint::U8 => Box::new([i <span class="kw">as </span>u8]) <span class="kw">as </span>Box<[u8]>, |
| <a href=#96 id=96 data-nosnippet>96</a> BuiltinUint::U16 => Box::new((i <span class="kw">as </span>u16).to_le_bytes()), |
| <a href=#97 id=97 data-nosnippet>97</a> BuiltinUint::U32 => Box::new((i <span class="kw">as </span>u32).to_le_bytes()), |
| <a href=#98 id=98 data-nosnippet>98</a> BuiltinUint::U64 => Box::new((i <span class="kw">as </span>u64).to_le_bytes()), |
| <a href=#99 id=99 data-nosnippet>99</a> BuiltinUint::U128 => Box::new((i).to_le_bytes()), |
| <a href=#100 id=100 data-nosnippet>100</a> BuiltinUint::Usize => Box::new((i <span class="kw">as </span>usize).to_le_bytes()), |
| <a href=#101 id=101 data-nosnippet>101</a> }, |
| <a href=#102 id=102 data-nosnippet>102</a> <span class="kw">_ </span>=> <span class="kw">return </span>Const::new(interner, rustc_type_ir::ConstKind::Error(ErrorGuaranteed)), |
| <a href=#103 id=103 data-nosnippet>103</a> }; |
| <a href=#104 id=104 data-nosnippet>104</a> rustc_type_ir::ConstKind::Value(ValueConst::new( |
| <a href=#105 id=105 data-nosnippet>105</a> ty, |
| <a href=#106 id=106 data-nosnippet>106</a> ConstBytes { memory, memory_map: MemoryMap::default() }, |
| <a href=#107 id=107 data-nosnippet>107</a> )) |
| <a href=#108 id=108 data-nosnippet>108</a> } |
| <a href=#109 id=109 data-nosnippet>109</a> <span class="kw-2">&</span>Literal::Int(i, <span class="prelude-val">None</span>) |
| <a href=#110 id=110 data-nosnippet>110</a> <span class="kw">if </span>ty |
| <a href=#111 id=111 data-nosnippet>111</a> .as_builtin() |
| <a href=#112 id=112 data-nosnippet>112</a> .is_some_and(|builtin_ty| <span class="macro">matches!</span>(builtin_ty, BuiltinType::Uint(<span class="kw">_</span>))) => |
| <a href=#113 id=113 data-nosnippet>113</a> { |
| <a href=#114 id=114 data-nosnippet>114</a> <span class="kw">let </span>memory = <span class="kw">match </span>ty.as_builtin() { |
| <a href=#115 id=115 data-nosnippet>115</a> <span class="prelude-val">Some</span>(BuiltinType::Uint(builtin_uint)) => <span class="kw">match </span>builtin_uint { |
| <a href=#116 id=116 data-nosnippet>116</a> BuiltinUint::U8 => Box::new([i <span class="kw">as </span>u8]) <span class="kw">as </span>Box<[u8]>, |
| <a href=#117 id=117 data-nosnippet>117</a> BuiltinUint::U16 => Box::new((i <span class="kw">as </span>u16).to_le_bytes()), |
| <a href=#118 id=118 data-nosnippet>118</a> BuiltinUint::U32 => Box::new((i <span class="kw">as </span>u32).to_le_bytes()), |
| <a href=#119 id=119 data-nosnippet>119</a> BuiltinUint::U64 => Box::new((i <span class="kw">as </span>u64).to_le_bytes()), |
| <a href=#120 id=120 data-nosnippet>120</a> BuiltinUint::U128 => Box::new((i <span class="kw">as </span>u128).to_le_bytes()), |
| <a href=#121 id=121 data-nosnippet>121</a> BuiltinUint::Usize => Box::new((i <span class="kw">as </span>usize).to_le_bytes()), |
| <a href=#122 id=122 data-nosnippet>122</a> }, |
| <a href=#123 id=123 data-nosnippet>123</a> <span class="kw">_ </span>=> <span class="kw">return </span>Const::new(interner, rustc_type_ir::ConstKind::Error(ErrorGuaranteed)), |
| <a href=#124 id=124 data-nosnippet>124</a> }; |
| <a href=#125 id=125 data-nosnippet>125</a> rustc_type_ir::ConstKind::Value(ValueConst::new( |
| <a href=#126 id=126 data-nosnippet>126</a> ty, |
| <a href=#127 id=127 data-nosnippet>127</a> ConstBytes { memory, memory_map: MemoryMap::default() }, |
| <a href=#128 id=128 data-nosnippet>128</a> )) |
| <a href=#129 id=129 data-nosnippet>129</a> } |
| <a href=#130 id=130 data-nosnippet>130</a> <span class="kw-2">&</span>Literal::Int(i, builtin_ty) |
| <a href=#131 id=131 data-nosnippet>131</a> <span class="kw">if </span>builtin_ty.is_none() || ty.as_builtin() == builtin_ty.map(BuiltinType::Int) => |
| <a href=#132 id=132 data-nosnippet>132</a> { |
| <a href=#133 id=133 data-nosnippet>133</a> <span class="kw">let </span>memory = <span class="kw">match </span>ty.as_builtin() { |
| <a href=#134 id=134 data-nosnippet>134</a> <span class="prelude-val">Some</span>(BuiltinType::Int(builtin_int)) => <span class="kw">match </span>builtin_int { |
| <a href=#135 id=135 data-nosnippet>135</a> BuiltinInt::I8 => Box::new([i <span class="kw">as </span>u8]) <span class="kw">as </span>Box<[u8]>, |
| <a href=#136 id=136 data-nosnippet>136</a> BuiltinInt::I16 => Box::new((i <span class="kw">as </span>i16).to_le_bytes()), |
| <a href=#137 id=137 data-nosnippet>137</a> BuiltinInt::I32 => Box::new((i <span class="kw">as </span>i32).to_le_bytes()), |
| <a href=#138 id=138 data-nosnippet>138</a> BuiltinInt::I64 => Box::new((i <span class="kw">as </span>i64).to_le_bytes()), |
| <a href=#139 id=139 data-nosnippet>139</a> BuiltinInt::I128 => Box::new((i).to_le_bytes()), |
| <a href=#140 id=140 data-nosnippet>140</a> BuiltinInt::Isize => Box::new((i <span class="kw">as </span>isize).to_le_bytes()), |
| <a href=#141 id=141 data-nosnippet>141</a> }, |
| <a href=#142 id=142 data-nosnippet>142</a> <span class="kw">_ </span>=> <span class="kw">return </span>Const::new(interner, rustc_type_ir::ConstKind::Error(ErrorGuaranteed)), |
| <a href=#143 id=143 data-nosnippet>143</a> }; |
| <a href=#144 id=144 data-nosnippet>144</a> rustc_type_ir::ConstKind::Value(ValueConst::new( |
| <a href=#145 id=145 data-nosnippet>145</a> ty, |
| <a href=#146 id=146 data-nosnippet>146</a> ConstBytes { memory, memory_map: MemoryMap::default() }, |
| <a href=#147 id=147 data-nosnippet>147</a> )) |
| <a href=#148 id=148 data-nosnippet>148</a> } |
| <a href=#149 id=149 data-nosnippet>149</a> Literal::Float(float_type_wrapper, builtin_float) |
| <a href=#150 id=150 data-nosnippet>150</a> <span class="kw">if </span>builtin_float.is_none() |
| <a href=#151 id=151 data-nosnippet>151</a> || ty.as_builtin() == builtin_float.map(BuiltinType::Float) => |
| <a href=#152 id=152 data-nosnippet>152</a> { |
| <a href=#153 id=153 data-nosnippet>153</a> <span class="kw">let </span>memory = <span class="kw">match </span>ty.as_builtin().unwrap() { |
| <a href=#154 id=154 data-nosnippet>154</a> BuiltinType::Float(builtin_float) => <span class="kw">match </span>builtin_float { |
| <a href=#155 id=155 data-nosnippet>155</a> <span class="comment">// FIXME: |
| <a href=#156 id=156 data-nosnippet>156</a> </span>hir_def::builtin_type::BuiltinFloat::F16 => Box::new([<span class="number">0u8</span>; <span class="number">2</span>]) <span class="kw">as </span>Box<[u8]>, |
| <a href=#157 id=157 data-nosnippet>157</a> hir_def::builtin_type::BuiltinFloat::F32 => { |
| <a href=#158 id=158 data-nosnippet>158</a> Box::new(float_type_wrapper.to_f32().to_le_bytes()) |
| <a href=#159 id=159 data-nosnippet>159</a> } |
| <a href=#160 id=160 data-nosnippet>160</a> hir_def::builtin_type::BuiltinFloat::F64 => { |
| <a href=#161 id=161 data-nosnippet>161</a> Box::new(float_type_wrapper.to_f64().to_le_bytes()) |
| <a href=#162 id=162 data-nosnippet>162</a> } |
| <a href=#163 id=163 data-nosnippet>163</a> <span class="comment">// FIXME: |
| <a href=#164 id=164 data-nosnippet>164</a> </span>hir_def::builtin_type::BuiltinFloat::F128 => Box::new([<span class="number">0</span>; <span class="number">16</span>]), |
| <a href=#165 id=165 data-nosnippet>165</a> }, |
| <a href=#166 id=166 data-nosnippet>166</a> <span class="kw">_ </span>=> <span class="macro">unreachable!</span>(), |
| <a href=#167 id=167 data-nosnippet>167</a> }; |
| <a href=#168 id=168 data-nosnippet>168</a> rustc_type_ir::ConstKind::Value(ValueConst::new( |
| <a href=#169 id=169 data-nosnippet>169</a> ty, |
| <a href=#170 id=170 data-nosnippet>170</a> ConstBytes { memory, memory_map: MemoryMap::default() }, |
| <a href=#171 id=171 data-nosnippet>171</a> )) |
| <a href=#172 id=172 data-nosnippet>172</a> } |
| <a href=#173 id=173 data-nosnippet>173</a> Literal::Bool(b) <span class="kw">if </span>ty.is_bool() => rustc_type_ir::ConstKind::Value(ValueConst::new( |
| <a href=#174 id=174 data-nosnippet>174</a> ty, |
| <a href=#175 id=175 data-nosnippet>175</a> ConstBytes { memory: Box::new([<span class="kw-2">*</span>b <span class="kw">as </span>u8]), memory_map: MemoryMap::default() }, |
| <a href=#176 id=176 data-nosnippet>176</a> )), |
| <a href=#177 id=177 data-nosnippet>177</a> Literal::Char(c) <span class="kw">if </span>ty.is_char() => rustc_type_ir::ConstKind::Value(ValueConst::new( |
| <a href=#178 id=178 data-nosnippet>178</a> ty, |
| <a href=#179 id=179 data-nosnippet>179</a> ConstBytes { |
| <a href=#180 id=180 data-nosnippet>180</a> memory: (<span class="kw-2">*</span>c <span class="kw">as </span>u32).to_le_bytes().into(), |
| <a href=#181 id=181 data-nosnippet>181</a> memory_map: MemoryMap::default(), |
| <a href=#182 id=182 data-nosnippet>182</a> }, |
| <a href=#183 id=183 data-nosnippet>183</a> )), |
| <a href=#184 id=184 data-nosnippet>184</a> Literal::String(symbol) <span class="kw">if </span>ty.is_str() => rustc_type_ir::ConstKind::Value(ValueConst::new( |
| <a href=#185 id=185 data-nosnippet>185</a> ty, |
| <a href=#186 id=186 data-nosnippet>186</a> ConstBytes { |
| <a href=#187 id=187 data-nosnippet>187</a> memory: symbol.as_str().as_bytes().into(), |
| <a href=#188 id=188 data-nosnippet>188</a> memory_map: MemoryMap::default(), |
| <a href=#189 id=189 data-nosnippet>189</a> }, |
| <a href=#190 id=190 data-nosnippet>190</a> )), |
| <a href=#191 id=191 data-nosnippet>191</a> Literal::ByteString(items) <span class="kw">if </span>ty.as_slice().is_some_and(|ty| ty.is_u8()) => { |
| <a href=#192 id=192 data-nosnippet>192</a> rustc_type_ir::ConstKind::Value(ValueConst::new( |
| <a href=#193 id=193 data-nosnippet>193</a> ty, |
| <a href=#194 id=194 data-nosnippet>194</a> ConstBytes { memory: items.clone(), memory_map: MemoryMap::default() }, |
| <a href=#195 id=195 data-nosnippet>195</a> )) |
| <a href=#196 id=196 data-nosnippet>196</a> } |
| <a href=#197 id=197 data-nosnippet>197</a> <span class="comment">// FIXME |
| <a href=#198 id=198 data-nosnippet>198</a> </span>Literal::CString(_items) => rustc_type_ir::ConstKind::Error(ErrorGuaranteed), |
| <a href=#199 id=199 data-nosnippet>199</a> <span class="kw">_ </span>=> rustc_type_ir::ConstKind::Error(ErrorGuaranteed), |
| <a href=#200 id=200 data-nosnippet>200</a> }; |
| <a href=#201 id=201 data-nosnippet>201</a> Const::new(interner, kind) |
| <a href=#202 id=202 data-nosnippet>202</a>} |
| <a href=#203 id=203 data-nosnippet>203</a> |
| <a href=#204 id=204 data-nosnippet>204</a><span class="doccomment">/// Interns a possibly-unknown target usize |
| <a href=#205 id=205 data-nosnippet>205</a></span><span class="kw">pub fn </span>usize_const<<span class="lifetime">'db</span>>(db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>HirDatabase, value: <span class="prelude-ty">Option</span><u128>, krate: Crate) -> Const<<span class="lifetime">'db</span>> { |
| <a href=#206 id=206 data-nosnippet>206</a> intern_const_ref( |
| <a href=#207 id=207 data-nosnippet>207</a> db, |
| <a href=#208 id=208 data-nosnippet>208</a> <span class="kw-2">&</span><span class="kw">match </span>value { |
| <a href=#209 id=209 data-nosnippet>209</a> <span class="prelude-val">Some</span>(value) => Literal::Uint(value, <span class="prelude-val">Some</span>(BuiltinUint::Usize)), |
| <a href=#210 id=210 data-nosnippet>210</a> <span class="prelude-val">None </span>=> { |
| <a href=#211 id=211 data-nosnippet>211</a> <span class="kw">return </span>Const::new( |
| <a href=#212 id=212 data-nosnippet>212</a> DbInterner::new_no_crate(db), |
| <a href=#213 id=213 data-nosnippet>213</a> rustc_type_ir::ConstKind::Error(ErrorGuaranteed), |
| <a href=#214 id=214 data-nosnippet>214</a> ); |
| <a href=#215 id=215 data-nosnippet>215</a> } |
| <a href=#216 id=216 data-nosnippet>216</a> }, |
| <a href=#217 id=217 data-nosnippet>217</a> Ty::new_uint(DbInterner::new_no_crate(db), rustc_type_ir::UintTy::Usize), |
| <a href=#218 id=218 data-nosnippet>218</a> krate, |
| <a href=#219 id=219 data-nosnippet>219</a> ) |
| <a href=#220 id=220 data-nosnippet>220</a>} |
| <a href=#221 id=221 data-nosnippet>221</a> |
| <a href=#222 id=222 data-nosnippet>222</a><span class="kw">pub fn </span>try_const_usize<<span class="lifetime">'db</span>>(db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>HirDatabase, c: Const<<span class="lifetime">'db</span>>) -> <span class="prelude-ty">Option</span><u128> { |
| <a href=#223 id=223 data-nosnippet>223</a> <span class="kw">match </span>c.kind() { |
| <a href=#224 id=224 data-nosnippet>224</a> ConstKind::Param(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#225 id=225 data-nosnippet>225</a> ConstKind::Infer(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#226 id=226 data-nosnippet>226</a> ConstKind::Bound(<span class="kw">_</span>, <span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#227 id=227 data-nosnippet>227</a> ConstKind::Placeholder(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#228 id=228 data-nosnippet>228</a> ConstKind::Unevaluated(unevaluated_const) => <span class="kw">match </span>unevaluated_const.def.<span class="number">0 </span>{ |
| <a href=#229 id=229 data-nosnippet>229</a> GeneralConstId::ConstId(id) => { |
| <a href=#230 id=230 data-nosnippet>230</a> <span class="kw">let </span>subst = unevaluated_const.args; |
| <a href=#231 id=231 data-nosnippet>231</a> <span class="kw">let </span>ec = db.const_eval(id, subst, <span class="prelude-val">None</span>).ok()<span class="question-mark">?</span>; |
| <a href=#232 id=232 data-nosnippet>232</a> try_const_usize(db, ec) |
| <a href=#233 id=233 data-nosnippet>233</a> } |
| <a href=#234 id=234 data-nosnippet>234</a> GeneralConstId::StaticId(id) => { |
| <a href=#235 id=235 data-nosnippet>235</a> <span class="kw">let </span>ec = db.const_eval_static(id).ok()<span class="question-mark">?</span>; |
| <a href=#236 id=236 data-nosnippet>236</a> try_const_usize(db, ec) |
| <a href=#237 id=237 data-nosnippet>237</a> } |
| <a href=#238 id=238 data-nosnippet>238</a> }, |
| <a href=#239 id=239 data-nosnippet>239</a> ConstKind::Value(val) => <span class="prelude-val">Some</span>(u128::from_le_bytes(pad16(<span class="kw-2">&</span>val.value.inner().memory, <span class="bool-val">false</span>))), |
| <a href=#240 id=240 data-nosnippet>240</a> ConstKind::Error(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#241 id=241 data-nosnippet>241</a> ConstKind::Expr(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#242 id=242 data-nosnippet>242</a> } |
| <a href=#243 id=243 data-nosnippet>243</a>} |
| <a href=#244 id=244 data-nosnippet>244</a> |
| <a href=#245 id=245 data-nosnippet>245</a><span class="kw">pub fn </span>try_const_isize<<span class="lifetime">'db</span>>(db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>HirDatabase, c: <span class="kw-2">&</span>Const<<span class="lifetime">'db</span>>) -> <span class="prelude-ty">Option</span><i128> { |
| <a href=#246 id=246 data-nosnippet>246</a> <span class="kw">match </span>(<span class="kw-2">*</span>c).kind() { |
| <a href=#247 id=247 data-nosnippet>247</a> ConstKind::Param(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#248 id=248 data-nosnippet>248</a> ConstKind::Infer(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#249 id=249 data-nosnippet>249</a> ConstKind::Bound(<span class="kw">_</span>, <span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#250 id=250 data-nosnippet>250</a> ConstKind::Placeholder(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#251 id=251 data-nosnippet>251</a> ConstKind::Unevaluated(unevaluated_const) => <span class="kw">match </span>unevaluated_const.def.<span class="number">0 </span>{ |
| <a href=#252 id=252 data-nosnippet>252</a> GeneralConstId::ConstId(id) => { |
| <a href=#253 id=253 data-nosnippet>253</a> <span class="kw">let </span>subst = unevaluated_const.args; |
| <a href=#254 id=254 data-nosnippet>254</a> <span class="kw">let </span>ec = db.const_eval(id, subst, <span class="prelude-val">None</span>).ok()<span class="question-mark">?</span>; |
| <a href=#255 id=255 data-nosnippet>255</a> try_const_isize(db, <span class="kw-2">&</span>ec) |
| <a href=#256 id=256 data-nosnippet>256</a> } |
| <a href=#257 id=257 data-nosnippet>257</a> GeneralConstId::StaticId(id) => { |
| <a href=#258 id=258 data-nosnippet>258</a> <span class="kw">let </span>ec = db.const_eval_static(id).ok()<span class="question-mark">?</span>; |
| <a href=#259 id=259 data-nosnippet>259</a> try_const_isize(db, <span class="kw-2">&</span>ec) |
| <a href=#260 id=260 data-nosnippet>260</a> } |
| <a href=#261 id=261 data-nosnippet>261</a> }, |
| <a href=#262 id=262 data-nosnippet>262</a> ConstKind::Value(val) => <span class="prelude-val">Some</span>(i128::from_le_bytes(pad16(<span class="kw-2">&</span>val.value.inner().memory, <span class="bool-val">true</span>))), |
| <a href=#263 id=263 data-nosnippet>263</a> ConstKind::Error(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#264 id=264 data-nosnippet>264</a> ConstKind::Expr(<span class="kw">_</span>) => <span class="prelude-val">None</span>, |
| <a href=#265 id=265 data-nosnippet>265</a> } |
| <a href=#266 id=266 data-nosnippet>266</a>} |
| <a href=#267 id=267 data-nosnippet>267</a> |
| <a href=#268 id=268 data-nosnippet>268</a><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>const_eval_discriminant_variant( |
| <a href=#269 id=269 data-nosnippet>269</a> db: <span class="kw-2">&</span><span class="kw">dyn </span>HirDatabase, |
| <a href=#270 id=270 data-nosnippet>270</a> variant_id: EnumVariantId, |
| <a href=#271 id=271 data-nosnippet>271</a>) -> <span class="prelude-ty">Result</span><i128, ConstEvalError> { |
| <a href=#272 id=272 data-nosnippet>272</a> <span class="kw">let </span>interner = DbInterner::new_no_crate(db); |
| <a href=#273 id=273 data-nosnippet>273</a> <span class="kw">let </span>def = variant_id.into(); |
| <a href=#274 id=274 data-nosnippet>274</a> <span class="kw">let </span>body = db.body(def); |
| <a href=#275 id=275 data-nosnippet>275</a> <span class="kw">let </span>loc = variant_id.lookup(db); |
| <a href=#276 id=276 data-nosnippet>276</a> <span class="kw">if </span><span class="macro">matches!</span>(body[body.body_expr], Expr::Missing) { |
| <a href=#277 id=277 data-nosnippet>277</a> <span class="kw">let </span>prev_idx = loc.index.checked_sub(<span class="number">1</span>); |
| <a href=#278 id=278 data-nosnippet>278</a> <span class="kw">let </span>value = <span class="kw">match </span>prev_idx { |
| <a href=#279 id=279 data-nosnippet>279</a> <span class="prelude-val">Some</span>(prev_idx) => { |
| <a href=#280 id=280 data-nosnippet>280</a> <span class="number">1 </span>+ db.const_eval_discriminant( |
| <a href=#281 id=281 data-nosnippet>281</a> loc.parent.enum_variants(db).variants[prev_idx <span class="kw">as </span>usize].<span class="number">0</span>, |
| <a href=#282 id=282 data-nosnippet>282</a> )<span class="question-mark">? |
| <a href=#283 id=283 data-nosnippet>283</a> </span>} |
| <a href=#284 id=284 data-nosnippet>284</a> <span class="kw">_ </span>=> <span class="number">0</span>, |
| <a href=#285 id=285 data-nosnippet>285</a> }; |
| <a href=#286 id=286 data-nosnippet>286</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(value); |
| <a href=#287 id=287 data-nosnippet>287</a> } |
| <a href=#288 id=288 data-nosnippet>288</a> |
| <a href=#289 id=289 data-nosnippet>289</a> <span class="kw">let </span>repr = AttrFlags::repr(db, loc.parent.into()); |
| <a href=#290 id=290 data-nosnippet>290</a> <span class="kw">let </span>is_signed = repr.and_then(|repr| repr.int).is_none_or(|int| int.is_signed()); |
| <a href=#291 id=291 data-nosnippet>291</a> |
| <a href=#292 id=292 data-nosnippet>292</a> <span class="kw">let </span>mir_body = db.monomorphized_mir_body( |
| <a href=#293 id=293 data-nosnippet>293</a> def, |
| <a href=#294 id=294 data-nosnippet>294</a> GenericArgs::empty(interner).store(), |
| <a href=#295 id=295 data-nosnippet>295</a> ParamEnvAndCrate { param_env: db.trait_environment_for_body(def), krate: def.krate(db) } |
| <a href=#296 id=296 data-nosnippet>296</a> .store(), |
| <a href=#297 id=297 data-nosnippet>297</a> )<span class="question-mark">?</span>; |
| <a href=#298 id=298 data-nosnippet>298</a> <span class="kw">let </span>c = interpret_mir(db, mir_body, <span class="bool-val">false</span>, <span class="prelude-val">None</span>)<span class="question-mark">?</span>.<span class="number">0</span><span class="question-mark">?</span>; |
| <a href=#299 id=299 data-nosnippet>299</a> <span class="kw">let </span>c = <span class="kw">if </span>is_signed { |
| <a href=#300 id=300 data-nosnippet>300</a> try_const_isize(db, <span class="kw-2">&</span>c).unwrap() |
| <a href=#301 id=301 data-nosnippet>301</a> } <span class="kw">else </span>{ |
| <a href=#302 id=302 data-nosnippet>302</a> try_const_usize(db, c).unwrap() <span class="kw">as </span>i128 |
| <a href=#303 id=303 data-nosnippet>303</a> }; |
| <a href=#304 id=304 data-nosnippet>304</a> <span class="prelude-val">Ok</span>(c) |
| <a href=#305 id=305 data-nosnippet>305</a>} |
| <a href=#306 id=306 data-nosnippet>306</a> |
| <a href=#307 id=307 data-nosnippet>307</a><span class="comment">// FIXME: Ideally constants in const eval should have separate body (issue #7434), and this function should |
| <a href=#308 id=308 data-nosnippet>308</a>// get an `InferenceResult` instead of an `InferenceContext`. And we should remove `ctx.clone().resolve_all()` here |
| <a href=#309 id=309 data-nosnippet>309</a>// and make this function private. See the fixme comment on `InferenceContext::resolve_all`. |
| <a href=#310 id=310 data-nosnippet>310</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>eval_to_const<<span class="lifetime">'db</span>>(expr: ExprId, ctx: <span class="kw-2">&mut </span>InferenceContext<<span class="lifetime">'_</span>, <span class="lifetime">'db</span>>) -> Const<<span class="lifetime">'db</span>> { |
| <a href=#311 id=311 data-nosnippet>311</a> <span class="kw">let </span>infer = ctx.fixme_resolve_all_clone(); |
| <a href=#312 id=312 data-nosnippet>312</a> <span class="kw">fn </span>has_closure(body: <span class="kw-2">&</span>Body, expr: ExprId) -> bool { |
| <a href=#313 id=313 data-nosnippet>313</a> <span class="kw">if </span><span class="macro">matches!</span>(body[expr], Expr::Closure { .. }) { |
| <a href=#314 id=314 data-nosnippet>314</a> <span class="kw">return </span><span class="bool-val">true</span>; |
| <a href=#315 id=315 data-nosnippet>315</a> } |
| <a href=#316 id=316 data-nosnippet>316</a> <span class="kw">let </span><span class="kw-2">mut </span>r = <span class="bool-val">false</span>; |
| <a href=#317 id=317 data-nosnippet>317</a> body.walk_child_exprs(expr, |idx| r |= has_closure(body, idx)); |
| <a href=#318 id=318 data-nosnippet>318</a> r |
| <a href=#319 id=319 data-nosnippet>319</a> } |
| <a href=#320 id=320 data-nosnippet>320</a> <span class="kw">if </span>has_closure(ctx.body, expr) { |
| <a href=#321 id=321 data-nosnippet>321</a> <span class="comment">// Type checking clousres need an isolated body (See the above FIXME). Bail out early to prevent panic. |
| <a href=#322 id=322 data-nosnippet>322</a> </span><span class="kw">return </span>Const::error(ctx.interner()); |
| <a href=#323 id=323 data-nosnippet>323</a> } |
| <a href=#324 id=324 data-nosnippet>324</a> <span class="kw">if let </span>Expr::Path(p) = <span class="kw-2">&</span>ctx.body[expr] { |
| <a href=#325 id=325 data-nosnippet>325</a> <span class="kw">let </span><span class="kw-2">mut </span>ctx = TyLoweringContext::new( |
| <a href=#326 id=326 data-nosnippet>326</a> ctx.db, |
| <a href=#327 id=327 data-nosnippet>327</a> <span class="kw-2">&</span>ctx.resolver, |
| <a href=#328 id=328 data-nosnippet>328</a> ctx.body, |
| <a href=#329 id=329 data-nosnippet>329</a> ctx.generic_def, |
| <a href=#330 id=330 data-nosnippet>330</a> LifetimeElisionKind::Infer, |
| <a href=#331 id=331 data-nosnippet>331</a> ); |
| <a href=#332 id=332 data-nosnippet>332</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(c) = ctx.path_to_const(p) { |
| <a href=#333 id=333 data-nosnippet>333</a> <span class="kw">return </span>c; |
| <a href=#334 id=334 data-nosnippet>334</a> } |
| <a href=#335 id=335 data-nosnippet>335</a> } |
| <a href=#336 id=336 data-nosnippet>336</a> <span class="kw">if let </span><span class="prelude-val">Ok</span>(mir_body) = lower_to_mir(ctx.db, ctx.owner, ctx.body, <span class="kw-2">&</span>infer, expr) |
| <a href=#337 id=337 data-nosnippet>337</a> && <span class="kw">let </span><span class="prelude-val">Ok</span>((<span class="prelude-val">Ok</span>(result), <span class="kw">_</span>)) = interpret_mir(ctx.db, Arc::new(mir_body), <span class="bool-val">true</span>, <span class="prelude-val">None</span>) |
| <a href=#338 id=338 data-nosnippet>338</a> { |
| <a href=#339 id=339 data-nosnippet>339</a> <span class="kw">return </span>result; |
| <a href=#340 id=340 data-nosnippet>340</a> } |
| <a href=#341 id=341 data-nosnippet>341</a> Const::error(ctx.interner()) |
| <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><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>const_eval_discriminant_cycle_result( |
| <a href=#345 id=345 data-nosnippet>345</a> <span class="kw">_</span>: <span class="kw-2">&</span><span class="kw">dyn </span>HirDatabase, |
| <a href=#346 id=346 data-nosnippet>346</a> <span class="kw">_</span>: salsa::Id, |
| <a href=#347 id=347 data-nosnippet>347</a> <span class="kw">_</span>: EnumVariantId, |
| <a href=#348 id=348 data-nosnippet>348</a>) -> <span class="prelude-ty">Result</span><i128, ConstEvalError> { |
| <a href=#349 id=349 data-nosnippet>349</a> <span class="prelude-val">Err</span>(ConstEvalError::MirLowerError(MirLowerError::Loop)) |
| <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="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>const_eval<<span class="lifetime">'db</span>>( |
| <a href=#353 id=353 data-nosnippet>353</a> db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>HirDatabase, |
| <a href=#354 id=354 data-nosnippet>354</a> def: ConstId, |
| <a href=#355 id=355 data-nosnippet>355</a> subst: GenericArgs<<span class="lifetime">'db</span>>, |
| <a href=#356 id=356 data-nosnippet>356</a> trait_env: <span class="prelude-ty">Option</span><ParamEnvAndCrate<<span class="lifetime">'db</span>>>, |
| <a href=#357 id=357 data-nosnippet>357</a>) -> <span class="prelude-ty">Result</span><Const<<span class="lifetime">'db</span>>, ConstEvalError> { |
| <a href=#358 id=358 data-nosnippet>358</a> <span class="kw">return match </span>const_eval_query(db, def, subst.store(), trait_env.map(|env| env.store())) { |
| <a href=#359 id=359 data-nosnippet>359</a> <span class="prelude-val">Ok</span>(konst) => <span class="prelude-val">Ok</span>(konst.as_ref()), |
| <a href=#360 id=360 data-nosnippet>360</a> <span class="prelude-val">Err</span>(err) => <span class="prelude-val">Err</span>(err.clone()), |
| <a href=#361 id=361 data-nosnippet>361</a> }; |
| <a href=#362 id=362 data-nosnippet>362</a> |
| <a href=#363 id=363 data-nosnippet>363</a> <span class="attr">#[salsa::tracked(returns(<span class="kw-2">ref</span>), cycle_result = const_eval_cycle_result)] |
| <a href=#364 id=364 data-nosnippet>364</a> </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>const_eval_query<<span class="lifetime">'db</span>>( |
| <a href=#365 id=365 data-nosnippet>365</a> db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>HirDatabase, |
| <a href=#366 id=366 data-nosnippet>366</a> def: ConstId, |
| <a href=#367 id=367 data-nosnippet>367</a> subst: StoredGenericArgs, |
| <a href=#368 id=368 data-nosnippet>368</a> trait_env: <span class="prelude-ty">Option</span><StoredParamEnvAndCrate>, |
| <a href=#369 id=369 data-nosnippet>369</a> ) -> <span class="prelude-ty">Result</span><StoredConst, ConstEvalError> { |
| <a href=#370 id=370 data-nosnippet>370</a> <span class="kw">let </span>body = db.monomorphized_mir_body( |
| <a href=#371 id=371 data-nosnippet>371</a> def.into(), |
| <a href=#372 id=372 data-nosnippet>372</a> subst, |
| <a href=#373 id=373 data-nosnippet>373</a> ParamEnvAndCrate { param_env: db.trait_environment(def.into()), krate: def.krate(db) } |
| <a href=#374 id=374 data-nosnippet>374</a> .store(), |
| <a href=#375 id=375 data-nosnippet>375</a> )<span class="question-mark">?</span>; |
| <a href=#376 id=376 data-nosnippet>376</a> <span class="kw">let </span>c = interpret_mir(db, body, <span class="bool-val">false</span>, trait_env.as_ref().map(|env| env.as_ref()))<span class="question-mark">?</span>.<span class="number">0</span><span class="question-mark">?</span>; |
| <a href=#377 id=377 data-nosnippet>377</a> <span class="prelude-val">Ok</span>(c.store()) |
| <a href=#378 id=378 data-nosnippet>378</a> } |
| <a href=#379 id=379 data-nosnippet>379</a> |
| <a href=#380 id=380 data-nosnippet>380</a> <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>const_eval_cycle_result( |
| <a href=#381 id=381 data-nosnippet>381</a> <span class="kw">_</span>: <span class="kw-2">&</span><span class="kw">dyn </span>HirDatabase, |
| <a href=#382 id=382 data-nosnippet>382</a> <span class="kw">_</span>: salsa::Id, |
| <a href=#383 id=383 data-nosnippet>383</a> <span class="kw">_</span>: ConstId, |
| <a href=#384 id=384 data-nosnippet>384</a> <span class="kw">_</span>: StoredGenericArgs, |
| <a href=#385 id=385 data-nosnippet>385</a> <span class="kw">_</span>: <span class="prelude-ty">Option</span><StoredParamEnvAndCrate>, |
| <a href=#386 id=386 data-nosnippet>386</a> ) -> <span class="prelude-ty">Result</span><StoredConst, ConstEvalError> { |
| <a href=#387 id=387 data-nosnippet>387</a> <span class="prelude-val">Err</span>(ConstEvalError::MirLowerError(MirLowerError::Loop)) |
| <a href=#388 id=388 data-nosnippet>388</a> } |
| <a href=#389 id=389 data-nosnippet>389</a>} |
| <a href=#390 id=390 data-nosnippet>390</a> |
| <a href=#391 id=391 data-nosnippet>391</a><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>const_eval_static<<span class="lifetime">'db</span>>( |
| <a href=#392 id=392 data-nosnippet>392</a> db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>HirDatabase, |
| <a href=#393 id=393 data-nosnippet>393</a> def: StaticId, |
| <a href=#394 id=394 data-nosnippet>394</a>) -> <span class="prelude-ty">Result</span><Const<<span class="lifetime">'db</span>>, ConstEvalError> { |
| <a href=#395 id=395 data-nosnippet>395</a> <span class="kw">return match </span>const_eval_static_query(db, def) { |
| <a href=#396 id=396 data-nosnippet>396</a> <span class="prelude-val">Ok</span>(konst) => <span class="prelude-val">Ok</span>(konst.as_ref()), |
| <a href=#397 id=397 data-nosnippet>397</a> <span class="prelude-val">Err</span>(err) => <span class="prelude-val">Err</span>(err.clone()), |
| <a href=#398 id=398 data-nosnippet>398</a> }; |
| <a href=#399 id=399 data-nosnippet>399</a> |
| <a href=#400 id=400 data-nosnippet>400</a> <span class="attr">#[salsa::tracked(returns(<span class="kw-2">ref</span>), cycle_result = const_eval_static_cycle_result)] |
| <a href=#401 id=401 data-nosnippet>401</a> </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>const_eval_static_query<<span class="lifetime">'db</span>>( |
| <a href=#402 id=402 data-nosnippet>402</a> db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>HirDatabase, |
| <a href=#403 id=403 data-nosnippet>403</a> def: StaticId, |
| <a href=#404 id=404 data-nosnippet>404</a> ) -> <span class="prelude-ty">Result</span><StoredConst, ConstEvalError> { |
| <a href=#405 id=405 data-nosnippet>405</a> <span class="kw">let </span>interner = DbInterner::new_no_crate(db); |
| <a href=#406 id=406 data-nosnippet>406</a> <span class="kw">let </span>body = db.monomorphized_mir_body( |
| <a href=#407 id=407 data-nosnippet>407</a> def.into(), |
| <a href=#408 id=408 data-nosnippet>408</a> GenericArgs::empty(interner).store(), |
| <a href=#409 id=409 data-nosnippet>409</a> ParamEnvAndCrate { |
| <a href=#410 id=410 data-nosnippet>410</a> param_env: db.trait_environment_for_body(def.into()), |
| <a href=#411 id=411 data-nosnippet>411</a> krate: def.krate(db), |
| <a href=#412 id=412 data-nosnippet>412</a> } |
| <a href=#413 id=413 data-nosnippet>413</a> .store(), |
| <a href=#414 id=414 data-nosnippet>414</a> )<span class="question-mark">?</span>; |
| <a href=#415 id=415 data-nosnippet>415</a> <span class="kw">let </span>c = interpret_mir(db, body, <span class="bool-val">false</span>, <span class="prelude-val">None</span>)<span class="question-mark">?</span>.<span class="number">0</span><span class="question-mark">?</span>; |
| <a href=#416 id=416 data-nosnippet>416</a> <span class="prelude-val">Ok</span>(c.store()) |
| <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">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>const_eval_static_cycle_result( |
| <a href=#420 id=420 data-nosnippet>420</a> <span class="kw">_</span>: <span class="kw-2">&</span><span class="kw">dyn </span>HirDatabase, |
| <a href=#421 id=421 data-nosnippet>421</a> <span class="kw">_</span>: salsa::Id, |
| <a href=#422 id=422 data-nosnippet>422</a> <span class="kw">_</span>: StaticId, |
| <a href=#423 id=423 data-nosnippet>423</a> ) -> <span class="prelude-ty">Result</span><StoredConst, ConstEvalError> { |
| <a href=#424 id=424 data-nosnippet>424</a> <span class="prelude-val">Err</span>(ConstEvalError::MirLowerError(MirLowerError::Loop)) |
| <a href=#425 id=425 data-nosnippet>425</a> } |
| <a href=#426 id=426 data-nosnippet>426</a>} |
| </code></pre></div></section></main></body></html> |
