| <!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/ide-completion/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="ide_completion" 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">ide_completion/</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">//! `completions` crate provides utilities for generating completions of user input. |
| <a href=#2 id=2 data-nosnippet>2</a> |
| <a href=#3 id=3 data-nosnippet>3</a></span><span class="comment">// It's useful to refer to code that is private in doc comments. |
| <a href=#4 id=4 data-nosnippet>4</a></span><span class="attr">#![allow(rustdoc::private_intra_doc_links)] |
| <a href=#5 id=5 data-nosnippet>5</a>#![cfg_attr(feature = <span class="string">"in-rust-tree"</span>, feature(rustc_private))] |
| <a href=#6 id=6 data-nosnippet>6</a> |
| <a href=#7 id=7 data-nosnippet>7</a>#[cfg(feature = <span class="string">"in-rust-tree"</span>)] |
| <a href=#8 id=8 data-nosnippet>8</a></span><span class="kw">extern crate </span>rustc_driver <span class="kw">as _</span>; |
| <a href=#9 id=9 data-nosnippet>9</a> |
| <a href=#10 id=10 data-nosnippet>10</a><span class="kw">mod </span>completions; |
| <a href=#11 id=11 data-nosnippet>11</a><span class="kw">mod </span>config; |
| <a href=#12 id=12 data-nosnippet>12</a><span class="kw">mod </span>context; |
| <a href=#13 id=13 data-nosnippet>13</a><span class="kw">mod </span>item; |
| <a href=#14 id=14 data-nosnippet>14</a><span class="kw">mod </span>render; |
| <a href=#15 id=15 data-nosnippet>15</a> |
| <a href=#16 id=16 data-nosnippet>16</a><span class="kw">mod </span>snippet; |
| <a href=#17 id=17 data-nosnippet>17</a><span class="attr">#[cfg(test)] |
| <a href=#18 id=18 data-nosnippet>18</a></span><span class="kw">mod </span>tests; |
| <a href=#19 id=19 data-nosnippet>19</a> |
| <a href=#20 id=20 data-nosnippet>20</a><span class="kw">use </span>ide_db::{ |
| <a href=#21 id=21 data-nosnippet>21</a> FilePosition, FxHashSet, RootDatabase, |
| <a href=#22 id=22 data-nosnippet>22</a> imports::insert_use::{<span class="self">self</span>, ImportScope}, |
| <a href=#23 id=23 data-nosnippet>23</a> syntax_helpers::tree_diff::diff, |
| <a href=#24 id=24 data-nosnippet>24</a> text_edit::TextEdit, |
| <a href=#25 id=25 data-nosnippet>25</a>}; |
| <a href=#26 id=26 data-nosnippet>26</a><span class="kw">use </span>syntax::ast::make; |
| <a href=#27 id=27 data-nosnippet>27</a> |
| <a href=#28 id=28 data-nosnippet>28</a><span class="kw">use </span>crate::{ |
| <a href=#29 id=29 data-nosnippet>29</a> completions::Completions, |
| <a href=#30 id=30 data-nosnippet>30</a> context::{ |
| <a href=#31 id=31 data-nosnippet>31</a> CompletionAnalysis, CompletionContext, NameRefContext, NameRefKind, PathCompletionCtx, |
| <a href=#32 id=32 data-nosnippet>32</a> PathKind, |
| <a href=#33 id=33 data-nosnippet>33</a> }, |
| <a href=#34 id=34 data-nosnippet>34</a>}; |
| <a href=#35 id=35 data-nosnippet>35</a> |
| <a href=#36 id=36 data-nosnippet>36</a><span class="kw">pub use </span>crate::{ |
| <a href=#37 id=37 data-nosnippet>37</a> config::{AutoImportExclusionType, CallableSnippets, CompletionConfig}, |
| <a href=#38 id=38 data-nosnippet>38</a> item::{ |
| <a href=#39 id=39 data-nosnippet>39</a> CompletionItem, CompletionItemKind, CompletionItemRefMode, CompletionRelevance, |
| <a href=#40 id=40 data-nosnippet>40</a> CompletionRelevancePostfixMatch, CompletionRelevanceReturnType, |
| <a href=#41 id=41 data-nosnippet>41</a> CompletionRelevanceTypeMatch, |
| <a href=#42 id=42 data-nosnippet>42</a> }, |
| <a href=#43 id=43 data-nosnippet>43</a> snippet::{Snippet, SnippetScope}, |
| <a href=#44 id=44 data-nosnippet>44</a>}; |
| <a href=#45 id=45 data-nosnippet>45</a> |
| <a href=#46 id=46 data-nosnippet>46</a><span class="attr">#[derive(Copy, Clone, Debug, PartialEq, Eq)] |
| <a href=#47 id=47 data-nosnippet>47</a></span><span class="kw">pub struct </span>CompletionFieldsToResolve { |
| <a href=#48 id=48 data-nosnippet>48</a> <span class="kw">pub </span>resolve_label_details: bool, |
| <a href=#49 id=49 data-nosnippet>49</a> <span class="kw">pub </span>resolve_tags: bool, |
| <a href=#50 id=50 data-nosnippet>50</a> <span class="kw">pub </span>resolve_detail: bool, |
| <a href=#51 id=51 data-nosnippet>51</a> <span class="kw">pub </span>resolve_documentation: bool, |
| <a href=#52 id=52 data-nosnippet>52</a> <span class="kw">pub </span>resolve_filter_text: bool, |
| <a href=#53 id=53 data-nosnippet>53</a> <span class="kw">pub </span>resolve_text_edit: bool, |
| <a href=#54 id=54 data-nosnippet>54</a> <span class="kw">pub </span>resolve_command: bool, |
| <a href=#55 id=55 data-nosnippet>55</a>} |
| <a href=#56 id=56 data-nosnippet>56</a> |
| <a href=#57 id=57 data-nosnippet>57</a><span class="kw">impl </span>CompletionFieldsToResolve { |
| <a href=#58 id=58 data-nosnippet>58</a> <span class="kw">pub fn </span>from_client_capabilities(client_capability_fields: <span class="kw-2">&</span>FxHashSet<<span class="kw-2">&</span>str>) -> <span class="self">Self </span>{ |
| <a href=#59 id=59 data-nosnippet>59</a> <span class="self">Self </span>{ |
| <a href=#60 id=60 data-nosnippet>60</a> resolve_label_details: client_capability_fields.contains(<span class="string">"labelDetails"</span>), |
| <a href=#61 id=61 data-nosnippet>61</a> resolve_tags: client_capability_fields.contains(<span class="string">"tags"</span>), |
| <a href=#62 id=62 data-nosnippet>62</a> resolve_detail: client_capability_fields.contains(<span class="string">"detail"</span>), |
| <a href=#63 id=63 data-nosnippet>63</a> resolve_documentation: client_capability_fields.contains(<span class="string">"documentation"</span>), |
| <a href=#64 id=64 data-nosnippet>64</a> resolve_filter_text: client_capability_fields.contains(<span class="string">"filterText"</span>), |
| <a href=#65 id=65 data-nosnippet>65</a> resolve_text_edit: client_capability_fields.contains(<span class="string">"textEdit"</span>), |
| <a href=#66 id=66 data-nosnippet>66</a> resolve_command: client_capability_fields.contains(<span class="string">"command"</span>), |
| <a href=#67 id=67 data-nosnippet>67</a> } |
| <a href=#68 id=68 data-nosnippet>68</a> } |
| <a href=#69 id=69 data-nosnippet>69</a> |
| <a href=#70 id=70 data-nosnippet>70</a> <span class="kw">pub const fn </span>empty() -> <span class="self">Self </span>{ |
| <a href=#71 id=71 data-nosnippet>71</a> <span class="self">Self </span>{ |
| <a href=#72 id=72 data-nosnippet>72</a> resolve_label_details: <span class="bool-val">false</span>, |
| <a href=#73 id=73 data-nosnippet>73</a> resolve_tags: <span class="bool-val">false</span>, |
| <a href=#74 id=74 data-nosnippet>74</a> resolve_detail: <span class="bool-val">false</span>, |
| <a href=#75 id=75 data-nosnippet>75</a> resolve_documentation: <span class="bool-val">false</span>, |
| <a href=#76 id=76 data-nosnippet>76</a> resolve_filter_text: <span class="bool-val">false</span>, |
| <a href=#77 id=77 data-nosnippet>77</a> resolve_text_edit: <span class="bool-val">false</span>, |
| <a href=#78 id=78 data-nosnippet>78</a> resolve_command: <span class="bool-val">false</span>, |
| <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>} |
| <a href=#82 id=82 data-nosnippet>82</a> |
| <a href=#83 id=83 data-nosnippet>83</a><span class="comment">//FIXME: split the following feature into fine-grained features. |
| <a href=#84 id=84 data-nosnippet>84</a> |
| <a href=#85 id=85 data-nosnippet>85</a>// Feature: Magic Completions |
| <a href=#86 id=86 data-nosnippet>86</a>// |
| <a href=#87 id=87 data-nosnippet>87</a>// In addition to usual reference completion, rust-analyzer provides some ✨magic✨ |
| <a href=#88 id=88 data-nosnippet>88</a>// completions as well: |
| <a href=#89 id=89 data-nosnippet>89</a>// |
| <a href=#90 id=90 data-nosnippet>90</a>// Keywords like `if`, `else` `while`, `loop` are completed with braces, and cursor |
| <a href=#91 id=91 data-nosnippet>91</a>// is placed at the appropriate position. Even though `if` is easy to type, you |
| <a href=#92 id=92 data-nosnippet>92</a>// still want to complete it, to get ` { }` for free! `return` is inserted with a |
| <a href=#93 id=93 data-nosnippet>93</a>// space or `;` depending on the return type of the function. |
| <a href=#94 id=94 data-nosnippet>94</a>// |
| <a href=#95 id=95 data-nosnippet>95</a>// When completing a function call, `()` are automatically inserted. If a function |
| <a href=#96 id=96 data-nosnippet>96</a>// takes arguments, the cursor is positioned inside the parenthesis. |
| <a href=#97 id=97 data-nosnippet>97</a>// |
| <a href=#98 id=98 data-nosnippet>98</a>// There are postfix completions, which can be triggered by typing something like |
| <a href=#99 id=99 data-nosnippet>99</a>// `foo().if`. The word after `.` determines postfix completion. Possible variants are: |
| <a href=#100 id=100 data-nosnippet>100</a>// |
| <a href=#101 id=101 data-nosnippet>101</a>// - `expr.if` -> `if expr {}` or `if let ... {}` for `Option` or `Result` |
| <a href=#102 id=102 data-nosnippet>102</a>// - `expr.match` -> `match expr {}` |
| <a href=#103 id=103 data-nosnippet>103</a>// - `expr.while` -> `while expr {}` or `while let ... {}` for `Option` or `Result` |
| <a href=#104 id=104 data-nosnippet>104</a>// - `expr.ref` -> `&expr` |
| <a href=#105 id=105 data-nosnippet>105</a>// - `expr.refm` -> `&mut expr` |
| <a href=#106 id=106 data-nosnippet>106</a>// - `expr.let` -> `let $0 = expr;` |
| <a href=#107 id=107 data-nosnippet>107</a>// - `expr.lete` -> `let $1 = expr else { $0 };` |
| <a href=#108 id=108 data-nosnippet>108</a>// - `expr.letm` -> `let mut $0 = expr;` |
| <a href=#109 id=109 data-nosnippet>109</a>// - `expr.not` -> `!expr` |
| <a href=#110 id=110 data-nosnippet>110</a>// - `expr.dbg` -> `dbg!(expr)` |
| <a href=#111 id=111 data-nosnippet>111</a>// - `expr.dbgr` -> `dbg!(&expr)` |
| <a href=#112 id=112 data-nosnippet>112</a>// - `expr.call` -> `(expr)` |
| <a href=#113 id=113 data-nosnippet>113</a>// |
| <a href=#114 id=114 data-nosnippet>114</a>// There also snippet completions: |
| <a href=#115 id=115 data-nosnippet>115</a>// |
| <a href=#116 id=116 data-nosnippet>116</a>// #### Expressions |
| <a href=#117 id=117 data-nosnippet>117</a>// |
| <a href=#118 id=118 data-nosnippet>118</a>// - `pd` -> `eprintln!(" = {:?}", );` |
| <a href=#119 id=119 data-nosnippet>119</a>// - `ppd` -> `eprintln!(" = {:#?}", );` |
| <a href=#120 id=120 data-nosnippet>120</a>// |
| <a href=#121 id=121 data-nosnippet>121</a>// #### Items |
| <a href=#122 id=122 data-nosnippet>122</a>// |
| <a href=#123 id=123 data-nosnippet>123</a>// - `tfn` -> `#[test] fn feature(){}` |
| <a href=#124 id=124 data-nosnippet>124</a>// - `tmod` -> |
| <a href=#125 id=125 data-nosnippet>125</a>// ```rust |
| <a href=#126 id=126 data-nosnippet>126</a>// #[cfg(test)] |
| <a href=#127 id=127 data-nosnippet>127</a>// mod tests { |
| <a href=#128 id=128 data-nosnippet>128</a>// use super::*; |
| <a href=#129 id=129 data-nosnippet>129</a>// |
| <a href=#130 id=130 data-nosnippet>130</a>// #[test] |
| <a href=#131 id=131 data-nosnippet>131</a>// fn test_name() {} |
| <a href=#132 id=132 data-nosnippet>132</a>// } |
| <a href=#133 id=133 data-nosnippet>133</a>// ``` |
| <a href=#134 id=134 data-nosnippet>134</a>// |
| <a href=#135 id=135 data-nosnippet>135</a>// And the auto import completions, enabled with the `rust-analyzer.completion.autoimport.enable` setting and the corresponding LSP client capabilities. |
| <a href=#136 id=136 data-nosnippet>136</a>// Those are the additional completion options with automatic `use` import and options from all project importable items, |
| <a href=#137 id=137 data-nosnippet>137</a>// fuzzy matched against the completion input. |
| <a href=#138 id=138 data-nosnippet>138</a>// |
| <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></span><span class="doccomment">/// Main entry point for completion. We run completion as a two-phase process. |
| <a href=#142 id=142 data-nosnippet>142</a>/// |
| <a href=#143 id=143 data-nosnippet>143</a>/// First, we look at the position and collect a so-called `CompletionContext`. |
| <a href=#144 id=144 data-nosnippet>144</a>/// This is a somewhat messy process, because, during completion, syntax tree is |
| <a href=#145 id=145 data-nosnippet>145</a>/// incomplete and can look really weird. |
| <a href=#146 id=146 data-nosnippet>146</a>/// |
| <a href=#147 id=147 data-nosnippet>147</a>/// Once the context is collected, we run a series of completion routines which |
| <a href=#148 id=148 data-nosnippet>148</a>/// look at the context and produce completion items. One subtlety about this |
| <a href=#149 id=149 data-nosnippet>149</a>/// phase is that completion engine should not filter by the substring which is |
| <a href=#150 id=150 data-nosnippet>150</a>/// already present, it should give all possible variants for the identifier at |
| <a href=#151 id=151 data-nosnippet>151</a>/// the caret. In other words, for |
| <a href=#152 id=152 data-nosnippet>152</a>/// |
| <a href=#153 id=153 data-nosnippet>153</a>/// ```ignore |
| <a href=#154 id=154 data-nosnippet>154</a>/// fn f() { |
| <a href=#155 id=155 data-nosnippet>155</a>/// let foo = 92; |
| <a href=#156 id=156 data-nosnippet>156</a>/// let _ = bar$0 |
| <a href=#157 id=157 data-nosnippet>157</a>/// } |
| <a href=#158 id=158 data-nosnippet>158</a>/// ``` |
| <a href=#159 id=159 data-nosnippet>159</a>/// |
| <a href=#160 id=160 data-nosnippet>160</a>/// `foo` *should* be present among the completion variants. Filtering by |
| <a href=#161 id=161 data-nosnippet>161</a>/// identifier prefix/fuzzy match should be done higher in the stack, together |
| <a href=#162 id=162 data-nosnippet>162</a>/// with ordering of completions (currently this is done by the client). |
| <a href=#163 id=163 data-nosnippet>163</a>/// |
| <a href=#164 id=164 data-nosnippet>164</a>/// # Speculative Completion Problem |
| <a href=#165 id=165 data-nosnippet>165</a>/// |
| <a href=#166 id=166 data-nosnippet>166</a>/// There's a curious unsolved problem in the current implementation. Often, you |
| <a href=#167 id=167 data-nosnippet>167</a>/// want to compute completions on a *slightly different* text document. |
| <a href=#168 id=168 data-nosnippet>168</a>/// |
| <a href=#169 id=169 data-nosnippet>169</a>/// In the simplest case, when the code looks like `let x = `, you want to |
| <a href=#170 id=170 data-nosnippet>170</a>/// insert a fake identifier to get a better syntax tree: `let x = complete_me`. |
| <a href=#171 id=171 data-nosnippet>171</a>/// |
| <a href=#172 id=172 data-nosnippet>172</a>/// We do this in `CompletionContext`, and it works OK-enough for *syntax* |
| <a href=#173 id=173 data-nosnippet>173</a>/// analysis. However, we might want to, eg, ask for the type of `complete_me` |
| <a href=#174 id=174 data-nosnippet>174</a>/// variable, and that's where our current infrastructure breaks down. salsa |
| <a href=#175 id=175 data-nosnippet>175</a>/// doesn't allow such "phantom" inputs. |
| <a href=#176 id=176 data-nosnippet>176</a>/// |
| <a href=#177 id=177 data-nosnippet>177</a>/// Another case where this would be instrumental is macro expansion. We want to |
| <a href=#178 id=178 data-nosnippet>178</a>/// insert a fake ident and re-expand code. There's `expand_speculative` as a |
| <a href=#179 id=179 data-nosnippet>179</a>/// workaround for this. |
| <a href=#180 id=180 data-nosnippet>180</a>/// |
| <a href=#181 id=181 data-nosnippet>181</a>/// A different use-case is completion of injection (examples and links in doc |
| <a href=#182 id=182 data-nosnippet>182</a>/// comments). When computing completion for a path in a doc-comment, you want |
| <a href=#183 id=183 data-nosnippet>183</a>/// to inject a fake path expression into the item being documented and complete |
| <a href=#184 id=184 data-nosnippet>184</a>/// that. |
| <a href=#185 id=185 data-nosnippet>185</a>/// |
| <a href=#186 id=186 data-nosnippet>186</a>/// IntelliJ has CodeFragment/Context infrastructure for that. You can create a |
| <a href=#187 id=187 data-nosnippet>187</a>/// temporary PSI node, and say that the context ("parent") of this node is some |
| <a href=#188 id=188 data-nosnippet>188</a>/// existing node. Asking for, eg, type of this `CodeFragment` node works |
| <a href=#189 id=189 data-nosnippet>189</a>/// correctly, as the underlying infrastructure makes use of contexts to do |
| <a href=#190 id=190 data-nosnippet>190</a>/// analysis. |
| <a href=#191 id=191 data-nosnippet>191</a></span><span class="kw">pub fn </span>completions( |
| <a href=#192 id=192 data-nosnippet>192</a> db: <span class="kw-2">&</span>RootDatabase, |
| <a href=#193 id=193 data-nosnippet>193</a> config: <span class="kw-2">&</span>CompletionConfig<<span class="lifetime">'_</span>>, |
| <a href=#194 id=194 data-nosnippet>194</a> position: FilePosition, |
| <a href=#195 id=195 data-nosnippet>195</a> trigger_character: <span class="prelude-ty">Option</span><char>, |
| <a href=#196 id=196 data-nosnippet>196</a>) -> <span class="prelude-ty">Option</span><Vec<CompletionItem>> { |
| <a href=#197 id=197 data-nosnippet>197</a> <span class="kw">let </span>(ctx, analysis) = <span class="kw-2">&</span>CompletionContext::new(db, position, config, trigger_character)<span class="question-mark">?</span>; |
| <a href=#198 id=198 data-nosnippet>198</a> <span class="kw">let </span><span class="kw-2">mut </span>completions = Completions::default(); |
| <a href=#199 id=199 data-nosnippet>199</a> |
| <a href=#200 id=200 data-nosnippet>200</a> <span class="comment">// prevent `(` from triggering unwanted completion noise |
| <a href=#201 id=201 data-nosnippet>201</a> </span><span class="kw">if </span>trigger_character == <span class="prelude-val">Some</span>(<span class="string">'('</span>) { |
| <a href=#202 id=202 data-nosnippet>202</a> <span class="kw">if let </span>CompletionAnalysis::NameRef(NameRefContext { |
| <a href=#203 id=203 data-nosnippet>203</a> kind: |
| <a href=#204 id=204 data-nosnippet>204</a> NameRefKind::Path( |
| <a href=#205 id=205 data-nosnippet>205</a> path_ctx @ PathCompletionCtx { kind: PathKind::Vis { has_in_token }, .. }, |
| <a href=#206 id=206 data-nosnippet>206</a> ), |
| <a href=#207 id=207 data-nosnippet>207</a> .. |
| <a href=#208 id=208 data-nosnippet>208</a> }) = analysis |
| <a href=#209 id=209 data-nosnippet>209</a> { |
| <a href=#210 id=210 data-nosnippet>210</a> completions::vis::complete_vis_path(<span class="kw-2">&mut </span>completions, ctx, path_ctx, has_in_token); |
| <a href=#211 id=211 data-nosnippet>211</a> } |
| <a href=#212 id=212 data-nosnippet>212</a> <span class="kw">return </span><span class="prelude-val">Some</span>(completions.into()); |
| <a href=#213 id=213 data-nosnippet>213</a> } |
| <a href=#214 id=214 data-nosnippet>214</a> |
| <a href=#215 id=215 data-nosnippet>215</a> <span class="comment">// when the user types a bare `_` (that is it does not belong to an identifier) |
| <a href=#216 id=216 data-nosnippet>216</a> // the user might just wanted to type a `_` for type inference or pattern discarding |
| <a href=#217 id=217 data-nosnippet>217</a> // so try to suppress completions in those cases |
| <a href=#218 id=218 data-nosnippet>218</a> </span><span class="kw">if </span>trigger_character == <span class="prelude-val">Some</span>(<span class="string">'_'</span>) |
| <a href=#219 id=219 data-nosnippet>219</a> && ctx.original_token.kind() == syntax::SyntaxKind::UNDERSCORE |
| <a href=#220 id=220 data-nosnippet>220</a> && <span class="kw">let </span>CompletionAnalysis::NameRef(NameRefContext { |
| <a href=#221 id=221 data-nosnippet>221</a> kind: |
| <a href=#222 id=222 data-nosnippet>222</a> NameRefKind::Path( |
| <a href=#223 id=223 data-nosnippet>223</a> path_ctx @ PathCompletionCtx { |
| <a href=#224 id=224 data-nosnippet>224</a> kind: PathKind::Type { .. } | PathKind::Pat { .. }, |
| <a href=#225 id=225 data-nosnippet>225</a> .. |
| <a href=#226 id=226 data-nosnippet>226</a> }, |
| <a href=#227 id=227 data-nosnippet>227</a> ), |
| <a href=#228 id=228 data-nosnippet>228</a> .. |
| <a href=#229 id=229 data-nosnippet>229</a> }) = analysis |
| <a href=#230 id=230 data-nosnippet>230</a> && path_ctx.is_trivial_path() |
| <a href=#231 id=231 data-nosnippet>231</a> { |
| <a href=#232 id=232 data-nosnippet>232</a> <span class="kw">return </span><span class="prelude-val">None</span>; |
| <a href=#233 id=233 data-nosnippet>233</a> } |
| <a href=#234 id=234 data-nosnippet>234</a> |
| <a href=#235 id=235 data-nosnippet>235</a> { |
| <a href=#236 id=236 data-nosnippet>236</a> <span class="kw">let </span>acc = <span class="kw-2">&mut </span>completions; |
| <a href=#237 id=237 data-nosnippet>237</a> |
| <a href=#238 id=238 data-nosnippet>238</a> <span class="kw">match </span>analysis { |
| <a href=#239 id=239 data-nosnippet>239</a> CompletionAnalysis::Name(name_ctx) => completions::complete_name(acc, ctx, name_ctx), |
| <a href=#240 id=240 data-nosnippet>240</a> CompletionAnalysis::NameRef(name_ref_ctx) => { |
| <a href=#241 id=241 data-nosnippet>241</a> completions::complete_name_ref(acc, ctx, name_ref_ctx) |
| <a href=#242 id=242 data-nosnippet>242</a> } |
| <a href=#243 id=243 data-nosnippet>243</a> CompletionAnalysis::Lifetime(lifetime_ctx) => { |
| <a href=#244 id=244 data-nosnippet>244</a> completions::lifetime::complete_label(acc, ctx, lifetime_ctx); |
| <a href=#245 id=245 data-nosnippet>245</a> completions::lifetime::complete_lifetime(acc, ctx, lifetime_ctx); |
| <a href=#246 id=246 data-nosnippet>246</a> } |
| <a href=#247 id=247 data-nosnippet>247</a> CompletionAnalysis::String { original, expanded: <span class="prelude-val">Some</span>(expanded) } => { |
| <a href=#248 id=248 data-nosnippet>248</a> completions::extern_abi::complete_extern_abi(acc, ctx, expanded); |
| <a href=#249 id=249 data-nosnippet>249</a> completions::format_string::format_string(acc, ctx, original, expanded); |
| <a href=#250 id=250 data-nosnippet>250</a> completions::env_vars::complete_cargo_env_vars(acc, ctx, original, expanded); |
| <a href=#251 id=251 data-nosnippet>251</a> completions::ra_fixture::complete_ra_fixture(acc, ctx, original, expanded); |
| <a href=#252 id=252 data-nosnippet>252</a> } |
| <a href=#253 id=253 data-nosnippet>253</a> CompletionAnalysis::UnexpandedAttrTT { |
| <a href=#254 id=254 data-nosnippet>254</a> colon_prefix, |
| <a href=#255 id=255 data-nosnippet>255</a> fake_attribute_under_caret: <span class="prelude-val">Some</span>(attr), |
| <a href=#256 id=256 data-nosnippet>256</a> extern_crate, |
| <a href=#257 id=257 data-nosnippet>257</a> } => { |
| <a href=#258 id=258 data-nosnippet>258</a> completions::attribute::complete_known_attribute_input( |
| <a href=#259 id=259 data-nosnippet>259</a> acc, |
| <a href=#260 id=260 data-nosnippet>260</a> ctx, |
| <a href=#261 id=261 data-nosnippet>261</a> colon_prefix, |
| <a href=#262 id=262 data-nosnippet>262</a> attr, |
| <a href=#263 id=263 data-nosnippet>263</a> extern_crate.as_ref(), |
| <a href=#264 id=264 data-nosnippet>264</a> ); |
| <a href=#265 id=265 data-nosnippet>265</a> } |
| <a href=#266 id=266 data-nosnippet>266</a> CompletionAnalysis::MacroSegment => { |
| <a href=#267 id=267 data-nosnippet>267</a> completions::macro_def::complete_macro_segment(acc, ctx); |
| <a href=#268 id=268 data-nosnippet>268</a> } |
| <a href=#269 id=269 data-nosnippet>269</a> CompletionAnalysis::UnexpandedAttrTT { .. } | CompletionAnalysis::String { .. } => (), |
| <a href=#270 id=270 data-nosnippet>270</a> } |
| <a href=#271 id=271 data-nosnippet>271</a> } |
| <a href=#272 id=272 data-nosnippet>272</a> |
| <a href=#273 id=273 data-nosnippet>273</a> <span class="prelude-val">Some</span>(completions.into()) |
| <a href=#274 id=274 data-nosnippet>274</a>} |
| <a href=#275 id=275 data-nosnippet>275</a> |
| <a href=#276 id=276 data-nosnippet>276</a><span class="doccomment">/// Resolves additional completion data at the position given. |
| <a href=#277 id=277 data-nosnippet>277</a>/// This is used for import insertion done via completions like flyimport and custom user snippets. |
| <a href=#278 id=278 data-nosnippet>278</a></span><span class="kw">pub fn </span>resolve_completion_edits( |
| <a href=#279 id=279 data-nosnippet>279</a> db: <span class="kw-2">&</span>RootDatabase, |
| <a href=#280 id=280 data-nosnippet>280</a> config: <span class="kw-2">&</span>CompletionConfig<<span class="lifetime">'_</span>>, |
| <a href=#281 id=281 data-nosnippet>281</a> FilePosition { file_id, offset }: FilePosition, |
| <a href=#282 id=282 data-nosnippet>282</a> imports: <span class="kw">impl </span>IntoIterator<Item = String>, |
| <a href=#283 id=283 data-nosnippet>283</a>) -> <span class="prelude-ty">Option</span><Vec<TextEdit>> { |
| <a href=#284 id=284 data-nosnippet>284</a> <span class="kw">let </span>_p = <span class="macro">tracing::info_span!</span>(<span class="string">"resolve_completion_edits"</span>).entered(); |
| <a href=#285 id=285 data-nosnippet>285</a> <span class="kw">let </span>sema = hir::Semantics::new(db); |
| <a href=#286 id=286 data-nosnippet>286</a> |
| <a href=#287 id=287 data-nosnippet>287</a> <span class="kw">let </span>editioned_file_id = sema.attach_first_edition(file_id); |
| <a href=#288 id=288 data-nosnippet>288</a> |
| <a href=#289 id=289 data-nosnippet>289</a> <span class="kw">let </span>original_file = sema.parse(editioned_file_id); |
| <a href=#290 id=290 data-nosnippet>290</a> <span class="kw">let </span>original_token = |
| <a href=#291 id=291 data-nosnippet>291</a> syntax::AstNode::syntax(<span class="kw-2">&</span>original_file).token_at_offset(offset).left_biased()<span class="question-mark">?</span>; |
| <a href=#292 id=292 data-nosnippet>292</a> <span class="kw">let </span>position_for_import = <span class="kw-2">&</span>original_token.parent()<span class="question-mark">?</span>; |
| <a href=#293 id=293 data-nosnippet>293</a> <span class="kw">let </span>scope = ImportScope::find_insert_use_container(position_for_import, <span class="kw-2">&</span>sema)<span class="question-mark">?</span>; |
| <a href=#294 id=294 data-nosnippet>294</a> |
| <a href=#295 id=295 data-nosnippet>295</a> <span class="kw">let </span>current_module = sema.scope(position_for_import)<span class="question-mark">?</span>.module(); |
| <a href=#296 id=296 data-nosnippet>296</a> <span class="kw">let </span>current_crate = current_module.krate(db); |
| <a href=#297 id=297 data-nosnippet>297</a> <span class="kw">let </span>current_edition = current_crate.edition(db); |
| <a href=#298 id=298 data-nosnippet>298</a> <span class="kw">let </span>new_ast = scope.clone_for_update(); |
| <a href=#299 id=299 data-nosnippet>299</a> <span class="kw">let </span><span class="kw-2">mut </span>import_insert = TextEdit::builder(); |
| <a href=#300 id=300 data-nosnippet>300</a> |
| <a href=#301 id=301 data-nosnippet>301</a> imports.into_iter().for_each(|full_import_path| { |
| <a href=#302 id=302 data-nosnippet>302</a> insert_use::insert_use( |
| <a href=#303 id=303 data-nosnippet>303</a> <span class="kw-2">&</span>new_ast, |
| <a href=#304 id=304 data-nosnippet>304</a> make::path_from_text_with_edition(<span class="kw-2">&</span>full_import_path, current_edition), |
| <a href=#305 id=305 data-nosnippet>305</a> <span class="kw-2">&</span>config.insert_use, |
| <a href=#306 id=306 data-nosnippet>306</a> ); |
| <a href=#307 id=307 data-nosnippet>307</a> }); |
| <a href=#308 id=308 data-nosnippet>308</a> |
| <a href=#309 id=309 data-nosnippet>309</a> diff(scope.as_syntax_node(), new_ast.as_syntax_node()).into_text_edit(<span class="kw-2">&mut </span>import_insert); |
| <a href=#310 id=310 data-nosnippet>310</a> <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[import_insert.finish()]) |
| <a href=#311 id=311 data-nosnippet>311</a>} |
| </code></pre></div></section></main></body></html> |
