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<!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/src/extend_selection.rs`."><title>extend_selection.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" 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/</div>extend_selection.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="kw">use </span>std::iter::successors;
<a href=#2 id=2 data-nosnippet>2</a>
<a href=#3 id=3 data-nosnippet>3</a><span class="kw">use </span>hir::Semantics;
<a href=#4 id=4 data-nosnippet>4</a><span class="kw">use </span>ide_db::RootDatabase;
<a href=#5 id=5 data-nosnippet>5</a><span class="kw">use </span>syntax::{
<a href=#6 id=6 data-nosnippet>6</a> Direction, NodeOrToken,
<a href=#7 id=7 data-nosnippet>7</a> SyntaxKind::{<span class="self">self</span>, <span class="kw-2">*</span>},
<a href=#8 id=8 data-nosnippet>8</a> SyntaxNode, SyntaxToken, T, TextRange, TextSize, TokenAtOffset,
<a href=#9 id=9 data-nosnippet>9</a> algo::{<span class="self">self</span>, skip_trivia_token},
<a href=#10 id=10 data-nosnippet>10</a> ast::{<span class="self">self</span>, AstNode, AstToken},
<a href=#11 id=11 data-nosnippet>11</a>};
<a href=#12 id=12 data-nosnippet>12</a>
<a href=#13 id=13 data-nosnippet>13</a><span class="kw">use </span><span class="kw">crate</span>::FileRange;
<a href=#14 id=14 data-nosnippet>14</a>
<a href=#15 id=15 data-nosnippet>15</a><span class="comment">// Feature: Expand and Shrink Selection
<a href=#16 id=16 data-nosnippet>16</a>//
<a href=#17 id=17 data-nosnippet>17</a>// Extends or shrinks the current selection to the encompassing syntactic construct
<a href=#18 id=18 data-nosnippet>18</a>// (expression, statement, item, module, etc). It works with multiple cursors.
<a href=#19 id=19 data-nosnippet>19</a>//
<a href=#20 id=20 data-nosnippet>20</a>// | Editor | Shortcut |
<a href=#21 id=21 data-nosnippet>21</a>// |---------|----------|
<a href=#22 id=22 data-nosnippet>22</a>// | VS Code | &lt;kbd&gt;Alt+Shift+→&lt;/kbd&gt;, &lt;kbd&gt;Alt+Shift+←&lt;/kbd&gt; |
<a href=#23 id=23 data-nosnippet>23</a>//
<a href=#24 id=24 data-nosnippet>24</a>// ![Expand and Shrink Selection](https://user-images.githubusercontent.com/48062697/113020651-b42fc800-917a-11eb-8a4f-cf1a07859fac.gif)
<a href=#25 id=25 data-nosnippet>25</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>extend_selection(db: <span class="kw-2">&amp;</span>RootDatabase, frange: FileRange) -&gt; TextRange {
<a href=#26 id=26 data-nosnippet>26</a> <span class="kw">let </span>sema = Semantics::new(db);
<a href=#27 id=27 data-nosnippet>27</a> <span class="kw">let </span>src = sema.parse_guess_edition(frange.file_id);
<a href=#28 id=28 data-nosnippet>28</a> try_extend_selection(<span class="kw-2">&amp;</span>sema, src.syntax(), frange).unwrap_or(frange.range)
<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">fn </span>try_extend_selection(
<a href=#32 id=32 data-nosnippet>32</a> sema: <span class="kw-2">&amp;</span>Semantics&lt;<span class="lifetime">'_</span>, RootDatabase&gt;,
<a href=#33 id=33 data-nosnippet>33</a> root: <span class="kw-2">&amp;</span>SyntaxNode,
<a href=#34 id=34 data-nosnippet>34</a> frange: FileRange,
<a href=#35 id=35 data-nosnippet>35</a>) -&gt; <span class="prelude-ty">Option</span>&lt;TextRange&gt; {
<a href=#36 id=36 data-nosnippet>36</a> <span class="kw">let </span>range = frange.range;
<a href=#37 id=37 data-nosnippet>37</a>
<a href=#38 id=38 data-nosnippet>38</a> <span class="kw">let </span>string_kinds = [COMMENT, STRING, BYTE_STRING, C_STRING];
<a href=#39 id=39 data-nosnippet>39</a> <span class="kw">let </span>list_kinds = [
<a href=#40 id=40 data-nosnippet>40</a> RECORD_PAT_FIELD_LIST,
<a href=#41 id=41 data-nosnippet>41</a> MATCH_ARM_LIST,
<a href=#42 id=42 data-nosnippet>42</a> RECORD_FIELD_LIST,
<a href=#43 id=43 data-nosnippet>43</a> TUPLE_FIELD_LIST,
<a href=#44 id=44 data-nosnippet>44</a> RECORD_EXPR_FIELD_LIST,
<a href=#45 id=45 data-nosnippet>45</a> VARIANT_LIST,
<a href=#46 id=46 data-nosnippet>46</a> USE_TREE_LIST,
<a href=#47 id=47 data-nosnippet>47</a> GENERIC_PARAM_LIST,
<a href=#48 id=48 data-nosnippet>48</a> GENERIC_ARG_LIST,
<a href=#49 id=49 data-nosnippet>49</a> TYPE_BOUND_LIST,
<a href=#50 id=50 data-nosnippet>50</a> PARAM_LIST,
<a href=#51 id=51 data-nosnippet>51</a> ARG_LIST,
<a href=#52 id=52 data-nosnippet>52</a> ARRAY_EXPR,
<a href=#53 id=53 data-nosnippet>53</a> TUPLE_EXPR,
<a href=#54 id=54 data-nosnippet>54</a> TUPLE_TYPE,
<a href=#55 id=55 data-nosnippet>55</a> TUPLE_PAT,
<a href=#56 id=56 data-nosnippet>56</a> WHERE_CLAUSE,
<a href=#57 id=57 data-nosnippet>57</a> ];
<a href=#58 id=58 data-nosnippet>58</a>
<a href=#59 id=59 data-nosnippet>59</a> <span class="kw">if </span>range.is_empty() {
<a href=#60 id=60 data-nosnippet>60</a> <span class="kw">let </span>offset = range.start();
<a href=#61 id=61 data-nosnippet>61</a> <span class="kw">let </span><span class="kw-2">mut </span>leaves = root.token_at_offset(offset);
<a href=#62 id=62 data-nosnippet>62</a> <span class="kw">if </span>leaves.clone().all(|it| it.kind() == WHITESPACE) {
<a href=#63 id=63 data-nosnippet>63</a> <span class="kw">return </span><span class="prelude-val">Some</span>(extend_ws(root, leaves.next()<span class="question-mark">?</span>, offset));
<a href=#64 id=64 data-nosnippet>64</a> }
<a href=#65 id=65 data-nosnippet>65</a> <span class="kw">let </span>leaf_range = <span class="kw">match </span>leaves {
<a href=#66 id=66 data-nosnippet>66</a> TokenAtOffset::None =&gt; <span class="kw">return </span><span class="prelude-val">None</span>,
<a href=#67 id=67 data-nosnippet>67</a> TokenAtOffset::Single(l) =&gt; {
<a href=#68 id=68 data-nosnippet>68</a> <span class="kw">if </span>string_kinds.contains(<span class="kw-2">&amp;</span>l.kind()) {
<a href=#69 id=69 data-nosnippet>69</a> extend_single_word_in_comment_or_string(<span class="kw-2">&amp;</span>l, offset)
<a href=#70 id=70 data-nosnippet>70</a> .unwrap_or_else(|| l.text_range())
<a href=#71 id=71 data-nosnippet>71</a> } <span class="kw">else </span>{
<a href=#72 id=72 data-nosnippet>72</a> l.text_range()
<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> TokenAtOffset::Between(l, r) =&gt; pick_best(l, r).text_range(),
<a href=#76 id=76 data-nosnippet>76</a> };
<a href=#77 id=77 data-nosnippet>77</a> <span class="kw">return </span><span class="prelude-val">Some</span>(leaf_range);
<a href=#78 id=78 data-nosnippet>78</a> };
<a href=#79 id=79 data-nosnippet>79</a> <span class="kw">let </span>node = <span class="kw">match </span>root.covering_element(range) {
<a href=#80 id=80 data-nosnippet>80</a> NodeOrToken::Token(token) =&gt; {
<a href=#81 id=81 data-nosnippet>81</a> <span class="kw">if </span>token.text_range() != range {
<a href=#82 id=82 data-nosnippet>82</a> <span class="kw">return </span><span class="prelude-val">Some</span>(token.text_range());
<a href=#83 id=83 data-nosnippet>83</a> }
<a href=#84 id=84 data-nosnippet>84</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(comment) = ast::Comment::cast(token.clone())
<a href=#85 id=85 data-nosnippet>85</a> &amp;&amp; <span class="kw">let </span><span class="prelude-val">Some</span>(range) = extend_comments(comment)
<a href=#86 id=86 data-nosnippet>86</a> {
<a href=#87 id=87 data-nosnippet>87</a> <span class="kw">return </span><span class="prelude-val">Some</span>(range);
<a href=#88 id=88 data-nosnippet>88</a> }
<a href=#89 id=89 data-nosnippet>89</a> token.parent()<span class="question-mark">?
<a href=#90 id=90 data-nosnippet>90</a> </span>}
<a href=#91 id=91 data-nosnippet>91</a> NodeOrToken::Node(node) =&gt; node,
<a href=#92 id=92 data-nosnippet>92</a> };
<a href=#93 id=93 data-nosnippet>93</a>
<a href=#94 id=94 data-nosnippet>94</a> <span class="comment">// if we are in single token_tree, we maybe live in macro or attr
<a href=#95 id=95 data-nosnippet>95</a> </span><span class="kw">if </span>node.kind() == TOKEN_TREE
<a href=#96 id=96 data-nosnippet>96</a> &amp;&amp; <span class="kw">let </span><span class="prelude-val">Some</span>(macro_call) = node.ancestors().find_map(ast::MacroCall::cast)
<a href=#97 id=97 data-nosnippet>97</a> &amp;&amp; <span class="kw">let </span><span class="prelude-val">Some</span>(range) = extend_tokens_from_range(sema, macro_call, range)
<a href=#98 id=98 data-nosnippet>98</a> {
<a href=#99 id=99 data-nosnippet>99</a> <span class="kw">return </span><span class="prelude-val">Some</span>(range);
<a href=#100 id=100 data-nosnippet>100</a> }
<a href=#101 id=101 data-nosnippet>101</a>
<a href=#102 id=102 data-nosnippet>102</a> <span class="kw">if </span>node.text_range() != range {
<a href=#103 id=103 data-nosnippet>103</a> <span class="kw">return </span><span class="prelude-val">Some</span>(node.text_range());
<a href=#104 id=104 data-nosnippet>104</a> }
<a href=#105 id=105 data-nosnippet>105</a>
<a href=#106 id=106 data-nosnippet>106</a> <span class="kw">let </span>node = shallowest_node(<span class="kw-2">&amp;</span>node);
<a href=#107 id=107 data-nosnippet>107</a>
<a href=#108 id=108 data-nosnippet>108</a> <span class="kw">if </span>node.parent().is_some_and(|n| list_kinds.contains(<span class="kw-2">&amp;</span>n.kind()))
<a href=#109 id=109 data-nosnippet>109</a> &amp;&amp; <span class="kw">let </span><span class="prelude-val">Some</span>(range) = extend_list_item(<span class="kw-2">&amp;</span>node)
<a href=#110 id=110 data-nosnippet>110</a> {
<a href=#111 id=111 data-nosnippet>111</a> <span class="kw">return </span><span class="prelude-val">Some</span>(range);
<a href=#112 id=112 data-nosnippet>112</a> }
<a href=#113 id=113 data-nosnippet>113</a>
<a href=#114 id=114 data-nosnippet>114</a> node.parent().map(|it| it.text_range())
<a href=#115 id=115 data-nosnippet>115</a>}
<a href=#116 id=116 data-nosnippet>116</a>
<a href=#117 id=117 data-nosnippet>117</a><span class="kw">fn </span>extend_tokens_from_range(
<a href=#118 id=118 data-nosnippet>118</a> sema: <span class="kw-2">&amp;</span>Semantics&lt;<span class="lifetime">'_</span>, RootDatabase&gt;,
<a href=#119 id=119 data-nosnippet>119</a> macro_call: ast::MacroCall,
<a href=#120 id=120 data-nosnippet>120</a> original_range: TextRange,
<a href=#121 id=121 data-nosnippet>121</a>) -&gt; <span class="prelude-ty">Option</span>&lt;TextRange&gt; {
<a href=#122 id=122 data-nosnippet>122</a> <span class="kw">let </span>src = macro_call.syntax().covering_element(original_range);
<a href=#123 id=123 data-nosnippet>123</a> <span class="kw">let </span>(first_token, last_token) = <span class="kw">match </span>src {
<a href=#124 id=124 data-nosnippet>124</a> NodeOrToken::Node(it) =&gt; (it.first_token()<span class="question-mark">?</span>, it.last_token()<span class="question-mark">?</span>),
<a href=#125 id=125 data-nosnippet>125</a> NodeOrToken::Token(it) =&gt; (it.clone(), it),
<a href=#126 id=126 data-nosnippet>126</a> };
<a href=#127 id=127 data-nosnippet>127</a>
<a href=#128 id=128 data-nosnippet>128</a> <span class="kw">let </span><span class="kw-2">mut </span>first_token = skip_trivia_token(first_token, Direction::Next)<span class="question-mark">?</span>;
<a href=#129 id=129 data-nosnippet>129</a> <span class="kw">let </span><span class="kw-2">mut </span>last_token = skip_trivia_token(last_token, Direction::Prev)<span class="question-mark">?</span>;
<a href=#130 id=130 data-nosnippet>130</a>
<a href=#131 id=131 data-nosnippet>131</a> <span class="kw">while </span>!original_range.contains_range(first_token.text_range()) {
<a href=#132 id=132 data-nosnippet>132</a> first_token = skip_trivia_token(first_token.next_token()<span class="question-mark">?</span>, Direction::Next)<span class="question-mark">?</span>;
<a href=#133 id=133 data-nosnippet>133</a> }
<a href=#134 id=134 data-nosnippet>134</a> <span class="kw">while </span>!original_range.contains_range(last_token.text_range()) {
<a href=#135 id=135 data-nosnippet>135</a> last_token = skip_trivia_token(last_token.prev_token()<span class="question-mark">?</span>, Direction::Prev)<span class="question-mark">?</span>;
<a href=#136 id=136 data-nosnippet>136</a> }
<a href=#137 id=137 data-nosnippet>137</a>
<a href=#138 id=138 data-nosnippet>138</a> <span class="comment">// compute original mapped token range
<a href=#139 id=139 data-nosnippet>139</a> </span><span class="kw">let </span>extended = {
<a href=#140 id=140 data-nosnippet>140</a> <span class="kw">let </span>fst_expanded = sema.descend_into_macros_single_exact(first_token.clone());
<a href=#141 id=141 data-nosnippet>141</a> <span class="kw">let </span>lst_expanded = sema.descend_into_macros_single_exact(last_token.clone());
<a href=#142 id=142 data-nosnippet>142</a> <span class="kw">let </span><span class="kw-2">mut </span>lca =
<a href=#143 id=143 data-nosnippet>143</a> algo::least_common_ancestor(<span class="kw-2">&amp;</span>fst_expanded.parent()<span class="question-mark">?</span>, <span class="kw-2">&amp;</span>lst_expanded.parent()<span class="question-mark">?</span>)<span class="question-mark">?</span>;
<a href=#144 id=144 data-nosnippet>144</a> lca = shallowest_node(<span class="kw-2">&amp;</span>lca);
<a href=#145 id=145 data-nosnippet>145</a> <span class="kw">if </span>lca.first_token() == <span class="prelude-val">Some</span>(fst_expanded) &amp;&amp; lca.last_token() == <span class="prelude-val">Some</span>(lst_expanded) {
<a href=#146 id=146 data-nosnippet>146</a> lca = lca.parent()<span class="question-mark">?</span>;
<a href=#147 id=147 data-nosnippet>147</a> }
<a href=#148 id=148 data-nosnippet>148</a> lca
<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> <span class="comment">// Compute parent node range
<a href=#152 id=152 data-nosnippet>152</a> </span><span class="kw">let </span>validate = || {
<a href=#153 id=153 data-nosnippet>153</a> <span class="kw">let </span>extended = <span class="kw-2">&amp;</span>extended;
<a href=#154 id=154 data-nosnippet>154</a> <span class="kw">move </span>|token: <span class="kw-2">&amp;</span>SyntaxToken| -&gt; bool {
<a href=#155 id=155 data-nosnippet>155</a> <span class="kw">let </span>expanded = sema.descend_into_macros_single_exact(token.clone());
<a href=#156 id=156 data-nosnippet>156</a> <span class="kw">let </span>parent = <span class="kw">match </span>expanded.parent() {
<a href=#157 id=157 data-nosnippet>157</a> <span class="prelude-val">Some</span>(it) =&gt; it,
<a href=#158 id=158 data-nosnippet>158</a> <span class="prelude-val">None </span>=&gt; <span class="kw">return </span><span class="bool-val">false</span>,
<a href=#159 id=159 data-nosnippet>159</a> };
<a href=#160 id=160 data-nosnippet>160</a> algo::least_common_ancestor(extended, <span class="kw-2">&amp;</span>parent).as_ref() == <span class="prelude-val">Some</span>(extended)
<a href=#161 id=161 data-nosnippet>161</a> }
<a href=#162 id=162 data-nosnippet>162</a> };
<a href=#163 id=163 data-nosnippet>163</a>
<a href=#164 id=164 data-nosnippet>164</a> <span class="comment">// Find the first and last text range under expanded parent
<a href=#165 id=165 data-nosnippet>165</a> </span><span class="kw">let </span>first = successors(<span class="prelude-val">Some</span>(first_token), |token| {
<a href=#166 id=166 data-nosnippet>166</a> <span class="kw">let </span>token = token.prev_token()<span class="question-mark">?</span>;
<a href=#167 id=167 data-nosnippet>167</a> skip_trivia_token(token, Direction::Prev)
<a href=#168 id=168 data-nosnippet>168</a> })
<a href=#169 id=169 data-nosnippet>169</a> .take_while(validate())
<a href=#170 id=170 data-nosnippet>170</a> .last()<span class="question-mark">?</span>;
<a href=#171 id=171 data-nosnippet>171</a>
<a href=#172 id=172 data-nosnippet>172</a> <span class="kw">let </span>last = successors(<span class="prelude-val">Some</span>(last_token), |token| {
<a href=#173 id=173 data-nosnippet>173</a> <span class="kw">let </span>token = token.next_token()<span class="question-mark">?</span>;
<a href=#174 id=174 data-nosnippet>174</a> skip_trivia_token(token, Direction::Next)
<a href=#175 id=175 data-nosnippet>175</a> })
<a href=#176 id=176 data-nosnippet>176</a> .take_while(validate())
<a href=#177 id=177 data-nosnippet>177</a> .last()<span class="question-mark">?</span>;
<a href=#178 id=178 data-nosnippet>178</a>
<a href=#179 id=179 data-nosnippet>179</a> <span class="kw">let </span>range = first.text_range().cover(last.text_range());
<a href=#180 id=180 data-nosnippet>180</a> <span class="kw">if </span>range.contains_range(original_range) &amp;&amp; <span class="macro">original_range !</span>= range { <span class="prelude-val">Some</span>(range) } <span class="kw">else </span>{ <span class="prelude-val">None </span>}
<a href=#181 id=181 data-nosnippet>181</a>}
<a href=#182 id=182 data-nosnippet>182</a>
<a href=#183 id=183 data-nosnippet>183</a><span class="doccomment">/// Find the shallowest node with same range, which allows us to traverse siblings.
<a href=#184 id=184 data-nosnippet>184</a></span><span class="kw">fn </span>shallowest_node(node: <span class="kw-2">&amp;</span>SyntaxNode) -&gt; SyntaxNode {
<a href=#185 id=185 data-nosnippet>185</a> node.ancestors().take_while(|n| n.text_range() == node.text_range()).last().unwrap()
<a href=#186 id=186 data-nosnippet>186</a>}
<a href=#187 id=187 data-nosnippet>187</a>
<a href=#188 id=188 data-nosnippet>188</a><span class="kw">fn </span>extend_single_word_in_comment_or_string(
<a href=#189 id=189 data-nosnippet>189</a> leaf: <span class="kw-2">&amp;</span>SyntaxToken,
<a href=#190 id=190 data-nosnippet>190</a> offset: TextSize,
<a href=#191 id=191 data-nosnippet>191</a>) -&gt; <span class="prelude-ty">Option</span>&lt;TextRange&gt; {
<a href=#192 id=192 data-nosnippet>192</a> <span class="kw">let </span>text: <span class="kw-2">&amp;</span>str = leaf.text();
<a href=#193 id=193 data-nosnippet>193</a> <span class="kw">let </span>cursor_position: u32 = (offset - leaf.text_range().start()).into();
<a href=#194 id=194 data-nosnippet>194</a>
<a href=#195 id=195 data-nosnippet>195</a> <span class="kw">let </span>(before, after) = text.split_at(cursor_position <span class="kw">as </span>usize);
<a href=#196 id=196 data-nosnippet>196</a>
<a href=#197 id=197 data-nosnippet>197</a> <span class="kw">fn </span>non_word_char(c: char) -&gt; bool {
<a href=#198 id=198 data-nosnippet>198</a> !(c.is_alphanumeric() || c == <span class="string">'_'</span>)
<a href=#199 id=199 data-nosnippet>199</a> }
<a href=#200 id=200 data-nosnippet>200</a>
<a href=#201 id=201 data-nosnippet>201</a> <span class="kw">let </span>start_idx = before.rfind(non_word_char)<span class="question-mark">? </span><span class="kw">as </span>u32;
<a href=#202 id=202 data-nosnippet>202</a> <span class="kw">let </span>end_idx = after.find(non_word_char).unwrap_or(after.len()) <span class="kw">as </span>u32;
<a href=#203 id=203 data-nosnippet>203</a>
<a href=#204 id=204 data-nosnippet>204</a> <span class="comment">// FIXME: use `ceil_char_boundary` from `std::str` when it gets stable
<a href=#205 id=205 data-nosnippet>205</a> // https://github.com/rust-lang/rust/issues/93743
<a href=#206 id=206 data-nosnippet>206</a> </span><span class="kw">fn </span>ceil_char_boundary(text: <span class="kw-2">&amp;</span>str, index: u32) -&gt; u32 {
<a href=#207 id=207 data-nosnippet>207</a> (index..).find(|<span class="kw-2">&amp;</span>index| text.is_char_boundary(index <span class="kw">as </span>usize)).unwrap_or(text.len() <span class="kw">as </span>u32)
<a href=#208 id=208 data-nosnippet>208</a> }
<a href=#209 id=209 data-nosnippet>209</a>
<a href=#210 id=210 data-nosnippet>210</a> <span class="kw">let </span>from: TextSize = ceil_char_boundary(text, start_idx + <span class="number">1</span>).into();
<a href=#211 id=211 data-nosnippet>211</a> <span class="kw">let </span>to: TextSize = (cursor_position + end_idx).into();
<a href=#212 id=212 data-nosnippet>212</a>
<a href=#213 id=213 data-nosnippet>213</a> <span class="kw">let </span>range = TextRange::new(from, to);
<a href=#214 id=214 data-nosnippet>214</a> <span class="kw">if </span>range.is_empty() { <span class="prelude-val">None </span>} <span class="kw">else </span>{ <span class="prelude-val">Some</span>(range + leaf.text_range().start()) }
<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><span class="kw">fn </span>extend_ws(root: <span class="kw-2">&amp;</span>SyntaxNode, ws: SyntaxToken, offset: TextSize) -&gt; TextRange {
<a href=#218 id=218 data-nosnippet>218</a> <span class="kw">let </span>ws_text = ws.text();
<a href=#219 id=219 data-nosnippet>219</a> <span class="kw">let </span>suffix = TextRange::new(offset, ws.text_range().end()) - ws.text_range().start();
<a href=#220 id=220 data-nosnippet>220</a> <span class="kw">let </span>prefix = TextRange::new(ws.text_range().start(), offset) - ws.text_range().start();
<a href=#221 id=221 data-nosnippet>221</a> <span class="kw">let </span>ws_suffix = <span class="kw-2">&amp;</span>ws_text[suffix];
<a href=#222 id=222 data-nosnippet>222</a> <span class="kw">let </span>ws_prefix = <span class="kw-2">&amp;</span>ws_text[prefix];
<a href=#223 id=223 data-nosnippet>223</a> <span class="kw">if </span>ws_text.contains(<span class="string">'\n'</span>)
<a href=#224 id=224 data-nosnippet>224</a> &amp;&amp; !ws_suffix.contains(<span class="string">'\n'</span>)
<a href=#225 id=225 data-nosnippet>225</a> &amp;&amp; <span class="kw">let </span><span class="prelude-val">Some</span>(node) = ws.next_sibling_or_token()
<a href=#226 id=226 data-nosnippet>226</a> {
<a href=#227 id=227 data-nosnippet>227</a> <span class="kw">let </span>start = <span class="kw">match </span>ws_prefix.rfind(<span class="string">'\n'</span>) {
<a href=#228 id=228 data-nosnippet>228</a> <span class="prelude-val">Some</span>(idx) =&gt; ws.text_range().start() + TextSize::from((idx + <span class="number">1</span>) <span class="kw">as </span>u32),
<a href=#229 id=229 data-nosnippet>229</a> <span class="prelude-val">None </span>=&gt; node.text_range().start(),
<a href=#230 id=230 data-nosnippet>230</a> };
<a href=#231 id=231 data-nosnippet>231</a> <span class="kw">let </span>end = <span class="kw">if </span>root.text().char_at(node.text_range().end()) == <span class="prelude-val">Some</span>(<span class="string">'\n'</span>) {
<a href=#232 id=232 data-nosnippet>232</a> node.text_range().end() + TextSize::of(<span class="string">'\n'</span>)
<a href=#233 id=233 data-nosnippet>233</a> } <span class="kw">else </span>{
<a href=#234 id=234 data-nosnippet>234</a> node.text_range().end()
<a href=#235 id=235 data-nosnippet>235</a> };
<a href=#236 id=236 data-nosnippet>236</a> <span class="kw">return </span>TextRange::new(start, end);
<a href=#237 id=237 data-nosnippet>237</a> }
<a href=#238 id=238 data-nosnippet>238</a> ws.text_range()
<a href=#239 id=239 data-nosnippet>239</a>}
<a href=#240 id=240 data-nosnippet>240</a>
<a href=#241 id=241 data-nosnippet>241</a><span class="kw">fn </span>pick_best(l: SyntaxToken, r: SyntaxToken) -&gt; SyntaxToken {
<a href=#242 id=242 data-nosnippet>242</a> <span class="kw">return if </span>priority(<span class="kw-2">&amp;</span>r) &gt; priority(<span class="kw-2">&amp;</span>l) { r } <span class="kw">else </span>{ l };
<a href=#243 id=243 data-nosnippet>243</a> <span class="kw">fn </span>priority(n: <span class="kw-2">&amp;</span>SyntaxToken) -&gt; usize {
<a href=#244 id=244 data-nosnippet>244</a> <span class="kw">match </span>n.kind() {
<a href=#245 id=245 data-nosnippet>245</a> WHITESPACE =&gt; <span class="number">0</span>,
<a href=#246 id=246 data-nosnippet>246</a> IDENT | <span class="macro">T!</span>[<span class="self">self</span>] | <span class="macro">T!</span>[<span class="kw">super</span>] | <span class="macro">T!</span>[<span class="kw">crate</span>] | <span class="macro">T!</span>[<span class="self">Self</span>] | LIFETIME_IDENT =&gt; <span class="number">2</span>,
<a href=#247 id=247 data-nosnippet>247</a> <span class="kw">_ </span>=&gt; <span class="number">1</span>,
<a href=#248 id=248 data-nosnippet>248</a> }
<a href=#249 id=249 data-nosnippet>249</a> }
<a href=#250 id=250 data-nosnippet>250</a>}
<a href=#251 id=251 data-nosnippet>251</a>
<a href=#252 id=252 data-nosnippet>252</a><span class="doccomment">/// Extend list item selection to include nearby delimiter and whitespace.
<a href=#253 id=253 data-nosnippet>253</a></span><span class="kw">fn </span>extend_list_item(node: <span class="kw-2">&amp;</span>SyntaxNode) -&gt; <span class="prelude-ty">Option</span>&lt;TextRange&gt; {
<a href=#254 id=254 data-nosnippet>254</a> <span class="kw">fn </span>is_single_line_ws(node: <span class="kw-2">&amp;</span>SyntaxToken) -&gt; bool {
<a href=#255 id=255 data-nosnippet>255</a> node.kind() == WHITESPACE &amp;&amp; !node.text().contains(<span class="string">'\n'</span>)
<a href=#256 id=256 data-nosnippet>256</a> }
<a href=#257 id=257 data-nosnippet>257</a>
<a href=#258 id=258 data-nosnippet>258</a> <span class="kw">fn </span>nearby_delimiter(
<a href=#259 id=259 data-nosnippet>259</a> delimiter_kind: SyntaxKind,
<a href=#260 id=260 data-nosnippet>260</a> node: <span class="kw-2">&amp;</span>SyntaxNode,
<a href=#261 id=261 data-nosnippet>261</a> dir: Direction,
<a href=#262 id=262 data-nosnippet>262</a> ) -&gt; <span class="prelude-ty">Option</span>&lt;SyntaxToken&gt; {
<a href=#263 id=263 data-nosnippet>263</a> node.siblings_with_tokens(dir)
<a href=#264 id=264 data-nosnippet>264</a> .skip(<span class="number">1</span>)
<a href=#265 id=265 data-nosnippet>265</a> .find(|node| <span class="kw">match </span>node {
<a href=#266 id=266 data-nosnippet>266</a> NodeOrToken::Node(<span class="kw">_</span>) =&gt; <span class="bool-val">true</span>,
<a href=#267 id=267 data-nosnippet>267</a> NodeOrToken::Token(it) =&gt; !is_single_line_ws(it),
<a href=#268 id=268 data-nosnippet>268</a> })
<a href=#269 id=269 data-nosnippet>269</a> .and_then(|it| it.into_token())
<a href=#270 id=270 data-nosnippet>270</a> .filter(|node| node.kind() == delimiter_kind)
<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="kw">let </span>delimiter = <span class="kw">match </span>node.kind() {
<a href=#274 id=274 data-nosnippet>274</a> TYPE_BOUND =&gt; <span class="macro">T!</span>[+],
<a href=#275 id=275 data-nosnippet>275</a> <span class="kw">_ </span>=&gt; <span class="macro">T!</span>[,],
<a href=#276 id=276 data-nosnippet>276</a> };
<a href=#277 id=277 data-nosnippet>277</a>
<a href=#278 id=278 data-nosnippet>278</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(delimiter_node) = nearby_delimiter(delimiter, node, Direction::Next) {
<a href=#279 id=279 data-nosnippet>279</a> <span class="comment">// Include any following whitespace when delimiter is after list item.
<a href=#280 id=280 data-nosnippet>280</a> </span><span class="kw">let </span>final_node = delimiter_node
<a href=#281 id=281 data-nosnippet>281</a> .next_sibling_or_token()
<a href=#282 id=282 data-nosnippet>282</a> .and_then(|it| it.into_token())
<a href=#283 id=283 data-nosnippet>283</a> .filter(is_single_line_ws)
<a href=#284 id=284 data-nosnippet>284</a> .unwrap_or(delimiter_node);
<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">Some</span>(TextRange::new(node.text_range().start(), final_node.text_range().end()));
<a href=#287 id=287 data-nosnippet>287</a> }
<a href=#288 id=288 data-nosnippet>288</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(delimiter_node) = nearby_delimiter(delimiter, node, Direction::Prev) {
<a href=#289 id=289 data-nosnippet>289</a> <span class="kw">return </span><span class="prelude-val">Some</span>(TextRange::new(delimiter_node.text_range().start(), node.text_range().end()));
<a href=#290 id=290 data-nosnippet>290</a> }
<a href=#291 id=291 data-nosnippet>291</a>
<a href=#292 id=292 data-nosnippet>292</a> <span class="prelude-val">None
<a href=#293 id=293 data-nosnippet>293</a></span>}
<a href=#294 id=294 data-nosnippet>294</a>
<a href=#295 id=295 data-nosnippet>295</a><span class="kw">fn </span>extend_comments(comment: ast::Comment) -&gt; <span class="prelude-ty">Option</span>&lt;TextRange&gt; {
<a href=#296 id=296 data-nosnippet>296</a> <span class="kw">let </span>prev = adj_comments(<span class="kw-2">&amp;</span>comment, Direction::Prev);
<a href=#297 id=297 data-nosnippet>297</a> <span class="kw">let </span>next = adj_comments(<span class="kw-2">&amp;</span>comment, Direction::Next);
<a href=#298 id=298 data-nosnippet>298</a> <span class="kw">if </span><span class="macro">prev !</span>= next {
<a href=#299 id=299 data-nosnippet>299</a> <span class="prelude-val">Some</span>(TextRange::new(prev.syntax().text_range().start(), next.syntax().text_range().end()))
<a href=#300 id=300 data-nosnippet>300</a> } <span class="kw">else </span>{
<a href=#301 id=301 data-nosnippet>301</a> <span class="prelude-val">None
<a href=#302 id=302 data-nosnippet>302</a> </span>}
<a href=#303 id=303 data-nosnippet>303</a>}
<a href=#304 id=304 data-nosnippet>304</a>
<a href=#305 id=305 data-nosnippet>305</a><span class="kw">fn </span>adj_comments(comment: <span class="kw-2">&amp;</span>ast::Comment, dir: Direction) -&gt; ast::Comment {
<a href=#306 id=306 data-nosnippet>306</a> <span class="kw">let </span><span class="kw-2">mut </span>res = comment.clone();
<a href=#307 id=307 data-nosnippet>307</a> <span class="kw">for </span>element <span class="kw">in </span>comment.syntax().siblings_with_tokens(dir) {
<a href=#308 id=308 data-nosnippet>308</a> <span class="kw">let </span>token = <span class="kw">match </span>element.as_token() {
<a href=#309 id=309 data-nosnippet>309</a> <span class="prelude-val">None </span>=&gt; <span class="kw">break</span>,
<a href=#310 id=310 data-nosnippet>310</a> <span class="prelude-val">Some</span>(token) =&gt; token,
<a href=#311 id=311 data-nosnippet>311</a> };
<a href=#312 id=312 data-nosnippet>312</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(c) = ast::Comment::cast(token.clone()) {
<a href=#313 id=313 data-nosnippet>313</a> res = c
<a href=#314 id=314 data-nosnippet>314</a> } <span class="kw">else if </span>token.kind() != WHITESPACE || token.text().contains(<span class="string">"\n\n"</span>) {
<a href=#315 id=315 data-nosnippet>315</a> <span class="kw">break</span>;
<a href=#316 id=316 data-nosnippet>316</a> }
<a href=#317 id=317 data-nosnippet>317</a> }
<a href=#318 id=318 data-nosnippet>318</a> res
<a href=#319 id=319 data-nosnippet>319</a>}
<a href=#320 id=320 data-nosnippet>320</a>
<a href=#321 id=321 data-nosnippet>321</a><span class="attr">#[cfg(test)]
<a href=#322 id=322 data-nosnippet>322</a></span><span class="kw">mod </span>tests {
<a href=#323 id=323 data-nosnippet>323</a> <span class="kw">use </span><span class="kw">crate</span>::fixture;
<a href=#324 id=324 data-nosnippet>324</a>
<a href=#325 id=325 data-nosnippet>325</a> <span class="kw">use </span>super::<span class="kw-2">*</span>;
<a href=#326 id=326 data-nosnippet>326</a>
<a href=#327 id=327 data-nosnippet>327</a> <span class="kw">fn </span>do_check(before: <span class="kw-2">&amp;</span>str, afters: <span class="kw-2">&amp;</span>[<span class="kw-2">&amp;</span>str]) {
<a href=#328 id=328 data-nosnippet>328</a> <span class="kw">let </span>(analysis, position) = fixture::position(before);
<a href=#329 id=329 data-nosnippet>329</a> <span class="kw">let </span>before = analysis.file_text(position.file_id).unwrap();
<a href=#330 id=330 data-nosnippet>330</a> <span class="kw">let </span>range = TextRange::empty(position.offset);
<a href=#331 id=331 data-nosnippet>331</a> <span class="kw">let </span><span class="kw-2">mut </span>frange = FileRange { file_id: position.file_id, range };
<a href=#332 id=332 data-nosnippet>332</a>
<a href=#333 id=333 data-nosnippet>333</a> <span class="kw">for </span><span class="kw-2">&amp;</span>after <span class="kw">in </span>afters {
<a href=#334 id=334 data-nosnippet>334</a> frange.range = analysis.extend_selection(frange).unwrap();
<a href=#335 id=335 data-nosnippet>335</a> <span class="kw">let </span>actual = <span class="kw-2">&amp;</span>before[frange.range];
<a href=#336 id=336 data-nosnippet>336</a> <span class="macro">assert_eq!</span>(after, actual);
<a href=#337 id=337 data-nosnippet>337</a> }
<a href=#338 id=338 data-nosnippet>338</a> }
<a href=#339 id=339 data-nosnippet>339</a>
<a href=#340 id=340 data-nosnippet>340</a> <span class="attr">#[test]
<a href=#341 id=341 data-nosnippet>341</a> </span><span class="kw">fn </span>test_extend_selection_arith() {
<a href=#342 id=342 data-nosnippet>342</a> do_check(<span class="string">r#"fn foo() { $01 + 1 }"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"1"</span>, <span class="string">"1 + 1"</span>, <span class="string">"{ 1 + 1 }"</span>]);
<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> <span class="attr">#[test]
<a href=#346 id=346 data-nosnippet>346</a> </span><span class="kw">fn </span>test_extend_selection_list() {
<a href=#347 id=347 data-nosnippet>347</a> do_check(<span class="string">r#"fn foo($0x: i32) {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"x"</span>, <span class="string">"x: i32"</span>]);
<a href=#348 id=348 data-nosnippet>348</a> do_check(<span class="string">r#"fn foo($0x: i32, y: i32) {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"x"</span>, <span class="string">"x: i32"</span>, <span class="string">"x: i32, "</span>]);
<a href=#349 id=349 data-nosnippet>349</a> do_check(<span class="string">r#"fn foo($0x: i32,y: i32) {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"x"</span>, <span class="string">"x: i32"</span>, <span class="string">"x: i32,"</span>, <span class="string">"(x: i32,y: i32)"</span>]);
<a href=#350 id=350 data-nosnippet>350</a> do_check(<span class="string">r#"fn foo(x: i32, $0y: i32) {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"y"</span>, <span class="string">"y: i32"</span>, <span class="string">", y: i32"</span>]);
<a href=#351 id=351 data-nosnippet>351</a> do_check(<span class="string">r#"fn foo(x: i32, $0y: i32, ) {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"y"</span>, <span class="string">"y: i32"</span>, <span class="string">"y: i32, "</span>]);
<a href=#352 id=352 data-nosnippet>352</a> do_check(<span class="string">r#"fn foo(x: i32,$0y: i32) {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"y"</span>, <span class="string">"y: i32"</span>, <span class="string">",y: i32"</span>]);
<a href=#353 id=353 data-nosnippet>353</a>
<a href=#354 id=354 data-nosnippet>354</a> do_check(<span class="string">r#"const FOO: [usize; 2] = [ 22$0 , 33];"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"22"</span>, <span class="string">"22 , "</span>]);
<a href=#355 id=355 data-nosnippet>355</a> do_check(<span class="string">r#"const FOO: [usize; 2] = [ 22 , 33$0];"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"33"</span>, <span class="string">", 33"</span>]);
<a href=#356 id=356 data-nosnippet>356</a> do_check(<span class="string">r#"const FOO: [usize; 2] = [ 22 , 33$0 ,];"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"33"</span>, <span class="string">"33 ,"</span>, <span class="string">"[ 22 , 33 ,]"</span>]);
<a href=#357 id=357 data-nosnippet>357</a>
<a href=#358 id=358 data-nosnippet>358</a> do_check(<span class="string">r#"fn main() { (1, 2$0) }"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"2"</span>, <span class="string">", 2"</span>, <span class="string">"(1, 2)"</span>]);
<a href=#359 id=359 data-nosnippet>359</a>
<a href=#360 id=360 data-nosnippet>360</a> do_check(
<a href=#361 id=361 data-nosnippet>361</a> <span class="string">r#"
<a href=#362 id=362 data-nosnippet>362</a>const FOO: [usize; 2] = [
<a href=#363 id=363 data-nosnippet>363</a> 22,
<a href=#364 id=364 data-nosnippet>364</a> $033,
<a href=#365 id=365 data-nosnippet>365</a>]"#</span>,
<a href=#366 id=366 data-nosnippet>366</a> <span class="kw-2">&amp;</span>[<span class="string">"33"</span>, <span class="string">"33,"</span>],
<a href=#367 id=367 data-nosnippet>367</a> );
<a href=#368 id=368 data-nosnippet>368</a>
<a href=#369 id=369 data-nosnippet>369</a> do_check(
<a href=#370 id=370 data-nosnippet>370</a> <span class="string">r#"
<a href=#371 id=371 data-nosnippet>371</a>const FOO: [usize; 2] = [
<a href=#372 id=372 data-nosnippet>372</a> 22
<a href=#373 id=373 data-nosnippet>373</a> , 33$0,
<a href=#374 id=374 data-nosnippet>374</a>]"#</span>,
<a href=#375 id=375 data-nosnippet>375</a> <span class="kw-2">&amp;</span>[<span class="string">"33"</span>, <span class="string">"33,"</span>],
<a href=#376 id=376 data-nosnippet>376</a> );
<a href=#377 id=377 data-nosnippet>377</a> }
<a href=#378 id=378 data-nosnippet>378</a>
<a href=#379 id=379 data-nosnippet>379</a> <span class="attr">#[test]
<a href=#380 id=380 data-nosnippet>380</a> </span><span class="kw">fn </span>test_extend_selection_start_of_the_line() {
<a href=#381 id=381 data-nosnippet>381</a> do_check(
<a href=#382 id=382 data-nosnippet>382</a> <span class="string">r#"
<a href=#383 id=383 data-nosnippet>383</a>impl S {
<a href=#384 id=384 data-nosnippet>384</a>$0 fn foo() {
<a href=#385 id=385 data-nosnippet>385</a>
<a href=#386 id=386 data-nosnippet>386</a> }
<a href=#387 id=387 data-nosnippet>387</a>}"#</span>,
<a href=#388 id=388 data-nosnippet>388</a> <span class="kw-2">&amp;</span>[<span class="string">" fn foo() {\n\n }\n"</span>],
<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>
<a href=#392 id=392 data-nosnippet>392</a> <span class="attr">#[test]
<a href=#393 id=393 data-nosnippet>393</a> </span><span class="kw">fn </span>test_extend_selection_doc_comments() {
<a href=#394 id=394 data-nosnippet>394</a> do_check(
<a href=#395 id=395 data-nosnippet>395</a> <span class="string">r#"
<a href=#396 id=396 data-nosnippet>396</a>struct A;
<a href=#397 id=397 data-nosnippet>397</a>
<a href=#398 id=398 data-nosnippet>398</a>/// bla
<a href=#399 id=399 data-nosnippet>399</a>/// bla
<a href=#400 id=400 data-nosnippet>400</a>struct B {
<a href=#401 id=401 data-nosnippet>401</a> $0
<a href=#402 id=402 data-nosnippet>402</a>}
<a href=#403 id=403 data-nosnippet>403</a> "#</span>,
<a href=#404 id=404 data-nosnippet>404</a> <span class="kw-2">&amp;</span>[<span class="string">"\n \n"</span>, <span class="string">"{\n \n}"</span>, <span class="string">"/// bla\n/// bla\nstruct B {\n \n}"</span>],
<a href=#405 id=405 data-nosnippet>405</a> )
<a href=#406 id=406 data-nosnippet>406</a> }
<a href=#407 id=407 data-nosnippet>407</a>
<a href=#408 id=408 data-nosnippet>408</a> <span class="attr">#[test]
<a href=#409 id=409 data-nosnippet>409</a> </span><span class="kw">fn </span>test_extend_selection_comments() {
<a href=#410 id=410 data-nosnippet>410</a> do_check(
<a href=#411 id=411 data-nosnippet>411</a> <span class="string">r#"
<a href=#412 id=412 data-nosnippet>412</a>fn bar(){}
<a href=#413 id=413 data-nosnippet>413</a>
<a href=#414 id=414 data-nosnippet>414</a>// fn foo() {
<a href=#415 id=415 data-nosnippet>415</a>// 1 + $01
<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>// fn foo(){}
<a href=#419 id=419 data-nosnippet>419</a> "#</span>,
<a href=#420 id=420 data-nosnippet>420</a> <span class="kw-2">&amp;</span>[<span class="string">"1"</span>, <span class="string">"// 1 + 1"</span>, <span class="string">"// fn foo() {\n// 1 + 1\n// }"</span>],
<a href=#421 id=421 data-nosnippet>421</a> );
<a href=#422 id=422 data-nosnippet>422</a>
<a href=#423 id=423 data-nosnippet>423</a> do_check(
<a href=#424 id=424 data-nosnippet>424</a> <span class="string">r#"
<a href=#425 id=425 data-nosnippet>425</a>// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
<a href=#426 id=426 data-nosnippet>426</a>// pub enum Direction {
<a href=#427 id=427 data-nosnippet>427</a>// $0 Next,
<a href=#428 id=428 data-nosnippet>428</a>// Prev
<a href=#429 id=429 data-nosnippet>429</a>// }
<a href=#430 id=430 data-nosnippet>430</a>"#</span>,
<a href=#431 id=431 data-nosnippet>431</a> <span class="kw-2">&amp;</span>[
<a href=#432 id=432 data-nosnippet>432</a> <span class="string">"// Next,"</span>,
<a href=#433 id=433 data-nosnippet>433</a> <span class="string">"// #[derive(Debug, Clone, Copy, PartialEq, Eq)]\n// pub enum Direction {\n// Next,\n// Prev\n// }"</span>,
<a href=#434 id=434 data-nosnippet>434</a> ],
<a href=#435 id=435 data-nosnippet>435</a> );
<a href=#436 id=436 data-nosnippet>436</a>
<a href=#437 id=437 data-nosnippet>437</a> do_check(
<a href=#438 id=438 data-nosnippet>438</a> <span class="string">r#"
<a href=#439 id=439 data-nosnippet>439</a>/*
<a href=#440 id=440 data-nosnippet>440</a>foo
<a href=#441 id=441 data-nosnippet>441</a>_bar1$0*/
<a href=#442 id=442 data-nosnippet>442</a>"#</span>,
<a href=#443 id=443 data-nosnippet>443</a> <span class="kw-2">&amp;</span>[<span class="string">"_bar1"</span>, <span class="string">"/*\nfoo\n_bar1*/"</span>],
<a href=#444 id=444 data-nosnippet>444</a> );
<a href=#445 id=445 data-nosnippet>445</a>
<a href=#446 id=446 data-nosnippet>446</a> do_check(<span class="string">r#"//!$0foo_2 bar"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"foo_2"</span>, <span class="string">"//!foo_2 bar"</span>]);
<a href=#447 id=447 data-nosnippet>447</a>
<a href=#448 id=448 data-nosnippet>448</a> do_check(<span class="string">r#"/$0/foo bar"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"//foo bar"</span>]);
<a href=#449 id=449 data-nosnippet>449</a> }
<a href=#450 id=450 data-nosnippet>450</a>
<a href=#451 id=451 data-nosnippet>451</a> <span class="attr">#[test]
<a href=#452 id=452 data-nosnippet>452</a> </span><span class="kw">fn </span>test_extend_selection_prefer_idents() {
<a href=#453 id=453 data-nosnippet>453</a> do_check(
<a href=#454 id=454 data-nosnippet>454</a> <span class="string">r#"
<a href=#455 id=455 data-nosnippet>455</a>fn main() { foo$0+bar;}
<a href=#456 id=456 data-nosnippet>456</a>"#</span>,
<a href=#457 id=457 data-nosnippet>457</a> <span class="kw-2">&amp;</span>[<span class="string">"foo"</span>, <span class="string">"foo+bar"</span>],
<a href=#458 id=458 data-nosnippet>458</a> );
<a href=#459 id=459 data-nosnippet>459</a> do_check(
<a href=#460 id=460 data-nosnippet>460</a> <span class="string">r#"
<a href=#461 id=461 data-nosnippet>461</a>fn main() { foo+$0bar;}
<a href=#462 id=462 data-nosnippet>462</a>"#</span>,
<a href=#463 id=463 data-nosnippet>463</a> <span class="kw-2">&amp;</span>[<span class="string">"bar"</span>, <span class="string">"foo+bar"</span>],
<a href=#464 id=464 data-nosnippet>464</a> );
<a href=#465 id=465 data-nosnippet>465</a> }
<a href=#466 id=466 data-nosnippet>466</a>
<a href=#467 id=467 data-nosnippet>467</a> <span class="attr">#[test]
<a href=#468 id=468 data-nosnippet>468</a> </span><span class="kw">fn </span>test_extend_selection_prefer_lifetimes() {
<a href=#469 id=469 data-nosnippet>469</a> do_check(<span class="string">r#"fn foo&lt;$0'a&gt;() {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"'a"</span>, <span class="string">"&lt;'a&gt;"</span>]);
<a href=#470 id=470 data-nosnippet>470</a> do_check(<span class="string">r#"fn foo&lt;'a$0&gt;() {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"'a"</span>, <span class="string">"&lt;'a&gt;"</span>]);
<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="attr">#[test]
<a href=#474 id=474 data-nosnippet>474</a> </span><span class="kw">fn </span>test_extend_selection_select_first_word() {
<a href=#475 id=475 data-nosnippet>475</a> do_check(<span class="string">r#"// foo bar b$0az quxx"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"baz"</span>, <span class="string">"// foo bar baz quxx"</span>]);
<a href=#476 id=476 data-nosnippet>476</a> do_check(
<a href=#477 id=477 data-nosnippet>477</a> <span class="string">r#"
<a href=#478 id=478 data-nosnippet>478</a>impl S {
<a href=#479 id=479 data-nosnippet>479</a>fn foo() {
<a href=#480 id=480 data-nosnippet>480</a>// hel$0lo world
<a href=#481 id=481 data-nosnippet>481</a>}
<a href=#482 id=482 data-nosnippet>482</a>}
<a href=#483 id=483 data-nosnippet>483</a>"#</span>,
<a href=#484 id=484 data-nosnippet>484</a> <span class="kw-2">&amp;</span>[<span class="string">"hello"</span>, <span class="string">"// hello world"</span>],
<a href=#485 id=485 data-nosnippet>485</a> );
<a href=#486 id=486 data-nosnippet>486</a> }
<a href=#487 id=487 data-nosnippet>487</a>
<a href=#488 id=488 data-nosnippet>488</a> <span class="attr">#[test]
<a href=#489 id=489 data-nosnippet>489</a> </span><span class="kw">fn </span>test_extend_selection_string() {
<a href=#490 id=490 data-nosnippet>490</a> do_check(
<a href=#491 id=491 data-nosnippet>491</a> <span class="string">r#"
<a href=#492 id=492 data-nosnippet>492</a>fn bar(){}
<a href=#493 id=493 data-nosnippet>493</a>
<a href=#494 id=494 data-nosnippet>494</a>" fn f$0oo() {"
<a href=#495 id=495 data-nosnippet>495</a>"#</span>,
<a href=#496 id=496 data-nosnippet>496</a> <span class="kw-2">&amp;</span>[<span class="string">"foo"</span>, <span class="string">"\" fn foo() {\""</span>],
<a href=#497 id=497 data-nosnippet>497</a> );
<a href=#498 id=498 data-nosnippet>498</a> }
<a href=#499 id=499 data-nosnippet>499</a>
<a href=#500 id=500 data-nosnippet>500</a> <span class="attr">#[test]
<a href=#501 id=501 data-nosnippet>501</a> </span><span class="kw">fn </span>test_extend_trait_bounds_list_in_where_clause() {
<a href=#502 id=502 data-nosnippet>502</a> do_check(
<a href=#503 id=503 data-nosnippet>503</a> <span class="string">r#"
<a href=#504 id=504 data-nosnippet>504</a>fn foo&lt;R&gt;()
<a href=#505 id=505 data-nosnippet>505</a> where
<a href=#506 id=506 data-nosnippet>506</a> R: req::Request + 'static,
<a href=#507 id=507 data-nosnippet>507</a> R::Params: DeserializeOwned$0 + panic::UnwindSafe + 'static,
<a href=#508 id=508 data-nosnippet>508</a> R::Result: Serialize + 'static,
<a href=#509 id=509 data-nosnippet>509</a>"#</span>,
<a href=#510 id=510 data-nosnippet>510</a> <span class="kw-2">&amp;</span>[
<a href=#511 id=511 data-nosnippet>511</a> <span class="string">"DeserializeOwned"</span>,
<a href=#512 id=512 data-nosnippet>512</a> <span class="string">"DeserializeOwned + "</span>,
<a href=#513 id=513 data-nosnippet>513</a> <span class="string">"DeserializeOwned + panic::UnwindSafe + 'static"</span>,
<a href=#514 id=514 data-nosnippet>514</a> <span class="string">"R::Params: DeserializeOwned + panic::UnwindSafe + 'static"</span>,
<a href=#515 id=515 data-nosnippet>515</a> <span class="string">"R::Params: DeserializeOwned + panic::UnwindSafe + 'static,"</span>,
<a href=#516 id=516 data-nosnippet>516</a> ],
<a href=#517 id=517 data-nosnippet>517</a> );
<a href=#518 id=518 data-nosnippet>518</a> do_check(<span class="string">r#"fn foo&lt;T&gt;() where T: $0Copy"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Copy"</span>]);
<a href=#519 id=519 data-nosnippet>519</a> do_check(<span class="string">r#"fn foo&lt;T&gt;() where T: $0Copy + Display"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Copy"</span>, <span class="string">"Copy + "</span>]);
<a href=#520 id=520 data-nosnippet>520</a> do_check(<span class="string">r#"fn foo&lt;T&gt;() where T: $0Copy +Display"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Copy"</span>, <span class="string">"Copy +"</span>]);
<a href=#521 id=521 data-nosnippet>521</a> do_check(<span class="string">r#"fn foo&lt;T&gt;() where T: $0Copy+Display"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Copy"</span>, <span class="string">"Copy+"</span>]);
<a href=#522 id=522 data-nosnippet>522</a> do_check(<span class="string">r#"fn foo&lt;T&gt;() where T: Copy + $0Display"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Display"</span>, <span class="string">"+ Display"</span>]);
<a href=#523 id=523 data-nosnippet>523</a> do_check(<span class="string">r#"fn foo&lt;T&gt;() where T: Copy + $0Display + Sync"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Display"</span>, <span class="string">"Display + "</span>]);
<a href=#524 id=524 data-nosnippet>524</a> do_check(<span class="string">r#"fn foo&lt;T&gt;() where T: Copy +$0Display"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Display"</span>, <span class="string">"+Display"</span>]);
<a href=#525 id=525 data-nosnippet>525</a> }
<a href=#526 id=526 data-nosnippet>526</a>
<a href=#527 id=527 data-nosnippet>527</a> <span class="attr">#[test]
<a href=#528 id=528 data-nosnippet>528</a> </span><span class="kw">fn </span>test_extend_trait_bounds_list_inline() {
<a href=#529 id=529 data-nosnippet>529</a> do_check(<span class="string">r#"fn foo&lt;T: $0Copy&gt;() {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Copy"</span>]);
<a href=#530 id=530 data-nosnippet>530</a> do_check(<span class="string">r#"fn foo&lt;T: $0Copy + Display&gt;() {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Copy"</span>, <span class="string">"Copy + "</span>]);
<a href=#531 id=531 data-nosnippet>531</a> do_check(<span class="string">r#"fn foo&lt;T: $0Copy +Display&gt;() {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Copy"</span>, <span class="string">"Copy +"</span>]);
<a href=#532 id=532 data-nosnippet>532</a> do_check(<span class="string">r#"fn foo&lt;T: $0Copy+Display&gt;() {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Copy"</span>, <span class="string">"Copy+"</span>]);
<a href=#533 id=533 data-nosnippet>533</a> do_check(<span class="string">r#"fn foo&lt;T: Copy + $0Display&gt;() {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Display"</span>, <span class="string">"+ Display"</span>]);
<a href=#534 id=534 data-nosnippet>534</a> do_check(<span class="string">r#"fn foo&lt;T: Copy + $0Display + Sync&gt;() {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Display"</span>, <span class="string">"Display + "</span>]);
<a href=#535 id=535 data-nosnippet>535</a> do_check(<span class="string">r#"fn foo&lt;T: Copy +$0Display&gt;() {}"#</span>, <span class="kw-2">&amp;</span>[<span class="string">"Display"</span>, <span class="string">"+Display"</span>]);
<a href=#536 id=536 data-nosnippet>536</a> do_check(
<a href=#537 id=537 data-nosnippet>537</a> <span class="string">r#"fn foo&lt;T: Copy$0 + Display, U: Copy&gt;() {}"#</span>,
<a href=#538 id=538 data-nosnippet>538</a> <span class="kw-2">&amp;</span>[
<a href=#539 id=539 data-nosnippet>539</a> <span class="string">"Copy"</span>,
<a href=#540 id=540 data-nosnippet>540</a> <span class="string">"Copy + "</span>,
<a href=#541 id=541 data-nosnippet>541</a> <span class="string">"Copy + Display"</span>,
<a href=#542 id=542 data-nosnippet>542</a> <span class="string">"T: Copy + Display"</span>,
<a href=#543 id=543 data-nosnippet>543</a> <span class="string">"T: Copy + Display, "</span>,
<a href=#544 id=544 data-nosnippet>544</a> <span class="string">"&lt;T: Copy + Display, U: Copy&gt;"</span>,
<a href=#545 id=545 data-nosnippet>545</a> ],
<a href=#546 id=546 data-nosnippet>546</a> );
<a href=#547 id=547 data-nosnippet>547</a> }
<a href=#548 id=548 data-nosnippet>548</a>
<a href=#549 id=549 data-nosnippet>549</a> <span class="attr">#[test]
<a href=#550 id=550 data-nosnippet>550</a> </span><span class="kw">fn </span>test_extend_selection_on_tuple_in_type() {
<a href=#551 id=551 data-nosnippet>551</a> do_check(
<a href=#552 id=552 data-nosnippet>552</a> <span class="string">r#"fn main() { let _: (krate, $0_crate_def_map, module_id) = (); }"#</span>,
<a href=#553 id=553 data-nosnippet>553</a> <span class="kw-2">&amp;</span>[<span class="string">"_crate_def_map"</span>, <span class="string">"_crate_def_map, "</span>, <span class="string">"(krate, _crate_def_map, module_id)"</span>],
<a href=#554 id=554 data-nosnippet>554</a> );
<a href=#555 id=555 data-nosnippet>555</a> <span class="comment">// white space variations
<a href=#556 id=556 data-nosnippet>556</a> </span>do_check(
<a href=#557 id=557 data-nosnippet>557</a> <span class="string">r#"fn main() { let _: (krate,$0_crate_def_map,module_id) = (); }"#</span>,
<a href=#558 id=558 data-nosnippet>558</a> <span class="kw-2">&amp;</span>[<span class="string">"_crate_def_map"</span>, <span class="string">"_crate_def_map,"</span>, <span class="string">"(krate,_crate_def_map,module_id)"</span>],
<a href=#559 id=559 data-nosnippet>559</a> );
<a href=#560 id=560 data-nosnippet>560</a> do_check(
<a href=#561 id=561 data-nosnippet>561</a> <span class="string">r#"
<a href=#562 id=562 data-nosnippet>562</a>fn main() { let _: (
<a href=#563 id=563 data-nosnippet>563</a> krate,
<a href=#564 id=564 data-nosnippet>564</a> _crate$0_def_map,
<a href=#565 id=565 data-nosnippet>565</a> module_id
<a href=#566 id=566 data-nosnippet>566</a>) = (); }"#</span>,
<a href=#567 id=567 data-nosnippet>567</a> <span class="kw-2">&amp;</span>[
<a href=#568 id=568 data-nosnippet>568</a> <span class="string">"_crate_def_map"</span>,
<a href=#569 id=569 data-nosnippet>569</a> <span class="string">"_crate_def_map,"</span>,
<a href=#570 id=570 data-nosnippet>570</a> <span class="string">"(\n krate,\n _crate_def_map,\n module_id\n)"</span>,
<a href=#571 id=571 data-nosnippet>571</a> ],
<a href=#572 id=572 data-nosnippet>572</a> );
<a href=#573 id=573 data-nosnippet>573</a> }
<a href=#574 id=574 data-nosnippet>574</a>
<a href=#575 id=575 data-nosnippet>575</a> <span class="attr">#[test]
<a href=#576 id=576 data-nosnippet>576</a> </span><span class="kw">fn </span>test_extend_selection_on_tuple_in_rvalue() {
<a href=#577 id=577 data-nosnippet>577</a> do_check(
<a href=#578 id=578 data-nosnippet>578</a> <span class="string">r#"fn main() { let var = (krate, _crate_def_map$0, module_id); }"#</span>,
<a href=#579 id=579 data-nosnippet>579</a> <span class="kw-2">&amp;</span>[<span class="string">"_crate_def_map"</span>, <span class="string">"_crate_def_map, "</span>, <span class="string">"(krate, _crate_def_map, module_id)"</span>],
<a href=#580 id=580 data-nosnippet>580</a> );
<a href=#581 id=581 data-nosnippet>581</a> <span class="comment">// white space variations
<a href=#582 id=582 data-nosnippet>582</a> </span>do_check(
<a href=#583 id=583 data-nosnippet>583</a> <span class="string">r#"fn main() { let var = (krate,_crate$0_def_map,module_id); }"#</span>,
<a href=#584 id=584 data-nosnippet>584</a> <span class="kw-2">&amp;</span>[<span class="string">"_crate_def_map"</span>, <span class="string">"_crate_def_map,"</span>, <span class="string">"(krate,_crate_def_map,module_id)"</span>],
<a href=#585 id=585 data-nosnippet>585</a> );
<a href=#586 id=586 data-nosnippet>586</a> do_check(
<a href=#587 id=587 data-nosnippet>587</a> <span class="string">r#"
<a href=#588 id=588 data-nosnippet>588</a>fn main() { let var = (
<a href=#589 id=589 data-nosnippet>589</a> krate,
<a href=#590 id=590 data-nosnippet>590</a> _crate_def_map$0,
<a href=#591 id=591 data-nosnippet>591</a> module_id
<a href=#592 id=592 data-nosnippet>592</a>); }"#</span>,
<a href=#593 id=593 data-nosnippet>593</a> <span class="kw-2">&amp;</span>[
<a href=#594 id=594 data-nosnippet>594</a> <span class="string">"_crate_def_map"</span>,
<a href=#595 id=595 data-nosnippet>595</a> <span class="string">"_crate_def_map,"</span>,
<a href=#596 id=596 data-nosnippet>596</a> <span class="string">"(\n krate,\n _crate_def_map,\n module_id\n)"</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> }
<a href=#600 id=600 data-nosnippet>600</a>
<a href=#601 id=601 data-nosnippet>601</a> <span class="attr">#[test]
<a href=#602 id=602 data-nosnippet>602</a> </span><span class="kw">fn </span>test_extend_selection_on_tuple_pat() {
<a href=#603 id=603 data-nosnippet>603</a> do_check(
<a href=#604 id=604 data-nosnippet>604</a> <span class="string">r#"fn main() { let (krate, _crate_def_map$0, module_id) = var; }"#</span>,
<a href=#605 id=605 data-nosnippet>605</a> <span class="kw-2">&amp;</span>[<span class="string">"_crate_def_map"</span>, <span class="string">"_crate_def_map, "</span>, <span class="string">"(krate, _crate_def_map, module_id)"</span>],
<a href=#606 id=606 data-nosnippet>606</a> );
<a href=#607 id=607 data-nosnippet>607</a> <span class="comment">// white space variations
<a href=#608 id=608 data-nosnippet>608</a> </span>do_check(
<a href=#609 id=609 data-nosnippet>609</a> <span class="string">r#"fn main() { let (krate,_crate$0_def_map,module_id) = var; }"#</span>,
<a href=#610 id=610 data-nosnippet>610</a> <span class="kw-2">&amp;</span>[<span class="string">"_crate_def_map"</span>, <span class="string">"_crate_def_map,"</span>, <span class="string">"(krate,_crate_def_map,module_id)"</span>],
<a href=#611 id=611 data-nosnippet>611</a> );
<a href=#612 id=612 data-nosnippet>612</a> do_check(
<a href=#613 id=613 data-nosnippet>613</a> <span class="string">r#"
<a href=#614 id=614 data-nosnippet>614</a>fn main() { let (
<a href=#615 id=615 data-nosnippet>615</a> krate,
<a href=#616 id=616 data-nosnippet>616</a> _crate_def_map$0,
<a href=#617 id=617 data-nosnippet>617</a> module_id
<a href=#618 id=618 data-nosnippet>618</a>) = var; }"#</span>,
<a href=#619 id=619 data-nosnippet>619</a> <span class="kw-2">&amp;</span>[
<a href=#620 id=620 data-nosnippet>620</a> <span class="string">"_crate_def_map"</span>,
<a href=#621 id=621 data-nosnippet>621</a> <span class="string">"_crate_def_map,"</span>,
<a href=#622 id=622 data-nosnippet>622</a> <span class="string">"(\n krate,\n _crate_def_map,\n module_id\n)"</span>,
<a href=#623 id=623 data-nosnippet>623</a> ],
<a href=#624 id=624 data-nosnippet>624</a> );
<a href=#625 id=625 data-nosnippet>625</a> }
<a href=#626 id=626 data-nosnippet>626</a>
<a href=#627 id=627 data-nosnippet>627</a> <span class="attr">#[test]
<a href=#628 id=628 data-nosnippet>628</a> </span><span class="kw">fn </span>extend_selection_inside_macros() {
<a href=#629 id=629 data-nosnippet>629</a> do_check(
<a href=#630 id=630 data-nosnippet>630</a> <span class="string">r#"macro_rules! foo { ($item:item) =&gt; {$item} }
<a href=#631 id=631 data-nosnippet>631</a> foo!{fn hello(na$0me:usize){}}"#</span>,
<a href=#632 id=632 data-nosnippet>632</a> <span class="kw-2">&amp;</span>[
<a href=#633 id=633 data-nosnippet>633</a> <span class="string">"name"</span>,
<a href=#634 id=634 data-nosnippet>634</a> <span class="string">"name:usize"</span>,
<a href=#635 id=635 data-nosnippet>635</a> <span class="string">"(name:usize)"</span>,
<a href=#636 id=636 data-nosnippet>636</a> <span class="string">"fn hello(name:usize){}"</span>,
<a href=#637 id=637 data-nosnippet>637</a> <span class="string">"{fn hello(name:usize){}}"</span>,
<a href=#638 id=638 data-nosnippet>638</a> <span class="string">"foo!{fn hello(name:usize){}}"</span>,
<a href=#639 id=639 data-nosnippet>639</a> ],
<a href=#640 id=640 data-nosnippet>640</a> );
<a href=#641 id=641 data-nosnippet>641</a> }
<a href=#642 id=642 data-nosnippet>642</a>
<a href=#643 id=643 data-nosnippet>643</a> <span class="attr">#[test]
<a href=#644 id=644 data-nosnippet>644</a> </span><span class="kw">fn </span>extend_selection_inside_recur_macros() {
<a href=#645 id=645 data-nosnippet>645</a> do_check(
<a href=#646 id=646 data-nosnippet>646</a> <span class="string">r#" macro_rules! foo2 { ($item:item) =&gt; {$item} }
<a href=#647 id=647 data-nosnippet>647</a> macro_rules! foo { ($item:item) =&gt; {foo2!($item);} }
<a href=#648 id=648 data-nosnippet>648</a> foo!{fn hello(na$0me:usize){}}"#</span>,
<a href=#649 id=649 data-nosnippet>649</a> <span class="kw-2">&amp;</span>[
<a href=#650 id=650 data-nosnippet>650</a> <span class="string">"name"</span>,
<a href=#651 id=651 data-nosnippet>651</a> <span class="string">"name:usize"</span>,
<a href=#652 id=652 data-nosnippet>652</a> <span class="string">"(name:usize)"</span>,
<a href=#653 id=653 data-nosnippet>653</a> <span class="string">"fn hello(name:usize){}"</span>,
<a href=#654 id=654 data-nosnippet>654</a> <span class="string">"{fn hello(name:usize){}}"</span>,
<a href=#655 id=655 data-nosnippet>655</a> <span class="string">"foo!{fn hello(name:usize){}}"</span>,
<a href=#656 id=656 data-nosnippet>656</a> ],
<a href=#657 id=657 data-nosnippet>657</a> );
<a href=#658 id=658 data-nosnippet>658</a> }
<a href=#659 id=659 data-nosnippet>659</a>
<a href=#660 id=660 data-nosnippet>660</a> <span class="attr">#[test]
<a href=#661 id=661 data-nosnippet>661</a> </span><span class="kw">fn </span>extend_selection_inside_str_with_wide_char() {
<a href=#662 id=662 data-nosnippet>662</a> <span class="comment">// should not panic
<a href=#663 id=663 data-nosnippet>663</a> </span>do_check(
<a href=#664 id=664 data-nosnippet>664</a> <span class="string">r#"fn main() { let x = "═$0═══════"; }"#</span>,
<a href=#665 id=665 data-nosnippet>665</a> <span class="kw-2">&amp;</span>[
<a href=#666 id=666 data-nosnippet>666</a> <span class="string">r#""════════""#</span>,
<a href=#667 id=667 data-nosnippet>667</a> <span class="string">r#"let x = "════════";"#</span>,
<a href=#668 id=668 data-nosnippet>668</a> <span class="string">r#"{ let x = "════════"; }"#</span>,
<a href=#669 id=669 data-nosnippet>669</a> <span class="string">r#"fn main() { let x = "════════"; }"#</span>,
<a href=#670 id=670 data-nosnippet>670</a> ],
<a href=#671 id=671 data-nosnippet>671</a> );
<a href=#672 id=672 data-nosnippet>672</a> }
<a href=#673 id=673 data-nosnippet>673</a>}
</code></pre></div></section></main></body></html>