| <!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-ssr/src/replacing.rs`."><title>replacing.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_ssr" 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_ssr/</div>replacing.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">//! Code for applying replacement templates for matches that have previously been found. |
| <a href=#2 id=2 data-nosnippet>2</a> |
| <a href=#3 id=3 data-nosnippet>3</a></span><span class="kw">use </span>ide_db::text_edit::TextEdit; |
| <a href=#4 id=4 data-nosnippet>4</a><span class="kw">use </span>ide_db::{FxHashMap, FxHashSet}; |
| <a href=#5 id=5 data-nosnippet>5</a><span class="kw">use </span>itertools::Itertools; |
| <a href=#6 id=6 data-nosnippet>6</a><span class="kw">use </span>parser::Edition; |
| <a href=#7 id=7 data-nosnippet>7</a><span class="kw">use </span>syntax::{ |
| <a href=#8 id=8 data-nosnippet>8</a> SyntaxElement, SyntaxKind, SyntaxNode, SyntaxToken, TextRange, TextSize, |
| <a href=#9 id=9 data-nosnippet>9</a> ast::{<span class="self">self</span>, AstNode, AstToken}, |
| <a href=#10 id=10 data-nosnippet>10</a>}; |
| <a href=#11 id=11 data-nosnippet>11</a> |
| <a href=#12 id=12 data-nosnippet>12</a><span class="kw">use </span>crate::{Match, SsrMatches, fragments, resolving::ResolvedRule}; |
| <a href=#13 id=13 data-nosnippet>13</a> |
| <a href=#14 id=14 data-nosnippet>14</a><span class="doccomment">/// Returns a text edit that will replace each match in `matches` with its corresponding replacement |
| <a href=#15 id=15 data-nosnippet>15</a>/// template. Placeholders in the template will have been substituted with whatever they matched to |
| <a href=#16 id=16 data-nosnippet>16</a>/// in the original code. |
| <a href=#17 id=17 data-nosnippet>17</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>matches_to_edit<<span class="lifetime">'db</span>>( |
| <a href=#18 id=18 data-nosnippet>18</a> db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>hir::db::ExpandDatabase, |
| <a href=#19 id=19 data-nosnippet>19</a> matches: <span class="kw-2">&</span>SsrMatches, |
| <a href=#20 id=20 data-nosnippet>20</a> file_src: <span class="kw-2">&</span>str, |
| <a href=#21 id=21 data-nosnippet>21</a> rules: <span class="kw-2">&</span>[ResolvedRule<<span class="lifetime">'db</span>>], |
| <a href=#22 id=22 data-nosnippet>22</a>) -> TextEdit { |
| <a href=#23 id=23 data-nosnippet>23</a> matches_to_edit_at_offset(db, matches, file_src, <span class="number">0</span>.into(), rules) |
| <a href=#24 id=24 data-nosnippet>24</a>} |
| <a href=#25 id=25 data-nosnippet>25</a> |
| <a href=#26 id=26 data-nosnippet>26</a><span class="kw">fn </span>matches_to_edit_at_offset<<span class="lifetime">'db</span>>( |
| <a href=#27 id=27 data-nosnippet>27</a> db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>hir::db::ExpandDatabase, |
| <a href=#28 id=28 data-nosnippet>28</a> matches: <span class="kw-2">&</span>SsrMatches, |
| <a href=#29 id=29 data-nosnippet>29</a> file_src: <span class="kw-2">&</span>str, |
| <a href=#30 id=30 data-nosnippet>30</a> relative_start: TextSize, |
| <a href=#31 id=31 data-nosnippet>31</a> rules: <span class="kw-2">&</span>[ResolvedRule<<span class="lifetime">'db</span>>], |
| <a href=#32 id=32 data-nosnippet>32</a>) -> TextEdit { |
| <a href=#33 id=33 data-nosnippet>33</a> <span class="kw">let </span><span class="kw-2">mut </span>edit_builder = TextEdit::builder(); |
| <a href=#34 id=34 data-nosnippet>34</a> <span class="kw">for </span>m <span class="kw">in </span><span class="kw-2">&</span>matches.matches { |
| <a href=#35 id=35 data-nosnippet>35</a> edit_builder.replace( |
| <a href=#36 id=36 data-nosnippet>36</a> m.range.range.checked_sub(relative_start).unwrap(), |
| <a href=#37 id=37 data-nosnippet>37</a> render_replace(db, m, file_src, rules, m.range.file_id.edition(db)), |
| <a href=#38 id=38 data-nosnippet>38</a> ); |
| <a href=#39 id=39 data-nosnippet>39</a> } |
| <a href=#40 id=40 data-nosnippet>40</a> edit_builder.finish() |
| <a href=#41 id=41 data-nosnippet>41</a>} |
| <a href=#42 id=42 data-nosnippet>42</a> |
| <a href=#43 id=43 data-nosnippet>43</a><span class="kw">struct </span>ReplacementRenderer<<span class="lifetime">'a</span>, <span class="lifetime">'db</span>> { |
| <a href=#44 id=44 data-nosnippet>44</a> db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>hir::db::ExpandDatabase, |
| <a href=#45 id=45 data-nosnippet>45</a> match_info: <span class="kw-2">&</span><span class="lifetime">'a </span>Match, |
| <a href=#46 id=46 data-nosnippet>46</a> file_src: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| <a href=#47 id=47 data-nosnippet>47</a> rules: <span class="kw-2">&</span><span class="lifetime">'a </span>[ResolvedRule<<span class="lifetime">'db</span>>], |
| <a href=#48 id=48 data-nosnippet>48</a> rule: <span class="kw-2">&</span><span class="lifetime">'a </span>ResolvedRule<<span class="lifetime">'db</span>>, |
| <a href=#49 id=49 data-nosnippet>49</a> out: String, |
| <a href=#50 id=50 data-nosnippet>50</a> <span class="comment">// Map from a range within `out` to a token in `template` that represents a placeholder. This is |
| <a href=#51 id=51 data-nosnippet>51</a> // used to validate that the generated source code doesn't split any placeholder expansions (see |
| <a href=#52 id=52 data-nosnippet>52</a> // below). |
| <a href=#53 id=53 data-nosnippet>53</a> </span>placeholder_tokens_by_range: FxHashMap<TextRange, SyntaxToken>, |
| <a href=#54 id=54 data-nosnippet>54</a> <span class="comment">// Which placeholder tokens need to be wrapped in parenthesis in order to ensure that when `out` |
| <a href=#55 id=55 data-nosnippet>55</a> // is parsed, placeholders don't get split. e.g. if a template of `$a.to_string()` results in `1 |
| <a href=#56 id=56 data-nosnippet>56</a> // + 2.to_string()` then the placeholder value `1 + 2` was split and needs parenthesis. |
| <a href=#57 id=57 data-nosnippet>57</a> </span>placeholder_tokens_requiring_parenthesis: FxHashSet<SyntaxToken>, |
| <a href=#58 id=58 data-nosnippet>58</a> edition: Edition, |
| <a href=#59 id=59 data-nosnippet>59</a>} |
| <a href=#60 id=60 data-nosnippet>60</a> |
| <a href=#61 id=61 data-nosnippet>61</a><span class="kw">fn </span>render_replace<<span class="lifetime">'db</span>>( |
| <a href=#62 id=62 data-nosnippet>62</a> db: <span class="kw-2">&</span><span class="lifetime">'db </span><span class="kw">dyn </span>hir::db::ExpandDatabase, |
| <a href=#63 id=63 data-nosnippet>63</a> match_info: <span class="kw-2">&</span>Match, |
| <a href=#64 id=64 data-nosnippet>64</a> file_src: <span class="kw-2">&</span>str, |
| <a href=#65 id=65 data-nosnippet>65</a> rules: <span class="kw-2">&</span>[ResolvedRule<<span class="lifetime">'db</span>>], |
| <a href=#66 id=66 data-nosnippet>66</a> edition: Edition, |
| <a href=#67 id=67 data-nosnippet>67</a>) -> String { |
| <a href=#68 id=68 data-nosnippet>68</a> <span class="kw">let </span>rule = <span class="kw-2">&</span>rules[match_info.rule_index]; |
| <a href=#69 id=69 data-nosnippet>69</a> <span class="kw">let </span>template = rule |
| <a href=#70 id=70 data-nosnippet>70</a> .template |
| <a href=#71 id=71 data-nosnippet>71</a> .as_ref() |
| <a href=#72 id=72 data-nosnippet>72</a> .expect(<span class="string">"You called MatchFinder::edits after calling MatchFinder::add_search_pattern"</span>); |
| <a href=#73 id=73 data-nosnippet>73</a> <span class="kw">let </span><span class="kw-2">mut </span>renderer = ReplacementRenderer { |
| <a href=#74 id=74 data-nosnippet>74</a> db, |
| <a href=#75 id=75 data-nosnippet>75</a> match_info, |
| <a href=#76 id=76 data-nosnippet>76</a> file_src, |
| <a href=#77 id=77 data-nosnippet>77</a> rules, |
| <a href=#78 id=78 data-nosnippet>78</a> rule, |
| <a href=#79 id=79 data-nosnippet>79</a> out: String::new(), |
| <a href=#80 id=80 data-nosnippet>80</a> placeholder_tokens_requiring_parenthesis: FxHashSet::default(), |
| <a href=#81 id=81 data-nosnippet>81</a> placeholder_tokens_by_range: FxHashMap::default(), |
| <a href=#82 id=82 data-nosnippet>82</a> edition, |
| <a href=#83 id=83 data-nosnippet>83</a> }; |
| <a href=#84 id=84 data-nosnippet>84</a> renderer.render_node(<span class="kw-2">&</span>template.node); |
| <a href=#85 id=85 data-nosnippet>85</a> renderer.maybe_rerender_with_extra_parenthesis(<span class="kw-2">&</span>template.node); |
| <a href=#86 id=86 data-nosnippet>86</a> <span class="kw">for </span>comment <span class="kw">in </span><span class="kw-2">&</span>match_info.ignored_comments { |
| <a href=#87 id=87 data-nosnippet>87</a> renderer.out.push_str(<span class="kw-2">&</span>comment.syntax().to_string()); |
| <a href=#88 id=88 data-nosnippet>88</a> } |
| <a href=#89 id=89 data-nosnippet>89</a> renderer.out |
| <a href=#90 id=90 data-nosnippet>90</a>} |
| <a href=#91 id=91 data-nosnippet>91</a> |
| <a href=#92 id=92 data-nosnippet>92</a><span class="kw">impl</span><<span class="lifetime">'db</span>> ReplacementRenderer<<span class="lifetime">'_</span>, <span class="lifetime">'db</span>> { |
| <a href=#93 id=93 data-nosnippet>93</a> <span class="kw">fn </span>render_node_children(<span class="kw-2">&mut </span><span class="self">self</span>, node: <span class="kw-2">&</span>SyntaxNode) { |
| <a href=#94 id=94 data-nosnippet>94</a> <span class="kw">for </span>node_or_token <span class="kw">in </span>node.children_with_tokens() { |
| <a href=#95 id=95 data-nosnippet>95</a> <span class="self">self</span>.render_node_or_token(<span class="kw-2">&</span>node_or_token); |
| <a href=#96 id=96 data-nosnippet>96</a> } |
| <a href=#97 id=97 data-nosnippet>97</a> } |
| <a href=#98 id=98 data-nosnippet>98</a> |
| <a href=#99 id=99 data-nosnippet>99</a> <span class="kw">fn </span>render_node_or_token(<span class="kw-2">&mut </span><span class="self">self</span>, node_or_token: <span class="kw-2">&</span>SyntaxElement) { |
| <a href=#100 id=100 data-nosnippet>100</a> <span class="kw">match </span>node_or_token { |
| <a href=#101 id=101 data-nosnippet>101</a> SyntaxElement::Token(token) => { |
| <a href=#102 id=102 data-nosnippet>102</a> <span class="self">self</span>.render_token(token); |
| <a href=#103 id=103 data-nosnippet>103</a> } |
| <a href=#104 id=104 data-nosnippet>104</a> SyntaxElement::Node(child_node) => { |
| <a href=#105 id=105 data-nosnippet>105</a> <span class="self">self</span>.render_node(child_node); |
| <a href=#106 id=106 data-nosnippet>106</a> } |
| <a href=#107 id=107 data-nosnippet>107</a> } |
| <a href=#108 id=108 data-nosnippet>108</a> } |
| <a href=#109 id=109 data-nosnippet>109</a> |
| <a href=#110 id=110 data-nosnippet>110</a> <span class="kw">fn </span>render_node(<span class="kw-2">&mut </span><span class="self">self</span>, node: <span class="kw-2">&</span>SyntaxNode) { |
| <a href=#111 id=111 data-nosnippet>111</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(mod_path) = <span class="self">self</span>.match_info.rendered_template_paths.get(node) { |
| <a href=#112 id=112 data-nosnippet>112</a> <span class="self">self</span>.out.push_str(<span class="kw-2">&</span>mod_path.display(<span class="self">self</span>.db, <span class="self">self</span>.edition).to_string()); |
| <a href=#113 id=113 data-nosnippet>113</a> <span class="comment">// Emit everything except for the segment's name-ref, since we already effectively |
| <a href=#114 id=114 data-nosnippet>114</a> // emitted that as part of `mod_path`. |
| <a href=#115 id=115 data-nosnippet>115</a> </span><span class="kw">if let </span><span class="prelude-val">Some</span>(path) = ast::Path::cast(node.clone()) |
| <a href=#116 id=116 data-nosnippet>116</a> && <span class="kw">let </span><span class="prelude-val">Some</span>(segment) = path.segment() |
| <a href=#117 id=117 data-nosnippet>117</a> { |
| <a href=#118 id=118 data-nosnippet>118</a> <span class="kw">for </span>node_or_token <span class="kw">in </span>segment.syntax().children_with_tokens() { |
| <a href=#119 id=119 data-nosnippet>119</a> <span class="kw">if </span>node_or_token.kind() != SyntaxKind::NAME_REF { |
| <a href=#120 id=120 data-nosnippet>120</a> <span class="self">self</span>.render_node_or_token(<span class="kw-2">&</span>node_or_token); |
| <a href=#121 id=121 data-nosnippet>121</a> } |
| <a href=#122 id=122 data-nosnippet>122</a> } |
| <a href=#123 id=123 data-nosnippet>123</a> } |
| <a href=#124 id=124 data-nosnippet>124</a> } <span class="kw">else </span>{ |
| <a href=#125 id=125 data-nosnippet>125</a> <span class="self">self</span>.render_node_children(node); |
| <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> |
| <a href=#129 id=129 data-nosnippet>129</a> <span class="kw">fn </span>render_token(<span class="kw-2">&mut </span><span class="self">self</span>, token: <span class="kw-2">&</span>SyntaxToken) { |
| <a href=#130 id=130 data-nosnippet>130</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(placeholder) = <span class="self">self</span>.rule.get_placeholder(token) { |
| <a href=#131 id=131 data-nosnippet>131</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(placeholder_value) = |
| <a href=#132 id=132 data-nosnippet>132</a> <span class="self">self</span>.match_info.placeholder_values.get(<span class="kw-2">&</span>placeholder.ident) |
| <a href=#133 id=133 data-nosnippet>133</a> { |
| <a href=#134 id=134 data-nosnippet>134</a> <span class="kw">let </span>range = <span class="kw-2">&</span>placeholder_value.range.range; |
| <a href=#135 id=135 data-nosnippet>135</a> <span class="kw">let </span><span class="kw-2">mut </span>matched_text = |
| <a href=#136 id=136 data-nosnippet>136</a> <span class="self">self</span>.file_src[usize::from(range.start())..usize::from(range.end())].to_owned(); |
| <a href=#137 id=137 data-nosnippet>137</a> <span class="comment">// If a method call is performed directly on the placeholder, then autoderef and |
| <a href=#138 id=138 data-nosnippet>138</a> // autoref will apply, so we can just substitute whatever the placeholder matched to |
| <a href=#139 id=139 data-nosnippet>139</a> // directly. If we're not applying a method call, then we need to add explicitly |
| <a href=#140 id=140 data-nosnippet>140</a> // deref and ref in order to match whatever was being done implicitly at the match |
| <a href=#141 id=141 data-nosnippet>141</a> // site. |
| <a href=#142 id=142 data-nosnippet>142</a> </span><span class="kw">if </span>!token_is_method_call_receiver(token) |
| <a href=#143 id=143 data-nosnippet>143</a> && (placeholder_value.autoderef_count > <span class="number">0 |
| <a href=#144 id=144 data-nosnippet>144</a> </span>|| placeholder_value.<span class="macro">autoref_kind !</span>= ast::SelfParamKind::Owned) |
| <a href=#145 id=145 data-nosnippet>145</a> { |
| <a href=#146 id=146 data-nosnippet>146</a> <span class="macro">cov_mark::hit!</span>(replace_autoref_autoderef_capture); |
| <a href=#147 id=147 data-nosnippet>147</a> <span class="kw">let </span>ref_kind = <span class="kw">match </span>placeholder_value.autoref_kind { |
| <a href=#148 id=148 data-nosnippet>148</a> ast::SelfParamKind::Owned => <span class="string">""</span>, |
| <a href=#149 id=149 data-nosnippet>149</a> ast::SelfParamKind::Ref => <span class="string">"&"</span>, |
| <a href=#150 id=150 data-nosnippet>150</a> ast::SelfParamKind::MutRef => <span class="string">"&mut "</span>, |
| <a href=#151 id=151 data-nosnippet>151</a> }; |
| <a href=#152 id=152 data-nosnippet>152</a> matched_text = <span class="macro">format!</span>( |
| <a href=#153 id=153 data-nosnippet>153</a> <span class="string">"{}{}{}"</span>, |
| <a href=#154 id=154 data-nosnippet>154</a> ref_kind, |
| <a href=#155 id=155 data-nosnippet>155</a> <span class="string">"*"</span>.repeat(placeholder_value.autoderef_count), |
| <a href=#156 id=156 data-nosnippet>156</a> matched_text |
| <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> <span class="kw">let </span>edit = matches_to_edit_at_offset( |
| <a href=#160 id=160 data-nosnippet>160</a> <span class="self">self</span>.db, |
| <a href=#161 id=161 data-nosnippet>161</a> <span class="kw-2">&</span>placeholder_value.inner_matches, |
| <a href=#162 id=162 data-nosnippet>162</a> <span class="self">self</span>.file_src, |
| <a href=#163 id=163 data-nosnippet>163</a> range.start(), |
| <a href=#164 id=164 data-nosnippet>164</a> <span class="self">self</span>.rules, |
| <a href=#165 id=165 data-nosnippet>165</a> ); |
| <a href=#166 id=166 data-nosnippet>166</a> <span class="kw">let </span>needs_parenthesis = |
| <a href=#167 id=167 data-nosnippet>167</a> <span class="self">self</span>.placeholder_tokens_requiring_parenthesis.contains(token); |
| <a href=#168 id=168 data-nosnippet>168</a> edit.apply(<span class="kw-2">&mut </span>matched_text); |
| <a href=#169 id=169 data-nosnippet>169</a> <span class="kw">if </span>needs_parenthesis { |
| <a href=#170 id=170 data-nosnippet>170</a> <span class="self">self</span>.out.push(<span class="string">'('</span>); |
| <a href=#171 id=171 data-nosnippet>171</a> } |
| <a href=#172 id=172 data-nosnippet>172</a> <span class="self">self</span>.placeholder_tokens_by_range.insert( |
| <a href=#173 id=173 data-nosnippet>173</a> TextRange::new( |
| <a href=#174 id=174 data-nosnippet>174</a> TextSize::of(<span class="kw-2">&</span><span class="self">self</span>.out), |
| <a href=#175 id=175 data-nosnippet>175</a> TextSize::of(<span class="kw-2">&</span><span class="self">self</span>.out) + TextSize::of(<span class="kw-2">&</span>matched_text), |
| <a href=#176 id=176 data-nosnippet>176</a> ), |
| <a href=#177 id=177 data-nosnippet>177</a> token.clone(), |
| <a href=#178 id=178 data-nosnippet>178</a> ); |
| <a href=#179 id=179 data-nosnippet>179</a> <span class="self">self</span>.out.push_str(<span class="kw-2">&</span>matched_text); |
| <a href=#180 id=180 data-nosnippet>180</a> <span class="kw">if </span>needs_parenthesis { |
| <a href=#181 id=181 data-nosnippet>181</a> <span class="self">self</span>.out.push(<span class="string">')'</span>); |
| <a href=#182 id=182 data-nosnippet>182</a> } |
| <a href=#183 id=183 data-nosnippet>183</a> } <span class="kw">else </span>{ |
| <a href=#184 id=184 data-nosnippet>184</a> <span class="comment">// We validated that all placeholder references were valid before we |
| <a href=#185 id=185 data-nosnippet>185</a> // started, so this shouldn't happen. |
| <a href=#186 id=186 data-nosnippet>186</a> </span><span class="macro">panic!</span>( |
| <a href=#187 id=187 data-nosnippet>187</a> <span class="string">"Internal error: replacement referenced unknown placeholder {}"</span>, |
| <a href=#188 id=188 data-nosnippet>188</a> placeholder.ident |
| <a href=#189 id=189 data-nosnippet>189</a> ); |
| <a href=#190 id=190 data-nosnippet>190</a> } |
| <a href=#191 id=191 data-nosnippet>191</a> } <span class="kw">else </span>{ |
| <a href=#192 id=192 data-nosnippet>192</a> <span class="self">self</span>.out.push_str(token.text()); |
| <a href=#193 id=193 data-nosnippet>193</a> } |
| <a href=#194 id=194 data-nosnippet>194</a> } |
| <a href=#195 id=195 data-nosnippet>195</a> |
| <a href=#196 id=196 data-nosnippet>196</a> <span class="comment">// Checks if the resulting code, when parsed doesn't split any placeholders due to different |
| <a href=#197 id=197 data-nosnippet>197</a> // order of operations between the search pattern and the replacement template. If any do, then |
| <a href=#198 id=198 data-nosnippet>198</a> // we rerender the template and wrap the problematic placeholders with parenthesis. |
| <a href=#199 id=199 data-nosnippet>199</a> </span><span class="kw">fn </span>maybe_rerender_with_extra_parenthesis(<span class="kw-2">&mut </span><span class="self">self</span>, template: <span class="kw-2">&</span>SyntaxNode) { |
| <a href=#200 id=200 data-nosnippet>200</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(node) = parse_as_kind(<span class="kw-2">&</span><span class="self">self</span>.out, template.kind()) { |
| <a href=#201 id=201 data-nosnippet>201</a> <span class="self">self</span>.remove_node_ranges(node); |
| <a href=#202 id=202 data-nosnippet>202</a> <span class="kw">if </span><span class="self">self</span>.placeholder_tokens_by_range.is_empty() { |
| <a href=#203 id=203 data-nosnippet>203</a> <span class="kw">return</span>; |
| <a href=#204 id=204 data-nosnippet>204</a> } |
| <a href=#205 id=205 data-nosnippet>205</a> <span class="self">self</span>.placeholder_tokens_requiring_parenthesis = |
| <a href=#206 id=206 data-nosnippet>206</a> <span class="self">self</span>.placeholder_tokens_by_range.values().cloned().collect(); |
| <a href=#207 id=207 data-nosnippet>207</a> <span class="self">self</span>.out.clear(); |
| <a href=#208 id=208 data-nosnippet>208</a> <span class="self">self</span>.render_node(template); |
| <a href=#209 id=209 data-nosnippet>209</a> } |
| <a href=#210 id=210 data-nosnippet>210</a> } |
| <a href=#211 id=211 data-nosnippet>211</a> |
| <a href=#212 id=212 data-nosnippet>212</a> <span class="kw">fn </span>remove_node_ranges(<span class="kw-2">&mut </span><span class="self">self</span>, node: SyntaxNode) { |
| <a href=#213 id=213 data-nosnippet>213</a> <span class="self">self</span>.placeholder_tokens_by_range.remove(<span class="kw-2">&</span>node.text_range()); |
| <a href=#214 id=214 data-nosnippet>214</a> <span class="kw">for </span>child <span class="kw">in </span>node.children() { |
| <a href=#215 id=215 data-nosnippet>215</a> <span class="self">self</span>.remove_node_ranges(child); |
| <a href=#216 id=216 data-nosnippet>216</a> } |
| <a href=#217 id=217 data-nosnippet>217</a> } |
| <a href=#218 id=218 data-nosnippet>218</a>} |
| <a href=#219 id=219 data-nosnippet>219</a> |
| <a href=#220 id=220 data-nosnippet>220</a><span class="doccomment">/// Returns whether token is the receiver of a method call. Note, being within the receiver of a |
| <a href=#221 id=221 data-nosnippet>221</a>/// method call doesn't count. e.g. if the token is `$a`, then `$a.foo()` will return true, while |
| <a href=#222 id=222 data-nosnippet>222</a>/// `($a + $b).foo()` or `x.foo($a)` will return false. |
| <a href=#223 id=223 data-nosnippet>223</a></span><span class="kw">fn </span>token_is_method_call_receiver(token: <span class="kw-2">&</span>SyntaxToken) -> bool { |
| <a href=#224 id=224 data-nosnippet>224</a> <span class="comment">// Find the first method call among the ancestors of `token`, then check if the only token |
| <a href=#225 id=225 data-nosnippet>225</a> // within the receiver is `token`. |
| <a href=#226 id=226 data-nosnippet>226</a> </span><span class="kw">if let </span><span class="prelude-val">Some</span>(receiver) = token |
| <a href=#227 id=227 data-nosnippet>227</a> .parent_ancestors() |
| <a href=#228 id=228 data-nosnippet>228</a> .find_map(ast::MethodCallExpr::cast) |
| <a href=#229 id=229 data-nosnippet>229</a> .and_then(|call| call.receiver()) |
| <a href=#230 id=230 data-nosnippet>230</a> { |
| <a href=#231 id=231 data-nosnippet>231</a> <span class="kw">let </span>tokens = receiver.syntax().descendants_with_tokens().filter_map(|node_or_token| { |
| <a href=#232 id=232 data-nosnippet>232</a> <span class="kw">match </span>node_or_token { |
| <a href=#233 id=233 data-nosnippet>233</a> SyntaxElement::Token(t) => <span class="prelude-val">Some</span>(t), |
| <a href=#234 id=234 data-nosnippet>234</a> <span class="kw">_ </span>=> <span class="prelude-val">None</span>, |
| <a href=#235 id=235 data-nosnippet>235</a> } |
| <a href=#236 id=236 data-nosnippet>236</a> }); |
| <a href=#237 id=237 data-nosnippet>237</a> <span class="kw">if let </span><span class="prelude-val">Some</span>((only_token,)) = tokens.collect_tuple() { |
| <a href=#238 id=238 data-nosnippet>238</a> <span class="kw">return </span>only_token == <span class="kw-2">*</span>token; |
| <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="bool-val">false |
| <a href=#242 id=242 data-nosnippet>242</a></span>} |
| <a href=#243 id=243 data-nosnippet>243</a> |
| <a href=#244 id=244 data-nosnippet>244</a><span class="kw">fn </span>parse_as_kind(code: <span class="kw-2">&</span>str, kind: SyntaxKind) -> <span class="prelude-ty">Option</span><SyntaxNode> { |
| <a href=#245 id=245 data-nosnippet>245</a> <span class="kw">if </span>ast::Expr::can_cast(kind) |
| <a href=#246 id=246 data-nosnippet>246</a> && <span class="kw">let </span><span class="prelude-val">Ok</span>(expr) = fragments::expr(code) |
| <a href=#247 id=247 data-nosnippet>247</a> { |
| <a href=#248 id=248 data-nosnippet>248</a> <span class="kw">return </span><span class="prelude-val">Some</span>(expr); |
| <a href=#249 id=249 data-nosnippet>249</a> } |
| <a href=#250 id=250 data-nosnippet>250</a> <span class="kw">if </span>ast::Item::can_cast(kind) |
| <a href=#251 id=251 data-nosnippet>251</a> && <span class="kw">let </span><span class="prelude-val">Ok</span>(item) = fragments::item(code) |
| <a href=#252 id=252 data-nosnippet>252</a> { |
| <a href=#253 id=253 data-nosnippet>253</a> <span class="kw">return </span><span class="prelude-val">Some</span>(item); |
| <a href=#254 id=254 data-nosnippet>254</a> } |
| <a href=#255 id=255 data-nosnippet>255</a> <span class="prelude-val">None |
| <a href=#256 id=256 data-nosnippet>256</a></span>} |
| </code></pre></div></section></main></body></html> |
