| <!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/parsing.rs`."><title>parsing.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/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-77263533.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="ide_ssr" data-themes="" data-resource-suffix="" data-rustdoc-version="1.94.0 (4a4ef493e 2026-03-02)" data-channel="1.94.0" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-b897f86f.js" data-settings-js="settings-c38705f0.js" ><script src="../../static.files/storage-e2aeef58.js"></script><script defer src="../../static.files/src-script-813739b1.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-7bab91a1.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-ffcac47a.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">ide_ssr/</div>parsing.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-3"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="doccomment">//! This file contains code for parsing SSR rules, which look something like `foo($a) ==>> bar($b)`. |
| <a href=#2 id=2 data-nosnippet>2</a>//! We first split everything before and after the separator `==>>`. Next, both the search pattern |
| <a href=#3 id=3 data-nosnippet>3</a>//! and the replacement template get tokenized by the Rust tokenizer. Tokens are then searched for |
| <a href=#4 id=4 data-nosnippet>4</a>//! placeholders, which start with `$`. For replacement templates, this is the final form. For |
| <a href=#5 id=5 data-nosnippet>5</a>//! search patterns, we go further and parse the pattern as each kind of thing that we can match. |
| <a href=#6 id=6 data-nosnippet>6</a>//! e.g. expressions, type references etc. |
| <a href=#7 id=7 data-nosnippet>7</a></span><span class="kw">use </span>ide_db::{FxHashMap, FxHashSet}; |
| <a href=#8 id=8 data-nosnippet>8</a><span class="kw">use </span>std::{fmt::Display, str::FromStr}; |
| <a href=#9 id=9 data-nosnippet>9</a><span class="kw">use </span>syntax::{SmolStr, SyntaxKind, SyntaxNode, T}; |
| <a href=#10 id=10 data-nosnippet>10</a> |
| <a href=#11 id=11 data-nosnippet>11</a><span class="kw">use </span><span class="kw">crate</span>::errors::bail; |
| <a href=#12 id=12 data-nosnippet>12</a><span class="kw">use </span>crate::{SsrError, SsrPattern, SsrRule, fragments}; |
| <a href=#13 id=13 data-nosnippet>13</a> |
| <a href=#14 id=14 data-nosnippet>14</a><span class="attr">#[derive(Debug)] |
| <a href=#15 id=15 data-nosnippet>15</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>ParsedRule { |
| <a href=#16 id=16 data-nosnippet>16</a> <span class="kw">pub</span>(<span class="kw">crate</span>) placeholders_by_stand_in: FxHashMap<SmolStr, Placeholder>, |
| <a href=#17 id=17 data-nosnippet>17</a> <span class="kw">pub</span>(<span class="kw">crate</span>) pattern: SyntaxNode, |
| <a href=#18 id=18 data-nosnippet>18</a> <span class="kw">pub</span>(<span class="kw">crate</span>) template: <span class="prelude-ty">Option</span><SyntaxNode>, |
| <a href=#19 id=19 data-nosnippet>19</a>} |
| <a href=#20 id=20 data-nosnippet>20</a> |
| <a href=#21 id=21 data-nosnippet>21</a><span class="attr">#[derive(Debug)] |
| <a href=#22 id=22 data-nosnippet>22</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>RawPattern { |
| <a href=#23 id=23 data-nosnippet>23</a> tokens: Vec<PatternElement>, |
| <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="comment">// Part of a search or replace pattern. |
| <a href=#27 id=27 data-nosnippet>27</a></span><span class="attr">#[derive(Clone, Debug, PartialEq, Eq)] |
| <a href=#28 id=28 data-nosnippet>28</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">enum </span>PatternElement { |
| <a href=#29 id=29 data-nosnippet>29</a> Token(Token), |
| <a href=#30 id=30 data-nosnippet>30</a> Placeholder(Placeholder), |
| <a href=#31 id=31 data-nosnippet>31</a>} |
| <a href=#32 id=32 data-nosnippet>32</a> |
| <a href=#33 id=33 data-nosnippet>33</a><span class="attr">#[derive(Clone, Debug, PartialEq, Eq)] |
| <a href=#34 id=34 data-nosnippet>34</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Placeholder { |
| <a href=#35 id=35 data-nosnippet>35</a> <span class="doccomment">/// The name of this placeholder. e.g. for "$a", this would be "a" |
| <a href=#36 id=36 data-nosnippet>36</a> </span><span class="kw">pub</span>(<span class="kw">crate</span>) ident: Var, |
| <a href=#37 id=37 data-nosnippet>37</a> <span class="doccomment">/// A unique name used in place of this placeholder when we parse the pattern as Rust code. |
| <a href=#38 id=38 data-nosnippet>38</a> </span>stand_in_name: String, |
| <a href=#39 id=39 data-nosnippet>39</a> <span class="kw">pub</span>(<span class="kw">crate</span>) constraints: Vec<Constraint>, |
| <a href=#40 id=40 data-nosnippet>40</a>} |
| <a href=#41 id=41 data-nosnippet>41</a> |
| <a href=#42 id=42 data-nosnippet>42</a><span class="doccomment">/// Represents a `$var` in an SSR query. |
| <a href=#43 id=43 data-nosnippet>43</a></span><span class="attr">#[derive(Debug, Clone, PartialEq, Eq, Hash)] |
| <a href=#44 id=44 data-nosnippet>44</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Var(<span class="kw">pub</span>(<span class="kw">crate</span>) String); |
| <a href=#45 id=45 data-nosnippet>45</a> |
| <a href=#46 id=46 data-nosnippet>46</a><span class="attr">#[derive(Clone, Debug, PartialEq, Eq)] |
| <a href=#47 id=47 data-nosnippet>47</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">enum </span>Constraint { |
| <a href=#48 id=48 data-nosnippet>48</a> Kind(NodeKind), |
| <a href=#49 id=49 data-nosnippet>49</a> Not(Box<Constraint>), |
| <a href=#50 id=50 data-nosnippet>50</a>} |
| <a href=#51 id=51 data-nosnippet>51</a> |
| <a href=#52 id=52 data-nosnippet>52</a><span class="attr">#[derive(Clone, Debug, PartialEq, Eq)] |
| <a href=#53 id=53 data-nosnippet>53</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">enum </span>NodeKind { |
| <a href=#54 id=54 data-nosnippet>54</a> Literal, |
| <a href=#55 id=55 data-nosnippet>55</a>} |
| <a href=#56 id=56 data-nosnippet>56</a> |
| <a href=#57 id=57 data-nosnippet>57</a><span class="attr">#[derive(Debug, Clone, PartialEq, Eq)] |
| <a href=#58 id=58 data-nosnippet>58</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Token { |
| <a href=#59 id=59 data-nosnippet>59</a> kind: SyntaxKind, |
| <a href=#60 id=60 data-nosnippet>60</a> <span class="kw">pub</span>(<span class="kw">crate</span>) text: SmolStr, |
| <a href=#61 id=61 data-nosnippet>61</a>} |
| <a href=#62 id=62 data-nosnippet>62</a> |
| <a href=#63 id=63 data-nosnippet>63</a><span class="kw">impl </span>ParsedRule { |
| <a href=#64 id=64 data-nosnippet>64</a> <span class="kw">fn </span>new( |
| <a href=#65 id=65 data-nosnippet>65</a> pattern: <span class="kw-2">&</span>RawPattern, |
| <a href=#66 id=66 data-nosnippet>66</a> template: <span class="prelude-ty">Option</span><<span class="kw-2">&</span>RawPattern>, |
| <a href=#67 id=67 data-nosnippet>67</a> ) -> <span class="prelude-ty">Result</span><Vec<ParsedRule>, SsrError> { |
| <a href=#68 id=68 data-nosnippet>68</a> <span class="kw">let </span>raw_pattern = pattern.as_rust_code(); |
| <a href=#69 id=69 data-nosnippet>69</a> <span class="kw">let </span>raw_template = template.map(|t| t.as_rust_code()); |
| <a href=#70 id=70 data-nosnippet>70</a> <span class="kw">let </span>raw_template = raw_template.as_deref(); |
| <a href=#71 id=71 data-nosnippet>71</a> <span class="kw">let </span><span class="kw-2">mut </span>builder = RuleBuilder { |
| <a href=#72 id=72 data-nosnippet>72</a> placeholders_by_stand_in: pattern.placeholders_by_stand_in(), |
| <a href=#73 id=73 data-nosnippet>73</a> rules: Vec::new(), |
| <a href=#74 id=74 data-nosnippet>74</a> }; |
| <a href=#75 id=75 data-nosnippet>75</a> |
| <a href=#76 id=76 data-nosnippet>76</a> <span class="kw">let </span>raw_template_stmt = raw_template.map(fragments::stmt); |
| <a href=#77 id=77 data-nosnippet>77</a> <span class="kw">if let </span>raw_template_expr @ <span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(<span class="kw">_</span>)) = raw_template.map(fragments::expr) { |
| <a href=#78 id=78 data-nosnippet>78</a> builder.try_add(fragments::expr(<span class="kw-2">&</span>raw_pattern), raw_template_expr); |
| <a href=#79 id=79 data-nosnippet>79</a> } <span class="kw">else </span>{ |
| <a href=#80 id=80 data-nosnippet>80</a> builder.try_add(fragments::expr(<span class="kw-2">&</span>raw_pattern), raw_template_stmt.clone()); |
| <a href=#81 id=81 data-nosnippet>81</a> } |
| <a href=#82 id=82 data-nosnippet>82</a> builder.try_add(fragments::ty(<span class="kw-2">&</span>raw_pattern), raw_template.map(fragments::ty)); |
| <a href=#83 id=83 data-nosnippet>83</a> builder.try_add(fragments::item(<span class="kw-2">&</span>raw_pattern), raw_template.map(fragments::item)); |
| <a href=#84 id=84 data-nosnippet>84</a> builder.try_add(fragments::pat(<span class="kw-2">&</span>raw_pattern), raw_template.map(fragments::pat)); |
| <a href=#85 id=85 data-nosnippet>85</a> builder.try_add(fragments::stmt(<span class="kw-2">&</span>raw_pattern), raw_template_stmt); |
| <a href=#86 id=86 data-nosnippet>86</a> builder.build() |
| <a href=#87 id=87 data-nosnippet>87</a> } |
| <a href=#88 id=88 data-nosnippet>88</a>} |
| <a href=#89 id=89 data-nosnippet>89</a> |
| <a href=#90 id=90 data-nosnippet>90</a><span class="kw">struct </span>RuleBuilder { |
| <a href=#91 id=91 data-nosnippet>91</a> placeholders_by_stand_in: FxHashMap<SmolStr, Placeholder>, |
| <a href=#92 id=92 data-nosnippet>92</a> rules: Vec<ParsedRule>, |
| <a href=#93 id=93 data-nosnippet>93</a>} |
| <a href=#94 id=94 data-nosnippet>94</a> |
| <a href=#95 id=95 data-nosnippet>95</a><span class="kw">impl </span>RuleBuilder { |
| <a href=#96 id=96 data-nosnippet>96</a> <span class="kw">fn </span>try_add( |
| <a href=#97 id=97 data-nosnippet>97</a> <span class="kw-2">&mut </span><span class="self">self</span>, |
| <a href=#98 id=98 data-nosnippet>98</a> pattern: <span class="prelude-ty">Result</span><SyntaxNode, ()>, |
| <a href=#99 id=99 data-nosnippet>99</a> template: <span class="prelude-ty">Option</span><<span class="prelude-ty">Result</span><SyntaxNode, ()>>, |
| <a href=#100 id=100 data-nosnippet>100</a> ) { |
| <a href=#101 id=101 data-nosnippet>101</a> <span class="kw">match </span>(pattern, template) { |
| <a href=#102 id=102 data-nosnippet>102</a> (<span class="prelude-val">Ok</span>(pattern), <span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(template))) => <span class="self">self</span>.rules.push(ParsedRule { |
| <a href=#103 id=103 data-nosnippet>103</a> placeholders_by_stand_in: <span class="self">self</span>.placeholders_by_stand_in.clone(), |
| <a href=#104 id=104 data-nosnippet>104</a> pattern, |
| <a href=#105 id=105 data-nosnippet>105</a> template: <span class="prelude-val">Some</span>(template), |
| <a href=#106 id=106 data-nosnippet>106</a> }), |
| <a href=#107 id=107 data-nosnippet>107</a> (<span class="prelude-val">Ok</span>(pattern), <span class="prelude-val">None</span>) => <span class="self">self</span>.rules.push(ParsedRule { |
| <a href=#108 id=108 data-nosnippet>108</a> placeholders_by_stand_in: <span class="self">self</span>.placeholders_by_stand_in.clone(), |
| <a href=#109 id=109 data-nosnippet>109</a> pattern, |
| <a href=#110 id=110 data-nosnippet>110</a> template: <span class="prelude-val">None</span>, |
| <a href=#111 id=111 data-nosnippet>111</a> }), |
| <a href=#112 id=112 data-nosnippet>112</a> <span class="kw">_ </span>=> {} |
| <a href=#113 id=113 data-nosnippet>113</a> } |
| <a href=#114 id=114 data-nosnippet>114</a> } |
| <a href=#115 id=115 data-nosnippet>115</a> |
| <a href=#116 id=116 data-nosnippet>116</a> <span class="kw">fn </span>build(<span class="kw-2">mut </span><span class="self">self</span>) -> <span class="prelude-ty">Result</span><Vec<ParsedRule>, SsrError> { |
| <a href=#117 id=117 data-nosnippet>117</a> <span class="kw">if </span><span class="self">self</span>.rules.is_empty() { |
| <a href=#118 id=118 data-nosnippet>118</a> <span class="macro">bail!</span>(<span class="string">"Not a valid Rust expression, type, item, path or pattern"</span>); |
| <a href=#119 id=119 data-nosnippet>119</a> } |
| <a href=#120 id=120 data-nosnippet>120</a> <span class="comment">// If any rules contain paths, then we reject any rules that don't contain paths. Allowing a |
| <a href=#121 id=121 data-nosnippet>121</a> // mix leads to strange semantics, since the path-based rules only match things where the |
| <a href=#122 id=122 data-nosnippet>122</a> // path refers to semantically the same thing, whereas the non-path-based rules could match |
| <a href=#123 id=123 data-nosnippet>123</a> // anything. Specifically, if we have a rule like `foo ==>> bar` we only want to match the |
| <a href=#124 id=124 data-nosnippet>124</a> // `foo` that is in the current scope, not any `foo`. However "foo" can be parsed as a |
| <a href=#125 id=125 data-nosnippet>125</a> // pattern (IDENT_PAT -> NAME -> IDENT). Allowing such a rule through would result in |
| <a href=#126 id=126 data-nosnippet>126</a> // renaming everything called `foo` to `bar`. It'd also be slow, since without a path, we'd |
| <a href=#127 id=127 data-nosnippet>127</a> // have to use the slow-scan search mechanism. |
| <a href=#128 id=128 data-nosnippet>128</a> </span><span class="kw">if </span><span class="self">self</span>.rules.iter().any(|rule| contains_path(<span class="kw-2">&</span>rule.pattern)) { |
| <a href=#129 id=129 data-nosnippet>129</a> <span class="kw">let </span>old_len = <span class="self">self</span>.rules.len(); |
| <a href=#130 id=130 data-nosnippet>130</a> <span class="self">self</span>.rules.retain(|rule| contains_path(<span class="kw-2">&</span>rule.pattern)); |
| <a href=#131 id=131 data-nosnippet>131</a> <span class="kw">if </span><span class="self">self</span>.rules.len() < old_len { |
| <a href=#132 id=132 data-nosnippet>132</a> <span class="macro">cov_mark::hit!</span>(pattern_is_a_single_segment_path); |
| <a href=#133 id=133 data-nosnippet>133</a> } |
| <a href=#134 id=134 data-nosnippet>134</a> } |
| <a href=#135 id=135 data-nosnippet>135</a> <span class="prelude-val">Ok</span>(<span class="self">self</span>.rules) |
| <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> |
| <a href=#139 id=139 data-nosnippet>139</a><span class="doccomment">/// Returns whether there are any paths in `node`. |
| <a href=#140 id=140 data-nosnippet>140</a></span><span class="kw">fn </span>contains_path(node: <span class="kw-2">&</span>SyntaxNode) -> bool { |
| <a href=#141 id=141 data-nosnippet>141</a> node.kind() == SyntaxKind::PATH |
| <a href=#142 id=142 data-nosnippet>142</a> || node.descendants().any(|node| node.kind() == SyntaxKind::PATH) |
| <a href=#143 id=143 data-nosnippet>143</a>} |
| <a href=#144 id=144 data-nosnippet>144</a> |
| <a href=#145 id=145 data-nosnippet>145</a><span class="kw">impl </span>FromStr <span class="kw">for </span>SsrRule { |
| <a href=#146 id=146 data-nosnippet>146</a> <span class="kw">type </span><span class="prelude-val">Err </span>= SsrError; |
| <a href=#147 id=147 data-nosnippet>147</a> |
| <a href=#148 id=148 data-nosnippet>148</a> <span class="kw">fn </span>from_str(query: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><SsrRule, SsrError> { |
| <a href=#149 id=149 data-nosnippet>149</a> <span class="kw">let </span><span class="kw-2">mut </span>it = query.split(<span class="string">"==>>"</span>); |
| <a href=#150 id=150 data-nosnippet>150</a> <span class="kw">let </span>pattern = it.next().expect(<span class="string">"at least empty string"</span>).trim(); |
| <a href=#151 id=151 data-nosnippet>151</a> <span class="kw">let </span>template = it |
| <a href=#152 id=152 data-nosnippet>152</a> .next() |
| <a href=#153 id=153 data-nosnippet>153</a> .ok_or_else(|| SsrError(<span class="string">"Cannot find delimiter `==>>`"</span>.into()))<span class="question-mark">? |
| <a href=#154 id=154 data-nosnippet>154</a> </span>.trim() |
| <a href=#155 id=155 data-nosnippet>155</a> .to_owned(); |
| <a href=#156 id=156 data-nosnippet>156</a> <span class="kw">if </span>it.next().is_some() { |
| <a href=#157 id=157 data-nosnippet>157</a> <span class="kw">return </span><span class="prelude-val">Err</span>(SsrError(<span class="string">"More than one delimiter found"</span>.into())); |
| <a href=#158 id=158 data-nosnippet>158</a> } |
| <a href=#159 id=159 data-nosnippet>159</a> <span class="kw">let </span>raw_pattern = pattern.parse()<span class="question-mark">?</span>; |
| <a href=#160 id=160 data-nosnippet>160</a> <span class="kw">let </span>raw_template = template.parse()<span class="question-mark">?</span>; |
| <a href=#161 id=161 data-nosnippet>161</a> <span class="kw">let </span>parsed_rules = ParsedRule::new(<span class="kw-2">&</span>raw_pattern, <span class="prelude-val">Some</span>(<span class="kw-2">&</span>raw_template))<span class="question-mark">?</span>; |
| <a href=#162 id=162 data-nosnippet>162</a> <span class="kw">let </span>rule = SsrRule { pattern: raw_pattern, template: raw_template, parsed_rules }; |
| <a href=#163 id=163 data-nosnippet>163</a> validate_rule(<span class="kw-2">&</span>rule)<span class="question-mark">?</span>; |
| <a href=#164 id=164 data-nosnippet>164</a> <span class="prelude-val">Ok</span>(rule) |
| <a href=#165 id=165 data-nosnippet>165</a> } |
| <a href=#166 id=166 data-nosnippet>166</a>} |
| <a href=#167 id=167 data-nosnippet>167</a> |
| <a href=#168 id=168 data-nosnippet>168</a><span class="kw">impl </span>FromStr <span class="kw">for </span>RawPattern { |
| <a href=#169 id=169 data-nosnippet>169</a> <span class="kw">type </span><span class="prelude-val">Err </span>= SsrError; |
| <a href=#170 id=170 data-nosnippet>170</a> |
| <a href=#171 id=171 data-nosnippet>171</a> <span class="kw">fn </span>from_str(pattern_str: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><RawPattern, SsrError> { |
| <a href=#172 id=172 data-nosnippet>172</a> <span class="prelude-val">Ok</span>(RawPattern { tokens: parse_pattern(pattern_str)<span class="question-mark">? </span>}) |
| <a href=#173 id=173 data-nosnippet>173</a> } |
| <a href=#174 id=174 data-nosnippet>174</a>} |
| <a href=#175 id=175 data-nosnippet>175</a> |
| <a href=#176 id=176 data-nosnippet>176</a><span class="kw">impl </span>RawPattern { |
| <a href=#177 id=177 data-nosnippet>177</a> <span class="doccomment">/// Returns this search pattern as Rust source code that we can feed to the Rust parser. |
| <a href=#178 id=178 data-nosnippet>178</a> </span><span class="kw">fn </span>as_rust_code(<span class="kw-2">&</span><span class="self">self</span>) -> String { |
| <a href=#179 id=179 data-nosnippet>179</a> <span class="kw">let </span><span class="kw-2">mut </span>res = String::new(); |
| <a href=#180 id=180 data-nosnippet>180</a> <span class="kw">for </span>t <span class="kw">in </span><span class="kw-2">&</span><span class="self">self</span>.tokens { |
| <a href=#181 id=181 data-nosnippet>181</a> res.push_str(<span class="kw">match </span>t { |
| <a href=#182 id=182 data-nosnippet>182</a> PatternElement::Token(token) => token.text.as_str(), |
| <a href=#183 id=183 data-nosnippet>183</a> PatternElement::Placeholder(placeholder) => placeholder.stand_in_name.as_str(), |
| <a href=#184 id=184 data-nosnippet>184</a> }); |
| <a href=#185 id=185 data-nosnippet>185</a> } |
| <a href=#186 id=186 data-nosnippet>186</a> res |
| <a href=#187 id=187 data-nosnippet>187</a> } |
| <a href=#188 id=188 data-nosnippet>188</a> |
| <a href=#189 id=189 data-nosnippet>189</a> <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>placeholders_by_stand_in(<span class="kw-2">&</span><span class="self">self</span>) -> FxHashMap<SmolStr, Placeholder> { |
| <a href=#190 id=190 data-nosnippet>190</a> <span class="kw">let </span><span class="kw-2">mut </span>res = FxHashMap::default(); |
| <a href=#191 id=191 data-nosnippet>191</a> <span class="kw">for </span>t <span class="kw">in </span><span class="kw-2">&</span><span class="self">self</span>.tokens { |
| <a href=#192 id=192 data-nosnippet>192</a> <span class="kw">if let </span>PatternElement::Placeholder(placeholder) = t { |
| <a href=#193 id=193 data-nosnippet>193</a> res.insert(SmolStr::new(<span class="kw-2">&</span>placeholder.stand_in_name), placeholder.clone()); |
| <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> res |
| <a href=#197 id=197 data-nosnippet>197</a> } |
| <a href=#198 id=198 data-nosnippet>198</a>} |
| <a href=#199 id=199 data-nosnippet>199</a> |
| <a href=#200 id=200 data-nosnippet>200</a><span class="kw">impl </span>FromStr <span class="kw">for </span>SsrPattern { |
| <a href=#201 id=201 data-nosnippet>201</a> <span class="kw">type </span><span class="prelude-val">Err </span>= SsrError; |
| <a href=#202 id=202 data-nosnippet>202</a> |
| <a href=#203 id=203 data-nosnippet>203</a> <span class="kw">fn </span>from_str(pattern_str: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><SsrPattern, SsrError> { |
| <a href=#204 id=204 data-nosnippet>204</a> <span class="kw">let </span>raw_pattern = pattern_str.parse()<span class="question-mark">?</span>; |
| <a href=#205 id=205 data-nosnippet>205</a> <span class="kw">let </span>parsed_rules = ParsedRule::new(<span class="kw-2">&</span>raw_pattern, <span class="prelude-val">None</span>)<span class="question-mark">?</span>; |
| <a href=#206 id=206 data-nosnippet>206</a> <span class="prelude-val">Ok</span>(SsrPattern { parsed_rules }) |
| <a href=#207 id=207 data-nosnippet>207</a> } |
| <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="doccomment">/// Returns `pattern_str`, parsed as a search or replace pattern. If `remove_whitespace` is true, |
| <a href=#211 id=211 data-nosnippet>211</a>/// then any whitespace tokens will be removed, which we do for the search pattern, but not for the |
| <a href=#212 id=212 data-nosnippet>212</a>/// replace pattern. |
| <a href=#213 id=213 data-nosnippet>213</a></span><span class="kw">fn </span>parse_pattern(pattern_str: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><Vec<PatternElement>, SsrError> { |
| <a href=#214 id=214 data-nosnippet>214</a> <span class="kw">let </span><span class="kw-2">mut </span>res = Vec::new(); |
| <a href=#215 id=215 data-nosnippet>215</a> <span class="kw">let </span><span class="kw-2">mut </span>placeholder_names = FxHashSet::default(); |
| <a href=#216 id=216 data-nosnippet>216</a> <span class="kw">let </span><span class="kw-2">mut </span>tokens = tokenize(pattern_str)<span class="question-mark">?</span>.into_iter(); |
| <a href=#217 id=217 data-nosnippet>217</a> <span class="kw">while let </span><span class="prelude-val">Some</span>(token) = tokens.next() { |
| <a href=#218 id=218 data-nosnippet>218</a> <span class="kw">if </span>token.kind == <span class="macro">T!</span>[$] { |
| <a href=#219 id=219 data-nosnippet>219</a> <span class="kw">let </span>placeholder = parse_placeholder(<span class="kw-2">&mut </span>tokens)<span class="question-mark">?</span>; |
| <a href=#220 id=220 data-nosnippet>220</a> <span class="kw">if </span>!placeholder_names.insert(placeholder.ident.clone()) { |
| <a href=#221 id=221 data-nosnippet>221</a> <span class="macro">bail!</span>(<span class="string">"Placeholder `{}` repeats more than once"</span>, placeholder.ident); |
| <a href=#222 id=222 data-nosnippet>222</a> } |
| <a href=#223 id=223 data-nosnippet>223</a> res.push(PatternElement::Placeholder(placeholder)); |
| <a href=#224 id=224 data-nosnippet>224</a> } <span class="kw">else </span>{ |
| <a href=#225 id=225 data-nosnippet>225</a> res.push(PatternElement::Token(token)); |
| <a href=#226 id=226 data-nosnippet>226</a> } |
| <a href=#227 id=227 data-nosnippet>227</a> } |
| <a href=#228 id=228 data-nosnippet>228</a> <span class="prelude-val">Ok</span>(res) |
| <a href=#229 id=229 data-nosnippet>229</a>} |
| <a href=#230 id=230 data-nosnippet>230</a> |
| <a href=#231 id=231 data-nosnippet>231</a><span class="doccomment">/// Checks for errors in a rule. e.g. the replace pattern referencing placeholders that the search |
| <a href=#232 id=232 data-nosnippet>232</a>/// pattern didn't define. |
| <a href=#233 id=233 data-nosnippet>233</a></span><span class="kw">fn </span>validate_rule(rule: <span class="kw-2">&</span>SsrRule) -> <span class="prelude-ty">Result</span><(), SsrError> { |
| <a href=#234 id=234 data-nosnippet>234</a> <span class="kw">let </span><span class="kw-2">mut </span>defined_placeholders = FxHashSet::default(); |
| <a href=#235 id=235 data-nosnippet>235</a> <span class="kw">for </span>p <span class="kw">in </span><span class="kw-2">&</span>rule.pattern.tokens { |
| <a href=#236 id=236 data-nosnippet>236</a> <span class="kw">if let </span>PatternElement::Placeholder(placeholder) = p { |
| <a href=#237 id=237 data-nosnippet>237</a> defined_placeholders.insert(<span class="kw-2">&</span>placeholder.ident); |
| <a href=#238 id=238 data-nosnippet>238</a> } |
| <a href=#239 id=239 data-nosnippet>239</a> } |
| <a href=#240 id=240 data-nosnippet>240</a> <span class="kw">let </span><span class="kw-2">mut </span>undefined = Vec::new(); |
| <a href=#241 id=241 data-nosnippet>241</a> <span class="kw">for </span>p <span class="kw">in </span><span class="kw-2">&</span>rule.template.tokens { |
| <a href=#242 id=242 data-nosnippet>242</a> <span class="kw">if let </span>PatternElement::Placeholder(placeholder) = p { |
| <a href=#243 id=243 data-nosnippet>243</a> <span class="kw">if </span>!defined_placeholders.contains(<span class="kw-2">&</span>placeholder.ident) { |
| <a href=#244 id=244 data-nosnippet>244</a> undefined.push(placeholder.ident.to_string()); |
| <a href=#245 id=245 data-nosnippet>245</a> } |
| <a href=#246 id=246 data-nosnippet>246</a> <span class="kw">if </span>!placeholder.constraints.is_empty() { |
| <a href=#247 id=247 data-nosnippet>247</a> <span class="macro">bail!</span>(<span class="string">"Replacement placeholders cannot have constraints"</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> <span class="kw">if </span>!undefined.is_empty() { |
| <a href=#252 id=252 data-nosnippet>252</a> <span class="macro">bail!</span>(<span class="string">"Replacement contains undefined placeholders: {}"</span>, undefined.join(<span class="string">", "</span>)); |
| <a href=#253 id=253 data-nosnippet>253</a> } |
| <a href=#254 id=254 data-nosnippet>254</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#255 id=255 data-nosnippet>255</a>} |
| <a href=#256 id=256 data-nosnippet>256</a> |
| <a href=#257 id=257 data-nosnippet>257</a><span class="kw">fn </span>tokenize(source: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><Vec<Token>, SsrError> { |
| <a href=#258 id=258 data-nosnippet>258</a> <span class="kw">let </span>lexed = parser::LexedStr::new(parser::Edition::CURRENT, source); |
| <a href=#259 id=259 data-nosnippet>259</a> <span class="kw">if let </span><span class="prelude-val">Some</span>((<span class="kw">_</span>, first_error)) = lexed.errors().next() { |
| <a href=#260 id=260 data-nosnippet>260</a> <span class="macro">bail!</span>(<span class="string">"Failed to parse pattern: {}"</span>, first_error); |
| <a href=#261 id=261 data-nosnippet>261</a> } |
| <a href=#262 id=262 data-nosnippet>262</a> <span class="kw">let </span><span class="kw-2">mut </span>tokens: Vec<Token> = Vec::new(); |
| <a href=#263 id=263 data-nosnippet>263</a> <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..lexed.len() { |
| <a href=#264 id=264 data-nosnippet>264</a> tokens.push(Token { kind: lexed.kind(i), text: lexed.text(i).into() }); |
| <a href=#265 id=265 data-nosnippet>265</a> } |
| <a href=#266 id=266 data-nosnippet>266</a> <span class="prelude-val">Ok</span>(tokens) |
| <a href=#267 id=267 data-nosnippet>267</a>} |
| <a href=#268 id=268 data-nosnippet>268</a> |
| <a href=#269 id=269 data-nosnippet>269</a><span class="kw">fn </span>parse_placeholder(tokens: <span class="kw-2">&mut </span>std::vec::IntoIter<Token>) -> <span class="prelude-ty">Result</span><Placeholder, SsrError> { |
| <a href=#270 id=270 data-nosnippet>270</a> <span class="kw">let </span><span class="kw-2">mut </span>name = <span class="prelude-val">None</span>; |
| <a href=#271 id=271 data-nosnippet>271</a> <span class="kw">let </span><span class="kw-2">mut </span>constraints = Vec::new(); |
| <a href=#272 id=272 data-nosnippet>272</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(token) = tokens.next() { |
| <a href=#273 id=273 data-nosnippet>273</a> <span class="kw">match </span>token.kind { |
| <a href=#274 id=274 data-nosnippet>274</a> SyntaxKind::IDENT => { |
| <a href=#275 id=275 data-nosnippet>275</a> name = <span class="prelude-val">Some</span>(token.text); |
| <a href=#276 id=276 data-nosnippet>276</a> } |
| <a href=#277 id=277 data-nosnippet>277</a> <span class="macro">T!</span>[<span class="string">'{'</span>] => { |
| <a href=#278 id=278 data-nosnippet>278</a> <span class="kw">let </span>token = |
| <a href=#279 id=279 data-nosnippet>279</a> tokens.next().ok_or_else(|| SsrError::new(<span class="string">"Unexpected end of placeholder"</span>))<span class="question-mark">?</span>; |
| <a href=#280 id=280 data-nosnippet>280</a> <span class="kw">if </span>token.kind == SyntaxKind::IDENT { |
| <a href=#281 id=281 data-nosnippet>281</a> name = <span class="prelude-val">Some</span>(token.text); |
| <a href=#282 id=282 data-nosnippet>282</a> } |
| <a href=#283 id=283 data-nosnippet>283</a> <span class="kw">loop </span>{ |
| <a href=#284 id=284 data-nosnippet>284</a> <span class="kw">let </span>token = tokens |
| <a href=#285 id=285 data-nosnippet>285</a> .next() |
| <a href=#286 id=286 data-nosnippet>286</a> .ok_or_else(|| SsrError::new(<span class="string">"Placeholder is missing closing brace '}'"</span>))<span class="question-mark">?</span>; |
| <a href=#287 id=287 data-nosnippet>287</a> <span class="kw">match </span>token.kind { |
| <a href=#288 id=288 data-nosnippet>288</a> <span class="macro">T!</span>[:] => { |
| <a href=#289 id=289 data-nosnippet>289</a> constraints.push(parse_constraint(tokens)<span class="question-mark">?</span>); |
| <a href=#290 id=290 data-nosnippet>290</a> } |
| <a href=#291 id=291 data-nosnippet>291</a> <span class="macro">T!</span>[<span class="string">'}'</span>] => <span class="kw">break</span>, |
| <a href=#292 id=292 data-nosnippet>292</a> <span class="kw">_ </span>=> <span class="macro">bail!</span>(<span class="string">"Unexpected token while parsing placeholder: '{}'"</span>, token.text), |
| <a href=#293 id=293 data-nosnippet>293</a> } |
| <a href=#294 id=294 data-nosnippet>294</a> } |
| <a href=#295 id=295 data-nosnippet>295</a> } |
| <a href=#296 id=296 data-nosnippet>296</a> <span class="kw">_ </span>=> { |
| <a href=#297 id=297 data-nosnippet>297</a> <span class="macro">bail!</span>(<span class="string">"Placeholders should either be $name or ${{name:constraints}}"</span>); |
| <a href=#298 id=298 data-nosnippet>298</a> } |
| <a href=#299 id=299 data-nosnippet>299</a> } |
| <a href=#300 id=300 data-nosnippet>300</a> } |
| <a href=#301 id=301 data-nosnippet>301</a> <span class="kw">let </span>name = name.ok_or_else(|| SsrError::new(<span class="string">"Placeholder ($) with no name"</span>))<span class="question-mark">?</span>; |
| <a href=#302 id=302 data-nosnippet>302</a> <span class="prelude-val">Ok</span>(Placeholder::new(name, constraints)) |
| <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>parse_constraint(tokens: <span class="kw-2">&mut </span>std::vec::IntoIter<Token>) -> <span class="prelude-ty">Result</span><Constraint, SsrError> { |
| <a href=#306 id=306 data-nosnippet>306</a> <span class="kw">let </span>constraint_type = tokens |
| <a href=#307 id=307 data-nosnippet>307</a> .next() |
| <a href=#308 id=308 data-nosnippet>308</a> .ok_or_else(|| SsrError::new(<span class="string">"Found end of placeholder while looking for a constraint"</span>))<span class="question-mark">? |
| <a href=#309 id=309 data-nosnippet>309</a> </span>.text |
| <a href=#310 id=310 data-nosnippet>310</a> .to_string(); |
| <a href=#311 id=311 data-nosnippet>311</a> <span class="kw">match </span>constraint_type.as_str() { |
| <a href=#312 id=312 data-nosnippet>312</a> <span class="string">"kind" </span>=> { |
| <a href=#313 id=313 data-nosnippet>313</a> expect_token(tokens, <span class="string">"("</span>)<span class="question-mark">?</span>; |
| <a href=#314 id=314 data-nosnippet>314</a> <span class="kw">let </span>t = tokens.next().ok_or_else(|| { |
| <a href=#315 id=315 data-nosnippet>315</a> SsrError::new(<span class="string">"Unexpected end of constraint while looking for kind"</span>) |
| <a href=#316 id=316 data-nosnippet>316</a> })<span class="question-mark">?</span>; |
| <a href=#317 id=317 data-nosnippet>317</a> <span class="kw">if </span>t.<span class="macro">kind !</span>= SyntaxKind::IDENT { |
| <a href=#318 id=318 data-nosnippet>318</a> <span class="macro">bail!</span>(<span class="string">"Expected ident, found {:?} while parsing kind constraint"</span>, t.kind); |
| <a href=#319 id=319 data-nosnippet>319</a> } |
| <a href=#320 id=320 data-nosnippet>320</a> expect_token(tokens, <span class="string">")"</span>)<span class="question-mark">?</span>; |
| <a href=#321 id=321 data-nosnippet>321</a> <span class="prelude-val">Ok</span>(Constraint::Kind(NodeKind::from(<span class="kw-2">&</span>t.text)<span class="question-mark">?</span>)) |
| <a href=#322 id=322 data-nosnippet>322</a> } |
| <a href=#323 id=323 data-nosnippet>323</a> <span class="string">"not" </span>=> { |
| <a href=#324 id=324 data-nosnippet>324</a> expect_token(tokens, <span class="string">"("</span>)<span class="question-mark">?</span>; |
| <a href=#325 id=325 data-nosnippet>325</a> <span class="kw">let </span>sub = parse_constraint(tokens)<span class="question-mark">?</span>; |
| <a href=#326 id=326 data-nosnippet>326</a> expect_token(tokens, <span class="string">")"</span>)<span class="question-mark">?</span>; |
| <a href=#327 id=327 data-nosnippet>327</a> <span class="prelude-val">Ok</span>(Constraint::Not(Box::new(sub))) |
| <a href=#328 id=328 data-nosnippet>328</a> } |
| <a href=#329 id=329 data-nosnippet>329</a> x => <span class="macro">bail!</span>(<span class="string">"Unsupported constraint type '{}'"</span>, x), |
| <a href=#330 id=330 data-nosnippet>330</a> } |
| <a href=#331 id=331 data-nosnippet>331</a>} |
| <a href=#332 id=332 data-nosnippet>332</a> |
| <a href=#333 id=333 data-nosnippet>333</a><span class="kw">fn </span>expect_token(tokens: <span class="kw-2">&mut </span>std::vec::IntoIter<Token>, expected: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><(), SsrError> { |
| <a href=#334 id=334 data-nosnippet>334</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(t) = tokens.next() { |
| <a href=#335 id=335 data-nosnippet>335</a> <span class="kw">if </span>t.text == expected { |
| <a href=#336 id=336 data-nosnippet>336</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(()); |
| <a href=#337 id=337 data-nosnippet>337</a> } |
| <a href=#338 id=338 data-nosnippet>338</a> <span class="macro">bail!</span>(<span class="string">"Expected {} found {}"</span>, expected, t.text); |
| <a href=#339 id=339 data-nosnippet>339</a> } |
| <a href=#340 id=340 data-nosnippet>340</a> <span class="macro">bail!</span>(<span class="string">"Expected {} found end of stream"</span>, expected); |
| <a href=#341 id=341 data-nosnippet>341</a>} |
| <a href=#342 id=342 data-nosnippet>342</a> |
| <a href=#343 id=343 data-nosnippet>343</a><span class="kw">impl </span>NodeKind { |
| <a href=#344 id=344 data-nosnippet>344</a> <span class="kw">fn </span>from(name: <span class="kw-2">&</span>SmolStr) -> <span class="prelude-ty">Result</span><NodeKind, SsrError> { |
| <a href=#345 id=345 data-nosnippet>345</a> <span class="prelude-val">Ok</span>(<span class="kw">match </span>name.as_str() { |
| <a href=#346 id=346 data-nosnippet>346</a> <span class="string">"literal" </span>=> NodeKind::Literal, |
| <a href=#347 id=347 data-nosnippet>347</a> <span class="kw">_ </span>=> <span class="macro">bail!</span>(<span class="string">"Unknown node kind '{}'"</span>, name), |
| <a href=#348 id=348 data-nosnippet>348</a> }) |
| <a href=#349 id=349 data-nosnippet>349</a> } |
| <a href=#350 id=350 data-nosnippet>350</a>} |
| <a href=#351 id=351 data-nosnippet>351</a> |
| <a href=#352 id=352 data-nosnippet>352</a><span class="kw">impl </span>Placeholder { |
| <a href=#353 id=353 data-nosnippet>353</a> <span class="kw">fn </span>new(name: SmolStr, constraints: Vec<Constraint>) -> <span class="self">Self </span>{ |
| <a href=#354 id=354 data-nosnippet>354</a> <span class="self">Self </span>{ |
| <a href=#355 id=355 data-nosnippet>355</a> stand_in_name: <span class="macro">format!</span>(<span class="string">"__placeholder_{name}"</span>), |
| <a href=#356 id=356 data-nosnippet>356</a> constraints, |
| <a href=#357 id=357 data-nosnippet>357</a> ident: Var(name.to_string()), |
| <a href=#358 id=358 data-nosnippet>358</a> } |
| <a href=#359 id=359 data-nosnippet>359</a> } |
| <a href=#360 id=360 data-nosnippet>360</a>} |
| <a href=#361 id=361 data-nosnippet>361</a> |
| <a href=#362 id=362 data-nosnippet>362</a><span class="kw">impl </span>Display <span class="kw">for </span>Var { |
| <a href=#363 id=363 data-nosnippet>363</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>std::fmt::Formatter<<span class="lifetime">'_</span>>) -> std::fmt::Result { |
| <a href=#364 id=364 data-nosnippet>364</a> <span class="macro">write!</span>(f, <span class="string">"${}"</span>, <span class="self">self</span>.<span class="number">0</span>) |
| <a href=#365 id=365 data-nosnippet>365</a> } |
| <a href=#366 id=366 data-nosnippet>366</a>} |
| <a href=#367 id=367 data-nosnippet>367</a> |
| <a href=#368 id=368 data-nosnippet>368</a><span class="attr">#[cfg(test)] |
| <a href=#369 id=369 data-nosnippet>369</a></span><span class="kw">mod </span>tests { |
| <a href=#370 id=370 data-nosnippet>370</a> <span class="kw">use </span>super::<span class="kw-2">*</span>; |
| <a href=#371 id=371 data-nosnippet>371</a> |
| <a href=#372 id=372 data-nosnippet>372</a> <span class="attr">#[test] |
| <a href=#373 id=373 data-nosnippet>373</a> </span><span class="kw">fn </span>parser_happy_case() { |
| <a href=#374 id=374 data-nosnippet>374</a> <span class="kw">fn </span>token(kind: SyntaxKind, text: <span class="kw-2">&</span>str) -> PatternElement { |
| <a href=#375 id=375 data-nosnippet>375</a> PatternElement::Token(Token { kind, text: SmolStr::new(text) }) |
| <a href=#376 id=376 data-nosnippet>376</a> } |
| <a href=#377 id=377 data-nosnippet>377</a> <span class="kw">fn </span>placeholder(name: <span class="kw-2">&</span>str) -> PatternElement { |
| <a href=#378 id=378 data-nosnippet>378</a> PatternElement::Placeholder(Placeholder::new(SmolStr::new(name), Vec::new())) |
| <a href=#379 id=379 data-nosnippet>379</a> } |
| <a href=#380 id=380 data-nosnippet>380</a> <span class="kw">let </span>result: SsrRule = <span class="string">"foo($a, $b) ==>> bar($b, $a)"</span>.parse().unwrap(); |
| <a href=#381 id=381 data-nosnippet>381</a> <span class="macro">assert_eq!</span>( |
| <a href=#382 id=382 data-nosnippet>382</a> result.pattern.tokens, |
| <a href=#383 id=383 data-nosnippet>383</a> <span class="macro">vec!</span>[ |
| <a href=#384 id=384 data-nosnippet>384</a> token(SyntaxKind::IDENT, <span class="string">"foo"</span>), |
| <a href=#385 id=385 data-nosnippet>385</a> token(<span class="macro">T!</span>[<span class="string">'('</span>], <span class="string">"("</span>), |
| <a href=#386 id=386 data-nosnippet>386</a> placeholder(<span class="string">"a"</span>), |
| <a href=#387 id=387 data-nosnippet>387</a> token(<span class="macro">T!</span>[,], <span class="string">","</span>), |
| <a href=#388 id=388 data-nosnippet>388</a> token(SyntaxKind::WHITESPACE, <span class="string">" "</span>), |
| <a href=#389 id=389 data-nosnippet>389</a> placeholder(<span class="string">"b"</span>), |
| <a href=#390 id=390 data-nosnippet>390</a> token(<span class="macro">T!</span>[<span class="string">')'</span>], <span class="string">")"</span>), |
| <a href=#391 id=391 data-nosnippet>391</a> ] |
| <a href=#392 id=392 data-nosnippet>392</a> ); |
| <a href=#393 id=393 data-nosnippet>393</a> <span class="macro">assert_eq!</span>( |
| <a href=#394 id=394 data-nosnippet>394</a> result.template.tokens, |
| <a href=#395 id=395 data-nosnippet>395</a> <span class="macro">vec!</span>[ |
| <a href=#396 id=396 data-nosnippet>396</a> token(SyntaxKind::IDENT, <span class="string">"bar"</span>), |
| <a href=#397 id=397 data-nosnippet>397</a> token(<span class="macro">T!</span>[<span class="string">'('</span>], <span class="string">"("</span>), |
| <a href=#398 id=398 data-nosnippet>398</a> placeholder(<span class="string">"b"</span>), |
| <a href=#399 id=399 data-nosnippet>399</a> token(<span class="macro">T!</span>[,], <span class="string">","</span>), |
| <a href=#400 id=400 data-nosnippet>400</a> token(SyntaxKind::WHITESPACE, <span class="string">" "</span>), |
| <a href=#401 id=401 data-nosnippet>401</a> placeholder(<span class="string">"a"</span>), |
| <a href=#402 id=402 data-nosnippet>402</a> token(<span class="macro">T!</span>[<span class="string">')'</span>], <span class="string">")"</span>), |
| <a href=#403 id=403 data-nosnippet>403</a> ] |
| <a href=#404 id=404 data-nosnippet>404</a> ); |
| <a href=#405 id=405 data-nosnippet>405</a> } |
| <a href=#406 id=406 data-nosnippet>406</a>} |
| </code></pre></div></section></main></body></html> |
