| <!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/tt/src/lib.rs`."><title>lib.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-aa0817cf.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="tt" data-themes="" data-resource-suffix="" data-rustdoc-version="1.90.0 (1159e78c4 2025-09-14)" data-channel="1.90.0" data-search-js="search-fa3e91e5.js" data-settings-js="settings-5514c975.js" ><script src="../../static.files/storage-68b7e25d.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-eebb9057.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-32bb7600.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-6580c154.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><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">tt/</div>lib.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-4"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="doccomment">//! `tt` crate defines a `TokenTree` data structure: this is the interface (both |
| <a href=#2 id=2 data-nosnippet>2</a>//! input and output) of macros. |
| <a href=#3 id=3 data-nosnippet>3</a>//! |
| <a href=#4 id=4 data-nosnippet>4</a>//! The `TokenTree` is semantically a tree, but for performance reasons it is stored as a flat structure. |
| <a href=#5 id=5 data-nosnippet>5</a> |
| <a href=#6 id=6 data-nosnippet>6</a></span><span class="attr">#![cfg_attr(feature = <span class="string">"in-rust-tree"</span>, feature(rustc_private))] |
| <a href=#7 id=7 data-nosnippet>7</a> |
| <a href=#8 id=8 data-nosnippet>8</a>#[cfg(not(feature = <span class="string">"in-rust-tree"</span>))] |
| <a href=#9 id=9 data-nosnippet>9</a></span><span class="kw">extern crate </span>ra_ap_rustc_lexer <span class="kw">as </span>rustc_lexer; |
| <a href=#10 id=10 data-nosnippet>10</a><span class="attr">#[cfg(feature = <span class="string">"in-rust-tree"</span>)] |
| <a href=#11 id=11 data-nosnippet>11</a></span><span class="kw">extern crate </span>rustc_lexer; |
| <a href=#12 id=12 data-nosnippet>12</a> |
| <a href=#13 id=13 data-nosnippet>13</a><span class="kw">pub mod </span>buffer; |
| <a href=#14 id=14 data-nosnippet>14</a><span class="kw">pub mod </span>iter; |
| <a href=#15 id=15 data-nosnippet>15</a> |
| <a href=#16 id=16 data-nosnippet>16</a><span class="kw">use </span>std::fmt; |
| <a href=#17 id=17 data-nosnippet>17</a> |
| <a href=#18 id=18 data-nosnippet>18</a><span class="kw">use </span>buffer::Cursor; |
| <a href=#19 id=19 data-nosnippet>19</a><span class="kw">use </span>intern::Symbol; |
| <a href=#20 id=20 data-nosnippet>20</a><span class="kw">use </span>iter::{TtElement, TtIter}; |
| <a href=#21 id=21 data-nosnippet>21</a><span class="kw">use </span>stdx::{impl_from, itertools::Itertools <span class="kw">as _</span>}; |
| <a href=#22 id=22 data-nosnippet>22</a> |
| <a href=#23 id=23 data-nosnippet>23</a><span class="kw">pub use </span>text_size::{TextRange, TextSize}; |
| <a href=#24 id=24 data-nosnippet>24</a> |
| <a href=#25 id=25 data-nosnippet>25</a><span class="kw">pub const </span>MAX_GLUED_PUNCT_LEN: usize = <span class="number">3</span>; |
| <a href=#26 id=26 data-nosnippet>26</a> |
| <a href=#27 id=27 data-nosnippet>27</a><span class="attr">#[derive(Clone, PartialEq, Debug)] |
| <a href=#28 id=28 data-nosnippet>28</a></span><span class="kw">pub struct </span>Lit { |
| <a href=#29 id=29 data-nosnippet>29</a> <span class="kw">pub </span>kind: LitKind, |
| <a href=#30 id=30 data-nosnippet>30</a> <span class="kw">pub </span>symbol: Symbol, |
| <a href=#31 id=31 data-nosnippet>31</a> <span class="kw">pub </span>suffix: <span class="prelude-ty">Option</span><Symbol>, |
| <a href=#32 id=32 data-nosnippet>32</a>} |
| <a href=#33 id=33 data-nosnippet>33</a> |
| <a href=#34 id=34 data-nosnippet>34</a><span class="attr">#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)] |
| <a href=#35 id=35 data-nosnippet>35</a></span><span class="kw">pub enum </span>IdentIsRaw { |
| <a href=#36 id=36 data-nosnippet>36</a> No, |
| <a href=#37 id=37 data-nosnippet>37</a> Yes, |
| <a href=#38 id=38 data-nosnippet>38</a>} |
| <a href=#39 id=39 data-nosnippet>39</a><span class="kw">impl </span>IdentIsRaw { |
| <a href=#40 id=40 data-nosnippet>40</a> <span class="kw">pub fn </span>yes(<span class="self">self</span>) -> bool { |
| <a href=#41 id=41 data-nosnippet>41</a> <span class="macro">matches!</span>(<span class="self">self</span>, IdentIsRaw::Yes) |
| <a href=#42 id=42 data-nosnippet>42</a> } |
| <a href=#43 id=43 data-nosnippet>43</a> <span class="kw">pub fn </span>no(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <a href=#44 id=44 data-nosnippet>44</a> <span class="macro">matches!</span>(<span class="self">self</span>, IdentIsRaw::No) |
| <a href=#45 id=45 data-nosnippet>45</a> } |
| <a href=#46 id=46 data-nosnippet>46</a> <span class="kw">pub fn </span>as_str(<span class="self">self</span>) -> <span class="kw-2">&</span><span class="lifetime">'static </span>str { |
| <a href=#47 id=47 data-nosnippet>47</a> <span class="kw">match </span><span class="self">self </span>{ |
| <a href=#48 id=48 data-nosnippet>48</a> IdentIsRaw::No => <span class="string">""</span>, |
| <a href=#49 id=49 data-nosnippet>49</a> IdentIsRaw::Yes => <span class="string">"r#"</span>, |
| <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="kw">pub fn </span>split_from_symbol(sym: <span class="kw-2">&</span>str) -> (<span class="self">Self</span>, <span class="kw-2">&</span>str) { |
| <a href=#53 id=53 data-nosnippet>53</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(sym) = sym.strip_prefix(<span class="string">"r#"</span>) { |
| <a href=#54 id=54 data-nosnippet>54</a> (IdentIsRaw::Yes, sym) |
| <a href=#55 id=55 data-nosnippet>55</a> } <span class="kw">else </span>{ |
| <a href=#56 id=56 data-nosnippet>56</a> (IdentIsRaw::No, sym) |
| <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>} |
| <a href=#60 id=60 data-nosnippet>60</a> |
| <a href=#61 id=61 data-nosnippet>61</a><span class="attr">#[derive(Clone, Copy, PartialEq, Eq, Debug, Hash)] |
| <a href=#62 id=62 data-nosnippet>62</a></span><span class="kw">pub enum </span>LitKind { |
| <a href=#63 id=63 data-nosnippet>63</a> Byte, |
| <a href=#64 id=64 data-nosnippet>64</a> Char, |
| <a href=#65 id=65 data-nosnippet>65</a> Integer, <span class="comment">// e.g. `1`, `1u8`, `1f32` |
| <a href=#66 id=66 data-nosnippet>66</a> </span>Float, <span class="comment">// e.g. `1.`, `1.0`, `1e3f32` |
| <a href=#67 id=67 data-nosnippet>67</a> </span>Str, |
| <a href=#68 id=68 data-nosnippet>68</a> StrRaw(u8), <span class="comment">// raw string delimited by `n` hash symbols |
| <a href=#69 id=69 data-nosnippet>69</a> </span>ByteStr, |
| <a href=#70 id=70 data-nosnippet>70</a> ByteStrRaw(u8), <span class="comment">// raw byte string delimited by `n` hash symbols |
| <a href=#71 id=71 data-nosnippet>71</a> </span>CStr, |
| <a href=#72 id=72 data-nosnippet>72</a> CStrRaw(u8), |
| <a href=#73 id=73 data-nosnippet>73</a> <span class="prelude-val">Err</span>(()), |
| <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="attr">#[derive(Debug, Clone, PartialEq, Eq, Hash)] |
| <a href=#77 id=77 data-nosnippet>77</a></span><span class="kw">pub enum </span>TokenTree<S = u32> { |
| <a href=#78 id=78 data-nosnippet>78</a> Leaf(Leaf<S>), |
| <a href=#79 id=79 data-nosnippet>79</a> Subtree(Subtree<S>), |
| <a href=#80 id=80 data-nosnippet>80</a>} |
| <a href=#81 id=81 data-nosnippet>81</a><span class="macro">impl_from!</span>(Leaf<S>, Subtree<S> <span class="kw">for </span>TokenTree); |
| <a href=#82 id=82 data-nosnippet>82</a><span class="kw">impl</span><S: Copy> TokenTree<S> { |
| <a href=#83 id=83 data-nosnippet>83</a> <span class="kw">pub fn </span>first_span(<span class="kw-2">&</span><span class="self">self</span>) -> S { |
| <a href=#84 id=84 data-nosnippet>84</a> <span class="kw">match </span><span class="self">self </span>{ |
| <a href=#85 id=85 data-nosnippet>85</a> TokenTree::Leaf(l) => <span class="kw-2">*</span>l.span(), |
| <a href=#86 id=86 data-nosnippet>86</a> TokenTree::Subtree(s) => s.delimiter.open, |
| <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> |
| <a href=#91 id=91 data-nosnippet>91</a><span class="attr">#[derive(Debug, Clone, PartialEq, Eq, Hash)] |
| <a href=#92 id=92 data-nosnippet>92</a></span><span class="kw">pub enum </span>Leaf<S> { |
| <a href=#93 id=93 data-nosnippet>93</a> Literal(Literal<S>), |
| <a href=#94 id=94 data-nosnippet>94</a> Punct(Punct<S>), |
| <a href=#95 id=95 data-nosnippet>95</a> Ident(Ident<S>), |
| <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><span class="kw">impl</span><S> Leaf<S> { |
| <a href=#99 id=99 data-nosnippet>99</a> <span class="kw">pub fn </span>span(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>S { |
| <a href=#100 id=100 data-nosnippet>100</a> <span class="kw">match </span><span class="self">self </span>{ |
| <a href=#101 id=101 data-nosnippet>101</a> Leaf::Literal(it) => <span class="kw-2">&</span>it.span, |
| <a href=#102 id=102 data-nosnippet>102</a> Leaf::Punct(it) => <span class="kw-2">&</span>it.span, |
| <a href=#103 id=103 data-nosnippet>103</a> Leaf::Ident(it) => <span class="kw-2">&</span>it.span, |
| <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>} |
| <a href=#107 id=107 data-nosnippet>107</a><span class="macro">impl_from!</span>(Literal<S>, Punct<S>, Ident<S> <span class="kw">for </span>Leaf); |
| <a href=#108 id=108 data-nosnippet>108</a> |
| <a href=#109 id=109 data-nosnippet>109</a><span class="attr">#[derive(Debug, Clone, PartialEq, Eq, Hash)] |
| <a href=#110 id=110 data-nosnippet>110</a></span><span class="kw">pub struct </span>Subtree<S> { |
| <a href=#111 id=111 data-nosnippet>111</a> <span class="kw">pub </span>delimiter: Delimiter<S>, |
| <a href=#112 id=112 data-nosnippet>112</a> <span class="doccomment">/// Number of following token trees that belong to this subtree, excluding this subtree. |
| <a href=#113 id=113 data-nosnippet>113</a> </span><span class="kw">pub </span>len: u32, |
| <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">impl</span><S> Subtree<S> { |
| <a href=#117 id=117 data-nosnippet>117</a> <span class="kw">pub fn </span>usize_len(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <a href=#118 id=118 data-nosnippet>118</a> <span class="self">self</span>.len <span class="kw">as </span>usize |
| <a href=#119 id=119 data-nosnippet>119</a> } |
| <a href=#120 id=120 data-nosnippet>120</a>} |
| <a href=#121 id=121 data-nosnippet>121</a> |
| <a href=#122 id=122 data-nosnippet>122</a><span class="attr">#[derive(Clone, PartialEq, Eq, Hash)] |
| <a href=#123 id=123 data-nosnippet>123</a></span><span class="kw">pub struct </span>TopSubtree<S>(<span class="kw">pub </span>Box<[TokenTree<S>]>); |
| <a href=#124 id=124 data-nosnippet>124</a> |
| <a href=#125 id=125 data-nosnippet>125</a><span class="kw">impl</span><S: Copy> TopSubtree<S> { |
| <a href=#126 id=126 data-nosnippet>126</a> <span class="kw">pub fn </span>empty(span: DelimSpan<S>) -> <span class="self">Self </span>{ |
| <a href=#127 id=127 data-nosnippet>127</a> <span class="self">Self</span>(Box::new([TokenTree::Subtree(Subtree { |
| <a href=#128 id=128 data-nosnippet>128</a> delimiter: Delimiter::invisible_delim_spanned(span), |
| <a href=#129 id=129 data-nosnippet>129</a> len: <span class="number">0</span>, |
| <a href=#130 id=130 data-nosnippet>130</a> })])) |
| <a href=#131 id=131 data-nosnippet>131</a> } |
| <a href=#132 id=132 data-nosnippet>132</a> |
| <a href=#133 id=133 data-nosnippet>133</a> <span class="kw">pub fn </span>invisible_from_leaves<<span class="kw">const </span>N: usize>(delim_span: S, leaves: [Leaf<S>; N]) -> <span class="self">Self </span>{ |
| <a href=#134 id=134 data-nosnippet>134</a> <span class="kw">let </span><span class="kw-2">mut </span>builder = TopSubtreeBuilder::new(Delimiter::invisible_spanned(delim_span)); |
| <a href=#135 id=135 data-nosnippet>135</a> builder.extend(leaves); |
| <a href=#136 id=136 data-nosnippet>136</a> builder.build() |
| <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="kw">pub fn </span>from_token_trees(delimiter: Delimiter<S>, token_trees: TokenTreesView<<span class="lifetime">'_</span>, S>) -> <span class="self">Self </span>{ |
| <a href=#140 id=140 data-nosnippet>140</a> <span class="kw">let </span><span class="kw-2">mut </span>builder = TopSubtreeBuilder::new(delimiter); |
| <a href=#141 id=141 data-nosnippet>141</a> builder.extend_with_tt(token_trees); |
| <a href=#142 id=142 data-nosnippet>142</a> builder.build() |
| <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">pub fn </span>from_subtree(subtree: SubtreeView<<span class="lifetime">'_</span>, S>) -> <span class="self">Self </span>{ |
| <a href=#146 id=146 data-nosnippet>146</a> <span class="self">Self</span>(subtree.<span class="number">0</span>.into()) |
| <a href=#147 id=147 data-nosnippet>147</a> } |
| <a href=#148 id=148 data-nosnippet>148</a> |
| <a href=#149 id=149 data-nosnippet>149</a> <span class="kw">pub fn </span>view(<span class="kw-2">&</span><span class="self">self</span>) -> SubtreeView<<span class="lifetime">'_</span>, S> { |
| <a href=#150 id=150 data-nosnippet>150</a> SubtreeView::new(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>) |
| <a href=#151 id=151 data-nosnippet>151</a> } |
| <a href=#152 id=152 data-nosnippet>152</a> |
| <a href=#153 id=153 data-nosnippet>153</a> <span class="kw">pub fn </span>iter(<span class="kw-2">&</span><span class="self">self</span>) -> TtIter<<span class="lifetime">'_</span>, S> { |
| <a href=#154 id=154 data-nosnippet>154</a> <span class="self">self</span>.view().iter() |
| <a href=#155 id=155 data-nosnippet>155</a> } |
| <a href=#156 id=156 data-nosnippet>156</a> |
| <a href=#157 id=157 data-nosnippet>157</a> <span class="kw">pub fn </span>top_subtree(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>Subtree<S> { |
| <a href=#158 id=158 data-nosnippet>158</a> <span class="self">self</span>.view().top_subtree() |
| <a href=#159 id=159 data-nosnippet>159</a> } |
| <a href=#160 id=160 data-nosnippet>160</a> |
| <a href=#161 id=161 data-nosnippet>161</a> <span class="kw">pub fn </span>top_subtree_delimiter_mut(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&mut </span>Delimiter<S> { |
| <a href=#162 id=162 data-nosnippet>162</a> <span class="kw">let </span>TokenTree::Subtree(subtree) = <span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0</span>[<span class="number">0</span>] <span class="kw">else </span>{ |
| <a href=#163 id=163 data-nosnippet>163</a> <span class="macro">unreachable!</span>(<span class="string">"the first token tree is always the top subtree"</span>); |
| <a href=#164 id=164 data-nosnippet>164</a> }; |
| <a href=#165 id=165 data-nosnippet>165</a> <span class="kw-2">&mut </span>subtree.delimiter |
| <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">pub fn </span>token_trees(<span class="kw-2">&</span><span class="self">self</span>) -> TokenTreesView<<span class="lifetime">'_</span>, S> { |
| <a href=#169 id=169 data-nosnippet>169</a> <span class="self">self</span>.view().token_trees() |
| <a href=#170 id=170 data-nosnippet>170</a> } |
| <a href=#171 id=171 data-nosnippet>171</a>} |
| <a href=#172 id=172 data-nosnippet>172</a> |
| <a href=#173 id=173 data-nosnippet>173</a><span class="attr">#[derive(Debug, Clone, PartialEq, Eq, Hash)] |
| <a href=#174 id=174 data-nosnippet>174</a></span><span class="kw">pub struct </span>TopSubtreeBuilder<S> { |
| <a href=#175 id=175 data-nosnippet>175</a> unclosed_subtree_indices: Vec<usize>, |
| <a href=#176 id=176 data-nosnippet>176</a> token_trees: Vec<TokenTree<S>>, |
| <a href=#177 id=177 data-nosnippet>177</a> last_closed_subtree: <span class="prelude-ty">Option</span><usize>, |
| <a href=#178 id=178 data-nosnippet>178</a>} |
| <a href=#179 id=179 data-nosnippet>179</a> |
| <a href=#180 id=180 data-nosnippet>180</a><span class="kw">impl</span><S: Copy> TopSubtreeBuilder<S> { |
| <a href=#181 id=181 data-nosnippet>181</a> <span class="kw">pub fn </span>new(top_delimiter: Delimiter<S>) -> <span class="self">Self </span>{ |
| <a href=#182 id=182 data-nosnippet>182</a> <span class="kw">let </span><span class="kw-2">mut </span>result = <span class="self">Self </span>{ |
| <a href=#183 id=183 data-nosnippet>183</a> unclosed_subtree_indices: Vec::new(), |
| <a href=#184 id=184 data-nosnippet>184</a> token_trees: Vec::new(), |
| <a href=#185 id=185 data-nosnippet>185</a> last_closed_subtree: <span class="prelude-val">None</span>, |
| <a href=#186 id=186 data-nosnippet>186</a> }; |
| <a href=#187 id=187 data-nosnippet>187</a> <span class="kw">let </span>top_subtree = TokenTree::Subtree(Subtree { delimiter: top_delimiter, len: <span class="number">0 </span>}); |
| <a href=#188 id=188 data-nosnippet>188</a> result.token_trees.push(top_subtree); |
| <a href=#189 id=189 data-nosnippet>189</a> result |
| <a href=#190 id=190 data-nosnippet>190</a> } |
| <a href=#191 id=191 data-nosnippet>191</a> |
| <a href=#192 id=192 data-nosnippet>192</a> <span class="kw">pub fn </span>open(<span class="kw-2">&mut </span><span class="self">self</span>, delimiter_kind: DelimiterKind, open_span: S) { |
| <a href=#193 id=193 data-nosnippet>193</a> <span class="self">self</span>.unclosed_subtree_indices.push(<span class="self">self</span>.token_trees.len()); |
| <a href=#194 id=194 data-nosnippet>194</a> <span class="self">self</span>.token_trees.push(TokenTree::Subtree(Subtree { |
| <a href=#195 id=195 data-nosnippet>195</a> delimiter: Delimiter { |
| <a href=#196 id=196 data-nosnippet>196</a> open: open_span, |
| <a href=#197 id=197 data-nosnippet>197</a> close: open_span, <span class="comment">// Will be overwritten on close. |
| <a href=#198 id=198 data-nosnippet>198</a> </span>kind: delimiter_kind, |
| <a href=#199 id=199 data-nosnippet>199</a> }, |
| <a href=#200 id=200 data-nosnippet>200</a> len: <span class="number">0</span>, |
| <a href=#201 id=201 data-nosnippet>201</a> })); |
| <a href=#202 id=202 data-nosnippet>202</a> } |
| <a href=#203 id=203 data-nosnippet>203</a> |
| <a href=#204 id=204 data-nosnippet>204</a> <span class="kw">pub fn </span>close(<span class="kw-2">&mut </span><span class="self">self</span>, close_span: S) { |
| <a href=#205 id=205 data-nosnippet>205</a> <span class="kw">let </span>last_unclosed_index = <span class="self">self |
| <a href=#206 id=206 data-nosnippet>206</a> </span>.unclosed_subtree_indices |
| <a href=#207 id=207 data-nosnippet>207</a> .pop() |
| <a href=#208 id=208 data-nosnippet>208</a> .expect(<span class="string">"attempt to close a `tt::Subtree` when none is open"</span>); |
| <a href=#209 id=209 data-nosnippet>209</a> <span class="kw">let </span>subtree_len = (<span class="self">self</span>.token_trees.len() - last_unclosed_index - <span class="number">1</span>) <span class="kw">as </span>u32; |
| <a href=#210 id=210 data-nosnippet>210</a> <span class="kw">let </span>TokenTree::Subtree(subtree) = <span class="kw-2">&mut </span><span class="self">self</span>.token_trees[last_unclosed_index] <span class="kw">else </span>{ |
| <a href=#211 id=211 data-nosnippet>211</a> <span class="macro">unreachable!</span>(<span class="string">"unclosed token tree is always a subtree"</span>); |
| <a href=#212 id=212 data-nosnippet>212</a> }; |
| <a href=#213 id=213 data-nosnippet>213</a> subtree.len = subtree_len; |
| <a href=#214 id=214 data-nosnippet>214</a> subtree.delimiter.close = close_span; |
| <a href=#215 id=215 data-nosnippet>215</a> <span class="self">self</span>.last_closed_subtree = <span class="prelude-val">Some</span>(last_unclosed_index); |
| <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> <span class="doccomment">/// You cannot call this consecutively, it will only work once after close. |
| <a href=#219 id=219 data-nosnippet>219</a> </span><span class="kw">pub fn </span>remove_last_subtree_if_invisible(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <a href=#220 id=220 data-nosnippet>220</a> <span class="kw">let </span><span class="prelude-val">Some</span>(last_subtree_idx) = <span class="self">self</span>.last_closed_subtree <span class="kw">else </span>{ <span class="kw">return </span>}; |
| <a href=#221 id=221 data-nosnippet>221</a> <span class="kw">if let </span>TokenTree::Subtree(Subtree { |
| <a href=#222 id=222 data-nosnippet>222</a> delimiter: Delimiter { kind: DelimiterKind::Invisible, .. }, |
| <a href=#223 id=223 data-nosnippet>223</a> .. |
| <a href=#224 id=224 data-nosnippet>224</a> }) = <span class="self">self</span>.token_trees[last_subtree_idx] |
| <a href=#225 id=225 data-nosnippet>225</a> { |
| <a href=#226 id=226 data-nosnippet>226</a> <span class="self">self</span>.token_trees.remove(last_subtree_idx); |
| <a href=#227 id=227 data-nosnippet>227</a> <span class="self">self</span>.last_closed_subtree = <span class="prelude-val">None</span>; |
| <a href=#228 id=228 data-nosnippet>228</a> } |
| <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="kw">pub fn </span>push(<span class="kw-2">&mut </span><span class="self">self</span>, leaf: Leaf<S>) { |
| <a href=#232 id=232 data-nosnippet>232</a> <span class="self">self</span>.token_trees.push(TokenTree::Leaf(leaf)); |
| <a href=#233 id=233 data-nosnippet>233</a> } |
| <a href=#234 id=234 data-nosnippet>234</a> |
| <a href=#235 id=235 data-nosnippet>235</a> <span class="kw">pub fn </span>extend(<span class="kw-2">&mut </span><span class="self">self</span>, leaves: <span class="kw">impl </span>IntoIterator<Item = Leaf<S>>) { |
| <a href=#236 id=236 data-nosnippet>236</a> <span class="self">self</span>.token_trees.extend(leaves.into_iter().map(TokenTree::Leaf)); |
| <a href=#237 id=237 data-nosnippet>237</a> } |
| <a href=#238 id=238 data-nosnippet>238</a> |
| <a href=#239 id=239 data-nosnippet>239</a> <span class="doccomment">/// This does not check the token trees are valid, beware! |
| <a href=#240 id=240 data-nosnippet>240</a> </span><span class="kw">pub fn </span>extend_tt_dangerous(<span class="kw-2">&mut </span><span class="self">self</span>, tt: <span class="kw">impl </span>IntoIterator<Item = TokenTree<S>>) { |
| <a href=#241 id=241 data-nosnippet>241</a> <span class="self">self</span>.token_trees.extend(tt); |
| <a href=#242 id=242 data-nosnippet>242</a> } |
| <a href=#243 id=243 data-nosnippet>243</a> |
| <a href=#244 id=244 data-nosnippet>244</a> <span class="kw">pub fn </span>extend_with_tt(<span class="kw-2">&mut </span><span class="self">self</span>, tt: TokenTreesView<<span class="lifetime">'_</span>, S>) { |
| <a href=#245 id=245 data-nosnippet>245</a> <span class="self">self</span>.token_trees.extend(tt.<span class="number">0</span>.iter().cloned()); |
| <a href=#246 id=246 data-nosnippet>246</a> } |
| <a href=#247 id=247 data-nosnippet>247</a> |
| <a href=#248 id=248 data-nosnippet>248</a> <span class="doccomment">/// Like [`Self::extend_with_tt()`], but makes sure the new tokens will never be |
| <a href=#249 id=249 data-nosnippet>249</a> /// joint with whatever comes after them. |
| <a href=#250 id=250 data-nosnippet>250</a> </span><span class="kw">pub fn </span>extend_with_tt_alone(<span class="kw-2">&mut </span><span class="self">self</span>, tt: TokenTreesView<<span class="lifetime">'_</span>, S>) { |
| <a href=#251 id=251 data-nosnippet>251</a> <span class="kw">if let </span><span class="prelude-val">Some</span>((last, before_last)) = tt.<span class="number">0</span>.split_last() { |
| <a href=#252 id=252 data-nosnippet>252</a> <span class="self">self</span>.token_trees.reserve(tt.<span class="number">0</span>.len()); |
| <a href=#253 id=253 data-nosnippet>253</a> <span class="self">self</span>.token_trees.extend(before_last.iter().cloned()); |
| <a href=#254 id=254 data-nosnippet>254</a> <span class="kw">let </span>last = <span class="kw">if let </span>TokenTree::Leaf(Leaf::Punct(last)) = last { |
| <a href=#255 id=255 data-nosnippet>255</a> <span class="kw">let </span><span class="kw-2">mut </span>last = <span class="kw-2">*</span>last; |
| <a href=#256 id=256 data-nosnippet>256</a> last.spacing = Spacing::Alone; |
| <a href=#257 id=257 data-nosnippet>257</a> TokenTree::Leaf(Leaf::Punct(last)) |
| <a href=#258 id=258 data-nosnippet>258</a> } <span class="kw">else </span>{ |
| <a href=#259 id=259 data-nosnippet>259</a> last.clone() |
| <a href=#260 id=260 data-nosnippet>260</a> }; |
| <a href=#261 id=261 data-nosnippet>261</a> <span class="self">self</span>.token_trees.push(last); |
| <a href=#262 id=262 data-nosnippet>262</a> } |
| <a href=#263 id=263 data-nosnippet>263</a> } |
| <a href=#264 id=264 data-nosnippet>264</a> |
| <a href=#265 id=265 data-nosnippet>265</a> <span class="kw">pub fn </span>expected_delimiters(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw">impl </span>Iterator<Item = <span class="kw-2">&</span>Delimiter<S>> { |
| <a href=#266 id=266 data-nosnippet>266</a> <span class="self">self</span>.unclosed_subtree_indices.iter().rev().map(|<span class="kw-2">&</span>subtree_idx| { |
| <a href=#267 id=267 data-nosnippet>267</a> <span class="kw">let </span>TokenTree::Subtree(subtree) = <span class="kw-2">&</span><span class="self">self</span>.token_trees[subtree_idx] <span class="kw">else </span>{ |
| <a href=#268 id=268 data-nosnippet>268</a> <span class="macro">unreachable!</span>(<span class="string">"unclosed token tree is always a subtree"</span>) |
| <a href=#269 id=269 data-nosnippet>269</a> }; |
| <a href=#270 id=270 data-nosnippet>270</a> <span class="kw-2">&</span>subtree.delimiter |
| <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> |
| <a href=#274 id=274 data-nosnippet>274</a> <span class="doccomment">/// Builds, and remove the top subtree if it has only one subtree child. |
| <a href=#275 id=275 data-nosnippet>275</a> </span><span class="kw">pub fn </span>build_skip_top_subtree(<span class="kw-2">mut </span><span class="self">self</span>) -> TopSubtree<S> { |
| <a href=#276 id=276 data-nosnippet>276</a> <span class="kw">let </span>top_tts = TokenTreesView::new(<span class="kw-2">&</span><span class="self">self</span>.token_trees[<span class="number">1</span>..]); |
| <a href=#277 id=277 data-nosnippet>277</a> <span class="kw">match </span>top_tts.try_into_subtree() { |
| <a href=#278 id=278 data-nosnippet>278</a> <span class="prelude-val">Some</span>(<span class="kw">_</span>) => { |
| <a href=#279 id=279 data-nosnippet>279</a> <span class="macro">assert!</span>( |
| <a href=#280 id=280 data-nosnippet>280</a> <span class="self">self</span>.unclosed_subtree_indices.is_empty(), |
| <a href=#281 id=281 data-nosnippet>281</a> <span class="string">"attempt to build an unbalanced `TopSubtreeBuilder`" |
| <a href=#282 id=282 data-nosnippet>282</a> </span>); |
| <a href=#283 id=283 data-nosnippet>283</a> TopSubtree(<span class="self">self</span>.token_trees.drain(<span class="number">1</span>..).collect()) |
| <a href=#284 id=284 data-nosnippet>284</a> } |
| <a href=#285 id=285 data-nosnippet>285</a> <span class="prelude-val">None </span>=> <span class="self">self</span>.build(), |
| <a href=#286 id=286 data-nosnippet>286</a> } |
| <a href=#287 id=287 data-nosnippet>287</a> } |
| <a href=#288 id=288 data-nosnippet>288</a> |
| <a href=#289 id=289 data-nosnippet>289</a> <span class="kw">pub fn </span>build(<span class="kw-2">mut </span><span class="self">self</span>) -> TopSubtree<S> { |
| <a href=#290 id=290 data-nosnippet>290</a> <span class="macro">assert!</span>( |
| <a href=#291 id=291 data-nosnippet>291</a> <span class="self">self</span>.unclosed_subtree_indices.is_empty(), |
| <a href=#292 id=292 data-nosnippet>292</a> <span class="string">"attempt to build an unbalanced `TopSubtreeBuilder`" |
| <a href=#293 id=293 data-nosnippet>293</a> </span>); |
| <a href=#294 id=294 data-nosnippet>294</a> <span class="kw">let </span>total_len = <span class="self">self</span>.token_trees.len() <span class="kw">as </span>u32; |
| <a href=#295 id=295 data-nosnippet>295</a> <span class="kw">let </span>TokenTree::Subtree(top_subtree) = <span class="kw-2">&mut </span><span class="self">self</span>.token_trees[<span class="number">0</span>] <span class="kw">else </span>{ |
| <a href=#296 id=296 data-nosnippet>296</a> <span class="macro">unreachable!</span>(<span class="string">"first token tree is always a subtree"</span>); |
| <a href=#297 id=297 data-nosnippet>297</a> }; |
| <a href=#298 id=298 data-nosnippet>298</a> top_subtree.len = total_len - <span class="number">1</span>; |
| <a href=#299 id=299 data-nosnippet>299</a> TopSubtree(<span class="self">self</span>.token_trees.into_boxed_slice()) |
| <a href=#300 id=300 data-nosnippet>300</a> } |
| <a href=#301 id=301 data-nosnippet>301</a> |
| <a href=#302 id=302 data-nosnippet>302</a> <span class="kw">pub fn </span>restore_point(<span class="kw-2">&</span><span class="self">self</span>) -> SubtreeBuilderRestorePoint { |
| <a href=#303 id=303 data-nosnippet>303</a> SubtreeBuilderRestorePoint { |
| <a href=#304 id=304 data-nosnippet>304</a> unclosed_subtree_indices_len: <span class="self">self</span>.unclosed_subtree_indices.len(), |
| <a href=#305 id=305 data-nosnippet>305</a> token_trees_len: <span class="self">self</span>.token_trees.len(), |
| <a href=#306 id=306 data-nosnippet>306</a> last_closed_subtree: <span class="self">self</span>.last_closed_subtree, |
| <a href=#307 id=307 data-nosnippet>307</a> } |
| <a href=#308 id=308 data-nosnippet>308</a> } |
| <a href=#309 id=309 data-nosnippet>309</a> |
| <a href=#310 id=310 data-nosnippet>310</a> <span class="kw">pub fn </span>restore(<span class="kw-2">&mut </span><span class="self">self</span>, restore_point: SubtreeBuilderRestorePoint) { |
| <a href=#311 id=311 data-nosnippet>311</a> <span class="self">self</span>.unclosed_subtree_indices.truncate(restore_point.unclosed_subtree_indices_len); |
| <a href=#312 id=312 data-nosnippet>312</a> <span class="self">self</span>.token_trees.truncate(restore_point.token_trees_len); |
| <a href=#313 id=313 data-nosnippet>313</a> <span class="self">self</span>.last_closed_subtree = restore_point.last_closed_subtree; |
| <a href=#314 id=314 data-nosnippet>314</a> } |
| <a href=#315 id=315 data-nosnippet>315</a>} |
| <a href=#316 id=316 data-nosnippet>316</a> |
| <a href=#317 id=317 data-nosnippet>317</a><span class="attr">#[derive(Clone, Copy)] |
| <a href=#318 id=318 data-nosnippet>318</a></span><span class="kw">pub struct </span>SubtreeBuilderRestorePoint { |
| <a href=#319 id=319 data-nosnippet>319</a> unclosed_subtree_indices_len: usize, |
| <a href=#320 id=320 data-nosnippet>320</a> token_trees_len: usize, |
| <a href=#321 id=321 data-nosnippet>321</a> last_closed_subtree: <span class="prelude-ty">Option</span><usize>, |
| <a href=#322 id=322 data-nosnippet>322</a>} |
| <a href=#323 id=323 data-nosnippet>323</a> |
| <a href=#324 id=324 data-nosnippet>324</a><span class="attr">#[derive(Clone, Copy)] |
| <a href=#325 id=325 data-nosnippet>325</a></span><span class="kw">pub struct </span>TokenTreesView<<span class="lifetime">'a</span>, S>(<span class="kw-2">&</span><span class="lifetime">'a </span>[TokenTree<S>]); |
| <a href=#326 id=326 data-nosnippet>326</a> |
| <a href=#327 id=327 data-nosnippet>327</a><span class="kw">impl</span><<span class="lifetime">'a</span>, S: Copy> TokenTreesView<<span class="lifetime">'a</span>, S> { |
| <a href=#328 id=328 data-nosnippet>328</a> <span class="kw">pub fn </span>new(tts: <span class="kw-2">&</span><span class="lifetime">'a </span>[TokenTree<S>]) -> <span class="self">Self </span>{ |
| <a href=#329 id=329 data-nosnippet>329</a> <span class="kw">if </span><span class="macro">cfg!</span>(debug_assertions) { |
| <a href=#330 id=330 data-nosnippet>330</a> tts.iter().enumerate().for_each(|(idx, tt)| { |
| <a href=#331 id=331 data-nosnippet>331</a> <span class="kw">if let </span>TokenTree::Subtree(tt) = <span class="kw-2">&</span>tt { |
| <a href=#332 id=332 data-nosnippet>332</a> <span class="comment">// `<` and not `<=` because `Subtree.len` does not include the subtree node itself. |
| <a href=#333 id=333 data-nosnippet>333</a> </span><span class="macro">debug_assert!</span>( |
| <a href=#334 id=334 data-nosnippet>334</a> idx + tt.usize_len() < tts.len(), |
| <a href=#335 id=335 data-nosnippet>335</a> <span class="string">"`TokenTreeView::new()` was given a cut-in-half list" |
| <a href=#336 id=336 data-nosnippet>336</a> </span>); |
| <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="self">Self</span>(tts) |
| <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">pub fn </span>iter(<span class="kw-2">&</span><span class="self">self</span>) -> TtIter<<span class="lifetime">'a</span>, S> { |
| <a href=#344 id=344 data-nosnippet>344</a> TtIter::new(<span class="self">self</span>.<span class="number">0</span>) |
| <a href=#345 id=345 data-nosnippet>345</a> } |
| <a href=#346 id=346 data-nosnippet>346</a> |
| <a href=#347 id=347 data-nosnippet>347</a> <span class="kw">pub fn </span>cursor(<span class="kw-2">&</span><span class="self">self</span>) -> Cursor<<span class="lifetime">'a</span>, S> { |
| <a href=#348 id=348 data-nosnippet>348</a> Cursor::new(<span class="self">self</span>.<span class="number">0</span>) |
| <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> <span class="kw">pub fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <a href=#352 id=352 data-nosnippet>352</a> <span class="self">self</span>.<span class="number">0</span>.len() |
| <a href=#353 id=353 data-nosnippet>353</a> } |
| <a href=#354 id=354 data-nosnippet>354</a> |
| <a href=#355 id=355 data-nosnippet>355</a> <span class="kw">pub fn </span>is_empty(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <a href=#356 id=356 data-nosnippet>356</a> <span class="self">self</span>.<span class="number">0</span>.is_empty() |
| <a href=#357 id=357 data-nosnippet>357</a> } |
| <a href=#358 id=358 data-nosnippet>358</a> |
| <a href=#359 id=359 data-nosnippet>359</a> <span class="kw">pub fn </span>try_into_subtree(<span class="self">self</span>) -> <span class="prelude-ty">Option</span><SubtreeView<<span class="lifetime">'a</span>, S>> { |
| <a href=#360 id=360 data-nosnippet>360</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(TokenTree::Subtree(subtree)) = <span class="self">self</span>.<span class="number">0</span>.first() |
| <a href=#361 id=361 data-nosnippet>361</a> && subtree.usize_len() == (<span class="self">self</span>.<span class="number">0</span>.len() - <span class="number">1</span>) |
| <a href=#362 id=362 data-nosnippet>362</a> { |
| <a href=#363 id=363 data-nosnippet>363</a> <span class="kw">return </span><span class="prelude-val">Some</span>(SubtreeView::new(<span class="self">self</span>.<span class="number">0</span>)); |
| <a href=#364 id=364 data-nosnippet>364</a> } |
| <a href=#365 id=365 data-nosnippet>365</a> <span class="prelude-val">None |
| <a href=#366 id=366 data-nosnippet>366</a> </span>} |
| <a href=#367 id=367 data-nosnippet>367</a> |
| <a href=#368 id=368 data-nosnippet>368</a> <span class="kw">pub fn </span>strip_invisible(<span class="self">self</span>) -> TokenTreesView<<span class="lifetime">'a</span>, S> { |
| <a href=#369 id=369 data-nosnippet>369</a> <span class="self">self</span>.try_into_subtree().map(|subtree| subtree.strip_invisible()).unwrap_or(<span class="self">self</span>) |
| <a href=#370 id=370 data-nosnippet>370</a> } |
| <a href=#371 id=371 data-nosnippet>371</a> |
| <a href=#372 id=372 data-nosnippet>372</a> <span class="doccomment">/// This returns a **flat** structure of tokens (subtrees will be represented by a single node |
| <a href=#373 id=373 data-nosnippet>373</a> /// preceding their children), so it isn't suited for most use cases, only for matching leaves |
| <a href=#374 id=374 data-nosnippet>374</a> /// at the beginning/end with no subtrees before them. If you need a structured pass, use [`TtIter`]. |
| <a href=#375 id=375 data-nosnippet>375</a> </span><span class="kw">pub fn </span>flat_tokens(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span><span class="lifetime">'a </span>[TokenTree<S>] { |
| <a href=#376 id=376 data-nosnippet>376</a> <span class="self">self</span>.<span class="number">0 |
| <a href=#377 id=377 data-nosnippet>377</a> </span>} |
| <a href=#378 id=378 data-nosnippet>378</a> |
| <a href=#379 id=379 data-nosnippet>379</a> <span class="kw">pub fn </span>split( |
| <a href=#380 id=380 data-nosnippet>380</a> <span class="self">self</span>, |
| <a href=#381 id=381 data-nosnippet>381</a> <span class="kw-2">mut </span>split_fn: <span class="kw">impl </span>FnMut(TtElement<<span class="lifetime">'a</span>, S>) -> bool, |
| <a href=#382 id=382 data-nosnippet>382</a> ) -> <span class="kw">impl </span>Iterator<Item = TokenTreesView<<span class="lifetime">'a</span>, S>> { |
| <a href=#383 id=383 data-nosnippet>383</a> <span class="kw">let </span><span class="kw-2">mut </span>subtree_iter = <span class="self">self</span>.iter(); |
| <a href=#384 id=384 data-nosnippet>384</a> <span class="kw">let </span><span class="kw-2">mut </span>need_to_yield_even_if_empty = <span class="bool-val">true</span>; |
| <a href=#385 id=385 data-nosnippet>385</a> |
| <a href=#386 id=386 data-nosnippet>386</a> std::iter::from_fn(<span class="kw">move </span>|| { |
| <a href=#387 id=387 data-nosnippet>387</a> <span class="kw">if </span>subtree_iter.is_empty() && !need_to_yield_even_if_empty { |
| <a href=#388 id=388 data-nosnippet>388</a> <span class="kw">return </span><span class="prelude-val">None</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> need_to_yield_even_if_empty = <span class="bool-val">false</span>; |
| <a href=#392 id=392 data-nosnippet>392</a> <span class="kw">let </span>savepoint = subtree_iter.savepoint(); |
| <a href=#393 id=393 data-nosnippet>393</a> <span class="kw">let </span><span class="kw-2">mut </span>result = subtree_iter.from_savepoint(savepoint); |
| <a href=#394 id=394 data-nosnippet>394</a> <span class="kw">while let </span><span class="prelude-val">Some</span>(tt) = subtree_iter.next() { |
| <a href=#395 id=395 data-nosnippet>395</a> <span class="kw">if </span>split_fn(tt) { |
| <a href=#396 id=396 data-nosnippet>396</a> need_to_yield_even_if_empty = <span class="bool-val">true</span>; |
| <a href=#397 id=397 data-nosnippet>397</a> <span class="kw">break</span>; |
| <a href=#398 id=398 data-nosnippet>398</a> } |
| <a href=#399 id=399 data-nosnippet>399</a> result = subtree_iter.from_savepoint(savepoint); |
| <a href=#400 id=400 data-nosnippet>400</a> } |
| <a href=#401 id=401 data-nosnippet>401</a> <span class="prelude-val">Some</span>(result) |
| <a href=#402 id=402 data-nosnippet>402</a> }) |
| <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><span class="kw">impl</span><S: fmt::Debug + Copy> fmt::Debug <span class="kw">for </span>TokenTreesView<<span class="lifetime">'_</span>, S> { |
| <a href=#407 id=407 data-nosnippet>407</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <a href=#408 id=408 data-nosnippet>408</a> <span class="kw">let </span><span class="kw-2">mut </span>iter = <span class="self">self</span>.iter(); |
| <a href=#409 id=409 data-nosnippet>409</a> <span class="kw">while let </span><span class="prelude-val">Some</span>(tt) = iter.next() { |
| <a href=#410 id=410 data-nosnippet>410</a> print_debug_token(f, <span class="number">0</span>, tt)<span class="question-mark">?</span>; |
| <a href=#411 id=411 data-nosnippet>411</a> <span class="kw">if </span>!iter.is_empty() { |
| <a href=#412 id=412 data-nosnippet>412</a> <span class="macro">writeln!</span>(f)<span class="question-mark">?</span>; |
| <a href=#413 id=413 data-nosnippet>413</a> } |
| <a href=#414 id=414 data-nosnippet>414</a> } |
| <a href=#415 id=415 data-nosnippet>415</a> <span class="prelude-val">Ok</span>(()) |
| <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> |
| <a href=#419 id=419 data-nosnippet>419</a><span class="kw">impl</span><S: Copy> fmt::Display <span class="kw">for </span>TokenTreesView<<span class="lifetime">'_</span>, S> { |
| <a href=#420 id=420 data-nosnippet>420</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <a href=#421 id=421 data-nosnippet>421</a> <span class="kw">return </span>token_trees_display(f, <span class="self">self</span>.iter()); |
| <a href=#422 id=422 data-nosnippet>422</a> |
| <a href=#423 id=423 data-nosnippet>423</a> <span class="kw">fn </span>subtree_display<S>( |
| <a href=#424 id=424 data-nosnippet>424</a> subtree: <span class="kw-2">&</span>Subtree<S>, |
| <a href=#425 id=425 data-nosnippet>425</a> f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>, |
| <a href=#426 id=426 data-nosnippet>426</a> iter: TtIter<<span class="lifetime">'_</span>, S>, |
| <a href=#427 id=427 data-nosnippet>427</a> ) -> fmt::Result { |
| <a href=#428 id=428 data-nosnippet>428</a> <span class="kw">let </span>(l, r) = <span class="kw">match </span>subtree.delimiter.kind { |
| <a href=#429 id=429 data-nosnippet>429</a> DelimiterKind::Parenthesis => (<span class="string">"("</span>, <span class="string">")"</span>), |
| <a href=#430 id=430 data-nosnippet>430</a> DelimiterKind::Brace => (<span class="string">"{"</span>, <span class="string">"}"</span>), |
| <a href=#431 id=431 data-nosnippet>431</a> DelimiterKind::Bracket => (<span class="string">"["</span>, <span class="string">"]"</span>), |
| <a href=#432 id=432 data-nosnippet>432</a> DelimiterKind::Invisible => (<span class="string">""</span>, <span class="string">""</span>), |
| <a href=#433 id=433 data-nosnippet>433</a> }; |
| <a href=#434 id=434 data-nosnippet>434</a> f.write_str(l)<span class="question-mark">?</span>; |
| <a href=#435 id=435 data-nosnippet>435</a> token_trees_display(f, iter)<span class="question-mark">?</span>; |
| <a href=#436 id=436 data-nosnippet>436</a> f.write_str(r)<span class="question-mark">?</span>; |
| <a href=#437 id=437 data-nosnippet>437</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#438 id=438 data-nosnippet>438</a> } |
| <a href=#439 id=439 data-nosnippet>439</a> |
| <a href=#440 id=440 data-nosnippet>440</a> <span class="kw">fn </span>token_trees_display<S>(f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>, iter: TtIter<<span class="lifetime">'_</span>, S>) -> fmt::Result { |
| <a href=#441 id=441 data-nosnippet>441</a> <span class="kw">let </span><span class="kw-2">mut </span>needs_space = <span class="bool-val">false</span>; |
| <a href=#442 id=442 data-nosnippet>442</a> <span class="kw">for </span>child <span class="kw">in </span>iter { |
| <a href=#443 id=443 data-nosnippet>443</a> <span class="kw">if </span>needs_space { |
| <a href=#444 id=444 data-nosnippet>444</a> f.write_str(<span class="string">" "</span>)<span class="question-mark">?</span>; |
| <a href=#445 id=445 data-nosnippet>445</a> } |
| <a href=#446 id=446 data-nosnippet>446</a> needs_space = <span class="bool-val">true</span>; |
| <a href=#447 id=447 data-nosnippet>447</a> |
| <a href=#448 id=448 data-nosnippet>448</a> <span class="kw">match </span>child { |
| <a href=#449 id=449 data-nosnippet>449</a> TtElement::Leaf(Leaf::Punct(p)) => { |
| <a href=#450 id=450 data-nosnippet>450</a> needs_space = p.spacing == Spacing::Alone; |
| <a href=#451 id=451 data-nosnippet>451</a> fmt::Display::fmt(p, f)<span class="question-mark">?</span>; |
| <a href=#452 id=452 data-nosnippet>452</a> } |
| <a href=#453 id=453 data-nosnippet>453</a> TtElement::Leaf(leaf) => fmt::Display::fmt(leaf, f)<span class="question-mark">?</span>, |
| <a href=#454 id=454 data-nosnippet>454</a> TtElement::Subtree(subtree, subtree_iter) => { |
| <a href=#455 id=455 data-nosnippet>455</a> subtree_display(subtree, f, subtree_iter)<span class="question-mark">? |
| <a href=#456 id=456 data-nosnippet>456</a> </span>} |
| <a href=#457 id=457 data-nosnippet>457</a> } |
| <a href=#458 id=458 data-nosnippet>458</a> } |
| <a href=#459 id=459 data-nosnippet>459</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#460 id=460 data-nosnippet>460</a> } |
| <a href=#461 id=461 data-nosnippet>461</a> } |
| <a href=#462 id=462 data-nosnippet>462</a>} |
| <a href=#463 id=463 data-nosnippet>463</a> |
| <a href=#464 id=464 data-nosnippet>464</a><span class="attr">#[derive(Clone, Copy)] |
| <a href=#465 id=465 data-nosnippet>465</a></span><span class="comment">// Invariant: always starts with `Subtree` that covers the entire thing. |
| <a href=#466 id=466 data-nosnippet>466</a></span><span class="kw">pub struct </span>SubtreeView<<span class="lifetime">'a</span>, S>(<span class="kw-2">&</span><span class="lifetime">'a </span>[TokenTree<S>]); |
| <a href=#467 id=467 data-nosnippet>467</a> |
| <a href=#468 id=468 data-nosnippet>468</a><span class="kw">impl</span><<span class="lifetime">'a</span>, S: Copy> SubtreeView<<span class="lifetime">'a</span>, S> { |
| <a href=#469 id=469 data-nosnippet>469</a> <span class="kw">pub fn </span>new(tts: <span class="kw-2">&</span><span class="lifetime">'a </span>[TokenTree<S>]) -> <span class="self">Self </span>{ |
| <a href=#470 id=470 data-nosnippet>470</a> <span class="kw">if </span><span class="macro">cfg!</span>(debug_assertions) { |
| <a href=#471 id=471 data-nosnippet>471</a> <span class="kw">let </span>TokenTree::Subtree(subtree) = <span class="kw-2">&</span>tts[<span class="number">0</span>] <span class="kw">else </span>{ |
| <a href=#472 id=472 data-nosnippet>472</a> <span class="macro">panic!</span>(<span class="string">"first token tree must be a subtree in `SubtreeView`"</span>); |
| <a href=#473 id=473 data-nosnippet>473</a> }; |
| <a href=#474 id=474 data-nosnippet>474</a> <span class="macro">assert_eq!</span>( |
| <a href=#475 id=475 data-nosnippet>475</a> subtree.usize_len(), |
| <a href=#476 id=476 data-nosnippet>476</a> tts.len() - <span class="number">1</span>, |
| <a href=#477 id=477 data-nosnippet>477</a> <span class="string">"subtree must cover the entire `SubtreeView`" |
| <a href=#478 id=478 data-nosnippet>478</a> </span>); |
| <a href=#479 id=479 data-nosnippet>479</a> } |
| <a href=#480 id=480 data-nosnippet>480</a> <span class="self">Self</span>(tts) |
| <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 class="kw">pub fn </span>as_token_trees(<span class="self">self</span>) -> TokenTreesView<<span class="lifetime">'a</span>, S> { |
| <a href=#484 id=484 data-nosnippet>484</a> TokenTreesView::new(<span class="self">self</span>.<span class="number">0</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> <span class="kw">pub fn </span>iter(<span class="kw-2">&</span><span class="self">self</span>) -> TtIter<<span class="lifetime">'a</span>, S> { |
| <a href=#488 id=488 data-nosnippet>488</a> TtIter::new(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>[<span class="number">1</span>..]) |
| <a href=#489 id=489 data-nosnippet>489</a> } |
| <a href=#490 id=490 data-nosnippet>490</a> |
| <a href=#491 id=491 data-nosnippet>491</a> <span class="kw">pub fn </span>top_subtree(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span><span class="lifetime">'a </span>Subtree<S> { |
| <a href=#492 id=492 data-nosnippet>492</a> <span class="kw">let </span>TokenTree::Subtree(subtree) = <span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>[<span class="number">0</span>] <span class="kw">else </span>{ |
| <a href=#493 id=493 data-nosnippet>493</a> <span class="macro">unreachable!</span>(<span class="string">"the first token tree is always the top subtree"</span>); |
| <a href=#494 id=494 data-nosnippet>494</a> }; |
| <a href=#495 id=495 data-nosnippet>495</a> subtree |
| <a href=#496 id=496 data-nosnippet>496</a> } |
| <a href=#497 id=497 data-nosnippet>497</a> |
| <a href=#498 id=498 data-nosnippet>498</a> <span class="kw">pub fn </span>strip_invisible(<span class="kw-2">&</span><span class="self">self</span>) -> TokenTreesView<<span class="lifetime">'a</span>, S> { |
| <a href=#499 id=499 data-nosnippet>499</a> <span class="kw">if </span><span class="self">self</span>.top_subtree().delimiter.kind == DelimiterKind::Invisible { |
| <a href=#500 id=500 data-nosnippet>500</a> TokenTreesView::new(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>[<span class="number">1</span>..]) |
| <a href=#501 id=501 data-nosnippet>501</a> } <span class="kw">else </span>{ |
| <a href=#502 id=502 data-nosnippet>502</a> TokenTreesView::new(<span class="self">self</span>.<span class="number">0</span>) |
| <a href=#503 id=503 data-nosnippet>503</a> } |
| <a href=#504 id=504 data-nosnippet>504</a> } |
| <a href=#505 id=505 data-nosnippet>505</a> |
| <a href=#506 id=506 data-nosnippet>506</a> <span class="kw">pub fn </span>token_trees(<span class="kw-2">&</span><span class="self">self</span>) -> TokenTreesView<<span class="lifetime">'a</span>, S> { |
| <a href=#507 id=507 data-nosnippet>507</a> TokenTreesView::new(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>[<span class="number">1</span>..]) |
| <a href=#508 id=508 data-nosnippet>508</a> } |
| <a href=#509 id=509 data-nosnippet>509</a>} |
| <a href=#510 id=510 data-nosnippet>510</a> |
| <a href=#511 id=511 data-nosnippet>511</a><span class="kw">impl</span><S: fmt::Debug + Copy> fmt::Debug <span class="kw">for </span>SubtreeView<<span class="lifetime">'_</span>, S> { |
| <a href=#512 id=512 data-nosnippet>512</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <a href=#513 id=513 data-nosnippet>513</a> fmt::Debug::fmt(<span class="kw-2">&</span>TokenTreesView(<span class="self">self</span>.<span class="number">0</span>), f) |
| <a href=#514 id=514 data-nosnippet>514</a> } |
| <a href=#515 id=515 data-nosnippet>515</a>} |
| <a href=#516 id=516 data-nosnippet>516</a> |
| <a href=#517 id=517 data-nosnippet>517</a><span class="kw">impl</span><S: Copy> fmt::Display <span class="kw">for </span>SubtreeView<<span class="lifetime">'_</span>, S> { |
| <a href=#518 id=518 data-nosnippet>518</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <a href=#519 id=519 data-nosnippet>519</a> fmt::Display::fmt(<span class="kw-2">&</span>TokenTreesView(<span class="self">self</span>.<span class="number">0</span>), f) |
| <a href=#520 id=520 data-nosnippet>520</a> } |
| <a href=#521 id=521 data-nosnippet>521</a>} |
| <a href=#522 id=522 data-nosnippet>522</a> |
| <a href=#523 id=523 data-nosnippet>523</a><span class="attr">#[derive(Debug, Copy, Clone, PartialEq)] |
| <a href=#524 id=524 data-nosnippet>524</a></span><span class="kw">pub struct </span>DelimSpan<S> { |
| <a href=#525 id=525 data-nosnippet>525</a> <span class="kw">pub </span>open: S, |
| <a href=#526 id=526 data-nosnippet>526</a> <span class="kw">pub </span>close: S, |
| <a href=#527 id=527 data-nosnippet>527</a>} |
| <a href=#528 id=528 data-nosnippet>528</a> |
| <a href=#529 id=529 data-nosnippet>529</a><span class="kw">impl</span><Span: Copy> DelimSpan<Span> { |
| <a href=#530 id=530 data-nosnippet>530</a> <span class="kw">pub fn </span>from_single(sp: Span) -> <span class="self">Self </span>{ |
| <a href=#531 id=531 data-nosnippet>531</a> DelimSpan { open: sp, close: sp } |
| <a href=#532 id=532 data-nosnippet>532</a> } |
| <a href=#533 id=533 data-nosnippet>533</a> |
| <a href=#534 id=534 data-nosnippet>534</a> <span class="kw">pub fn </span>from_pair(open: Span, close: Span) -> <span class="self">Self </span>{ |
| <a href=#535 id=535 data-nosnippet>535</a> DelimSpan { open, close } |
| <a href=#536 id=536 data-nosnippet>536</a> } |
| <a href=#537 id=537 data-nosnippet>537</a>} |
| <a href=#538 id=538 data-nosnippet>538</a><span class="attr">#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)] |
| <a href=#539 id=539 data-nosnippet>539</a></span><span class="kw">pub struct </span>Delimiter<S> { |
| <a href=#540 id=540 data-nosnippet>540</a> <span class="kw">pub </span>open: S, |
| <a href=#541 id=541 data-nosnippet>541</a> <span class="kw">pub </span>close: S, |
| <a href=#542 id=542 data-nosnippet>542</a> <span class="kw">pub </span>kind: DelimiterKind, |
| <a href=#543 id=543 data-nosnippet>543</a>} |
| <a href=#544 id=544 data-nosnippet>544</a> |
| <a href=#545 id=545 data-nosnippet>545</a><span class="kw">impl</span><S: Copy> Delimiter<S> { |
| <a href=#546 id=546 data-nosnippet>546</a> <span class="kw">pub const fn </span>invisible_spanned(span: S) -> <span class="self">Self </span>{ |
| <a href=#547 id=547 data-nosnippet>547</a> Delimiter { open: span, close: span, kind: DelimiterKind::Invisible } |
| <a href=#548 id=548 data-nosnippet>548</a> } |
| <a href=#549 id=549 data-nosnippet>549</a> |
| <a href=#550 id=550 data-nosnippet>550</a> <span class="kw">pub const fn </span>invisible_delim_spanned(span: DelimSpan<S>) -> <span class="self">Self </span>{ |
| <a href=#551 id=551 data-nosnippet>551</a> Delimiter { open: span.open, close: span.close, kind: DelimiterKind::Invisible } |
| <a href=#552 id=552 data-nosnippet>552</a> } |
| <a href=#553 id=553 data-nosnippet>553</a> |
| <a href=#554 id=554 data-nosnippet>554</a> <span class="kw">pub fn </span>delim_span(<span class="kw-2">&</span><span class="self">self</span>) -> DelimSpan<S> { |
| <a href=#555 id=555 data-nosnippet>555</a> DelimSpan { open: <span class="self">self</span>.open, close: <span class="self">self</span>.close } |
| <a href=#556 id=556 data-nosnippet>556</a> } |
| <a href=#557 id=557 data-nosnippet>557</a>} |
| <a href=#558 id=558 data-nosnippet>558</a> |
| <a href=#559 id=559 data-nosnippet>559</a><span class="attr">#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)] |
| <a href=#560 id=560 data-nosnippet>560</a></span><span class="kw">pub enum </span>DelimiterKind { |
| <a href=#561 id=561 data-nosnippet>561</a> Parenthesis, |
| <a href=#562 id=562 data-nosnippet>562</a> Brace, |
| <a href=#563 id=563 data-nosnippet>563</a> Bracket, |
| <a href=#564 id=564 data-nosnippet>564</a> Invisible, |
| <a href=#565 id=565 data-nosnippet>565</a>} |
| <a href=#566 id=566 data-nosnippet>566</a> |
| <a href=#567 id=567 data-nosnippet>567</a><span class="attr">#[derive(Debug, Clone, PartialEq, Eq, Hash)] |
| <a href=#568 id=568 data-nosnippet>568</a></span><span class="kw">pub struct </span>Literal<S> { |
| <a href=#569 id=569 data-nosnippet>569</a> <span class="comment">// escaped |
| <a href=#570 id=570 data-nosnippet>570</a> </span><span class="kw">pub </span>symbol: Symbol, |
| <a href=#571 id=571 data-nosnippet>571</a> <span class="kw">pub </span>span: S, |
| <a href=#572 id=572 data-nosnippet>572</a> <span class="kw">pub </span>kind: LitKind, |
| <a href=#573 id=573 data-nosnippet>573</a> <span class="kw">pub </span>suffix: <span class="prelude-ty">Option</span><Symbol>, |
| <a href=#574 id=574 data-nosnippet>574</a>} |
| <a href=#575 id=575 data-nosnippet>575</a> |
| <a href=#576 id=576 data-nosnippet>576</a><span class="kw">pub fn </span>token_to_literal<S>(text: <span class="kw-2">&</span>str, span: S) -> Literal<S> |
| <a href=#577 id=577 data-nosnippet>577</a><span class="kw">where |
| <a href=#578 id=578 data-nosnippet>578</a> </span>S: Copy, |
| <a href=#579 id=579 data-nosnippet>579</a>{ |
| <a href=#580 id=580 data-nosnippet>580</a> <span class="kw">use </span>rustc_lexer::LiteralKind; |
| <a href=#581 id=581 data-nosnippet>581</a> |
| <a href=#582 id=582 data-nosnippet>582</a> <span class="kw">let </span>token = rustc_lexer::tokenize(text, rustc_lexer::FrontmatterAllowed::No).next_tuple(); |
| <a href=#583 id=583 data-nosnippet>583</a> <span class="kw">let </span><span class="prelude-val">Some</span>((rustc_lexer::Token { |
| <a href=#584 id=584 data-nosnippet>584</a> kind: rustc_lexer::TokenKind::Literal { kind, suffix_start }, |
| <a href=#585 id=585 data-nosnippet>585</a> .. |
| <a href=#586 id=586 data-nosnippet>586</a> },)) = token |
| <a href=#587 id=587 data-nosnippet>587</a> <span class="kw">else </span>{ |
| <a href=#588 id=588 data-nosnippet>588</a> <span class="kw">return </span>Literal { |
| <a href=#589 id=589 data-nosnippet>589</a> span, |
| <a href=#590 id=590 data-nosnippet>590</a> symbol: Symbol::intern(text), |
| <a href=#591 id=591 data-nosnippet>591</a> kind: LitKind::Err(()), |
| <a href=#592 id=592 data-nosnippet>592</a> suffix: <span class="prelude-val">None</span>, |
| <a href=#593 id=593 data-nosnippet>593</a> }; |
| <a href=#594 id=594 data-nosnippet>594</a> }; |
| <a href=#595 id=595 data-nosnippet>595</a> |
| <a href=#596 id=596 data-nosnippet>596</a> <span class="kw">let </span>(kind, start_offset, end_offset) = <span class="kw">match </span>kind { |
| <a href=#597 id=597 data-nosnippet>597</a> LiteralKind::Int { .. } => (LitKind::Integer, <span class="number">0</span>, <span class="number">0</span>), |
| <a href=#598 id=598 data-nosnippet>598</a> LiteralKind::Float { .. } => (LitKind::Float, <span class="number">0</span>, <span class="number">0</span>), |
| <a href=#599 id=599 data-nosnippet>599</a> LiteralKind::Char { terminated } => (LitKind::Char, <span class="number">1</span>, terminated <span class="kw">as </span>usize), |
| <a href=#600 id=600 data-nosnippet>600</a> LiteralKind::Byte { terminated } => (LitKind::Byte, <span class="number">2</span>, terminated <span class="kw">as </span>usize), |
| <a href=#601 id=601 data-nosnippet>601</a> LiteralKind::Str { terminated } => (LitKind::Str, <span class="number">1</span>, terminated <span class="kw">as </span>usize), |
| <a href=#602 id=602 data-nosnippet>602</a> LiteralKind::ByteStr { terminated } => (LitKind::ByteStr, <span class="number">2</span>, terminated <span class="kw">as </span>usize), |
| <a href=#603 id=603 data-nosnippet>603</a> LiteralKind::CStr { terminated } => (LitKind::CStr, <span class="number">2</span>, terminated <span class="kw">as </span>usize), |
| <a href=#604 id=604 data-nosnippet>604</a> LiteralKind::RawStr { n_hashes } => ( |
| <a href=#605 id=605 data-nosnippet>605</a> LitKind::StrRaw(n_hashes.unwrap_or_default()), |
| <a href=#606 id=606 data-nosnippet>606</a> <span class="number">2 </span>+ n_hashes.unwrap_or_default() <span class="kw">as </span>usize, |
| <a href=#607 id=607 data-nosnippet>607</a> <span class="number">1 </span>+ n_hashes.unwrap_or_default() <span class="kw">as </span>usize, |
| <a href=#608 id=608 data-nosnippet>608</a> ), |
| <a href=#609 id=609 data-nosnippet>609</a> LiteralKind::RawByteStr { n_hashes } => ( |
| <a href=#610 id=610 data-nosnippet>610</a> LitKind::ByteStrRaw(n_hashes.unwrap_or_default()), |
| <a href=#611 id=611 data-nosnippet>611</a> <span class="number">3 </span>+ n_hashes.unwrap_or_default() <span class="kw">as </span>usize, |
| <a href=#612 id=612 data-nosnippet>612</a> <span class="number">1 </span>+ n_hashes.unwrap_or_default() <span class="kw">as </span>usize, |
| <a href=#613 id=613 data-nosnippet>613</a> ), |
| <a href=#614 id=614 data-nosnippet>614</a> LiteralKind::RawCStr { n_hashes } => ( |
| <a href=#615 id=615 data-nosnippet>615</a> LitKind::CStrRaw(n_hashes.unwrap_or_default()), |
| <a href=#616 id=616 data-nosnippet>616</a> <span class="number">3 </span>+ n_hashes.unwrap_or_default() <span class="kw">as </span>usize, |
| <a href=#617 id=617 data-nosnippet>617</a> <span class="number">1 </span>+ n_hashes.unwrap_or_default() <span class="kw">as </span>usize, |
| <a href=#618 id=618 data-nosnippet>618</a> ), |
| <a href=#619 id=619 data-nosnippet>619</a> }; |
| <a href=#620 id=620 data-nosnippet>620</a> |
| <a href=#621 id=621 data-nosnippet>621</a> <span class="kw">let </span>(lit, suffix) = text.split_at(suffix_start <span class="kw">as </span>usize); |
| <a href=#622 id=622 data-nosnippet>622</a> <span class="kw">let </span>lit = <span class="kw-2">&</span>lit[start_offset..lit.len() - end_offset]; |
| <a href=#623 id=623 data-nosnippet>623</a> <span class="kw">let </span>suffix = <span class="kw">match </span>suffix { |
| <a href=#624 id=624 data-nosnippet>624</a> <span class="string">"" </span>| <span class="string">"_" </span>=> <span class="prelude-val">None</span>, |
| <a href=#625 id=625 data-nosnippet>625</a> suffix => <span class="prelude-val">Some</span>(Symbol::intern(suffix)), |
| <a href=#626 id=626 data-nosnippet>626</a> }; |
| <a href=#627 id=627 data-nosnippet>627</a> |
| <a href=#628 id=628 data-nosnippet>628</a> Literal { span, symbol: Symbol::intern(lit), kind, suffix } |
| <a href=#629 id=629 data-nosnippet>629</a>} |
| <a href=#630 id=630 data-nosnippet>630</a> |
| <a href=#631 id=631 data-nosnippet>631</a><span class="attr">#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] |
| <a href=#632 id=632 data-nosnippet>632</a></span><span class="kw">pub struct </span>Punct<S> { |
| <a href=#633 id=633 data-nosnippet>633</a> <span class="kw">pub </span>char: char, |
| <a href=#634 id=634 data-nosnippet>634</a> <span class="kw">pub </span>spacing: Spacing, |
| <a href=#635 id=635 data-nosnippet>635</a> <span class="kw">pub </span>span: S, |
| <a href=#636 id=636 data-nosnippet>636</a>} |
| <a href=#637 id=637 data-nosnippet>637</a> |
| <a href=#638 id=638 data-nosnippet>638</a><span class="doccomment">/// Indicates whether a token can join with the following token to form a |
| <a href=#639 id=639 data-nosnippet>639</a>/// compound token. Used for conversions to `proc_macro::Spacing`. Also used to |
| <a href=#640 id=640 data-nosnippet>640</a>/// guide pretty-printing, which is where the `JointHidden` value (which isn't |
| <a href=#641 id=641 data-nosnippet>641</a>/// part of `proc_macro::Spacing`) comes in useful. |
| <a href=#642 id=642 data-nosnippet>642</a></span><span class="attr">#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] |
| <a href=#643 id=643 data-nosnippet>643</a></span><span class="kw">pub enum </span>Spacing { |
| <a href=#644 id=644 data-nosnippet>644</a> <span class="doccomment">/// The token cannot join with the following token to form a compound |
| <a href=#645 id=645 data-nosnippet>645</a> /// token. |
| <a href=#646 id=646 data-nosnippet>646</a> /// |
| <a href=#647 id=647 data-nosnippet>647</a> /// In token streams parsed from source code, the compiler will use `Alone` |
| <a href=#648 id=648 data-nosnippet>648</a> /// for any token immediately followed by whitespace, a non-doc comment, or |
| <a href=#649 id=649 data-nosnippet>649</a> /// EOF. |
| <a href=#650 id=650 data-nosnippet>650</a> /// |
| <a href=#651 id=651 data-nosnippet>651</a> /// When constructing token streams within the compiler, use this for each |
| <a href=#652 id=652 data-nosnippet>652</a> /// token that (a) should be pretty-printed with a space after it, or (b) |
| <a href=#653 id=653 data-nosnippet>653</a> /// is the last token in the stream. (In the latter case the choice of |
| <a href=#654 id=654 data-nosnippet>654</a> /// spacing doesn't matter because it is never used for the last token. We |
| <a href=#655 id=655 data-nosnippet>655</a> /// arbitrarily use `Alone`.) |
| <a href=#656 id=656 data-nosnippet>656</a> /// |
| <a href=#657 id=657 data-nosnippet>657</a> /// Converts to `proc_macro::Spacing::Alone`, and |
| <a href=#658 id=658 data-nosnippet>658</a> /// `proc_macro::Spacing::Alone` converts back to this. |
| <a href=#659 id=659 data-nosnippet>659</a> </span>Alone, |
| <a href=#660 id=660 data-nosnippet>660</a> |
| <a href=#661 id=661 data-nosnippet>661</a> <span class="doccomment">/// The token can join with the following token to form a compound token. |
| <a href=#662 id=662 data-nosnippet>662</a> /// |
| <a href=#663 id=663 data-nosnippet>663</a> /// In token streams parsed from source code, the compiler will use `Joint` |
| <a href=#664 id=664 data-nosnippet>664</a> /// for any token immediately followed by punctuation (as determined by |
| <a href=#665 id=665 data-nosnippet>665</a> /// `Token::is_punct`). |
| <a href=#666 id=666 data-nosnippet>666</a> /// |
| <a href=#667 id=667 data-nosnippet>667</a> /// When constructing token streams within the compiler, use this for each |
| <a href=#668 id=668 data-nosnippet>668</a> /// token that (a) should be pretty-printed without a space after it, and |
| <a href=#669 id=669 data-nosnippet>669</a> /// (b) is followed by a punctuation token. |
| <a href=#670 id=670 data-nosnippet>670</a> /// |
| <a href=#671 id=671 data-nosnippet>671</a> /// Converts to `proc_macro::Spacing::Joint`, and |
| <a href=#672 id=672 data-nosnippet>672</a> /// `proc_macro::Spacing::Joint` converts back to this. |
| <a href=#673 id=673 data-nosnippet>673</a> </span>Joint, |
| <a href=#674 id=674 data-nosnippet>674</a> |
| <a href=#675 id=675 data-nosnippet>675</a> <span class="doccomment">/// The token can join with the following token to form a compound token, |
| <a href=#676 id=676 data-nosnippet>676</a> /// but this will not be visible at the proc macro level. (This is what the |
| <a href=#677 id=677 data-nosnippet>677</a> /// `Hidden` means; see below.) |
| <a href=#678 id=678 data-nosnippet>678</a> /// |
| <a href=#679 id=679 data-nosnippet>679</a> /// In token streams parsed from source code, the compiler will use |
| <a href=#680 id=680 data-nosnippet>680</a> /// `JointHidden` for any token immediately followed by anything not |
| <a href=#681 id=681 data-nosnippet>681</a> /// covered by the `Alone` and `Joint` cases: an identifier, lifetime, |
| <a href=#682 id=682 data-nosnippet>682</a> /// literal, delimiter, doc comment. |
| <a href=#683 id=683 data-nosnippet>683</a> /// |
| <a href=#684 id=684 data-nosnippet>684</a> /// When constructing token streams, use this for each token that (a) |
| <a href=#685 id=685 data-nosnippet>685</a> /// should be pretty-printed without a space after it, and (b) is followed |
| <a href=#686 id=686 data-nosnippet>686</a> /// by a non-punctuation token. |
| <a href=#687 id=687 data-nosnippet>687</a> /// |
| <a href=#688 id=688 data-nosnippet>688</a> /// Converts to `proc_macro::Spacing::Alone`, but |
| <a href=#689 id=689 data-nosnippet>689</a> /// `proc_macro::Spacing::Alone` converts back to `token::Spacing::Alone`. |
| <a href=#690 id=690 data-nosnippet>690</a> /// Because of that, pretty-printing of `TokenStream`s produced by proc |
| <a href=#691 id=691 data-nosnippet>691</a> /// macros is unavoidably uglier (with more whitespace between tokens) than |
| <a href=#692 id=692 data-nosnippet>692</a> /// pretty-printing of `TokenStream`'s produced by other means (i.e. parsed |
| <a href=#693 id=693 data-nosnippet>693</a> /// source code, internally constructed token streams, and token streams |
| <a href=#694 id=694 data-nosnippet>694</a> /// produced by declarative macros). |
| <a href=#695 id=695 data-nosnippet>695</a> </span>JointHidden, |
| <a href=#696 id=696 data-nosnippet>696</a>} |
| <a href=#697 id=697 data-nosnippet>697</a> |
| <a href=#698 id=698 data-nosnippet>698</a><span class="doccomment">/// Identifier or keyword. |
| <a href=#699 id=699 data-nosnippet>699</a></span><span class="attr">#[derive(Debug, Clone, PartialEq, Eq, Hash)] |
| <a href=#700 id=700 data-nosnippet>700</a></span><span class="kw">pub struct </span>Ident<S> { |
| <a href=#701 id=701 data-nosnippet>701</a> <span class="kw">pub </span>sym: Symbol, |
| <a href=#702 id=702 data-nosnippet>702</a> <span class="kw">pub </span>span: S, |
| <a href=#703 id=703 data-nosnippet>703</a> <span class="kw">pub </span>is_raw: IdentIsRaw, |
| <a href=#704 id=704 data-nosnippet>704</a>} |
| <a href=#705 id=705 data-nosnippet>705</a> |
| <a href=#706 id=706 data-nosnippet>706</a><span class="kw">impl</span><S> Ident<S> { |
| <a href=#707 id=707 data-nosnippet>707</a> <span class="kw">pub fn </span>new(text: <span class="kw-2">&</span>str, span: S) -> <span class="self">Self </span>{ |
| <a href=#708 id=708 data-nosnippet>708</a> <span class="comment">// let raw_stripped = IdentIsRaw::split_from_symbol(text.as_ref()); |
| <a href=#709 id=709 data-nosnippet>709</a> </span><span class="kw">let </span>(is_raw, text) = IdentIsRaw::split_from_symbol(text); |
| <a href=#710 id=710 data-nosnippet>710</a> Ident { sym: Symbol::intern(text), span, is_raw } |
| <a href=#711 id=711 data-nosnippet>711</a> } |
| <a href=#712 id=712 data-nosnippet>712</a>} |
| <a href=#713 id=713 data-nosnippet>713</a> |
| <a href=#714 id=714 data-nosnippet>714</a><span class="kw">fn </span>print_debug_subtree<S: fmt::Debug>( |
| <a href=#715 id=715 data-nosnippet>715</a> f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>, |
| <a href=#716 id=716 data-nosnippet>716</a> subtree: <span class="kw-2">&</span>Subtree<S>, |
| <a href=#717 id=717 data-nosnippet>717</a> level: usize, |
| <a href=#718 id=718 data-nosnippet>718</a> iter: TtIter<<span class="lifetime">'_</span>, S>, |
| <a href=#719 id=719 data-nosnippet>719</a>) -> fmt::Result { |
| <a href=#720 id=720 data-nosnippet>720</a> <span class="kw">let </span>align = <span class="string">" "</span>.repeat(level); |
| <a href=#721 id=721 data-nosnippet>721</a> |
| <a href=#722 id=722 data-nosnippet>722</a> <span class="kw">let </span>Delimiter { kind, open, close } = <span class="kw-2">&</span>subtree.delimiter; |
| <a href=#723 id=723 data-nosnippet>723</a> <span class="kw">let </span>delim = <span class="kw">match </span>kind { |
| <a href=#724 id=724 data-nosnippet>724</a> DelimiterKind::Invisible => <span class="string">"$$"</span>, |
| <a href=#725 id=725 data-nosnippet>725</a> DelimiterKind::Parenthesis => <span class="string">"()"</span>, |
| <a href=#726 id=726 data-nosnippet>726</a> DelimiterKind::Brace => <span class="string">"{}"</span>, |
| <a href=#727 id=727 data-nosnippet>727</a> DelimiterKind::Bracket => <span class="string">"[]"</span>, |
| <a href=#728 id=728 data-nosnippet>728</a> }; |
| <a href=#729 id=729 data-nosnippet>729</a> |
| <a href=#730 id=730 data-nosnippet>730</a> <span class="macro">write!</span>(f, <span class="string">"{align}SUBTREE {delim} "</span>,)<span class="question-mark">?</span>; |
| <a href=#731 id=731 data-nosnippet>731</a> <span class="macro">write!</span>(f, <span class="string">"{open:#?}"</span>)<span class="question-mark">?</span>; |
| <a href=#732 id=732 data-nosnippet>732</a> <span class="macro">write!</span>(f, <span class="string">" "</span>)<span class="question-mark">?</span>; |
| <a href=#733 id=733 data-nosnippet>733</a> <span class="macro">write!</span>(f, <span class="string">"{close:#?}"</span>)<span class="question-mark">?</span>; |
| <a href=#734 id=734 data-nosnippet>734</a> <span class="kw">for </span>child <span class="kw">in </span>iter { |
| <a href=#735 id=735 data-nosnippet>735</a> <span class="macro">writeln!</span>(f)<span class="question-mark">?</span>; |
| <a href=#736 id=736 data-nosnippet>736</a> print_debug_token(f, level + <span class="number">1</span>, child)<span class="question-mark">?</span>; |
| <a href=#737 id=737 data-nosnippet>737</a> } |
| <a href=#738 id=738 data-nosnippet>738</a> |
| <a href=#739 id=739 data-nosnippet>739</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#740 id=740 data-nosnippet>740</a>} |
| <a href=#741 id=741 data-nosnippet>741</a> |
| <a href=#742 id=742 data-nosnippet>742</a><span class="kw">fn </span>print_debug_token<S: fmt::Debug>( |
| <a href=#743 id=743 data-nosnippet>743</a> f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>, |
| <a href=#744 id=744 data-nosnippet>744</a> level: usize, |
| <a href=#745 id=745 data-nosnippet>745</a> tt: TtElement<<span class="lifetime">'_</span>, S>, |
| <a href=#746 id=746 data-nosnippet>746</a>) -> fmt::Result { |
| <a href=#747 id=747 data-nosnippet>747</a> <span class="kw">let </span>align = <span class="string">" "</span>.repeat(level); |
| <a href=#748 id=748 data-nosnippet>748</a> |
| <a href=#749 id=749 data-nosnippet>749</a> <span class="kw">match </span>tt { |
| <a href=#750 id=750 data-nosnippet>750</a> TtElement::Leaf(leaf) => <span class="kw">match </span>leaf { |
| <a href=#751 id=751 data-nosnippet>751</a> Leaf::Literal(lit) => { |
| <a href=#752 id=752 data-nosnippet>752</a> <span class="macro">write!</span>( |
| <a href=#753 id=753 data-nosnippet>753</a> f, |
| <a href=#754 id=754 data-nosnippet>754</a> <span class="string">"{}LITERAL {:?} {}{} {:#?}"</span>, |
| <a href=#755 id=755 data-nosnippet>755</a> align, |
| <a href=#756 id=756 data-nosnippet>756</a> lit.kind, |
| <a href=#757 id=757 data-nosnippet>757</a> lit.symbol, |
| <a href=#758 id=758 data-nosnippet>758</a> lit.suffix.as_ref().map(|it| it.as_str()).unwrap_or(<span class="string">""</span>), |
| <a href=#759 id=759 data-nosnippet>759</a> lit.span |
| <a href=#760 id=760 data-nosnippet>760</a> )<span class="question-mark">?</span>; |
| <a href=#761 id=761 data-nosnippet>761</a> } |
| <a href=#762 id=762 data-nosnippet>762</a> Leaf::Punct(punct) => { |
| <a href=#763 id=763 data-nosnippet>763</a> <span class="macro">write!</span>( |
| <a href=#764 id=764 data-nosnippet>764</a> f, |
| <a href=#765 id=765 data-nosnippet>765</a> <span class="string">"{}PUNCH {} [{}] {:#?}"</span>, |
| <a href=#766 id=766 data-nosnippet>766</a> align, |
| <a href=#767 id=767 data-nosnippet>767</a> punct.char, |
| <a href=#768 id=768 data-nosnippet>768</a> <span class="kw">if </span>punct.spacing == Spacing::Alone { <span class="string">"alone" </span>} <span class="kw">else </span>{ <span class="string">"joint" </span>}, |
| <a href=#769 id=769 data-nosnippet>769</a> punct.span |
| <a href=#770 id=770 data-nosnippet>770</a> )<span class="question-mark">?</span>; |
| <a href=#771 id=771 data-nosnippet>771</a> } |
| <a href=#772 id=772 data-nosnippet>772</a> Leaf::Ident(ident) => { |
| <a href=#773 id=773 data-nosnippet>773</a> <span class="macro">write!</span>( |
| <a href=#774 id=774 data-nosnippet>774</a> f, |
| <a href=#775 id=775 data-nosnippet>775</a> <span class="string">"{}IDENT {}{} {:#?}"</span>, |
| <a href=#776 id=776 data-nosnippet>776</a> align, |
| <a href=#777 id=777 data-nosnippet>777</a> ident.is_raw.as_str(), |
| <a href=#778 id=778 data-nosnippet>778</a> ident.sym, |
| <a href=#779 id=779 data-nosnippet>779</a> ident.span |
| <a href=#780 id=780 data-nosnippet>780</a> )<span class="question-mark">?</span>; |
| <a href=#781 id=781 data-nosnippet>781</a> } |
| <a href=#782 id=782 data-nosnippet>782</a> }, |
| <a href=#783 id=783 data-nosnippet>783</a> TtElement::Subtree(subtree, subtree_iter) => { |
| <a href=#784 id=784 data-nosnippet>784</a> print_debug_subtree(f, subtree, level, subtree_iter)<span class="question-mark">?</span>; |
| <a href=#785 id=785 data-nosnippet>785</a> } |
| <a href=#786 id=786 data-nosnippet>786</a> } |
| <a href=#787 id=787 data-nosnippet>787</a> |
| <a href=#788 id=788 data-nosnippet>788</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#789 id=789 data-nosnippet>789</a>} |
| <a href=#790 id=790 data-nosnippet>790</a> |
| <a href=#791 id=791 data-nosnippet>791</a><span class="kw">impl</span><S: fmt::Debug + Copy> fmt::Debug <span class="kw">for </span>TopSubtree<S> { |
| <a href=#792 id=792 data-nosnippet>792</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <a href=#793 id=793 data-nosnippet>793</a> fmt::Debug::fmt(<span class="kw-2">&</span><span class="self">self</span>.view(), f) |
| <a href=#794 id=794 data-nosnippet>794</a> } |
| <a href=#795 id=795 data-nosnippet>795</a>} |
| <a href=#796 id=796 data-nosnippet>796</a> |
| <a href=#797 id=797 data-nosnippet>797</a><span class="kw">impl</span><S: fmt::Display + Copy> fmt::Display <span class="kw">for </span>TopSubtree<S> { |
| <a href=#798 id=798 data-nosnippet>798</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <a href=#799 id=799 data-nosnippet>799</a> fmt::Display::fmt(<span class="kw-2">&</span><span class="self">self</span>.view(), f) |
| <a href=#800 id=800 data-nosnippet>800</a> } |
| <a href=#801 id=801 data-nosnippet>801</a>} |
| <a href=#802 id=802 data-nosnippet>802</a> |
| <a href=#803 id=803 data-nosnippet>803</a><span class="kw">impl</span><S> fmt::Display <span class="kw">for </span>Leaf<S> { |
| <a href=#804 id=804 data-nosnippet>804</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <a href=#805 id=805 data-nosnippet>805</a> <span class="kw">match </span><span class="self">self </span>{ |
| <a href=#806 id=806 data-nosnippet>806</a> Leaf::Ident(it) => fmt::Display::fmt(it, f), |
| <a href=#807 id=807 data-nosnippet>807</a> Leaf::Literal(it) => fmt::Display::fmt(it, f), |
| <a href=#808 id=808 data-nosnippet>808</a> Leaf::Punct(it) => fmt::Display::fmt(it, f), |
| <a href=#809 id=809 data-nosnippet>809</a> } |
| <a href=#810 id=810 data-nosnippet>810</a> } |
| <a href=#811 id=811 data-nosnippet>811</a>} |
| <a href=#812 id=812 data-nosnippet>812</a> |
| <a href=#813 id=813 data-nosnippet>813</a><span class="kw">impl</span><S> fmt::Display <span class="kw">for </span>Ident<S> { |
| <a href=#814 id=814 data-nosnippet>814</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <a href=#815 id=815 data-nosnippet>815</a> fmt::Display::fmt(<span class="kw-2">&</span><span class="self">self</span>.is_raw.as_str(), f)<span class="question-mark">?</span>; |
| <a href=#816 id=816 data-nosnippet>816</a> fmt::Display::fmt(<span class="kw-2">&</span><span class="self">self</span>.sym, f) |
| <a href=#817 id=817 data-nosnippet>817</a> } |
| <a href=#818 id=818 data-nosnippet>818</a>} |
| <a href=#819 id=819 data-nosnippet>819</a> |
| <a href=#820 id=820 data-nosnippet>820</a><span class="kw">impl</span><S> Literal<S> { |
| <a href=#821 id=821 data-nosnippet>821</a> <span class="kw">pub fn </span>display_no_minus(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw">impl </span>fmt::Display { |
| <a href=#822 id=822 data-nosnippet>822</a> <span class="kw">struct </span>NoMinus<<span class="lifetime">'a</span>, S>(<span class="kw-2">&</span><span class="lifetime">'a </span>Literal<S>); |
| <a href=#823 id=823 data-nosnippet>823</a> <span class="kw">impl</span><S> fmt::Display <span class="kw">for </span>NoMinus<<span class="lifetime">'_</span>, S> { |
| <a href=#824 id=824 data-nosnippet>824</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <a href=#825 id=825 data-nosnippet>825</a> <span class="kw">let </span>symbol = |
| <a href=#826 id=826 data-nosnippet>826</a> <span class="self">self</span>.<span class="number">0</span>.symbol.as_str().strip_prefix(<span class="string">'-'</span>).unwrap_or(<span class="self">self</span>.<span class="number">0</span>.symbol.as_str()); |
| <a href=#827 id=827 data-nosnippet>827</a> <span class="kw">match </span><span class="self">self</span>.<span class="number">0</span>.kind { |
| <a href=#828 id=828 data-nosnippet>828</a> LitKind::Byte => <span class="macro">write!</span>(f, <span class="string">"b'{symbol}'"</span>), |
| <a href=#829 id=829 data-nosnippet>829</a> LitKind::Char => <span class="macro">write!</span>(f, <span class="string">"'{symbol}'"</span>), |
| <a href=#830 id=830 data-nosnippet>830</a> LitKind::Integer | LitKind::Float | LitKind::Err(<span class="kw">_</span>) => <span class="macro">write!</span>(f, <span class="string">"{symbol}"</span>), |
| <a href=#831 id=831 data-nosnippet>831</a> LitKind::Str => <span class="macro">write!</span>(f, <span class="string">"\"{symbol}\""</span>), |
| <a href=#832 id=832 data-nosnippet>832</a> LitKind::ByteStr => <span class="macro">write!</span>(f, <span class="string">"b\"{symbol}\""</span>), |
| <a href=#833 id=833 data-nosnippet>833</a> LitKind::CStr => <span class="macro">write!</span>(f, <span class="string">"c\"{symbol}\""</span>), |
| <a href=#834 id=834 data-nosnippet>834</a> LitKind::StrRaw(num_of_hashes) => { |
| <a href=#835 id=835 data-nosnippet>835</a> <span class="kw">let </span>num_of_hashes = num_of_hashes <span class="kw">as </span>usize; |
| <a href=#836 id=836 data-nosnippet>836</a> <span class="macro">write!</span>( |
| <a href=#837 id=837 data-nosnippet>837</a> f, |
| <a href=#838 id=838 data-nosnippet>838</a> <span class="string">r#"r{0:#<num_of_hashes$}"{text}"{0:#<num_of_hashes$}"#</span>, |
| <a href=#839 id=839 data-nosnippet>839</a> <span class="string">""</span>, |
| <a href=#840 id=840 data-nosnippet>840</a> text = symbol |
| <a href=#841 id=841 data-nosnippet>841</a> ) |
| <a href=#842 id=842 data-nosnippet>842</a> } |
| <a href=#843 id=843 data-nosnippet>843</a> LitKind::ByteStrRaw(num_of_hashes) => { |
| <a href=#844 id=844 data-nosnippet>844</a> <span class="kw">let </span>num_of_hashes = num_of_hashes <span class="kw">as </span>usize; |
| <a href=#845 id=845 data-nosnippet>845</a> <span class="macro">write!</span>( |
| <a href=#846 id=846 data-nosnippet>846</a> f, |
| <a href=#847 id=847 data-nosnippet>847</a> <span class="string">r#"br{0:#<num_of_hashes$}"{text}"{0:#<num_of_hashes$}"#</span>, |
| <a href=#848 id=848 data-nosnippet>848</a> <span class="string">""</span>, |
| <a href=#849 id=849 data-nosnippet>849</a> text = symbol |
| <a href=#850 id=850 data-nosnippet>850</a> ) |
| <a href=#851 id=851 data-nosnippet>851</a> } |
| <a href=#852 id=852 data-nosnippet>852</a> LitKind::CStrRaw(num_of_hashes) => { |
| <a href=#853 id=853 data-nosnippet>853</a> <span class="kw">let </span>num_of_hashes = num_of_hashes <span class="kw">as </span>usize; |
| <a href=#854 id=854 data-nosnippet>854</a> <span class="macro">write!</span>( |
| <a href=#855 id=855 data-nosnippet>855</a> f, |
| <a href=#856 id=856 data-nosnippet>856</a> <span class="string">r#"cr{0:#<num_of_hashes$}"{text}"{0:#<num_of_hashes$}"#</span>, |
| <a href=#857 id=857 data-nosnippet>857</a> <span class="string">""</span>, |
| <a href=#858 id=858 data-nosnippet>858</a> text = symbol |
| <a href=#859 id=859 data-nosnippet>859</a> ) |
| <a href=#860 id=860 data-nosnippet>860</a> } |
| <a href=#861 id=861 data-nosnippet>861</a> }<span class="question-mark">?</span>; |
| <a href=#862 id=862 data-nosnippet>862</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(suffix) = <span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>.suffix { |
| <a href=#863 id=863 data-nosnippet>863</a> <span class="macro">write!</span>(f, <span class="string">"{suffix}"</span>)<span class="question-mark">?</span>; |
| <a href=#864 id=864 data-nosnippet>864</a> } |
| <a href=#865 id=865 data-nosnippet>865</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#866 id=866 data-nosnippet>866</a> } |
| <a href=#867 id=867 data-nosnippet>867</a> } |
| <a href=#868 id=868 data-nosnippet>868</a> NoMinus(<span class="self">self</span>) |
| <a href=#869 id=869 data-nosnippet>869</a> } |
| <a href=#870 id=870 data-nosnippet>870</a>} |
| <a href=#871 id=871 data-nosnippet>871</a> |
| <a href=#872 id=872 data-nosnippet>872</a><span class="kw">impl</span><S> fmt::Display <span class="kw">for </span>Literal<S> { |
| <a href=#873 id=873 data-nosnippet>873</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <a href=#874 id=874 data-nosnippet>874</a> <span class="kw">match </span><span class="self">self</span>.kind { |
| <a href=#875 id=875 data-nosnippet>875</a> LitKind::Byte => <span class="macro">write!</span>(f, <span class="string">"b'{}'"</span>, <span class="self">self</span>.symbol), |
| <a href=#876 id=876 data-nosnippet>876</a> LitKind::Char => <span class="macro">write!</span>(f, <span class="string">"'{}'"</span>, <span class="self">self</span>.symbol), |
| <a href=#877 id=877 data-nosnippet>877</a> LitKind::Integer | LitKind::Float | LitKind::Err(<span class="kw">_</span>) => <span class="macro">write!</span>(f, <span class="string">"{}"</span>, <span class="self">self</span>.symbol), |
| <a href=#878 id=878 data-nosnippet>878</a> LitKind::Str => <span class="macro">write!</span>(f, <span class="string">"\"{}\""</span>, <span class="self">self</span>.symbol), |
| <a href=#879 id=879 data-nosnippet>879</a> LitKind::ByteStr => <span class="macro">write!</span>(f, <span class="string">"b\"{}\""</span>, <span class="self">self</span>.symbol), |
| <a href=#880 id=880 data-nosnippet>880</a> LitKind::CStr => <span class="macro">write!</span>(f, <span class="string">"c\"{}\""</span>, <span class="self">self</span>.symbol), |
| <a href=#881 id=881 data-nosnippet>881</a> LitKind::StrRaw(num_of_hashes) => { |
| <a href=#882 id=882 data-nosnippet>882</a> <span class="kw">let </span>num_of_hashes = num_of_hashes <span class="kw">as </span>usize; |
| <a href=#883 id=883 data-nosnippet>883</a> <span class="macro">write!</span>( |
| <a href=#884 id=884 data-nosnippet>884</a> f, |
| <a href=#885 id=885 data-nosnippet>885</a> <span class="string">r#"r{0:#<num_of_hashes$}"{text}"{0:#<num_of_hashes$}"#</span>, |
| <a href=#886 id=886 data-nosnippet>886</a> <span class="string">""</span>, |
| <a href=#887 id=887 data-nosnippet>887</a> text = <span class="self">self</span>.symbol |
| <a href=#888 id=888 data-nosnippet>888</a> ) |
| <a href=#889 id=889 data-nosnippet>889</a> } |
| <a href=#890 id=890 data-nosnippet>890</a> LitKind::ByteStrRaw(num_of_hashes) => { |
| <a href=#891 id=891 data-nosnippet>891</a> <span class="kw">let </span>num_of_hashes = num_of_hashes <span class="kw">as </span>usize; |
| <a href=#892 id=892 data-nosnippet>892</a> <span class="macro">write!</span>( |
| <a href=#893 id=893 data-nosnippet>893</a> f, |
| <a href=#894 id=894 data-nosnippet>894</a> <span class="string">r#"br{0:#<num_of_hashes$}"{text}"{0:#<num_of_hashes$}"#</span>, |
| <a href=#895 id=895 data-nosnippet>895</a> <span class="string">""</span>, |
| <a href=#896 id=896 data-nosnippet>896</a> text = <span class="self">self</span>.symbol |
| <a href=#897 id=897 data-nosnippet>897</a> ) |
| <a href=#898 id=898 data-nosnippet>898</a> } |
| <a href=#899 id=899 data-nosnippet>899</a> LitKind::CStrRaw(num_of_hashes) => { |
| <a href=#900 id=900 data-nosnippet>900</a> <span class="kw">let </span>num_of_hashes = num_of_hashes <span class="kw">as </span>usize; |
| <a href=#901 id=901 data-nosnippet>901</a> <span class="macro">write!</span>( |
| <a href=#902 id=902 data-nosnippet>902</a> f, |
| <a href=#903 id=903 data-nosnippet>903</a> <span class="string">r#"cr{0:#<num_of_hashes$}"{text}"{0:#<num_of_hashes$}"#</span>, |
| <a href=#904 id=904 data-nosnippet>904</a> <span class="string">""</span>, |
| <a href=#905 id=905 data-nosnippet>905</a> text = <span class="self">self</span>.symbol |
| <a href=#906 id=906 data-nosnippet>906</a> ) |
| <a href=#907 id=907 data-nosnippet>907</a> } |
| <a href=#908 id=908 data-nosnippet>908</a> }<span class="question-mark">?</span>; |
| <a href=#909 id=909 data-nosnippet>909</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(suffix) = <span class="kw-2">&</span><span class="self">self</span>.suffix { |
| <a href=#910 id=910 data-nosnippet>910</a> <span class="macro">write!</span>(f, <span class="string">"{suffix}"</span>)<span class="question-mark">?</span>; |
| <a href=#911 id=911 data-nosnippet>911</a> } |
| <a href=#912 id=912 data-nosnippet>912</a> <span class="prelude-val">Ok</span>(()) |
| <a href=#913 id=913 data-nosnippet>913</a> } |
| <a href=#914 id=914 data-nosnippet>914</a>} |
| <a href=#915 id=915 data-nosnippet>915</a> |
| <a href=#916 id=916 data-nosnippet>916</a><span class="kw">impl</span><S> fmt::Display <span class="kw">for </span>Punct<S> { |
| <a href=#917 id=917 data-nosnippet>917</a> <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <a href=#918 id=918 data-nosnippet>918</a> fmt::Display::fmt(<span class="kw-2">&</span><span class="self">self</span>.char, f) |
| <a href=#919 id=919 data-nosnippet>919</a> } |
| <a href=#920 id=920 data-nosnippet>920</a>} |
| <a href=#921 id=921 data-nosnippet>921</a> |
| <a href=#922 id=922 data-nosnippet>922</a><span class="kw">impl</span><S> Subtree<S> { |
| <a href=#923 id=923 data-nosnippet>923</a> <span class="doccomment">/// Count the number of tokens recursively |
| <a href=#924 id=924 data-nosnippet>924</a> </span><span class="kw">pub fn </span>count(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <a href=#925 id=925 data-nosnippet>925</a> <span class="self">self</span>.usize_len() |
| <a href=#926 id=926 data-nosnippet>926</a> } |
| <a href=#927 id=927 data-nosnippet>927</a>} |
| <a href=#928 id=928 data-nosnippet>928</a> |
| <a href=#929 id=929 data-nosnippet>929</a><span class="kw">impl</span><S> TopSubtree<S> { |
| <a href=#930 id=930 data-nosnippet>930</a> <span class="doccomment">/// A simple line string used for debugging |
| <a href=#931 id=931 data-nosnippet>931</a> </span><span class="kw">pub fn </span>subtree_as_debug_string(<span class="kw-2">&</span><span class="self">self</span>, subtree_idx: usize) -> String { |
| <a href=#932 id=932 data-nosnippet>932</a> <span class="kw">fn </span>debug_subtree<S>( |
| <a href=#933 id=933 data-nosnippet>933</a> output: <span class="kw-2">&mut </span>String, |
| <a href=#934 id=934 data-nosnippet>934</a> subtree: <span class="kw-2">&</span>Subtree<S>, |
| <a href=#935 id=935 data-nosnippet>935</a> iter: <span class="kw-2">&mut </span>std::slice::Iter<<span class="lifetime">'_</span>, TokenTree<S>>, |
| <a href=#936 id=936 data-nosnippet>936</a> ) { |
| <a href=#937 id=937 data-nosnippet>937</a> <span class="kw">let </span>delim = <span class="kw">match </span>subtree.delimiter.kind { |
| <a href=#938 id=938 data-nosnippet>938</a> DelimiterKind::Brace => (<span class="string">"{"</span>, <span class="string">"}"</span>), |
| <a href=#939 id=939 data-nosnippet>939</a> DelimiterKind::Bracket => (<span class="string">"["</span>, <span class="string">"]"</span>), |
| <a href=#940 id=940 data-nosnippet>940</a> DelimiterKind::Parenthesis => (<span class="string">"("</span>, <span class="string">")"</span>), |
| <a href=#941 id=941 data-nosnippet>941</a> DelimiterKind::Invisible => (<span class="string">"$"</span>, <span class="string">"$"</span>), |
| <a href=#942 id=942 data-nosnippet>942</a> }; |
| <a href=#943 id=943 data-nosnippet>943</a> |
| <a href=#944 id=944 data-nosnippet>944</a> output.push_str(delim.<span class="number">0</span>); |
| <a href=#945 id=945 data-nosnippet>945</a> <span class="kw">let </span><span class="kw-2">mut </span>last = <span class="prelude-val">None</span>; |
| <a href=#946 id=946 data-nosnippet>946</a> <span class="kw">let </span><span class="kw-2">mut </span>idx = <span class="number">0</span>; |
| <a href=#947 id=947 data-nosnippet>947</a> <span class="kw">while </span>idx < subtree.len { |
| <a href=#948 id=948 data-nosnippet>948</a> <span class="kw">let </span>child = iter.next().unwrap(); |
| <a href=#949 id=949 data-nosnippet>949</a> debug_token_tree(output, child, last, iter); |
| <a href=#950 id=950 data-nosnippet>950</a> last = <span class="prelude-val">Some</span>(child); |
| <a href=#951 id=951 data-nosnippet>951</a> idx += <span class="number">1</span>; |
| <a href=#952 id=952 data-nosnippet>952</a> } |
| <a href=#953 id=953 data-nosnippet>953</a> |
| <a href=#954 id=954 data-nosnippet>954</a> output.push_str(delim.<span class="number">1</span>); |
| <a href=#955 id=955 data-nosnippet>955</a> } |
| <a href=#956 id=956 data-nosnippet>956</a> |
| <a href=#957 id=957 data-nosnippet>957</a> <span class="kw">fn </span>debug_token_tree<S>( |
| <a href=#958 id=958 data-nosnippet>958</a> output: <span class="kw-2">&mut </span>String, |
| <a href=#959 id=959 data-nosnippet>959</a> tt: <span class="kw-2">&</span>TokenTree<S>, |
| <a href=#960 id=960 data-nosnippet>960</a> last: <span class="prelude-ty">Option</span><<span class="kw-2">&</span>TokenTree<S>>, |
| <a href=#961 id=961 data-nosnippet>961</a> iter: <span class="kw-2">&mut </span>std::slice::Iter<<span class="lifetime">'_</span>, TokenTree<S>>, |
| <a href=#962 id=962 data-nosnippet>962</a> ) { |
| <a href=#963 id=963 data-nosnippet>963</a> <span class="kw">match </span>tt { |
| <a href=#964 id=964 data-nosnippet>964</a> TokenTree::Leaf(it) => { |
| <a href=#965 id=965 data-nosnippet>965</a> <span class="kw">let </span>s = <span class="kw">match </span>it { |
| <a href=#966 id=966 data-nosnippet>966</a> Leaf::Literal(it) => it.symbol.to_string(), |
| <a href=#967 id=967 data-nosnippet>967</a> Leaf::Punct(it) => it.char.to_string(), |
| <a href=#968 id=968 data-nosnippet>968</a> Leaf::Ident(it) => <span class="macro">format!</span>(<span class="string">"{}{}"</span>, it.is_raw.as_str(), it.sym), |
| <a href=#969 id=969 data-nosnippet>969</a> }; |
| <a href=#970 id=970 data-nosnippet>970</a> <span class="kw">match </span>(it, last) { |
| <a href=#971 id=971 data-nosnippet>971</a> (Leaf::Ident(<span class="kw">_</span>), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>TokenTree::Leaf(Leaf::Ident(<span class="kw">_</span>)))) => { |
| <a href=#972 id=972 data-nosnippet>972</a> output.push(<span class="string">' '</span>); |
| <a href=#973 id=973 data-nosnippet>973</a> output.push_str(<span class="kw-2">&</span>s); |
| <a href=#974 id=974 data-nosnippet>974</a> } |
| <a href=#975 id=975 data-nosnippet>975</a> (Leaf::Punct(<span class="kw">_</span>), <span class="prelude-val">Some</span>(TokenTree::Leaf(Leaf::Punct(punct)))) => { |
| <a href=#976 id=976 data-nosnippet>976</a> <span class="kw">if </span>punct.spacing == Spacing::Alone { |
| <a href=#977 id=977 data-nosnippet>977</a> output.push(<span class="string">' '</span>); |
| <a href=#978 id=978 data-nosnippet>978</a> output.push_str(<span class="kw-2">&</span>s); |
| <a href=#979 id=979 data-nosnippet>979</a> } <span class="kw">else </span>{ |
| <a href=#980 id=980 data-nosnippet>980</a> output.push_str(<span class="kw-2">&</span>s); |
| <a href=#981 id=981 data-nosnippet>981</a> } |
| <a href=#982 id=982 data-nosnippet>982</a> } |
| <a href=#983 id=983 data-nosnippet>983</a> <span class="kw">_ </span>=> output.push_str(<span class="kw-2">&</span>s), |
| <a href=#984 id=984 data-nosnippet>984</a> } |
| <a href=#985 id=985 data-nosnippet>985</a> } |
| <a href=#986 id=986 data-nosnippet>986</a> TokenTree::Subtree(it) => debug_subtree(output, it, iter), |
| <a href=#987 id=987 data-nosnippet>987</a> } |
| <a href=#988 id=988 data-nosnippet>988</a> } |
| <a href=#989 id=989 data-nosnippet>989</a> |
| <a href=#990 id=990 data-nosnippet>990</a> <span class="kw">let </span><span class="kw-2">mut </span>res = String::new(); |
| <a href=#991 id=991 data-nosnippet>991</a> debug_token_tree( |
| <a href=#992 id=992 data-nosnippet>992</a> <span class="kw-2">&mut </span>res, |
| <a href=#993 id=993 data-nosnippet>993</a> <span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>[subtree_idx], |
| <a href=#994 id=994 data-nosnippet>994</a> <span class="prelude-val">None</span>, |
| <a href=#995 id=995 data-nosnippet>995</a> <span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0</span>[subtree_idx + <span class="number">1</span>..].iter(), |
| <a href=#996 id=996 data-nosnippet>996</a> ); |
| <a href=#997 id=997 data-nosnippet>997</a> res |
| <a href=#998 id=998 data-nosnippet>998</a> } |
| <a href=#999 id=999 data-nosnippet>999</a>} |
| <a href=#1000 id=1000 data-nosnippet>1000</a> |
| <a href=#1001 id=1001 data-nosnippet>1001</a><span class="kw">pub fn </span>pretty<S>(<span class="kw-2">mut </span>tkns: <span class="kw-2">&</span>[TokenTree<S>]) -> String { |
| <a href=#1002 id=1002 data-nosnippet>1002</a> <span class="kw">fn </span>tokentree_to_text<S>(tkn: <span class="kw-2">&</span>TokenTree<S>, tkns: <span class="kw-2">&mut &</span>[TokenTree<S>]) -> String { |
| <a href=#1003 id=1003 data-nosnippet>1003</a> <span class="kw">match </span>tkn { |
| <a href=#1004 id=1004 data-nosnippet>1004</a> TokenTree::Leaf(Leaf::Ident(ident)) => { |
| <a href=#1005 id=1005 data-nosnippet>1005</a> <span class="macro">format!</span>(<span class="string">"{}{}"</span>, ident.is_raw.as_str(), ident.sym) |
| <a href=#1006 id=1006 data-nosnippet>1006</a> } |
| <a href=#1007 id=1007 data-nosnippet>1007</a> TokenTree::Leaf(Leaf::Literal(literal)) => <span class="macro">format!</span>(<span class="string">"{literal}"</span>), |
| <a href=#1008 id=1008 data-nosnippet>1008</a> TokenTree::Leaf(Leaf::Punct(punct)) => <span class="macro">format!</span>(<span class="string">"{}"</span>, punct.char), |
| <a href=#1009 id=1009 data-nosnippet>1009</a> TokenTree::Subtree(subtree) => { |
| <a href=#1010 id=1010 data-nosnippet>1010</a> <span class="kw">let </span>(subtree_content, rest) = tkns.split_at(subtree.usize_len()); |
| <a href=#1011 id=1011 data-nosnippet>1011</a> <span class="kw">let </span>content = pretty(subtree_content); |
| <a href=#1012 id=1012 data-nosnippet>1012</a> <span class="kw-2">*</span>tkns = rest; |
| <a href=#1013 id=1013 data-nosnippet>1013</a> <span class="kw">let </span>(open, close) = <span class="kw">match </span>subtree.delimiter.kind { |
| <a href=#1014 id=1014 data-nosnippet>1014</a> DelimiterKind::Brace => (<span class="string">"{"</span>, <span class="string">"}"</span>), |
| <a href=#1015 id=1015 data-nosnippet>1015</a> DelimiterKind::Bracket => (<span class="string">"["</span>, <span class="string">"]"</span>), |
| <a href=#1016 id=1016 data-nosnippet>1016</a> DelimiterKind::Parenthesis => (<span class="string">"("</span>, <span class="string">")"</span>), |
| <a href=#1017 id=1017 data-nosnippet>1017</a> DelimiterKind::Invisible => (<span class="string">""</span>, <span class="string">""</span>), |
| <a href=#1018 id=1018 data-nosnippet>1018</a> }; |
| <a href=#1019 id=1019 data-nosnippet>1019</a> <span class="macro">format!</span>(<span class="string">"{open}{content}{close}"</span>) |
| <a href=#1020 id=1020 data-nosnippet>1020</a> } |
| <a href=#1021 id=1021 data-nosnippet>1021</a> } |
| <a href=#1022 id=1022 data-nosnippet>1022</a> } |
| <a href=#1023 id=1023 data-nosnippet>1023</a> |
| <a href=#1024 id=1024 data-nosnippet>1024</a> <span class="kw">let </span><span class="kw-2">mut </span>last = String::new(); |
| <a href=#1025 id=1025 data-nosnippet>1025</a> <span class="kw">let </span><span class="kw-2">mut </span>last_to_joint = <span class="bool-val">true</span>; |
| <a href=#1026 id=1026 data-nosnippet>1026</a> |
| <a href=#1027 id=1027 data-nosnippet>1027</a> <span class="kw">while let </span><span class="prelude-val">Some</span>((tkn, rest)) = tkns.split_first() { |
| <a href=#1028 id=1028 data-nosnippet>1028</a> tkns = rest; |
| <a href=#1029 id=1029 data-nosnippet>1029</a> last = [last, tokentree_to_text(tkn, <span class="kw-2">&mut </span>tkns)].join(<span class="kw">if </span>last_to_joint { <span class="string">"" </span>} <span class="kw">else </span>{ <span class="string">" " </span>}); |
| <a href=#1030 id=1030 data-nosnippet>1030</a> last_to_joint = <span class="bool-val">false</span>; |
| <a href=#1031 id=1031 data-nosnippet>1031</a> <span class="kw">if let </span>TokenTree::Leaf(Leaf::Punct(punct)) = tkn |
| <a href=#1032 id=1032 data-nosnippet>1032</a> && punct.spacing == Spacing::Joint |
| <a href=#1033 id=1033 data-nosnippet>1033</a> { |
| <a href=#1034 id=1034 data-nosnippet>1034</a> last_to_joint = <span class="bool-val">true</span>; |
| <a href=#1035 id=1035 data-nosnippet>1035</a> } |
| <a href=#1036 id=1036 data-nosnippet>1036</a> } |
| <a href=#1037 id=1037 data-nosnippet>1037</a> last |
| <a href=#1038 id=1038 data-nosnippet>1038</a>}</code></pre></div></section></main></body></html> |
